Household appliance

Abstract

The utility model discloses a household appliance and relates to the technical field of household appliances, the household appliance comprises a shell and a first commodity shelf, the shell forms a containing cavity, the first commodity shelf is installed in the containing cavity through a lifting mechanism, the lifting mechanism comprises at least one swing arm and a sliding rail structure, one end of the swing arm is arranged in the containing cavity, and the other end of the swing arm is arranged in the sliding rail structure. The sliding rail structure comprises multiple sections of sliding rails which are in telescopic sliding connection with one another, the multiple sections of sliding rails at least comprise the first section of sliding rail and the tail section of sliding rail, and the other end of the swing arm can swing the first storage rack forwards and upwards to the top lifting limit position from the bottom to-be-lifted position; when the first storage rack is located at the top lifting limit position, the multiple sections of sliding rails extend front and back and can slide relatively, so that the first storage rack can slide forwards to the top locking position, and when the first storage rack is located at the top locking position, the first storage rack is located in front of the containing cavity and limited; at least part of the rear end of the first section of sliding rail is located in the containing cavity.

Description

[0001] This application claims priority to Chinese Patent Application No. 202410541707.7, filed on April 30, 2024, entitled “Lifting Mechanism and Dishwasher”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This utility model relates to the field of household appliance technology, and in particular to a household appliance. Background Technology

[0003] Household appliances, including dishwashers, refrigerators, freezers, and storage cabinets, typically have shelves. Some of these shelves are positioned low, requiring users to bend over to retrieve items. For example, with a dishwasher, if the lower basket isn't raised or lowered, users have to bend over to load or unload dishes, resulting in a poor user experience.

[0004] To address this, some manufacturers have implemented lifting mechanisms to raise and lower low-position shelves to a certain height. However, after the shelves are raised, they end up on the front of the appliance's casing, occupying a significant amount of space in front of the appliance's casing. Utility Model Content

[0005] The main purpose of this utility model is to propose a household appliance that optimizes the spatial layout of the shelf when it is in the raised position, thereby reducing the space occupied by the shelf on the front side of the housing.

[0006] To achieve the above objectives, the present invention provides a household appliance comprising a housing and a first shelf, wherein the housing forms a receiving cavity, and the first shelf is mounted in the receiving cavity via a lifting mechanism, the lifting mechanism comprising:

[0007] At least one swing arm, one end of which is disposed within the receiving cavity, and the other end which is capable of swinging back and forth and up and down; and,

[0008] The slide rail structure includes multiple slide rail sections that are mutually telescopically connected. The multiple slide rail sections include at least a first slide rail section and a last slide rail section. The first slide rail section is directly or indirectly connected to the other end of the swing arm, and the last slide rail section is connected to the first shelf.

[0009] The other end of the swing arm can swing the first shelf forward and upward from the bottom position to the top lifting limit position. When the first shelf is at the top lifting limit position, the multi-section slide rail extends forward and backward and can slide relative to each other so that the first shelf can slide forward to the top locking position.

[0010] When the first shelf is in the top locking position, the first shelf is located in front of the receiving cavity and is limited, and the rear end of the first slide rail is at least partially inside the receiving cavity.

[0011] In one embodiment, the slide rail structure further includes an intermediate slide rail, which is disposed between the first slide rail and the last slide rail.

[0012] In one embodiment, when the first shelf is in the top locked position, the distance between the rear end face of the first section slide rail and the front end face of the housing is L1, wherein 10mm≤L1≤25mm.

[0013] In one embodiment, when the first shelf is in the top locked position, the distance between the first section slide rail and an adjacent and opposite side wall in the receiving cavity is L2, wherein 20mm≤L2≤40mm.

[0014] In one embodiment, when the first shelf is in the top locked position, the lower end of the slide rail structure is higher than the lower end of the second shelf.

[0015] In one embodiment, a second shelf is provided in the receiving cavity, and corresponding to the top locking position, the lower end of the first shelf protrudes upward from the lower end of the second shelf.

[0016] In one embodiment, when the first shelf is in the top locked position, the rear end of the first section of the slide rail is located between one side of the second shelf and the side wall of the receiving cavity.

[0017] In one embodiment, one side of the second shelf near the head end tapers inward to form a clearance area;

[0018] When the first shelf is in the top locked position, the rear end of the first section of the slide rail extends into the clearance area.

[0019] In one embodiment, the household appliance includes a dishwasher, wherein the first shelf is configured as a lower dish rack and the second shelf is configured as an upper dish rack.

[0020] In one embodiment, the household appliance further includes:

[0021] A locking component is installed on the first shelf, with the side of the locking component in the left-right direction being the installation side;

[0022] At least one guide rail is provided on the mounting side of the locking member, the guide rail having an arc-shaped segment connecting the first end of the guide rail, the arc-shaped segment serving to provide an arc-shaped sliding track for the sliding portion of the swing arm; and,

[0023] A limiting structure is connected to the tail end of the guide rail and is arranged rearward. The limiting structure is used to limit the sliding part on the swing arm when the first shelf moves to the top locking position, so as to restrict the relative movement of the swing arm and the first shelf.

[0024] In one embodiment, the swing arm is provided with a first sliding portion and a second sliding portion;

[0025] The guide rails are provided in at least two forms, and the at least two guide rails include:

[0026] A first guide rail, wherein the first guide rail has an arc-shaped segment that curves backward and downward from its first end to its last end, and the first guide rail is used to slide in conjunction with the first sliding part of the swing arm; and,

[0027] The second guide rail is located below the first guide rail. The arc segment of the second guide rail is a second arc segment, which is arranged in a backward and upward arc shape from the first end to the last end of the second guide rail. The second guide rail is used to slide with the second sliding part of the swing arm.

[0028] The limiting structure includes a first limiting part provided at the tail end of the first guide rail and a second limiting part provided at the tail end of the second guide rail. The first limiting part limits the first sliding part of the swing arm vertically, and the second limiting part limits the second sliding part of the swing arm forward and backward.

[0029] In one embodiment, the first guide rail is configured as a first guide groove, the first end of the first guide groove passes through the locking member for the first sliding part to slide into, and the rear end of the first guide groove passes downward through the locking member to form a lower end slot.

[0030] A stop surface is formed at the lower end of the first guide groove, near the rear, and the stop surface forms the first limiting part.

[0031] In one embodiment, the second guide rail is configured as a second guide groove, and the second limiting portion includes a limiting groove that communicates with the rear end of the second guide groove and extends rearward.

[0032] In one embodiment, the lifting mechanism further includes a fixed arm mounted in the receiving cavity;

[0033] A first hinge mounting portion and a second hinge mounting portion are formed on the same swing arm. The first hinge mounting portion is mounted on the fixed arm, and the second hinge mounting portion is directly or indirectly mounted on the first section of the slide rail.

[0034] In one embodiment, two swing arms are provided, and the lifting mechanism further includes a connector connected to the first section of the slide rail, with both second hinged mounting parts hinged to the connector.

[0035] In the technical solution of this utility model, by setting the slide rail structure, the user can drive the first shelf to move horizontally, so that the first shelf can enter and exit the receiving cavity of the housing. By setting the swing arm, the user can drive the first shelf to swing forward and upward to the top locking position. At this time, the rear end of the first section of the slide rail is at least partially disposed in the receiving cavity, so that the slide rail assembly is as close as possible to the receiving cavity, so that the first shelf can be close to the receiving cavity, thereby optimizing the position of the first shelf and reducing the space occupied by the first shelf on the front side of the housing. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0037] Figure 1 A schematic diagram of the structure of an embodiment of the household appliance provided by this utility model;

[0038] Figure 2 for Figure 1 A three-dimensional structural diagram including a lifting mechanism, a first shelf, and a second shelf;

[0039] Figure 3 for Figure 1 A top view of the structure including a lifting mechanism, a first shelf, and a second shelf;

[0040] Figure 4 for Figure 1 A schematic diagram of the main structure of the slide rail in the middle;

[0041] Figure 5 for Figure 1 A schematic diagram of the main structure of the locking component in the middle;

[0042] Figure 6 A schematic diagram of another embodiment of the household appliance provided by this utility model;

[0043] Figure 7 for Figure 6 A magnified view of a section at point A in the middle;

[0044] Figure 8 A three-dimensional structural schematic diagram of another embodiment of the household appliance provided by this utility model (the first shelf is located at the bottom storage position, and the swing arm of the lifting mechanism is located at the lower limit position).

[0045] Figure 9 for Figure 8 A three-dimensional structural diagram including a lifting mechanism and a first shelf;

[0046] Figure 10 for Figure 8 The diagram includes a front view of the lifting mechanism and the first shelf.

[0047] Figure 11 for Figure 8 A three-dimensional structural diagram of a household appliance (the first shelf is at the bottom and about to be lifted, and the swing arm of the lifting mechanism is at the lower limit position).

[0048] Figure 12 for Figure 11 The diagram includes a front view of the lifting mechanism and the first shelf.

[0049] Figure 13 for Figure 8 A three-dimensional structural diagram of a household appliance (the first shelf is at the top lifting limit position, and the swing arm of the lifting mechanism is at the upper swing limit position).

[0050] Figure 14 for Figure 13 The diagram includes a front view of the lifting mechanism and the first shelf.

[0051] Figure 15 for Figure 8 A three-dimensional structural diagram of a household appliance (with the first shelf in the top locked position and the swing arm of the lifting mechanism in the upper limit position).

[0052] Figure 16 for Figure 15 The diagram includes a front view of the lifting mechanism and the first shelf.

[0053] Explanation of icon numbers:

[0054] 100. Lifting mechanism; 1. Fixed arm; 2. Swing arm; 21. First hinge mounting part; 22. Second hinge mounting part; 23. First sliding part; 24. Second sliding part; 3. Connecting part; 4. Slide rail structure; 41. First slide rail; 42. Tail slide rail; 43. Intermediate slide rail; 5. Locking part; 5a. Mounting side; 51. First guide rail; 511. First guide groove; 52. Second guide rail; 521. Second guide groove; 53. Stop surface; 54. Limiting groove; 55. Deformation groove; 56. Bracing rib; 6. Clearance area;

[0055] 1000, Household appliance; 200, Housing; 201, Receiving cavity; 2012, Side wall; 300, First shelf; 400, Second shelf.

[0056] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0057] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0058] It should be noted that if the embodiments of this utility model involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0059] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0060] Household appliances, including dishwashers, refrigerators, freezers, and storage cabinets, typically have shelves. Some of these shelves are positioned low, requiring users to bend over to retrieve items. For example, with a dishwasher, if the lower basket isn't raised or lowered, users have to bend over to load or unload dishes, resulting in a poor user experience.

[0061] To address this, some manufacturers have implemented lifting mechanisms to raise low-position shelves to a certain height. However, after raising the shelves, they end up on the front of the appliance's casing, occupying a significant amount of front space.

[0062] Based on this, this utility model proposes a household appliance designed to optimize the spatial layout of the shelf when it is in the raised position, reducing the space occupied by the shelf on the front side of the housing. Among other things, Figures 1 to 15 A schematic diagram of the structure of the household appliance provided by this utility model.

[0063] Please see Figures 1 to 5 In one embodiment of this utility model, the household appliance 1000 includes a housing 200 and a first shelf 300. The housing 200 forms a receiving cavity 201. The first shelf 300 is installed in the receiving cavity 201 via a lifting mechanism 100. The lifting mechanism 100 includes at least one swing arm 2 and a slide rail structure 4. One end of the swing arm 2 is disposed in the receiving cavity 201, and the other end is capable of swinging back and forth and up and down. The slide rail structure 4 includes multiple slide rail sections that are slidably connected to each other. The multiple slide rail sections include at least a first slide rail 41 and a last slide rail 42. The first slide rail 41 is directly or indirectly connected to the other end of the swing arm 2. The tail section slide rail 42 is connected to the first shelf 300. The other end of the swing arm 2 can swing the first shelf 300 forward and upward from the bottom to the top lifting limit position. When the first shelf 300 is at the top lifting limit position, the multi-section slide rail extends forward and backward and can slide relative to each other, so that the first shelf 300 can slide forward to the top locking position. When the first shelf 300 is at the top locking position, the first shelf 300 is located in front of the receiving cavity 201 and is limited. The rear end of the first section slide rail 41 is at least partially inside the receiving cavity 201.

[0064] In the technical solution of this utility model, by setting the slide rail structure 4, the user can drive the first shelf 300 to move horizontally, so that the first shelf 300 can enter and exit the receiving cavity 201 of the housing 200. By setting the swing arm 2, the user can drive the first shelf 300 to swing forward and upward to the top lifting limit position, and continue to slide forward to the top locking position. At this time, the rear end of the first section slide rail 41 is at least partially disposed in the receiving cavity 201, so that the slide rail assembly is as close as possible to the receiving cavity 201, so that the first shelf 300 can be close to the receiving cavity 201, so as to optimize the position of the first shelf 300 and reduce the space occupied by the first shelf 300 in the front side of the housing 200.

[0065] It should be noted that you should refer to [link / reference]. Figure 1 and Figure 8 The household appliance 1000 can be a dishwasher, oven, refrigerator, etc. The household appliance 1000 includes a housing 200, within which a receiving cavity 201 is formed. A first shelf 300 is connected to the receiving cavity 201 via a lifting mechanism 100. Utensils to be placed on the first shelf 300 can be tableware such as bowls, plates, dishes, chopsticks, knives, and forks, as well as baked goods or items to be refrigerated. Specifically, this invention uses the user as a directional reference. "Forward" refers to the direction facing the user, or the direction facing the side of the household appliance 1000 where the door is located; "backward" refers to the direction opposite to "forward," specifically the direction away from the user; and "up and down" refers to the direction with gravity as a reference.

[0066] It should be noted that some household appliances 1000 have only one shelf, such as the first shelf 300. Others may have multiple shelves; in embodiments where multiple shelves are provided in the household appliance 1000, two shelves may be provided, such as the first shelf 300 and the second shelf 400. When the two shelves are positioned vertically, they can be referred to as an upper shelf and a lower shelf. In the description of the embodiments of this utility model, the first shelf 300 corresponds to the lower shelf, and the second shelf 400 corresponds to the upper shelf.

[0067] For the first shelf 300, it is necessary to move the first shelf 300 out of the receiving cavity 201 of the household appliance 1000, then raise it to a suitable position, and finally lock it to a suitable position. Specifically, after the door of the household appliance 1000 is opened, the user needs to put or take out items to be placed in the first shelf 300. The user often pulls the first shelf 300 forward. During the movement of the first shelf 300, a complex movement process will occur, that is, it moves forward and upward at the same time. At this time, the lifting mechanism 100 will follow the movement and support the first shelf 300.

[0068] The first shelf 300 has several important positions during its movement, commonly including a bottom storage position (as shown in the attached image). Figure 8 (As shown), the bottom position to be lifted (as attached) Figure 11 (as shown), the top lifting limit position (as attached) Figure 13 (as shown) and the top locking position (as attached) Figure 15 (As shown)

[0069] Further, please refer to Figures 1 to 4The slide rail structure 4 is configured as a multi-section slide rail. In this invention, the number of slide rails in the slide rail structure 4 is not limited. For example, it can be a two-section slide rail, where the first section is the first slide rail 41 and the second section is the last slide rail 42. It can also be a three-section slide rail, where the first section is the first slide rail 41, the second section is the middle slide rail 43, and the third section is the last slide rail 42. Furthermore, it can be a multi-section slide rail with more than three sections, such as four, five, six, or seven sections, etc. This invention does not limit the number of sections. Specifically, in this embodiment, please refer to... Figures 1 to 4 The slide rail structure 4 further includes an intermediate slide rail 43, which is located between the first slide rail 41 and the last slide rail 42. By providing the intermediate slide rail 43, the sliding stroke of the first shelf 300 is increased, allowing the first shelf 300 to slide completely out of the receiving cavity 201. This prevents interference between the first shelf 300 and other structures within the housing 200, such as the second shelf 400, when the lifting mechanism 100 raises the first shelf 300. Furthermore, the number of intermediate slide rails 43 can be one or more; this invention does not limit this. However, the more intermediate slide rails 43 there are, the more complex the slide rail structure 4 becomes, and the higher the cost. Therefore, in this embodiment, only one intermediate slide rail 43 is provided, which satisfies the travel requirements of the first shelf 300 while reducing the cost of the slide rail structure 4.

[0070] In one embodiment of this utility model, please refer to Figure 6 and Figure 7When the first shelf 300 is in the top locked position, the distance between the rear end face of the first section slide rail 41 and the front end face of the housing 200 is L1, where 10mm≤L1≤25mm. Although the closer the first shelf 300 is to the receiving cavity 201, the less space the first shelf 300 occupies on the front side of the housing 200, the closer the first shelf 300 is to the receiving cavity 201, the easier it is for it to interfere with other structures in the receiving cavity 201, such as the second shelf 400. Therefore, 10mm≤L1≤25mm can both make the first shelf 300 close to the receiving cavity 201 and reduce the probability of the slide rail structure 4 interfering with other structures in the receiving cavity 201. Furthermore, the distance between the rear end face of the first section slide rail 41 and the front end face of the housing 200 can be an integer value of 10mm, or any integer value between 10mm and 25mm, such as 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, etc. Of course, it can also be a value between any two of the above integers, such as 15.1mm, 15.2mm, 15.3mm, 15.4mm, 15.5mm, 15.6mm, 15.7mm, 15.8mm, 15.9mm, etc., between 15mm and 16mm. All of the above values ​​are within the protection scope of this utility model.

[0071] Further, please refer to Figure 7When the first shelf 300 is in the top locked position, the distance between the first section slide rail 41 and an adjacent and opposite side wall 2012 in the receiving cavity 201 is L2, where 20mm≤L2≤40mm. Since the smaller the distance between the first section slide rail 41 and the inner wall of the receiving cavity 201, the smaller the activity space of the swing arm 2, and the easier it is to interfere with the structure inside the receiving cavity 201, while the larger the distance between the first section slide rail 41 and the inner wall of the receiving cavity 201, the easier it is for the slide rail structure 4 to interfere with the second shelf 400, 20mm≤L2≤40mm is convenient for the swing arm 2 to move, and is not easy to interfere with the structure inside the receiving cavity 201 or the second shelf 400. Furthermore, the distance between the rear end face of the first slide rail 41 and the front end face of the housing 200 can be an integer value of 20mm, or any integer value between 20mm and 40mm, such as 25mm, 26mm, 27mm, 28mm, 29mm, 30mm, 31mm, 32mm, 33mm, 34mm, etc. Of course, it can also be a value between any two of the above integers, such as 25.1mm, 25.2mm, 25.3mm, 25.4mm, 25.5mm, 25.6mm, 25.7mm, 25.8mm, 25.9mm, etc., between 25mm and 26mm. All of the above values ​​are within the protection scope of this utility model.

[0072] In view of the above embodiments, users need to use the first shelf 300 and the second shelf 400 alternately. That is, when using the first shelf 300 to lift, the second shelf 400 should be kept in the receiving cavity 201 as much as possible; when using the second shelf 400, the first shelf 300 should be kept in the receiving cavity 201 as much as possible, or the second shelf 400 should not be lifted as much as possible.

[0073] Of course, in some embodiments, for the upper end of the first shelf 300 and the upper end of the second shelf 400, corresponding to the top lifting limit position and the top lifting locking position of the first shelf 300, the upper end of the first shelf 300 protrudes upward beyond the upper end of the second shelf 400, so that the first shelf 300 can be in a higher position.

[0074] In the product corresponding to the household appliance 1000 being a dishwasher, the first shelf 300 corresponds to the lower rack of the dishwasher, and the second shelf 400 corresponds to the upper rack of the dishwasher. When using the lower rack of the dishwasher, the lifting mechanism 100 raises the lower rack of the dishwasher to a position higher than the upper rack. This state provides the same operating height as when the user uses the upper rack of the dishwasher, or a slightly higher height, resulting in a better user experience.

[0075] In one embodiment of this utility model, please refer to Figure 2 and Figure 3 When the first shelf 300 is in the top locked position, the rear end of the first section slide rail 41 is located between one side of the second shelf 400 and the side wall 2012 of the receiving cavity 201, so as to prevent the slide rail structure 4 from interfering with the second shelf 400, so that when the first shelf 300 is in the top locked position, the first section slide rail 41 can be set as close as possible to the receiving cavity 201.

[0076] Furthermore, one side of the second shelf 400 near the head end contracts inward to form a clearance area 6. When the first shelf 300 is in the top locked position, the rear end of the first section slide rail 41 extends into the clearance area 6. Thus, by setting the clearance area 6, interference between the first section slide rail 41 and the head end of the second shelf 400 is avoided, so that when the first shelf 300 is in the top locked position, the first section slide rail 41 can be positioned as close as possible into the receiving cavity 201.

[0077] In one embodiment of this utility model, please refer to Figure 5 The household appliance 1000 further includes a locking member 5, at least one guide rail, and a limiting structure. The locking member 5 is installed on the first shelf 300, and the side of the locking member 5 in the left-right direction is the mounting side 5a. The guide rail is located on the mounting side 5a of the locking member 5. The guide rail has an arc-shaped segment connecting the first end of the guide rail. The arc-shaped segment is used to provide an arc-shaped sliding track for the sliding part of the swing arm 2. The limiting structure is connected to the rear end of the guide rail and is arranged rearward. The limiting structure is used to limit the sliding part on the swing arm 2 when the first shelf 300 moves to the top locking position, so as to restrict the relative movement of the swing arm 2 and the first shelf 300.

[0078] In this embodiment, by connecting the limiting structure to the rear end of the guide rail and positioning it rearward, when the first shelf 300 is raised to its top lifting limit position, simply continue pulling the first shelf 300 forward to allow it to continue moving forward. This allows the sliding part located at the end of the guide rail to slide onto the limiting structure and be limited by it. Throughout the entire lifting and locking process, the user first pulls the first shelf 300 forward to allow it to move forward and lift upward, and then pulls the first shelf 300 forward again to lock it. Throughout the entire process, the user only needs to pull the first shelf 300 forward to complete the lifting and locking, making the operation highly convenient.

[0079] It should be emphasized that the number of the guide rail and the sliding part is not limited; there can be one or more, etc., and no limitation is made here. The specific implementation of the guide rail and the sliding part is not limited. The guide rail can be configured as a guide groove, and the sliding part can be configured as a sliding column, pulley, etc. Alternatively, the guide rail can be configured as a guide rib, and the sliding part can be configured as a sliding groove. For example, the sliding part includes two sliding columns arranged at intervals, and the interval between the two sliding columns constitutes the sliding groove. Alternatively, the sliding part can be directly configured as a sliding protrusion, and then a sliding groove can be opened on it, etc., and no limitation is made here.

[0080] Furthermore, since the first shelf 300 is supported on the swing arm 2 by the locking member 5, the locking member 5 needs to have a certain degree of hardness and strength. Its material can be various; specifically, the locking member 5 can be made of metal alloys such as steel and aluminum alloys, inorganic non-metallic materials such as ceramics, or polymer materials such as plastics. As long as it can support the first shelf 300 under load, this utility model does not impose any limitations. Furthermore, the locking member 5 can have various shapes, such as rectangular or pentagonal, and this utility model does not impose any limitations on its shape.

[0081] The specific implementation of the limiting structure is not limited. It can be in the form of a limiting groove 54, a limiting rib, a limiting surface, etc., and is not limited here.

[0082] One side of the locking member 5 in the left-right direction is the mounting side 5a. The side of the locking member 5 opposite to the mounting side 5a is fixedly installed on the first shelf 300, so that it can move together with the first shelf 300.

[0083] Although the number of guide rails and sliding parts can be one, if only one guide rail and one sliding part are provided, the swing arm 2 and the first shelf 300 are connected by only one sliding part, resulting in poor locking stability during locking. Therefore, in one embodiment of this utility model, the swing arm 2 is provided with a first sliding part 23 and a second sliding part 24, and at least two guide rails are provided, including a first guide rail 51 and a second guide rail 52. The arc segment of the first guide rail 51 is a first arc segment, which is arranged in a backward and downward arc from the first end to the last end of the first guide rail 51. The first guide rail 51 is used to slide with the first sliding part 23 of the swing arm 2, and the second guide rail 52 is located below the first guide rail 51. The arc segment of the guide rail 52 is the second arc segment. The second arc segment is arranged in a backward and upward arc from the first end to the tail end of the second guide rail 52. The second guide rail 52 is used to slide with the second sliding part 24 of the swing arm 2. The limiting structure includes a first limiting part corresponding to the tail end of the first guide rail 51 and a second limiting part corresponding to the tail end of the second guide rail 52. The first limiting part limits the first sliding part 23 of the swing arm 2 vertically, and the second limiting part limits the second sliding part 24 of the swing arm 2 forward and backward.

[0084] It should be noted that the rotation angle of the swing arm 2 is greater than 90° between the bottom to be raised position and the top to be raised limit position. Therefore, at the lower limit position, the swing arm 2 is vertically downward. Correspondingly, when the angle of rotation of the swing arm 2 is greater than 90°, the trajectory of the sliding part should first move upward and then downward. In the technical solution of this embodiment, the central angle of the arc segment of the second guide rail 52 is greater than 90°, so that the second arc segment extends upward and then downward, thereby matching the trajectory of the second guide rail 52 with that of the sliding part, allowing the rotation angle of the swing arm 2 to be greater than 90°, so that the first shelf 300 can be higher than the existing one when it is in the top raised position.

[0085] The first arc segment is arranged in a backward and downward arc from the first end of the first guide rail 51 to the tail end. Correspondingly, during the lifting process, the first sliding part 23 moves downward and the second sliding part 24 moves upward. The two move in different directions, which can guide the movement trajectory of the first shelf 300 during the lifting process and improve its stability during the movement. Furthermore, the first guide rail 51 and the second guide rail 52 are provided. One of the first guide rail 51 can guide the swing arm 2 in the vertical direction, and the other can guide the swing arm 2 in the forward and backward direction, which further improves the stability of the first shelf 300 during the movement.

[0086] Furthermore, the first end of the second guide rail 52 is located below the first end of the first guide rail 51. During the lifting process, the second sliding part 24 of the swing arm 2 contacts the first end of the second guide rail 52 first. Under the action of the second guide rail 52, the swing arm 2 rotates upward, and the first sliding part 23 also rotates upward. During the rotation, the first sliding part 23 moves to contact the first end of the first guide rail 51. Then, the first sliding part 23 moves along the extension direction of the first guide rail 51. Finally, it reaches the top lifting limit position, and the first sliding part 23 and the second sliding part 24 both reach the rear ends of the first guide rail 51 and the second guide rail 52.

[0087] Next, the first shelf 300 moves forward to the top locking position, the first sliding part 23 moves from the first guide rail 51 to the first limiting part and is limited by the first limiting part, and the second sliding part 24 moves from the second guide rail 52 to the second limiting part and is limited by the second limiting part.

[0088] In this embodiment, by providing at least two guide rails and correspondingly at least two sliding parts, and by providing a backward and downward arc from the first end of the first guide rail 51 to the tail end, and a backward and upward arc from the first end of the second guide rail 52 to the tail end, the stability of the first shelf 300 during lifting and locking can be improved.

[0089] Furthermore, the specific implementation of the first guide rail 51 and the second guide rail 52 is not limited. They can both be set as guide grooves, or both as guide ribs, or one of them can be set as a guide rib and the other as a guide groove, etc., which are not limited here.

[0090] Furthermore, the first guide rail 51 is configured as a first guide groove 511, the tail end of the first guide groove 511 passes through the locking member 5 downward to form a lower end slot, and a stop surface 53 is formed at the edge of the lower end slot of the first guide groove 511 and at a rearward position, the stop surface 53 forming the first limiting part.

[0091] In this embodiment, when the lifting mechanism 100 raises the first shelf 300 to the upper limit position, the first sliding part 23 slides along the first guide groove 511 to the stop surface 53 to restrict the swing arm 2 from rotating upward. The outer wall surface of the locking member 5 can form the first limiting part, so there is no need to set the first limiting part separately, which is convenient for production and processing, and can save costs.

[0092] Of course, in other embodiments, the first guide rail 51 may also be configured as a first guide rib. Specifically, the first guide rail 51 includes a first guide rib; the first limiting part includes a limiting boss provided on the locking member 5.

[0093] Correspondingly, at this time, the first sliding part 23 is configured as a groove. For example, the first sliding part 23 includes two sliding pillars arranged at intervals, and the interval between the two sliding pillars constitutes the groove. Alternatively, the sliding part can be directly configured as a sliding protrusion, and then a groove can be opened on it, etc.

[0094] During the process of lifting the first shelf 300, the first sliding part 23 moves on the first guide rib. When the first shelf 300 swings upward to the top lifting limit position and the first shelf 300 moves forward to the top locking position, the first sliding part 23 moves to the bottom of the limiting boss and is limited by the limiting boss.

[0095] The form of the second guide rail 52 is not limited. Specifically, in this embodiment, the second guide rail 52 is configured as a second guide groove 521, and the second limiting part includes a limiting groove 54 that is connected to the rear end of the second guide groove 521 and extends rearward.

[0096] In this embodiment, the first end of the second guide groove 521 passes through the locking member 5, so that when the locking member 5 moves forward with the first shelf 300, the first end of the second guide groove 521 can contact the second sliding part 24, allowing the second sliding part 24 on the swing arm 2 to slide in. Then, the second sliding part 24 moves along the extension direction of the second guide groove 521. After the first shelf 300 moves to the top lifting limit position, the first shelf 300 continues to move forward to the top locking position. The second sliding part 24 moves from the second guide groove 521 into the limiting groove 54, so that the first shelf 300 can be pulled forward and locked. At this time, the limiting groove 54 can limit the second sliding part 24 in the front and back.

[0097] The limiting groove 54 can extend horizontally in the front-to-back direction or be inclined in the vertical direction. There are various ways the limiting groove 54 can extend vertically or inclined in the vertical direction. In one embodiment of this invention, the limiting groove 54 is inclined upwards away from the second guide groove 521. This inclined arrangement allows the second guide groove 521 to smoothly transition to the limiting groove 54, so that when the locking member 5 moves forward, the second sliding part 24 can smoothly slide into the limiting groove 54. Simultaneously, the limiting groove 54 extends upwards to cooperate with the stop surface 53, thereby restricting the vertical movement of the swing arm 2 and the locking member 5, thus achieving forward locking. Of course, in other embodiments, the limiting groove 54 can also extend downwards, etc., and this invention does not limit this.

[0098] In one embodiment of this utility model, at the connection between the limiting groove 54 and the second guide groove 521, a retaining rib 56 is provided on the inner sidewall 2012 of the limiting groove 54. Thus, by providing the retaining rib 56, a damping structure is formed to hold the second sliding part 24 into place, thereby reminding the user that the first shelf 300 has been moved into position, thus improving the user experience. Further, the retaining rib 56 can be one or more, etc., and this utility model does not limit this. Specifically, two retaining ribs 56 are provided, respectively located on opposite sides of the limiting groove 54. Thus, by providing two retaining ribs 56, on the one hand, the passage width of the limiting groove 54 can be further reduced, increasing the interference of the second sliding part 24 and improving the damping feedback force; on the other hand, the sliding trajectory of the second sliding part 24 is kept in the middle of the limiting groove 54, allowing the second sliding part 24 to smoothly slide into the limiting groove 54.

[0099] It is understood that there are various ways to form the retaining rib 56 and the locking member 5. For example, the retaining rib 56 and the locking member 5 can be integrally formed or assembled. This utility model does not limit this.

[0100] Since the locking member 5 needs to support the first shelf 300, it needs to have a certain degree of hardness and strength so that the locking member 5 is not easily deformed, so that the second sliding part 24 is not easy to pass through the retaining rib 56. Therefore, in this embodiment, the mounting side 5a of the locking member 5 is provided with a deformation groove 55 around the limiting groove 54. In this way, by providing the deformation groove 55, the strength of the limiting groove 54 is weakened, so that the limiting groove 54 can deform in its width direction, thereby allowing the second sliding part 24 to slide through the retaining rib 56.

[0101] In one embodiment of this utility model, the deformation groove 55 is arc-shaped. This arc shape surrounds the limiting groove 54 within the deformation groove 55, reducing the strength of the limiting groove 54 and facilitating the sliding of the second sliding part 24. In another embodiment, multiple deformation grooves 55 are provided, spaced apart. This arrangement surrounds the limiting groove 54, reducing the strength around it and allowing the second sliding part 24 to smoothly slide past the retaining rib 56. Furthermore, the spaced-apart arrangement avoids areas where the distance between the limiting groove 54 and the first guide groove 511 is small, thus preventing weakening of the first guide groove 511 and reducing the possibility of the first sliding part 23 sliding out of the first guide groove 511.

[0102] In one embodiment of the present invention, the lifting mechanism 100 further includes a fixed arm 1 installed in the receiving cavity 201, and a first hinge mounting part 21 and a second hinge mounting part 22 are formed on the same swing arm 2. The first hinge mounting part 21 is installed on the fixed arm 1, and the second hinge mounting part 22 is installed on the first section slide rail 41.

[0103] The first hinge mounting part 21 and the second hinge mounting part 22 are mainly designed to enable the swing arm 2 to rotate relative to the fixed arm 1 and also relative to the first shelf 300. The specific configuration of the first hinge mounting part 21 and the second hinge mounting part 22 is not limited; for example, both the first hinge mounting part 21 and the second hinge mounting part 22 can be in the form of holes, or both can be in the form of shafts, or one can be a shaft and the other a hole.

[0104] The second hinge mounting part 22 of the swing arm 2 is used to directly or indirectly hinge to the first shelf 300. In some embodiments, the hinge fitting part may be directly provided on the first shelf 300, and the second hinge mounting part 22 is fitted with the hinge fitting part to achieve hinge; or it may be connected by a connector 3, that is, the swing arm 2 is connected to the connector 3, and the connector 3 is connected to the first shelf 300.

[0105] In this embodiment, by setting the fixed arm 1, the swing arm 2 is installed in the receiving cavity 201. At the same time, by setting the first hinge mounting part 21 and the second hinge mounting part 22, the swing arm 2 can lift the first shelf 300 forward and upward, so that the first shelf 300 can switch between the bottom to be lifted position and the top to be lifted limit position.

[0106] Furthermore, the number of swing arms 2 is not limited; there can be only one or two. In an embodiment where two swing arms 2 are provided, the lifting mechanism 100 partially forms a four-bar linkage, specifically a parallelogram four-bar linkage. In one embodiment of this utility model, two swing arms 2 are provided, and the lifting mechanism 100 further includes a connector 3 connected to the first slide rail 41. Both second hinge mounting parts 22 are hinged to the connector 3. By providing the connector 3, a hinged fitting part can be provided on the connector 3 to connect the swing arm 2 to the first shelf 300, simplifying the structure of the first shelf 300 and facilitating its installation.

[0107] It should be noted that the state of the connecting member 3 remains unchanged throughout the entire operation of the lifting mechanism 100. Thus, the state of the first shelf 300 remains unchanged throughout the entire operation, thereby ensuring good stability for the storage of items.

[0108] Furthermore, the portion of the connector 3 used to connect the first shelf 300 can always be set to a horizontal state, so that the first shelf 300 remains horizontal during operation. It should be noted that the horizontal state can be absolutely horizontal, or it can be at a certain angle to the horizontal direction, such as within a range of 10°.

[0109] The following describes the user's experience using the household appliance 1000, with reference to the first storage rack 300, based on the relevant structure of the household appliance 1000:

[0110] 1. The first shelf 300 is located in the bottom storage position, such as... Figure 8-10 As shown:

[0111] This state indicates that the user is not using the appliance, has just started using it, or has finished using it. In these states, the first shelf 300 is located within the receiving cavity 201 of the household appliance 1000. Figure 8 As can be seen, the first shelf 300 is retracted into the receiving cavity 201. At this time, the swing arm 2 is at the lower limit position, and the sliding part is separated from the guide rail.

[0112] 2. The first shelf 300 is in the bottom position to be lifted, such as... Figure 11-12 As shown:

[0113] This state refers to the user pulling out the first shelf 300 from the receiving cavity 201, or the user lowering the first shelf 300 after using it. In these states, the first shelf 300 is at the opening of the receiving cavity 201, and the swing arm 2 is still at the lower limit position. At this time, the sliding part is in contact with the first end of the guide rail. When multiple guide rails are provided, such as the first guide rail 51 and the second guide rail 52, multiple sliding parts are provided accordingly. The multiple sliding parts include the first sliding part 23 and the second sliding part 24. At this time, the second sliding part 24 is located at the first end of the second guide rail 52. Then, the first shelf 300 continues to move forward and upward.

[0114] 3. The first shelf 300 is at its maximum lifting position at the top, such as... Figure 13-14 As shown:

[0115] This state is when the user raises the first shelf 300, or when the user has finished using the first shelf 300 and has released it from the lock. In these states, the first shelf 300 is at its maximum raised height. Figure 13-14 It can be seen that at this time, the sliding part of the swing arm 2 slides to the rear end of the guide rail, and the swing arm 2 is at the upper swing limit position.

[0116] 4. The first shelf 300 is in the top locked position, such as... Figure 15-16 As shown:

[0117] This state represents a locked state after the user raises the first shelf 300. In this state, the user can retrieve or place items that need to be placed. During these states, the first shelf 300 is at its maximum raised height. Figure 15-16As can be seen, the first shelf 300 has moved forward a certain distance from its position at the top locking position relative to its position at the top lifting limit position. The sliding part of the swing arm 2 slides from the rear end of the guide rail to the limiting structure. The sliding part of the swing arm 2 is limited by the limiting structure. The swing arm 2 is still at the upper swing limit position.

[0118] The following will describe a complete user experience flow, based on the above embodiments:

[0119] When a user needs to use the household appliance 1000, they first open the door of the household appliance 1000. The user then pulls the first shelf 300 forward from the bottom storage position out of the receiving cavity 201 to the bottom lifting position. With the swinging action of the swing arm 2 of the lifting mechanism 100, the user continues to pull the first shelf 300 forward and upward, so that the first shelf 300 moves from the bottom lifting position to the top lifting limit position. The user continues to pull the first shelf 300 forward, and the first shelf 300 moves from the top lifting limit position to the top locking position. In the locked state, the user can take and put items in the first shelf 300 with less bending over.

[0120] When the user finishes retrieving or placing the item, the user pushes the first shelf 300 backward to unlock it and move it from the top unlocked position to the top raised limit position. The user then lowers the first shelf 300, moving it from the top raised limit position to the bottom raised position. The user continues to push the first shelf 300 backward to move it from the bottom raised position to the bottom storage position. When the first shelf 300 is in the bottom storage position, the user can close the door to complete the use of the household appliance 1000.

[0121] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A household appliance, characterized in that, The device includes a housing and a first shelf. The housing forms a receiving cavity, and the first shelf is mounted in the receiving cavity via a lifting mechanism. The lifting mechanism includes: At least one swing arm, one end of which is disposed within the receiving cavity, and the other end which is capable of swinging back and forth and up and down; and, The slide rail structure includes multiple slide rail sections that are mutually telescopically connected. The multiple slide rail sections include at least a first slide rail section and a last slide rail section. The first slide rail section is directly or indirectly connected to the other end of the swing arm, and the last slide rail section is connected to the first shelf. The other end of the swing arm can swing the first shelf forward and upward from the bottom position to the top lifting limit position. When the first shelf is at the top lifting limit position, the multi-section slide rail extends forward and backward and can slide relative to each other so that the first shelf can slide forward to the top locking position. When the first shelf is in the top locking position, the first shelf is located in front of the receiving cavity and is limited, and the rear end of the first slide rail is at least partially inside the receiving cavity.

2. The household appliance as described in claim 1, characterized in that, The slide rail structure also includes an intermediate slide rail, which is located between the first slide rail and the last slide rail.

3. The household appliance as described in claim 1, characterized in that, When the first shelf is in the top locked position, the distance between the rear end face of the first section slide rail and the front end face of the housing is L1, where 10mm≤L1≤25mm.

4. The household appliance as described in claim 1, characterized in that, When the first shelf is in the top locked position, the distance between the first section of the slide rail and an adjacent and opposite side wall in the receiving cavity is L2, where 20mm≤L2≤40mm.

5. The household appliance as described in claim 1, characterized in that, A second shelf is provided inside the receiving cavity. When the first shelf is in the top locking position, the lower end of the slide rail structure is higher than the lower end of the second shelf.

6. The household appliance as described in claim 1 or 5, characterized in that, A second shelf is provided inside the receiving cavity, and corresponding to the top locking position, the lower end of the first shelf protrudes upward from the lower end of the second shelf.

7. The household appliance as described in claim 6, characterized in that, When the first shelf is in the top locked position, the rear end of the first section of the slide rail is located between one side of the second shelf and the side wall of the receiving cavity.

8. The household appliance as described in claim 7, characterized in that, The second shelf tapers inward on one side near the front end to form a clearance area; When the first shelf is in the top locked position, the rear end of the first section of the slide rail extends into the clearance area.

9. The household appliance as described in claim 6, characterized in that, The household appliance includes a dishwasher, wherein the first shelf is configured as a lower dish rack and the second shelf is configured as an upper dish rack.

10. The household appliance as described in claim 1, characterized in that, The household appliances also include: A locking component is installed on the first shelf, with the side of the locking component in the left-right direction being the installation side; At least one guide rail is provided on the mounting side of the locking member, the guide rail having an arc-shaped segment connecting the first end of the guide rail, the arc-shaped segment serving to provide an arc-shaped sliding track for the sliding portion of the swing arm; and, A limiting structure is connected to the tail end of the guide rail and is arranged rearward. The limiting structure is used to limit the sliding part on the swing arm when the first shelf moves to the top locking position, so as to restrict the relative movement of the swing arm and the first shelf.

11. The household appliance as described in claim 10, characterized in that, The swing arm is provided with a first sliding part and a second sliding part; The guide rail is provided in at least two parts, and the two guide rails include: A first guide rail, wherein the first guide rail has an arc-shaped segment that curves backward and downward from its first end to its last end, and the first guide rail is used to slide in conjunction with the first sliding part of the swing arm; and, The second guide rail is located below the first guide rail. The arc segment of the second guide rail is the second arc segment. The second arc segment is arranged in a backward and upward arc from the first end to the last end of the second guide rail. The second guide rail is used to slide with the second sliding part of the swing arm. The limiting structure includes a first limiting part provided at the tail end of the first guide rail and a second limiting part provided at the tail end of the second guide rail. The first limiting part limits the first sliding part of the swing arm vertically, and the second limiting part limits the second sliding part of the swing arm forward and backward.

12. The household appliance as described in claim 11, characterized in that, The first guide rail is configured as a first guide groove, and the tail end of the first guide groove passes downward through the locking member to form a lower end slot. A stop surface is formed at the lower end of the first guide groove, near the rear, and the stop surface forms the first limiting part.

13. The household appliance as described in claim 12, characterized in that, The second guide rail is configured as a second guide groove, and the second limiting part includes a limiting groove that is connected to the tail end of the second guide groove and extends rearward.

14. The household appliance as described in claim 1, characterized in that, The lifting mechanism also includes a fixed arm installed in the receiving cavity; A first hinge mounting portion and a second hinge mounting portion are formed on the same swing arm. The first hinge mounting portion is mounted on the fixed arm, and the second hinge mounting portion is mounted on the first section of the slide rail.

15. The household appliance as described in claim 14, characterized in that, Two swing arms are provided, and the lifting mechanism also includes a connector connected to the first section of the slide rail, with both second hinged mounting parts hinged to the connector.

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