Lifting devices and household appliances

Abstract

The present invention discloses a lifting device and a household appliance, wherein the lifting device comprises a load-bearing component, a base, a lifting component and an electric drive component. The lifting component is arranged on the base and is rotatably connected with the base, the load-bearing component is arranged on the lifting component, and the lifting component can be expanded and retracted. The electric drive component is connected to the lifting component, and the electric drive component is configured to drive the lifting component to rotate relative to the base to drive the lifting component to expand to drive the load-bearing component to rise, and to drive the lifting component to retract to drive the load-bearing component to descend; or to drive the lifting component to rotate relative to the base to drive the lifting component to expand to drive the load-bearing component to descend, and to drive the lifting component to retract to drive the load-bearing component to rise. In this way, the electric drive component can drive the lifting component to expand or retract to drive the load-bearing component to rise, and can also drive the lifting component to retract or expand to drive the load-bearing component to descend, without the need for the user to perform manual and bending operations.

Description

Technical Field

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

[0002] At present, household dishwashers generally have drawer-type, drop-down door-type and flip-top-type door opening methods. In most household dishwashers, the bowl basket does not have a lifting function in the vertical direction. Users need to bend over every time to put in and take out tableware, which brings great inconvenience in daily life.

[0003] In the related art, a bowl basket lifting device is used to realize the lifting function of the bowl basket in the vertical direction. The function of the bowl basket lifting device is to change the relative height between the lower end of the bowl basket and the lower end of the inner pot through a lifting component. The bowl basket lifting device currently used generally requires manual lifting of the bowl basket. Although it is possible to place and take out tableware without bending over, it is still necessary to bend over when lifting and putting down the bowl basket.

[0004] In addition, when a large amount of tableware is placed in the bowl basket, the user needs to exert greater strength to lift the bowl basket, thus reducing the user experience. Summary of the invention

[0005] The invention provides a lifting device and a household appliance.

[0006] The lifting device according to the embodiment of the present invention comprises:

[0007] load bearing assembly;

[0008] Base;

[0009] A lifting assembly is disposed on the base, the load-bearing assembly is disposed on the lifting assembly and is rotatably connected to the lifting assembly, the lifting assembly is rotatably connected to the base, and the lifting assembly can be expanded and retracted; and

[0010] an electric drive assembly connected to the lifting assembly, the electric drive assembly being configured to drive the lifting assembly to rotate relative to the base to drive the lifting assembly to expand to drive the load-bearing assembly to rise, and to drive the lifting assembly to retract to drive the load-bearing assembly to descend; or

[0011] The electric drive assembly is configured to drive the lifting assembly to rotate relative to the base to drive the lifting assembly to expand to drive the load-bearing assembly to descend, and to drive the lifting assembly to contract to drive the load-bearing assembly to ascend.

[0012] The lifting device of the above embodiment can drive the lifting component to expand or contract to drive the load-bearing component to rise through the electric drive component, and can also drive the lifting component to contract or expand to drive the load-bearing component to descend. This eliminates the need for users to perform manual operations and bend over, thereby improving user experience.

[0013] In some embodiments, the load-bearing component includes a load-bearing component and a retaining frame, the load-bearing component is disposed on the retaining frame, and the retaining frame is rotatably connected to the lifting assembly.

[0014] In some embodiments, the lifting assembly includes two first gear links and two second gear links rotatably connected to the two first gear links, respectively. The two first gear links are each formed with a first gear portion, the two first gear portions are meshed with each other and are respectively rotatably connected to the base, the two second gear links are each rotatably connected to the carrier assembly, and the electric drive assembly is connected to one of the two first gear portions.

[0015] In some embodiments, the electric drive assembly includes a motor, a motor shaft of the motor being connected to one of the two first gear parts.

[0016] In some embodiments, the lifting assembly includes two first gear connecting rods and two second gear connecting rods rotatably connected to the two first gear connecting rods, the two first gear connecting rods are each formed with a first gear portion, the two first gear portions are meshed with each other and are respectively rotatably connected to the base, and the electric drive assembly is connected to one of the two first gear portions;

[0017] The lifting assembly also includes two third gear links and two fourth gear links rotatably connected to the two third gear links respectively, the two second gear links form a second gear portion, the two third gear links each form a third gear portion, the two second gear portions are meshed with each other and respectively meshed with the two third gear portions, the two third gear portions are meshed with each other and respectively meshed with the two second gear portions, and the two fourth gear links are both rotatably connected to the carrier assembly.

[0018] In certain embodiments, the lifting assembly further includes a support base, and the two second gear portions and the two third gear portions are both disposed on the support base and are rotatably connected to the support base.

[0019] In certain embodiments, the two fourth gear connecting rods are each formed with a fourth gear portion, the two fourth gear portions are meshed with each other, and the two fourth gear portions are both rotatably connected to the carrier assembly.

[0020] In some embodiments, the number of the base, the lifting assembly, and the electric drive assembly are all two and they are symmetrically arranged on both sides of the load-bearing assembly.

[0021] A household appliance according to an embodiment of the present invention comprises a cavity and a lifting device according to any one of the above embodiments, wherein the lifting device is arranged in the cavity.

[0022] The household appliance of the above-mentioned embodiment can drive the lifting component to expand or contract to drive the load-bearing component to rise through the electric drive component, and can also drive the lifting component to contract or expand to drive the load-bearing component to descend. This eliminates the need for users to perform manual operations and bend over, thereby improving user experience.

[0023] In some embodiments, during the process in which the electric drive assembly drives the lifting assembly to rotate relative to the base to drive the lifting assembly to expand or contract to drive the load-bearing assembly to rise, the load-bearing assembly gradually extends out of the cavity;

[0024] In the process that the electric drive assembly drives the lifting assembly to rotate relative to the base to drive the lifting assembly to retract or expand to drive the load-bearing assembly to descend, the load-bearing assembly is gradually retracted into the cavity.

[0025] In certain embodiments, the carrier assembly includes a bowl and basket assembly.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] Figure 1 is a schematic structural diagram of a household appliance according to an embodiment of the present invention;

[0029] Figure 2 is another structural schematic diagram of a household appliance according to an embodiment of the present invention;

[0030] Figure 3 is a schematic structural diagram of a lifting device according to an embodiment of the present invention;

[0031] Figure 4 is another structural schematic diagram of the lifting device according to an embodiment of the present invention;

[0032] Figure 5 is another structural schematic diagram of the lifting device according to an embodiment of the present invention;

[0033] Figure 6 is another structural schematic diagram of the lifting device according to an embodiment of the present invention;

[0034] Figure 7 yes Figure 4 Enlarged schematic diagram of position VII in the figure.

[0035] Description of main component symbols:

[0036] Household appliance 100, lifting device 10, load-bearing component 11, load-bearing component 111, retaining frame 112, base 12, lifting component 13, first gear connecting rod 131, first gear part 1311, second gear connecting rod 132, second gear part 1321, third gear connecting rod 133, third gear part 1331, fourth gear connecting rod 134, fourth gear part 1341, support seat 135, electric drive component 14, motor 141, connecting member 15, limiting member 16, fixing member 17, cavity 20, main body 30, guide rail component 40. DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] See also Figures 1 to 3 The lifting device 10 of the embodiment of the present invention includes a load-bearing component 11, a base 12, a lifting component 13 and an electric drive component 14. The base 12 is located below the load-bearing component 11, the lifting component 13 is arranged on the base 12, and the load-bearing component 11 is arranged on the lifting component 13 and is rotatably connected to the lifting component 13. The lifting component 13 is also rotatably connected to the base 12, and the lifting component 13 can be expanded and retracted. The electric drive component 14 is connected to the lifting component 13, and the electric drive component 14 is configured to drive the lifting component 13 to rotate relative to the base 12 to drive the lifting component 13 to expand to drive the load-bearing component 11 to rise, and drive the lifting component 13 to retract to drive the load-bearing component 11 to descend.

[0041] The lifting device 10 is used in a household appliance 100 according to an embodiment of the present invention. The household appliance 100 is, for example, a drawer-type dishwasher. The household appliance 100 includes a cavity 20, and the lifting device 10 is disposed in the cavity 20. Generally, the lifting device 10 is fixedly mounted on the cavity 20 through a base 12, that is, the base 12 and the cavity 20 are fixedly connected. In the process in which the electric drive component 14 drives the lifting component 13 to rotate relative to the base 12 to drive the lifting component 13 to expand to drive the load-bearing component 11 to rise, the load-bearing component 11 gradually extends out from the cavity 20. In the process in which the electric drive component 14 drives the lifting component 13 to rotate relative to the base 12 to drive the lifting component 13 to contract to drive the load-bearing component 11 to rise, the load-bearing component 11 gradually retracts into the cavity 20.

[0042] In the illustrated embodiment, the electric drive assembly 14 is installed near the bottom of the cavity 20, so that when the electric drive assembly 14 drives the lifting assembly 13 to expand, it can drive the load-bearing assembly 11 to rise, and when the electric drive assembly 14 drives the lifting assembly 13 to retract, it can drive the load-bearing assembly 11 to descend.

[0043] It is understandable that in other embodiments, the electric drive assembly 14 can also be configured to drive the lifting assembly 13 to rotate relative to the base 12 to drive the lifting assembly 13 to expand to drive the load-bearing assembly 11 to descend, and drive the lifting assembly 13 to contract to drive the load-bearing assembly 11 to rise, without specific limitation. Specifically, the electric drive assembly 14 can be installed at a position close to the top of the cavity 20, and the electric drive assembly 14 and the base 12 are located above the load-bearing assembly 11, so that when the electric drive assembly 14 drives the lifting assembly 13 to expand, it can drive the load-bearing assembly 11 to descend, and when the electric drive assembly 14 drives the lifting assembly 13 to contract, it can drive the load-bearing assembly 11 to rise. In the process of the electric drive assembly 14 driving the lifting assembly 13 to contract to drive the load-bearing assembly 11 to rise, the load-bearing assembly 11 gradually extends out of the cavity 20, and in the process of the electric drive assembly 14 driving the lifting assembly 13 to expand to drive the load-bearing assembly 11 to descend, the load-bearing assembly 11 gradually retracts into the cavity 20.

[0044] The lifting device 10 and household appliance 100 of the above-mentioned embodiment can drive the lifting component 13 to expand or contract to drive the load-bearing component 11 to rise through the electric drive component 14, and can also drive the lifting component 13 to contract or expand to drive the load-bearing component 11 to descend. This does not require the user to perform manual operation or bend over, thereby improving the user experience.

[0045] Specifically, in this embodiment, the upper end of the lifting assembly 13 is rotatably connected to the load-bearing assembly 11, and the lower end of the lifting assembly 13 is rotatably connected to the base 12 and fixedly connected to the electric drive assembly 14. When the electric drive assembly 14 drives the lower end of the lifting assembly 13 to rotate relative to the base 12, the lifting assembly 13 can be expanded or retracted, thereby driving the load-bearing assembly 11 to rise or fall.

[0046] See also Figure 3 In the above embodiment, the object carrier assembly 11 includes the object carrier 111 and a holder 112 . The object carrier 111 is disposed on the holder 112 , and the holder 112 is rotatably connected to the lifting assembly 13 .

[0047] In this way, the retaining frame 112 can ensure the stability of the load 111 when the load 111 rises or falls, and prevent the load 111 from shaking too much, thereby avoiding instability or even falling.

[0048] Specifically, Figure 3 and Figure 4In this embodiment, the holder 112 is rotatably connected to the lifting assembly 13. When the lifting assembly 13 rotates relative to the holder 112, the lifting assembly 13 can drive the holder 112 to rise or fall. It can be understood that in some examples, the lifting device 10 may not be provided with the holder 112, and the load 111 is directly made to match the lifting assembly 13, and the two are directly rotatably connected, and it only needs to be able to keep the load 111 stable.

[0049] It should be noted that the carrier 111 can be used to hold items that need to be placed in the household appliance 100. For example, for a dishwasher, the carrier 111 can be a bowl basket, a knife and fork basket, a chopstick basket, etc. For a disinfection cabinet, the carrier 111 can be a container for placing items to be disinfected.

[0050] See also Figure 1 and Figure 2 In one example, the household appliance 100 is a dishwasher, and the cavity 20 is the inner tank of the dishwasher. Figure 1 and Figure 2 In the example shown, the dishwasher further includes a body 30 and a guide rail assembly 40, wherein the guide rail assembly 40 connects the inner tank and the body 30, and the inner tank can slide out or slide into the body 30 through the guide rail assembly 40, and the base 12 of the lifting device 10 is fixedly mounted on the inner tank. In this embodiment, when the user needs to wash the tableware, the user first pulls the inner tank out of the body 30, and then the electric drive assembly 14 drives the lifting assembly 13 to rotate relative to the base 12 to drive the lifting assembly 13 to unfold, thereby driving the holder 112 and the load 111 to rise, and after rising to the highest point, the electric drive assembly 14 stops driving, and the user places the tableware on the load 111. Subsequently, the electric drive assembly 14 drives the lifting assembly 13 to rotate relative to the base 12 again to drive the lifting assembly 13 to contract, thereby driving the holder 112 and the load 111 to descend, until the load 111 is retracted into the inner tank (i.e., descends to the lowest point), and the electric drive assembly 14 stops driving, at which time, the user can push the inner tank into the body 30 and start washing. After washing, the workflow for taking and placing dishes is similar to the above-mentioned workflow, and will not be repeated here. It is understandable that in other examples, the household appliance 100 may also be a household appliance 100 such as a washing machine or a disinfection cabinet. It is also understandable that in this embodiment, the lifting device 10 is installed on the inner container, and when the inner container slides out or is pushed out of the body 30, the lifting device 10 will also slide out or be pushed out of the body 30 with the inner container.

[0051] It should be noted that, in the above embodiment, the motor 141 of the electric drive assembly 14 is installed outside the cavity 20. Specifically, the motor 141 is installed on the outer surface of the side wall of the cavity 20 through the fixing member 17, and the fixing member 17 can be a bolt or other element for fixing the connection. In this way, it can ensure that the motor 141 is arranged outside the cavity 20, realize the separation of water and electricity, optimize the layout of water and electricity, and prevent the water in the cavity 20 from splashing into the motor 141 and causing the motor 141 to malfunction.

[0052] See also Figure 3 to Figure 4 In some embodiments, the number of the base 12, the lifting assembly 13 and the electric drive assembly 14 are two, and they are respectively arranged on two symmetrical sides of the load-bearing assembly 11. The two lifting assemblies 13 are rotatably connected to the two bases 12, and the two lifting assemblies 13 are rotatably connected to the load-bearing assembly 11, and the two electric drive assemblies 14 are connected to the two lifting assemblies 13.

[0053] In this way, the synchronous lifting and lowering of the carrier 111 can be achieved, and the stability of the carrier 111 when it is rising and falling is guaranteed.

[0054] It can be understood that, in the above embodiment, the number of the retaining frames 112 of the object bearing assembly 11 connected to the lifting assembly 13 is also two, and the two retaining frames 112 are rotatably connected to the two lifting assemblies 13 respectively.

[0055] In one embodiment, the lifting assembly 13 includes two first gear links 131 and two second gear links 132 rotatably connected to the two first gear links 131, respectively. The two first gear links 131 are each formed with a first gear portion 1311. The two first gear portions 1311 are meshed with each other and are respectively rotatably connected to the base 12. The two second gear links 132 are each rotatably connected to the carrier assembly 11, and the electric drive assembly 14 is connected to one of the two first gear portions 1311.

[0056] Specifically, in this embodiment, two first gear connecting rods 131 are respectively disposed on two symmetrical sides of the base 12 and are both rotatably connected to the base 12. Two second gear connecting rods 132 are also respectively disposed on two symmetrical sides of the base 12 and are respectively connected to the two first gear connecting rods 131 and are both rotatably connected to the load-bearing assembly 11. Figure 3In this embodiment, the two first gear connecting rods 131 and the two second gear connecting rods 132 are rotatably connected through the connecting member 15 and the axial movement of the two is limited by the limiter 16 to ensure the stability of the transmission. The connecting member 15 can be a hinged element such as a pin. The limiter 16 can be a retaining spring. It can be understood that in this embodiment, the axial movement of the first gear connecting rod 131 when it is rotatably connected to the base 12 can also be limited by setting the limiter 16. At the same time, the axial movement of the second gear connecting rod 132 when it is rotatably connected to the retaining frame 112 can also be limited by setting the limiter 16.

[0057] In addition, in the present embodiment, the electric drive assembly 14 includes a motor 141, and the motor shaft 1411 of the motor 141 is fixedly connected to one of the two first gear parts 1311. When the motor shaft 1411 rotates, one first gear part 1311 can rotate along with the motor shaft 1411, thereby driving the other first gear part 1311 to rotate, thereby making the distance between the two connecting parts of the two first gear connecting rods 131 and the two second gear connecting rods 132 smaller or larger, thereby making the lifting assembly 13 expand or contract. In the present embodiment, when the motor shaft 1411 of the motor 141 rotates counterclockwise, the distance between the two connecting parts of the two first gear connecting rods 131 and the two second gear connecting rods 132 is reduced, thereby making the lifting assembly 13 expand upward to drive the holder 112 to rise, thereby driving the load 111 to rise. When the motor shaft 1411 of the motor 141 rotates clockwise, the distance between the two connecting points of the two first gear links 131 and the two second gear links 132 increases, so that the lifting assembly 13 contracts downward to drive the retaining frame 112 to descend, thereby driving the load 111 to descend.

[0058] It is understandable that in other embodiments, when the carrier 111 needs to be lifted, the motor shaft 1411 of the motor 141 may rotate clockwise, and when the carrier 111 needs to be lowered, the motor shaft 1411 of the motor 141 may rotate counterclockwise, without specific limitation.

[0059] In this embodiment, the two second gear connecting rods 132 are both formed with a second gear part 1321, and the two second gear connecting rods 132 are respectively connected to the load-bearing component 11 through the two second gear parts 1321, and the two second gear parts 1321 are meshed with each other. In this way, the two second gear parts 1321 are meshed with each other, and when one rotates, the other will also rotate synchronously, thereby ensuring the stability of the rise and fall of the load-bearing 111. It can be understood that in other embodiments, the second gear connecting rod 132 may not form the second gear part 1321, and the two second gear connecting rods 132 are directly connected to the load-bearing component 11 for rotation, and the specific connection method is not limited.

[0060] See also Figures 3 to 7 In another embodiment, the lifting assembly 13 includes two first gear links 131 and two second gear links 132 rotatably connected to the two first gear links 131, the two first gear links 131 are each formed with a first gear portion 1311, the two first gear portions 1311 are meshed with each other and are respectively rotatably connected to the base 12, and the electric drive assembly 14 is connected to one of the two first gear portions 1311. In addition, the lifting assembly 13 also includes two third gear links 133 and two fourth gear links 134 rotatably connected to the two third gear links 133, the two second gear links 132 are formed with a second gear portion 1321, the two third gear links 133 are each formed with a third gear portion 1331, the two second gear portions 1321 are meshed with each other and are respectively meshed with the two third gear portions 1331, the two third gear portions 1331 are meshed with each other and are respectively meshed with the two second gear portions 1321, and the two fourth gear links 134 are both rotatably connected to the load-bearing assembly 11.

[0061] Specifically, in this embodiment, the connection mode between the first gear connecting rod 131 and the second gear connecting rod 132, the structure of the first gear connecting rod 131, and the connection mode between the first gear connecting rod 131 and the base 12 are consistent with the connection mode in the above embodiment. That is to say, in this embodiment, the two first gear connecting rods 131 are also respectively arranged on the symmetrical sides of the base 12 and are both rotatably connected to the base 12. The two second gear connecting rods 132 are also respectively arranged on the symmetrical sides of the base 12 and are respectively connected to the two first gear connecting rods 131, and both are rotatably connected to the carrier assembly 11. At the same time, the two first gear connecting rods 131 and the two second gear connecting rods 132 are also rotatably connected through two connecting members 15 and the axial movement of the two is limited by the limit member 16 to maintain the stability of the rotation.

[0062] In addition, in this embodiment, the two third gear connecting rods 133 are also arranged on the symmetrical sides of the base 12, and the two fourth gear connecting rods 134 are also arranged on the symmetrical sides of the base 12. The third gear connecting rod 133 and the fourth gear connecting rod 134 are also connected by rotating the connecting member 15 and limiting the axial movement of the two by setting the limiter 16 (such as Figure 7 At the same time, the two fourth gear connecting rods 134 are also rotatably connected to the load-bearing component 11 and their axial movement is limited by the limiter 16.

[0063] In addition, in this embodiment, the two second gear parts 1321 of the two second gear links 132 are respectively meshed with the two third gear parts 1331 of the two third gear links 133, and the two second gear parts 1321 are also meshed with each other, and the two third gear parts 1331 are also meshed with each other. In this way, when the electric drive assembly 14 drives a first gear part 1311 to rotate, the second gear link 132 will rotate, so that the second gear part 1321 will also rotate, thereby driving the third gear part 1331 to rotate, and then the third gear link 133 is rotated, thereby driving the fourth gear link 134 to rotate to drive the load-bearing assembly 11 to rise or fall.

[0064] See also Figure 3 , Figure 4 and Figure 6 In this embodiment, when the load 111 needs to be raised, the motor shaft 1411 of the motor 141 rotates counterclockwise, and the distance between the connection between one first gear connecting rod 131 and one second gear connecting rod 132 and the connection between another first gear connecting rod 131 and another second gear connecting rod 132 becomes smaller (see Figure 3 ), the first gear link 131 and the second gear link 132 are unfolded upward, and the two mutually meshing second gear parts 1321 rotate, thereby driving the two third gear parts 1331 to rotate so that the two third gear links 133 rotate, thereby reducing the distance between the two connection points of the two third links and the two fourth links, and the third gear link 133 and the fourth gear link 134 are unfolded upward, thereby driving the carrier assembly 11 to rise.

[0065] When the carrier 111 needs to be lowered, when the motor shaft 1411 of the motor 141 rotates clockwise, the distance between the two connection points of the two first gear links 131 and the two second gear links 132 becomes larger, the first gear links 131 and the second gear links 132 shrink downward, and the two mutually meshing second gear parts 1321 rotate, thereby driving the two third gear parts 1331 to rotate so that the two third gear links 133 rotate, thereby increasing the distance between the two connection points of the two third links and the two fourth links, and the third gear links 133 and the fourth gear links 134 shrink downward, thereby driving the carrier assembly 11 to descend.

[0066] See also Figure 3 and Figure 6In this embodiment, in order to ensure the meshing stability of the second gear part 1321 and the third gear part 1331 and the working stability of the lifting assembly, the lifting assembly 13 further includes a support seat 135, and the two second gear parts 1321 and the two third gear parts 1331 are both disposed on the support seat 135 and are rotatably connected to the support seat 135. When the lifting assembly 13 is extended upward, the support seat 135 moves upward, and when the lifting assembly 13 is retracted downward, the support seat 135 moves downward.

[0067] It is understandable that, in this embodiment, the axial movement of the second gear connecting rod 132 when being rotatably connected to the support seat 135 can also be limited by setting a limiter 16. At the same time, the axial movement of the third gear connecting rod 133 when being rotatably connected to the support seat 135 can also be limited by setting a limiter 16.

[0068] Also, please read Figure 3 In this embodiment, the two fourth gear connecting rods 134 are both formed with a fourth gear part 1341, and the two fourth gear connecting rods 134 are respectively connected to the load-bearing component 11 through the two fourth gear parts 1341, and the two fourth gear parts 1341 are meshed with each other. In this way, the two fourth gear parts 1341 are meshed with each other, and when one rotates, the other also rotates, thereby ensuring the stability of the rise and fall of the load-bearing 111. It can be understood that in other embodiments, the fourth gear part 1341 may not be formed on the fourth gear connecting rod 134, and the two fourth gear connecting rods 134 are directly connected to the load-bearing component 11 for rotation, and the specific connection method is not limited.

[0069] Finally, it should be noted that the above only lists the embodiments in which the lifting assembly 13 includes 2 and 4 gear connecting rods. It is understandable that the specific number of gear connecting rods can be increased or decreased according to the actual required lifting stroke. For example, when the required lifting height is higher, more gear connecting rods can be used to achieve lifting and lowering, and the working principle is the same as the working principle of the above embodiment.

[0070] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0071] The disclosure herein provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described herein. Of course, they are merely examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art may appreciate the application of other processes and / or the use of other materials.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0073] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A lifting device, characterized in that: include load bearing assembly; Base; A lifting assembly is arranged on the base, the load-bearing assembly is arranged on the lifting assembly and is rotatably connected to the lifting assembly, the lifting assembly is rotatably connected to the base, and the lifting assembly can be expanded and retracted; and An electric drive assembly connected to the lifting assembly, the electric drive assembly being configured to drive the lifting assembly to rotate relative to the base to drive the lifting assembly to expand to drive the load-bearing assembly to rise, and to drive the lifting assembly to retract to drive the load-bearing assembly to descend; or The electric drive assembly is configured to drive the lifting assembly to rotate relative to the base to drive the lifting assembly to expand to drive the load-bearing assembly to descend, and to drive the lifting assembly to retract to drive the load-bearing assembly to ascend; The lifting assembly includes two first gear links and two second gear links rotatably connected to the two first gear links respectively, the two first gear links are each formed with a first gear portion, the two first gear portions are meshed with each other and are respectively rotatably connected to the base, the two second gear links are each rotatably connected to the carrier assembly, and the electric drive assembly is connected to one of the two first gear portions.

2. The lifting device according to claim 1, characterized in that: The load-bearing component comprises a load-bearing and a retaining frame, the load-bearing is arranged on the retaining frame, and the retaining frame is rotatably connected to the lifting component.

3. The lifting device according to claim 1, characterized in that: The electric drive assembly includes a motor, a motor shaft of which is connected to one of the two first gear parts.

4. The lifting device according to claim 1, characterized in that: The lifting assembly also includes two third gear links and two fourth gear links rotatably connected to the two third gear links respectively, the two second gear links form a second gear portion, the two third gear links each form a third gear portion, the two second gear portions are meshed with each other and respectively meshed with the two third gear portions, the two third gear portions are meshed with each other and respectively meshed with the two second gear portions, and the two fourth gear links are both rotatably connected to the carrier assembly.

5. The lifting device according to claim 4, characterized in that: The lifting assembly further comprises a support base, and the two second gear parts and the two third gear parts are both arranged on the support base and are rotatably connected to the support base.

6. The lifting device according to claim 4, characterized in that: The two fourth gear connecting rods are each formed with a fourth gear portion, the two fourth gear portions are meshed with each other, and the two fourth gear portions are both rotatably connected to the carrier assembly.

7. The lifting device according to claim 1, characterized in that: The number of the base, the lifting assembly and the electric drive assembly are all two and they are symmetrically arranged on both sides of the load-bearing assembly.

8. A household appliance, characterized in that: include: Cavity; and The lifting device according to any one of claims 1 to 7 is arranged in the cavity.

9. The household appliance as described in claim 8, during the process in which the electric drive component drives the lifting component to rotate relative to the base to drive the lifting component to expand or contract to drive the carrier component to rise, the carrier component gradually extends out of the cavity; during the process in which the electric drive component drives the lifting component to rotate relative to the base to drive the lifting component to contract or expand to drive the carrier component to descend, the carrier component gradually retracts into the cavity.

10. The household appliance according to claim 8, characterized in that: The carrier assembly includes a bowl and basket assembly.

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