Locking piece, lifting mechanism and household appliance

Abstract

The utility model discloses a locking piece, a lifting mechanism and a household appliance, and relates to the technical field of household appliances, the locking piece comprises a lock body, at least one guide rail and a limiting structure, the lock body is used for being installed on a first storage rack, and the side, located in the left-right direction, of the lock body is an installation side; the guide rails are arranged on the mounting side of the lock body, at least one guide rail comprises an arc-shaped section connected with the head end of the guide rail, and the arc-shaped section is used for providing a sliding arc-shaped track for the sliding part of the swing arm; the limiting structure is connected with the tail end of the guide rail and is arranged backwards, and the limiting structure is used for limiting a sliding part on the swing arm when the first storage rack moves to a top locking position so as to limit relative movement of the swing arm and the first storage rack; according to the technical scheme, the locking simplicity and convenience in the lifting process of an existing storage rack are improved.

Description

[0001] This application claims the priority of Chinese Patent Applications No. 202420943998.8 and 202410541707.7, both entitled "Lifting Mechanism and Dishwasher", filed with the Chinese Patent Office on April 30, 2024. The entire content thereof is incorporated herein by reference. Technical Field

[0002] The utility model relates to the technical field of household appliances, and particularly relates to a locking member, a lifting mechanism and a household appliance. Background Art

[0003] In household appliances with an internal space, movable storage structures such as a storage rack that can extend from the interior of the household appliance are usually configured. In the prior art, there are some movable storage structures that have a pulling-out function and also a lifting function.

[0004] In some household appliances, the storage rack is usually placed at the bottom of the household appliance. During use, operations such as taking and placing tableware require frequent bending over. To reduce the frequency of bending over during the use of the storage rack, in the prior art, a lifting mechanism is used to lift the storage rack before use, which can reduce the frequency of bending over. However, in current household appliances, during the process of lifting the storage rack, the storage rack needs to be pulled forward first, and during the pulling process, the storage rack is lifted. When the storage rack is lifted to the top lifting limit position, the user needs to push the storage rack backward to lock the storage rack at the top, and the operation is cumbersome. Summary of the Utility Model

[0005] The main purpose of the utility model is to propose a locking member, a lifting mechanism and a household appliance, aiming to improve the simplicity of locking during the lifting process of the existing storage rack.

[0006] To achieve the above object, the utility model is applied to a lifting mechanism of a household appliance and is arranged on a first storage rack for cooperating with a swing arm to limit the relative movement between the swing arm and the first storage rack when the swing arm swings the first storage rack upward to the top lifting limit position and the first storage rack moves forward to the top locking position. The locking member includes:

[0007] A lock body for being installed on the first storage rack, and one side of the lock body in the left-right direction is the installation side;

[0008] At least one guide rail is arranged on the installation side of the lock body. The at least one guide rail includes an arc section connecting the head end of the guide rail, and the arc section provides a sliding arc track for the sliding part of the swing arm; and,

[0009] A limiting structure is connected to the tail end of the guiding rail and disposed rearward. The limiting structure is used to limit the sliding part on the swing arm when the first storage rack moves to the top locking position, so as to restrict the relative movement between the swing arm and the first storage rack.

[0010] In an alternative embodiment, at least two guiding rails are provided, and the two guiding rails include:

[0011] A first guiding rail, the arc section of the first guiding rail is a first arc section, and the first arc section is arranged in an arc shape that is backward and downward from the head end to the tail end of the first guiding rail. The first guiding rail is used for sliding cooperation with the first sliding part of the swing arm; and,

[0012] A second guiding rail, located below the first guiding rail, the arc section of the second guiding rail is a second arc section, and the second arc section is arranged in an arc shape that is backward and upward from the head end to the tail end of the second guiding rail.

[0013] In an alternative embodiment, the limiting structure includes:

[0014] A first limiting part, corresponding to the tail end of the first guiding rail and disposed rearward, for vertically limiting the first sliding part of the swing arm.

[0015] In an alternative embodiment, the first guiding rail is provided as a first guiding groove;

[0016] The tail end of the first guiding rail penetrates downward through the lock body to form a lower end notch, and a stop surface is formed at the circumference of the lower end notch and at a rearward position. The stop surface forms the first limiting part.

[0017] In an alternative embodiment, the first guiding rail is provided as a first guiding rib;

[0018] The first limiting part includes a limiting boss provided at the rear side of the tail end of the first guiding rib.

[0019] In an alternative embodiment, the limiting structure further includes:

[0020] A second limiting part, corresponding to the tail end of the second guiding rail and disposed rearward, for limiting the second sliding part of the swing arm.

[0021] In an alternative embodiment, the second guiding rail is provided as a second guiding groove;

[0022] The second limiting part includes a limiting groove that is communicated with the tail end of the second guiding groove and extends rearward.

[0023] In an alternative embodiment, the limiting groove is inclined upward in the front-to-rear direction.

[0024] In an alternative embodiment, at the connection between the limiting groove and the second guiding groove, a rib is provided on the inner side wall of the limiting groove.

[0025] In an alternative embodiment, a deformation groove is provided on the periphery of the mounting side of the lock body around the limiting groove.

[0026] In an alternative embodiment, a plurality of deformation grooves are provided, and the plurality of deformation grooves are arranged at intervals.

[0027] In an alternative embodiment, the distance between the deformation groove and the limiting groove is L1, where 0.5 mm ≤ L1 ≤ 1.5 mm; and / or,

[0028] The width of the deformation groove is L2, where 1 mm ≤ L2 ≤ 2 mm.

[0029] In an alternative embodiment, at the connection between the limiting groove and the second guiding groove, a rib is provided on the inner side wall of the limiting groove, and the deformation groove is provided corresponding to the rib.

[0030] In an alternative embodiment, the second guiding rail is provided as a second guiding rib, and the second limiting portion includes a second limiting rib connected to the tail end of the second guiding rail.

[0031] In an alternative embodiment, the head end of the second guiding rail is lower than the highest point of the second guiding rail.

[0032] To achieve the above object, the present application further provides a lifting mechanism for lifting a first storage rack of a household appliance, so that the first storage rack can be lifted and switched between a bottom position to be lifted and a top lifting limit position, and the first storage rack has a locking position and an unlocking position corresponding to the top lifting limit position. The lifting mechanism includes:

[0033] A fixed arm for being installed in the accommodation cavity of the household appliance;

[0034] A swing arm assembly including at least a first swing arm, a first hinge mounting portion and a second hinge mounting portion are formed on the first swing arm, the first hinge mounting portion is mounted on the fixed arm, the second hinge mounting portion is used to directly or indirectly mount on the first storage rack, and a sliding portion is formed on the first swing arm; and,

[0035] A locking member, and the locking member is the locking member described above.

[0036] In an alternative embodiment, the first swing arm has an upper swing limit position for enabling the first storage rack to be in the top lifting limit position. At the upper swing limit position, the first swing arm is used to support the first storage rack upward, and in the direction from the rear to the front, the first swing arm is inclined upward.

[0037] In an alternative embodiment, corresponding to the upper swing limit position, the included angle between the connecting line of the rotation centers of the first hinge mounting portion and the second hinge mounting portion on the same swing arm and the horizontal direction is α, and 0° < α ≤ 70°.

[0038] In an alternative embodiment, the guide rail is provided as a guide groove. Correspondingly, the sliding portion includes a sliding column; or

[0039] The guide rail is provided as a guide rib. Correspondingly, the sliding portion includes two sliding columns arranged at intervals.

[0040] In an alternative embodiment, the guide rail includes a second guide rail. The second guide rail is provided as a second guide groove. The limiting structure includes a limiting groove communicated with the tail end of the second guide groove. The sliding portion includes a sliding column matched with the second guide groove;

[0041] The length of the limiting groove is L, and the width of the sliding column is D. Wherein, D / 3 ≤ L ≤ 2 / 3D.

[0042] In an alternative embodiment, the lifting mechanism further includes a slide rail structure. The slide rail structure includes a plurality of slide rails that are telescopically and slidably connected to each other. The plurality of slide rails at least include a first slide rail and a last slide rail. The first slide rail is directly or indirectly connected to the second hinge mounting portion, and the last slide rail is connected to the first storage rack;

[0043] The swing arm can swing the first storage rack forward and upward from the bottom waiting-to-be-lifted position to the top lifting limit position. When the first storage rack is in the top lifting limit position, the plurality of slide rails extend in the front-rear direction and can slide relative to each other, so that the first storage rack can slide forward to the top locking position.

[0044] In an alternative embodiment, two swing arms are provided. The lifting mechanism further includes a connecting member connected to the first slide rail. The second hinge mounting portions of the two swing arms are both hinged to the connecting member.

[0045] To achieve the above object, the present application further provides a household appliance, including:

[0046] A housing, which forms a receiving cavity;

[0047] The lifting mechanism includes the lifting mechanism described in any of the above, and the fixed arm of the lifting mechanism is provided on the side wall of the accommodating cavity; and,

[0048] The first storage rack is hingedly connected to the swing arm of the lifting mechanism;

[0049] The lifting mechanism enables the first storage rack to switch between the bottom position to be lifted and the top lifting limit position.

[0050] In an embodiment, a second storage rack is further provided in the accommodating cavity. Corresponding to the top lifting limit position, the lower end of the first storage rack extends upward beyond the lower end of the second storage rack.

[0051] In an embodiment, the household appliance includes a dishwasher, and the first storage rack is arranged as a lower dish basket.

[0052] In the technical solution of the present utility model, by connecting the limiting structure to the tail end of the guiding rail and arranging it backward, when the first storage rack is lifted to the top lifting limit position, only need to continue to pull the first storage rack forward, so that the first storage rack continues to move forward, and it can be located on the sliding part at the tail end of the guiding rail and slide onto the limiting structure, and be limited by the limiting structure. During the entire lifting and locking process, the user first pulls the first storage rack forward to make the first storage rack move forward and lift upward, and then pulls the first storage rack forward to lock the first storage rack. During the whole process, the user only needs to pull the first storage rack forward to complete the lifting and locking, and the operation simplicity is high. Description of the Drawings

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0054] Figure 1 It is a schematic structural diagram of the first embodiment of the locking member provided by the present utility model;

[0055] Figure 2 It is a schematic structural diagram of the second embodiment of the locking member provided by the present utility model;

[0056] Figure 3 It is a schematic structural diagram of the third embodiment of the locking member provided by the present utility model;

[0057] Figure 4Schematic structural diagram of the fourth embodiment of the locking member provided by the present utility model;

[0058] Figure 5 Schematic structural diagram of the fifth embodiment of the locking member provided by the present utility model;

[0059] Figure 6 Schematic structural diagram of the sixth embodiment of the locking member provided by the present utility model;

[0060] Figure 7 Schematic structural diagram of the seventh embodiment of the locking member provided by the present utility model;

[0061] Figure 8 Schematic structural diagram of the eighth embodiment of the locking member provided by the present utility model;

[0062] Figure 9 Schematic structural diagram of the ninth embodiment of the locking member provided by the present utility model;

[0063] Figure 10 Schematic perspective view of an embodiment of a household appliance (the first storage rack is in the bottom storage position, and the swing arm of the lifting mechanism is in the lower limit position);

[0064] Figure 11 For Figure 10 Schematic perspective view of the three-dimensional structure including the lifting mechanism and the first storage rack;

[0065] Figure 12 For Figure 10 Schematic front view of the structure including the lifting mechanism and the first storage rack;

[0066] Figure 13 For Figure 10 Schematic perspective view of the household appliance in (the first storage rack is in the bottom position to be lifted, and the swing arm of the lifting mechanism is in the lower limit position);

[0067] Figure 14 For Figure 13 Schematic front view of the structure including the lifting mechanism and the first storage rack;

[0068] Figure 15 For Figure 10 Schematic perspective view of the household appliance in (the first storage rack is in the top lifting limit position, and the swing arm of the lifting mechanism is in the upper limit position);

[0069] Figure 16 For Figure 15 Schematic front view of the structure including the lifting mechanism and the first storage rack;

[0070] Figure 17 For Figure 10Schematic three-dimensional structure diagram of the household appliance (where the first storage rack is in the top locking position and the swing arm of the lifting mechanism is in the upper swing limit position);

[0071] Figure 18 is Figure 17 Schematic front view structure diagram of the lifting mechanism and the first storage rack included in

[0072] Explanation of the reference numerals in the drawings:

[0073] 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 part; 31, lock body; 311, mounting side; 32, first guide rail; 321, first guide groove; 3211, lower end notch; 322, first guide rib; 33, second guide rail; 331, second guide groove; 332, second guide rib; 34, deformation groove; 35, clamping rib; 41, first limiting part; 411, limiting boss; 412, abutting surface; 42, second limiting part; 421, limiting groove; 6, damping part; 51, first section slide rail; 52, last section slide rail;

[0074] 1000, household appliance; 200, housing; 201, accommodating cavity; 2012, side wall; 300, first storage rack; 400, second storage rack.

[0075] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0076] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0077] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0078] In addition, if the descriptions such as "first", "second", etc. are involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, scenario B, or the scenario where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0079] In a household appliance having an internal space, a movable storage structure such as a storage rack that can extend from the interior of the household appliance is usually configured. In the prior art, there are some movable storage structures that have a pulling-out function and also have a lifting function.

[0080] In some household appliances, the storage rack is usually placed at the bottom of the household appliance. During use, operations such as taking and placing tableware require frequent bending over. In order to reduce the frequency of bending over during the use of the storage rack, in the prior art, a lifting mechanism is used to lift the storage rack before use, which can reduce the frequency of bending over. However, in current household appliances, during the process of lifting the storage rack, the storage rack needs to be pulled forward first, and during the pulling process, the storage rack is lifted. When the storage rack is lifted to the top lifting limit position, the user needs to push the storage rack backward to lock the storage rack at the top, and the operation is cumbersome.

[0081] The present utility model proposes a locking member 3. Please refer to Figures 1 to 5, in an embodiment of the present utility model, the locking member 3 is used on the lifting mechanism 100 of the household appliance 1000, and is arranged on the first storage rack 300 to cooperate with the swing arm 2. When the swing arm 2 swings the first storage rack 300 upward to the top lifting limit position and the first storage rack 300 moves forward to the top locking position, the relative movement between the swing arm 2 and the first storage rack 300 is restricted. The locking member 3 includes a lock body 31, at least one guide rail and a limiting structure. The lock body 31 is used to be installed on the first storage rack 300, and one side of the lock body 31 in the left-right direction is the installation side 311; at least one of the guide rails is arranged on the installation side 311 of the lock body 31, and at least one of the guide rails includes an arc section connecting the head end of the guide rail, and the arc section is used to provide a sliding arc track for the sliding part of the swing arm 2; the limiting structure is connected to the tail end of the guide rail and is arranged backward, and the limiting structure is used to limit the sliding part on the swing arm 2 when the first storage rack 300 moves to the top locking position, so as to restrict the relative movement between the swing arm 2 and the first storage rack 300.

[0082] It should be noted that, taking the user as the reference direction, forward is the direction towards the user, or towards the side of the household appliance 1000 where the door body is provided; backward is the direction opposite to the forward direction, specifically the direction away from the user, and the up-down direction is the direction with gravity as the reference.

[0083] In the technical solution of the present utility model, by connecting the limiting structure to the tail end of the guide rail and arranging it backward, when the first storage rack 300 is lifted to the top lifting limit position, only need to continue to pull the first storage rack 300 forward, and let the first storage rack 300 continue to move forward, then the sliding part located at the tail end of the guide rail can slide onto the limiting structure and be limited by the limiting structure. During the whole lifting and locking process, the user first pulls the first storage rack 300 forward to make the first storage rack 300 move forward and lift upward, and then pulls the first storage rack 300 forward to lock the first storage rack 300. During the whole process, the user only needs to pull the first storage rack 300 forward to complete the lifting and locking, and the operation simplicity is high.

[0084] It should be emphasized that the number of the guide rails and the sliding parts is not limited. It can be one or multiple, etc., and is not limited herein. The specific implementation forms of the guide rails and the sliding parts are not limited. The guide rails can be configured as guide grooves, and the sliding parts can be configured as sliding columns, pulleys, etc. It can also be that the guide rails are configured as guide ribs, and the sliding parts are configured as sliding grooves. For example, the sliding part includes two sliding columns arranged at intervals, and the interval between the two sliding columns constitutes the sliding groove. It can also be that the sliding part is directly set as a sliding protrusion, and a sliding groove is opened on it, etc., and is not limited herein.

[0085] Further, since the first storage rack 300 is supported on the swing arm 2 by the lock body 31, the locking member 3 needs to have a certain hardness and strength, and there are various materials. Specifically, the lock body 31 can be made of metal alloys such as steel and aluminum alloy, can also be made of inorganic non-metallic materials such as ceramics, and can also be made of polymer materials such as plastics. As long as it can support the storage items after loading, the present invention is not limited thereto. Further, the shape of the lock body 31 has various forms, which can be rectangular or pentagonal, etc., and the present invention is not limited thereto.

[0086] The specific implementation form of the limiting structure is not limited. It can be in the form of a limiting groove, can be in the form of a limiting rib or a limiting surface, etc., and is not limited herein.

[0087] One side of the lock body 31 in the left-right direction is the installation side 311, and the side of the lock body 31 opposite to the installation side 311 is fixedly installed on the first storage rack 300, so as to be able to move together with the first storage rack 300.

[0088] The household appliance 1000 can be a dishwasher, an oven, an oven, a refrigerator, etc. The household appliance 1000 includes a housing 200, a receiving cavity 201 is formed in the housing 200, a first storage rack 300 is connected in the receiving cavity 201 through a lifting mechanism 100, and utensils to be placed are arranged on the first storage rack 300, such as tableware such as bowls, plates, dishes, chopsticks, forks and knives, and can also be baked food or items to be refrigerated, etc.

[0089] It should be noted that in some household appliances 1000, there is only one storage rack, such as the first storage rack 300. There are also those with multiple storage racks. In the embodiments of the household appliance 1000 with multiple storage racks, there may be two, such as the first storage rack 300 and the second storage rack 400. When the two storage racks have a vertical positional relationship, they can be referred to as the upper storage rack and the lower storage rack. In the description of the embodiments of the present utility model, the first storage rack 300 corresponds to the upper storage rack, and the second storage rack 400 corresponds to the lower storage rack.

[0090] For the first storage rack 300, it is necessary to move the first storage rack 300 out of the accommodation cavity 201 of the household appliance 1000, then lift it to a suitable position, and finally lock it in place. Specifically, after the door of the household appliance 1000 is opened, the user needs to put in or take out the items to be placed from the first storage rack 300. The user often pulls the first storage rack 300 forward. During the movement of the first storage rack 300, there will be a combined movement process, that is, moving forward and upward simultaneously. At this time, the lifting mechanism 100 will move accordingly and support the first storage rack 300.

[0091] The first storage rack 300 has several important positions during its movement. Commonly, there are the bottom storage position (as shown in the appendix Figures 10 to 12 ), the bottom position to be lifted (as shown in the appendix Figure 13 and Figure 14 ), the top lifting limit position (as shown in the appendix Figure 15 and Figure 16 ), and the top locking position (as shown in the appendix Figure 17 and Figure 18 ).

[0092] When the first storage rack 300 has four positions, namely the bottom storage position, the bottom position to be lifted, the top lifting limit position, and the top locking position, when the swing arm 2 is at the lower swing limit position, the corresponding first storage rack 300 is at the bottom storage position and the bottom position to be lifted; when the swing arm 2 is at the upper swing limit position, the corresponding first storage rack 300 is at the top lifting limit position and the top locking position.

[0093] The following describes the process of the user using the household appliance 1000 with reference to the relevant structure of the household appliance 1000, taking the first storage rack 300 as a reference:

[0094] 1. The first storage rack 300 is at the bottom storage position, as shown in Figures 10 - 12 :

[0095] This state is when the user has not used, or has just started using, or has finished using. In these states, the first storage rack 300 is within the accommodation cavity 201 of the household appliance 1000. As can be seen from Figures 10 to 12 that the first storage rack 300 is received into the accommodation cavity 201. At this time, the swing arm 2 is at the lower limit position, and the sliding part and the guide rail are in a separated state.

[0096] 2. The first storage rack 300 is at the bottom position to be lifted, as shown in Figures 13 - 14 as follows:

[0097] This state is when the user pulls out the first storage rack 300 from the accommodation cavity 201, or when the user lowers the first storage rack 300 after using it. In these states, the first storage rack 300 is at the opening of the accommodation cavity 201, and the swing arm 2 is still at the lower limit position. At this time, the sliding part contacts the leading end of the guide rail. When there are multiple guide rails, such as including the first guide rail 32 and the second guide rail 33, multiple corresponding sliding parts are provided. 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 leading end of the second guide rail 33. Then, the first storage rack 300 continues to move forward and upward.

[0098] 3. The first storage rack 300 is at the top lifting limit position, as shown in Figures 15 - 16 as follows:

[0099] This state is when the user lifts the first storage rack 300, or when the user exits the locked state after using the first storage rack 300. In these states, the first storage rack 300 is at the maximum lifted height. As can be seen from Figures 15 - 16 that at this time, the sliding part of the swing arm 2 slides to the trailing end of the guide rail, and the swing arm 2 is at the upper limit position.

[0100] 4. The first storage rack 300 is at the top locked position, as shown in Figures 17 - 18 as follows:

[0101] This state is a locked state after the user lifts the first storage rack 300. At this time, the user can pick up and place the items to be placed. In these states, the first storage rack 300 is at the maximum lifted height. As can be seen from Figures 17 - 18It can be seen that the first storage rack 300 has moved forward a certain distance relative to its top lifting limit position at the top locking position. The sliding part of the swing arm 2 slides from the tail end of the guide rail to the limiting structure, and 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.

[0102] If only one of the guide rail and the sliding part is provided, between the swing arm 2 and the first storage rack 300, there is only one sliding part for connection, and during the locking process, the locking stability is poor.

[0103] Specifically, in a further embodiment, at least two guide rails are provided. The at least two guide rails include a first guide rail 32 and a second guide rail 33. The arc section of the first guide rail 32 is a first arc section, and the first arc section is arranged in an arc shape that is backward and downward from the head end to the tail end of the first guide rail. The first guide rail 32 is used for sliding cooperation with the first sliding part 23 of the swing arm 2. The second guide rail 33 is located below the first guide rail 32. The arc section of the second guide rail is a second arc section, and the second arc section is arranged in an arc shape that is backward and upward from the head end to the tail end of the second guide rail. The second guide rail 33 is used for sliding cooperation with the second sliding part 24 of the swing arm 2.

[0104] It should be noted that the first arc section is arranged in an arc shape that is backward and downward from the head end to the tail end of the first guide rail 32. It can be continuously upward extending from its head end to the tail end, or in the front-to-back direction, first upward extending and then downward extending, etc. It is not limited here. In one embodiment, when at the lower swing limit position, the swing arm 2 is vertically downward (refer to Figure 12 ), and at the upper swing limit position, the swing arm is arranged in an inclined upward manner (refer to Figure 16 and Figure 18 ). Therefore, when the swing arm 2 rotates from the lower swing limit position to the upper swing limit position, the rotation angle of the swing arm 2 is greater than 90°. At this time, the trajectory of the second sliding part 24 should be to move upward first and then downward. In the technical solution of this embodiment, the second guide rail 33 extends upward first and then downward in the front-to-back direction. The head end of the second guide rail 33 is lower than the highest point of the second guide rail 33, so that the second guide rail 33 matches the trajectory of the second sliding part 24, enabling the rotation angle of the swing arm 2 to be greater than 90°, so that when the first storage rack 300 is at the top lifting position, it can be higher than the existing one.

[0105] The arc section of the second guide rail 33 is the second arc section, and the second arc section is arranged in an arc shape that is backward and upward from the head end to the tail end of the second guide rail. Correspondingly, during the lifting process of the first sliding part 23 and the second sliding part 24, the first sliding part 23 moves downward, and the second sliding part 24 moves upward. The movement directions of the two are different, which can play a guiding role in the movement trajectory of the first storage rack 300 during the lifting process, improving its stability during the movement. Moreover, by setting the first guide rail 32 and the second guide rail 33, one of the first guide rail 32 and the second guide rail 33 can guide the swing arm 2 in the up and down direction, and the other can guide the swing arm 2 in the front and back direction, further improving the stability of the first storage rack 300 during the movement process.

[0106] Moreover, the head end of the second guide rail 33 is located on the front side of the head end of the first guide rail 32. During the lifting process, the second sliding part 24 of the swing arm 2 contacts the second guide rail 33 before the head end of the second guide rail 33. Under the action of the second guide rail 33, the swing arm 2 rotates upward, and the first sliding part 23 also rotates upward accordingly. During the rotation process, the first sliding part 23 moves to contact the head end of the first guide rail 32, and then the first sliding part 23 moves along the extending direction of the first guide rail 32. Finally, when reaching the top lifting limit position, both the first sliding part 23 and the second sliding part 24 reach the tail ends of the first guide rail 32 and the second guide rail 33.

[0107] In the technical solution of this embodiment, by setting at least two guide rails, and correspondingly setting at least two sliding parts, and the first guide rail 32 extends downward from its head end to its tail end, and the second guide rail 33 extends upward from its head end to its tail end, the stability of the first storage rack 300 during lifting and locking can be improved.

[0108] Furthermore, the specific implementation forms of the first guide rail 32 and the second guide rail 33 are not limited. They can both be set as guide grooves, or both can be set as guide ribs, or one can be set as a guide rib and the other can be set as a guide groove, etc., which are not limited here.

[0109] Meanwhile, the limiting structure includes a first limiting portion 41, which is disposed corresponding to the tail end of the first guide rail 32 and is arranged backward, and is used for vertically limiting the first sliding portion 23 of the swing arm 2. With such a setting, when the first sliding portion 23 reaches the tail end of the first guide rail 32 and the user continues to pull the first storage rack 300 forward, the first storage rack 300 moves forward to the top locking position, and the first sliding portion 23 moves from the first guide rail 32 to the first limiting portion 41 and is limited by the first limiting portion 41.

[0110] Please refer to Figure 1 , Figure 1 , which is a schematic structural diagram of the first embodiment of the locking member 3 provided by the present utility model. Figure 1 In , both the first guide rail 32 and the second guide rail 33 are provided as guide grooves, and both the first limiting portion 41 and the second limiting portion 42 are provided as limiting grooves; please refer to Figure 2 and Figure 3 , Figure 2 , which is a schematic structural diagram of the second embodiment of the locking member 3 provided by the present utility model. Figure 3 , which is a schematic structural diagram of the third embodiment of the locking member 3 provided by the present utility model. Figure 2 and Figure 3 In , both the first guide rail 32 and the second guide rail 33 are provided as guide grooves. The tail end of the first guide groove 321 penetrates the lock body downward to form a lower end notch 3211. A stop surface 412 is formed at the periphery of the lower end notch 3211 and at a rear position, and the stop surface 412 forms the first limiting portion 41. The second limiting portion 42 is configured as a limiting groove; please refer to Figure 4 , Figure 4 , which is a schematic structural diagram of the fourth embodiment of the locking member 3 provided by the present utility model. Figure 4 In , the first guide rail 32 is configured as the first guide rib 322, the first limiting portion 41 is configured as a limiting boss 411, the second guide rail 33 is configured as the second guide groove 331, and the second limiting portion 42 is configured as a limiting groove 421; please refer to Figure 5 , Figure 5 , which is a schematic structural diagram of the fifth embodiment of the locking member 3 provided by the present utility model. Figure 5 In , both the first guide rail 32 and the second guide rail 33 are provided as guide ribs, the first limiting portion 41 is configured as a limiting boss 411, and the second limiting portion 42 is configured as a limiting rib.

[0111] In one embodiment, please refer to Figure 2 , Figure 3 , Figures 6 to 9, the first guide rail 32 includes a first guide groove 321, and the tail end of the first guide groove 321 penetrates downward through the lock body 31 to form a lower end notch 3211. A stop surface 412 is formed at the periphery of the lower end notch 3211 and at a rear position, and the stop surface 412 forms the first limiting portion 41.

[0112] In the solution of this embodiment, when the lifting mechanism 100 lifts the first storage rack 300 upward to the upper limit position, the first sliding portion 23 slides along the first guide groove 321 to the stop surface 412 to limit the upward rotation of the swing arm 2. With such a setting, the stop surface 412 can form the first limiting portion 41. Compared with the grooving solution, there is no need for additional grooving, which is convenient for production and processing, and can save costs.

[0113] Of course, please refer to Figure 4 and Figure 5 , in other embodiments, the first guide rail 32 can also be configured as a guide rib. Specifically, the first guide rail 32 includes a first guide rib 322; the first limiting portion 41 includes a limiting boss 411 provided at the rear side of the tail end of the first guide rib 322.

[0114] Correspondingly, at this time, the first sliding portion 23 is configured as a chute. For example, the first sliding portion 23 includes two sliding columns arranged at intervals, and the interval between the two sliding columns forms the chute. It can also be directly configured the sliding portion as a sliding protrusion and then open a chute on it, and so on.

[0115] During the process of lifting the first storage rack 300, the first sliding portion 23 moves on the first guide rib 322. When the first storage rack 300 swings upward to the top lifting limit position and the first storage rack 300 moves forward to the top locking position, the first sliding portion 23 moves to the lower side of the limiting boss 411 and is limited by the limiting boss 411.

[0116] In addition, the limiting structure further includes a second limiting portion 42, which is arranged corresponding to the tail end of the second guide rail 33 and backward, and is used to limit the second sliding portion 24 of the swing arm 2. The form of the second guide rail 33 is not limited. Please refer to Figures 1 to 4 , Figures 6 to 9 , the second guide rail 33 includes a second guide groove 331, and the second limiting portion 42 includes a limiting groove 421 that is connected to the tail end of the second guide groove 331 and extends backward.

[0117] In the technical solution of this embodiment, when the locking member 3 moves forward with the first storage rack 300, the first end of the second guiding groove 331 contacts the second sliding portion 24, allowing the second sliding portion 24 on the swing arm 2 to slide in. Then, the second sliding portion 24 moves along the extending direction of the second guiding groove 331. After the first storage rack 300 moves to the top lifting limit position, the first storage rack 300 moves forward to the top locking position, and the second sliding portion 24 moves from the second guiding groove 331 to the limiting groove 421. At this time, the limiting groove 421 can limit the second sliding portion 24 in the front-back and / or up-down directions.

[0118] The limiting groove 421 may extend horizontally in the front-back direction. For example Figures 1 to 4 and Figure 6 as shown in, or may be inclined in the up-down direction. Please refer to Figure 7 and Figure 9 There are various ways for the limiting groove 421 to extend in the up-down direction. For example, the limiting groove 421 may extend vertically in the up-down direction or may extend obliquely in the up-down direction. In an embodiment of the present invention, the limiting groove 421 is inclined upward in the direction away from the second guiding groove 331. In this way, the inclined setting is adopted to enable the second guiding groove 331 to smoothly transition to the limiting groove 421, so that when the locking member 3 moves forward, the second sliding portion 24 can smoothly slide into the limiting groove 421. At the same time, the limiting groove 421 extends upward to cooperate with the abutting surface 412 to limit the up-down movement of the swing arm 2 and the locking member 3, thereby realizing front-pull locking. Of course, in other embodiments, the limiting groove 421 may also extend downward obliquely, etc. The present invention does not limit this.

[0119] Further, if the inclination angle of the limiting groove 421 is small, it is not easy to limit the second sliding part 24. If the inclination angle of the limiting groove 421 is large, the second sliding part 24 is not easy to slide into the limiting groove 421. Therefore, in this embodiment, the included angle between the limiting groove 421 and the front-rear direction is α, where 15° ≤ α ≤ 60°. This not only facilitates the second sliding part 24 to slide into the limiting groove 421, but also can limit the second sliding part 24 to prevent relative movement between the swing arm 2 and the locking part 3 in the front-rear direction. It can be understood that the included angle α between the limiting groove 421 and the front-rear 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 angular value between any two of the above integers. For example, the degrees between 50° and 60° can be 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, etc. Of course, it can also be some decimal degree values. The above values are all within the protection scope of the present utility model.

[0120] In an embodiment of the present utility model, at the connection of the limiting groove 421 and the second guiding groove 331, a rib 35 is provided on the inner side wall 2012 of the limiting groove 421. In this way, by providing the rib 35, a damping structure is formed to hold the second sliding part 24 in place, so as to remind the user that the first storage rack 300 has moved in place, thereby helping to improve the user experience. Further, the rib 35 can be one or multiple, etc. The present utility model does not limit this. Specifically, two ribs 35 are provided, and the two ribs 35 are respectively arranged on opposite sides of the limiting groove 421. In this way, by providing the two ribs 35, on the one hand, the passing width of the limiting groove 421 can be further reduced, the interference amount of the second sliding part 24 can be increased, and the feedback force of the damping can be improved. On the other hand, the sliding track 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.

[0121] It can be understood that there are various forming methods of the rib 35 and the lock body 31. For example, the rib 35 and the lock body 31 can be integrally formed or assembled. The present utility model does not limit this.

[0122] Since the lock body 31 needs to support the first storage rack 300, it needs to have a certain hardness and strength, making the lock body 31 not easily deformed, so that the second sliding part 24 is not easily passed through the rib 35. For this reason, in this embodiment, a deformation groove 34 is provided on the installation side 311 of the lock body 31 around the limit groove 421. In this way, by providing the deformation groove 34, the strength of the limit groove 421 is weakened, so that the limit groove 421 can be deformed in its width direction, so that the second sliding part 24 can slide over the rib 35.

[0123] In an embodiment of the present invention, the deformation groove 34 is arc-shaped. In this way, the arc-shaped setting is adopted to enclose the limit groove 421 in the deformation groove 34, so as to weaken the strength of the limit groove 421 and facilitate the sliding of the second sliding part 24. In another embodiment, a plurality of deformation grooves 34 are provided, and the plurality of deformation grooves 34 are arranged at intervals. In this way, by providing a plurality of deformation grooves 34, the limit groove 421 is surrounded by the deformation grooves 34, so as to weaken the strength around the limit groove 421, so that the second sliding part 24 can smoothly slide over the rib 35. At the same time, the plurality of deformation grooves 34 are arranged at intervals to avoid the place where the distance between the limit groove 421 and the first guide groove 321 is small, so as not to weaken the strength of the first guide groove 321 and reduce the possibility of the first sliding part 23 sliding out of the first guide groove 321.

[0124] Since the distance between the deformation groove 34 and the limit groove 421 is related to the deformation degree of the limit groove 421, when the deformation groove 34 is farther away from the limit groove 421, the limit groove 421 is less likely to be deformed. However, if the distance between the deformation groove 34 and the limit groove 421 is too small, the setting difficulty is higher. For this reason, in this embodiment, the distance between the deformation groove 34 and the limit groove 421 is L1, where 0.5 mm ≤ L1 ≤ 1.5 mm, which can not only weaken the strength of the limit groove 421, facilitate the deformation of the limit groove 421, but also facilitate the setting of the deformation groove 34 and is easy to manufacture. Further, the distance between the deformation groove 34 and the limit groove 421 can be any value between 0.5 mm and 1.5 mm, such as 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, etc. The above values are all within the protection scope of the present invention.

[0125] In an embodiment of the present utility model, the width of the deformation groove 34 is L2, where 1 mm ≤ L2 ≤ 2 mm. Since the wider the deformation groove 34 is, the more easily the limiting groove 421 deforms. However, if the deformation groove 34 is too wide, the strength of the first guiding groove 321 may be weakened, thus affecting the guiding of the first guiding groove 321. Therefore, 1 mm ≤ L2 ≤ 2 mm, which is convenient for the deformation of the limiting groove 421 and can avoid affecting the first guiding groove 321. Further, the width of the deformation groove 34 can be any value between 1 mm and 2 mm, such as 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, etc. All of the above values are within the protection scope of the present utility model.

[0126] It should be noted that the above two related technical features: "0.5 mm ≤ L1 ≤ 1.5 mm" and "1 mm ≤ L2 ≤ 2 mm" can be set alternatively or simultaneously. Obviously, setting them simultaneously has a better effect.

[0127] In an embodiment of the present utility model, at the connection between the limiting groove 421 and the second guiding groove 331, a ribbed bar 35 is provided on the inner side wall 2012 of the limiting groove 421, and the deformation groove 34 is provided corresponding to the ribbed bar 35. Since the deformation of the limiting groove 421 at the ribbed bar 35 is the largest, the deformation groove 34 is provided corresponding to the ribbed bar 35 to weaken the strength at the ribbed bar 35, so that the limiting groove 421 at the ribbed bar 35 can deform outward, thereby enabling the second sliding part 24 to smoothly slide over the ribbed bar 35.

[0128] In an embodiment of the present utility model, the first guiding groove 321 penetrates through the lower end surface of the lock body 31, and the abutting surface 412 is formed on the lower end surface of the lock body 31. In this way, the first guiding groove 321 penetrates through the lower end surface of the lock body 31 to directly use the lower end surface of the lock body 31 for limiting, so as to avoid additionally arranging a limiting structure, which is beneficial to cost reduction.

[0129] In addition, the second guiding rail 33 can also be set as a second guiding rib 332, and the second limiting part 42 includes a second limiting rib connected to the tail end of the second guiding rib 332.

[0130] Since it is necessary to guide the movement trajectory of the first storage rack 300 during the process of the lifting mechanism 100 lifting the first storage rack 300, in this embodiment, the first arc segment has a lower extension segment near its tail end, and the second arc segment has an upper extension segment near its head end. The lower extension segment and the upper extension segment are alternately arranged. In this way, by setting the upper extension segment and the lower extension segment, the movement of the first storage rack 300 in the front-rear direction is restricted. At the same time, the lower extension segment and the upper extension segment are alternately arranged so that during the process of the lifting mechanism 100 lifting the first storage rack 300, the first guiding groove 321 and the second guiding groove 331 can successively restrict the movement of the first storage rack 300 in the front-rear direction, thereby facilitating the lifting mechanism 100 to lift the first storage rack 300.

[0131] In an embodiment of the present invention, the groove depths of the first guiding groove 321 and the second guiding groove 331 are 5 mm to 10 mm. If the first guiding groove 321 and the second guiding groove 331 are too deep, the strength of the lock body 31 will be affected. If the first guiding groove 321 and the second guiding groove 331 are too shallow, the first sliding portion 23 and the second sliding portion 24 may slide out of the first guiding groove 321 and the second guiding groove 331. Therefore, the groove depths of the first guiding groove 321 and the second guiding groove 331 are 5 mm to 10 mm, which can not only guide the sliding of the first sliding portion 23 and the second sliding portion 24, but also do not affect the strength of the lock body 31. Further, the groove depths of the first guiding groove 321 and the second guiding groove 331 can be integer values of 10 mm, or any integer value between 5 mm and 10 mm, such as 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, etc. Of course, it can also be a value between any two of the above integers. For example, the values between 5 mm and 6 mm can be 5.1 mm, 5.2 mm, 5.3 mm, 5.4 mm, 5.5 mm, 5.6 mm, 5.7 mm, 5.8 mm, 5.9 mm, etc. The above values are all within the protection scope of the present invention.

[0132] In one embodiment, the widths of the first guiding groove 321 and the second guiding groove 331 are 5 mm to 10 mm. Since the installation side 311 of the lock body 31 is limited, if the widths of the first guiding groove 321 and the second guiding groove 331 are too wide, it is not convenient to arrange them on the lock body 31. If the widths of the first guiding groove 321 and the second guiding groove 331 are too narrow, it is not conducive to the first sliding part 23 and the second sliding part 24 sliding into the first guiding groove 321 and the second guiding groove 331. Therefore, the widths of the first guiding groove 321 and the second guiding groove 331 are 5 mm to 10 mm, which is convenient for setting the first guiding groove 321 and the second guiding groove 331 and is also convenient for the first sliding part 23 and the second sliding part 24 to slide into the first guiding groove 321 and the second guiding groove 331 respectively. Further, the groove widths of the first guiding groove 321 and the second guiding groove 331 can be integral values of 10 mm or any integral value between 5 mm and 10 mm. For example, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, etc. Of course, it can also be a value between any two of the above integers. For example, the values between 5 mm and 6 mm can be 5.1 mm, 5.2 mm, 5.3 mm, 5.4 mm, 5.5 mm, 5.6 mm, 5.7 mm, 5.8 mm, 5.9 mm, etc. The above values are all within the protection scope of the present utility model.

[0133] To achieve the above object, the present application further provides a lifting mechanism 100 for lifting the first storage rack 300 of the household appliance 1000, so that the first storage rack 300 can be lifted and switched between a bottom waiting-to-be-lifted position and a top lifting limit position, and the first storage rack 300 has a locking position and an unlocking position corresponding to the 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 used for being installed in the accommodating cavity 201 of the household appliance 1000. The swing arm 2 assembly includes at least one swing arm 2, and a first hinge mounting portion 21 and a second hinge mounting portion 22 are formed on the swing arm 2. The first hinge mounting portion 21 is mounted on the fixed arm 1, and the second hinge mounting portion 22 is used for directly or indirectly mounting on the first storage rack 300. The specific structure of the locking member 3 refers to the above embodiment. Since the lifting mechanism 100 adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated herein one by one.

[0134] In the technical solution of this embodiment, by connecting the limiting structure of the locking member 3 to the tail end of the guide rail and arranging it backward, when the first storage rack 300 is lifted to the top lifting limit position, only need to continue to pull the first storage rack 300 forward, and let the first storage rack 300 continue to move forward, then the sliding part located at the tail end of the guide rail can slide onto the limiting structure and be limited by the limiting structure. During the entire lifting and locking process, the user first pulls the first storage rack 300 forward to make the first storage rack 300 move forward and lift upward, and then pulls the first storage rack 300 forward again to lock the first storage rack 300. During the whole process, the user only needs to pull the first storage rack 300 forward to complete the lifting and locking, and the operation simplicity is high.

[0135] In some embodiments, correspondingly at the upper swing limit position, the swing arm 2 is used to support the storage rack upward; in the direction from back to front, the swing arm 2 is arranged to be inclined upward.

[0136] In the technical solution of this embodiment, the first storage rack 300 is lifted by the swing of the swing arm 2, so that the storage rack can be lifted to the top lifting limit position. At the upper swing limit position, the swing arm 2 is used to support the first storage rack 300 upward, and in the direction from back to front, the swing arm 2 is arranged to be inclined upward. Compared with the swing arm 2 swinging to the horizontal direction, the swing arm 2 can swing a larger angle, so that the first storage rack 300 can be lifted to a greater height, reducing the user's frequent bending during operation and improving the user experience.

[0137] The angle between the swing arm 2 and the horizontal direction at the upper swing limit position is not limited. In some embodiments, correspondingly at the upper swing limit position, the center line connecting the center of the first hinge part and the center of the second hinge mounting part 22 is the first connection line, and the angle between the first connection line and the horizontal direction is α, and α is greater than 0° and less than or equal to 70°. The larger the angle, the greater the lifting height of the first storage rack 300. Considering that the swing arm 2 needs to cooperate with other structures to achieve lifting, and also considering some interference factors and the structural strength of the swing arm 2, setting the maximum angle of the angle to 70° is a relatively reasonable value.

[0138] It should be noted that the included angle a can be an integer value of 70°, or any integer value between 0° and 70°, such as 10°, 20°, 30°, 40°, 50°, 60°, etc. Of course, it can also be an angular value between any two of the above integers. For example, the degrees between 0° and 10° can be 1°, 2°, 3°, 4°, 5°, 6°, 7°, 8°, 9°, etc. It can also be the degrees between 10° and 20°, between 20° and 30°, between 30° and 40°, between 40° and 50°, between 50° and 60°. Of course, it can also be some decimal degree values. All of the above values are within the protection scope of the present utility model.

[0139] It can be understood that when the value of the α angle is larger, the lifting height of the first storage rack 300 is larger, and the first storage rack 300 is closer to the housing 200 of the household appliance 1000 in the front-rear direction. During the process of the lifting mechanism 100 lifting the first storage rack 300, the risk of interference between the first storage rack 300 and other structures arranged in the upper space of the housing 200 is larger; when the value of the α angle is smaller, the lifting height of the first storage rack 300 is smaller, and the first storage rack 300 is farther away from the housing 200 of the household appliance 1000 in the front-rear direction. During the process of the lifting mechanism 100 lifting the first storage rack 300, the risk of interference between the first storage rack 300 and other structures arranged in the upper space of the housing 200 is smaller.

[0140] When the value of the α angle is 70°, the first storage rack 300 can be lifted to a relatively high position (in the embodiment where the household appliance 1000 has a second storage rack 400, the position of the bottom of the first storage rack 300 is higher than the bottom of the second storage rack 400), which meets the requirement of the large-height lifting of the first storage rack 300 and improves the user experience.

[0141] It should be emphasized that the number of the swing arms 2 provided is not limited. It can be only one, or two can be provided. In the embodiment where two swing arms 2 are provided, part of the structure of the lifting mechanism 100 forms a four-bar linkage structure, and it is a parallelogram four-bar linkage mechanism.

[0142] To ensure the stability of the lifting mechanism 100 during the process of lifting the first storage rack 300, the lifting mechanism 100 adopts a four-bar linkage mechanism, that is, in the form of the fixed arm 1, two swing arms 2 and a connecting member. The four-bar linkage mechanism is set as a parallelogram linkage mechanism. Therefore, for the installation positions of the two swing arms 2 on the fixed arm 1, one can be above and the other can be below. In some embodiments, when the two swing arms 2 are both at the lower swing limit position, the two swing arms 2 include a first swing arm 2 on the left side and a second swing arm 2 on the right side. The installation position of the first swing arm 2 on the fixed arm 1 is lower, and the installation position of the second swing arm 2 on the fixed arm 1 is higher.

[0143] For the first sliding part 23 and the second sliding part 24, they are both arranged on the second swing arm 2. In this way, when the second swing arm 2 corresponds to the upper swing limit position, the upper end of the second swing arm 2 is higher than the upper end of the first swing arm 2. At this time, it is convenient for the second swing arm 2 to cooperate with the locking member 3 arranged on the storage rack for locking.

[0144] In addition, it should be noted that inside the household appliance 1000, two lifting mechanisms 100 are provided and arranged at intervals in the left-right direction, that is, two support points are formed on both sides of the first storage rack 300 in the left-right direction. By setting two lifting mechanisms 100, the first storage rack 300 can be stably lifted.

[0145] Of course, in the embodiment where two lifting mechanisms 100 are provided, two or four corresponding swing arms 2 can be provided to jointly support the first storage rack 300.

[0146] In the lifting mechanism 100, for the swing arm 2 and the fixed arm 1, a damping member 6 such as a gas strut or a spring can be arranged between the swing arm 2 and the fixed arm 1 to reduce the force exerted by the user during the process of lifting or lowering the first storage rack 300.

[0147] The specific implementation forms of the guide rail and the sliding part are not limited. The guide rail can be configured as a guide groove, and the sliding part can be configured as a sliding column, a pulley, etc. It can also be that the guide rail is configured as a guide rib, and the sliding part is 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. It can also be directly setting the sliding part as a sliding protrusion and then opening a sliding groove on it, etc. This is not limited here.

[0148] In an embodiment of the present utility model, it can be understood that the length of the limiting groove 421 is too long, which is not convenient for the sliding column to slide in and out. When the length of the limiting groove 421 is too short, the limiting effect on the sliding column is not good. The length of the limiting groove 421 is L, and the width of the sliding column is D. Wherein, D / 3 ≤ L ≤ 2 / 3D. When L ≤ 2 / 3D, it is convenient for the sliding column to slide into or out of the limiting groove. When L ≤ 2 / 3D, the sliding part can be limited to prevent the swing arm 2 and the locking member 3 from moving relative to each other in the front-rear direction.

[0149] In a further embodiment, the lifting mechanism 100 further includes a slide rail structure. The slide rail structure includes multiple sections of slide rails that are telescopically and slidably connected to each other. The multiple sections of slide rails at least include a first-section slide rail 51 and a last-section slide rail 52. The first-section slide rail 51 is directly or indirectly connected to the second hinge mounting portion 22, and the last-section slide rail 52 is connected to the first storage rack 300. The swing arm 2 can swing the first storage rack 300 forward and upward from the bottom waiting-to-be-lifted position to the top lifted limit position. When the first storage rack 300 is in the top lifted limit position, the multiple sections of slide rails extend in the front-rear direction and can slide relative to each other, so that the first storage rack 300 can slide forward to the top locking position.

[0150] The connecting member 53 is connected to the first-section slide rail 51, and the connection can be achieved by bonding or welding. That is, the connecting member 53 can be adhered to the first-section slide rail 51 by using an adhesive. Of course, welding can also be used. For example, both the connecting member 53 and the first-section slide rail 51 are made of metal materials, such as iron or steel, and the connecting member 53 can be welded to the first-section slide rail 51.

[0151] In some embodiments, the connecting member 53 and the first-section slide rail 51 are integrally formed, that is, the connecting member 53 and the first-section slide rail 51 are one component. In this way, the number of parts is reduced, and the assembly time and cost are saved.

[0152] In the technical solution of this embodiment, by setting the relative movement between the first-section slide rail 51 and the last-section slide rail 52 of the slide rail structure, the first storage rack 300 can move linearly in the front-rear direction relative to the connecting member 53, and the first storage rack 300 can also slide forward to the top locking position.

[0153] There are two swing arms, and the lifting mechanism 100 further includes a connecting member 53 connected to the first-section slide rail 51. The second hinge mounting portions 22 of the two swing arms are both hinged to the connecting member 53.

[0154] In the technical solution of this embodiment, two swing arms are provided, and the second hinge mounting portions 22 of the two swing arms are both hinged to the connecting member 53, so that the two swing arms, the fixed arm and the connecting member 53 can form a four-bar linkage structure, and it is a parallelogram four-bar mechanism, which improves the stability of the first storage rack 300 during the lifting process.

[0155] To achieve the above object, the present application also proposes a household appliance 1000, including a housing 200, a lifting mechanism 100 and a first storage rack 300. The housing 200 forms a receiving cavity 201; the lifting mechanism 100 includes the lifting mechanism 100 described in any one of the above, and the fixed arm 1 of the lifting mechanism 100 is provided on the side wall 2012 of the receiving cavity 201; the first storage rack 300 is hingedly connected to the swing arm 2 of the lifting mechanism 100; the lifting mechanism 100 enables the first storage rack 300 to switch between a bottom position to be lifted and a top lifting limit position.

[0156] In some household appliances 1000, there is only one storage rack, some have two, and some have more. In the technical solution of the present invention, a second storage rack 400 is further provided in the receiving cavity 201. Corresponding to the top lifting limit position, the lower end of the first storage rack 300 protrudes upward from the lower end of the second storage rack 400, that is, at the lifting limit position of the first storage rack 300, the lifting height of the first storage rack 300 is higher than that of the second storage rack 400. At this time, the lifting height is relatively large, reducing the frequency of the user bending down and improving the user experience.

[0157] It should be noted that in the embodiment where there are two storage racks in the household appliance 1000, the first storage rack 300 is a lower storage rack, and the second storage rack 400 is an upper storage rack. When the first storage rack 300 is in the top storage position and the second storage rack 400 is in the receiving cavity 201, the first storage rack 300 is below the second storage rack 400 and they are arranged opposite to each other.

[0158] In view of the above-mentioned embodiments, the user needs to alternately use the first storage rack 300 and the second storage rack 400. That is, when using the first storage rack 300 to lift, try to keep the second storage rack 400 in the receiving cavity 201; when using the second storage rack 400, try to keep the first storage rack 300 in the receiving cavity 201, or try not to lift the second storage rack 400.

[0159] Of course, for the upper ends of the first storage rack 300 and the second storage rack 400, in some embodiments, corresponding to the top lifting limit position and the top lifting locking position of the first storage rack 300, the upper end of the first storage rack 300 protrudes upward from the upper end of the second storage rack 400. That is, on the premise that the depths of the first storage rack 300 and the second storage rack 400 are the same, the first storage rack 300 can be in a higher position.

[0160] In the product where the household appliance 1000 is a dishwasher, the first storage rack 300 corresponds to the lower dish basket of the dishwasher, and the second storage rack 400 corresponds to the upper dish basket of the dishwasher. When using the lower dish basket of the dishwasher, the lifting mechanism 100 lifts the lower dish basket of the dishwasher to a position higher than the upper dish basket. This state has the same operating height as when the user uses the upper dish basket of the dishwasher, or a higher height, and the user's operating experience will be better.

[0161] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the technical concept of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A locking member, characterized in that, It is used on the lifting mechanism of a household appliance and is arranged on the first storage rack to cooperate with the swing arm. When the swing arm swings the first storage rack upward to the top lifting limit position and the first storage rack moves forward to the top locking position, the relative movement between the swing arm and the first storage rack is restricted. The locking member includes: A lock body for being installed on the first storage rack. One side of the lock body in the left-right direction is the installation side. At least one guide rail is arranged on the installation side of the lock body. The at least one guide rail includes an arc section connecting the head end of the guide rail, and the arc section is used to provide a sliding arc track for the sliding part of the swing arm; and, A limit structure is connected to the tail end of the guide rail and extends backward. The limit structure is used to limit the sliding part on the swing arm when the first storage rack moves to the top locking position, so as to restrict the relative movement between the swing arm and the first storage rack.

2. The locking member according to claim 1, characterized in that There are at least two of the guide rails, and the two guide rails include: A first guide rail. The arc section of the first guide rail is a first arc section, and the first arc section is arranged in an arc shape that is backward and downward from the head end to the tail end of the first guide rail. The first guide rail is used for sliding cooperation with the first sliding part of the swing arm; and, A second guide rail is located below the first guide rail. The arc section of the second guide rail is a second arc section, and the second arc section is arranged in an arc shape that is backward and upward from the head end to the tail end of the second guide rail; the second guide rail is used for sliding cooperation with the second sliding part of the swing arm.

3. The locking member according to claim 2, wherein, The limit structure includes: A first limit part corresponding to the tail end of the first guide rail and extending backward, for performing up-and-down limitation on the first sliding part of the swing arm.

4. The locking member according to claim 3, wherein The first guide rail is arranged as a first guide groove; The tail end of the first guide groove penetrates through the lock body downward to form a lower end notch, and a stop surface is formed at the periphery of the lower end notch and at a rear position, and the stop surface forms the first limit part.

5. The locking member according to claim 3, wherein The first guide rail is arranged as a first guide rib; The first limit part includes a limit boss arranged at the rear side of the tail end of the first guide rib.

6. The locking member according to claim 2, characterized in that, The limit structure further includes: A second limit part corresponding to the tail end of the second guide rail and extending backward, for limiting the second sliding part of the swing arm.

7. The locking member according to claim 6, wherein, The second guide rail is arranged as a second guide groove; The second limit part includes a limit groove connected to the tail end of the second guide groove and extending backward.

8. The locking member according to claim 7, characterized in that, The limit groove is arranged in an upward inclined manner in the front-to-back direction.

9. The locking member according to claim 7, wherein, At the connection between the limit groove and the second guide groove, a clamping rib is arranged on the inner side wall of the limit groove.

10. The locking member according to claim 7, characterized in that, A deformation groove is arranged on the installation side of the lock body around the limit groove.

11. The locking member according to claim 10, characterized in that, There are multiple deformation grooves, and the multiple deformation grooves are arranged at intervals.

12. The locking member according to claim 10, wherein, The distance between the deformation groove and the limit groove is L1, where 0.5mm ≤ L1 ≤ 1.5mm; and / or, The width of the deformation groove is L2, where 1mm ≤ L2 ≤ 2mm.

13. The locking member according to claim 10, characterized in that, At the connection between the limit groove and the second guide groove, a clamping rib is arranged on the inner side wall of the limit groove, and the deformation groove corresponds to the clamping rib.

14. The locking member according to claim 6, wherein, The second guide rail is provided as a second guide rib, and the second limiting portion includes a second limiting rib connected to the tail end of the second guide rib.

15. The locking member according to claim 2, characterized in that, The head end of the second guide rail is lower than the highest point of the second guide rail.

16. A lifting mechanism is used to lift the first storage rack of a household appliance, so that the first storage rack can be lifted and switched between a bottom position to be lifted and a top lifting limit position, and the first storage rack has a locking position and an unlocking position corresponding to the top lifting limit position. It is characterized in that, The lifting mechanism includes: A fixed arm for being installed in the receiving cavity of the household appliance; A swing arm assembly including at least one swing arm, on which a first hinge mounting portion and a second hinge mounting portion are formed. The first hinge mounting portion is mounted on the fixed arm, and the second hinge mounting portion is used to directly or indirectly mount the first storage rack; and, A locking member, which is the locking member according to any one of claims 1 to 15.

17. The lifting mechanism according to claim 16, wherein The swing arm has an upper swing limit position for enabling the first storage rack to be in the top lifting limit position. At the upper swing limit position, the swing arm is used to upwardly support the first storage rack, and in the direction from back to front, the swing arm is upwardly inclined.

18. The lifting mechanism according to claim 17, wherein, Correspondingly, at the upper swing limit position, the included angle between the connection line of the rotation centers of the first hinge mounting portion and the second hinge mounting portion on the same swing arm and the horizontal direction is α, and 0° < α ≤ 70°.

19. The lifting mechanism according to claim 16, characterized in that The guide rail is provided as a guide groove, and correspondingly, the sliding portion includes a sliding column; or The guide rail is provided as a guide rib, and correspondingly, the sliding portion includes two sliding columns arranged at intervals.

20. The lifting mechanism according to claim 16, characterized in that, The guide rail includes a second guide rail, the second guide rail is provided as a second guide groove, the limiting structure includes a limiting groove communicated with the tail end of the second guide groove, and the sliding portion includes a sliding column matched with the second guide groove; The length of the limiting groove is L, and the width of the sliding column is D, wherein D / 3 ≤ L ≤ 2 / 3D.

21. The lifting mechanism according to claim 16, wherein, The lifting mechanism further includes a slide rail structure, the slide rail structure includes a plurality of slide rails that are telescopically and slidably connected to each other. The plurality of slide rails at least include a head slide rail and a tail slide rail. The head slide rail is directly or indirectly connected to the second hinge mounting portion, and the tail slide rail is connected to the first storage rack; The swing arm can swing the first storage rack forward and upward from the bottom waiting-to-be-lifted position to the top lifting limit position. When the first storage rack is in the top lifting limit position, the plurality of slide rails extend in the front-back direction and can slide relative to each other, so that the first storage rack can slide forward to the top locking position.

22. The lifting mechanism according to claim 21, wherein, Two swing arms are provided, and the lifting mechanism further includes a connecting member connected to the head slide rail. The second hinge mounting portions of the two swing arms are both hinged to the connecting member.

23. A household appliance, characterized in that, Including: A housing forming a receiving cavity; A lifting mechanism including the lifting mechanism according to any one of claims 16 to 22. The fixed arm of the lifting mechanism is arranged on the side wall of the receiving cavity; and, A first storage rack hingedly connected to the swing arm of the lifting mechanism; The lifting mechanism enables the first storage rack to switch between the bottom waiting-to-be-lifted position and the top lifting limit position.

24. The household appliance according to claim 23, characterized in that, A second storage rack is further provided in the receiving cavity. Correspondingly, at the top lifting limit position, the lower end of the first storage rack is higher than the lower end of the second storage rack.

25. The household appliance according to claim 24, characterized in that, The household appliance includes a dishwasher, the first storage rack includes a lower dish basket, and the second storage rack includes an upper dish basket.

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