Locking element, lifting mechanism and household appliance

Abstract

The utility model discloses a locking piece, lifting mechanism and household appliance relates to household appliance technical field, wherein, locking piece is used on the lifting mechanism of household appliance, set up on the first storage rack, with swing arm cooperation, with when the first storage rack moves to the top locking position, limit swing arm and the relative activity between the first storage rack, locking piece includes lock body, first guide rail, first limiting portion and contact portion, and the side of lock body in left and right direction is installation side, and first guide rail is established in the installation side of lock body, and first guide rail includes the first arc section of connecting first guide rail head, and first limiting portion sets up corresponding the tail end of first guide rail, and when first sliding portion moves to first limiting portion, first limiting portion carries out the location to first sliding portion, and contact portion sets up corresponding the tail end of first guide rail, with when first sliding portion moves to approach first limiting portion or reaches first limiting portion, contact portion and first sliding portion touch contact.

Description

[0001] This application claims priority to two Chinese patent applications filed on April 30, 2024, with application number 202420943998.8 and entitled "Lifting Mechanism and Dishwasher" and filed on September 30, 2024, with application number 202422413198.8 and entitled "Locking Member, Lifting Mechanism and Household Appliance", 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 locking component, a lifting mechanism, and 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 installed lifting mechanisms to raise and lower low-position shelves to a certain height. However, after the lifting mechanism raises the shelf to its position, the user still needs to pull the shelf to the locked position. But the user can only judge the position of the shelf by whether or not the shelf can be pulled, and cannot determine the position of the shelf. Utility Model Content

[0005] The main purpose of this utility model is to provide a locking component, a lifting mechanism, and a household appliance, which aims to solve the problem that it is impossible to determine whether the shelf has moved into position when the lifting mechanism raises the shelf.

[0006] To achieve the above objectives, the present invention proposes a locking component for use in the lifting mechanism of a household appliance. It is installed on a first shelf and cooperates with a swing arm to restrict relative movement between the swing arm and the first shelf when the swing arm swings the first shelf upwards to its maximum lifting position and the first shelf moves to its top locking position. The locking component includes: The lock body has its mounting side on the left-right side; A first guide rail is provided on the mounting side of the lock body. The first guide rail includes a first arc-shaped segment connecting the first end of the first guide rail. The first arc-shaped segment is used to provide a sliding arc-shaped track for the first sliding part of the swing arm. A first limiting part is provided corresponding to the tail end of the first guide rail. When the first sliding part moves to the first limiting part, the first limiting part limits the first sliding part; and... A contact portion is provided corresponding to the tail end of the first guide rail, so that when the first sliding portion moves to approach or reach the first limiting portion, the contact portion contacts the first sliding portion.

[0007] In one embodiment, a limiting rail is provided at the tail end of the first guide rail. The first guide rail is used to guide the first sliding part to slide to the limiting rail, and the limiting rail is used to limit the first sliding part. The contact part is disposed at the junction of the first guide rail and the limiting rail, or the contact part is disposed on the limiting rail.

[0008] In one embodiment, the first guide rail is configured as a first guide groove; The limiting rail includes a limiting groove that communicates with the tail end of the first guide groove; The contact portion is a protrusion disposed on the inner wall of the first guide groove or the limiting groove.

[0009] In one embodiment, the protrusion includes a retaining rib disposed on the inner sidewall of the first guide groove or the limiting groove.

[0010] In one embodiment, the mounting side of the lock body is provided with a deformation groove around the limiting groove.

[0011] In one embodiment, the locking member further includes a second guide rail disposed on the mounting side of the lock body. The second guide rail includes a second arc-shaped segment connecting the first end of the second guide rail. The second arc-shaped segment is arranged in a rearward and downward arc shape from the first end to the tail end of the second guide rail, so as to provide a sliding arc-shaped track for the second sliding part of the swing arm. The first arc segment is arranged in an arc shape extending backward and upward from the first end to the last end of the first guide rail, and the first guide rail is located below the second guide rail; The locking component further includes a second limiting part provided at the tail end corresponding to the second guide rail. The first limiting part is used to limit the first sliding part of the swing arm in the front and back, and the second limiting part is used to limit the second sliding part of the swing arm in the upper and lower.

[0012] In one embodiment, the second guide rail is configured as a second guide groove, the tail end of the second guide groove extends downward through the lock body to form a lower end slot, and a stop surface is formed at the periphery of the lower end slot and at a rear position, the stop surface forming the second limiting part.

[0013] This utility model also proposes a lifting mechanism for lifting a first shelf of a household appliance, enabling the first shelf to switch between a bottom position to be lifted and a top position to be lifted to its maximum height. The lifting mechanism includes: A fixed arm for mounting in the receiving cavity of the household appliance; A swing arm assembly includes at least a first swing arm, on which a first hinge mounting portion and a second hinge mounting portion are formed. The first hinge mounting portion is mounted to the fixed arm, and the second hinge mounting portion is used for direct or indirect mounting to the first shelf. The first swing arm also has a first sliding portion. A locking element, the locking element including the locking element described above.

[0014] In one embodiment, the lifting mechanism further includes a slide rail structure, the slide rail structure including multiple slide rails that are slidably connected to each other, the multiple slide rails including at least a first slide rail and a last slide rail, the first slide rail being directly or indirectly connected to the second hinged mounting part, and the last slide rail being connected to the first shelf; 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 to the top locking position.

[0015] 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. The second hinged mounting portions of both swing arms are hinged to the connector, and the connector is mounted on the first shelf.

[0016] In addition, this utility model also proposes a household appliance, comprising: The shell has a receiving cavity; A lifting mechanism, including the aforementioned lifting mechanism, wherein the fixed arm of the lifting mechanism is disposed on the side wall of the receiving cavity; and, The first shelf is hinged to the swing arm of the lifting mechanism; The lifting mechanism allows the first shelf to switch between the bottom position to be lifted and the top position to be lifted to its maximum height.

[0017] In one embodiment, a second shelf is provided in the receiving cavity, and corresponding to the top lifting limit position, the lower end of the first shelf is higher than the lower end of the second shelf.

[0018] 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.

[0019] In the technical solution of this utility model, by setting the first limiting part at the tail end of the first guide rail, when the lifting mechanism raises the first shelf to the top lifting limit position, it is only necessary to continue driving the first shelf to move, so that the first sliding part located at the tail end of the first guide rail slides past the contact part and then slides into the first limiting part, so that the first limiting part can restrict the movement of the first sliding part. At the same time, during the lifting and locking process of the first shelf, the user first pulls the first shelf forward to move the first shelf forward and lift it upward, and then continues to pull the first shelf forward so that the first sliding part slides into the first limiting part after passing the contact part, thus confirming that the first shelf is locked in place. Throughout the entire process, the user only needs to drive the first shelf to move, which can complete the lifting and locking of the first shelf and also confirm that the first shelf is in place. The operation is simple and the user experience is good. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the household appliance proposed in this utility model; Figure 2 for Figure 1 A schematic diagram of the structure of the locking element in the first embodiment; Figure 3 for Figure 1 A schematic diagram of the second embodiment of the locking element; Figure 4 for Figure 1 A schematic diagram of the third embodiment of the locking element; Figure 5 for Figure 1 A schematic diagram of the third embodiment of the locking element; Figure 6 A three-dimensional structural schematic diagram of an 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); Figure 7 for Figure 6 A three-dimensional structural diagram including a lifting mechanism and a first shelf; Figure 8 for Figure 6The diagram includes a front view of the lifting mechanism and the first shelf. Figure 9 for Figure 6 A three-dimensional structural diagram of a household appliance (the first shelf is at the bottom and ready to be lifted, and the swing arm of the lifting mechanism is at the lower limit position). Figure 10 for Figure 9 The diagram includes a front view of the lifting mechanism and the first shelf. Figure 11 for Figure 6 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). Figure 12 for Figure 11 The diagram includes a front view of the lifting mechanism and the first shelf. Figure 13 for Figure 6 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); Figure 14 for Figure 13 The diagram includes a front view of the lifting mechanism and the first shelf.

[0022] Explanation of icon numbers: 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. Locking component; 31. Lock body; 311. Mounting side; 32. First guide rail; 321. First guide groove; 322. First guide rib; 33. Second guide rail; 331. Second guide groove; 332. Second guide rib; 34. Limiting rail; 341. Limiting groove; 35. Second limiting part; 351. Stop surface; 36. Contact part; 361. Locking rib; 37. Deformation groove; 4. Connectors; 5. Slide rail structure; 51. First slide rail; 52. Last slide rail; 53. Intermediate slide rail; 1000, Household appliance; 200, Housing; 201, Receiving cavity; 2012, Side wall; 300, First shelf; 400, Second shelf.

[0023] 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

[0024] 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.

[0025] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0026] 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.

[0027] 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.

[0028] To address this, some manufacturers have implemented lifting mechanisms to raise and lower low-position shelves to a certain height. However, after the lifting mechanism raises the shelf to its position, the user still needs to pull the shelf to the locked position. The user can only judge the position by whether the shelf can be pulled. If the shelf does not move, it is considered that the shelf has moved to the correct position. However, this method cannot accurately determine the position of the shelf.

[0029] Based on this, this utility model proposes a locking component for a lifting mechanism, aiming to solve the problem of not being able to determine whether the shelf has moved into position when the lifting mechanism raises the shelf. Specifically, Figures 1 to 13 A schematic diagram of the structure of the household appliance provided by this utility model.

[0030] Please see Figures 1 to 5 In one embodiment of this utility model, the locking member 3 is used on the lifting mechanism 100 of a household appliance 1000, and is disposed on the first shelf 300 to cooperate with the swing arm 2. When the swing arm 2 swings the first shelf 300 upward to its top lifting limit position and the first shelf 300 moves to its top locking position, the relative movement between the swing arm 2 and the first shelf 300 is restricted. The locking member 3 includes a lock body 31, a first guide rail 32, a first limiting part, and a contact part 36. The side of the lock body 31 located in the left-right direction is the mounting side 311, and the first guide rail 32 is disposed on the mounting side 311 of the lock body 31. 11. The first guide rail 32 includes a first arc-shaped segment connecting the first end of the first guide rail 32. The first arc-shaped segment is used to provide a sliding arc-shaped track for the first sliding part 23 of the swing arm 2. The first limiting part is provided corresponding to the tail end of the first guide rail 32. When the first sliding part 23 moves to the first limiting part, the first limiting part limits the first sliding part 23. The contact part 36 is provided corresponding to the tail end of the first guide rail 32. When the first sliding part 23 moves close to or reaches the first limiting part, the contact part 36 contacts the first sliding part 23.

[0031] In the technical solution of this utility model, by setting the first limiting part at the tail end of the first guide rail 32, when the lifting mechanism 100 raises the first shelf 300 to the top lifting limit position, it is only necessary to continue driving the first shelf 300 to move, allowing the first sliding part 23 located at the tail end of the first guide rail 32 to slide past the contact part 36 and then slide into the first limiting part, so that the first limiting part can restrict the movement of the first sliding part 23. At the same time, during the lifting and locking process of the first shelf 300, the user... First, pull the first shelf 300 forward to move it forward and lift it upward. Then, continue to drive the first shelf 300 to move it, so that the first sliding part 23 slides into the first limiting part after passing the contact part 36. This will lock the first shelf 300 in place. Throughout the process, the user only needs to drive the first shelf 300 to move it, which can both lift and lock the first shelf 300 and ensure that the first shelf 300 is in place. The operation is simple and provides a good user experience.

[0032] It should be noted that one side of the lock body 31 in the left-right direction is the mounting side 311. The side of the lock body 31 opposite to the mounting side 311 is fixedly mounted on the first shelf 300, so that it can move together with the first shelf 300. Furthermore, since the first shelf 300 is supported by the swing arm 2 through the lock body 31, the locking component 3 needs to have a certain degree of hardness and strength. Its material can be various; specifically, the lock body 31 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. In particular, the... It should also be noted that 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, or 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 side of the household appliance 1000 with a door; "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.

[0033] Furthermore, some household appliances 1000 have only one shelf, such as the first shelf 300. Others 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 upper shelf, and the second shelf 400 corresponds to the lower shelf.

[0034] 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.

[0035] The first shelf 300 has several important positions during its movement, commonly including a bottom storage position (as shown in the attached image). Figure 6 (As shown), the bottom position to be lifted (as attached) Figure 9 (As shown), the top lifting limit position (as attached) Figure 11 (as shown) and the top locking position (as attached) Figure 13 (As shown).

[0036] When the first shelf 300 has four positions, namely the bottom storage position, the bottom lifting position, the top lifting limit position, and the top locking position, when the swing arm 2 is in the lower limit position, the corresponding first shelf 300 is in the bottom storage position and the bottom lifting position; when the swing arm 2 is in the upper limit position, the corresponding first shelf 300 is in the top lifting limit position and the top locking position.

[0037] In one embodiment of this utility model, a limiting rail 34 is provided at the tail end of the first guide rail 32. The first guide rail 32 is used to guide the first sliding part 23 to slide to the limiting rail 34. The limiting rail 34 is used to limit the first sliding part 23. The contact part 36 is provided at the junction of the first guide rail 32 and the limiting rail 34, or the contact part 36 is provided on the limiting rail 34. In this way, by providing the limiting rail 34, the first sliding part 23 is limited, and by providing the contact part 36, it is possible to determine whether the first sliding part 23 has moved into place.

[0038] It should be noted that there are multiple ways to limit the first sliding part 23. In other embodiments, the first guide rail 32 is provided with a telescopically movable limiting protrusion, and correspondingly, the sliding part is provided with a mating groove. The telescopic movement of the limiting protrusion facilitates the sliding of the first sliding part 23 and also allows it to be limited by the mating groove. Furthermore, the contact part 36 is disposed at the junction of the first guide rail 32 and the limiting rail 34, or the contact part 36 is disposed on the limiting rail 34, to ensure that the first sliding part 23 slides into the first limiting part, thereby ensuring that the first shelf 300 is locked in place.

[0039] In one embodiment of this utility model, please refer to Figure 2 and Figure 3The first guide rail 32 is configured as a first guide groove 321, which extends forward through the lock body 31. This allows the first sliding part 23 to slide directly into the first guide groove 321 from the front end of the lock body 31 when the first shelf 300 moves forward, facilitating its entry. Furthermore, the front end of the first guide groove 321 is flared, providing a larger opening to guide the first sliding part 23 into the first guide groove 321. It is understood that the position of the first end of the first guide groove 321 can vary. In other embodiments, the first end of the first guide groove 321 extends through the front end of the lock body 31; this invention does not limit this.

[0040] It should be noted that the specific implementation of the first guide rail 32 and the first sliding part 23 is not limited. The first guide rail 32 can be configured as a guide groove, and the first sliding part 23 can be configured as a sliding column, pulley, etc. Alternatively, the first guide rail 32 can be configured as a guide rib, and the first sliding part 23 can be configured as a sliding groove. For example, the first sliding part 23 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. There is no limitation here.

[0041] In one embodiment, the limiting rail 34 includes a limiting groove 421 communicating with the tail end of the first guide groove 321. The contact part 36 is a protrusion provided on the inner wall of the first guide groove 321 or the limiting groove 421. Thus, the limiting rail 34 is configured as the limiting groove 421 to fit with the first guide groove 321, so that the first sliding part 23 can slide into the limiting groove 421 to limit the first sliding part 23. At the same time, by providing the protrusion, the width of the limiting groove 421 is reduced so that the protrusion can engage with the first sliding part 23, thereby allowing the user to determine the position of the first sliding part 23.

[0042] Furthermore, the protrusion can be of various types. The protrusion can be a ball bearing protruding from the first guide groove 321, or a rib protruding from the first guide groove 321, etc. This utility model does not limit the type of protrusion. Specifically, in this embodiment, the protrusion includes a retaining rib 361 disposed on the inner side wall of the first guide groove 321 or the limiting groove 421. In this way, by setting the retaining rib 361, a damping structure is formed to hold the movement of the second sliding part 24, so as to remind the user that the first shelf 300 has moved into place, thereby helping to improve the user experience. Furthermore, the locking rib 361 can be one or more, and this utility model does not limit this. Specifically, two locking ribs 361 are provided, and the two locking ribs 361 are respectively provided on opposite sides of the limiting groove 421. In this way, by providing two locking ribs 361, on the one hand, the passage width of the limiting groove 421 can be further reduced, the interference of the second sliding part 24 can be increased, and the damping feedback force can be improved. On the other hand, the sliding trajectory of the second sliding part 24 is kept in the middle of the limiting groove 421, so that the second sliding part 24 can smoothly slide into the limiting groove 421.

[0043] It is understood that the shape of the retaining rib 361 can be various, such as circular, square, or spherical, etc. This utility model does not limit this. Furthermore, the material of the retaining rib 361 can be various, such as the same material as the lock body 31 or a different material. This utility model does not limit this. Specifically, in this embodiment, the material of the retaining rib 361 is the same as the material of the lock body 31, so that the retaining rib 361 can be integrally formed with the lock body 31.

[0044] Since the lock body 31 needs to support the first shelf 300, it needs to have a certain degree of hardness and strength to prevent the lock body 31 from deforming and the first sliding part 23 from passing through the retaining rib 361. Therefore, in this embodiment, the mounting side 311 of the lock body 31 is provided with a deformation groove 37 around the limiting groove 421. In this way, by providing the deformation groove 37, the strength of the limiting groove 421 is weakened, so that the limiting groove 421 can deform in its width direction, thereby allowing the first sliding part 23 to slide through the retaining rib 361.

[0045] Furthermore, the deformation groove 37 is arc-shaped. This arc shape surrounds the limiting groove 421 within the deformation groove 37, reducing the strength of the limiting groove 421 and facilitating the sliding of the first sliding part 23. In another embodiment, multiple deformation grooves 37 are provided, spaced apart. By providing multiple deformation grooves 37, the limiting groove 421 is surrounded within the deformation groove 37, reducing the strength around the limiting groove 421 and allowing the first sliding part 23 to smoothly slide past the retaining rib 361. Simultaneously, the spaced-apart deformation grooves 37 avoid areas where the distance between the limiting groove 421 and the second guide rail 33 is small, thus preventing weakening of the second guide rail 33 and reducing the possibility of the second sliding part 24 sliding off the second guide rail 33.

[0046] Since the distance between the deformation groove 37 and the limiting groove 421 is related to the degree of deformation of the limiting groove 421, the farther the deformation groove 37 is from the limiting groove 421, the less likely the limiting groove 421 is to deform. However, if the distance between the deformation groove 37 and the limiting groove 421 is too small, the difficulty of setting it will be higher. Therefore, in this embodiment, the distance between the deformation groove 37 and the first guide groove 321 is L1, where 0.5mm≤L1≤1.5mm. This can both weaken the strength of the limiting groove 421, making it easier for the limiting groove 421 to deform, and facilitate the setting of the deformation groove 37, making it easier to manufacture.

[0047] It should be noted that the distance between the deformation groove 37 and the first guide groove 321 refers to the distance between two adjacent sidewalls 2012 of the deformation groove 37 and the first guide groove 321. Further, the distance between the deformation groove 37 and the limiting groove 421 can be any value between 0.5mm and 1.5mm, such as 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, etc., all of which are within the protection scope of this utility model.

[0048] In one embodiment of this utility model, the width of the deformation groove 37 is L2, where 1mm ≤ L2 ≤ 2mm. Since a wider deformation groove 37 facilitates deformation of the limiting groove 421, an excessively wide deformation groove 37 may weaken the strength of the second guide rail 33, thus affecting its guiding function. Therefore, 1mm ≤ L2 ≤ 2mm facilitates deformation of the limiting groove 421 while avoiding interference with the first guide groove 321. Furthermore, the width of the deformation groove 37 can be any value between 1mm and 2mm, such as 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, etc., all of which are within the protection scope of this utility model.

[0049] In one embodiment of the present invention, the locking member 3 further includes a second guide rail 33 disposed on the mounting side 311 of the lock body 31. The second guide rail 33 includes a second arc-shaped segment connecting the first end of the second guide rail 33. The second arc-shaped segment is arranged in a rearward and downward arc shape from the first end to the tail end of the second guide rail 33 to provide a sliding arc-shaped track for the second sliding part 24 of the swing arm 2. The first arc-shaped segment is arranged in a rearward and upward arc shape from the first end to the tail end of the first guide rail. The first guide rail 32 is located on the lower side of the second guide rail 33. The locking member 3 further includes a second limiting part 35 disposed corresponding to the tail end of the second guide rail 33. The first limiting part is used to limit the first sliding part 23 of the swing arm 2 in the front and rear directions, and the second limiting part 35 is used to limit the second sliding part 24 of the swing arm 2 in the upper and lower directions.

[0050] 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 first sliding part 23 should be to move upward first and then downward. In the technical solution of this embodiment, the central angle of the first arc segment is greater than 90°, so that the first arc segment extends upward first and then downward, thereby matching the trajectory of the second guide rail 33 with 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.

[0051] The second arc segment of the second guide rail 33 is arranged in a backward and downward arc shape from the first end to the last end. Correspondingly, during the lifting process, the first sliding part 23 moves upward and the second sliding part 24 moves downward. 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 32 and the second guide rail 33 are provided. One of the first guide rail 32 and the second guide rail 33 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.

[0052] Furthermore, the first guide rail 32 is located below the second guide rail 33. During the lifting process, the first sliding part 23 of the swing arm 2 contacts the front end of the first guide rail 32 first. Under the action of the first guide rail 32, the swing arm 2 rotates upward, and the first sliding part 23 also rotates upward. During the rotation, the second sliding part 24 moves to contact the front end of the second guide rail 33. Then, the second sliding part 24 moves along the extension direction of the second guide rail 33. Finally, it reaches the top lifting limit position, and both the first sliding part 23 and the second sliding part 24 reach the rear end of the first guide rail 32 and the second guide rail 33.

[0053] Next, the first shelf 300 moves to the top locking position, the first sliding part 23 moves from the first guide rail 32 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 33 to the second limiting part 35 and is limited by the second limiting part 35.

[0054] In the technical solution of this embodiment, the first arc segment is arranged in an arc shape extending backward and upward from the first end to the last end of the first guide rail 32, and the second arc segment is arranged in an arc shape extending backward and downward from the first end to the last end of the second guide rail 33, so as to guide the first sliding part 23 and the second sliding part 24 to slide respectively, thereby improving the stability of the first shelf 300 when it is lifted and locked.

[0055] Furthermore, the second guide rail 33 is configured as a second guide groove 331, the tail end of which penetrates downward through the lock body 31 to form a lower end slot. A stop surface 351 is formed around the periphery of the lower end slot at a rearward position. The stop surface 351 forms the second limiting part 35. Thus, when the first shelf 300 moves forward, the second sliding part 24 first slides from the front end of the lock body 31 into the second guide groove 331, and continues to slide along the second guide groove 331 to the rear end of the second guide groove 331 to abut against the stop surface 351, thereby restricting the upward rotation of the second sliding part 24. Furthermore, the front end of the second guide groove 331 is flared, thus using a larger opening to facilitate guiding the second sliding part 24 into the second guide groove 331. It is understood that the stop surface 351 can be set in various ways, such as a plane or an arc surface. This utility model does not limit this. Specifically, the stop surface 351 is arc-shaped so that the second sliding part 24 can stay on the stop surface 351, thereby reducing the probability that the second sliding part 24 will slide off the stop surface 351.

[0056] In one embodiment of this utility model, the first guide rail 32 includes a first guide groove 321, the front end of which passes through the lock body 31 to allow the first sliding part 23 on the swing arm 2 to slide into it. The first limiting part includes a limiting groove 421 that communicates with the rear end of the first guide groove 321. Thus, when the first shelf 300 moves forward, the first sliding part 23 can slide directly from the front end of the lock body 31 into the first guide groove 321, thereby facilitating the sliding part 23 to slide into the first guide groove 321. At the same time, by providing the limiting groove 421 to match the first guide groove 321, the first sliding part 23 can slide into the limiting groove 421 to limit the first sliding part 23. Furthermore, the limiting groove 421 extends rearward. Thus, by providing the rearward-extending limiting groove 351, throughout the entire lifting and locking process, the user only needs to pull the first shelf 300 forward to complete the lifting and locking of the first shelf 300. This allows the first shelf 300 to achieve forward-pulling locking, aligning with the direction of movement of the first shelf 300 and facilitating user operation. Of course, in another embodiment, the first shelf 300 can also employ a backward-moving locking mechanism. That is, after the first shelf 300 moves to the rear end of the second guide groove 331, pushing the first shelf 300 backward locks it. However, this method is opposite to the direction of movement of the first shelf, resulting in a poorer user experience.

[0057] The limiting groove 421 can extend in various ways in the vertical direction. For example, the limiting groove 421 can extend vertically upward or extend obliquely upward. In one embodiment of this utility model, the limiting groove 421 is obliquely arranged upward away from the first guide groove 321. This oblique arrangement allows the first guide groove 321 to smoothly transition to the limiting groove 421, so that when the locking member 3 moves forward, the first sliding part 23 can smoothly slide into the limiting groove 421 to limit the forward and backward movement of the first sliding part 23. At the same time, the limiting groove 421 extends upward to cooperate with the stop surface 351 to restrict the vertical movement of the swing arm 2 and the locking member 3, thereby achieving forward locking. Of course, in other embodiments, the limiting groove 421 can also extend downward, etc., and this utility model does not limit it in this way.

[0058] Furthermore, if the inclination angle of the limiting groove 42142 is small, it is not easy to limit the second sliding part 2424. If the inclination angle of the limiting groove 42142 is large, it is not easy for the second sliding part 2424 to slide into the limiting groove 42142. Therefore, in this embodiment, the angle between the limiting groove 42142 and the front-back direction is α, where 15°≤α≤60°. This facilitates the second sliding part 2424 to slide into the limiting groove 42142 and also limits the second sliding part 2424 to prevent the swing arm 22 and the locking member 33 from moving relative to each other in the front-back direction. It is understood that the included angle α between the limiting groove 42142 and the front-back direction can be an integer value of 60°, or any integer value between 15° and 60°, such as 30°, 40°, 50°, etc. Of course, it can also be an angle value between any two of the above integers, such as degrees between 50° and 60°, such as 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, etc. Of course, it can also be some decimal degree values. All of the above values ​​are within the protection scope of this utility model.

[0059] To achieve the above objectives, this utility model also proposes a lifting mechanism 100 for lifting a first shelf 300 of a household appliance 1000, enabling the first shelf 300 to switch between a bottom lifting position and a top lifting limit position. The lifting mechanism 100 includes a fixed arm 1, a swing arm 2 assembly, and a locking member 3. The fixed arm 1 is installed in the receiving cavity 201 of the household appliance 1000. A first hinge mounting portion 21 and a second hinge mounting portion 22 are formed on the same swing arm 2. The first hinge mounting portion 21 is installed on the fixed arm 1, and the second hinge mounting portion 22 is directly or indirectly installed on the first shelf 300. The locking member 3 includes the aforementioned locking member 3. The locking member 3 is disposed on the first shelf 300 to restrict the relative movement between the swing arm 2 and the first shelf 300 when the swing arm 2 swings the first shelf 300 upward to the top locking position. Thus, by setting the first limiting portion with the first guide rail 3... At the end of section 2, when the lifting mechanism 100 raises the first shelf 300 to its top lifting limit position, the user only needs to continue pulling the first shelf 300 forward. This allows the first sliding part 23, located at the rear end of the first guide rail 32, to slide past the contact part 36 and into the first limiting part, thus restricting the movement of the first sliding part 23. Simultaneously, during the lifting and locking process of the first shelf 300, the user first pulls the first shelf 300 forward, allowing it to move forward and rise. Then, the user continues to pull the first shelf 300 forward, causing the first sliding part 23 to slide into the first limiting part after passing the contact part 36. This confirms that the first shelf 300 is locked in place. Throughout the entire process, the user only needs to pull the first shelf 300 forward to complete both the lifting and locking of the first shelf 300, and to confirm that the first shelf 300 is in place. This method is simple to operate and provides a good user experience.

[0060] It should be noted that the specific structure of the locking member 3 is as described in the above embodiments. Since the lifting mechanism 100 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0061] In some embodiments, please refer to Figure 1 and Figure 12The lifting mechanism 100 further includes a slide rail structure 5. The slide rail structure includes multiple slide rail sections that are slidably connected to each other. The multiple slide rail sections include at least a first slide rail 51 and a last slide rail 52. The first slide rail 51 is directly or indirectly connected to the second hinge mounting part 22. The last slide rail 52 is connected to the first shelf 300. The swing arm 2 can swing the first shelf 300 forward and upward from the bottom position to the top lifting limit position. When the first shelf 300 is at the top lifting limit position, the multiple slide rail sections extend forward and backward and can slide relative to each other, so that the first shelf 300 can slide to the top locking position, so that the first shelf 300 can switch between the bottom storage position and the bottom position to be lifted. The positional relationship of the first shelf 300 can be adjusted by the extension and retraction of the multiple slide rail sections. In this way, the first shelf 300 can be moved to the bottom storage position and stored in the receiving cavity 201.

[0062] It should be noted that the connector 4 is connected to the first section slide rail 51 by means of adhesive bonding or welding. That is, the connector 4 can be glued to the first section slide rail 51; of course, it can also be welded. For example, if both the connector 4 and the first section slide rail 51 are made of metal, such as iron or steel, the connector 4 can be welded to the first section slide rail 51.

[0063] In some embodiments, the connector 4 and the first slide rail 51 are integrally formed, that is, the connector 4 and the first slide rail 51 are a single component, which reduces the number of parts and saves assembly time and cost.

[0064] The tail section slide rail 52 is connected to the first shelf 300. The first shelf 300 can usually be formed by alternating small round ribs in the horizontal or vertical direction. For connecting the slide rail, a connecting block can be used to assist the connection. The connecting block is provided with some slots and other mechanisms to hold the small round ribs on the first shelf 300. The connecting block is also provided with a screw connection structure, through which the tail section slide rail 52 is directly connected, thus making the connection more secure.

[0065] Furthermore, this utility model does not limit the number of slide rails in the slide rail structure 5. For example, it can be a two-section slide rail, in which the first section is the first slide rail 5151 and the second section is the last slide rail 5252; it can also be a three-section slide rail, in which the first section is the first slide rail 5151, the second section is the middle slide rail 5353 and the third section is the last slide rail 5252; it can also be a multi-section slide rail with more than three sections, such as four, five, six, seven sections, etc. This utility model does not limit this. Specifically, in this embodiment, the slide rail structure 5 further includes an intermediate slide rail 53, which is disposed between the first slide rail 51 and the last slide rail 52. By providing the intermediate slide rail 53, 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 53 can be one or more; this invention does not limit this. However, the more intermediate slide rails 53 there are, the more complex the slide rail structure 5 becomes, and the higher the cost. Therefore, in this embodiment, only one intermediate slide rail 53 is provided, which satisfies the travel requirements of the first shelf 300 while reducing the cost of the slide rail structure 5.

[0066] In one embodiment of this utility model, the number of swing arms 2 is not limited; there can be only one or two. In the embodiment where two swing arms 2 are provided, the lifting mechanism 100 partially forms a four-bar linkage, specifically a parallelogram four-bar linkage. Please refer to [link to embodiment of this utility model]. Figure 7 , Figure 8 , Figure 10 and Figure 12 Two swing arms 2 are provided. The lifting mechanism 100 also includes a connector 4 connected to the first section slide rail 51. Both second hinge mounting parts 22 are hinged to the connector 4. By providing the connector 4, a hinge mating part can be provided on the connector 4 so as to connect the swing arm 2 to the first shelf 300, which can simplify the structure of the first shelf 300 and facilitate the installation of the first shelf 300.

[0067] It should be noted that the state of the connecting member 4 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.

[0068] The specific implementation of the first guide rail 32 and the first sliding part 23 is not limited. The first guide rail 32 can be configured as a first guide groove 321, and the first sliding part 23 can be configured as a sliding column, pulley, etc. Alternatively, the first guide rail 32 can be configured as a first guide rib 322, and the first sliding part 23 can be configured as a sliding groove. For example, the first sliding part 23 includes two spaced-apart sliding columns, with the gap between the two columns forming the sliding groove. It can also be that the sliding part is directly configured as a sliding protrusion, and then a sliding groove is formed on it, etc. No limitation is made here. Similarly, the specific implementation of the second guide rail 33 and the second sliding part 24 is also not limited. The second guide rail 33 can be configured as a second guide groove 331 or a second guide rib 332, and correspondingly, the second sliding part 24 can be configured as a sliding column or a sliding groove, etc. This utility model does not limit this.

[0069] Furthermore, this utility model also proposes a household appliance 1000, including a housing 200, a lifting mechanism 100, and a first shelf 300. The housing 200 forms a receiving cavity 201. The lifting mechanism 100 includes the aforementioned lifting mechanism 100. The fixed arm 1 of the lifting mechanism 100 is disposed on the side wall 2012 of the receiving cavity 201. The first shelf 300 is hinged to the swing arm 2 of the lifting mechanism 100. The lifting mechanism 100 allows the first shelf 300 to switch between a bottom lifting position and a top lifting limit position. It should be noted that the specific structure of the lifting mechanism 100 refers to the above embodiments. Since this household appliance 1000 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here.

[0070] Corresponding to the household appliance 1000, the first shelf 300 may have two positions: a bottom lifting position and a top lifting limit position. Furthermore, considering an embodiment where the first shelf 300 can move forward and backward relative to the connecting member, the first shelf 300 may have three positions: a bottom storage position, a bottom lifting position, and a top lifting limit position. Finally, considering an embodiment where the first shelf 300 can be locked forward relative to the connecting member, the first shelf 300 may have four positions: a bottom storage position, a bottom lifting position, a top lifting limit position, and a top locking position. In some household appliances 1000, some have only one shelf, some have two, and some have more. In the technical solution of this utility model, a second shelf 400 is also provided in the receiving cavity 201. Corresponding to the top lifting limit position, the lower end of the first shelf 300 protrudes upward from the lower end of the second shelf 400. That is, at the lifting limit position of the first shelf 300, the lifting height of the first shelf 300 is higher than that of the second shelf 400. At this time, the lifting height is larger, which reduces the frequency of users bending over and improves the user experience.

[0071] It should be noted that in the embodiment where there are two shelves in the household appliance 1000, the first shelf 300 is the lower shelf and the second shelf 400 is the upper shelf. When the first shelf 300 is in the top storage position and the second shelf 400 is in the receiving cavity 201, the first shelf 300 is below the second shelf 400 and the two are arranged opposite to each other.

[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 ends of the first shelf 300 and the second shelf 400, corresponding to the top lifting limit position and the top lifting lock position of the first shelf 300, the upper end of the first shelf 300 protrudes upwards beyond the upper end of the second shelf 400. That is, provided that the depths of the first shelf 300 and the second shelf 400 are the same, 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] 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: 1. The first shelf 300 is located in the bottom storage position, such as... Figure 6-8 As shown: 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 6 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.

[0076] 2. The first shelf 300 is in the bottom position to be lifted, such as... Figure 9-10 As shown: 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 front end of the guide rail. When multiple guide rails are provided, such as the first guide rail 32 and the second guide rail 33, 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 first sliding part 23 is located at the front end of the first guide rail 32. Then, the first shelf 300 continues to move forward and upward.

[0077] 3. The first shelf 300 is at its maximum lifting position at the top, such as... Figure 11-12 As shown: This state is when the user raises the first shelf 300, or when the user releases the lock after using the first shelf 300. In these states, the first shelf 300 is at its maximum raised height. Figure 11 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.

[0078] 4. The first shelf 300 is in the top locked position, such as... Figure 13-14 As shown: 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 13-14As 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.

[0079] The following will describe a complete user experience flow, based on the above embodiments: 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. 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.

[0080] 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 locking element used in the lifting mechanism of a household appliance, disposed on a first shelf, for cooperating with a swing arm to restrict relative movement between the swing arm and the first shelf when the swing arm swings the first shelf upward to its top lifting limit position and the first shelf moves to its top locking position, characterized in that, The locking element includes: The lock body has its mounting side on the left-right side; A first guide rail is provided on the mounting side of the lock body. The first guide rail includes a first arc-shaped segment connecting the first end of the first guide rail. The first arc-shaped segment is used to provide a sliding arc-shaped track for the first sliding part of the swing arm. A first limiting part is provided corresponding to the tail end of the first guide rail. When the first sliding part moves to the first limiting part, the first limiting part limits the first sliding part; and... A contact portion is provided corresponding to the tail end of the first guide rail, so that when the first sliding portion moves to approach or reach the first limiting portion, the contact portion contacts the first sliding portion.

2. The locking member as described in claim 1, characterized in that, The tail end of the first guide rail is provided with a limiting rail. The first guide rail is used to guide the first sliding part to slide to the limiting rail, and the limiting rail is used to limit the first sliding part. The contact part is disposed at the junction of the first guide rail and the limiting rail, or the contact part is disposed on the limiting rail.

3. The locking member as described in claim 2, characterized in that, The first guide rail is configured as a first guide groove; The limiting rail includes a limiting groove that communicates with the tail end of the first guide groove; The contact portion is a protrusion disposed on the inner wall of the first guide groove or the limiting groove.

4. The locking member as described in claim 3, characterized in that, The protrusion includes a retaining rib disposed on the inner side wall of the first guide groove or the limiting groove.

5. The locking member as described in claim 3, characterized in that, The mounting side of the lock body is provided with a deformation groove around the limiting groove.

6. The locking member as claimed in claim 1, characterized in that, The locking component further includes a second guide rail disposed on the mounting side of the lock body. The second guide rail includes a second arc-shaped segment connecting the first end of the second guide rail. The second arc-shaped segment is arranged in a backward and downward arc shape from the first end to the tail end of the second guide rail, so as to provide a sliding arc-shaped track for the second sliding part of the swing arm. The first arc segment is arranged in an arc shape extending backward and upward from the first end to the last end of the first guide rail, and the first guide rail is located below the second guide rail. The locking component further includes a second limiting part provided at the tail end corresponding to the second guide rail. The first limiting part is used to limit the first sliding part of the swing arm in the front and back, and the second limiting part is used to limit the second sliding part of the swing arm in the upper and lower.

7. The locking member as described in claim 6, characterized in that, The second guide rail is configured as a second guide groove, the tail end of the second guide groove penetrates downward through the lock body to form a lower end slot, and a stop surface is formed on the periphery of the lower end slot at a rear position, the stop surface forming the second limiting part.

8. A lifting mechanism for lifting a first shelf of a household appliance, such that the first shelf can be lifted and lowered between a bottom position to be lifted and a top position to be lifted to its maximum height, characterized in that, The lifting mechanism includes: A fixed arm for mounting in the receiving cavity of the household appliance; A swing arm assembly includes at least a first swing arm, on which a first hinge mounting portion and a second hinge mounting portion are formed. The first hinge mounting portion is mounted to the fixed arm, and the second hinge mounting portion is used for direct or indirect mounting to the first shelf. The first swing arm also has a first sliding portion. A locking element, the locking element comprising the locking element as described in any one of claims 1 to 7.

9. The lifting mechanism as described in claim 8, characterized in that, The lifting mechanism also includes a slide rail structure, which includes multiple slide rail sections that are telescopically connected to each other. 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 second hinged mounting part, and the last slide rail section is connected to the first shelf. 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 to the top locking position.

10. The lifting mechanism as described in claim 9, 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. The second hinge mounting parts of the two swing arms are both hinged to the connector, and the connector is installed on the first shelf.

11. A household appliance, characterized in that, include: The shell has a receiving cavity; A lifting mechanism, comprising the lifting mechanism as described in any one of claims 8 to 10, wherein the fixed arm of the lifting mechanism is disposed on the side wall of the receiving cavity; and, The first shelf is hinged to the swing arm of the lifting mechanism; The lifting mechanism allows the first shelf to switch between the bottom position to be lifted and the top position to be lifted to its maximum height.

12. The household appliance as described in claim 11, characterized in that, A second shelf is also provided in the receiving cavity. Corresponding to the top lifting limit position, the lower end of the first shelf is higher than the lower end of the second shelf.

13. The household appliance as described in claim 12, 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.

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