Home appliances

Abstract

The present invention provides a household appliance, and relates to the technical field of kitchen appliances. The household appliance includes a door assembly, a transmission assembly, and a box assembly; the transmission assembly connects the door assembly and the box assembly, and the transmission assembly includes a first hinge point and a second hinge point connected to the door assembly, and the door assembly is rotatably connected to the box assembly through the transmission assembly. When the door assembly rotates in a direction away from the box assembly, the transmission assembly drives the door assembly to move downward through the first hinge point and the second hinge point. When the door assembly rotates to an open position, the door assembly can move downward to a suitable height, which can increase the distance between the door assembly and the inner liner, prevent the door assembly from squeezing the wiring harness, and ensure that the door assembly is opened smoothly. And after replacing door assemblies of different thicknesses, since the distance between the door assembly and the inner liner increases, it can also prevent the phenomenon of the door assembly squeezing the wiring harness due to the change in the thickness of the door assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, in particular to a household appliance. Background Art

[0002] A dishwasher is a device used to automatically wash dishes such as bowls, chopsticks and plates. The door is an important part of the dishwasher, and users have high requirements for the smooth opening and closing of the door.

[0003] In the prior art, a wiring harness is provided below the inner liner, and one end of the wiring harness extends into the interior of the door body. When the door body is in an open state, the wiring harness is located between the inner liner and the door body.

[0004] However, the distance between the door body and the inner tank is small, and the wiring harness is easily squeezed when the door body is opened, causing the door body to be unable to open smoothly. Summary of the invention

[0005] The object of the present invention is to provide a household appliance to solve the technical problem in the prior art that a wiring harness is easily squeezed when a door is opened.

[0006] The household appliance provided by the present invention comprises a door assembly, a transmission assembly and a box assembly;

[0007] The transmission assembly connects the door assembly and the box assembly, and the transmission assembly includes a first hinge point and a second hinge point connected to the door assembly. The door assembly is rotatably connected to the box assembly through the transmission assembly.

[0008] When the door assembly rotates in a direction away from the box assembly, the transmission assembly drives the door assembly to move downward via the first hinge point and the second hinge point.

[0009] Further, the transmission assembly includes a first connecting rod and a second connecting rod, and the door body assembly includes a door body and a connecting member;

[0010] The connecting piece is fixedly connected to the door body;

[0011] The first connecting rod is hinged to the connecting member to form the first hinge point, and the second connecting rod is hinged to the connecting member to form the second hinge point.

[0012] Further, one end of the first connecting rod is hinged to the box assembly, and the other end of the first connecting rod is hinged to the connecting member; one end of the second connecting rod is hinged to the box assembly, and the other end of the second connecting rod is hinged to the connecting member;

[0013] The first connecting rod and the second connecting rod are both hinged between the connecting member and the box assembly to form a four-bar linkage.

[0014] Further, the second connecting rod and the box assembly form a third hinge point;

[0015] The distance between the first hinge point and the second hinge point is L BC , the distance between the third hinge point and the second hinge point is L CD , the distance between the first hinge point and the third hinge point is L BD ; L BC 2 +L CD 2 <L BD 2 ;

[0016] Along the horizontal direction, the second hinge point is located between the first hinge point and the third hinge point.

[0017] Furthermore, the transmission assembly further includes a third connecting rod;

[0018] One end of the first connecting rod is hinged to one end of the third connecting rod, one end of the second connecting rod is hinged to the other end of the third connecting rod, and the third connecting rod is fixedly connected to the box assembly.

[0019] Furthermore, the transmission assembly is provided with a movable pulley, and the movable pulley can rotate synchronously with the door assembly;

[0020] The household appliance further comprises a tension spring and a pull cord;

[0021] One end of the tension spring is used to be connected to the base, the other end of the tension spring is connected to one end of the pull rope, and the other end of the pull rope is used to be connected to the base; the pull rope is passed around the movable pulley.

[0022] Further, the transmission assembly includes a first connecting rod and a second connecting rod, and the door body assembly includes a door body and a connecting member;

[0023] The connecting piece is fixedly connected to the door body;

[0024] The first connecting rod is hinged to the connecting member to form the first hinge point, and the second connecting rod is hinged to the connecting member to form the second hinge point;

[0025] The movable pulley is arranged on the connecting member.

[0026] Further, the connecting member includes a connecting portion and a protruding portion connected to each other;

[0027] The connecting portion is fixedly connected to the door body; the first connecting rod and the second connecting rod are respectively hinged to the connecting portion;

[0028] The movable pulley is arranged on the protruding portion, and the outer contour of the protruding portion is a triangle.

[0029] Further, a first fixed pulley assembly is provided on one side of the movable pulley, and a second fixed pulley assembly is provided on the other side of the movable pulley;

[0030] The pull rope passes around the first fixed pulley assembly, the movable pulley and the second fixed pulley assembly in sequence.

[0031] Further, the first fixed pulley assembly includes a first fixed pulley, and the first fixed pulley is arranged below the movable pulley;

[0032] The second fixed pulley assembly comprises a second fixed pulley and a third fixed pulley; in the horizontal direction, the second fixed pulley and the third fixed pulley are sequentially arranged on one side of the movable pulley, and the second fixed pulley and the third fixed pulley are arranged at different heights;

[0033] The pull rope passes around the first fixed pulley, the movable pulley, the second fixed pulley and the third fixed pulley in sequence.

[0034] The household appliance provided by the present invention comprises a door assembly, a transmission assembly and a box assembly; the transmission assembly connects the door assembly and the box assembly, the transmission assembly comprises a first hinge point and a second hinge point connected to the door assembly, the door assembly is rotatably connected to the box assembly through the transmission assembly, when the door assembly rotates in a direction away from the box assembly, the transmission assembly drives the door assembly to move downward through the first hinge point and the second hinge point. The transmission assembly drives the door assembly to rotate in a direction away from the box assembly to realize the opening of the door assembly, when the door assembly is in an open position, the outer end surface of the door assembly is horizontally arranged. During the opening process of the door assembly, the transmission assembly drives the door assembly to rotate in a direction away from the box assembly, and the door assembly moves downward at the same time, when the door assembly rotates to the open position, the door assembly can move downward to a suitable height, which can increase the distance between the door assembly and the inner tank, prevent the door assembly from squeezing the wiring harness, and ensure the smooth opening of the door assembly. Moreover, after replacing door body assemblies of different thicknesses, since the distance between the door body assembly and the inner liner increases, it can also prevent the phenomenon of the door body assembly squeezing the wiring harness due to the change in the thickness of the door body assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 is a schematic diagram of the structure of a household appliance provided by an embodiment of the present invention;

[0037] Figure 2 is a schematic structural diagram of a transmission component in a household appliance provided by an embodiment of the present invention;

[0038] Figure 3 is a front view of a transmission component in a household appliance provided by an embodiment of the present invention;

[0039] Figure 4 is a diagram of a household appliance provided by an embodiment of the present invention, in which a door body rotates from a closed position to an open position;

[0040] Figure 5 is a state diagram of a household appliance provided by an embodiment of the present invention, in which the door is in a closed position;

[0041] Figure 6 is a state diagram of a household appliance door body rotated downward 30° from a closed position provided by an embodiment of the present invention;

[0042] Figure 7 is a state diagram of a household appliance provided by an embodiment of the present invention, in which the door body is rotated downward by 60° from a closed position;

[0043] Figure 8 This is a state diagram of a household appliance provided by an embodiment of the present invention, in which the door is in an open position.

[0044] Icons: 1-door assembly; 11-door body; 12-connecting piece; 121-connecting part; 122-extending part; 2-transmission assembly; 21-first connecting rod; 22-second connecting rod; 23-movable pulley; 24-third connecting rod; 25-fourth hinge point; 26-first hinge point; 27-second hinge point; 28-third hinge point; 3-box assembly; 4-base; 5-tension spring; 6-pull rope; 7-first fixed pulley; 8-second fixed pulley; 9-third fixed pulley. DETAILED DESCRIPTION

[0045] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] The present invention provides a household appliance. A plurality of embodiments are given below to describe the household appliance provided by the present invention in detail.

[0047] The household appliance provided in this embodiment, such as Figures 1 to 8 As shown, it includes a door body assembly 1, a transmission assembly 2 and a box assembly 3; the transmission assembly 2 connects the door body assembly 1 and the box assembly 3, the transmission assembly 2 includes a first hinge point 26 and a second hinge point 27 connected to the door body assembly 1, the door body assembly 1 is rotatably connected to the box assembly 3 through the transmission assembly 2, when the door body assembly 1 rotates in a direction away from the box assembly 3, the transmission assembly 2 drives the door body assembly 1 to move downward through the first hinge point 26 and the second hinge point 27.

[0048] The household appliance may be any suitable device such as a dishwasher, a steamer or an oven. In this embodiment, the household appliance is a dishwasher.

[0049] The door body assembly 1 is connected to the box body assembly 3 through the transmission assembly 2, and the transmission assembly 2 drives the door body assembly 1 to rotate in the direction close to the box body assembly 3 to achieve the closure of the door body assembly 1 on the box body assembly 3. When the door body assembly 1 is closed on the box body assembly 3 (the door body assembly 1 is in the closed position), the outer end face of the door body assembly 1 is vertically arranged.

[0050] The transmission assembly 2 drives the door assembly 1 to rotate in a direction away from the box assembly 3 to open the door assembly 1. When the door assembly 1 is in the open position, the outer end surface of the door assembly 1 is set horizontally. During the opening process of the door assembly 1, the transmission assembly 2 drives the door assembly 1 to rotate in a direction away from the box assembly 3, and the door assembly 1 moves down at the same time. When the door assembly 1 rotates to the open position, the door assembly 1 can move down to a suitable height, which can increase the distance between the door assembly 1 and the inner liner, prevent the door assembly 1 from squeezing the wire harness, and ensure that the door assembly 1 opens smoothly. And after replacing the door assembly 1 with different thicknesses, since the distance between the door assembly 1 and the inner liner increases, it can also prevent the phenomenon of the door assembly 1 squeezing the wire harness due to the change in the thickness of the door assembly 1.

[0051] It should be noted that "when the door body assembly 1 rotates to the open position, the door body assembly 1 can move down to a suitable height" means that if the door body 11 in the prior art rotates around the rotation axis to the open position, the position of the outer end surface of the door body 11 is the first position, in the household appliance of this embodiment, the transmission assembly 2 drives the door body assembly 1 to rotate in a direction away from the box assembly 3, and the door body assembly 1 moves down at the same time, and when the door body assembly 1 rotates to the open position, the position of the outer end surface of the door body 11 of the door body assembly 1 is the second position, and the first position is higher than the second position. In other words, compared with the door body 11 in the prior art, in the household appliance provided by this embodiment, the height of the door body 11 decreases when the door body 11 moves to the open position.

[0052] Among them, the door body assembly 1 may include a door body 11, and the transmission assembly 2 may be connected to the door body 11 to form a first hinge point 26 and a second hinge point 27; the door body assembly 1 may also include a door body and a connecting member 12, the connecting member 12 is fixedly connected to the door body 11, and the transmission assembly 2 may be connected to the connecting member 12 to form a first hinge point 26 and a second hinge point 27.

[0053] The transmission assembly 2 may include a connecting member, a sliding groove is provided on the connecting member, a first protrusion and a second protrusion are provided on the door body assembly 1, the first protrusion extends into the sliding groove, the first protrusion can slide along the sliding groove, and the first protrusion is hinged to the sliding groove to form a first hinge point, the second protrusion extends into the sliding groove, the second protrusion can slide along the sliding groove, and the second protrusion is hinged to the sliding groove to form a second hinge point.

[0054] Preferably, the transmission assembly 2 includes a first connecting rod 21 and a second connecting rod 22, and the door body assembly 1 includes a door body 11 and a connecting member 12; the connecting member 12 is fixedly connected to the door body 11; the first connecting rod 21 is hinged to the connecting member 12 to form a first hinge point 26, and the second connecting rod 22 is hinged to the connecting member 12 to form a second hinge point 27.

[0055] During the opening and closing process of the door body 11, the connecting member 12 drives the first hinge point 26 and the second hinge point 27 to rotate simultaneously, and synchronously drives the first connecting rod 21 and the second connecting rod 22 to rotate. When the door body assembly 1 rotates in a direction away from the box assembly 3, the transmission assembly 2 drives the door body assembly 1 to move downward through the first hinge point 26 and the second hinge point 27.

[0056] The first link 21 and the second link 22 may form a four-link mechanism to drive the door assembly 1 to move. The first link 21 and the second link 22 may also form a six-link mechanism or other multi-link mechanisms to drive the door assembly 1 to move.

[0057] Furthermore, one end of the first connecting rod 21 is hinged to the box assembly 3, and the other end of the first connecting rod 21 is hinged to the connecting member 12; one end of the second connecting rod 22 is hinged to the box assembly 3, and the other end of the second connecting rod 22 is hinged to the connecting member 12; the first connecting rod 21 and the second connecting rod 22 are both hinged between the connecting member 12 and the box assembly 3 to form a four-bar linkage.

[0058] Specifically, one end of the first connecting rod 21 is hinged to the box assembly 3 to form a fourth hinge point 25, and the other end of the first connecting rod 21 is hinged to the connecting member 12 to form a first hinge point 26; one end of the second connecting rod 22 is hinged to the box assembly 3 to form a third hinge point 28, and the other end of the second connecting rod 22 is hinged to the connecting member 12 to form a second hinge point 27.

[0059] The first connecting rod 21, the second connecting rod 22, the connecting member 12 and the box assembly 3 form a four-bar mechanism, the first connecting rod 21 and the second connecting rod 22 are rocker arms, during the opening and closing process of the door body 11, the connecting member 12 drives the first hinge point 26 and the second hinge point 27 to rotate simultaneously, and synchronously drives the first connecting rod 21 and the second connecting rod 22 to rotate, during the rotation process, the fourth hinge point 25 and the third hinge point 28 are fixed on the box assembly 3, which are regarded as a frame, and the positions of the fourth hinge point 25 and the third hinge point 28 are fixed, and the connecting member 12 is directly connected to the door body 11 as a connecting rod, the connecting member 12 rotates around the first hinge point 26, the second connecting rod 22 rotates counterclockwise around the third hinge point 28, and the first connecting rod 21 rotates bidirectionally around the fourth hinge point 25 (alternating counterclockwise and clockwise).

[0060] Taking the first hinge point 26 of the main rotation point of the door body 11 as the main observation point, in the process of opening and closing the door body 11, in the process of the door body 11 rotating from the closed position to the open position, the first hinge point 26 first moves upward and then moves downward in the vertical direction, and the first hinge point 26 first moves away from the box assembly 3 and then moves closer to the box assembly 3 in the horizontal direction. In this way, it can be achieved that in the process of opening the door body 11, the door body 11 rotates away from the box assembly 3 around the first hinge point 26, and at the same time, the door body 11 first moves upward and then moves downward. When the door body 11 rotates to the open position, compared with the dishwasher in the prior art, the door body 11 in this embodiment can be lowered by a suitable distance, thereby avoiding the door body 11 and the wiring harness from being squeezed.

[0061] Furthermore, the second connecting rod 22 and the box assembly 3 form a third hinge point 28; the distance between the first hinge point 26 and the second hinge point 27 is L BC , the distance between the third hinge point 28 and the second hinge point 27 is L CD , the distance between the first hinge point 26 and the third hinge point 28 is L BD ; L BC 2 +L CD 2 <L BD 2 ; In the horizontal direction, the second hinge point 27 is located between the first hinge point 26 and the third hinge point 28.

[0062] In order to ensure that the four-bar linkage moves according to the preset path, it is necessary to ensure that L BC 2 +L CD 2 <L BD 2That is, the triangle formed by the first hinge point 26, the second hinge point 27 and the third hinge point 28 is an obtuse triangle, and, in the horizontal direction, the second hinge point 27 is located between the first hinge point 26 and the third hinge point 28, so that the four-bar linkage can be moved according to the preset path to ensure the stability of the rotation and lifting of the door body 11.

[0063] Furthermore, the transmission assembly 2 also includes a third connecting rod 24; one end of the first connecting rod 21 is hinged to one end of the third connecting rod 24, one end of the second connecting rod 22 is hinged to the other end of the third connecting rod 24, and the third connecting rod 24 is fixedly connected to the box assembly 3.

[0064] One end of the first link 21 is hinged to one end of the third link 24 to form a fourth hinge point 25, one end of the second link 22 is hinged to the other end of the third link 24 to form a third hinge point 28, and the third link 24 is fixed to the box assembly 3, and the third link 24 serves as a frame.

[0065] This arrangement enables the first connecting rod 21, the second connecting rod 22, the third connecting rod 24 and the connecting member 12 to form a four-bar linkage. During assembly, the third connecting rod 24 can be directly fixed to the box assembly 3, which is more convenient to assemble. In this embodiment, the third connecting rod 24 is riveted to the box assembly 3.

[0066] Furthermore, the transmission assembly 2 is provided with a movable pulley 23, which can rotate synchronously with the door body assembly 1; the household appliance also includes a tension spring 5 and a pull rope 6; one end of the tension spring 5 is used to connect to the base 4, and the other end of the tension spring 5 is connected to one end of the pull rope 6, and the other end of the pull rope 6 is used to connect to the base 4; the pull rope 6 passes around the movable pulley 23.

[0067] During the opening and closing process of the door body 11, the movable pulley 23 rotates synchronously with the door body assembly 1, and the pull rope 6 passes around the movable pulley 23. As the movable pulley 23 moves, the tension spring 5 gradually stretches or shortens. Compared with the solution of using a fixed pulley in the prior art, the household appliance provided in this embodiment uses the movable pulley 23 to reduce the force on the tension spring 5, thereby reducing the fatigue strength of the tension spring 5, increasing the fatigue life of the tension spring 5, and reducing the risk of breakage of the tension spring 5.

[0068] The movable pulley 23 is arranged on a component that rotates synchronously with the door body assembly 1. It can be the door body 11 or the connecting member 12.

[0069] Furthermore, the transmission assembly 2 includes a first connecting rod 21 and a second connecting rod 22, and the door body assembly 1 includes a door body 11 and a connecting member 12; the connecting member 12 is fixedly connected to the door body 11; the first connecting rod is hinged to the connecting member 12 to form a first hinge point 26, and the second connecting rod is hinged to the connecting member 12 to form a second hinge point 27; the movable pulley 23 is arranged on the connecting member 12.

[0070] In order to enable the movable pulley 23 to rotate synchronously with the door body assembly 1, the movable pulley 23 can be installed on the connecting member 12, the connecting member 12 is fixedly connected to the door body 11, and the connecting member 12 rotates synchronously with the door body 11, thereby enabling the movable pulley 23 to rotate synchronously with the door body 11.

[0071] The movable pulley 23 is rotatably connected to the connecting member 12 so that the movable pulley 23 can rotate relative to the connecting member 12 .

[0072] Furthermore, the connecting member 12 includes a connecting portion 121 and an extending portion 122 which are connected to each other; the connecting portion 121 is fixedly connected to the door body 11; the first connecting rod 21 and the second connecting rod 22 are respectively hinged to the connecting portion 121; the movable pulley 23 is arranged on the extending portion 122, and the outer contour of the extending portion 122 is a triangle.

[0073] The outer contour of the extension portion 122 is triangular, which can improve the strength of the connecting member 12 and extend the life of the connecting member 12 .

[0074] Among them, one end of the tension spring 5 can be fixed on the reinforcement rib of the base 4, and one end of the pull rope 6 can also be fixed on the reinforcement rib of the base 4, so that the tension spring 5 and the pull rope 6 are connected to the position of the base 4 with greater strength, thereby improving the connection strength.

[0075] The base 4 may be a dishwasher base, or may be other force-bearing components of the dishwasher.

[0076] Furthermore, a first fixed pulley assembly is provided on one side of the movable pulley 23, and a second fixed pulley assembly is provided on the other side of the movable pulley 23; the pull rope 6 passes around the first fixed pulley assembly, the movable pulley 23 and the second fixed pulley assembly in sequence.

[0077] By providing the first fixed pulley assembly and the second fixed pulley assembly, the stretching direction of the pull rope 6 can be controlled, thereby adjusting the stretching direction of the pull rope 6 according to the specific conditions of the dishwasher, so that the pull rope 6 can be arranged in the dishwasher more conveniently.

[0078] The first fixed pulley assembly may include one fixed pulley or multiple fixed pulleys, and the second fixed pulley assembly may include one fixed pulley or multiple fixed pulleys.

[0079] Furthermore, the first fixed pulley assembly includes a first fixed pulley 7, and the first fixed pulley 7 is arranged below the movable pulley 23; the second fixed pulley assembly includes a second fixed pulley 8 and a third fixed pulley 9; in the horizontal direction, the second fixed pulley 8 and the third fixed pulley 9 are sequentially arranged on one side of the movable pulley 23, and the second fixed pulley 8 and the third fixed pulley 9 are arranged at different heights; the pull rope 6 passes around the first fixed pulley 7, the movable pulley 23, the second fixed pulley 8 and the third fixed pulley 9 in turn.

[0080] The second fixed pulley 8 and the third fixed pulley 9 are arranged at different heights. The second fixed pulley 8 may be higher than the third fixed pulley 9 , or the third fixed pulley 9 may be higher than the second fixed pulley 8 .

[0081] In this embodiment, the tension spring 5 is located below the movable pulley 23, and the pull rope 6 below the movable pulley 23 is stretched upward after adjusting the direction through the first fixed pulley 7, and then passes through the second fixed pulley 8 and the third fixed pulley 9 downward and upward in sequence after bypassing the movable pulley 23. The pull rope 6 bypassing the third fixed pulley 9 is connected to the base 4, and the connection position of the pull rope 6 and the base 4 is located above the connection position of the tension spring 5 and the base 4. Among them, the second fixed pulley 8 and the third fixed pulley 9 are rotatably connected to the base 4, and the first fixed pulley 7 is rotatably connected to the box assembly 3.

[0082] The above arrangement can reasonably arrange the tension spring 5 and the pull rope 6, so that the tension spring 5 and the pull rope 6 occupy less space, which facilitates the arrangement of the pull rope 6 and the tension spring 5 in the dishwasher.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A household appliance, characterized in that: It comprises a door assembly (1), a transmission assembly (2) and a box assembly (3); The transmission assembly (2) connects the door assembly (1) and the box assembly (3), the transmission assembly (2) comprises a first hinge point (26) and a second hinge point (27) connected to the door assembly (1), the door assembly (1) is rotatably connected to the box assembly (3) via the transmission assembly (2), When the door body assembly (1) rotates in a direction away from the box body assembly (3), the transmission assembly (2) drives the door body assembly (1) to move downward via the first hinge point (26) and the second hinge point (27); When the door assembly (1) is rotated to an open position, the door assembly (1) can move downward to increase the distance between the door assembly (1) and the inner container; The transmission assembly (2) is provided with a movable pulley (23), and the movable pulley (23) can rotate synchronously with the door assembly (1); The household appliance further comprises a tension spring (5) and a pull cord (6); One end of the tension spring (5) is fixed on the reinforcing rib of the base (4), the other end of the tension spring (5) is connected to one end of the pull rope (6), and the other end of the pull rope (6) is fixed on the reinforcing rib of the base (4); the pull rope (6) passes around the movable pulley (23); The transmission assembly (2) comprises a first connecting rod (21) and a second connecting rod (22), and the door body assembly (1) comprises a door body (11) and a connecting member (12); The connecting member (12) is fixedly connected to the door body (11); The first connecting rod is hinged to the connecting member (12) to form the first hinge point (26), and the second connecting rod is hinged to the connecting member (12) to form the second hinge point (27); The movable pulley (23) is arranged on the connecting member (12); The connecting member (12) comprises a connecting portion (121) and a protruding portion (122) which are connected to each other; The connecting portion (121) is fixedly connected to the door body (11); the first connecting rod (21) and the second connecting rod (22) are respectively hinged to the connecting portion (121); The movable pulley (23) is arranged on the protruding portion (122), and the outer contour of the protruding portion (122) is a triangle; A first fixed pulley assembly is provided on one side of the movable pulley (23), and a second fixed pulley assembly is provided on the other side of the movable pulley (23); The pull rope (6) is passed around the first fixed pulley assembly, the movable pulley (23) and the second fixed pulley assembly in sequence.

2. The household appliance according to claim 1, characterized in that: The transmission assembly (2) comprises a first connecting rod (21) and a second connecting rod (22), and the door body assembly (1) comprises a door body (11) and a connecting member (12); The connecting member (12) is fixedly connected to the door body (11); The first connecting rod (21) is hinged to the connecting member (12) to form the first hinge point (26), and the second connecting rod (22) is hinged to the connecting member (12) to form the second hinge point (27).

3. The household appliance according to claim 2, characterized in that: One end of the first connecting rod (21) is hinged to the box assembly (3), and the other end of the first connecting rod (21) is hinged to the connecting piece (12); one end of the second connecting rod (22) is hinged to the box assembly (3), and the other end of the second connecting rod (22) is hinged to the connecting piece (12); The first connecting rod (21) and the second connecting rod (22) are both hinged between the connecting member (12) and the box assembly (3) to form a four-bar linkage.

4. The household appliance according to claim 3, characterized in that: The second connecting rod (22) and the box assembly (3) form a third hinge point (28); The distance between the first hinge point (26) and the second hinge point (27) is L BC , the distance between the third hinge point (28) and the second hinge point (27) is L CD , the distance between the first hinge point (26) and the third hinge point (28) is L BD ; L BC 2 +L CD 2 <L BD 2 ; Along the horizontal direction, the second hinge point (27) is located between the first hinge point (26) and the third hinge point (28).

5. The household appliance according to claim 3, characterized in that: The transmission assembly (2) further comprises a third connecting rod (24); One end of the first connecting rod (21) is hinged to one end of the third connecting rod (24), one end of the second connecting rod (22) is hinged to the other end of the third connecting rod (24), and the third connecting rod (24) is fixedly connected to the box assembly (3).

6. The household appliance according to claim 1, characterized in that: The first fixed pulley assembly comprises a first fixed pulley (7), and the first fixed pulley (7) is arranged below the movable pulley (23); The second fixed pulley assembly comprises a second fixed pulley (8) and a third fixed pulley (9); along the horizontal direction, the second fixed pulley (8) and the third fixed pulley (9) are sequentially arranged on one side of the movable pulley (23), and the second fixed pulley (8) and the third fixed pulley (9) are arranged at different heights; The pull rope (6) is passed around the first fixed pulley (7), the movable pulley (23), the second fixed pulley (8) and the third fixed pulley (9) in sequence.

Images