CN114856345A

CN114856345A - Household electrical appliance

Info

Publication number: CN114856345A
Application number: CN202210449667.4A
Authority: CN
Inventors: 林益波; 朱灯光; 王栋; 顾洪良; 叶芳达; 钟海
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2022-08-05
Anticipated expiration: 2042-04-26
Also published as: CN114856345B

Abstract

The invention relates to a household appliance, which comprises a box body; the door body can be rotatably arranged at the opening of the accommodating cavity to open or close the opening; the connecting assembly is arranged on one of two first side edges of the door body, which are crossed with the rotating axis of the door body, and comprises a first connecting rod, and the first end of the connecting assembly is rotatably connected with the first side edge of the door body; the first end, which is closer to the rotating position of the door body, of the second connecting rod is rotatably connected with the corresponding position of the box body, and the second end, which is farther from the rotating position of the door body, of the second connecting rod is rotatably connected with the first connecting rod; the third connecting rod, the first end that rotates the nearer department apart from the door body rotates is connected with the corresponding position rotation of box, and the second end far away from the door body rotation department rotates with first connecting rod to be connected, and the second end of third connecting rod is arranged to be close to or keep away from the box and then drives first connecting rod and the synchronous correspondence of door body and be close to or keep away from the box. The clearance between the door body and the box body can be increased, and the clearance can be conveniently cleaned.

Description

Household electrical appliance

Technical Field

The invention belongs to the field of household appliances, and particularly relates to a household appliance with a door body.

Background

In the existing household appliances, such as steam boxes, steam ovens, cleaning machines, etc., each comprises a box body with a functional inner cavity and a door body which is arranged at an opening of the box body and can open or close the opening.

Present cleaning machine, like chinese utility model patent "a the articulated mechanism and install cleaning machine of this hinge structure", its patent number is ZL201821875668.0 (the grant bulletin number is CN209637489U) discloses an articulated mechanism including fixing the hinge seat on the body and fixing the hinge on the door body, rotate through hinge pin axle between hinge and the hinge seat and be connected be provided with first slot on the hinge, hinge pin axle is installed in the first slot one side an organic whole of first slot is provided with the block portion that can bend, block portion is in first slot with hinge pin axle restriction after bending.

Above-mentioned hinge structure has realized the connection of a body and body (box), but in long-term use, can pile up a lot of dust and spot between a body and the body, because the clearance is less, hardly clears up, breeds the bacterium easily and influences healthyly. In addition, under the condition of closing the door, a door lock needs to be additionally arranged to lock the door body, so that on one hand, the complexity of the structure is increased, a control system required for controlling the door lock to be opened or closed is increased, and the cost is increased; on the other hand, the occupation of the space of the containing cavity is increased.

Therefore, further improvements to existing household appliances are needed.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a household appliance, which can increase the gap between the door body and the cabinet body when the door needs to be dried or opened, so as to achieve the purpose of convenient cleaning, in view of the current situation of the prior art.

The second technical problem to be solved by the invention is to provide a household appliance which can realize the locking of a door body when the door is closed without a door lock.

The third technical problem to be solved by the invention is to provide a household appliance which can automatically guide the water in the gap in the opening process of the door body.

The technical scheme adopted by the invention for solving the first technical problem is as follows: a household appliance comprising:

the box body is internally provided with an open cavity;

the door body is rotatably arranged at the opening of the accommodating cavity to open or close the opening;

the connecting assembly is used for realizing the rotary connection between the door body and the box body;

it is characterized in that the connecting component is arranged on one of two first side edges of the door body crossed with the rotation axis of the door body, and comprises:

the first connecting rod extends along the length direction of the first side edge of the door body, and the first end of the first connecting rod is rotatably connected with the first side edge of the door body;

the second connecting rod is arranged at a position far away from the rotating position of the door body and is arranged along the length direction of the first connecting rod, the first end of the second connecting rod, which is close to the rotating position of the door body, is rotatably connected with the corresponding position of the box body, and the second end of the second connecting rod, which is far away from the rotating position of the door body, is rotatably connected with the first connecting rod; and

the third connecting rod is arranged at a position close to the rotating position of the door body, the extending direction of the third connecting rod is consistent with the extending direction of the second connecting rod, the first end, close to the rotating position of the door body, of the third connecting rod is rotatably connected with the corresponding position of the box body, the second end, far away from the rotating position of the door body, of the third connecting rod is rotatably connected with the first connecting rod, and the second end of the third connecting rod is arranged to be close to or far away from the box body so as to drive the first connecting rod and the door body to be close to or far away from the box body synchronously and correspondingly.

So, when needs are opened the door, the extension is in first state, and at this moment, first connecting rod and the door body can be simultaneously towards keeping away from the motion of box direction, have increased the clearance between the door body and the box then to the convenience is cleared up in the clearance.

The technical scheme adopted by the invention for solving the second technical problem is as follows: the first side edge of the door body is provided with a convex part at a position far away from the rotating position of the door body, the extending direction of the convex part is consistent with the extending direction of the rotating axis of the door body, the second end of the first connecting rod is provided with a groove for accommodating the convex part at a position corresponding to the convex part, the end part of the second end of the second connecting rod is provided with an extending part extending along the length direction of the second connecting rod, and the extending part is in a first state of limiting the convex part to move towards the direction far away from the box body and separate from the groove when the first connecting rod moves towards the box body to the door closing state.

Preferably, in a state where the first link is moving in a direction away from the box, the extension portion of the second link is in a second state where the protrusion is disengaged from the groove. Therefore, when the door is opened, the door body can rotate relative to the first connecting rod, and therefore the object to be cleaned can be conveniently taken and placed.

In order to realize that the first connecting rod moves towards the direction close to or far away from the box body, the connecting assembly further comprises a fourth connecting rod, the fourth connecting rod is arranged along the arrangement direction of the door body and the box body, the first end of the fourth connecting rod and the first end of the third connecting rod are coaxially arranged and are rotatably connected with the box body through a connecting shaft, the second end of the fourth connecting rod is arranged to rotate relative to the box body, and the extension directions of the rotation axes at the two ends of the fourth connecting rod are consistent. Therefore, the first connecting rod moves close to or away from the box body under the matching of the fourth connecting rod and the third connecting rod.

The fourth connecting rod is driven to move in various manners, and may be driven by a driving mechanism actively or pushed manually, but from the viewpoint of operational reliability and convenient operation, the fourth connecting rod further preferably includes a driving mechanism, and a power output end of the driving mechanism is connected to a second end of the fourth connecting rod in a driving manner, so as to drive the second end of the fourth connecting rod to rotate towards the convex portion, so that the extending portion of the second connecting rod is in a first state of rotating towards a direction away from the box body to enable the convex portion to be separated from the groove, or drive the second end of the fourth connecting rod to rotate towards the direction away from the convex portion, so that the extending portion of the second connecting rod is in a second state of rotating towards the box body to limit the convex portion to be separated from the groove.

The driving mechanism can directly act on the fourth connecting rod or indirectly act on the fourth connecting rod, but preferably, the box body is provided with a rotating shaft which is consistent with the extending direction of the rotating axis of the door body, the rotating shaft and the rotating axis of the door body are arranged along the arrangement direction of the box body and the door body, the second end of the fourth connecting rod is rotatably connected with the rotating shaft, the driving mechanism is rotatably arranged on the corresponding wall surface of the box body, and the power output end of the driving mechanism is in driving connection with the rotating shaft.

The driving mechanism has various structural forms, and can adopt a form of a push rod motor and a form of an air cylinder, but preferably, the driving mechanism is a push rod motor which is positioned outside the box body, a push rod of the push rod motor extends along the arrangement direction of the box body and the door body, the free end of the push rod is connected with the rotating shaft, and the other end of the push rod motor, which is far away from the free end of the push rod, is hinged on the corresponding wall surface of the box body.

In order to realize the movement of the door body relative to the second connecting rod, when the second connecting rod is in the first state, one side of the door body, which is far away from the rotating position of the door body, can rotate relative to the first connecting rod and close to or far away from the box body, and then is in the state of opening or closing the opening.

The opening can be positioned at the top of the box body, can also be positioned at the front side of the box body, and can also be positioned at other positions of the box body, but preferably, the opening is positioned at the top of the box body, an extension wall is formed on the periphery of the opening of the box body in a laterally extending mode, a circular wall is formed on the periphery of the extension wall in an upward extending mode, the first connecting rod extends along the front-back direction, the circular wall is positioned between the fourth connecting rod and the third connecting rod, the second connecting rod and the third connecting rod are arranged along the front-back direction, and the second connecting rod and the third connecting rod are surrounded by the circular wall.

In order to prevent water accumulation on the rear side of the opening of the box body, an extending wall is formed on the lateral extension of the opening of the box body, the extending wall faces the surface of the door body and is provided with a water guide plate for sweeping water into the accommodating cavity, the water guide plate is arranged close to the rotating shaft and extends along the length direction of the rotating shaft, the first side of the water guide plate close to the convex part is rotatably arranged on the extending wall, the rotating axis of the water guide plate extends along the left-right direction, the second side of the water guide plate is overturned along the movement direction of the first connecting rod, and the movement directions of the first side and the second side are consistent.

The technical scheme adopted by the invention for solving the third technical problem is as follows: still including with the connecting piece that the axis of rotation homonymy was arranged, the connecting piece is equipped with the movable rod that drives the upset of the second side of water deflector, extend the wall and offer the confession the perforation that the movable rod wore out, the upper end of movable rod with the second side of water deflector is connected, the connecting piece is seted up along the direction of arranging of third connecting rod and second connecting rod gradually to keeping away from the crooked arc hole of a body direction, the axis of rotation is worn to establish just move along the length direction of this arc hole in the arc hole.

In order to reliably realize the up-and-down turning of the rear side of the water guide plate, two connecting pieces are arranged at intervals along the length direction of the water guide plate.

In order to reliably realize the rotary connection of the door body and the box body, the connecting assemblies are two groups and are arranged at intervals along the extending direction of the rotary axis of the door body.

The household appliance may be a cooking appliance having a steaming function and a washing machine may be used, but preferably, the household appliance is a washing machine.

Compared with the prior art, the invention has the advantages that: this domestic appliance's first connecting rod rotates with a body and is connected, and the second connecting rod rotates with the box to be connected, and when the box was kept away from to first connecting rod, the box was kept away from together to the drive door body to the clearance between the increase door body and the box, the clearance between the convenient door body and the box is cleared up. Under the state of closing the door, the convex part of the door body is limited by the extension part of the second connecting rod to be separated from the groove of the first connecting rod, the door body is locked on the box body at the moment, the automatic door locking under the state of closing the door can be realized without arranging a top door motor and a door lock, more space can be saved for the accommodating cavity, and the capacity of the accommodating cavity is increased.

Drawings

Fig. 1 is a partial schematic structural view of the cleaning machine of the present embodiment in a door closing state;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of the structure of FIG. 1 with the box removed;

FIG. 4 is a schematic view of the structure of FIG. 1 in a door-open state;

FIG. 5 is a cross-sectional view of FIG. 4;

FIG. 6 is a schematic view of the structure of FIG. 4 with the box removed;

FIG. 7 is a schematic structural view of FIG. 1 in a drying state;

fig. 8 is a cross-sectional view of fig. 7.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 8, the household appliance of the present embodiment is a washing machine for washing dishes or fruits and vegetables. The cleaning machine comprises a box body 1, a door body 2, a spraying mechanism, a drying mechanism, a driving mechanism, two groups of connecting assemblies 3, a rotating shaft 5, a water guide plate 7 and a connecting piece 8. The box body 1 has a cavity 10 with an opening 101 therein, and the opening 101 is located at the top of the cavity 10. An extension wall 102 is formed laterally and outwardly on the periphery of the opening 101 of the box body 1, and a circumferential wall 103 is formed upwardly on the periphery of the extension wall 102. The door 2 is rotatably provided at a rear side of the opening 101 of the cavity 10 to open or close the opening 101. In a door closing state (i.e. a state that the door body 2 blocks the opening 101), the door body 2 is surrounded by the annular wall 103, and the top edge of the annular wall 103 is flush with the top surface of the door body 2. The spraying mechanism (not shown) is disposed on the inner bottom wall of the cleaning machine, the drying mechanism in this embodiment is not shown, and the structure form and arrangement manner of the existing cleaning machine are adopted, which will not be described in detail in this embodiment.

As shown in fig. 1 to 8, a rotation shaft 5 is provided on the rear side of the casing 1, and the rotation shaft 5 extends in the left-right direction in the same direction as the extending direction of the rotation axis of the door 2. And, the rotation shaft 5 is located below the rotation axis of the door body 2, that is, the rotation shaft 5 and the rotation axis of the door body 2 are arranged along the arrangement direction of the cabinet 1 and the door body 2.

As shown in fig. 1 to 8, the two connecting assemblies 3 are arranged at intervals along the length direction of the rotating shaft 5 at the left and right ends of the rotating shaft 5, and are used for rotatably connecting the door body 2 and the cabinet 1. The front sides of the left and right first sides 2a of the door body 2 are provided with protrusions 21 extending laterally outwards, the protrusions 21 are disposed at positions far away from the rotation position of the door body 2, the protrusions 21 extend along the left and right direction, and the two first sides 2a in this embodiment are the left side and the right side, respectively. The two sets of coupling assemblies 3 have the same configuration, and the coupling assembly 3 on the left side will be described as an example. The connecting assembly 3 of the present embodiment includes a first link 31, a second link 32, a fourth link 33, and a third link 34. The first link 31, the second link 32 and the third link 34 are all surrounded by the annular wall 103 (i.e. located in the space surrounded by the annular wall 103), and the fourth link 33 is located on the peripheral side of the annular wall 103, i.e. the annular wall 103 is located between the fourth link 33 and the third link 34, so that the first link 31, the second link 32 and the third link 34 in the connecting assembly 3 are hidden between the door body 2 and the annular wall 103 in the door closing state.

The first link 31 is located above the extension wall 102 and is arranged to be movable up and down (i.e., toward or away from the housing 1). The first link 31 extends in the front-rear direction, i.e., in the longitudinal direction of the left side of the door body 2 where the projection 21 is located in the closed state, and is disposed on the same side as the projection 21. The first end (i.e., the rear end) of the first link 31 is rotatably connected to the door body 2 by a mounting shaft 22, the mounting shaft 22 extends in the left-right direction and is fixed to the door body 2, the axis of the mounting shaft 22 is the rotation axis of the door body, and the mounting shafts 22 of the two sets of connecting assemblies are coaxially arranged. The second end (i.e. the front end) of the first link 31 is provided with a groove 311 at a position corresponding to the protrusion 21, which is recessed (downward) in a direction away from the door body 2 so that the protrusion 21 is located therein. The second link 32 is arranged along the length direction of the first link 31, i.e., along the front-rear direction. A first end of the second link 32 adjacent to the rotation position of the door 2 (i.e., a rear end of the second link 32 closer to the rotation position of the door 2) is rotatably connected to the corresponding position of the annular wall 103 of the box 1 via a first shaft 322, a second end of the second link 32 away from the rotation position of the door 2 (i.e., a front end of the second link 32 farther from the rotation position of the door 2) is rotatably connected to the first link 31, and the front end of the second link 32 has an extending portion 321 that limits the movement (upward movement) of the protrusion 21 in the direction away from the box 1 and exits the groove 311 when the door is closed. The fourth link 33 is disposed along the arrangement direction of the door 2 and the cabinet 1 (i.e., along the up-down direction, i.e., both ends of the fourth link 33 are upper and lower ends, respectively), and is located at the rear side of the second link 32. A first end (i.e., an upper end) of the aforementioned fourth link 33 is rotatably provided at a corresponding position of the case 1, a second end (i.e., a lower end) of the fourth link 33 is rotatably connected with a left end of the rotating shaft 5, and a lower end of the fourth link 33 is arranged to be rotatable in a length direction of the first link 31 (i.e., rotatable in a front-rear direction); the third link 34 is located between the first link 31 and the fourth link 33 along the direction in which the rotation axis of the door body 2 extends, and the third link 34 is arranged along the length direction of the first link 31 (i.e., arranged along the front-rear direction, and the two ends of the third link 34 are respectively the front end and the rear end). One end (front end) of the third link 34 away from the rotation axis of the door body 2 is rotatably connected to the first link 31, the other end (rear end) of the third link 34 adjacent to the rotation axis of the door body 2 is rotatably connected to the first end of the fourth link 33 through a connecting shaft 4, and the connecting shaft 4 is mounted on the annular wall 103 and extends along the length direction of the rotating shaft 5. The connecting shafts 4 of the two groups of connecting components are coaxially arranged.

The driving mechanism is a push rod motor 6 located behind the cabinet 1 and arranged vertically (i.e. along the arrangement direction of the cabinet and the door body). The push rod motor 6 has a push rod 61 extending in the up-down direction, and the push rod motor in this embodiment adopts the structure and the working principle in the prior art, which will not be described in detail in this embodiment. The lower end of the push rod motor 6 is hinged on the rear wall surface of the box body 1, the free end (upper end) of the push rod 61 of the push rod motor 6 is connected with the position near the middle of the rotating shaft 5 through a bracket, so that when the push rod 61 of the push rod motor 6 moves downwards, the lower end of the fourth connecting rod 33 is driven to rotate towards the convex part 21 (forward), at the moment, the first connecting rod 31 moves upwards, and then the extending part 321 of the second connecting rod 32 is enabled to be in a first state that the convex part 21 can be separated from the groove 311 by rotating towards the direction far away from the box body 1 (upward rotation); thus, the front side of the door body 2 can rotate upward relative to the first link 31 to open the opening 101, or rotate downward to close the opening 101. Alternatively, when the push rod 61 of the push rod motor 6 moves upward, the second end (i.e., the lower end) of the fourth link 33 is driven to rotate in a direction away from the protrusion 21 (i.e., backward), and at this time, the first link 31 moves downward, so that the extension portion 321 of the second link 32 is in a second state of rotating in a direction toward the box 1 (i.e., downward) to limit the protrusion 21 from coming out of the groove 311.

The water guide plate 7 for sweeping water into the cavity 10 is disposed on the rear side of the upper surface of the extension wall 102, the water guide plate 7 extends in the left-right direction, the water guide plate 7 is rotatably disposed on the extension wall 102 adjacent to the first side (front side) of the protrusion 21, and the rotation axis of the water guide plate 7 extends in the left-right direction, in this embodiment, the top surface of the water guide plate 7 has an inclined surface 70 gradually inclined downward from the rear to the front, and the inclined surface 70 is located at the front of the top surface of the water guide plate 7. The second side (i.e., the rear side) of the water guide plate 7 opposite to the first side is turned along the moving direction of the first link 31, and the moving directions of the two sides are the same. In order to realize the rotation of the rear side of the water deflector 7, the left side and the right side of the water deflector 7 are both provided with the connecting pieces 8, the two connecting pieces 8 are arranged at intervals along the left-right direction of the length direction of the water deflector 7, the structural forms of the two connecting pieces 8 are the same, and the following description takes one of the connecting pieces 8 as an example. The upper portion of the above-mentioned connecting piece is equipped with the movable rod 81 that drives the rear side upset of water deflector 7, and the movable rod 81 extends along the upper-lower direction, and the perforation that the upper end that supplies the movable rod 81 to wear out is seted up to aforementioned extension wall 102, and the upper end of movable rod 81 is connected with the rear side of water deflector 7, and connecting piece 8 is seted up along the fore-and-aft direction arc hole 82 that gradually bends down (this arc hole 82 is gradually to keeping away from the bending of door body 2 direction along the direction of arranging of third connecting rod 34 and second connecting rod 32 promptly). When the push rod 61 of the push rod motor 6 moves up and down, the push rod moves back and forth along the length direction of the arc-shaped hole 82, so that the movable rod 81 slides up and down, the rear side of the water guide plate 7 rotates up and down, and the water guide plate 7 is in an inclined state or a horizontal state. When the first link 31 moves upward, the rear side of the water guide panel 7 rotates upward, and when the first link 31 moves downward, the rear side of the water guide panel 7 rotates downward, that is, the movement directions of the first link 31 and the rear side of the water guide panel 7 coincide. In the door closing state, the water guide plate 7 is hidden in the gap between the door body and the box body, and the appearance is not influenced.

The working process of the cleaning machine is as follows:

as shown in fig. 7 and 8, during drying, the push rod 61 of the push rod motor 6 moves downward, the fourth link 33 rotates counterclockwise, the third link 34 rotates counterclockwise synchronously, the first link 31 is pushed upward to move the first link 31 upward, because the door 2 is connected with the first link 31 through the cooperation of the protrusion 21, the groove 311 and the extension 321, at this time, the door 2 moves upward along with the first link 31 until reaching a certain height, and then stops, at this time, the second link 32 rotates counterclockwise around the first shaft 322 until the extension 321 is located at the rear side of the top opening of the groove 311, at this time, the protrusion 21 can move upward from the groove 311, and a gap is left between the door 2 and the extension 101 of the box 1, so that moisture can be rapidly discharged from the cavity 10, and the drying effect in the cavity 10 is improved.

When the door needs to be opened, a user can pull the front side of the door body 2 to move upwards, at the moment, the convex part 21 can leave from the groove 311, the door body can rotate upwards relative to the first connecting rod 31 to be in an opening state, and at the moment, the user can take tableware from the container 10. Because the whole door body floats, if the door body 2 is covered by full glass, when the normal door body does not float, the rear glass of the door body 2 can touch the containing cavity 10, and the glass has the risk of damage. After the door body 2 floats, the door body 2 is in a suspension state, glass cannot be contacted with any object after the door body is opened, and the glass cannot be damaged. Meanwhile, as the door body 2 floats upwards, a cleaning dead angle does not exist between the rear side of the door body 2 and the accommodating cavity 10, and the cleaning is convenient. As shown in fig. 4 to 6, when the door is opened, water on the door body flows onto the water guide plate 7, and the rear side of the water guide plate 7 rotates upward, so that the water guide plate 7 is integrally inclined downward from back to front, and at this time, water flowing down from the inner surface of the door body 2 falls onto the water guide plate 7 and flows into the accommodating cavity 10 under the flow guide effect of the water guide plate 7, thereby preventing water from accumulating on the rear side of the extension wall. According to the embodiment, the door body 2 can move upwards (in a drying state) periodically according to the requirement of tableware storage, so that the dryness in the cavity 10 is ensured, and the tableware storage effect is ensured.

If the user wants to store the tableware in the accommodating cavity 10 continuously, in order to prevent the dust and the like from entering the accommodating cavity 10 and polluting the tableware, after the drying is finished, the push rod 61 of the push rod motor 6 moves upwards to drive the fourth connecting rod and the third connecting rod clockwise, the first connecting rod and the door body 2 move downwards until the door body returns to the door closing state, in the process, the second connecting rod 32 moves clockwise, at the moment, the extending part 321 is located above the top opening of the groove 311, the extending part 321 blocks the convex part 21 from moving upwards out of the top opening of the groove 311, and the door body 2 is prevented from moving upwards relative to the box body 1, namely, the door body 2 is in the locked state and cannot be opened. As shown in fig. 1 to 3, in the door closed state, the rear side of the water guide panel 7 is rotated downward until the door is closed, and the bottom surface of the water guide panel 7 is changed from the inclined state to the horizontal state.

Above-mentioned cleaning machine can effectively improve the stoving effect, need not to set up top door motor and lock, can save more spaces and give appearance chamber 10, increases and hold 10 capacities in chamber.

Directional terms such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", and "vertical" are used in the description and claims of the present invention to describe various example structural portions and elements of the present invention, but are used herein for convenience of description only and are determined based on example orientations shown in the accompanying drawings. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity.

Claims

1. A household appliance comprising:

the box body (1) is internally provided with a cavity (10) with an opening (101);

the door body (2) is rotatably arranged at the opening (101) of the accommodating cavity (10) to open or close the opening (101);

the connecting assembly (3) is used for realizing the rotary connection of the door body (2) and the box body (1);

it is characterized in that the connecting component (3) is arranged on one of two first side edges (2a) of the door body (2) which are crossed with the rotation axis of the door body, and comprises:

a first connecting rod (31) extending along the length direction of the first side edge (2a) of the door body (2), and the first end of the first connecting rod is rotatably connected with the first side edge (2a) of the door body (2);

the second connecting rod (32) is arranged at a position far away from the rotating position of the door body (2) and arranged along the length direction of the first connecting rod (31), the first end, close to the rotating position of the door body (2), of the second connecting rod is rotatably connected with the corresponding position of the box body (1), and the second end, far away from the rotating position of the door body (2), of the second connecting rod is rotatably connected with the first connecting rod (31); and

the third connecting rod (34) is arranged at a position close to the rotating position of the door body (2), the extending direction of the third connecting rod is consistent with the extending direction of the second connecting rod (32), the first end, close to the rotating position of the door body (2), of the third connecting rod is rotatably connected with the corresponding position of the box body (1), the second end, far away from the rotating position of the door body (2), of the third connecting rod is rotatably connected with the first connecting rod (31), and the second end of the third connecting rod (34) is arranged to be close to or far away from the box body (1) so as to drive the first connecting rod (31) and the door body (2) to be close to or far away from the box body (1) synchronously and correspondingly.

2. The household appliance according to claim 1, wherein: the first side edge (2a) of the door body (2) is provided with a convex part (21) at a position far away from the rotating position of the door body (2), the extending direction of the convex part (21) is consistent with the extending direction of the rotating axis of the door body (2), the second end of the first connecting rod (31) is provided with a groove (311) corresponding to the convex part (21) and used for accommodating the convex part (21), the end part of the second end of the second connecting rod (32) is provided with an extending part (321) extending along the length direction of the second connecting rod, and when the first connecting rod (31) moves towards the direction close to the box body (1) to the door closing state, the extending part (321) is in a first state of limiting the convex part (21) to move towards the direction far away from the box body (1) and to be separated from the groove (311).

3. The household appliance according to claim 2, wherein: when the first link (31) is in a state of moving away from the box body (1), the extension part (321) of the second link (32) is in a second state which can enable the convex part (21) to be separated from the groove (311).

4. The household appliance according to claim 1, wherein: the connecting assembly (3) further comprises a fourth connecting rod (33), the fourth connecting rod (33) is arranged along the arrangement direction of the door body (2) and the box body (1), the first end of the fourth connecting rod (33) is coaxially arranged with the first end of the third connecting rod (32) and is rotatably connected with the box body through a connecting shaft (4), the second end of the fourth connecting rod (33) is arranged to rotate relative to the box body (1), and the extension directions of the rotation axes at the two ends of the fourth connecting rod (33) are consistent.

5. The household appliance according to claim 4, wherein: the power output end of the driving mechanism is in driving connection with the second end of the fourth connecting rod (33), so that the second end of the fourth connecting rod (33) is driven to rotate towards the direction of the convex portion (21) to enable the extending portion of the second connecting rod (32) to rotate towards the direction away from the box body (1) to reach the first state, or the second end of the fourth connecting rod (33) is driven to rotate towards the direction away from the convex portion (21) to enable the extending portion of the second connecting rod (32) to rotate towards the direction of the box body (1) to reach the second state.

6. The household appliance according to claim 5, wherein: the box (1) is provided with axis of rotation (5) unanimous with the extending direction of the axis of rotation of the door body (2), axis of rotation (5) and the axis of rotation of the door body (2) arrange along the direction of arranging of box (1) and the door body (2), the second end of fourth connecting rod (33) with axis of rotation (5) rotate and are connected, actuating mechanism sets up with rotating on the corresponding wall of box (1), and this actuating mechanism's power take off with rotation axis drive is connected.

7. The household appliance according to claim 6, wherein: the driving mechanism is a push rod motor (6) located outside the box body (1), a push rod (61) of the push rod motor (6) extends along the arrangement direction of the box body (1) and the door body (2), the free end of the push rod (61) is connected with the rotating shaft (5), and the other end, away from the free end of the push rod (61), of the push rod motor (6) is hinged to the corresponding wall surface of the box body (1).

8. The household appliance according to claim 4, wherein: when the second connecting rod (32) is in the first state, the first side of the door body (2) far away from the rotating position can be close to or far away from the box body (1) relative to the first connecting rod (31) and then is in a state of opening or closing the opening (101).

9. The household appliance according to claim 4, wherein: the opening (101) is located at the top of the box body (1), an extension wall (102) is formed by extending the periphery of the opening (101) of the box body (1) outwards along the lateral direction, a ring wall (103) is formed by extending the periphery of the extension wall (102) upwards, the first connecting rod (31) extends along the front-back direction, the ring wall (103) is located between the fourth connecting rod (33) and the third connecting rod (34), the second connecting rod (32) and the third connecting rod (34) are both arranged along the front-back direction, and the second connecting rod (32) and the third connecting rod (34) are both surrounded by the ring wall (103).

10. The household appliance according to claim 6, wherein: the periphery of an opening (101) of the box body (1) is laterally and outwardly provided with an extending wall (102), the surface, facing the door body, of the extending wall (102) is provided with a water guide plate (7) for sweeping water into the accommodating cavity (10), the water guide plate (7) is arranged close to the rotating shaft (5) and extends along the length direction of the rotating shaft (5), the first side, close to the convex part (21), of the water guide plate (7) is rotatably arranged on the extending wall (102), the rotating axis of the water guide plate (7) extends along the left-right direction, the second side of the water guide plate (7) is overturned along the movement direction of the first connecting rod (31), and the movement directions of the water guide plate and the water guide plate are consistent.

11. The household appliance according to claim 10, wherein: still including with connecting piece (8) that axis of rotation (5) homonymy was arranged, connecting piece (8) are equipped with movable rod (81) that drives the upset of the second side of water deflector (7), extend wall (102) and offer the confession the perforation that movable rod (81) were worn out, the upper end of movable rod (81) with the second side of water deflector (7) is connected, connecting piece (8) are seted up along third connecting rod (34) and second connecting rod (32) arrange the direction and are gradually to keeping away from arc hole (82) that door body (2) direction is crooked, axis of rotation (5) are worn to establish in arc hole (82) and along the length direction motion of this arc hole (82).

12. The household appliance according to claim 11, wherein: the number of the connecting pieces (8) is two, and the connecting pieces are arranged at intervals along the length direction of the water guide plate (7).

13. The household appliance according to claim 1, wherein: the two groups of the connecting components (3) are arranged at intervals along the extending direction of the rotating axis of the door body (2).

14. A household appliance as claimed in any one of claims 1 to 13, characterized in that: the household appliance is a cleaning machine.