CN117145301A

CN117145301A - Door assembly and refrigerator

Info

Publication number: CN117145301A
Application number: CN202210563035.0A
Authority: CN
Inventors: 崔守良; 孙源; 任志洁
Original assignee: Hefei Hualing Co Ltd; Hefei Midea Refrigerator Co Ltd; Midea Group Shanghai Co Ltd
Current assignee: Hefei Hualing Co Ltd; Hefei Midea Refrigerator Co Ltd; Midea Group Shanghai Co Ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2023-12-01

Abstract

The invention discloses a door assembly and a refrigerator with the door assembly, wherein the door assembly comprises a shell, a fixed bracket, a panel, a deflector rod and an elastic piece, the shell is provided with a handle groove, and the handle groove is provided with an opening; the deflector rod is connected with the fixed bracket and the panel; one end of the elastic piece is connected with the deflector rod, and the other end of the elastic piece is connected with the fixed bracket or the shell; in the first state, the outer surface of the panel is flush with the outer surface of the shell or smoothly transits, and the elastic piece enables the deflector rod to have a tendency to rotate around a first rotation direction; in the second state, part of the panel protrudes out of the opening or the panel is contracted in the shell, the elastic piece pushes the deflector rod to rotate around the second rotating direction, and the first rotating direction is opposite to the second rotating direction; the elastic piece has a critical state in the process of switching between the first state and the second state, and the acting force direction of the elastic piece on the deflector rod faces the rotation center of the deflector rod in the critical state. Different action speeds and opening and closing effects of the door assembly are realized by utilizing energy conversion of the elastic piece.

Description

Door assembly and refrigerator

Technical Field

The invention relates to the technical field of household appliances, in particular to a door assembly and a refrigerator.

Background

In order to facilitate the opening of the refrigerator, the door body is generally provided with a handle, the handle is generally a visible handle arranged on the door body, and most of the handles are fixed and non-movable structures. The matching structure of the handle and the door body is poor, the attractive appearance effect of the whole refrigerator is easily affected, the handle is arranged on the surface of the door body, a part of space is occupied, sundries such as dust easily fall on the handle, and the handle is easy to dirty and needs to be cleaned frequently. In order to solve the above problems, a hidden handle is used in the related art. Specifically, a groove is formed in the door body, the handle panel is arranged in the groove and is connected with the bottom wall of the groove through a spring, and the handle panel is pressed at the opening of the groove. However, in the process of pushing the handle panel open, the elastic force of the spring needs to be overcome, so that the resistance is large, the use is inconvenient, and the user experience is poor.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the door assembly provided by the invention can provide power assistance when being pushed by hand, and the user experience is improved.

The invention also provides a refrigerator with the door assembly.

According to a first aspect of the invention, a door assembly comprises a shell, a fixed bracket, a panel, a deflector rod and an elastic piece, wherein the shell is provided with a handle groove, and the handle groove is provided with an opening; the fixed support is connected to the inner side of the handle groove; the panel is positioned at the opening; one end of the deflector rod is rotationally connected to the fixed support, and the other end of the deflector rod is used for driving the panel to move in a telescopic way along the axial direction of the opening; one end of the elastic piece is connected with the deflector rod, and the other end of the elastic piece is connected with the fixed bracket or the shell; wherein the door assembly has a first state in which the outer surface of the panel is flush with or smoothly transitions the outer surface of the housing, and a second state in which the resilient member acts on the lever such that the lever has a tendency to rotate about a first rotational direction; in the second state, part of the panel protrudes out of the opening, or the panel is contracted in the shell, the elastic piece pushes the deflector rod to rotate around a second rotation direction, and the first rotation direction is opposite to the second rotation direction; the elastic piece has a critical state in the process of switching the first state and the second state, and the acting force direction of the elastic piece on the deflector rod faces to the rotation center of the deflector rod in the critical state.

The door assembly provided by the embodiment of the invention has at least the following beneficial effects: in the first state, the elastic force of the elastic piece acts on the deflector rod to enable the deflector rod to have a tendency of rotating around the first rotating direction, and the outer surface of the panel is flush with the outer surface of the shell or in smooth transition, so that the effect of hiding the door assembly is achieved. In the second state, the elastic force of the elastic piece acts on the deflector rod to enable the deflector rod to have a tendency of rotating around the second rotating direction, the handle is exposed, and the door is convenient to open. The energy conversion of the elastic piece is utilized to realize different action speeds and opening and closing effects of the door assembly.

According to some embodiments of the invention, the fixed bracket is provided with a first mounting part, the deflector rod is provided with a second mounting part, one end of the elastic piece is connected with the first mounting part, the other end of the elastic piece is connected with the second mounting part, and in the critical state, the rotation centers of the first mounting part, the second mounting part and the deflector rod are positioned on the same straight line.

According to some embodiments of the invention, the elastic member is a compression spring or a torsion spring, a connecting line of two ends of the driving lever forms a center line, and the second mounting portion is located at one side of the center line, which is close to the first mounting portion.

According to some embodiments of the invention, the elastic member is an extension spring, a rubber band or an elastic rope, a connecting line of two ends of the deflector rod forms a central line, and the second mounting portion is located at one side of the central line away from the first mounting portion.

According to some embodiments of the invention, the door assembly further comprises a guide assembly for guiding the panel for telescopic movement along the axial direction of the opening.

According to some embodiments of the invention, the guide assembly comprises a sliding shaft and a sliding block, the sliding block is slidably connected to the sliding shaft, two ends of the sliding shaft are fixedly connected to the fixed support, the panel is connected to the sliding block, and the deflector rod is rotatably connected to the panel.

According to some embodiments of the invention, the door assembly further comprises a driving device, and the driving device drives the deflector rod to rotate.

According to some embodiments of the invention, the shift lever is connected to the fixed bracket through a rotation shaft, the driving device comprises a motor, and an output shaft of the motor is connected to the rotation shaft through a rotation shaft connecting sleeve.

According to some embodiments of the invention, the shift lever is connected to the fixed bracket through a rotation shaft, the driving device comprises a motor, an output shaft of the motor is connected with a driving gear, the rotation shaft is connected with a driven gear, and the driving gear is meshed with the driven gear.

According to some embodiments of the invention, the number of the shift levers is two, and the two shift levers are connected to the fixed bracket through a rotation shaft and connected to two ends of the panel.

According to some embodiments of the present invention, the panel includes a grip portion, two first connection portions, and two second connection portions, the grip portion being arranged in an axial direction parallel to the rotation shaft, the two first connection portions being connected to both ends of the grip portion and arranged in a direction away from a rear surface of the grip portion, respectively, and both ends of the second connection portions being connected to the first connection portions and the lever, respectively, and arranged in an axial direction parallel to the rotation shaft; in the first state, the outer surface of the grip portion is flush with or smoothly transitions with the outer surface of the housing; in the second state, the holding part and at least part of the first connecting part protrude from the opening.

According to some embodiments of the invention, the panel includes a shutter portion arranged in an axial direction parallel to the rotation shaft, and two third connection portions connected to one side of the shutter portion at intervals and arranged in a direction away from a rear surface of the shutter portion, the lever being connected to the third connection portions; in the first state, the outer surface of the baffle part is flush with or smoothly transits with the outer surface of the shell; in the second state, the flap portion is retracted within the housing.

A refrigerator according to an embodiment of the second aspect of the present invention includes a door assembly according to an embodiment of the first aspect of the present invention.

The refrigerator provided by the embodiment of the invention has at least the following beneficial effects: by adopting the door assembly of the embodiment of the first aspect of the invention, different action speeds and opening and closing effects of the door assembly can be realized by utilizing energy conversion of the elastic piece.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic view of an embodiment of a refrigerator according to an embodiment of the present invention;

fig. 2 is a schematic view of another embodiment of a refrigerator according to an embodiment of the present invention;

fig. 3 is a schematic view of another embodiment of a refrigerator according to an embodiment of the present invention;

FIG. 4 is a front view (with the door body omitted) of one embodiment of the door assembly shown in FIG. 1;

FIG. 5 is a perspective view of the door assembly shown in FIG. 4;

FIG. 6 is a schematic view of the door assembly shown in FIG. 4 in an initial state;

FIG. 7 is a schematic view of the door assembly shown in FIG. 4 in an intermediate state;

FIG. 8 is a schematic view of the door assembly shown in FIG. 4 in a completed state;

FIG. 9 is a schematic view of another embodiment of the door assembly shown in FIG. 1 (with the door body omitted);

FIG. 10 is a schematic view of another embodiment of the door assembly shown in FIG. 1 (with the door body omitted);

FIG. 11 is a schematic illustration of the connection of one embodiment of the faceplate and lever shown in FIG. 5;

FIG. 12 is a schematic view of the connection of the faceplate and another embodiment of the lever shown in FIG. 5;

FIG. 13 is a schematic view of another embodiment of the door assembly shown in FIG. 1 (with the door body omitted);

FIG. 14 is an exploded view of the door assembly shown in FIG. 13;

FIG. 15 is a schematic view of another state of the door assembly shown in FIG. 13;

FIG. 16 is a schematic view of the door assembly shown in FIG. 13 in an initial state;

FIG. 17 is a schematic view of the door assembly shown in FIG. 13 in an intermediate state;

FIG. 18 is a cross-sectional view of the door assembly shown in FIG. 16;

FIG. 19 is a cross-sectional view of the door assembly shown in FIG. 17;

FIG. 20 is a schematic view of another embodiment of the door assembly shown in FIG. 1 (with the door body omitted);

FIG. 21 is a schematic view of an addition detection assembly of the door assembly shown in FIG. 17;

FIG. 22 is a schematic view of another embodiment of the door assembly shown in FIG. 1 (with the door body omitted);

FIG. 23 is a schematic view of the door assembly shown in FIG. 22 in an initial state;

FIG. 24 is a schematic view of the compression spring of FIG. 22 in a critical state;

FIG. 25 is a schematic view of the door assembly shown in FIG. 22 in an intermediate state;

FIG. 26 is a schematic view of the door assembly shown in FIG. 22 in a completed state;

FIG. 27 is a schematic view of another embodiment of the door assembly shown in FIG. 22;

FIG. 28 is a schematic view of another embodiment door assembly in an initial state;

FIG. 29 is a schematic view of the door assembly of FIG. 28 in a critical state;

FIG. 30 is a schematic view of the door assembly shown in FIG. 28 in a completed state;

FIG. 31 is a schematic view of another embodiment door assembly in an initial state;

FIG. 32 is a schematic view of the door assembly of FIG. 31 in a critical state;

FIG. 33 is a schematic view of the door assembly shown in FIG. 31 in an intermediate state;

FIG. 34 is a schematic view of the door assembly shown in FIG. 31 in a completed state;

FIG. 35 is a schematic view of another embodiment of the door assembly shown in FIG. 1 (with the door body omitted);

FIG. 36 is a schematic view of the clutch mechanism shown in FIG. 35;

FIG. 37 is a schematic view of the door assembly shown in FIG. 35 in an initial state;

FIG. 38 is a schematic view of the door assembly shown in FIG. 35 in an intermediate state;

FIG. 39 is a schematic view of the door assembly shown in FIG. 35 in a completed state in a hand-push scenario;

FIG. 40 is a schematic view of the door assembly shown in FIG. 35 in a finished state in an electrically controlled scenario;

FIG. 41 is a schematic view of the door assembly of the alternative embodiment shown in FIG. 1 in an initial state;

FIG. 42 is a schematic view of the door assembly shown in FIG. 41 in a completed state;

FIG. 43 is a schematic view of another embodiment of the door assembly shown in FIG. 1 (with the door body omitted);

FIG. 44 is a schematic view of the door assembly shown in FIG. 43 at another angle;

FIG. 45 is a schematic illustration of the door assembly shown in FIG. 43 with the stationary bracket omitted;

fig. 46 is a partial cross-sectional view of one embodiment of the shutter shown in fig. 44;

FIG. 47 is a schematic view of the door assembly (with door body) shown in FIG. 43 in an initial state;

FIG. 48 is a schematic view of the cross-sectional view A-A shown in FIG. 46 in the state of FIG. 47;

FIG. 49 is a schematic view of the B-B cross-sectional view shown in FIG. 46 in the state of FIG. 47;

FIG. 50 is a schematic view of the door assembly (with door body) shown in FIG. 43 in an intermediate state;

FIG. 51 is a schematic view of the cross-sectional view A-A shown in FIG. 46 in the state of FIG. 50;

FIG. 52 is a schematic view of the B-B cross-sectional view shown in FIG. 46 in the state of FIG. 50;

FIG. 53 is a schematic view of the door assembly (with door body) shown in FIG. 43 in a completed state;

FIG. 54 is a schematic view of the cross-sectional view A-A shown in FIG. 46 in the state of FIG. 53;

FIG. 55 is a schematic view of the B-B cross-sectional view shown in FIG. 46 in the state of FIG. 53;

Fig. 56 is a schematic view of another embodiment of the shutter shown at 43;

fig. 57 is a schematic view of another embodiment of the shutter shown at 43;

FIG. 58 is a flow chart of one embodiment of a method of controlling a door assembly according to an embodiment of the present invention;

FIG. 59 is a flow chart of another embodiment of a method of controlling a door assembly according to an embodiment of the present invention;

FIG. 60 is a flow chart of another embodiment of a method of controlling a door assembly according to an embodiment of the present invention;

FIG. 61 is a flow chart of another embodiment of a method of controlling a door assembly according to an embodiment of the present invention;

FIG. 62 is a flow chart of another embodiment of a method of controlling a door assembly according to an embodiment of the present invention;

FIG. 63 is a flow chart of another embodiment of a method of controlling a door assembly according to an embodiment of the present invention;

FIG. 64 is a flow chart of another embodiment of a method of controlling a door assembly according to an embodiment of the present invention.

Reference numerals:

101. a door body; 102. a panel;

301. a drawer;

401. a fixed bracket; 402. a deflector rod;

501. a sliding shaft; 502. a baffle plate portion; 503. a third connecting portion;

601. a limiting block;

901. a motor; 902. a drive gear; 903. a rotating shaft; 904. a driven gear;

1001. a rotating shaft connecting sleeve;

1101. A guide boss; 1102. a guide waist-shaped hole;

1301. a tilting rod; 1302. a guide waist type groove;

1401. a slide block; 1402. a pin shaft; 1403. a return spring;

2001. a magnet; 2002. a hall sensor;

2101. a first compression spring; 2102. a first mounting portion; 2103. a second mounting portion;

2201. an indication line; 2202. a center line; 2203. a rotation center;

2601. a first extension spring;

3001. a first torsion spring;

3401. a clutch mechanism;

3501. a convex portion; 3502. a concave portion; 3503. a rotational gap;

4001. a handle groove; 4002. an opening; 4003. a clasp groove portion; 4004. a movable groove portion; 4005. a light source;

4201. a grip portion; 4202. a first connection portion;

4301. a rear cover; 4302. a shutter;

4401. a second connecting portion;

4501. a push rod; 4502. a housing; 4503. a sliding sheet; 4504. a second compression spring; 4505. a guide chute;

4701. a rotating part; 4702. a limit groove; 4703. a limit part;

4801. a sliding part; 4802. a first stop position; 4803. a second stop position;

5401. a guide slope;

5501. a second tension spring;

5601. and a second torsion spring.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1, it may be understood that the refrigerator according to the embodiment of the present invention may be a single door refrigerator, including a door body 101, where the door body 101 includes a housing (not shown in the drawing) and a liner (not shown in the drawing), a handle groove 4001 (refer to fig. 41) is provided on an outer side of the housing, that is, a handle groove 4001 is provided on a side of the housing facing a user, the handle groove 4001 has an opening 4002, a panel 102 is provided at the opening 4002, and the panel 102 can move relative to the opening 4002, so that the opening 4002 can be hidden or the opening 4002 can be opened. The door body 101 and the panel 102 become a part of the door assembly, and the cooperation of the panel 102 and the handle groove 4001 forms a handle structure, and enables switching of the handle structure between a use state and a hidden state.

Referring to fig. 2, it can be understood that the refrigerator according to the embodiment of the present invention may also be a double door refrigerator, including two door bodies 101, the outer shell of each door body 101 is provided with a handle slot 4001, and the opening 4002 of the handle slot 4001 is provided with a panel 102, so that a handle structure is formed on each door, and the handle structure can be switched between a use state and a hidden state.

It should be noted that, in the two-door refrigerator, only one door may adopt the door assembly structure according to the embodiment of the present invention, and the other door adopts other types of handle structures, which is not limited herein.

Referring to fig. 3, it can be understood that the refrigerator according to the embodiment of the present invention may also be a multi-door refrigerator, that is, the refrigerator has a door body 101 and a drawer 301, the door body 101 or the drawer 301 can be opened to realize a door opening function, the shells of the door body 101 and the drawer 301 are both provided with a handle slot 4001, and the openings 4002 of the handle slot 4001 are both provided with a panel 102, so that a handle structure is formed between the door body 101 and the drawer 301, and the handle structure can be switched between a use state and a hidden state.

It should be noted that, the door assembly structure of the embodiment of the present invention may be used only in the drawer 301, and the door body 101 may be used in other types of handle structures, which is not limited herein.

Referring to fig. 4 and 5, it can be appreciated that the door assembly according to the embodiment of the present invention further includes a fixing bracket 401 and a lever 402, the fixing bracket 401 is connected to the inner side of the pull groove 4001, and the panel 102 is connected to the fixing bracket 401 through the lever 402. Specifically, one end of the lever 402 is rotatably connected with the fixed support 401, and the panel 102 is connected with the other end of the lever 402, so that the panel 102 can swing around the hinge point of the lever 402 and the fixed support 401, and further the panel 102 can move telescopically along the axial direction of the opening 4002. In other words, the panel 102 has two states, defined as a first state and a second state, respectively. In the first state, the outer surface of the panel 102 is flush with or smoothly transits with the outer surface of the housing, at this time, the panel 102 is in a hidden state, and the outer surface of the panel 102 and the outer surface of the housing tend to be integral in appearance, and no obvious protrusion or recess exists, so that the refrigerator is neat and beautiful in appearance. In the second state, the panel 102 may be retracted within the handle slot 4001 to reveal the handle slot 4001, and a user may extend his or her hand into the handle slot 4001 to pull the door 101 or drawer 301 to open the refrigerator. In the second state, the panel 102 may also protrude beyond the handle groove 4001 such that the panel 102 protruding at the opening 4002 can be held by a user, thereby pulling the door 101 or the drawer 301 to open the refrigerator. The panel is driven by the deflector rod 402, so that the space in the length direction of the refrigerator door can be utilized, the space in the thickness direction is reduced, and the space utilization rate is improved.

It is understood that the axial direction of the opening 4002 refers to a direction perpendicular to the plane of the housing in which the opening 4002 is located, including a direction approximately perpendicular to the plane of the housing in which the opening 4002 is located, and can also be understood as the front-to-back direction as shown in fig. 6. In other words, the axial movement of the panel 102 along the opening 4002 is an integral translational movement, rather than a tilting movement.

It should be noted that, in one embodiment, in the first state, the panel 102 is at the lowest point of natural swinging, that is, the panel 102 is located directly below the hinge point of the lever 402 and the fixing bracket 401, and the lever 402 is in a naturally hanging state. Correspondingly, in the second state, the panel 102 swings upward. In this manner, the panel 102 can be automatically restored to the hidden state after being moved by the user. In another embodiment, in the second state, the panel 102 is at the lowest point of natural swing, and correspondingly, in the first state, the panel 102 swings upward, and a retaining structure may be disposed at the edge of the opening 4002 at this time, so that the panel 102 can be kept in a hidden state, such as a magnetic structure, to attract the panel 102 to the opening 4002; for example, when the hinge point of the lever 402 and the fixed support 401 is provided with a damping structure so that the panel 102 rotates to the opening 4002, the panel is not easy to naturally separate from the opening 4002 due to the damping force.

Referring to fig. 5 and 6, it can be understood that the door assembly according to the embodiment of the present invention further includes a sliding shaft 501, two ends of the sliding shaft 501 are fixedly connected to the fixing bracket 401, the panel 102 is slidably connected to the sliding shaft 501, and the lever 402 is rotatably connected to the panel 102. By arranging the sliding shaft 501, the panel 102 moves along a predetermined track, the movement is smoother, the switching between the first state and the second state is smoother, and the panel 102 can conveniently stay at any position on the sliding shaft 501.

It should be noted that, the sliding shaft 501 may also be replaced by a guide assembly such as a sliding rail, a sliding groove, etc., which is connected to the panel 102 to guide the panel 102 to move telescopically along the axial direction of the opening 4002.

Referring to fig. 5 and 6, it can be understood that the number of the levers 402 is two, and the two levers 402 are connected to the fixing support 401 through the rotation shaft 903 and connected to two ends of the panel 102, so that the stress of the panel 102 is more balanced, and the panel 102 is not easy to tilt in the process of swinging back and forth. In addition, the panel 102 includes a shutter portion 502 and two third connection portions 503, the shutter portion 502 is arranged in an axial direction parallel to the rotation axis 903, the shutter portion 502 is used to close the opening 4002, the two third connection portions 503 are connected to one side of the shutter portion 502 at intervals and arranged in an axial direction perpendicular to the rotation axis 903, and one lever 402 is correspondingly connected to one third connection portion 503, that is, the lever 402 is connected to the shutter portion 502 through the third connection portion 503. Thus, in the first state, the lever 402 drives the shutter portion 502 to move to the opening 4002 through the third connection portion 503, so that the outer surface of the shutter portion 502 is flush with or smoothly transits with the outer surface of the housing; in the second state, the shift lever 402 drives the baffle portion 502 to move into the handle groove 4001 through the third connecting portion 503, so that the baffle portion 502 is retracted into the housing.

The third connection portion 503 may be inclined at an angle to the axis of the rotation shaft 903, that is, may be arranged in a direction away from the back surface of the baffle portion 502, that is, in a rearward direction.

It will be appreciated that the third connecting portion 503 is offset from the baffle portion 502 in the front-to-rear direction, and not in the same plane, so that the third connecting portion 503 may be located in the pull tab slot 4001, reducing the possibility of interference between the faceplate 102 and the mounting bracket 401 during movement.

Referring to fig. 6 to 8, it can be appreciated that during the transition of the panel 102 from the hidden state to the in-use state, the panel 102 undergoes three state change processes, namely an initial state, an intermediate state, and a completed state. Two limiting blocks 601 are arranged on the fixed support 401 and are respectively positioned at two ends of the sliding shaft 501, and the limiting blocks 601 can limit the swinging of the deflector rod 402 to limit the initial state and the finished state of the panel 102.

Referring to fig. 6, it can be appreciated that the panel 102 is in an initial state, i.e., in a first state, with the user positioned in front of the panel 102.

Referring to fig. 7, it will be appreciated that the panel 102 is in an intermediate state, and the user pushes the panel 102 such that the panel 102 moves rearward such that the housing begins to reveal the handle channel 4001.

Referring to fig. 8, it can be appreciated that the panel 102 is in a finished state, the panel 102 is moved to a rear limit position, and the handle groove 4001 is completely exposed, at which time the user can extend his or her hand into the handle groove 4001 to pull the door 101 or the drawer 301 to open the refrigerator.

It should be noted that the second state may refer to an intermediate state and a completion state.

Referring to fig. 9, in one embodiment, the door assembly of the embodiment of the present invention further includes a motor 901, the motor 901 being fixed to the fixed base frame, and 1 or more motors 901 may be used. The output shaft of the motor 901 is fixedly connected with a driving gear 902, the deflector rod 402 is connected with the fixed support 401 through a rotating shaft 903, the rotating shaft 903 is connected with a driven gear 904, and the driving gear 902 and the driven gear 904 are meshed with each other. One end of the shift lever 402 is fixed to the rotation shaft 903, the shift lever 402 and the rotation shaft 903 do not move relatively, and the rotation shaft 903 is rotatably connected to the fixing bracket 401, so that the shift lever 402 swings back and forth around the axis of the rotation shaft 903 together with the rotation shaft 903. When the motor 901 rotates, the front panel 102 swings back and forth, i.e., moves telescopically in the axial direction of the opening 4002, by the transmission of the driving gear 902 and the moving gear, the rotation shaft 903, and the lever 402.

Referring to fig. 10, in another embodiment, the door assembly of the embodiment of the present invention further includes a motor 901, the motor 901 being fixed to the fixed base frame, and 1 or more motors 901 may be used. The deflector rod 402 is connected to the fixed support 401 through a rotating shaft 903, and an output shaft of the motor 901 is connected with the rotating shaft 903 through a rotating shaft connecting sleeve 1001, so that rotation transmission is realized. One end of the shift lever 402 is fixed to the rotation shaft 903, the shift lever 402 and the rotation shaft 903 do not move relatively, and the rotation shaft 903 is rotatably connected to the fixing bracket 401, so that the shift lever 402 swings back and forth around the axis of the rotation shaft 903 together with the rotation shaft 903. When the motor 901 rotates, the front panel 102 swings back and forth, i.e., moves telescopically along the axial direction of the opening 4002, by the transmission of the rotary shaft connecting sleeve 1001, the rotary shaft 903 and the shift lever 402.

By referring to fig. 9 and 10, a driving device is added, and the driving device drives the shift lever 402 to rotate, so that the door body 101 is opened and closed, and the operation is convenient. In addition, can also cooperate the sensor to use, realize man-machine mutual inductance, improve the technological sense of product, solve refrigerator younger, intelligent, technological sense and have the demand of the beautiful handle that opens the door of outward appearance. For example, without touching the panel 102 by a human hand, when a human approaches the door body 101, the sensor senses a target signal, and controls the motor 901 to rotate, so that the panel 102 is in a completed state, revealing the handle groove 4001.

It should be noted that, driving devices other than those shown in fig. 9 and 10 may be used to drive the lever 402 to rotate.

Referring to fig. 11, it will be appreciated that one end of the lever 402 is provided with a guide boss 1101 and the faceplate 102 is provided with a guide waist-shaped aperture 1102. The guide waist-shaped holes 1102 are arranged along the up-down direction, and the guide waist-shaped holes 1102 or the guide waist-shaped grooves 1302 are matched with the guide bosses 1101, so that the guide bosses 1101 can relatively move along the up-down direction in the guide waist-shaped holes 1102 in the process of swinging the panel 102 back and forth. Particularly, the sliding shaft 501 is matched with the panel 102, so that the panel 102 can be better kept to move along the horizontal direction rather than move along each other, the panel 102 can slide more smoothly, the space required by the panel 102 in the up-down direction is reduced, namely the height of the handle groove 4001 in the up-down direction is reduced, and the structure is more compact.

Referring to fig. 12, it can be appreciated that the faceplate 102 may also be provided with a guide boss 1101, and one end of the lever 402 is provided with a guide waist hole 1102 that mates with the guide boss 1101. That is, the solution of fig. 12 is to interchange the positions of the guide bosses 1101 and the guide waist holes 1102 as compared to the solution of fig. 11.

Referring to fig. 13 to 15, it will be understood that the door assembly according to the embodiment of the present invention may further be provided to include a housing (not shown), a panel 102, a sliding shaft 501, and a tilting lever 1301, wherein the housing is provided with a pull tab groove 4001, the pull tab groove 4001 has an opening 4002, the panel 102 is provided at the opening 4002, and the panel 102 is telescopically moved along an axial direction of the opening 4002 by the guide of the sliding shaft 501. One end of the warping bar 1301 is connected to the panel 102, and the other end of the warping bar 1301 is used for abutting against the housing to provide a reaction force to push the panel 102 to move.

Referring to fig. 16, it can be understood that, in the initial state of the panel 102, the side surface of the tilting lever 1301 is close to the housing, that is, close to the inner wall of the handle groove 4001, the user pushes the panel 102 from the front of the panel 102, and if the panel 102 is jammed and cannot move smoothly along the axial direction of the sliding shaft 501, the end of the panel 102 close to the sliding shaft 501 has a tendency to stay in the original position, and the end of the panel 102 far from the sliding shaft 501 has a tendency to move towards the rear of the panel 102, so that the panel 102 is inclined, as shown in fig. 17. In the state shown in fig. 17, one end of the tilting lever 1301 abuts against the housing, that is, against the inner wall of the handle groove 4001, and the one end of the tilting lever 1301 abutting against the housing is initially kept still, and a force is provided to push the panel 102 to move along the axial direction of the sliding shaft 501, so that the one end of the panel 102 close to the sliding shaft 501 can also move, that is, the panel 102 moves backward as a whole, to expose the handle groove 4001, and the user can reach into the handle groove 4001 to pull the door 101 or the drawer 301 to open the refrigerator.

It will be appreciated that a sliding hole may be provided on the panel 102 or the warping bar 1301 for the sliding shaft 501 to pass through. Wherein the diameter of the slide hole may be slightly larger than the slide shaft 501 diameter to allow tilting of the faceplate 102. Or the sliding shaft 501 may be replaced by a sliding groove, and the panel 102 or the tilting bar 1301 is provided with a bump, and the bump slides along the sliding groove to drive the panel 102 to move. The bumps may be configured as circular shafts or the width of the chute may be greater than the height of the bumps, thereby allowing the panel 102 to tilt.

Referring to fig. 14, it can be understood that the door assembly according to the embodiment of the present invention further includes a slider 1401, the slider 1401 is slidably connected to the sliding shaft 501, and the tilt rod 1301 is rotatably connected to the slider 1401, so that the panel 102 can be driven to move by sliding the slider 1401 along the sliding shaft 501, and the tilt rod 1301 is not affected to rotate to contact with the housing to generate a force to push the panel 102 to move along the axial direction of the sliding shaft 501. Specifically, the tilting bar 1301 is provided with a pin 1402, and the slider 1401 is provided with a pin hole (not shown in the figure), and the pin 1402 is inserted through the pin hole, so that the tilting bar 1301 can rotate around the slider 1401. The side of the warping rod 1301 is connected to the panel 102 through a screw, so that the assembly is convenient.

Referring to fig. 14, it can be understood that a return spring 1403 is disposed between the slider 1401 and the tilting lever 1301, one end of the return spring 1403 abuts against the slider 1401, and the other end abuts against the tilting lever 1301, and when the tilting lever 1301 and the panel 102 tilt and the panel 102 is released by hand, the return spring 1403 can return the panel 102 to the upright state.

Referring to fig. 15, 18 and 19, it can be understood that the user pushes the panel 102 from the front of the panel 102, the panel 102 receives the pushing force of the user and transmits the pushing force to the tilting lever 1301, the tilting lever 1301 tilts at a position close to the force application point of the user, so that the tilting lever 1301 tilts, the sliding block 1401 is kept motionless or slightly displaced, and the rear end of the tilting lever 1301 abuts against the housing, so as to provide a backward acting force, and the backward acting force pushes the sliding block 1401 to move backward, thereby driving the panel 102 to move backward. The whole process utilizes the lever principle to push the panel 102, so that more labor is saved, and the hand pushing is more convenient.

It will be appreciated that the door assembly further comprises a driving device, and the sliding block 1401 is driven by the driving device to slide, so as to drive the panel 102 to move together, so as to switch the handle groove 4001 between the use state and the hidden state. The door assembly may further comprise a detection device for detecting a signal of a user, and controlling the driving device to start after detecting the signal of the user, wherein the detection trigger signal comprises one of the following components: gesture, voice, touch, mechanical key. Through detection device and drive arrangement's cooperation, realize that man-machine is mutual-inductance, improve the technological sense of product. And when the power is off, the panel 102 can be pushed to move by the tilting bar 1301, so that the resistance of the driving device is overcome, and the labor is saved.

Referring to fig. 20, it will be appreciated that the embodiment of fig. 20 primarily changes the relative positions of pin 1402 and return spring 1403 with respect to sliding shaft 501 as compared to the embodiment shown in fig. 19. Specifically, as shown in fig. 19, the pin 1402 is located at the lower side of the slide shaft 501, and the return spring 1403 is located at the upper side of the slide shaft 501. As shown in fig. 20, the pin 1402 is located on the upper side of the slide shaft 501, and the return spring 1403 is located on the lower side of the slide shaft 501. The pin 1402 is used as a fulcrum for the tilting bar 1301 to rotate around the sliding block 1401, and the stress relation in the lever structure is changed through the changed fulcrum position, so that the force for pushing the panel 102 is adjusted and then is converted into the force for adjusting the tilting bar 1301 to warp. The pin 1402 of the embodiment of fig. 20 is positioned farther from the point of application of the push panel 102 than the embodiment shown in fig. 19, so that the user can push the panel 102 with less push force.

It should be noted that, in other embodiments, the pin 1402 and the return spring 1403 may be located on the same side of the sliding shaft 501, which is not limited herein.

Referring to fig. 21, it can be appreciated that in some particular scenarios, where the human hand is not fully extracted, the driving means drives the panel 102 back, i.e. the goal is to return the panel 102 from the completed state to the initial state. If the hand of a person is clamped between the panel 102 and the shell, the panel 102 is stressed to drive the tilting rod 1301 to tilt by a certain angle a, so that the user is prevented from being injured by the clamp.

Referring to fig. 21, it can be understood that the lower end surface of the slider 1401 is provided with a magnet 2001, and the upper end surface of the panel 102 is provided with a hall sensor 2002, the hall sensor 2002 being opposite to the position of the magnet 2001, so that the hall sensor 2002 can sense the magnetic signal of the magnet 2001. In the normal operation mode, when the tilting lever 1301 is not tilted, the hall sensor 2002 can sense the magnetic signal of the magnet 2001, and the hall sensor 2002 outputs a signal to be fed back to the control chip, so that the whole mechanism operates normally. In the process of returning the panel 102 from the finished state to the initial state, if the tilting lever 1301 is tilted, the magnet 2001 is separated from the hall sensor 2002, the hall sensor 2002 cannot sense the magnetic signal of the magnet 2001, the control chip receives another signal, and the control chip can control the driving device to stop running or the driving device to drive the panel 102 to move in a direction away from the opening 4002, so that the clamping action is released, and the function of preventing clamping is realized.

It should be noted that other detecting components may be used instead of the combination of the magnet 2001 and the hall sensor 2002 to determine whether the hand clamping phenomenon occurs, so as to realize further control, which is not limited herein.

In addition, in the driving device according to the embodiment of the present invention, the sliding block 1401 may be further connected to the driving lever 402, and referring to fig. 13 to 15, it may be understood that a guiding waist-shaped groove 1302 is provided on the sliding block 1401, and a guiding boss 1101 is correspondingly provided at one end of the driving lever 402, where the guiding boss 1101 is matched with the guiding waist-shaped groove 1302. The specific connection manner and the beneficial effects of the shift lever 402 refer to the above embodiment, and are not described herein.

Referring to fig. 22, it will be appreciated that the door assembly according to the embodiment of the present invention may further include a first compression spring 2101, where one end of the first compression spring 2101 is connected to the lever 402 and the other end is connected to the fixed bracket 401 or the housing, and the first compression spring 2101 is configured to provide forces in different directions to the lever 402 during rotation of the lever 402, so as to enable the lever 402 to rotate in different directions. Specifically, the fixing bracket 401 is provided with a first mounting portion 2102, the lever 402 is provided with a second mounting portion 2103, and one end of the first compression spring 2101 is connected to the first mounting portion 2102, and the other end is connected to the second mounting portion 2103.

Referring to FIG. 23, it will be appreciated that in the initial state of the door assembly of the present embodiment, the line connecting the first mounting portion 2102 and the second mounting portion 2103 is defined as an indication line 2201, and the direction of the force applied to the lever 402 by the elastic member such as the first compression spring 2101 is the same as the direction of the indication line 2201 toward the lever 402. The line connecting the ends of lever 402 forms a centerline 2202, and first compression spring 2101 is located on the front side of lever 402, and first mount 2102 and second mount 2103 are located on the front side of centerline 2202. In an initial state, the intersection of the indicator line 2201 and the centerline 2202 is located above the center of rotation 2203 of the lever 402, at which point the force of the first compression spring 2101 acting on the lever 402 causes the lever 402 to have a tendency to rotate clockwise, thereby holding the faceplate 102 at the opening 4002.

Referring to FIG. 24, it will be appreciated that the first compression spring 2101 of an embodiment of the present invention is in a critical state, the intersection of the indicator line 2201 with the centerline 2202 coincides with the center of rotation 2203 of the lever 402, and the force of the first compression spring 2101 on the lever 402 does not cause the lever 402 to have a tendency to rotate.

Referring to FIG. 25, it will be appreciated that the door assembly of the present embodiment is in an intermediate condition, the intersection of the indicator line 2201 and the centerline 2202 is shifted below the center of rotation 2203 of the lever 402, at which point the force of the first compression spring 2101 acting on the lever 402 causes the lever 402 to have a tendency to rotate counterclockwise, thereby creating a force assist that assists the user in pushing the faceplate 102 away, causing the faceplate 102 to move quickly rearward.

Referring to FIG. 26, it will be appreciated that the door assembly of the present embodiment is in the completed state, the intersection of the indicator line 2201 and the centerline 2202 is still below the center of rotation 2203 of the lever 402, at which point the force of the first compression spring 2101 acting on the lever 402 causes the lever 402 to have a tendency to rotate counterclockwise, thereby maintaining the faceplate 102 in the completed state.

It will be appreciated that during the process of switching the door assembly of the embodiments of the present invention from the completed state to the initial state, as long as the panel 102 reaches the critical state position shown in fig. 24, the force of the first compression spring 2101 will be converted from resistance to assistance, helping the panel 102 to recover and remain at the opening 4002, and realizing the hidden handle design.

Referring to fig. 27 to 30, it is understood that the first compression spring 2101 may be replaced with the first extension spring 2601, and the second mounting portion 2103 is disposed on the rear side of the center line 2202. Of course, the first extension spring 2601 may be replaced by an elastic member such as a rubber band or an elastic rope, and the structure and the use method are similar, and the first extension spring 2601 will be described below as an example.

Referring to FIG. 27, it will be appreciated that the door assembly of the present embodiment is in an initial state, the intersection of the indicator line 2201 and the centerline 2202 is shifted below the center of rotation 2203 of the lever 402, at which point the force of the first extension spring 2601 acting on the lever 402 causes the lever 402 to have a tendency to rotate clockwise, thereby retaining the faceplate 102 at the opening 4002.

Referring to fig. 28, it will be appreciated that the first extension spring 2601 of the embodiment of the present invention is in a critical state, the intersection point of the indication line 2201 and the center line 2202 coincides with the rotation center 2203 of the lever 402, and the force of the first extension spring 2601 acting on the lever 402 does not cause the lever 402 to have a tendency to rotate.

Referring to FIG. 29, it will be appreciated that the door assembly of the present embodiment is in an intermediate condition, the intersection of the indicator line 2201 and the centerline 2202 is shifted above the center of rotation 2203 of the lever 402, and the force of the first extension spring 2601 acting on the lever 402 causes the lever 402 to have a tendency to rotate counterclockwise, thereby creating a force assist that assists the user in pushing the faceplate 102 away, causing the faceplate 102 to move quickly rearward.

Referring to FIG. 26, it will be appreciated that the door assembly of the present embodiment is in the completed state, the intersection of the indicator line 2201 and the centerline 2202 is still above the center of rotation 2203 of the lever 402, at which point the force of the first extension spring 2601 acting on the lever 402 causes the lever 402 to have a tendency to rotate counterclockwise, thereby maintaining the faceplate 102 in the completed state.

Referring to fig. 31 to 34, it is understood that a first torsion spring 3001 may be employed instead of the first compression spring 2101, with the first mount 2102 and the second mount 2103 each being located on a front side of the center line 2202.

Referring to FIG. 31, it will be appreciated that the door assembly of the present embodiment is in an initial state, with the intersection of the indicator line 2201 and the centerline 2202 being above the center of rotation 2203 of the lever 402, the force of the first torsion spring 3001 on the lever 402 causes the lever 402 to have a tendency to rotate clockwise, thereby retaining the faceplate 102 at the opening 4002.

Referring to FIG. 32, it will be appreciated that the first torsion spring 3001 of the present embodiment is in a critical state, where the intersection of the indicator line 2201 with the centerline 2202 coincides with the center of rotation 2203 of the lever 402, where the force of the first torsion spring 3001 on the lever 402 does not cause the lever 402 to have a tendency to rotate.

Referring to FIG. 33, it will be appreciated that the door assembly of the present embodiment is in an intermediate condition, the intersection of the indicator line 2201 and the centerline 2202 is shifted below the center of rotation 2203 of the lever 402, at which point the force of the first torsion spring 3001 acting on the lever 402 urges the lever 402 to have a tendency to rotate counterclockwise, thereby creating a force assist that assists the user in pushing the faceplate 102 away, causing the faceplate 102 to move quickly rearward.

Referring to FIG. 34, it will be appreciated that the door assembly of the present embodiment is in the completed state, the intersection of the indicator line 2201 and the centerline 2202 is still below the center of rotation 2203 of the lever 402, at which point the force of the first torsion spring 3001 on the lever 402 urges the lever 402 to have a tendency to rotate counterclockwise, thereby maintaining the faceplate 102 in the completed state.

It should be noted that, the door assembly according to the embodiment of the present invention may further include structures such as a guide assembly and a driving device, and specific connection manners and beneficial effects refer to the foregoing embodiments and are not described herein again.

Referring to fig. 35, it will be appreciated that the door assembly according to the embodiment of the present invention may further be provided to include a housing (not shown), a panel 102, a driving device, and a clutch 3401, wherein the housing is provided with a handle groove 4001, the handle groove 4001 has an opening 4002, the panel 102 is provided at the opening 4002, and the panel 102 is moved in a telescopic manner along an axial direction of the opening 4002 by driving of the driving device. And the clutch 3401 is used to control the connection or disconnection of the driving device and the panel 102. In automatic operation, the clutch mechanism 3401 connects the driving device with the panel 102 in a power mode, so that the driving device can drive the panel 102 to move, and automatic control is achieved. When power failure or other sudden conditions occur, manual operation is required, and at this time, the clutch mechanism 3401 enables the driving device and the panel 102 to be disconnected, the driving device cannot be affected by movement of the panel 102, and the driving devices such as the motor 901 are not easily damaged. Also, since there is no resistance of the driving means, the force required to push the panel 102 is smaller, so that the panel 102 is more easily pushed.

Referring to fig. 35, it can be understood that the door assembly according to the embodiment of the present invention further includes a fixing bracket 401 (refer to fig. 9) and a lever 402, wherein the fixing bracket 401 is connected to the inner side of the handle groove 4001, one end of the lever 402 is rotatably connected to the fixing bracket 401 through a rotation shaft 903, the other end is connected to the panel 102, the driving device drives the rotation shaft 903 to rotate, and the clutch mechanism 3401 is disposed between the driving device and the rotation shaft 903. When the clutch mechanism 3401 enables the driving device to be in power connection with the rotating shaft 903, the driving device can drive the panel 102 to move through the rotating shaft 903 and the deflector rod 402. When the clutch 3401 disengages the driving device from the rotation shaft 903, the user pushes the panel 102 to rotate the rotation shaft 903 and the shift lever 402, and the driving device is not affected for at least a period of time.

It should be noted that, in some embodiments, the driving device may be connected to the panel 102 only through the clutch mechanism 3401, instead of being rotatably connected to the housing through the lever 402, for example, two ends of the panel 102, and the driving device drives the panel 102 to rotate along the front-rear direction.

Referring to fig. 36, it can be understood that the clutch mechanism 3401 includes a protrusion 3501 provided on the rotation shaft 903 and a recess 3502 connected to the driving device, the recess 3502 accommodates the protrusion 3501, a notch width of the recess 3502 is larger than a maximum width of the protrusion 3501 located in the recess 3502, so that a rotation gap 3503 exists between the recess 3502 and the protrusion 3501, that is, the recess 3502 and the protrusion 3501 are located on the same circle, and a curvature of the recess 3502 is larger than a curvature of the protrusion 3501. Because of the rotational gap 3503, the male part 3501 does not contact with the side wall of the female part 3502 at a specific position, and thus transmission is not achieved. When one side of the rotation direction of the protrusion 3501 is in contact with the side wall of the recess 3502, the protrusion 3501 and the recess 3502 rotate together, thereby realizing transmission.

In the combined structure of the protruding portion 3501 and the rotation shaft 903, the protruding portion 3501 may be formed as a single piece and then attached to the rotation shaft 903, or the protruding portion 3501 and the rotation shaft 903 may be formed by processing the same material.

Referring to fig. 37, it can be appreciated that the door assembly of the embodiment of the present invention is in an initial state. The driving device includes a motor 901, a driving gear 902 is connected to an output shaft of the motor 901, a driven gear 904 is connected to a rotation shaft 903, the driving gear 902 is meshed with the driven gear 904, and a recess 3502 is provided in the driven gear 904. The user pushes the panel 102 from the front of the panel 102, the panel 102 rotates the rotation shaft 903 and the lever 402, and the protrusion 3501 rotates in the counterclockwise direction along with the rotation shaft 903. At this time, the convex portion 3501 and the upper side of the concave portion 3502 are abutted, and the convex portion 3501 and the lower side of the concave portion 3502 are not in contact, and therefore, the concave portion 3502 does not rotate with the convex portion 3501.

Referring to fig. 38, it can be understood that the door assembly of the embodiment of the present invention is in the intermediate state, since only the protrusion 3501 rotates and the recess 3502 remains stationary, both sides of the protrusion 3501 and the recess 3502 are not in contact, and the protrusion 3501 is not rotated by the resistance of the motor 901.

Referring to fig. 39, it can be understood that the door assembly of the embodiment of the present invention is in a completed state, the lower sides of the protrusion 3501 and the recess 3502 are abutted, and a large gap is provided between the protrusion 3501 and the upper side of the recess 3502. The protrusion 3501 does not rotate the recess 3502 when the door assembly is returned to the initial state from the completed state, i.e., the protrusion 3501 is rotated without resistance from the motor 901.

Referring to fig. 40, it will be appreciated that the door assembly of the embodiment of the present invention is in a completed state, but unlike the state of fig. 39, the panel 102 of fig. 40 is moved from the initial state of fig. 37 to the completed state by the motor 901. During this time, the driven gear 904 rotates the protrusion 3501 and the rotation shaft 903 through the recess 3502, and the protrusion 3501 and the upper side of the recess 3502 are kept in contact with each other. When the door assembly returns to the initial state from the completed state, the driven gear 904 idles by a certain angle to eliminate the gap between the lower sides of the protrusion 3501 and the recess 3502, so that the lower sides of the protrusion 3501 and the recess 3502 abut against each other, and the motor 901 can drive the rotation shaft 903 to rotate.

It can be understood that the output shaft of the motor 901 may be connected to the rotating shaft 903 through the rotating shaft connecting sleeve 1001, at this time, the concave portion 3502 is disposed on the rotating shaft connecting sleeve 1001, and the convex portion 3501 is disposed on the rotating shaft 903, which can achieve the clutch effect.

It should be noted that, the clutch mechanism 3401 may also be replaced by a driven disc, a driving disc and a pressure disc, and the driving device transmits power to the driven disc through friction action of contact surfaces of the driving disc and the pressure disc with the driven disc. The separation or engagement of the drive means from the panel 102 is achieved by controlling whether the driven and driving discs are engaged.

Referring to fig. 35, it will be appreciated that the door assembly of the present embodiment further includes a guide assembly such as a sliding shaft 501 to better guide the movement of the panel 102.

It will be appreciated that, since in the initial state, the first compression spring 2101 compresses the panel 102 at the opening 4002, when the user pushes the panel 102 away, the force of the first compression spring 2101 needs to be overcome, so that the first compression spring 2101 compresses and switches to the critical state, and then the first compression spring 2101 can release the elastic potential energy, so as to form an assisting force to assist the user in pushing the panel 102 away. Therefore, in the distance from the initial state to the critical state, the force generated by the first compression spring 2101 is the resistance of pushing the panel 102 by the user, the panel 102 is pushed by the combination of the tilting lever 1301, the edge of the end face of the tilting lever 1301 abuts against the inner side of the shell to enable the tilting lever 1301 to tilt, the panel 102 is pushed by utilizing the lever principle, the force is saved, the elasticity of the first compression spring 2101 in the conversion process is overcome, and the user experience is improved. In addition, after the panel 102 passes through the critical state, the thrust action of the warping rod 1301 is reduced, and the action of the assistance force of the first compression spring 2101 is improved, so that the defect that only the first compression spring 2101 or only the warping rod 1301 is overcome in the whole process, and a complementary effect is formed.

It will be appreciated that if the panel 102 is pushed by the assistance of the tilting bar 1301 in the case of power outage, the driving device is easily damaged due to the connection of the driving device such as the motor 901 and the panel 102 in the case of large pushing force. By combining the clutch mechanism 3401 together, when the panel 102 is pushed, the clutch mechanism 3401 enables the driving device and the panel 102 to be separated, so that the motor 901 is effectively protected from being damaged. Also, since there is no resistance of the driving means, the force required to push the panel 102 is smaller, so that the panel 102 is more easily pushed. In addition, since the clutch 3401 has a gap, if the force is far, the force is transmitted less when the panel 102 is pushed, and a seizure phenomenon may occur. By using the combination of the tilting bar 1301, the panel 102 is pushed by hand, the panel 102 is pushed by utilizing the lever principle, so that the labor is saved, and the possibility of blocking is reduced.

It will be appreciated that in the initial state, the clutch mechanism 3401 disengages the driving device from the panel 102, and the panel 102 is disengaged from the limitation of the driving device, so that the panel 102 is easy to shake, and a certain offset occurs, i.e. the position of the panel 102 is difficult to maintain at the opening 4002, resulting in poor hiding effect. Also, since the clutch 3401 has a gap, if the force is far, the force is transmitted less when the panel 102 is pushed, and a seizure phenomenon may occur. And by using in combination with the first compression spring 2101, the first compression spring 2101 presses the panel 102 at the opening 4002 in the initial state, thereby improving the hiding effect. In addition, since there is no resistance of the driving device and the elastic member provides assistance, the force required to push the panel 102 is smaller, so that the panel 102 is easier to push, and the possibility of jamming is reduced.

Referring to fig. 41 and 42, it can be understood that the handle groove 4001 includes a catch groove portion 4003 and a movable groove portion 4004, the catch groove portion 4003 communicates with the movable groove portion 4004, the opening 4002 communicates with the movable groove portion 4004, and the panel 102 is located in the movable groove portion 4004. The movable groove portion 4004 accommodates the telescopic movement of the panel 102 in the axial direction of the opening 4002, and a human hand enters the catch groove portion 4003 after extending into the opening 4002, so that the door body 101 can be pulled.

Referring to fig. 41 and 42, it can be understood that the door assembly according to the embodiment of the present invention further includes a light source 4005, where the light source 4005 is used for illuminating the handle groove 4003, and by providing the light source 4005, the light source 4005 can be turned on when the user pushes the panel 102 open, so as to illuminate the area where the handle groove 4003 is located, indicate the position of the handle groove 4003, and facilitate the use of the user and improve the user experience.

Referring to fig. 41 and 42, it can be understood that the light source 4005 is disposed on the inner wall of the handle groove 4003 and on the side of the handle groove 4003 away from the panel 102, that is, on the side away from the movable groove 4004, by moving the light source 4005 away from the panel 102, the light source 4005 is not easily touched by a human hand, and the position of the handle groove 4003 can be better indicated.

It will be appreciated that the outer surface of the light source 4005 is flush with the inner wall surface of the clasp groove 4003 to prevent false touches. The inner wall of the handle groove 4003 is provided with a mounting concave position, and the mounting concave position accommodates the light source 4005, so that the outer surface of the light source 4005 is flush with the inner wall surface of the handle groove 4003, the handle groove 4003 can be illuminated, and a person can touch the light source 4005 by mistake after penetrating into the handle groove 4003.

It is understood that the housing may be made of a light transmissive material, such as glass. Through adopting the printing opacity material, can make the light that light source 4005 sent can pass the shell, the user of convenience more finds the position of knot hand groove portion 4003 fast to need not the hand to go touch all around and look for the position of knot hand groove portion 4003.

Referring to fig. 41, it can be appreciated that the door assembly of the embodiment of the present invention is in an initial state. At this time, the outer surface of the panel 102 is flush with or smoothly transitions from the outer surface of the housing, and the light source 4005 remains off.

Referring to fig. 42, it can be appreciated that the door assembly according to the embodiment of the present invention is in a completed state, where the panel 102 is retracted in the movable groove 4004 to expose the handle groove 4003, the light source 4005 is turned on, and the handle groove 4003 and the movable groove 4004 are illuminated, so that a user can conveniently see the position of the handle groove 4003.

It is understood that the light source 4005 can be used in combination with a detection element such as a travel switch, providing convenience in use. For example, a travel switch is provided on the path along which the panel 102 moves, and when the user pushes the panel 102 to move toward the inside of the movable groove 4004, or the driving device drives the panel 102 to move toward the inside of the movable groove 4004, the travel switch is touched to control the light source 4005 to be turned on.

Referring to fig. 43 and 45, it can be understood that the panel 102 includes a grip portion 4201, two first connection portions 4202, and two second connection portions 4401, the grip portion 4201 being disposed in an axial direction parallel to the rotation shaft 903, the two first connection portions 4202 being connected to both ends of the grip portion 4201 and disposed in an axial direction perpendicular to the rotation shaft 903, respectively, and both ends of the second connection portion 4401 being connected to the first connection portions 4202 and the lever 402, respectively, and disposed in an axial direction parallel to the rotation shaft 903. The grip 4201 protrudes from the opening 4002, and is gripped by a user outside the housing. The second connection portion 4401 is for connecting the lever 402 to transmit power, and the first connection portion 4202 is for connecting the grip portion 4201 and the second connection portion 4401, and integrally forms a handle shape.

It is to be understood that the first connection portion 4202 may be disposed in a direction away from the back surface of the grip portion 4201, that is, in a rearward direction, and is not particularly limited herein.

Referring to fig. 44, it can be understood that the fixing bracket 401 is provided with a rear cover 4301, and a shutter 4302 is provided on the rear cover 4301. Referring to fig. 46, it can be appreciated that the shutter 4302 includes a retractable push rod 4501, the push rod 4501 being disposed between the faceplate 102 and the fixing bracket 401, the entire faceplate 102 being normally retractable within the pull cup 4001 when the push rod 4501 is in the retracted state. When the push rod 4501 is in the extended state, the grip portion 4201 and a part of the first connection portion 4202 are pushed out of the handle groove 4001, forming a shape for a user to grip.

Referring to fig. 46 to 55, it can be understood that the shutter 4302 includes a housing 4502, a slide 4503, and a second compression spring 4504, the housing 4502 is provided with a guide chute 4505 of a closed shape, the guide chute 4505 has a first stop 4802 and a second stop 4803, the slide 4503 is located between the guide chute 4505 and the push rod 4501, one end of the slide 4503 is provided with a sliding portion 4801, and the sliding portion 4801 is located in the guide chute 4505. The housing 4502 is provided with a guide hole, the push rod 4501 is inserted through the guide hole (not shown in the figure), two ends of the second compression spring 4504 are respectively connected with the push rod 4501 and the housing 4502, and the push rod 4501 stretches and contracts along the axial direction of the guide hole, so that the second compression spring 4504 is compressed or stretched. Be equipped with rotation portion 4701 on the push rod 4501, rotation portion 4701 is connected with the gleitbretter 4503 rotation, and rotation portion 4701's axis is perpendicular to push rod 4501's axis, and push rod 4501 is connected with the gleitbretter 4503 rotation through rotation portion 4701 for push rod 4501's removal drives gleitbretter 4503 and removes, and the locking of gleitbretter 4503 can restrict the removal of push rod 4501. In order to enable the movement track of the slide sheet 4503 to be more controllable, the shell 4502 is further provided with a strip-shaped limiting groove 4702, the rotating portion 4701 is provided with a limiting portion 4703, the limiting portion 4703 is located in the limiting groove 4702, and therefore one end of the slide sheet 4503 moves linearly along the limiting groove 4702, and the other end moves circumferentially along the guide slide groove 4505.

Specifically, in the first state, the sliding portion 4801 is located at the first stop position 4802, so that the push rod 4501 is kept in the contracted state. In the second state, the sliding portion 4801 is located at the second stop position 4803, so that the push rod 4501 is maintained in the extended state. In other words, the first stop 4802 and the second stop 4803 can each keep the sliding portion 4801 in a relatively stable state, and the push rod 4501 can be kept at a predetermined position without being separated from each other by an external force.

Referring to fig. 47, it can be appreciated that the door assembly of the embodiment of the present invention is in an initial state (hidden state). At this time, the outer surface of the grip 4201 is flush with or smoothly transitions with the outer surface of the housing. Correspondingly, referring to fig. 48, at this time, push rod 4501 is retracted within housing 4502, and second compression spring 4504 is in a compressed state. Referring to fig. 49, the sliding portion 4801 is positioned at the first stop position 4802, and the stopper portion 4703 is positioned at an end of the stopper groove 4702 near the guide groove 4505. The broken line in the drawing indicates the movement paths of the sliding portion 4801 and the stopper portion 4703.

Referring to fig. 50, it can be appreciated that the door assembly of the embodiment of the present invention is in an intermediate state. At this time, the outer surface of the grip 4201 starts to protrude outside the handle groove 4001, and the outer surface of the grip 4201 protrudes from the outer surface of the housing in appearance. Correspondingly, referring to fig. 51, at this time, the push rod 4501 is ejected outward from the guide hole by the second compression spring 4504 to push the second connection portion 4401 to move, so that the grip portion 4201 protrudes out of the handle groove 4001. Referring to fig. 52, the pushing rod 4501 is pushed by the holding portion 4201 to move backward a distance, so that the sliding portion 4801 is separated from the first stop 4802, and then the second compression spring 4504 acts on the pushing rod 4501 to drive the sliding piece 4503 to move toward the second stop 4803.

Referring to fig. 53, it can be appreciated that the door assembly of the embodiment of the present invention is in a completed state (in-use state). At this time, the holding portion 4201 and a portion of the first connection portion 4202 extend out of the handle groove 4001, so as to be convenient for a user to hold. Correspondingly, referring to fig. 54, at this time, the push rod 4501 is in a fully extended state, and the second compression spring 4504 is restored or in a slightly compressed state. Referring to fig. 55, the sliding portion 4801 is located at the second stop position 4803, and the limiting portion 4703 is located at an end of the limiting groove 4702 away from the guide groove 4505.

It will be appreciated that when it is desired to restore the door assembly from the completed state to the initial state, the user pushes the grip 4201 to move rearward, compressing the second compression spring 4504, and the sliding portion 4801 to move in the clockwise direction of fig. 55 from the second stop 4803 to the first stop 4802.

In the above-described example, the sliding portion 4801 is stopped at the first stop position 4802 by the recess formed in the guide chute 4505, and the sliding portion 4801 is stopped at the second stop position 4803 by the push rod 4501 abutting against the housing 4502, or by the stop portion 4703 abutting against one end of the stop slot 4702. In other embodiments, for example, the guide groove 4505 is not in communication with the limiting groove 4702, and the sliding portion 4801 is stopped at the second stop position 4803 by the sliding portion 4801 abutting against the edge of the guide groove 4505.

Referring to fig. 55, it can be appreciated that the first stop 4802 is offset from the axis of the limiting groove 4702, that is, the first stop 4802 is not collinear with the axis of the limiting groove 4702, such that when the slide 4503 moves rearward, the slide 4801 moves toward a side away from the axis of the limiting groove 4702, thereby disengaging the first stop 4802. In order to further control the sliding direction of the sliding portion 4801, the first stop 4802 is provided to have a height on the side closer to the axis of the limiting groove 4702 greater than the height on the side farther from the axis of the limiting groove 4702, so that the sliding portion 4801 is guided to move toward the side farther from the axis of the limiting groove 4702. In addition, a guide inclined surface 5401 is provided for guiding the sliding portion 4801 to move from the second stop position 4803 to the first stop position 4802, and the guide inclined surface 5401 is configured to intersect with the axis of the limiting groove 4702, that is, the guide inclined surface 5401 is located on the extension line of the limiting groove 4702, so that the sliding portion 4801 moves in a straight line to reach the guide inclined surface 5401, then moves along the guide inclined surface 5401, and finally falls into the first stop position 4802.

Referring to fig. 56, it can be appreciated that the second compression spring 4504 may be replaced by a second extension spring 5501, specifically, a connection end is disposed on each of the push rod 4501 and the housing 4502, and two ends of the second extension spring 5501 are respectively connected to two connection ends, so that different deformation amounts are generated along with movement of the push rod 4501 to provide a restoring force, and detailed movement process will not be repeated herein with reference to the embodiment of the second compression spring 4504.

The second extension spring 5501 may be replaced by an elastic member such as a rubber band or an elastic cord.

Referring to fig. 57, it can be appreciated that the second compression spring 4504 may be replaced by a second torsion spring 5601, where two ends of the second torsion spring 5601 are connected to the push rod 4501 and the housing 4502, respectively, so that different deformation amounts are generated along with movement of the push rod 4501 to provide a restoring force, and detailed movement process will not be repeated herein with reference to the embodiment of the second compression spring 4504.

The push rod 4501 may be driven by a driving mechanism such as a linear motor 901.

The embodiment of the invention provides a control method of a door assembly, which is applied to the door assembly in the above embodiment, wherein the structure or the component constitution of the door assembly is described in detail in the above embodiment, and is not repeated here. Referring to fig. 58, the control method according to the embodiment of the present invention includes, but is not limited to, step S5710, step S5720, and step S5730.

In step S5710, the control panel transitions from the first state to the second state in response to detecting the target object.

The detection device is used for detecting signals of a user, and then controlling the driving device to start after detecting the signals of the user, the driving device controls the panel to stretch and retract along the axial direction of the opening through the deflector rod, and when the using handle of the user is detected, the panel of the control part protrudes out of the opening or the panel is contracted in the shell. Detecting the trigger signal includes one of: gesture, voice, touch, mechanical key. Through detection device and drive arrangement's cooperation, realize that man-machine is mutual-inductance, improve the technological sense of product. For example, when the hand is extended to a position close to the panel, the detection device is an infrared sensor, detects that the user is close to a predetermined distance, sends a signal to the control chip, and the control chip controls the driving device to start, so that the panel moves to expose the handle groove or extend out of the holding part. For another example, when the detection device detects that the gesture of the user is the same as the preset gesture, a signal is sent to the control chip, and the control chip controls the driving device to start, so that the panel moves to expose the handle groove or extend out of the holding part. For another example, when the hand touches the panel, the detecting device senses, and then sends a signal to the control chip, and the control chip controls the driving device to start, so that the panel moves to expose the handle groove or extend out of the holding part. Therefore, the present embodiment does not particularly limit the type of the detection signal.

In step S5720, the panel is maintained in the second state in response to continued detection of the target object.

If the user is continuously detected, the handle groove is kept to be exposed, or the state of the holding part is extended, so that the door assembly is in a use state, the door body cannot be prevented from being opened by the user, the problem of clamping the hand cannot occur, and the user experience is improved.

In step S5730, the control panel transitions from the second state to the first state in response to the target object not being detected.

After the detection device obtains a person leaving signal, for example, a person leaves the panel, or the user is detected to be far away from the panel to a set distance, the panel is controlled to return, the outer surface of the panel is flush with the outer surface of the shell or in smooth transition, and the hidden state is restored.

Another embodiment of the present invention also provides a control method of a door assembly, as shown in fig. 59, including but not limited to step S5710, step S5810, step S5820, step S5830, and step S5840.

The detected signal represents that the user is ready to open the door, and the control panel moves, so that the user can use the door conveniently.

Step S5810, when the target object is detected, continuing to keep detection; when the target object is not detected, step S5820 is performed.

If the user signal continues to be detected, representing that the user is still in use, the detection continues until the user signal is not detected, during which the state of the panel does not change, i.e. remains in the second state. If no signal is detected from the user, representing that the user has been used, the next step S5820 is performed.

S5820, start timing.

When no signal of the user is detected, a timer is started, and the time of leaving the user is calculated.

Step S5830, when the timer reaches the first preset time, step S5840 is executed, otherwise, whether the timer reaches the first preset time is continuously detected.

In step S5840, the control panel transitions from the second state to the first state.

After reaching the preset safety time, the user is indicated to be far away, the control panel is returned, the outer surface of the panel is flush with the outer surface of the shell or in smooth transition, and the hidden state is restored. By designing the first preset time as the safety time, the user has enough time to withdraw the hand, thereby reducing the risk of clamping the hand.

Another embodiment of the present invention also provides a control method of a door assembly, which is applied to a door assembly having a clutch mechanism as shown in fig. 35. As shown in fig. 60, the control method of the embodiment of the present invention includes, but is not limited to, step S5910, step S5920, and step S5910, step S5920 are one embodiment of the refinement procedure of step S5710.

In step S5910, in response to detecting the target object, the driving apparatus is controlled to rotate forward at the first speed for a second preset time.

After the detection device obtains the signals of the person, the driving device rotates at a first speed along the positive direction, the driving device drives the concave part to rotate, one side of the concave part is abutted against the convex part, so that the convex part is driven to rotate together, and the panel is enabled to move to the position of the second state after the driving device runs for a second preset time.

In step S5920, the driving device is controlled to reverse at the second speed.

The drive means rotates in the opposite direction at a second speed and the angle of rotation of the drive means is a such that the other side of the recess abuts the protrusion, i.e. the drive means reverses such that the recess rotates a distance equal to the rotational gap between the recess and the protrusion, which remains stationary due to the presence of the rotational gap. By reversing the driving device, the idle time of the concave part is reduced, and the time for the panel return is shortened.

The first speed may be equal to or different from the second speed. Wherein, because the driving device rotates in reverse at the second speed, the second speed is larger than the first speed, and the efficiency is improved.

Another embodiment of the present invention also provides a control method of a door assembly, which is applied to a door assembly having a clutch mechanism as shown in fig. 35. As shown in fig. 61, the control method of the embodiment of the present invention includes, but is not limited to, step S6010, and step S6010, step S6020 are one embodiment of a refinement flow of step S5730.

In step S6010, in response to the target object not being detected, the driving device is controlled to reverse at the third speed for a third preset time.

After the detection device obtains a person leaving signal, the driving device rotates in the opposite direction at a third speed, the driving device drives the concave part to rotate, the other side of the concave part abuts against the convex part, and accordingly the convex part is driven to rotate together, and after the driving device runs for a third preset time, the panel is enabled to move to the position of the first state.

In step S6020, the driving apparatus is controlled to rotate forward at the fourth speed.

The drive means rotates in the forward direction at a fourth speed and the angle of rotation of the drive means is a such that one side of the recess abuts the protrusion, i.e. the drive means rotates forward such that the recess rotates a distance equal to the rotational gap between the recess and the protrusion, which remains stationary due to the presence of the rotational gap. By the driving device rotating forward, the time of idle running of the concave part is reduced, and the time for opening the panel next time is shortened.

The third speed may be equal to or different from the fourth speed. Wherein, because the driving device rotates in the forward direction at the fourth speed, the fourth speed is larger than the third speed, and the efficiency is improved.

Another embodiment of the present invention also provides a control method of a door assembly, which is applied to a door assembly having a clutch mechanism as shown in fig. 21. As shown in fig. 62, the control method of the embodiment of the present invention includes, but is not limited to, step S5710, step S5810, step S6110, step S6120, and step S6130.

Step S5810, when the target object is detected, continuing to keep detection; when the target object is not detected, step S6110 is performed.

In step S6110, the control panel is moved toward the direction of the opening.

Step S6120, when the magnetic signal is detected, continuing to execute step S6110; step 6130 is performed when no magnetic signal is detected.

In the process of the panel returning to the opening, the Hall sensor always senses the magnetic signal of the magnet, and when sensing the magnetic signal, the panel does not deflect, so that the panel can work normally. When no magnetic signal is sensed, the representative panel is blocked by the hand and tilted, so that the Hall sensor is separated from the magnet.

In step S6130, the control panel is stopped or moved in a direction away from the opening.

The control panel is stopped to prevent the panel and the housing from continuing to grip the user's hand. The control panel moves in the direction away from the opening, so that the hand of the user can be loosened, the hand clamping prevention function can be realized, and the possibility that the user is accidentally injured is reduced.

Another embodiment of the present invention also provides a control method of a door assembly, as shown in fig. 63, including but not limited to step S6210.

In step S6210, in response to the power-off restart, the panel is in the second state, and the control panel is switched to the first state.

When the power is off, the panel is being opened or closed, and thus may be in the second state, i.e., the completed state or the intermediate state. When the power supply is re-connected and restarted, the control panel moves to the position of the first state, so that the outer surface of the panel is flush with the outer surface of the shell or in smooth transition, and the hidden state is restored.

Another embodiment of the present invention also provides a control method of a door assembly applied to a door assembly having a clutch mechanism as shown in fig. 41. As shown in fig. 64, the control method of the embodiment of the present invention includes, but is not limited to, step S6310, step S6320, step S6330.

In step S6310, in response to detecting the target object, the control panel transitions from the first state to the second state, controlling the light source to be turned on.

The detection device is used for detecting signals of a user, the driving device is controlled to start after the signals of the user are detected, the driving device stretches out and draws back along the axial direction of the opening through the deflector rod control panel, when the using handle of the user is detected, the control panel is contracted in the shell, and the control light source is started, so that the area where the hand buckling groove part is located is illuminated, the position of the hand buckling groove part is indicated, the use of the user is facilitated, and the user experience is improved. Wherein, the light source is started and the panel is moved without sequence requirement.

In step S6320, in response to continuously detecting the target object, the panel is kept in the second state, and the light source is in the on state.

If the user is continuously detected, the handle groove is kept to be exposed, so that the door assembly is in a use state, the door body is not prevented from being opened by the user, the problem of clamping the hand is avoided, and the user experience is improved. And keep the light source in the on state, can also improve the aesthetic feeling of the door body.

In step S6330, in response to the target object not being detected, the control panel transitions from the second state to the first state, controlling the light source to be turned off.

After the detection device obtains a person leaving signal, for example, a person leaves the panel, or the user is detected to be far away from the panel to a set distance, the panel is controlled to return to the opening, the outer surface of the panel is flush with the outer surface of the shell or in smooth transition, and the hidden state is restored. And the light source is controlled to be turned off, so that energy sources can be saved. Of course, in other embodiments, in step S6320, the light source may be controlled to be turned off, which is not limited herein.

An embodiment of the present invention further provides a control device, which is built in a household appliance such as a refrigerator, and includes one or more control processors and a memory, and is described below by taking one control processor and one memory as an example.

The control processor and the memory may be connected by a bus or other means. The memory, as a non-transitory computer readable storage medium, may be used to store non-transitory software programs as well as non-transitory computer executable programs. In addition, the memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory optionally includes memory remotely located relative to the control processor, the remote memory being connectable to the control device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The non-transitory software program and instructions required to implement the control method applied to the control device in the above-described embodiment are stored in the memory, and when executed by the control processor, the control method applied to the control device in the above-described embodiment is executed, for example, the method steps S5710 to S5730 in fig. 58, the method steps S5710 to S5840 in fig. 59, the method steps S5910 to S5920 in fig. 60, the method steps S6010 to S6020 in fig. 61, the method S5710, the step S5810, the step S6110 to S6130 in fig. 62, the method step S6210 in fig. 63, and the method steps S6310 to S6330 in fig. 64 described above are executed.

An embodiment of the present invention also provides a refrigerator including the control device of the above embodiment.

Since the refrigerator in this embodiment has the control device in any one of the above embodiments, the refrigerator in this embodiment has the hardware structure of the control device in the above embodiment, and the control processor in the control device can call the control program of the refrigerator stored in the memory to realize the control of the control device, and the specific implementation of the refrigerator in this embodiment can refer to the above embodiment, so that redundancy is avoided and no redundant description is provided.

Furthermore, an embodiment of the present invention provides a computer-readable storage medium storing computer-executable instructions that are executed by one or more control processors, for example, by one control processor, and that cause the one or more control processors to execute the control method in the above-described method embodiment, for example, the method steps S5710 to S5730 in fig. 58, the method steps S5710 to S5840 in fig. 59, the method steps S5910 to S5920 in fig. 60, the method steps S6010 to S6020 in fig. 61, the method steps S5710, S5810, the steps S6110 to S6130 in fig. 62, the method steps S6210 in fig. 63, and the method steps S6310 to S6330 in fig. 64 described above.

Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.

Claims

1. A door assembly, comprising:

a housing provided with a handle slot having an opening;

the fixed bracket is connected to the inner side of the handle groove;

a panel located at the opening;

one end of the deflector rod is rotationally connected with the fixed bracket, and the other end of the deflector rod is used for driving the panel to axially stretch and retract along the opening;

one end of the elastic piece is connected with the deflector rod, and the other end of the elastic piece is connected with the fixed bracket or the shell;

wherein the door assembly has a first state in which the outer surface of the panel is flush with or smoothly transitions the outer surface of the housing, and a second state in which the resilient member acts on the lever such that the lever has a tendency to rotate about a first rotational direction; in the second state, part of the panel protrudes out of the opening, or the panel is contracted in the shell, the elastic piece pushes the deflector rod to rotate around a second rotation direction, and the first rotation direction is opposite to the second rotation direction; the elastic piece has a critical state in the process of switching the first state and the second state, and the acting force direction of the elastic piece on the deflector rod faces to the rotation center of the deflector rod in the critical state.

2. The door assembly according to claim 1, wherein the fixing bracket is provided with a first mounting portion, the deflector rod is provided with a second mounting portion, one end of the elastic member is connected to the first mounting portion, the other end is connected to the second mounting portion, and in the critical state, rotation centers of the first mounting portion, the second mounting portion and the deflector rod are located on the same straight line.

3. The door assembly of claim 2, wherein the elastic member is a compression spring or a torsion spring, a line connecting both ends of the lever forms a center line, and the second mounting portion is located at a side of the center line near the first mounting portion.

4. The door assembly of claim 2, wherein the elastic member is an extension spring, a rubber band or an elastic rope, a connecting line of two ends of the deflector rod forms a center line, and the second mounting portion is located at a side of the center line away from the first mounting portion.

5. The door assembly of claim 1, further comprising a guide assembly for guiding the panel for telescopic movement along the axis of the opening.

6. The door assembly of claim 5, wherein the guide assembly comprises a sliding shaft and a slider, the slider is slidably connected to the sliding shaft, both ends of the sliding shaft are fixedly connected to the fixed bracket, the panel is connected to the slider, and the lever is rotatably connected to the panel.

7. The door assembly of claim 1, further comprising a drive device that drives the lever in rotation.

8. The door assembly of claim 7, wherein the lever is coupled to the fixed bracket via a rotary shaft, and the driving means includes a motor, an output shaft of which is coupled to the rotary shaft via a rotary shaft coupling sleeve.

9. The door assembly of claim 7, wherein the lever is coupled to the fixed bracket via a rotational shaft, the driving device includes a motor, an output shaft of the motor is coupled to a driving gear, the rotational shaft is coupled to a driven gear, and the driving gear is engaged with the driven gear.

10. The door assembly of claim 1, wherein the number of the levers is two, and two of the levers are connected to the fixed bracket by a rotation shaft and to both ends of the panel.

11. The door assembly according to claim 10, wherein the panel includes a grip portion, two first connection portions, and two second connection portions, the grip portion being arranged in an axial direction parallel to the rotation shaft, the two first connection portions being connected to both ends of the grip portion and arranged in a direction away from a rear surface of the grip portion, respectively, and both ends of the second connection portions being connected to the first connection portions and the lever, respectively, and arranged in an axial direction parallel to the rotation shaft; in the first state, the outer surface of the grip portion is flush with or smoothly transitions with the outer surface of the housing; in the second state, the holding part and at least part of the first connecting part protrude from the opening.

12. The door assembly according to claim 10, wherein the panel includes a shutter portion arranged in an axial direction parallel to the rotation shaft, and two third connection portions connected to one side of the shutter portion at intervals and arranged in a direction away from a rear surface of the shutter portion, the lever being connected to the third connection portions; in the first state, the outer surface of the baffle part is flush with or smoothly transits with the outer surface of the shell; in the second state, the flap portion is retracted within the housing.

13. A refrigerator comprising a door assembly according to any one of claims 1 to 12.