CN218092753U - Door body structure and household appliance with same - Google Patents

Abstract

The utility model relates to a door body structure and have domestic appliance of this door body structure, both ends are fixed with fixed cover respectively about the outer door plant internal surface, and the upper end of outer door plant internal surface is fixed with the installing support, the lower extreme of each fixed cover is fixed with the hinge respectively, and on each hinge respectively movable mounting have swing joint spare, and each swing joint spare can be respectively through locking structure and the hinge lock that corresponds, under the initial condition, the upper end of well door plant and interior door plant can be dismantled with the installing support respectively and be connected, and the left and right sides of well door plant and interior door plant lower extreme can be dismantled with the swing joint spare that corresponds respectively and be connected, and each swing joint spare is respectively with the hinge lock that corresponds. The utility model discloses well door plant can be dismantled respectively with interior door plant, and the convenience is washd the internal portion of door. Under the initial state, each movable connecting piece locks with corresponding hinge respectively to can lock well door plant and interior door plant, and then enable whole door body and keep in firm mounted state.

Description

Door body structure and household appliance with same

Technical Field

The utility model relates to a domestic appliance field especially relates to a door body structure and have domestic appliance of this door body structure.

Background

Cooking devices having a baking function, such as an oven and a steam oven, bake food in an inner container at a high temperature. In order to prevent the temperature of the door body from being too high and ensure the use safety of users, the door body of a cooking device such as an oven is generally insulated by a three-layer door glass structure. Meanwhile, in order to further reduce the temperature rise of the door body when the cooking device works, the door body is generally structurally designed with a path for guiding the air flowing through the interior of the door body, for example, a chinese invention patent No. ZL201910819853.0 (publication No. CN 112438615B) of "a door body and a cooking device with the door body", and a chinese utility model patent No. ZL202022988961.1 (publication No. CN 215502447U) "a door body structure for a cooking device and a cooking device, etc.

Although the temperature of the door body can be reduced through the design, oil smoke generated when the cooking device works can also enter the door body through the path, so that oil stains are accumulated in the door body. In addition, the conventional door body generally has a fixed assembly structure, so that oil dirt accumulated in the door body is very difficult to clean.

Disclosure of Invention

The utility model aims to solve the first technical problem that provides a convenient door body structure of clearing up to prior art.

The utility model aims to solve the second technical problem that provide a firm and convenient door body structure of clearing up of mounting structure to prior art.

The third technical problem to be solved by the utility model is to provide a domestic appliance with above-mentioned door body structure to prior art.

The utility model provides a technical scheme that at least one above-mentioned technical problem adopted does: a door body structure comprises an outer door plate, an inner door plate and a middle door plate positioned between the outer door plate and the inner door plate, and is characterized in that fixed sleeves extending along the height direction of the outer door plate are respectively fixed at the left end and the right end of the inner surface of the outer door plate, a mounting bracket is fixed at the upper end of the inner surface of the outer door plate along the length direction of the outer door plate, hinges are respectively fixed at the lower ends of the fixed sleeves, movable connecting pieces are respectively movably mounted on the hinges and can be respectively locked with the corresponding hinges through locking structures,

in an initial state, the upper ends of the middle door plate and the inner door plate are respectively detachably connected with the mounting bracket, the left side and the right side of the lower end of the middle door plate are respectively detachably connected with the corresponding movable connecting pieces, the left side and the right side of the lower end of the inner door plate are also respectively detachably connected with the corresponding movable connecting pieces, and the movable connecting pieces are respectively locked with the corresponding hinges.

Furthermore, each movable connecting piece is respectively connected to the corresponding hinge in a left-right rotating mode, and each locking structure respectively comprises a lock catch and a locking block, wherein the lock catch is arranged in the hinge and the movable connecting piece, one lock catch and the other lock catch are arranged at one position, and the lock catch is clamped into the lock block. The unlocking and locking of the locking structure are facilitated, and the door structure is convenient to disassemble and assemble.

Furthermore, each movable connecting piece is respectively provided with a first lower clamping groove and a second lower clamping groove, in an initial state, the left side and the right side of the lower end of the middle door panel are respectively inserted into the corresponding first lower clamping grooves, the left side and the right side of the lower end of the inner door panel are respectively inserted into the corresponding second lower clamping grooves, in an unlocking state, each movable connecting piece rotates relative to the corresponding hinge, each locking block is respectively separated from the corresponding lock catch, meanwhile, the left side and the right side of the lower end of the middle door panel are respectively separated from the corresponding first lower clamping grooves, and the left side and the right side of the lower end of the inner door panel are respectively separated from the corresponding second lower clamping grooves. On the one hand, the centering door body and the inner door body are stably installed in the initial state, and on the other hand, the centering door body and the inner door plate are convenient to disassemble and assemble.

Further, each movable connecting piece comprises a rotating shaft extending forwards and backwards, each hinge is provided with a shaft hole through which each rotating shaft penetrates and the hole extends forwards and backwards, the surface of each rotating shaft is respectively provided with a convex locking piece extending in the direction perpendicular to the rotating shaft in a protruding manner, the rear surface of the free end of each locking piece is provided with a convex first bump in a protruding manner, the surface of each rotating shaft is also respectively provided with a convex first extending piece in a protruding manner, the first extending pieces and the locking pieces are arranged in a parallel and spaced manner forwards and backwards, the free end of each first extending piece extends outwards to form a second protruding piece, the front and back of each first protruding piece and the front and back of each second protruding piece form a first lower clamping groove, the rear end part of each rotating shaft extends outwards in the direction perpendicular to the rotating shaft to form a second extending piece, and the second extending piece is provided with a second lower clamping groove. Thereby can realize each swing joint spare better and correspond the rotation of hinge and be connected, can form above-mentioned locking piece structure, first draw-in groove structure and second draw-in groove structure better simultaneously.

Furthermore, each lock catch is respectively fixed on the inner side of the corresponding hinge, the inner side of each hinge is also respectively fixed with a shaft sleeve extending forwards and backwards, and the central hole of each shaft sleeve respectively forms the shaft hole, so that each movable connecting piece can be better in rotary connection with the corresponding hinge. And the inner side surface of each hinge respectively forms a first limit surface which extends vertically, the outer side end surface of each second lug respectively forms a second limit surface, the pipe wall at the lower end of each shaft sleeve extends along the length direction to form a limit arc wall, each first limit surface is abutted with the corresponding second limit surface inside and outside in an initial state, each first limit surface is separated from the corresponding second limit surface in an unlocking state, and each lock block is abutted with the corresponding limit arc wall. Therefore, each movable connecting piece can be better limited in the initial state, the stability of the door body mounting structure can be better guaranteed, meanwhile, each movable connecting piece in an unlocking shape is limited, and the door body can be conveniently reassembled.

Furthermore, the lower end of the mounting bracket is respectively provided with a first upper clamping groove and a second upper clamping groove which are opened downwards at intervals in the front and back direction, wherein the first upper clamping groove is used for clamping the upper end edge of the middle door plate, and the second upper clamping groove is used for clamping the upper end edge of the inner door plate. Can dismantle the connection of door plant upper end and interior door plant upper end in being convenient for realize like this, during door plant and interior door plant in the installation, with well door plant push-up and make the top edge card of well door plant go into first last draw-in groove, push-up and make the top edge card of interior door plant go into the draw-in groove on the second after that, rotate each swing joint spare up respectively after that, in the second draw-in groove that makes well door plant lower extreme card go into respectively, and the left and right sides of interior door plant lower extreme card respectively goes into the first draw-in groove that corresponds swing joint spare, and simultaneously, the lock piece on each swing joint spare is gone into respectively during the hasp that corresponds the hinge.

Furthermore, end walls are respectively sealed at two ends of each second upper clamping groove, and under the condition that the upper end of the inner door plate is clamped into the second upper clamping grooves, the left end face and the right end face of the upper end of the inner door plate are respectively abutted against the corresponding end walls, so that left and right limiting of the upper end of the inner door plate can be realized.

Further, the left side and the right side of the lower end of the mounting bracket are respectively provided with a buffer block, each buffer block is respectively provided with a mounting groove, and the left side and the right side of the upper end of the middle door plate are respectively clamped into the mounting grooves of the corresponding buffer blocks in a mounting state. Can protect the centering door plant through setting up the buffer block, door plant damages in hard collision of door plant and other parts causes when avoiding the switch door.

Furthermore, the rear side surface of each fixing sleeve is respectively provided with a first mounting plane along the length direction, the middle part of the inner side surface of each fixing sleeve horizontally extends along the length direction to form a first extending plate, the rear surface of the first extending plate is provided with a second mounting plane along the length direction, the left end and the right end of the front surface of the inner door plate respectively prop against the front and the rear of the corresponding first mounting plane in a mounting state, the left end and the right end of the front surface of the middle door plate respectively prop against the front and the rear of the corresponding second mounting plane, and the left end edge and the right end edge of the middle door plate respectively prop against the inner side surface of the corresponding fixing sleeve along the length direction. The correct installation of centering door plant and interior door plant is convenient for realize, can realize simultaneously that centering door plant controls spacingly.

Furthermore, each first installation plane is respectively provided with a first installation groove extending along the length direction of the first installation groove, a first buffer strip is embedded in the first installation groove along the length direction of the first installation groove, the first buffer strip is clamped between the front surface of the inner door plate and the first installation plane when the inner door plate is in an installation state,

and under the installation state of the inner door plate, the second buffer strip is clamped between the front surface of the middle door plate and the second installation plane. Through setting up first buffering strip and second buffering strip and can protect door plant and interior door plant, the rigid collision of each door plant and other parts causes a body to damage when avoiding opening and shutting the door.

Further, the mounting bracket is in a shape of a cover body and covers the upper end part of each fixing sleeve. On the one hand, the internal structure of the door body structure is firm, and on the other hand, the left and right limitation of the internal door plate can be further realized.

Further, the upper end of the outer surface of the outer door panel is provided with a handle extending leftwards and rightwards, the left end and the right end of the mounting bracket are respectively provided with a mounting hole, a fastener penetrates through each mounting hole, and each fastener penetrates through the outer door panel and is fixed with the corresponding end of the handle. Thereby enabling a secure mounting of the handle.

Furthermore, the lock catches of the locking structures respectively have certain elasticity, the sizes of the openings of the lock catches decrease from inside to outside, and the thickness of each locking block is larger than the minimum opening value of the corresponding lock catch. Therefore, each locking piece and the corresponding lock catch can be stably locked, the locking piece is prevented from being separated from the lock catch in a locking state, and the installation reliability of the door body structure is guaranteed.

The technical solution adopted to further solve the third technical problem is as follows: a household appliance is characterized by having the door body structure.

Further, the household appliance is one of a steam box, an oven, a steaming oven, a microwave oven, a disinfection cabinet and a cleaning machine or an integrated combination device of at least two of the steam box, the oven, the steaming oven, the microwave oven, the disinfection cabinet and the cleaning machine.

Compared with the prior art, the utility model has the advantages of: the utility model discloses well door plant can be dismantled respectively with interior door plant, like this when the internal accumulational greasy dirt of the body of needs clearance, only need with well door plant with interior door plant dismantle can, the convenience is washd internal portion of door. And, under initial condition (namely under the assembled state), each movable connecting piece locks with corresponding hinge respectively to can lock well door plant and interior door plant, and then enable whole door body and keep in firm mounted state, guarantee the normal use of door body structure.

Drawings

Fig. 1 is a schematic structural view of a door body structure in an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 in another direction;

fig. 3 is a schematic view of a partial structure of a door body structure according to an embodiment of the present invention (with a hinge and a movable connecting member at one end omitted);

fig. 4 is another schematic partial structural view of the door body structure according to the embodiment of the present invention (in a state of omitting the inner door panel);

fig. 5 is a schematic view of still another partial structure of the door body structure according to the embodiment of the present invention (with the inner door panel and the middle door panel omitted);

FIG. 6 is a partial exploded view of the door body structure according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a movable connection member according to an embodiment of the present invention;

fig. 8 is a schematic view of the structure in the other direction of fig. 7.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, since the disclosed embodiments of the invention may be arranged in different orientations, these directional terms are for illustrative purposes only and should not be considered limiting, as "upper", "lower", and the like are not necessarily limited to directions opposite to or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

As shown in fig. 1 to 8, a household appliance is one of a steam box, an oven, a microwave oven, a disinfection cabinet, a cleaning machine, or an integrated combination of at least two of them, in this embodiment, the household appliance is an oven or a steam oven.

The household appliance comprises a door body structure, and the door body structure comprises an outer door plate 1, an inner door plate 3 and a middle door plate 2 positioned between the outer door plate 1 and the inner door plate 3. In this embodiment, the outer door panel 1, the middle door panel 2, and the inner door panel 3 are all made of door glass, and ventilation interlayers are respectively formed between the outer door panel 1 and the middle door panel 2, and between the middle door panel 2 and the inner door panel 3, so that the surface temperature of the outer door panel 1 can be reduced.

Further, fixed sleeves 5 extending along the height direction of the outer door panel 1 are respectively fixed at the left end and the right end of the inner surface of the outer door panel 1, a mounting bracket 6 is fixed at the upper end of the inner surface of the outer door panel 1 along the length direction of the outer door panel 1, hinges 7 are respectively fixed at the lower ends of the fixed sleeves 5, movable connecting pieces 8 are respectively movably mounted on the hinges 7, and the movable connecting pieces 8 can be respectively locked with the corresponding hinges 7 through locking structures. In an initial state, the upper ends of the middle door panel 2 and the inner door panel 3 are detachably connected to the mounting bracket 6, the left and right sides of the lower end of the middle door panel 2 are detachably connected to the corresponding movable connecting members 8, the left and right sides of the lower end of the inner door panel 3 are also detachably connected to the corresponding movable connecting members 8, and the movable connecting members 8 are locked to the corresponding hinges 7. In this embodiment, each fixing sleeve 5 is fixed to the inner surface of the outer door panel 1 by bonding.

Furthermore, each movable connecting piece 8 is respectively connected to the corresponding hinge 7 in a left-right rotating manner, each locking structure respectively comprises a lock catch 71 arranged in the hinge 7 and the movable connecting piece 8, and the lock catch 71 and the lock block 82 arranged in the other part are clamped into the lock catch 71, so that the locking structure can be conveniently unlocked and locked, and the door body structure can be conveniently disassembled and assembled. Further, as shown in fig. 2, each of the movable connectors 8 has a first lower engaging groove 84 and a second lower engaging groove 851, and in an initial state, both left and right sides of the lower end of the middle door panel 2 are inserted into the corresponding first lower engaging grooves 84, and both left and right sides of the lower end of the inner door panel 3 are inserted into the corresponding second lower engaging grooves 851, and in an unlocked state, each of the movable connectors 8 rotates with respect to the corresponding hinge 7, each of the locking pieces 82 is disengaged from the corresponding locking catch 71, and both left and right sides of the lower end of the middle door panel 2 are disengaged from the corresponding first lower engaging grooves 84, and both left and right sides of the lower end of the inner door panel 3 are disengaged from the corresponding second lower engaging grooves 851. On one hand, the centering door body and the inner door body are stably installed in the initial state, and on the other hand, the centering door body and the inner door plate 3 are convenient to disassemble and assemble.

Specifically, as shown in fig. 7 and 8, each of the movable connecting members 8 includes a rotating shaft 81 extending forward and backward, each of the hinges 7 is provided with a shaft hole 720 through which each of the rotating shafts 81 passes and extends forward and backward, the surface of each of the rotating shafts 81 is provided with the locking piece 82 extending in a direction perpendicular to the rotating shaft 81 in a protruding manner, the rear surface of the free end of the locking piece 82 is provided with a first protrusion 821 protruding outward, the surface of each of the rotating shafts 81 is further provided with a first extending piece 83 protruding outward, the first extending piece 83 is parallel to and spaced from the locking piece 82 forward and backward, the free end of the first extending piece 83 extends outward to form a second protrusion 831, the first protrusion 821 and the second protrusion 831 surround the first lower engaging groove 84 forward and backward, the rear end of each of the rotating shaft 81 extends outward in a direction perpendicular to the rotating shaft 81 to form a second extending piece 85, and the second extending piece 85 is provided with the second lower engaging groove 851. Therefore, the movable connecting pieces 8 can be connected with the corresponding hinges 7 in a rotating mode, and meanwhile the locking block 82 structure, the first clamping groove structure and the second clamping groove structure can be formed well. In this embodiment, preferably, the latches 71 of each locking structure have certain elasticity, the size of the opening of each latch 71 decreases gradually from inside to outside, and the thickness of each locking piece 82 is greater than the minimum opening value of the corresponding latch 71, so as to ensure stable locking of each locking piece 82 and the corresponding latch 71, prevent the locking piece 82 from coming off from the latch 71 in the locked state, and ensure the installation reliability of the door structure.

Further, it is preferable that each of the latches 71 is fixed to an inner side of the corresponding hinge 7, and a sleeve 72 extending forward and backward is further fixed to an inner side of each hinge 7, and a center hole of each sleeve 72 forms the shaft hole 720, so that each of the movable links 8 can be more rotatably connected to the corresponding hinge 7. Furthermore, the inner side of each hinge 7 forms a first limit surface 70 extending vertically, the outer side end of each second protrusion 831 forms a second limit surface 8310, the tube wall of the lower end of each shaft sleeve 72 extends along the length direction thereof to form a limit arc wall 721, in the initial state, each first limit surface 70 abuts against the corresponding second limit surface 8310 from the inside to the outside, and in the unlocked state, each first limit surface 70 is separated from the corresponding second limit surface 8310, and each lock block 82 abuts against the corresponding limit arc wall 721. Thereby enable each swing joint spare 8 can be better by spacing at initial condition, and then can guarantee door body mounting structure's steadiness better, carry on spacingly to each swing joint spare 8 of unblock form simultaneously, conveniently reassemble the door body.

In this embodiment, as shown in fig. 5, the lower end of the mounting bracket 6 is respectively provided with a first upper locking groove 61 and a second upper locking groove 62 at intervals in front and back, wherein the first upper locking groove 61 is used for the upper end edge of the middle door panel 2 to be locked in, and the second upper locking groove 62 is used for the upper end edge of the inner door panel 3 to be locked in. Can dismantle the connection of door plant 2 upper end and interior door plant 3 upper end in being convenient for realize like this, during door plant 2 and interior door plant 3 in the installation, with well door plant 2 push up and make in the upper end edge card of door plant 2 go into first last draw-in groove 61, in going up pushing up and making the upper end edge card of interior door plant 3 go into second last draw-in groove 62, rotate each swing joint spare 8 up respectively after that, in making the left and right sides of well door plant 2 lower extreme respectively go into the second lower draw-in groove 851 that corresponds swing joint spare 8, and in the left and right sides of interior door plant 3 lower extreme respectively card goes into the first lower draw-in groove 84 that corresponds swing joint spare 8, simultaneously, the lock 82 on each swing joint spare 8 is blocked respectively in the hasp 71 that corresponds hinge 7.

Preferably, end walls are respectively sealed at both ends of each second upper locking groove 62, and left and right end surfaces of the upper end of the inner door panel 3 respectively abut against the corresponding end walls in a state where the upper end of the inner door panel 3 is locked into the second upper locking groove 62, so that left and right limits of the upper end of the inner door panel 3 can be realized. Further preferably, as shown in fig. 4 and 5, the mounting bracket 6 is provided with buffer blocks 91 at left and right sides of a lower end thereof, the buffer blocks 91 are respectively provided with mounting grooves 911, and in a mounted state, the upper end of the middle door panel 2 is respectively inserted into the mounting grooves 911 of the corresponding buffer blocks 91 at left and right sides thereof. Can protect centering door plant 2 through setting up buffer block 91, door plant 2 damages in hard collision of door plant 2 and other parts causes in the time of avoiding opening and shutting the door.

In addition, in the present embodiment, as shown in fig. 3, each of the fixing covers 5 has a first mounting plane 5a along the length direction on the rear side surface thereof, and the middle portion of the inner side surface of the fixing cover 5 extends horizontally along the length direction thereof to form a first extension plate 51, the rear surface of the first extension plate 51 has a second mounting plane 5b along the length direction thereof, in the mounted state, the left and right ends of the front surface of the inner door panel 3 respectively abut against the corresponding first mounting plane 5a in the front-back direction, the left and right ends of the front surface of the middle door panel 2 respectively abut against the corresponding second mounting plane 5b in the front-back direction, and the left and right end edges of the middle door panel 2 respectively abut against the inner side surface of the corresponding fixing cover 5 in the length direction. Be convenient for realize centering door plant 2 and interior door plant 3's correct installation, can realize simultaneously that centering door plant 2 controls spacingly, in addition, be convenient for realize above-mentioned each ventilation sandwich structure. Preferably, each of the first installation planes 5a is formed with a first installation recess 52 extending along the longitudinal direction thereof, a first buffer strip 92 is fitted into the first installation recess 52 along the longitudinal direction thereof, and the first buffer strip 92 is interposed between the front surface of the inner door panel 3 and the first installation plane 5a in the installed state of the inner door panel 3. Each of the second mounting planes 5b is provided with a second mounting groove 53 extending in the longitudinal direction thereof, a second buffer strip 93 is fitted into the second mounting groove 53 in the longitudinal direction thereof, and the second buffer strip 93 is interposed between the front surface of the middle door panel 2 and the second mounting plane 5b in the mounted state of the inner door panel 3. Can protect door plant 2 and interior door plant 3 through setting up first buffering strip 92 and second buffering strip 93, the rigid collision of each door plant and other parts when avoiding the switch door causes a body to damage. In this embodiment, the mounting bracket 6 is shaped like a hood and is provided to cover the upper end of each fixing sleeve 5. On the one hand, the internal structure of the door body structure is firm, and on the other hand, the left and right limiting of the inner door plate 3 can be further realized.

In the present embodiment, as shown in fig. 1 and 5, a handle 4 extending in the left and right direction is provided at the upper end of the outer surface of the outer door panel 1, mounting holes 63 are respectively opened at the left and right ends of the mounting bracket 6, fasteners 10 are respectively inserted into the mounting holes 63, and the fasteners 10 are respectively inserted through the outer door panel 1 and fixed to the corresponding ends of the handle 4. Thereby enabling a secure mounting of the handle 4.

Claims (15)

1. A door body structure comprises an outer door plate (1), an inner door plate (3) and a middle door plate (2) positioned between the outer door plate (1) and the inner door plate (3), and is characterized in that the left end and the right end of the inner surface of the outer door plate (1) are respectively fixed with a fixing sleeve (5) extending along the height direction of the outer door plate (1), the upper end of the inner surface of the outer door plate (1) is fixed with a mounting bracket (6) along the length direction of the outer door plate (1), the lower end of each fixing sleeve (5) is respectively fixed with a hinge (7), each hinge (7) is respectively movably provided with a movable connecting piece (8), and each movable connecting piece (8) can be respectively locked with the corresponding hinge (7) through a locking structure,

in an initial state, the upper ends of the middle door panel (2) and the inner door panel (3) are respectively detachably connected with the mounting bracket (6), the left side and the right side of the lower end of the middle door panel (2) are respectively detachably connected with the corresponding movable connecting pieces (8), the left side and the right side of the lower end of the inner door panel (3) are also respectively detachably connected with the corresponding movable connecting pieces (8), and the movable connecting pieces (8) are respectively locked with the corresponding hinges (7).

2. The door structure according to claim 1, wherein each of the movable connecting members (8) is pivotally connected to the corresponding hinge (7) in a left-right direction, and each of the locking structures comprises a locking piece (82) provided in one of the hinge (7) and the movable connecting member (8) and engaged with the locking piece (71) at the other.

3. The door body structure according to claim 2, wherein each of the movable connectors (8) has a first lower engaging groove (84) and a second lower engaging groove (851), and in an initial state, the left and right sides of the lower end of the middle door panel (2) are respectively inserted into the corresponding first lower engaging grooves (84), and the left and right sides of the lower end of the inner door panel (3) are respectively inserted into the corresponding second lower engaging grooves (851), and in an unlocked state, each of the movable connectors (8) rotates relative to the corresponding hinge (7), and each of the locking blocks (82) is respectively disengaged from the corresponding locking catch (71), and simultaneously, the left and right sides of the lower end of the middle door panel (2) are respectively disengaged from the corresponding first lower engaging grooves (84), and the left and right sides of the lower end of the inner door panel (3) are respectively disengaged from the corresponding second lower engaging grooves (851).

4. The door body structure according to claim 3, wherein each of the movable connecting members (8) includes a rotating shaft (81) extending forward and backward, each of the hinges (7) is provided with a shaft hole (720) through which each of the rotating shafts (81) passes and which extends forward and backward, the surface of each of the rotating shafts (81) is provided with a protruding locking piece (82) extending in a direction perpendicular to the rotating shaft (81), the rear surface of the free end of the locking piece (82) is provided with a protruding first protrusion (821) upward, the surface of each of the rotating shafts (81) is further provided with a protruding first extending piece (83), the first extending piece (83) and the locking piece (82) are arranged in parallel and spaced forward and backward, the free end of the first extending piece (83) extends outward to form a second protrusion (831), the first protrusion (821) and the second protrusion (831) form the first lower engaging groove (84) forward and backward,

the rear end of each rotating shaft (81) extends outwards along the direction perpendicular to the rotating shaft (81) to form a second extending block (85), and the second extending block (85) is provided with the second lower clamping groove (851).

5. The door body structure according to claim 4, wherein each of the latches (71) is fixed to an inner side of the corresponding hinge (7), and a boss (72) extending forward and backward is fixed to an inner side of each of the hinges (7), a center hole of each of the bosses (72) constitutes the shaft hole (720),

and the inner side surface of each hinge (7) respectively forms a first limit surface (70) which extends vertically, the outer side end surface of each second bump (831) respectively forms a second limit surface (8310), the pipe wall of the lower end of each shaft sleeve (72) extends along the length direction thereof to form a limit arc wall (721), each first limit surface (70) is abutted with the corresponding second limit surface (8310) in the initial state, each first limit surface (70) is separated from the corresponding second limit surface (8310) in the unlocking state, and each lock block (82) is abutted with the corresponding limit arc wall (721).

6. The door structure according to any one of claims 1 to 5, wherein the lower end of the mounting bracket (6) is provided with a first upper locking groove (61) and a second upper locking groove (62) which are spaced from each other in a front-to-back manner and open downwards, wherein the first upper locking groove (61) is used for locking the upper end edge of the middle door panel (2), and the second upper locking groove (62) is used for locking the upper end edge of the inner door panel (3).

7. The door body structure according to claim 6, wherein end walls are respectively sealed at both ends of each second upper locking groove (62), and left and right end surfaces of the upper end of the inner door panel (3) respectively abut against the corresponding end walls in a state where the upper end of the inner door panel (3) is locked in the second upper locking groove (62).

8. The door body structure according to claim 6, wherein the left and right sides of the lower end of the mounting bracket (6) are respectively provided with a buffer block (91), each buffer block (91) is respectively provided with a mounting groove (911), and in a mounting state, the left and right sides of the upper end of the middle door panel (2) are respectively clamped into the mounting grooves (911) of the corresponding buffer blocks (91).

9. The door structure according to claim 6, wherein each of the fixing covers (5) has a first mounting plane (5 a) extending along a length direction thereof on a rear side thereof, and a middle portion of an inner side of each of the fixing covers (5) horizontally extends along the length direction thereof to form a first extension plate (51), the first extension plate (51) has a second mounting plane (5 b) extending along the length direction thereof on a rear surface thereof, and in a mounted state, left and right ends of a front surface of the inner door panel (3) respectively abut front and rear of the corresponding first mounting plane (5 a), and left and right ends of a front surface of the middle door panel (2) respectively abut front and rear of the corresponding second mounting plane (5 b), and left and right end edges of the middle door panel (2) respectively abut against the inner side of the corresponding fixing cover (5) along the length direction thereof.

10. The door body structure according to claim 9, wherein each of the first installation planes (5 a) is formed with a first installation groove (52) extending in a longitudinal direction thereof, a first cushion strip (92) is fitted in the first installation groove (52) in the longitudinal direction thereof, and the first cushion strip (92) is interposed between a front surface of the inner door panel (3) and the first installation plane (5 a) in an installed state of the inner door panel (3),

each second mounting plane (5 b) is provided with a second mounting groove (53) extending along the length direction of the second mounting plane, a second buffer strip (93) is embedded in each second mounting groove (53) along the length direction of the second mounting groove, and the second buffer strips (93) are clamped between the front surface of the middle door panel (2) and the second mounting plane (5 b) when the inner door panel (3) is mounted.

11. The door body structure according to claim 9, wherein said mounting bracket (6) has a cover-like shape and is covered on the upper end portion of each of said fixing covers (5).

12. The door body structure according to claim 11, wherein the handle (4) extending left and right is provided at an upper end of an outer surface of the outer door panel (1), mounting holes (63) are respectively formed at left and right ends of the mounting bracket (6), a fastening member (10) is respectively inserted into each mounting hole (63), and each fastening member (10) is respectively inserted through the outer door panel (1) and fixed to a corresponding end of the handle (4).

13. The door body structure according to any one of claims 2 to 5, wherein the locking catches (71) of each locking structure respectively have a certain elasticity, the opening width of each locking catch (71) decreases from inside to outside, and the thickness of each locking block (82) is larger than the minimum width of the opening of the corresponding locking catch (71).

14. A household appliance having a door structure according to any one of claims 1 to 13.

15. The household appliance of claim 14, wherein the household appliance is one of a steam box, an oven, a steam oven, a microwave oven, a sterilizer, a washer, or an integral combination of at least two thereof.

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