Locking member, lifting mechanism, household appliance and dishwasher

Abstract

A locking member (3), a lifting mechanism (100), a household appliance (1000), and a dishwasher. The locking member (3) comprises a lock body (31), a first guide rail (32) and a locking structure (4), wherein the side of the lock body (31) in the left-right direction is a mounting side; the first guide rail (32) is arranged on the mounting side of the lock body (31), and the head end of the first guide rail (32) is used for allowing a first sliding portion on a swing arm (2) to slide in; and the locking structure (4) comprises a locking portion, the locking portion being arranged on one side of the first guide rail (32) and adjacent to the tail end of the first guide rail (32), and the locking portion being elastically movably arranged in the direction of width of the first guide rail (32), enabling itself to elastically reset to a locking position arranged close to the first guide rail (32).

Description

Locking member, lifting mechanism, household appliance and dishwasher

[0001] Related applications

[0002] This application claims priority to Chinese Patent Application No. 202410541707.7, filed on April 30, 2024, Chinese Patent Application No. 202420943958.3, filed on April 30, 2024, Chinese Patent Application No. 202422413198.8, filed on September 30, 2024, Chinese Patent Application No. 202422414298.2, filed on September 30, 2024, and Chinese Patent Application No. 202510541691.4, filed on April 25, 2025, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of household appliances, in particular to a locking member, a lifting mechanism and a household appliance. BACKGROUND

[0004] Household appliances include dishwashers, refrigerators, freezers or storage cabinets, etc., which are usually provided with shelves, and there are low-position shelves in the shelves. Therefore, when storing items in the low-position shelves, the user needs to bend over to take and place the items. Taking the dishwasher as an example, when taking and placing the bowls in the lower basket, if the lower basket is not lifted, the user needs to bend over, which is not good for the user experience.

[0005] Therefore, the industry has set up a lifting mechanism to lift the low-position shelves to a certain height. However, after lifting the shelves, the swing arm of the lifting mechanism may swing due to changes in load, so that the shelves will move up and down, which is not conducive to the user to take and place the items. SUMMARY

[0006] The main purpose of the present application is to provide a locking member, a lifting mechanism and a household appliance, which aims to solve the problem that the swing arm of the lifting mechanism may swing due to changes in load, so that the shelves will move up and down.

[0007] To achieve the above-mentioned purpose, the present application provides a locking member used in the lifting mechanism of a household appliance and arranged on a first shelf, which cooperates with a swing arm to limit the relative movement between the swing arm and the first shelf when the swing arm swings the first shelf upward to a top lifting limit position and the first shelf moves to a top locking position. The locking member comprises a lock body, a first guide rail and a locking structure.

[0008] In an embodiment, one side of the lock body in the left-right direction is the mounting side.

[0009] In an embodiment, the first guide rail is arranged on the mounting side of the lock body, and the first end of the first lock body is configured to allow the first matching part on the swing arm to slide in.

[0010] In an embodiment, the locking structure comprises a locking part arranged on one side of the first guide rail and adjacent to the tail end of the first guide rail, and the locking part is elastically movable along the width direction of the first guide rail and is configured to be elastically reset to a locking position adjacent to the first guide rail.

[0011] In an embodiment, the first guide rail is arranged as a first guide groove, one side wall of the first guide groove is provided with a mounting groove, and the locking part is mounted in the mounting groove.

[0012] The lock body is provided with an elastic member configured to provide an elastic force to the locking part.

[0013] In an embodiment, a communication groove is arranged through both sides of the lock body, and one end of the communication groove is connected to the mounting groove.

[0014] The locking structure further comprises a mounting part on the other side of the lock body and a connecting part arranged through the communication groove and connecting the mounting part and the locking part.

[0015] The elastic member is arranged on the other side of the lock body and between the mounting part and the lock body.

[0016] In an embodiment, a limiting rib is arranged on the side wall of the mounting groove adjacent to the slot, and the lock body is provided with a deformation groove corresponding to the side edge of the mounting groove.

[0017] In an embodiment, the first guide rail is arranged as a first guide groove, the mounting side of the locking part is provided with an avoidance groove connected to the first guide groove, the locking part is arranged in the avoidance groove, one end of the locking part is connected to the lock body, and the other end of the locking part at least partially extends into the first guide groove.

[0018] In an embodiment, the first guide rail is arranged as a first guide groove, the mounting side of the locking part is provided with an avoidance groove connected to the first guide groove, the locking part is arranged in the avoidance groove, one end of the locking part is connected to the lock body, and the other end of the locking part at least partially extends into the first guide groove.

[0019] In an embodiment, the avoidance groove is arranged on the lower side of the first guide groove.

[0020] In an embodiment, the mounting side of the lock body is provided with a second guide slot, which is located above the first guide slot and is used to slide with the second sliding part of the swing arm;

[0021] The mounting side of the lock body is provided with an elastic guide part, one end of which extends to one side of the second guide slot, and the elastic guide part is elastically movably arranged along the left-right direction, so as to elastically avoid the other side of the lock body to guide the second sliding part to slide into the second guide slot.

[0022] In an embodiment, the elastic guide part is arranged on one side of the second guide slot adjacent to the first guide slot.

[0023] In an embodiment, the two ends of the elastic guide part correspond to an inner end and an outer end, the inner end is arranged adjacent to the second guide slot, and the elastic guide part has a guide section arranged adjacent to the outer end and inclined.

[0024] In addition, the application also provides a lifting mechanism for lifting a first shelf of a household appliance, so that the first shelf can be switched between a bottom lifting position and a top lifting limit position, the lifting mechanism comprising: a fixed arm, at least one swing arm and a locking member.

[0025] In an embodiment, the fixed arm is arranged in a receiving cavity of the household appliance.

[0026] In an embodiment, a first hinge mounting part and a second hinge mounting part are formed on the same swing arm, the first hinge mounting part is arranged on the fixed arm, the second hinge mounting part is arranged directly or indirectly on the first shelf, and the swing arm is provided with a first sliding part.

[0027] In an embodiment, the locking member comprises the above-mentioned locking member;

[0028] The locking member comprises;

[0029] The lock body has a mounting side on one side in the left-right direction;

[0030] A first guide rail is arranged on the mounting side of the lock body, and a first end of the first lock body is used to slide the first matching part on the swing arm into the first guide rail;

[0031] The locking structure comprises a locking part, which is arranged on one side of the first guide rail and adjacent to the tail end of the first guide rail, and is elastically movably arranged along the width direction of the first guide rail, so as to be elastically reset to a locking position arranged close to the first guide rail.

[0032] The application also provides a household appliance, comprising:

[0033] a housing formed with a receiving cavity;

[0034] a lifting mechanism, a fixed arm of the lifting mechanism is arranged on a side wall of the receiving cavity, the lifting mechanism comprises;

[0035] a fixed arm, used for being mounted in the receiving cavity of the household appliance;

[0036] at least one swing arm, a first hinged mounting portion and a second hinged mounting portion are formed on the swing arm, the first hinged mounting portion is mounted on the fixed arm, the second hinged mounting portion is used for being directly or indirectly mounted on the first shelf, and the swing arm is formed with a first sliding portion; and

[0037] a locking member, comprising the above-mentioned locking member;

[0038] the locking member comprises;

[0039] a lock body, one side of the lock body in the left-right direction is a mounting side;

[0040] a first guide rail, arranged on the mounting side of the lock body, a head end of the first guide rail is used for the first matching portion on the swing arm to slide into;

[0041] a locking structure, comprising a locking portion, the locking portion is arranged on one side of the first guide rail and adjacent to a tail end of the first guide rail, the locking portion is elastically movably arranged along the width direction of the first guide rail, so as to be elastically reset to a locking position arranged close to the first guide rail; and

[0042] a first shelf, hingedly connected to the swing arm of the lifting mechanism;

[0043] the lifting mechanism enables the first shelf to switch between a bottom standby lifting position and a top lifting limit position;

[0044] in an embodiment, the household appliance further comprises a slide rail structure, the slide rail structure comprises multiple slide rails which are telescopically connected to each other, the multiple slide rails at least comprise a head slide rail and a tail slide rail, the head slide rail is directly or indirectly connected to the second hinged portion, and the tail slide rail is connected to the first shelf;

[0045] the swing arm can swing the first shelf from the bottom standby lifting position to the top lifting limit position forward and upward, when the first shelf is in the top lifting limit position, the multiple slide rails are arranged in an extended manner forward and backward, and can relatively slide, so that the first shelf can slide to a top locking position.

[0046] In an embodiment, two swing arms are provided, and the lifting mechanism further comprises a connecting member connected to the first section sliding rail, and the second connecting portions of the two swing arms are both hingedly connected to the connecting member, and the connecting member is installed on the first shelf.

[0047] In an embodiment, a second shelf is further provided in the accommodating cavity, and the lower end of the first shelf is higher than the lower end of the second shelf at the top limit position.

[0048] In an embodiment, the household appliance comprises a dishwasher, the first shelf is arranged as a lower basket, and the second shelf is arranged as an upper basket.

[0049] The application provides a lifting mechanism, which comprises a fixed arm, two swing arms and a horizontal arm.

[0050] In an embodiment, each of the swing arms has a connecting end and a following end, and each of the connecting ends is hingedly connected to the fixed arm.

[0051] In an embodiment, the horizontal arm is hingedly connected to the following ends of the two swing arms, the horizontal arm can move upward and forward, and the two swing arms can swing following the movement of the horizontal arm.

[0052] The swing arms have a swing stroke, the swing stroke defines a swing angle of the swing arms, and the swing angle is obtuse.

[0053] In an embodiment, the swing angle is α, and 90°<α≤160°.

[0054] In an embodiment, the projections of the two swing arms in a first vertical plane formed by the left-right direction and the up-down direction at least partially overlap.

[0055] The two swing arms comprise a first swing arm and a second swing arm, the first swing arm is connected to the fixed arm through a first hinged shaft, the second swing arm is connected to the fixed arm through a second hinged shaft, the second hinged shaft has a longitudinal distance along the up-down direction and a transverse distance along the front-back direction relative to the first hinged shaft, and the longitudinal distance is greater than the transverse distance.

[0056] In an embodiment, the second hinged shaft is located on the front side and the upper side of the first hinged shaft.

[0057] In an embodiment, the width of the narrowest part of the first swing arm is L1, the width of the narrowest part of the second swing arm is L2, the longitudinal distance is defined as y, and the transverse distance is defined as x, wherein:

[0058] 0<x≤L1+L2.

[0059] In an embodiment, 0.5(L1+L2)≤y≤2(L1+L2).

[0060] In an embodiment, the projections of the two swing arms in a first vertical plane constituted by the left-right direction and the up-down direction are at least partially overlapped.

[0061] The limit position of the horizontal arm includes a lower limit position, corresponding to which the two swing arms abut to stop swinging backward.

[0062] In an embodiment, at least one of the two swing arms is a convex swing arm, which includes a swing arm body and an abutting convex portion provided at a side end of the swing arm body facing the other swing arm, the abutting convex portion being used to abut with the other swing arm.

[0063] In an embodiment, the other swing arm is provided with a matching concave portion facing the convex swing arm, the matching concave portion being used to match with the abutting convex portion.

[0064] In an embodiment, in a direction along the abutting convex portion towards the matching concave portion, the cross-sectional width of the abutting convex portion is gradually reduced, and correspondingly, the cross-sectional width of the concave cavity of the matching concave portion is gradually reduced.

[0065] In an embodiment, the abutting convex portion has two side edges in the length direction of the swing arm body, at least one of the side edges being obliquely arranged.

[0066] The matching concave portion has an inner side wall arranged obliquely.

[0067] In an embodiment, the convex swing arm is hingedly mounted to the fixed arm by a first connecting shaft, and the abutting convex portion is arranged adjacent to the first connecting shaft.

[0068] In an embodiment, the limit position of the horizontal arm includes a first upper limit position, corresponding to which the abutting convex portion is at a side of the end of the other swing arm connected to the fixed arm, so as to avoid the other swing arm.

[0069] In an embodiment, the abutting convex portion is integrally formed with the swing arm body.

[0070] In an embodiment, the projections of the two swing arms in a first vertical plane constituted by the left-right direction and the up-down direction are at least partially overlapped.

[0071] The limit position of the horizontal arm includes a first upper limit position, corresponding to which the two swing arms abut to stop swinging upward.

[0072] In an embodiment, each of the swing arms has a straight edge segment arranged adjacent to the horizontal arm, and the two swing arms are in edge abutment at least at the straight edge segments at the first upper limit position.

[0073] In an embodiment, each of the swing arms has a first hinge center point hingedly connected to the fixed arm, and a second hinge center point hingedly connected to the horizontal arm in a second vertical plane formed by the front-rear direction and the up-down direction, and a straight line passing through the first hinge center point and the second hinge center point is defined as a center line;

[0074] Opposite sides of the straight edge segments of the two swing arms are arranged in parallel to the center line.

[0075] In an embodiment, projections of the two swing arms in a first vertical plane formed by the left-right direction and the up-down direction are arranged in staggered manner, the two swing arms include a first swing arm and a second swing arm, the first swing arm is connected to the fixed arm through a first hinge shaft, the second swing arm is connected to the fixed arm through a second hinge shaft, the first swing arm is connected to the horizontal arm through a third hinge shaft, and the second swing arm is connected to the horizontal arm through a fourth hinge shaft;

[0076] The limit positions of the horizontal arm include a second upper limit position, and the first hinge shaft, the second hinge shaft, the third hinge shaft and the fourth hinge shaft are arranged in line in a second vertical plane formed by the front-rear direction and the up-down direction at the second upper limit position.

[0077] In an embodiment, the lifting mechanism further includes a locking structure, the locking structure includes a fixed part movably mounted relative to the horizontal arm along the front-rear direction, and at least one of the two swing arms is arranged as a locking swing arm;

[0078] During movement of the fixed part relative to the horizontal arm along the front direction, the locking swing arm can be downwardly stopped.

[0079] In an embodiment, one of the fixed part and the locking swing arm is provided with a first sliding shaft, and the other is provided with a first matching sliding groove, the first matching sliding groove includes at least a horizontal groove segment extending along the front-rear direction, and during movement of the fixed part relative to the horizontal arm along the front direction, the first sliding shaft can be slid rearwardly into the horizontal groove segment to make the locking swing arm downwardly stopped.

[0080] In an embodiment, the first matching sliding groove further includes an arc-shaped groove segment connected to the front side of the horizontal groove segment, and an extension path of the arc-shaped groove segment is adapted to relative rotation of the fixed part and the locking swing arm.

[0081] In an embodiment, the first matching sliding slot is arranged on the fixed part, and the arc-shaped slot segment is arranged through the lower end surface of the fixed part away from the end of the horizontal slot segment.

[0082] In an embodiment, the side end of the locking swing arm away from the other swing arm is provided with a protruding arm part extending along the width direction of the locking swing arm, and the first sliding shaft is arranged on the protruding arm part.

[0083] On the center line of the first matching sliding slot, the arc-shaped vertex of the arc-shaped slot segment is higher than the horizontal slot segment.

[0084] In an embodiment, one of the fixed part and the locking swing arm is further provided with a second sliding shaft, and the other is further provided with a second matching sliding slot, and the second sliding shaft is slidingly arranged in the second matching sliding slot.

[0085] In an embodiment, the first sliding shaft and the second sliding shaft are both arranged on the locking swing arm, and the first sliding shaft is on the side of the second sliding shaft away from the fixed arm.

[0086] In an embodiment, the second matching sliding slot is arranged on the fixed part, and the second matching sliding slot is arranged through the rear end surface of the fixed part.

[0087] The application further provides a dishwasher, which comprises a lifting mechanism, and the lifting mechanism comprises:

[0088] a fixed arm;

[0089] two swing arms, each of which has a connecting end and a following end, and each of the connecting ends is hingedly arranged on the fixed arm; and

[0090] a horizontal arm, which is hingedly arranged on the following ends of the two swing arms, and the horizontal arm can move upward and forward, and the two swing arms can swing following the movement of the horizontal arm.

[0091] The swing arms have a swing stroke, the swing stroke defines a swing angle of the swing arms, and the swing angle is set as an obtuse angle.

[0092] In an embodiment, the dishwasher further comprises:

[0093] a cabinet, which has a containing space formed therein, and the fixed arm of the lifting mechanism is arranged in the containing space; and

[0094] a lower basket, which is connected with a slide rail, and the slide rail comprises the horizontal arm of the lifting mechanism.

[0095] In an embodiment, two lifting mechanisms are arranged, and are arranged on the left and right sides of the lower basket along the left-right direction.

[0096] The present application provides a locking member for a household appliance, which is arranged on a first shelf and used to cooperate with a swing arm of a lifting mechanism of the household appliance to limit the relative movement between the swing arm and the first shelf when the swing arm swings the first shelf upward to a top lifting limit position and the first shelf moves to a top locking position. The locking member comprises a locking body, at least one guide rail and a limiting structure.

[0097] In an embodiment, one side of the locking body in the left-right direction is a mounting side.

[0098] In an embodiment, the at least one guide rail is arranged on the mounting side, and the guide rail has an arc-shaped section connected to a leading end thereof, which provides an arc-shaped sliding track for a sliding part on the swing arm.

[0099] In an embodiment, the limiting structure is arranged corresponding to a trailing end of the guide rail, and the limiting structure limits the sliding part in the up-down and / or front-rear direction when the first shelf moves to the top locking position.

[0100] In an embodiment, the guide rail comprises a first guide rail for sliding cooperation with a first sliding part of the swing arm, and the arc-shaped section of the first guide rail is a first arc-shaped section arranged in a downward curve from the leading end to the trailing end of the first guide rail.

[0101] The limiting structure comprises a first limiting part arranged corresponding to the trailing end of the first arc-shaped section, which limits the first sliding part in the up-down direction.

[0102] In an embodiment, the first guide rail is arranged as a first guide groove, and the trailing end of the first guide groove penetrates downward through the locking 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, which forms the first limiting part.

[0103] In an embodiment, the trailing end of the first guide groove penetrates through the lower end of the locking body, and the lower end surface of the locking body forms the stop surface.

[0104] In an embodiment, the first guide rail is arranged as a first guide rib.

[0105] The first limiting part comprises a limiting boss arranged on the rear side of the trailing end of the first guide rib.

[0106] In an embodiment, the guide rail comprises a second guide rail, which is arranged on the front side of the first guide rail and on the lower side of the first guide rail, and is used for sliding cooperation with a second sliding part of the swing arm.

[0107] The second guide rail comprises:

[0108] a second arc-shaped segment, which is arranged in an arc shape gradually upward from the head end to the tail end of the second guide rail, the arc-shaped segment of the second guide rail being the second arc-shaped segment; and

[0109] a second flat segment, one end of which is connected to the tail end of the second arc-shaped segment and the other end of which extends rearward;

[0110] The limiting structure comprises a second limiting part arranged corresponding to the second flat segment, the second limiting part being used to limit the second sliding part forward and backward.

[0111] In an embodiment, the second guide rail is arranged as a second guide groove.

[0112] The second limiting part is arranged as a limiting groove, the limiting groove being in communication with the second flat segment and extending rearward, or the second flat segment constituting the limiting groove.

[0113] In an embodiment, the limiting groove is arranged in an inclined direction from front to rear upward.

[0114] In an embodiment, an included angle between the limiting groove and the front-rear direction is α, where 15°≤α≤60°.

[0115] In an embodiment, an inner side wall of the limiting groove is provided with a clamping rib at a connection between the limiting groove and the second guide groove.

[0116] In an embodiment, a deformation groove is arranged on the periphery of the limiting groove on the mounting side of the lock body.

[0117] The present application proposes a lifting mechanism for lifting a first shelf of a household appliance, so that the first shelf can be switched between a bottom position to be lifted and a top position of lifting limit, wherein the lifting mechanism comprises:

[0118] a fixed arm arranged in a receiving cavity of the household appliance;

[0119] a swing arm assembly, which at least comprises a first swing arm, two ends of the first swing arm being provided with a first hinge mounting part and a second hinge mounting part corresponding, the first hinge mounting part being mounted on the fixed arm, and the second hinge mounting part being used to be directly or indirectly mounted on the first shelf; and

[0120] a locking member, which is the locking member as described above.

[0121] In an embodiment, the lifting mechanism further comprises a slide rail structure, the slide rail structure comprises a plurality of slide rails connected to each other in an extendable and retractable manner, the plurality of slide rails comprises at least a first slide rail and a last slide rail, the first slide rail is directly or indirectly connected to the second hinge part, and the last slide rail is connected to the first shelf.

[0122] The swing arm can swing the first shelf from a bottom standby lifting position to a top lifting limit position, the plurality of slide rails are arranged in an extending manner in front and back directions and can slide relative to each other, so that the first shelf can slide to a top locking position.

[0123] In an embodiment, two swing arms are provided, and the lifting mechanism further comprises a connecting member connected to the first slide rail, and the second hinge mounting part of each of the two swing arms is hingedly connected to the connecting member.

[0124] The present application provides a household appliance, wherein the household appliance comprises:

[0125] A housing is formed with a receiving cavity;

[0126] A lifting mechanism comprising the lifting mechanism as described above, and a fixed arm of the lifting mechanism is arranged on a side wall of the receiving cavity; and

[0127] A first shelf is hingedly connected to a swing arm of the lifting mechanism.

[0128] The lifting mechanism enables the first shelf to switch between a bottom standby lifting position and a top lifting limit position.

[0129] In an embodiment, a second shelf is further arranged in the receiving cavity, and the lower end of the first shelf is higher than the lower end of the second shelf at the top lifting limit position.

[0130] In an embodiment, the household appliance comprises a dishwasher, the first shelf is arranged as a lower basket, and the second shelf comprises an upper basket. BRIEF DESCRIPTION OF DRAWINGS

[0131] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor based on the drawings shown.

[0132] FIG. 1 is a structural schematic view of an embodiment of the lifting mechanism provided by the present application;

[0133] Fig. 2 is a partial enlarged view of A in Fig. 1;

[0134] Fig. 3 is a partial perspective view of the lifting mechanism of Fig. 1;

[0135] Fig. 4 is a partial enlarged view of B in Fig. 3;

[0136] Fig. 5 is a rear view of the lifting mechanism of Fig. 1;

[0137] Fig. 6 is a partial enlarged view of C in Fig. 5;

[0138] Fig. 7 is a perspective view of the lifting mechanism of Fig. 1 (the locking portion locks the first sliding portion at the tail end of the first guide rail);

[0139] Fig. 8 is a partial enlarged view of D in Fig. 7;

[0140] Fig. 9 is a structural view of another embodiment of the lifting mechanism of Fig. 1;

[0141] Fig. 10 is a partial enlarged view of E in Fig. 9;

[0142] Fig. 11 is a structural view of still another embodiment of the lifting mechanism of Fig. 1;

[0143] Fig. 12 is a partial enlarged view of F in Fig. 11;

[0144] Fig. 13 is another structural view of the lifting mechanism of Fig. 1;

[0145] Fig. 14 is a partial enlarged view of G in Fig. 13;

[0146] Fig. 15 is a partial enlarged view of H in Fig. 14;

[0147] Fig. 16 is a perspective view of an embodiment of the household appliance provided in the present application (the first shelf is at the bottom storage position, and the swing arm of the lifting mechanism is at the lower swing limit position);

[0148] Fig. 17 is a perspective view of the household appliance of Fig. 16 containing the lifting mechanism and the first shelf;

[0149] Fig. 18 is a front view of the household appliance of Fig. 16 containing the lifting mechanism and the first shelf;

[0150] Fig. 19 is a perspective view of the household appliance of Fig. 16 (the first shelf is at the bottom storage position, and the swing arm of the lifting mechanism is at the lower swing limit position);

[0151] Fig. 20 is a front view of the household appliance of Fig. 19 containing the lifting mechanism and the first shelf;

[0152] Fig. 21 is a perspective view of the household appliance of Fig. 16 (the first shelf is in the top, raised limit position, and the swing arm of the lifting mechanism is in the upper swing limit position);

[0153] Fig. 22 is a front view of the household appliance of Fig. 21, showing the lifting mechanism and the first shelf;

[0154] Fig. 23 is a perspective view of the household appliance of Fig. 16 (the first shelf is in the top, locked position, and the swing arm of the lifting mechanism is in the upper swing limit position);

[0155] Fig. 24 is a front view of the household appliance of Fig. 23, showing the lifting mechanism and the first shelf;

[0156] Fig. 25 is a front view of an embodiment of a dishwasher provided by the present application (the lower basket is in the lowermost position);

[0157] Fig. 26 is a front view of the dishwasher of Fig. 25 (the lower basket is in the middle position);

[0158] Fig. 27 is a front view of the dishwasher of Fig. 25 (the lower basket is in the uppermost position);

[0159] Fig. 28 is a front view of the lifting mechanism of Fig. 25 (the horizontal arm is in the lower limit position) assembled with the lower basket;

[0160] Fig. 29 is a front view of the lifting mechanism of Fig. 25 (the horizontal arm is in the first upper limit position) assembled with the lower basket;

[0161] Fig. 30 is a front view of the lifting mechanism of Fig. 25 (the horizontal arm is in the lower limit position);

[0162] Fig. 31 is a front view of the lifting mechanism of Fig. 25 (the horizontal arm is in the first upper limit position);

[0163] Fig. 32 is a front view (looking from the inside to the outside of the dishwasher) of the lifting mechanism of Fig. 25 (the horizontal arm is in the first upper limit position) assembled with the lower basket;

[0164] Fig. 33 is a front view of the lifting mechanism of Fig. 25 (the horizontal arm is in the second upper limit position) assembled with the lower basket;

[0165] Fig. 34 is a front view of the lifting mechanism of Fig. 25 (the horizontal arm is in the first upper limit position, and the swing arm is not locked) assembled with the lower basket;

[0166] Fig. 35 is an enlarged view of part of the structure of Fig. 34;

[0167] Fig. 36 is a front view structural schematic diagram of the lifting mechanism (the horizontal arm is at the first upper limit position, and the swing arm is locked) and the lower basket assembly in Fig. 25;

[0168] Fig. 37 is an enlarged schematic diagram of part of the structure in Fig. 36;

[0169] Fig. 38 is a perspective view structural schematic diagram of part of the structure of the lifting mechanism and the fixed part in Fig. 25;

[0170] Fig. 39 is a front view structural schematic diagram of part of the structure of the fixed part and the lower basket assembly in Fig. 25;

[0171] Fig. 40 is a perspective view structural schematic diagram of the second swing arm in Fig. 25;

[0172] Fig. 41 is a structural schematic diagram of an embodiment of the household appliance provided by the present application;

[0173] Fig. 42 is a structural schematic diagram of an embodiment of the locking member in Fig. 41;

[0174] Fig. 43 is a structural schematic diagram of another embodiment of the locking member in Fig. 41;

[0175] Fig. 44 is a structural schematic diagram of still another embodiment of the locking member in Fig. 41;

[0176] Fig. 45 is a structural schematic diagram of still another embodiment of the locking member in Fig. 41;

[0177] Fig. 46 is a perspective view structural schematic diagram of an embodiment of the household appliance provided by the present application (the first shelf is at the bottom storage position, and the swing arm of the lifting mechanism is at the lower swing limit position);

[0178] Fig. 47 is a perspective view structural schematic diagram of the household appliance in Fig. 46 containing the lifting mechanism and the first shelf;

[0179] Fig. 48 is a front view structural schematic diagram of the household appliance in Fig. 46 containing the lifting mechanism and the first shelf;

[0180] Fig. 49 is a perspective view structural schematic diagram of the household appliance in Fig. 46 (the first shelf is at the bottom to-be-lifted position, and the swing arm of the lifting mechanism is at the lower swing limit position);

[0181] Fig. 50 is a front view structural schematic diagram of the household appliance in Fig. 49 containing the lifting mechanism and the first shelf;

[0182] Fig. 51 is a perspective view structural schematic diagram of the household appliance in Fig. 46 (the first shelf is at the top lifted limit position, and the swing arm of the lifting mechanism is at the upper swing limit position);

[0183] Fig. 52 is a front view structural schematic diagram of the household appliance in Fig. 51 containing the lifting mechanism and the first shelf;

[0184] Fig. 53 is a perspective view of the household appliance of Fig. 46 (the first shelf is in the top-locked position and the swing arm of the lifting mechanism is in the upper swing limit position);

[0185] Fig. 54 is a front view of the lifting mechanism and the first shelf of Fig. 53.

[0186] BRIEF DESCRIPTION OF THE DRAWINGS 100, lifting mechanism; 1, fixed arm; 2, swing arm; 21, first hinged mounting portion; 22, second hinged mounting portion; 23, first sliding portion; 24, second sliding portion; 3, locking member; 31, lock body; 311, mounting side; 32, first guide rail; 321, first guide groove; 33, second guide groove; 34, mounting groove; 341, first groove section; 342, second groove section; 343, limiting protrusion; 35, elastic member; 36, accommodating groove; 361, enclosing barrier; 37, deformation groove; 38, avoiding groove; 39, elastic guide portion; 39a, elastic cantilever; 391, inner end; 391a, stop plate; 392, outer end; 392a, guide section; 4, locking structure; 41, locking portion; 42, mounting portion; 43, connecting portion; 44, guide portion; 45, housing; 1000, household appliance; 200, housing; 201, accommodating cavity; 2012, side wall; 300, first shelf; 400, second shelf; 500, slide rail structure; 501, first section of slide rail; 502, second section of slide rail; 503, intermediate slide rail; 2a, first swing arm; 2b, second swing arm; 20, first hinged shaft; 54, second hinged shaft; 51, abutting protrusion; 52, matching recess; 53, straight edge section; 25, third hinged shaft; 26, fourth hinged shaft; 27, first sliding shaft; 28, protruding arm portion; 29, second sliding shaft; 6, horizontal arm; 7, fixed portion; 71, first matching sliding groove; 711, horizontal groove section; 712, arc-shaped groove section; 72, second matching sliding groove; 2000, dishwasher; 600, machine housing; 700, lower basket; 3211, first arc-shaped section; 322, first guide rib; 330, second guide rail; 3301, second guide groove; 3311, second arc-shaped section; 3312, second gradual change section; 332, second guide rib; 340, first limiting portion; 341, abutting surface; 342, limiting protrusion; 350, second limiting portion; 351, limiting groove; 360, clamping rib; 370, deformation groove; 40, connecting member.

[0187] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0188] With reference to the drawings and embodiments disclosed herein, it should be apparent that the described embodiments are only a small number of the many embodiments that can be implemented in accordance with the application. Any other embodiments that are apparent to those skilled in the art, based on the disclosure provided herein, are within the scope of the present application.

[0189] It should be noted that if the present application has a direction indication (such as up, down, left, right, front, back, etc.), the direction indication is only used to explain the relative position relationship, movement, etc. between the components in a certain posture, and if the posture changes, the direction indication will also change accordingly.

[0190] In addition, if the present application has a description of "first", "second" and the like, the description of "first", "second" and the like is only for description purpose, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, "and / or" or "and / or" appears throughout the text, which means that the three parallel schemes include "A and / or B", which includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection claimed in the present application.

[0191] Household appliances include dishwashers, refrigerators, freezers or storage cabinets, etc. which are usually provided with shelves, and there are low-position shelves with relatively low installation positions. Therefore, when storing items in the low-position shelf, the user needs to bend down to take and place the items. Taking the dishwasher as an example, when taking and placing the bowls in the lower basket, if the lower basket is not lifted, the user needs to bend down, and the user experience is not good.

[0192] Therefore, the industry has set up a lifting mechanism to lift the low-position shelf to a certain height, however, after lifting the shelf, the user takes and places the items, and the swing arm of the lifting mechanism may swing due to load changes, so that the shelf will move up and down, which is not conducive to the user to take and place the items.

[0193] Therefore, the present application provides a locking member to solve the problem that the swing arm of the lifting mechanism may swing due to load changes, so that the shelf will move up and down. Figures 1 to 15 are structural schematic diagrams of the lifting mechanism provided by the present application; Figures 16 to 24 are structural schematic diagrams of the household appliance provided by the present application.

[0194] Please refer to FIG. 1 to FIG. 4, in an embodiment of the present application, the locking member 3 is used in the lifting mechanism 100 of the household appliance 1000, and is arranged on the first shelf 300, and is used to cooperate with the swing arm 2 to limit 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 lifting limit position and the first shelf 300 moves to the top locking position, the locking member 3 comprises a lock body 31, a first guide rail 32 and a locking structure 4, one side of the lock body 31 in the left-right direction is a mounting side 311, the first guide rail 32 is arranged on the mounting side 311 of the lock body 31, the first end of the first guide rail 32 is used for the first sliding part 23 on the swing arm 2 to slide in, the locking structure 4 comprises a locking part 41, the locking part 41 is arranged on one side of the first guide rail 32 and is arranged adjacent to the tail end of the first guide rail 32, the locking part is elastically movably arranged along the width direction of the first guide rail 32, and can be moved to the locking position close to the tail end of the first guide rail under the action of elastic force.

[0195] In the present application, the user is used as a reference direction, forward is the direction towards the user, or the side of the household appliance 1000 provided with a door body, 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 a reference. One side of the lock body 31 in the left-right direction is the mounting side 311, the other side of the lock body 31 is fixedly mounted on the first shelf 300, so as to be movable together with the first shelf 300. Further, since the first shelf 300 is supported on the swing arm 2 through the lock body 31, the locking member 3 needs to have certain hardness and strength, and the material can be various, specifically, the lock body 31 can be a metal alloy material such as steel or aluminum alloy, or an inorganic non-metallic material such as ceramic, or a high polymer material such as plastic. As long as it can support the first shelf 300 after loading, the present application does not limit it. Further, the shape of the lock body 31 can be various, which can be rectangular, or pentagonal, etc., and the present application does not limit it.

[0196] The first guide rail 32 has an arc-shaped section connected to the first end thereof, and a connecting section connected to the arc-shaped section, the arc-shaped section is adapted to the sliding track of the first sliding part 23 on the swing arm 2, so as to guide the sliding of the first sliding part 23 of the swing arm 2. The connecting section can be arranged in various ways, for example, it can be arranged horizontally, or it can be arranged obliquely at a certain angle with the horizontal direction, and the present application does not limit it. Further, the number of the guide rail and the sliding part is not limited, which can be one or multiple, etc., and the present application does not limit it.

[0197] The material of the locking portion 41 can be plastic, metal or the like, and the present application does not limit the same. Further, referring to FIGS. 7 and 8, the locking portion 41 can limit the sliding of the first sliding portion 23 along the first guide rail 32 to lock the first sliding portion 23 at the tail end of the first guide rail 32 when the locking portion 41 is in the locking position. Further, the locking portion 41 can be resiliently returned to the locking position, so that the locking portion 41 can be in contact with the first sliding portion 23, and the user can determine whether the first sliding portion 23 is slid to the position.

[0198] In the technical solution of the present application, the locking structure 4 is arranged at the tail end of the first guide rail 32, so that when the first shelf 300 is lifted to the top lifting limit position, the first sliding portion 23 can drive the locking portion 41 to exit the locking position by continuously driving the first shelf 300, so that the first sliding portion 23 can slide into the tail end of the first guide rail 32, and the locking portion 41 is returned to the locking position under the action of the elastic force, so that the locking portion 41 can limit the first sliding portion 23 to lock the first shelf 300 at the top locking position. Thus, in use, the user first pulls the first shelf 300 forward to make the first shelf 300 move forward, so that the swing arm 2 of the lifting mechanism 100 can swing the first shelf 300 forward and upward to the top lifting limit position, and then continuously drives the first shelf 300 to move forward, so that the locking portion 41 can lock the first sliding portion 23 at the tail end of the first guide rail 32 to stop the swing arm 2, that is, the first shelf 300 is locked. In the entire lifting and locking process, the user only needs to drive the first shelf 300 to move, and the lifting and locking of the first shelf 300 can be completed. On the one hand, the first shelf 300 can avoid moving up and down due to load changes, which is convenient for the user to take and place articles. On the other hand, the locking portion 41 can be returned to the locking position under the action of the elastic force, so that the first sliding portion 23 can touch the locking portion 41 to drive the locking portion 41 to move, thereby facilitating the user to determine whether the first shelf 300 is moved to the position, which is simple to operate and good in user experience.

[0199] The household appliance 1000 can be a dishwasher, an oven, an oven, a refrigerator or the like. The household appliance 1000 comprises a housing 200, and a containing cavity 201 is formed in the housing 200. A first shelf 300 is connected to the containing cavity 201 by a lifting mechanism 100. The first shelf 300 is provided with an appliance to be placed, which can be a bowl, a dish, a plate, a chopstick, a fork or the like, or a baked food or an article to be refrigerated or the like.

[0200] Further, in some household appliances 1000, there is only one shelf, such as the first shelf 300. There are also multiple shelves. In the embodiment of the household appliance 1000, two shelves can be provided, such as the first shelf 300 and the second shelf 400. When the two shelves have an up-down positional relationship, they can be referred to as an upper shelf and a lower shelf. In the description of the embodiment of the present application, the first shelf 300 corresponds to the upper shelf, and the second shelf 400 corresponds to the lower shelf.

[0201] For the first shelf 300, the first shelf 300 needs to be moved out of the accommodating cavity 201 of the household appliance 1000, then lifted to a suitable position, and finally locked to a suitable position. Specifically, after the door body of the household appliance 1000 is opened, the user needs to put or take the object to be placed in or out of the first shelf 300. The user often pulls the first shelf 300 forward. During the movement of the first shelf 300, a combined movement process occurs, that is, the first shelf 300 is moved forward and upward at the same time. At this time, the lifting mechanism 100 will follow the movement and support the first shelf 300.

[0202] The first shelf 300 has several important positions during its movement. Commonly, there are a bottom storage position (as shown in FIG. 16), a bottom position to be lifted (as shown in FIG. 19), a top lifting limit position (as shown in FIG. 21), and a top locking position (as shown in FIG. 23).

[0203] When the first shelf 300 has the bottom storage position, the bottom position to be lifted, the top lifting limit position, and the top locking position, the swing arm 2 is at the lower swing limit position, and the corresponding first shelf 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 shelf 300 is at the top lifting limit position and the top locking position.

[0204] The specific implementation form of the first guide rail 32 and the first sliding part 23 is not limited, for example, the first guide rail can be configured as a guide rib, and the first sliding part can be configured as a sliding groove, or the first guide rail can be configured as a guide groove, and the first sliding part can be configured as a sliding column, which is not limited in the application. Specifically, in the embodiment, referring to FIGS. 3, 4, 9 and 10, the first guide rail 32 is provided as a first guide groove 321, one side wall of the first guide groove 321 is provided with a mounting groove 34, the lock body 31 is provided with an elastic member 35, and the elastic member 35 is used to provide an elastic force for the locking part 41. In this way, by providing the mounting groove 34, the locking part 41 is accommodated, so that the locking part 41 can move in the width direction of the first guide groove 321, and by providing the elastic member 35, the locking part 41 is elastically positioned at the locking position, so that the locking part 41 can be locked at the tail end of the first guide groove 321, and can be moved under the driving of the first sliding part 23, so that the locking part 41 can rebound to the locking position, thereby facilitating the user to determine whether the first sliding part 23 is slid to the position.

[0205] The elastic member 35 refers to a member with elasticity. Specifically, the elastic member 35 can be rubber, spring or the like, as long as it can provide the locking part 41 with an elastic force, which is not limited in the application.

[0206] Further, referring to FIG. 4, the width of the locking part 41 is tapered in the direction of the first guide groove 321, so that the locking part 41 is inclined along the two side walls of the first guide groove 321, thereby facilitating the first sliding part 23 to slide into or out of the first connecting section 322.

[0207] Further, in some embodiments, the mounting groove 34 comprises a first groove segment 341 and a second groove segment 342 distributed along the width direction of the first guide groove 321, the width of the first groove segment 341 is greater than that of the second groove segment 342, the locking portion 41 is elastically movably mounted in the first groove segment 341, and the locking structure 4 further comprises a guide portion 44 arranged on the locking portion 41, the guide portion 44 is slidably mounted in the second groove segment 342, thus, the second groove segment 342 cooperates with the guide portion 44 to guide, so that the locking portion 41 can move linearly along the width direction of the first guide groove 321, thereby helping to improve the stability of the movement of the locking portion 41. Further, the locking portion 41 and the guide portion 44 can be integrally formed or separately formed, which is not limited in the application. Specifically, in the embodiment, the locking portion 41 and the guide portion 44 are integrally formed, which can save subsequent assembly process and improve the connection strength between the locking portion 41 and the guide portion 44.

[0208] Further, referring to FIGS. 4 and 6, the lock body 31 is provided with a communication groove penetrating through both sides thereof, one end of the communication groove communicates with the mounting groove 34, and the locking structure 4 further comprises a mounting portion 42 and a connecting portion 43, the mounting portion 42 is located on the other side of the lock body 31 in the left-right direction, the locking portion 41 penetrates through the communication groove, the connecting portion 43 connects the mounting portion 42 and the locking portion 41, and the elastic member 35 is arranged on the other side of the lock body 31 and between the mounting portion 42 and the lock body 31, thus, by arranging the communication groove penetrating through both sides of the lock body 31 in the left-right direction, the mounting portion 42 can be arranged on the other side of the lock body 31, so that the elastic member 35 can be arranged on the side of the lock body 31 away from the swing arm 2, so as to separate the elastic member 35 from the swing arm 2, so as to avoid affecting the swing of the swing arm 2 due to the deformation of the elastic member 35, and reduce the risk of interference between the elastic member 35 and the swing arm 2.

[0209] Further, referring to FIGS. 5 and 6, the other side of the lock body 31 is provided with a receiving groove 36, one end of the elastic member 35 is arranged in the receiving groove 36, and the other end is connected to the connecting portion 43, thus, by arranging the receiving groove 36, the elastic member 35 is mounted, so that the elastic member 35 can reset the locking portion 41 to the locking position.

[0210] In an embodiment of the present application, referring to FIGS. 4-6, the width of the connecting portion 43 is greater than the width of the locking portion 41, so that the connecting portion 43 can abut against the lock body 31. In this way, by arranging the locking portion 41 with a smaller width and the connecting portion 43 with a greater width, an abutment surface is formed to abut against the periphery of the communication groove, so that the locking portion 41 can be positioned in the locking position.

[0211] In some embodiments, the width of the mounting portion 42 is less than the width of the connecting portion 43, so that the elastic member 35 can be sleeved on the mounting portion 42, and the elastic member 35 is only deformed in the width direction of the first guide groove 321, thereby reducing the probability of deformation of the elastic member 35 in the thickness direction of the lock body 31.

[0212] In order to make the elastic member 35 only deformed in the width direction of the first guide groove 321, the slot of the accommodating groove 36 needs to be directed towards the mounting groove 34, so that the elastic member 35 can only be placed into the accommodating groove 36 from top to bottom, which is inconvenient for installation. Therefore, in the present embodiment, referring to FIGS. 5 and 6, the side wall of the accommodating groove 36 away from the lock body 31 is arranged in an open manner, and the opening is provided with a barrier 361 at an end away from the communication opening. In this way, the side wall of the accommodating groove 36 away from the lock body 31 is arranged in an open manner, so that the elastic member 35 can be placed into the accommodating groove 36 from the side, which facilitates the disassembly and assembly of the elastic member 35. Meanwhile, by arranging the barrier 361, the probability of deformation of the elastic member 35 in the thickness direction of the lock body 31 away from the locking portion 41 is reduced.

[0213] In some embodiments, referring to FIGS. 9 and 10, the locking structure 4 comprises a housing 45 arranged in the mounting groove 34, wherein the elastic member 35 is arranged in the housing 45 and drives the locking portion 41. In this way, by arranging the housing 45, the elastic member 35 is arranged, so that the elastic member 35 can drive the locking portion 41 to reset to the locking position.

[0214] In an embodiment of the present application, referring to Figs. 9 and 10, the mounting slot 34 is provided with a limiting protrusion 343 at the side edge adjacent to the slot, and the lock body 31 is provided with a deformation slot 37 corresponding to the side edge of the mounting slot 34, so that the limiting protrusion 343 is arranged to limit the movement of the locking structure 4 in the thickness direction of the lock body 31 to prevent the locking portion 41 from coming out of the mounting slot 34, and the deformation slot 37 is arranged to reduce the strength around the mounting slot 34 so that the mounting slot 34 has a larger deformation amount to press the locking portion 41 into the mounting slot 34. It should be noted that the locking portion 41 has various forms, and in an embodiment, the locking structure 4 includes a spring pin, wherein the locking portion 41 includes the pin head of the spring pin.

[0215] In an embodiment of the present application, referring to Figs. 11 and 12, the first guide rail 32 is provided as a first guide slot 321, the mounting side 311 of the locking member 3 is provided with an avoiding slot 38 communicating with the first guide slot 321, and the locking portion 41 is arranged in the avoiding slot 38, one end of which is connected with the lock body 31 and the other end of which at least partially extends into the first guide slot 321, so that the avoiding slot 38 is arranged to deform the locking portion 41 in the width direction of the first guide slot 321 towards the avoiding slot 38 when the first sliding portion 23 contacts the locking portion 41, so that the first sliding portion 23 can slide out of the locking portion 41, and one end of the locking portion 41 is connected with the lock body 31 and the other end of which at least partially extends into the first guide slot 321, which on the one hand enables the locking portion 41 to form a side wall of the first guide slot 321 to guide the first sliding portion 23 to slide along the first guide slot 321, and on the other hand enables the locking portion 41 to form an elastic arm to elastically deform the locking portion 41 in the width direction of the first guide slot 321 to lock the first sliding portion 23 at the tail end of the first guide slot 321, which has a simple structure and low cost.

[0216] Further, the position of the avoiding slot 38 has various forms, and specifically, in the present embodiment, referring to Fig. 12, the avoiding slot 38 is arranged at the lower side of the first guide slot 321, and since the first guide slot 321 guides the first sliding portion 23 to slide through the lower side wall, which is a bearing side wall, the avoiding slot 38 is arranged at the lower side of the first guide slot 321 to easily drive the locking portion 41 to deform when the first sliding portion 23 slides towards the first connecting section 322, thereby facilitating the first sliding portion 23 to slide into the first connecting section 322. Of course, in other embodiments, the avoiding slot 38 can also be arranged at the upper side of the first guide slot 321, which is not limited in the present application.

[0217] In an embodiment of the present application, referring to FIGS. 13-15, the mounting side 311 of the lock body 31 is provided with a second guide slot 33 above the first guide slot 321 for sliding cooperation with the second sliding part 24 of the swing arm 2. The mounting side 311 of the lock body 31 is provided with an elastic guide part 39, one end of which extends to one side of the second guide slot 33. The elastic guide part 39 is elastically movably arranged along the left-right direction, and elastically avoids the other side of the lock body 31 to guide the second sliding part 24 to slide into the second guide slot 33.

[0218] The elastic guide part 39 generally refers to a part with elasticity, and the corresponding material selection has many types. Specifically, the elastic guide part 39 can be a metal alloy material such as steel or aluminum alloy, or a high polymer material such as plastic. The present embodiment only limits that the elastic guide part 39 is located at one side of the first guide slot 32, which can also be understood as being located at one side of the first guide slot 32 along its width direction, and does not limit which side of the width direction. Meanwhile, the first guide slot 32 itself also has an extension direction, and the elastic guide part 39 can be arranged at any side position of the first guide slot 32 along its extension direction, as long as the position is conducive to the installation of the second sliding part 24 into the second guide slot 33. The elastic guide part 39 can be elastically moved to the second mounting side 312 of the lock body 31 by the abutting action of the first sliding part 23. It can be understood that when the second sliding part 24 on the swing arm 2 is aligned to the side position (the position away from the second guide slot 33) of the second guide slot 33, with the movement of the locking part 3 relative to the swing arm 2, the second sliding part 24 gradually approaches the second guide slot 33. The second sliding part 24 can abut and push the elastic guide part 39, so that the elastic guide part 39 moves away from the second sliding part 24 along the left-right direction. The second sliding part 24, which loses the blocking, can slide into the second guide slot 33, while the elastic guide part 39, which loses the pushing action, can be reset and form a block to the second sliding part 24. That is, after the second sliding part 24 reaches the second guide slot 33, it cannot pass through the elastic guide part 39 along the path direction. In other words, the elastic guide part 39 can avoid and guide in a single direction, and stop and limit in the opposite direction. The elastic guide part 39 has many corresponding structure types, which are not limited in the present embodiment.

[0219] In the embodiment, the locking piece 3 can be pre-installed to the first shelf 300. Since the first guide groove 32 and the second guide groove 33 are arranged on the lock body 31, and the elastic guide part 39 is arranged on the side corresponding to the second guide groove 32, during the installation of the first shelf 300, the first sliding part 23 of the swing arm 2 can be first installed into the first guide groove 321 of the locking piece 3. At this time, by adjusting the position of the first sliding part 23 in the first guide groove 321, the second sliding part 24 on the swing arm 2 can be aligned to the side of the second guide groove 33, that is, the side corresponding to the position of the elastic guide part 39. Then, by pushing and pulling the first shelf 300, the second sliding part 24 abuts against the elastic guide part 39 and pushes the elastic guide part 39 to elastically move to the other side of the lock body 31 in the left-right direction. At this time, the elastic guide part 39 can avoid the second sliding part 24, the second sliding part 24 can be smoothly installed into the second guide groove 33, and the elastic guide part 39 that loses the pushing effect can be reset and block the second sliding part 24. Finally, the assembly of the locking piece 3 and the swing arm 2 is completed. Compared with the current scheme in which the first sliding part 24 and the second sliding part 24 are simultaneously installed into the first guide groove 32 and the second guide groove 33, in the technical solution, due to the arrangement of the elastic guide part 39, the second sliding part 24 can be installed into the second guide groove 33 from the side of the second guide groove 33. Therefore, by sequentially assembling the first sliding part 23 and the second sliding part 24, the installation difficulty of the locking piece 3 and the swing arm 2 as a whole can be reduced, and the assembly efficiency between the first shelf 300 and the lifting mechanism 100 in the household appliance 1000 can be improved.

[0220] Further, the elastic guide part 39 is arranged on the side of the second guide groove 33 adjacent to the first guide groove 321. It should be noted that if the elastic guide part 39 is arranged on the side of the second guide groove 33 away from the first guide groove 321, a part of the solid structure of the lock body 31 corresponding to the side of the second guide groove 33 away from the first guide groove 321 is needed to be reserved for connecting the elastic guide part 39. In the technical solution, since the first guide groove 32 and the second guide groove 33 are usually arranged with solid structures, arranging the elastic guide part 39 on the side of the second guide groove 33 adjacent to the first guide groove 321 is beneficial to reasonably utilize the solid structure of the lock body 31 and simplify the structural complexity of the lock body 31.

[0221] In some embodiments, referring to FIG. 14 and FIG. 15, the two ends of the elastic guide part 39 correspond to an inner end 391 and an outer end 392, the inner end 391 is arranged adjacent to the second guide groove 33, and the elastic guide part 39 has a guide section 392a arranged obliquely adjacent to the outer end 392.

[0222] The inner end 391 of the elastic guide part 39 is the end that stops and positions the second sliding part 24 after the second sliding part 24 slides into the second guide groove 33, and the outer end 392 of the elastic guide part 39 can be fixed relative to the position of the lock body 31, for example, the outer end 392 of the elastic guide part 39 is connected to the first shelf 300 or the lock body 31, or the entire elastic guide part 39 is movable relative to the lock body 31, and the present embodiment does not limit the connection mode of the outer end 392 of the elastic guide part 39 and the lock body 31; in general, the inclined direction of the guide section 392a can have multiple possibilities, as long as in the direction in which the second sliding part 24 approaches the second guide groove 33 through the elastic guide part 39, the guide section 392a can drive the inner end 391 of the elastic guide part 39 to avoid the second sliding part 24 through its contact with the second sliding part 24, and the present embodiment does not limit this.

[0223] In the present embodiment, since the guide section 392a is arranged obliquely, the second sliding part 24 can make the inner end 391 of the elastic guide part 39 elastically move in the left-right direction by abutting against the guide section 392a of the elastic guide part 39, thereby avoiding the movement of the second sliding part 24.

[0224] In some embodiments, referring to FIG. 14 and FIG. 15, the elastic guide part 39 includes an elastic cantilever 39a, the two ends of the elastic cantilever 39a correspond to the inner end 391 and the outer end 392, the inner end 391 is arranged adjacent to the second guide groove 33, and the outer end 392 is connected to the lock body 31. In the present technical solution, the elastic guide part 39 is arranged as an elastic cantilever 39a, and the outer end 392 of the elastic cantilever 39a is connected to the lock body 31, so that the elastic cantilever 39a can be integrally formed with the lock body 31, and the elastic cantilever 39a can drive its inner end 391 to move in the left-right direction through its elastic deformation characteristics.

[0225] Further, in some embodiments, the inner end 391 is higher than the outer end 392 in the left-right direction and in the direction away from the lock body 31. It can be understood that the inner end 391 being higher than the outer end 392 means that the elastic cantilever 39a has a corresponding inclined posture, so that the inner end 391 of the elastic cantilever 39a can be elastically swung in the left-right direction. The inner end 391 of the elastic cantilever 39a is used to stop the second sliding part 24, and also because the elastic cantilever 39a has a corresponding inclined posture, the inner end 391 of the elastic cantilever 39a can be reset to an inclined state after the second sliding part 24 passes, the second sliding part 24 is difficult to push the elastic cantilever 39a to deform from the inner end 391 of the elastic cantilever 39a, thereby forming a barrier to the second sliding part 24. The inner end 391 of the elastic cantilever 39a can not be specially provided in principle, but in some embodiments, the other end of the elastic cantilever 39a is formed with the stop plate 341a bent towards the lock body 31 (for example, as shown in FIG. 15).

[0226] Specifically, the elastic cantilever 39a includes the outer end 392 and the inner end 391 described above, the outer end 392 of the elastic cantilever 39a is connected to the lock body 31, the inner end 391 of the elastic cantilever 39a is arranged away from the lock body 31, and is formed with the stop plate 341a extending towards the lock body 31, the elastic cantilever 39a forms a barrier to the second sliding part 24 in the second guide groove 33 through the stop plate 341a.

[0227] The application also provides a lifting mechanism 100 for lifting a first shelf 300 of a household appliance 1000, so that the first shelf 300 can be switched between a bottom lifting position and a top lifting limit position, the lifting mechanism 100 comprising a fixed arm 1, at least one swing arm 2 and a locking member 3, the fixed arm 1 is arranged in a receiving cavity 201 of the household appliance 1000, the same swing arm 2 is formed with a first hinge mounting portion 21 and a second hinge mounting portion 22, the first hinge mounting portion 21 is mounted on the fixed arm 1, the second hinge mounting portion 22 is directly or indirectly mounted on the first shelf 300, and the swing arm 2 is formed with a first sliding part 23. It should be noted that the specific structure of the locking member 3 is referred to the above embodiments, since the lifting mechanism 100 adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0228] In addition, the application also provides a household appliance 1000, which comprises a shell 200, a lifting mechanism 100 and a first shelf 300. The shell 200 is formed with an accommodating cavity 201, the fixed arm 1 of the lifting mechanism 100 is arranged on the side wall of the accommodating cavity 201, and the first shelf 300 is hingedly connected to the swing arm 2 of the lifting mechanism 100. The lifting mechanism 100 enables the first shelf 300 to switch between a bottom waiting 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-mentioned embodiments. Since the household appliance 1000 adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0229] Corresponding to the household appliance 1000, the first shelf 300 can have two positions of a bottom waiting lifting position and a top lifting limit position. Considering the embodiment that the first shelf 300 can move forward and backward relative to the connecting piece, the first shelf 300 can have three positions of a bottom storage position, a bottom waiting lifting position and a top lifting limit position. Considering the embodiment that the first shelf 300 can move forward and be locked relative to the connecting piece, the first shelf 300 can have four positions of a bottom storage position, a bottom waiting lifting position, a top lifting limit position and a top locking position.

[0230] In some embodiments, referring to FIG. 19, the household appliance 1000 further comprises a slide rail structure 500, which comprises multiple slide rails connected to each other in an extension and sliding manner. The multiple slide rails at least comprise a first slide rail 501 and a last slide rail 502. The first slide rail 501 is directly or indirectly connected to the second hinged part of the swing arm, and the last slide rail 502 is connected to the first shelf 300. The swing arm 2 can swing the first shelf 300 from the bottom waiting lifting position to the top lifting limit position forward and upward. When the first shelf 300 is in the top lifting limit position, the multiple slide rails are arranged in an extension and sliding manner, so that the first shelf 300 can slide to the top locking position, the first shelf 300 can switch between the bottom storage position and the bottom waiting lifting position, and the position relationship of the first shelf 300 can be adjusted through the extension and sliding of the multiple slide rails. In this way, the first shelf 300 can be moved to the bottom storage position and stored in the accommodating cavity 201.

[0231] Further, the number of slide rails in the slide rail structure 500 is not limited, for example, the slide rail structure 500 can include two slide rails, or three slide rails, or more than three slide rails, for example, four slide rails, five slide rails, six slide rails, seven slide rails, etc. The number of slide rails is not limited in the present application. Specifically, in the present embodiment, the slide rail structure 500 further includes an intermediate slide rail 503, which is arranged between the first slide rail 501 and the last slide rail 502. In this way, the intermediate slide rail 503 is arranged to increase the sliding stroke of the first shelf 300, so that the first shelf 300 can be completely slid out of the accommodating cavity 201, so as to avoid interference between the first shelf 300 and other structures in the shell 200 when the lifting mechanism 100 lifts the first shelf 300. For example, the second shelf 400. Further, the number of intermediate slide rails 503 can be one or more, etc. The number of intermediate slide rails 503 is not limited in the present application. However, the more the number of intermediate slide rails 503, the more complex the slide rail structure 500, and the higher the cost. Therefore, in the present embodiment, the number of intermediate slide rails 503 is one, which can meet the requirements of the movement stroke of the first shelf 300 and reduce the cost of the slide rail structure 500.

[0232] In an embodiment of the present application, the number of swing arms 2 is not limited, and the swing arm 2 can be one or two. In the embodiment in which the swing arm 2 is two, the lifting mechanism 100 includes a four-bar linkage structure, and the four-bar linkage structure is a parallelogram four-bar linkage mechanism. In an embodiment of the present application, referring to FIGS. 14, 15, 17 and 19, the swing arm 2 is two, and the lifting mechanism 100 further includes a connecting piece connected to the first slide rail 501. The second hinge mounting portion 22 is hinged to the connecting piece. The connecting piece is provided with a hinge fitting portion, so as to connect the swing arm 2 and the first shelf 300. The structure of the first shelf 300 is simplified, and the first shelf 300 is convenient to arrange.

[0233] During the movement of the lifting mechanism 100, the state of the connecting piece remains unchanged. In this way, the state of the first shelf 300 remains unchanged during the movement, so that the storage of the to-be-stored articles has good stability. The connecting piece is connected to the first slide rail 501, and the connection can be achieved by adhesion or welding. For example, the connecting piece can be adhered to the first slide rail 501 by using an adhesive. Of course, the connecting piece and the first slide rail 501 can be made of metal materials, such as iron or steel, and the connecting piece can be welded to the first slide rail 501.

[0234] In some embodiments, the connecting piece and the first segment sliding rail 501 are integrally formed, i.e., the connecting piece and the first segment sliding rail 501 are one component, thus reducing the number of parts, saving assembly time and cost.

[0235] In some household appliances 1000, there is only one shelf, two shelves, or more shelves. In the technical solution of the present application, a second shelf 400 is further arranged in the accommodating cavity 201. Correspondingly, at the top lifting limit position, the lower end of the first shelf 300 protrudes upward from the lower end of the second shelf 400, i.e., 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, the frequency of bending over by the user is reduced, and the user experience is improved.

[0236] In the embodiment in which there are two shelves in the household appliance 1000, the first shelf 300 is a lower shelf, and the second shelf 400 is an upper shelf. When the first shelf 300 is at the top storage position and the second shelf 400 is in the accommodating cavity 201, the first shelf 300 is arranged below the second shelf 400 and opposite to the second shelf 400.

[0237] In view of the above-mentioned embodiments, the user needs to alternate the use of the first shelf 300 and the second shelf 400, i.e., when the first shelf 300 is lifted, the second shelf 400 is kept in the accommodating cavity 201 as much as possible; when the second shelf 400 is used, the first shelf 300 is kept in the accommodating cavity 201 as much as possible, or the second shelf 400 is not lifted as much as possible.

[0238] Of course, for the upper end of the first shelf 300 and the upper end of the second shelf 400, in some embodiments, at the top lifting limit position and the top lifting locking position of the first shelf 300, the upper end of the first shelf 300 protrudes upward from the upper end of the second shelf 400, i.e., under the premise that the first shelf 300 and the second shelf 400 have the same depth, the first shelf 300 can be arranged at a higher position.

[0239] Corresponding to the product of the household appliance 1000 being a dishwasher, the first shelf 300 corresponds to the lower basket of the dishwasher, and the second shelf 400 corresponds to the upper basket of the dishwasher. When the lower basket of the dishwasher is used, the lifting mechanism 100 lifts the lower basket of the dishwasher to a position higher than the upper basket. In this state, the user has the same operating height as when using the upper basket of the dishwasher, or a higher height, and the user's operating experience is better.

[0240] The following describes the user's use of the household appliance 1000 with reference to the structure of the household appliance 1000. The first shelf 300 is used as a reference:

[0241] 1. The first shelf 300 is in a bottom storage position, as shown in FIGS. 13-15:

[0242] This state is the state when the user is not using, or just starting to use, or has finished using. In these states, the first shelf 300 is in the containing cavity 201 of the household appliance 1000. As can be seen from FIG. 13, the first shelf 300 is stored in the containing cavity 201, and the swing arm 2 is in the lower swing limit position, and the sliding part is in a separated state from the guide rail.

[0243] 2. The first shelf 300 is in a bottom lifting position, as shown in FIGS. 16-17:

[0244] This state is the state when the user pulls the first shelf 300 out of the containing cavity 201, or the state when the user lowers the first shelf 300 after using it. In these states, the first shelf 300 is at the opening of the containing cavity 201, and the swing arm 2 is still in the lower swing limit position. At this time, the sliding part is in contact with the front end of the guide rail. When the guide rail is provided with a plurality of guide rails, such as the first guide rail 32 and the second guide rail 33, the sliding part is correspondingly provided with a plurality of sliding parts, including 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, and then the first shelf 300 continues to move forward and upward.

[0245] 3. The first shelf 300 is in a top lifting limit position, as shown in FIGS. 18-19:

[0246] This state is a state in which the user lifts the first shelf 300 or a state in which the user exits the locking after using the first shelf 300. In these states, the first shelf 300 is at the maximum height of lifting. As can be seen from FIG. 18, at this time, the sliding part of the swing arm 2 slides to the rear end of the first arc segment 321, and the swing arm 2 is at the upper swing limit position.

[0247] 4. The first shelf 300 is at the top locking position, as shown in FIGS. 20-21.

[0248] This state is a state in which the user lifts the first shelf 300 or a state in which the user exits the locking after using the first shelf 300. In these states, the first shelf 300 is at the maximum height of lifting. As can be seen from FIG. 18, at this time, the sliding part of the swing arm 2 slides to the rear end of the first arc segment 321, and the swing arm 2 is at the upper swing limit position.

[0249] The following will be introduced in combination with the above-mentioned embodiments in a complete use process of the user:

[0250] When the user needs to use the household appliance 1000, first open the door body of the household appliance 1000, and the user pulls the first shelf 300 out of the containing cavity 201 to the bottom lifting position from the bottom storage position. Under the swing 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 locking state, the user can take and place the shelf 300 under the condition of reducing the frequency of bending.

[0251] When the user finishes the taking and placing of the to-be-shelved items, the user pushes the first shelf 300 backward, so that the first shelf 300 is unlocked and moves from the top unlocking position to the top lifting limit position; the user lowers the first shelf 300, so that the first shelf 300 moves from the top lifting limit position to the bottom to-be-lifted position; the user continues to push the first shelf 300 backward, so that the first shelf 300 moves from the bottom to-be-lifted position to the bottom storage position, and when the first shelf 300 is at the bottom storage position, the user can close the door body, completing the use of the household appliance 1000.

[0252] The basket is an important part of the dishwasher, which is used to carry the tableware to be washed, and the lower basket is a basket located at the lower end of the dishwasher. During use, such as taking and placing tableware, frequent bending is required. In order to reduce the frequency of bending during the use of the lower basket, the prior art uses a lifting mechanism to lift the lower basket for use, which can reduce the frequency of bending. However, the existing lifting mechanism makes the lifting height of the lower basket relatively low, and the user still needs to bend frequently during use, resulting in poor user experience.

[0253] Therefore, the application provides a lifting mechanism, which optimizes the existing lifting mechanism, reduces the frequent bending of the user during operation, and improves the user experience. FIGS. 25-40 are structural schematic diagrams of the lifting mechanism provided by the application.

[0254] Please refer to FIGS. 25-27. The application provides a dishwasher 2000, which includes a cabinet 600, a lifting mechanism 100 arranged in the cabinet 600, and a lower basket 700. After the door body of the dishwasher 2000 is opened, the user needs to place or take tableware from the lower basket 700. The user usually pulls the lower basket 700 forward (by sliding the slide rail connected to the lower basket 700), and then pulls the lower basket 700 forward and upward after pulling it to a certain position. At this time, the lifting mechanism 100 moves and supports the lower basket 700.

[0255] FIGS. 25-27 show different positions of the lower basket 700. As shown in FIG. 25, the lower basket 700 is at the lowest position. As shown in FIG. 27, the lower basket 700 is at the highest position. As shown in FIG. 26, the lower basket 700 is at an intermediate position between the lowest position and the highest position. Some lifting mechanisms 100 can only lift to the position shown in FIG. 26. The optimized lifting mechanism 100 in the application can lift the lower basket 700 to the position shown in FIG. 27. As shown in FIG. 27, the lifting height is significantly higher than that in FIG. 26.

[0256] In view of the lifting mechanism 100 of the present application capable of lifting the lower basket 700 to the preferred highest position, in some embodiments, the lifting mechanism 100 of the present application comprises a fixed arm 1, two swing arms each having a connecting end and a following end, the connecting end of each swing arm being hingedly mounted to the fixed arm 1, and a horizontal arm 6 hingedly mounted with the following ends of the two swing arms, the horizontal arm 6 being upwardly and forwardly movable, the two swing arms being swingable following the movement of the horizontal arm 6, the fixed arm 1, the two swing arms and the horizontal arm 6 forming a four-bar linkage, the horizontal arm 6 being capable of being kept in a horizontal state during the swinging of the swing arms.

[0257] In some embodiments, the swing arms have a swing stroke, the swing stroke defining a swing angle of the swing arms, the swing angle being set as an obtuse angle.

[0258] In the technical solution of the present application, the fixed arm 1 is fixedly mounted, the horizontal arm 6 is upwardly and forwardly movable, the two swing arms are swingable following the movement of the horizontal arm 6, the swing arms have a swing stroke, the swing stroke defining a swing angle of the swing arms, the swing angle being set as an obtuse angle, thus increasing the swing angle of the swing arms, enabling the horizontal arm 6 to be moved to a higher position, raising the height of the lower basket 700, reducing the frequency of bending of the user during use, and improving the user experience.

[0259] In the present application, the user is used as a directional reference, forward means the direction towards the user, backward means the direction away from the end of the fixed arm 1, corresponding to the rear side of the dishwasher 2000 inside the dishwasher 2000, and the up-down direction means the direction with gravity as a reference.

[0260] The power for the forward and upward movement of the horizontal arm 6 is mainly the user holding and pulling the horizontal arm 6 forward and upward to realize the movement thereof. The fixed arm 1, the two swing arms and the horizontal arm 6 form a four-bar linkage, the horizontal arm 6 being capable of being kept in a horizontal state at any position during the swinging of the two swing arms, thus the dishes in the lower basket 700 being kept in a stable state during the movement of the entire lifting mechanism 100.

[0261] In addition, the swing angle is the included angle between the lower limit position and the upper limit position of the horizontal arm 6 corresponding to the same swing arm, the obtuse angle being an angle range greater than 90° and less than 180°, in the present embodiment, the swing angles of the two swing arms are completely the same.

[0262] Please refer to FIG. 28 and FIG. 29, FIG. 28 shows the first position of the two swing arms corresponding to the lower limit position of the horizontal arm 6, and FIG. 29 shows the second position of the two swing arms corresponding to the upper limit position of the horizontal arm 6, and the swing angle is the included angle between the first position and the second position of any one of the swing arms.

[0263] The fixed arm 1, the two swing arms and the horizontal arm 6 can all be rod-shaped structures, and in some embodiments, the fixed arm 1, the two swing arms and the horizontal arm 6 can all be provided in a sheet-like strip structure, that is, the thickness is small and the area of the extension plane is large, and in order to have better strength, some alloy materials can be selected.

[0264] In the technical solution of the present application, the specific angle value of the rotation angle is not limited, and it can be an obtuse angle, and in some embodiments, the swing angle is α, and α is greater than 90° and less than or equal to 160°, the greater the swing angle, the smaller the distance between the two swing arms corresponding to the upper limit position of the horizontal arm 6, and considering some interference factors and the structural strength of each swing arm, the maximum angle of the swing angle is set to 160°, which is a more reasonable value.

[0265] The swing angle can be an integer value of 160°, or an arbitrary integer value between 90° and 160°, such as 100°, 110°, 120°, 130°, 140°, 150°, etc., and of course, it can also be an angle value between any two of the above integer values, such as between 90° and 100°, which can be 91°, 92°, 93°, 94°, 95°, 96°, 97°, 98°, 99°, etc., and of course, it can also be some decimal degree values, and the above values are all within the protection scope of the present application.

[0266] The two swing arms swing following the movement of the horizontal arm 6, and the two swing arms can at least partially swing in the same plane, or the two swing arms can swing in different planes. It should be noted that in the following described embodiments, in the embodiments where the two swing arms swing in different planes, the embodiments where the two swing arms at least partially swing in the same plane are described.

[0267] In addition, for the upper limit position of the horizontal arm 6, in the embodiment where the two swing arms at least partially swing in the same plane, a first upper limit position is described in detail, and in the embodiment where the two swing arms swing in different planes, a second upper limit position is described in detail.

[0268] In some embodiments, the two swing arms are arranged to have the same thickness, and the end surfaces of the two swing arms in the thickness direction are in the same plane, i.e., the projections are completely overlapped, so as to reduce the layout space of the entire lifting mechanism 100. Of course, in other embodiments, the two swing arms can also be partially overlapped, for example, only 1 / 3 or 2 / 3 of the thickness of the swing arm is overlapped; or only 1 / 4, 2 / 4, 3 / 4 of the thickness of the swing arm is overlapped; or only 1 / 5, 2 / 5, 3 / 5, 4 / 5 of the thickness of the swing arm is overlapped, and the like. Of course, in some embodiments, the two swing arms can also be arranged to have different thicknesses, for example, one of the swing arms has a thickness of 5 mm, and the other swing arm has a thickness of 6 mm, 7 mm, or 8 mm, and the like, which can be designed according to different forces.

[0269] In the embodiments in which the two swing arms interfere with each other during swinging, in order to satisfy the obtuse angle of the swing angle, the positions of the rotation points between the two swing arms and the fixed arm 1 need to be limited. Specifically, the two swing arms include a first swing arm 2a and a second swing arm 2b, the first swing arm 2a is connected to the fixed arm 1 through a first hinge shaft 20, and the second swing arm 2b is connected to the fixed arm 1 through a second hinge shaft 54. The second hinge shaft 54 has a longitudinal distance in the up-down direction and a transverse distance in the front-back direction relative to the first hinge shaft 20, and the longitudinal distance is greater than the transverse distance. In this way, when the two swing arms swing from the vertical state to the horizontal state, the two swing arms do not interfere with each other, and the two swing arms can continue to swing upward, thereby realizing the obtuse angle of the swing angle.

[0270] Corresponding to the lower limit position of the horizontal arm 6, the two swing arms are in a vertical state, please refer to FIG. 30, the transverse distance between the first hinge shaft 20 and the second hinge shaft 54 directly determines the transverse spacing of the two swing arms, and determines whether the two swing arms interfere with each other in this state. The longitudinal distance between the first hinge shaft 20 and the second hinge shaft 54 directly determines the longitudinal spacing of the two swing arms, and determines whether the two swing arms interfere with each other in this state. During the swinging of the swing arm from the vertical state to the horizontal state, the transverse width of the swing arm is directly converted into the height dimension in the longitudinal direction, therefore, the longitudinal distance needs to be greater than the transverse distance.

[0271] In addition, the difference between the longitudinal distance and the transverse distance directly determines the swing angle of the swing arm. The greater the difference, the greater the swing angle. The smaller the difference, the smaller the swing angle.

[0272] The connection between the first hinge shaft 20, the first swing arm 2a and the fixed arm 1 is not limited. The first hinge shaft 20 can be fixedly installed with the first swing arm 2a, or integrally formed. A first mounting hole is provided on the fixed arm 1, and the first hinge shaft 20 is hingedly installed in the first mounting hole. Alternatively, the first hinge shaft 20 can be fixedly installed with the fixed arm 1, or integrally formed. A second mounting hole is provided on the first swing arm 2a, and the first hinge shaft 20 is hingedly installed in the second mounting hole.

[0273] Since the first hinge shaft 20 will rotate relative to the first swing arm 2a or the fixed arm 1 for a long time, the first hinge shaft 20 and the first swing arm 2a or the fixed arm 1 can be made of different materials. For example, the first hinge shaft 20 is made of iron, the first swing arm 2a is made of iron, and the fixed arm 1 is made of copper. Alternatively, the first hinge shaft 20 is made of iron, the fixed arm 1 is made of iron, and the first swing arm 2a is made of copper.

[0274] In some embodiments, a bearing can be provided between the first hinge shaft 20 and the first mounting hole or the second mounting hole to reduce wear and tear of the first hinge shaft 20 through rotation of the bearing.

[0275] The connection between the second hinge shaft 54, the second swing arm 2b and the fixed arm 1 is not limited. The second hinge shaft 54 can be fixedly installed with the second swing arm 2b, or integrally formed. A third mounting hole is provided on the fixed arm 1, and the second hinge shaft 54 is hingedly installed in the third mounting hole. Alternatively, the second hinge shaft 54 can be fixedly installed with the fixed arm 1, or integrally formed. A fourth mounting hole is provided on the second swing arm 2b, and the second hinge shaft 54 is hingedly installed in the fourth mounting hole.

[0276] Since the second hinge shaft 54 will rotate relative to the second swing arm 2b or the fixed arm 1 for a long time, the second hinge shaft 54 and the second swing arm 2b or the fixed arm 1 can be made of different materials. For example, the second hinge shaft 54 is made of iron, the second swing arm 2b is made of iron, and the fixed arm 1 is made of copper. Alternatively, the second hinge shaft 54 is made of iron, the fixed arm 1 is made of iron, and the second swing arm 2b is made of copper.

[0277] In some embodiments, a bearing can also be arranged between the second hinge shaft 54 and the third mounting hole or the fourth mounting hole, and the wear and tear of the second hinge shaft 54 is reduced through rotation of the bearing.

[0278] In the technical solution of the present application, the absolute position between the first hinge shaft 20 and the second hinge shaft 54 is not limited, i.e., the first hinge shaft 20 can be above the second hinge shaft 54, or the first hinge shaft 20 can be below the second hinge shaft 54, which are all embodiments of the present application. In some embodiments, the second hinge shaft 54 is arranged at the front side and the upper side of the first hinge shaft 20, so that the two swing arms are arranged conveniently.

[0279] The first hinge shaft 20 is defined as the coordinate origin, the forward direction is defined as the +X direction, and the upward direction is defined as the +Y direction, i.e., the second hinge shaft 54 is arranged in the first quadrant in the coordinate system.

[0280] In some embodiments, the width of the narrowest part of the first swing arm 2a is L1, the width of the narrowest part of the second swing arm 2b is L2, the longitudinal distance is defined as y, and the transverse distance is defined as x, where 0

[0281] In some embodiments, the first hinge shaft 20 is arranged at the middle position of the first swing arm 2a, and the second hinge shaft 54 is arranged at the middle position of the second swing arm 2b, i.e., the transverse distance x needs to be near 0.5(L1+L2), so that the first swing arm 2a and the second swing arm 2b are best in stress and structural strength.

[0282] In addition, for the longitudinal distance y, 0.5(L1+L2)≤y≤2(L1+L2); the parameter 0.5(L1+L2) represents the minimum distance value required for the two swing arms to continue to swing upward when the two swing arms are in the horizontal state in the case that the hinge shafts of the swing arms approach the centrally arranged case; for the limit value of y, the larger the value is set, the larger the width of the fixed arm 1 is, and the larger the width of the horizontal arm 6 is, that is, the horizontal arm 6 needs to be arranged in a large size; the parameter 2(L1+L2) represents a reasonable distance value of the size of the swing arm in the case that the function is met. Arranging the longitudinal distance between the two parameters above facilitates the arrangement of the two swing arms to achieve the increase of the swing angle of the swing arms.

[0283] In the embodiments of the present application, the width of the first swing arm 2a can be arranged as an equal-width section or a variable-width section. In the embodiment in which the first swing arm 2a is arranged as an equal-width section, the width of the narrowest part of the first swing arm 2a is the width value of the entire first swing arm 2a. In the embodiment in which the first swing arm 2a is arranged as a variable-width section, the width of the narrowest part of the first swing arm 2a is the minimum width value of the first swing arm 2a.

[0284] The width of the second swing arm 2b can be arranged as an equal-width section or a variable-width section. In the embodiment in which the second swing arm 2b is arranged as an equal-width section, the width of the narrowest part of the second swing arm 2b is the width value of the entire second swing arm 2b. In the embodiment in which the second swing arm 2b is arranged as a variable-width section, the width of the narrowest part of the second swing arm 2b is the minimum width value of the second swing arm 2b.

[0285] When the horizontal arm 6 is at the lower limit position, the two swing arms need to be swing-stopped to prevent the horizontal arm 6 from continuing to move backward to interfere with the structure in the dishwasher 2000. This can be achieved by arranging some locking structures, for example, by arranging a locking buckle and a locking buckle groove on the fixed arm 1 and the swing arm, when the swing arm corresponds to the lower limit position of the horizontal arm 6, the locking buckle is buckled into the locking buckle groove to achieve locking.

[0286] Of course, in some other embodiments, a connecting hole can also be arranged on the fixed arm 1 and the swing arm, respectively, and a pivot pin is simultaneously inserted into the two connecting holes to achieve locking.

[0287] In some other embodiments, please continue to refer to FIG. 30, at the lower limit position, the two swing arms abut to swing backward, and the swing backward of the swing arm can be achieved without additional locking structure by the abutting mode of the two swing arms, which is simple in structure and convenient to arrange.

[0288] The abutting mode of the two swing arms can be that the entire side edge of the swing arm abuts, or that part of the side edge of the swing arm abuts. The greater the length of the abutment, the higher the processing requirement of the side edge of the two swing arms, and in addition, the installation precision of the hinge of the two swing arms is also required to be higher.

[0289] In the embodiment in which part of the side edge abuts, at least one of the two swing arms is provided as a convex swing arm, the convex swing arm comprises a swing arm body and an abutting convex portion 51 provided at the side end of the swing arm body facing the other swing arm, the abutting convex portion 51 is used to abut the other swing arm, and the abutting mode realized by the abutting convex portion 51 reduces the abutting area, facilitates the processing of the two swing arms, and also reduces the installation requirement between the first hinge shaft 20 and the second hinge shaft 54.

[0290] In the embodiment in which the abutting convex portion 51 realizes the abutment between the two swing arms, corresponding to the lower limit position of the horizontal arm 6, the two swing arms can be spaced apart at positions other than the abutting convex portion 51, and the spacing distance can be adjusted as required, such as 1 mm, 2 mm, and the like.

[0291] In the embodiment in which the abutting convex portion 51 of the convex swing arm abuts the other swing arm, the other swing arm can be a straight edge, can also be provided with an abutting convex portion 51, and of course, can also be provided with a matching recess portion 52.

[0292] In the embodiment in which the other swing arm is also provided with an abutting convex portion 51, both of the two swing arms are provided as the convex swing arm, and the abutting convex portions 51 of the two convex swing arms can be oppositely arranged, that is, the two abutting convex portions 51 abut each other, so that the convex height of each abutting convex portion 51 can be set to be smaller. Of course, in some other embodiments, the abutting convex portions 51 of the two convex swing arms can be staggered, that is, arranged in a spaced apart manner along the length direction of the first swing arm 2a.

[0293] In the embodiment in which the other swing arm is provided with a matching recess portion 52, the matching recess portion 52 is used to cooperate with the abutting convex portion 51, and the two are cooperatively installed, thereby improving the stability during the swing stopping of the two swing arms.

[0294] Of course, a plurality of groups of structures in which the abutting convex portion 51 and the matching recess portion 52 cooperate can be arranged between the two swing arms, such as 2 groups, 3 groups, or 4 groups, and the like, so as to further improve the stability during the swing stopping of the two swing arms.

[0295] In the embodiment where a plurality of sets of the abutting protrusions 51 and the matching recesses 52 are matched, different abutting protrusions 51 can be arranged on different swing arms, and correspondingly, different matching recesses 52 can be arranged on different other swing arms.

[0296] In the embodiment of the present application, the specific shape of the abutting protrusions 51 is not limited, for example, it can be rectangular, square or circular, and so on, and correspondingly, the matching recesses 52 can also be rectangular, square or circular, and so on. The depth of the matching recesses 52 is also not limited, which can be the same as the protruding amount of the abutting protrusions 51, or can be less than the protruding amount of the abutting protrusions 51, that is, the end of the abutting protrusion 51 away from the end of the swing arm body is spaced apart from the bottom wall of the matching recess 52.

[0297] In some embodiments, the cross-sectional width of the abutting protrusion 51 gradually decreases in the direction of the abutting protrusion 51 towards the matching recess 52, and correspondingly, the cross-sectional width of the recessed cavity of the matching recess 52 gradually decreases. In this way, when the abutting protrusion 51 is inserted into the opening of the matching recess 52, a small cross-section solid enters a large opening, so that the abutting protrusion 51 is more easily inserted into the matching recess 52, to achieve quick and stable locking of the two swing arms.

[0298] The abutting protrusion 51 has two side edges in the length direction of the swing arm body, each of which can be linearly extended, or can be curvedly extended, or can be partially linearly extended and partially curvedly extended.

[0299] In some embodiments, at least one of the side edges is arranged obliquely, and of course, the direction of the oblique arrangement needs to be such that the size of the abutting protrusion 51 gradually decreases in the direction towards the other swing arm. Correspondingly, the matching recess 52 has an inner side wall arranged obliquely, and by means of the oblique arrangement, a guide structure is formed to easily guide the matching and installation of the abutting protrusion 51 and the matching recess 52. In the embodiment where both of the side edges are arranged obliquely, the matching and installation of the abutting protrusion 51 and the matching recess 52 is more easily guided.

[0300] In the whole swing stroke of the swing arms, the distance between the two swing arms reaches a minimum value corresponding to the upper limit position of the horizontal arm 6. In order to make the horizontal arm 6 obtain a larger lifting height, the two swing arms can abut corresponding to the upper limit position of the horizontal arm 6. In order to reduce the influence of the abutting protrusion 51 on the abutment of the two swing arms corresponding to the upper limit position, some embodiments include a first upper limit position, corresponding to which the abutting protrusion 51 is located on the side of the end of the other swing arm connected to the fixed arm 1 to avoid the other swing arm. That is, at this time, the abutting protrusion 51 does not abut with any position of the other swing arm, and at this time, the two swing arms can abut edge-to-edge, so that both of the two swing arms can swing upward to a larger height, so that the horizontal arm 6 obtains a larger lifting height.

[0301] In view of the above description, in some embodiments, referring to FIGS. 31 and 32, the swing arm is hingedly installed on the fixed arm 1 through a first connecting shaft, and the abutting protrusion 51 is arranged adjacent to the first connecting shaft. In this way, during the swing of the swing arm, the abutting protrusion 51 can be well moved to the side of the end of the other swing arm to avoid the other swing arm.

[0302] The abutting protrusion 51 can be connected to the swing arm body through a detachable connection structure, such as a screw, a buckle connection, etc.; or can be arranged through adhesion, such as through structural glue, etc.; or can be arranged through welding.

[0303] In some embodiments, the abutting protrusion 51 is integrally formed with the swing arm body, which can be formed by a plate material wire cutting, or plasma cutting, or cutting processing.

[0304] When the horizontal arm 6 is at the upper limit position, the two swing arms cannot continue to swing upward, and in some embodiments, the two swing arms abut to stop swinging upward, reducing the influence of the interference of the two swing arms on the lifting height of the lower basket 700, increasing the swing angle of the two swing arms, further improving the lifting height of the horizontal arm 6, and further raising the height of the lower basket 700.

[0305] In some embodiments, referring to FIG. 31, each swing arm has a straight edge segment 53 arranged adjacent to the horizontal arm 6. Corresponding to the first upper limit position, the two swing arms abut edge-to-edge at least at the straight edge segment 53, that is, the two swing arms are completely abutted, so that both of the two swing arms can swing upward to a larger height, so that the horizontal arm 6 obtains a larger lifting height.

[0306] The length of the co-edge directly affects the angle of the swing arm upward swing, and can be that the straight edge segments 53 of the two swing arms are fully co-edges, or that the straight edge segments 53 of the two swing arms are partially co-edges. In the embodiment that the straight edge segments 53 of the two swing arms are fully co-edges, the two swing arms can swing upward to a larger height, so that the horizontal arm 6 obtains a larger lifting height.

[0307] In a second vertical plane composed of the front-rear direction and the up-down direction, each of the swing arms has a first hinged center point hingedly mounted with the fixed arm 1, and a second hinged center point hingedly mounted with the horizontal arm 6, and a straight line defined by the first hinged center point and the second hinged center point is a center line. The swing of the swing arm is performed along the center line, and the included angle between the straight edge segment 53 and the center line directly determines the fitting degree of the two swing arms at the corresponding first upper limit position. In some embodiments, the opposite sides of the straight edge segments 53 of the two swing arms are both arranged in parallel with the center line, so that the straight edge segments 53 of the two swing arms are fully fitted, so that the two swing arms can swing upward to a larger height, so that the horizontal arm 6 obtains a larger lifting height.

[0308] On the basis of meeting the above-mentioned swing function of the first swing arm 2a and the second swing arm 2b, in order to increase the structural strength of the first swing arm 2a and the second swing arm 2b, a first reinforcing protrusion is protruded on the side of the first swing arm 2a away from the second swing arm 2b adjacent to the fixed arm 1, and the first reinforcing protrusion is integrally formed with the first swing arm 2a. A second reinforcing protrusion is protruded on the side of the first swing arm 2a away from the second swing arm 2b adjacent to the horizontal arm 6, and the second reinforcing protrusion is integrally formed with the first swing arm 2a. In this way, the structural strength of the first swing arm 2a is increased.

[0309] In some embodiments, referring to FIG. 33, the projections of the two swing arms in a first vertical plane composed of the left-right direction and the up-down direction are staggered, the first swing arm 2a is connected with the horizontal arm 6 through a third hinged shaft 25, the second swing arm 2b is connected with the horizontal arm 6 through a fourth hinged shaft 26, and the two limit positions include a second upper limit position. Corresponding to the second upper limit position, the projections of the first hinged shaft 20, the second hinged shaft 54, the third hinged shaft 25 and the fourth hinged shaft 26 in a second vertical plane composed of the front-rear direction and the up-down direction are arranged in a straight line, and the four hinged points of the two swing arms are arranged in a straight line, so that the two swing arms can swing upward to a maximum height, so that the horizontal arm 6 obtains a larger lifting height.

[0310] The position relationship between the first hinged shaft 20 and the second hinged shaft 54 directly determines the maximum swing angle of the swing arm. For example, the second hinged shaft 54 has a longitudinal distance y in the up-down direction and a transverse distance x in the front-back direction relative to the first hinged shaft 20, and the swing angle of the swing arm at the lower limit position and the second upper limit position is α, and there is a relationship tan(α-90°)=y / x; that is, the transverse distance and the longitudinal distance directly determine the size of the swing angle.

[0311] When the horizontal arm 6 is at the first upper limit position or the second upper limit position, and the dish load is too heavy, the lower basket 700 may fall due to gravity. In some embodiments, referring to FIGS. 34-40, the lifting mechanism 100 further includes a locking structure for locking the swing arm to reduce the risk of the lower basket 700 falling by itself.

[0312] The locking structure includes a fixed part 7 that can be movably mounted relative to the horizontal arm 6 in the front-back direction, and at least one of the two swing arms is provided as a locking swing arm.

[0313] During forward movement of the fixed part 7 relative to the horizontal arm 6, the locking swing arm can be downwardly stopped, the fixed part 7 pulls the lock forward, and the fixed part 7 is fixedly connected with the lower basket 700, that is, the lower basket 700 pulls the lock forward, which conforms to the user's usage habit and further improves the user experience.

[0314] The user's operation habit is to pull the lower basket 700 forward and upward, so the forward operation mode can better conform to the user's usage habit.

[0315] During backward movement of the fixed part 7 relative to the horizontal arm 6, the fixed part 7 pushes the lock backward, and the fixed part 7 is fixedly connected with the lower basket 700, that is, the lower basket 700 pushes backward, which also conforms to the user's usage habit and further improves the user experience.

[0316] There are many ways to achieve the locking of the fixed part 7 and the swing arm, such as the way of inserting a pin shaft into two connecting holes to achieve locking at a special position. In some embodiments, one of the fixed part 7 and the locking swing arm is provided with a first sliding shaft 27, and the other is provided with a first matching sliding groove 71.

[0317] Referring to FIGS. 35, 37 and 39, the first matching sliding groove 71 at least includes a horizontal groove segment 711 extending in the front-back direction, the fixed part 7 moves forward relative to the horizontal arm 6, the first sliding shaft 27 can slide backward into the horizontal groove segment 711, so that the locking swing arm is downwardly stopped.

[0318] By means of the sliding fit between the first sliding shaft 27 and the first matching sliding groove 71, the relative fixation between the fixed part 7 and the swing arm after the sliding of the first sliding shaft 27 into the horizontal groove section 711 can be considered in the whole swing stroke of the swing arm, that is, the swing arm is locked, and the risk of the lower basket 700 falling by itself is reduced.

[0319] The first matching sliding groove 71 can be the horizontal groove section 711 only, and when the swing arm reaches the maximum swing angle position, the first sliding shaft 27 is at the front end of the horizontal groove section 711. When the fixed part 7 is pulled forward, the first sliding shaft 27 slides backward into the horizontal groove section 711. When the swing arm does not reach the maximum swing angle position, the first sliding shaft 27 can be outside the fixed part 7 or the locking swing arm.

[0320] In some embodiments, the first matching sliding groove 71 further comprises an arc-shaped groove section 712 connected to the front side of the horizontal groove section 711. The extension path of the arc-shaped groove section 712 is adapted to the relative rotation of the fixed part 7 and the locking swing arm, that is, the first sliding shaft 27 is in the first matching sliding groove 71 throughout the swing stroke of the swing arm, and the stability of the swing arm during swing is improved.

[0321] The present application does not limit the specific sliding fit mode of the first sliding shaft 27 and the first matching sliding groove 71. For example, the diameter of the first sliding shaft 27 is set to be smaller, the width of the sliding groove of the first matching sliding groove 71 is set to be larger, and the first sliding shaft 27 and the first matching sliding groove 71 are gap-fitted. The first sliding shaft 27 can be inserted into the first matching sliding groove 71 to a greater depth, for example, the end face of the first sliding shaft 27 directly abuts the bottom wall face of the first matching sliding groove 71, or there is a preset distance value between the end face of the first sliding shaft 27 and the bottom wall face of the first matching sliding groove 71.

[0322] Since the first sliding shaft 27 rotates relative to the first matching sliding groove 71 for a long time, the first sliding shaft 27 and the fixed part 7 can be made of different materials. For example, the first sliding shaft 27 is made of copper, and the fixed part 7 is made of iron; or the first sliding shaft 27 is made of iron, and the fixed part 7 is made of copper.

[0323] In some embodiments, a bearing can also be arranged between the first sliding shaft 27 and the first matching sliding groove 71, and through rotation of the bearing, relative movement between the first sliding shaft 27 and the first matching sliding groove 71 is converted into relative rotation between the outer ring of the bearing and the first matching sliding groove 71, thereby reducing wear and tear of the first sliding shaft 27.

[0324] Of course, in other embodiments, a roller can also be arranged on the first sliding shaft 27, and the material of the roller can be plastic or rubber, etc.

[0325] In some embodiments, the first matching sliding groove 71 is arranged on the fixed portion 7, and the arc-shaped groove segment 712 is arranged to penetrate the lower end surface of the fixed portion 7 away from the end of the horizontal groove segment 711. In this way, the first sliding shaft 27 is facilitated to be installed and to slide into the first matching sliding groove 71, and at the same time, the height of the fixed portion 7 in the up-down direction is reduced, the size of the fixed portion 7 is reduced, and the layout space of the structure is saved.

[0326] Further, in order to reasonably set the size of the swing arm, the side end portion of the locking swing arm away from the other swing arm is provided with a protruding arm portion 28 extending in the width direction of the locking swing arm, and the first sliding shaft 27 is arranged on the protruding arm portion 28.

[0327] Corresponding to the locking swing arm being in a horizontal state, the first sliding shaft 27 is at the highest position of its sliding track, and the locking swing arm is continuously swung upward so that the swing angle of the locking swing arm is set to an obtuse angle. At this time, the first sliding shaft 27 slides downward in an arc shape, and therefore, in some embodiments, on the center line of the first matching sliding groove 71, the arc-shaped vertex of the arc-shaped groove segment 712 is higher than the horizontal groove segment 711, so that the locking swing arm is locked only after being at the maximum swing angle position, thereby being able to maintain locking of the lower basket 700 at the highest position.

[0328] The stability of the locking swing arm during swinging is also a performance parameter to be considered in the present application. In some embodiments, one of the fixed portion 7 and the locking swing arm is further provided with a second sliding shaft 29, and the other is further provided with a second matching sliding groove 72, and the second sliding shaft 29 is slidingly installed in the second matching sliding groove 72. Through the cooperation of the two sliding matching structures, the stability of the overall movement of the lifting mechanism 100 is improved.

[0329] The application does not limit the specific sliding fit mode of the second sliding shaft 29 and the second fit sliding groove 72. For example, the diameter of the second sliding shaft 29 is set to be small, the sliding groove width of the second fit sliding groove 72 is set to be large, and the second sliding shaft 29 and the second fit sliding groove 72 are gap fit. The second sliding shaft 29 can be inserted into the second fit sliding groove 72 to a deep depth, for example, the end face of the second sliding shaft 29 directly abuts against the bottom wall face of the second fit sliding groove 72, or a preset distance value is spaced between the bottom wall face of the second fit sliding groove 72.

[0330] Since the second sliding shaft 29 rotates relative to the second fit sliding groove 72 for a long time, the second sliding shaft 29 and the fixed part 7 can be set to be different materials. For example, the second sliding shaft 29 is set to be copper material, and the fixed part 7 is set to be iron material. Alternatively, the second sliding shaft 29 is set to be iron material, and the fixed part 7 is set to be copper material.

[0331] In some embodiments, a bearing can be further arranged between the second sliding shaft 29 and the second fit sliding groove 72. The relative movement between the second sliding shaft 29 and the second fit sliding groove 72 is converted into the relative rotation between the outer ring of the bearing and the second fit sliding groove 72 through the rotation of the bearing, so as to reduce the wear loss of the second sliding shaft 29.

[0332] In some embodiments, the second fit sliding groove 72 is arranged on the fixed part 7. The arc-shaped groove segment 712 is arranged penetrating the lower end face of the fixed part 7 away from one end of the horizontal groove segment 711. In this way, the installation of the second sliding shaft 29 is facilitated, and the second sliding shaft 29 is easily slid into the second fit sliding groove 72. At the same time, the height of the fixed part 7 in the up-down direction is reduced, the size of the fixed part 7 is reduced, and the structural layout space is saved.

[0333] The application does not limit the specific arrangement position of the first sliding shaft 27 and the first fit sliding groove 71. For example, the first sliding shaft 27 can be arranged on the locking swing arm, and the first fit sliding groove 71 can be arranged on the fixed part 7. Alternatively, the first sliding shaft 27 can be arranged on the fixed part 7, and the first fit sliding groove 71 can be arranged on the locking swing arm. Similarly, the second sliding shaft 29 can be arranged on the locking swing arm, and the second fit sliding groove 72 can be arranged on the fixed part 7. Alternatively, the second sliding shaft 29 can be arranged on the fixed part 7, and the second fit sliding groove 72 can be arranged on the locking swing arm.

[0334] The extension track of the second matching sliding groove 72 can be similar to that of the first matching sliding groove 71, or be connected in the manner of the arc-shaped groove segment 712 and the horizontal groove segment 711. During the swinging of the two swing arms, the stability of the two swing arms is poor, but after the locking swing arm is locked, the stability of the two swing arms is relatively good. Therefore, the length of the second matching sliding groove 72 can be set to be short, that is, only the arc-shaped groove segment 712 is provided. In some embodiments, the second matching sliding groove 72 is arranged on the fixed part 7, and the second matching sliding groove 72 is arranged on the rear end surface of the fixed part 7. In this way, the horizontal groove segment 711 of the second matching sliding groove 72 is omitted, the size of the fixed part 7 is reduced, and the layout space of the structure is saved.

[0335] In some embodiments, referring to FIGS. 38 and 40, the first sliding shaft 27 and the second sliding shaft 29 are arranged on the locking swing arm, and the first sliding shaft 27 is arranged on the side of the second sliding shaft 29 away from the fixed arm 1. In this way, only the shape of the locking swing arm needs to be set to quickly realize the installation of the first sliding shaft 27 and the second sliding shaft 29.

[0336] In the manufacturing process, the shape of the locking swing arm can be cut by flame cutting or plasma cutting, and then the first sliding shaft 27 and the second sliding shaft 29 are installed on the convex arm of the locking swing arm.

[0337] The first sliding shaft 27 and the second sliding shaft 29 can be integrally connected with the locking swing arm by welding.

[0338] Some detailed features of the dishwasher 2000 proposed in the present application are further described below. Referring to FIGS. 25 to 27, the dishwasher 2000 further includes a cabinet 600 and a lower basket 700. The cabinet 600 forms a containing space in which the fixed arm 1 of the lifting mechanism 100 is arranged. The lower end of the lower basket 700 is connected with a slide rail, and the slide rail includes the horizontal arm 6 of the lifting mechanism 100. That is, the horizontal arm 6 constitutes part of the slide rail. The slide rail includes multiple slide rail segments that are slidably sleeved with each other, and the forward movement of the lower basket 700 relative to the cabinet 600 in the initial position is realized through the cooperation of the multiple slide rail segments.

[0339] In some embodiments, two lifting mechanisms 100 are arranged, and are arranged on the left and right sides of the lower basket 700. That is, the stability of the activity of the lower basket 700 is improved through the synchronous activity of the two lifting mechanisms 100 to bidirectionally support the activity of the lower basket 700.

[0340] The fixed arms 1, the swing arms and the horizontal arm 6 in the two lifting mechanisms 100 can be provided as sheet-shaped structures, thereby reducing the space occupied by the cabinet 600.

[0341] In some other embodiments, the lower basket 700 is provided with a fixing part 7 at each of the left and right sides, and a first matching sliding groove 71 and a second matching sliding groove 72 are arranged on each fixing part 7. A first sliding shaft 27 and a second sliding shaft 29 are further arranged on the second swing arm 2b. The first matching sliding groove 71 comprises an arc-shaped groove segment 712 and a horizontal groove segment 711. In this way, the stability of the movement of the lower basket 700 is further improved.

[0342] Household appliances include dishwashers, refrigerators, freezers or storage cabinets, etc., which are usually provided with shelves. There are low-position shelves in the shelves, and for this reason, when storing articles in the low-position shelves, the user needs to bend down to take and place the articles. Taking the dishwasher as an example, when taking and placing bowls in the lower basket, if the lower basket is not lifted, the user needs to bend down, and the user experience is not good.

[0343] Therefore, the industry has provided a lifting mechanism to lift the low-position shelves to a certain height. However, after lifting the shelves, when the user places articles, the swing arm of the lifting mechanism may swing downward due to the load, so that the shelves will move up and down, which is not conducive to the user to take and place the articles, and the user experience is poor.

[0344] Based on this, the present application provides a locking member to solve the problem of how to avoid the shelves from moving up and down due to load changes. FIGS. 41-54 are structural schematic diagrams of household appliances provided by the present application.

[0345] Please refer to FIGS. 41-45. In an embodiment of the present application, the locking member 3 is used on the lifting mechanism 100 of the household appliance 1000 and is arranged on the first shelf 300 to cooperate with the swing arm 2 of the lifting mechanism 100 to limit 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 lifting limit position and the first shelf 300 moves to the top locking position. The locking member 3 comprises a lock body 31, at least one guide rail and a limiting structure. One side of the lock body 31 in the left-right direction is the mounting side 311, and the guide rail is arranged on the mounting side 311. The guide rail has an arc-shaped segment connected to the front end thereof, which provides an arc-shaped sliding track for the sliding part on the swing arm 2. The limiting structure is arranged corresponding to the tail end of the guide rail, and the limiting structure can limit the sliding part in the up-down and / or front-back direction when the first shelf 300 moves to the top locking position.

[0346] In the technical solution of the present application, by arranging the limiting structure at the tail end of the guide rail, when the first shelf 300 is lifted to the top lifting limit position, only the first shelf 300 needs to be continuously driven to make the sliding part at the tail end of the guide rail slide onto the limiting structure, so that the limiting structure can limit the sliding part up and down and / or front and back, so as to limit the first shelf 300 at the top locking position. In use, the user first pulls the first shelf 300 forward to make the first shelf 300 move forward, so that the swing arm 2 of the lifting mechanism 100 can swing the first shelf 300 forward and upward to the top lifting limit position, and then continue to drive the first shelf 300 to move (which can be forward or backward), so that the swing arm 2 stops swinging, that is, the first shelf 300 is locked. In the entire lifting and locking process, the user only needs to drive the first shelf 300 to move, which can complete the lifting and locking of the first shelf 300, so that the first shelf 300 does not move up and down due to load changes, which is convenient for the user to take and place articles and has high operation simplicity.

[0347] In the present application, the user is used as a direction reference, forward means the direction towards the user or the side of the household appliance 1000 provided with a door, backward means the direction opposite to the forward direction, specifically the direction away from the user, and up and down means the direction with gravity as a reference. Further, since the first shelf 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 its material can be various, specifically, the lock body 31 can be a metal alloy material such as steel or aluminum alloy, or an inorganic non-metallic material such as ceramic, or a high polymer material such as plastic. As long as it can support the first shelf 300 after loading, the present application does not limit it. Further, the shape of the lock body 31 can be various, which can be rectangular or pentagonal, and the present application does not limit it.

[0348] Further, the specific implementation form of the limiting structure is not limited, which can be in the form of a limiting groove 351, or in the form of a limiting rib or a limiting face, etc., which is not limited here. One side of the lock body 31 in the left-right direction is the mounting side 311, and the side of the lock body 31 opposite to the mounting side 311 is fixedly mounted on the first shelf 300, so as to move together with the first shelf 300.

[0349] The guide rail has an arc-shaped segment connecting its head end to match the sliding trajectory of the sliding part on the swing arm 2, thereby guiding the sliding part of the swing arm 2. Furthermore, the number of the guide rail and the sliding part is not limited; there can be one or more, etc., and no limitation is made here. The specific implementation of the guide rail and the sliding part is not limited; the guide rail can be configured as a guide groove 321, and the sliding part can be configured as a sliding column, pulley, etc. Alternatively, the guide rail can be configured as a guide rib, and the sliding part as a sliding groove. For example, the sliding part includes two sliding columns spaced apart, with the gap between the two columns forming the sliding groove. Alternatively, the sliding part can be directly configured as a sliding protrusion, and then a sliding groove can be formed on it, etc., and no limitation is made here.

[0350] The household appliance 1000 may be a dishwasher, oven, refrigerator, etc. The household appliance 1000 includes a housing 200, and a receiving cavity 201 is formed inside the housing 200. A first shelf 300 is connected to the receiving cavity 201 through a lifting mechanism 100. Utensils to be placed on the first shelf 300 may be tableware such as bowls, plates, dishes, chopsticks, knives and forks, as well as baked food or items to be refrigerated, etc.

[0351] Furthermore, some household appliances 1000 may have only one shelf, such as a first shelf 300. Others may have multiple shelves; in embodiments where multiple shelves are provided in the household appliance 1000, two shelves may be provided, such as a first shelf 300 and a 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 in this application, the first shelf 300 corresponds to the upper shelf, and the second shelf 400 corresponds to the lower shelf.

[0352] 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.

[0353] The first shelf 300 has several important positions during its movement, and the common positions include a bottom storage position (as shown in FIG. 46), a bottom position to be lifted (as shown in FIG. 49), a top lifting limit position (as shown in FIG. 51), and a top locking position (as shown in FIG. 53).

[0354] When the first shelf 300 has the four positions of the bottom storage position, the bottom position to be lifted, the top lifting limit position, and the top locking position, the swing arm 2 is at the lower swing limit position, and the corresponding first shelf 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 shelf 300 is at the top lifting limit position and the top locking position.

[0355] The guide rail can be entirely curved or partially curved, and the application does not limit this. Specifically, in an embodiment of the application, referring to FIGS. 42 to 44, the guide rail includes a first guide rail 32 that is used in sliding cooperation with the first sliding part 23 of the swing arm 2. The arc-shaped section of the first guide rail 32 is a first arc-shaped section 321 that is arranged in a downward curve from the leading end to the trailing end of the first guide rail 32. The limiting structure includes a first limiting part 340 that is arranged corresponding to the trailing end of the first arc-shaped section 321. The first limiting part 340 is used to limit the first sliding part 23 upward and downward.

[0356] In this embodiment, the first guide rail 32 is arranged in a downward extension from its leading end to its trailing end. Correspondingly, during the lifting of the first sliding part 23, the first sliding part 23 moves downward, which can guide the movement track of the first shelf 300 during its lifting and improve the stability during its movement. When the first shelf 300 reaches the top lifting limit position, the first sliding part 23 moves along the first guide rail 32 to the trailing end thereof, and then the first shelf 300 continues to move to the top locking position. At this time, the first sliding part 23 moves to the first limiting part 340 from the first guide rail 32 and is limited by the first limiting part 340. In this way, by arranging the first arc-shaped section 321, the first sliding part 23 is guided to move downward to the trailing end of the first guide rail 32, so that the first limiting part 340 can limit the first sliding part 23 upward and downward.

[0357] Further, the first arc-shaped section 321 is arranged upwardly convexly, so that the movement track of the first arc-shaped section 321 can match the sliding path of the first sliding part 23, thereby enabling the first guide rail 32 to guide the first sliding part 23 to move to the first limiting part 340, so as to limit the first limiting part 340 upwardly and downwardly. Of course, in other embodiments, the first arc-shaped section 321 can also be arranged downwardly concavely, and the like, which are not limited in the present application.

[0358] In an embodiment of the present application, referring to FIGS. 42 and 43, the first guide rail 32 is arranged as a first guide groove 321, the leading end of the first guide groove 321 is arranged through the lock body 31, for the first sliding part 23 on the swing arm 2 to slide in, and the trailing end of the first guide groove 321 is arranged downwardly through the lock body 31, so as to form a lower end notch, the periphery of the lower end notch and at the rear position is formed with a stop surface 341, and the stop surface 341 forms the first limiting part 340.

[0359] In the present embodiment, when the lifting mechanism 100 lifts the first shelf 300 upwardly to the upper limit position, the first sliding part 23 slides along the first guide groove 321 to the stop surface 341, so as to limit the swing arm 2 from rotating upwardly.

[0360] Further, the specific forming mode of the stop surface 341 is not limited, for example, a limiting rib can be arranged convexly on the side surface of the mounting side of the lock body, the lower surface of the limiting rib forms the stop surface 341; or a notch can be formed on the side surface of the mounting side of the lock body, the notch is communicated with the first guide groove 34, and the upper wall surface of the notch forms the stop surface 341, which are all within the protection scope of the present application. Specifically, in the present embodiment, the trailing end of the first guide groove is arranged through the lower end of the lock body 31, and the lower end surface of the lock body 31 forms the stop surface 341, so that the outer wall surface of the lock body 31 can directly form the first limiting part 340, thereby not needing to additionally arrange the first limiting part 340, facilitating production and processing, and being capable of saving cost.

[0361] Referring to FIGS. 44 and 45, in other embodiments, the first guide rail 32 can also be arranged as a guide rib, specifically, the first guide rail 32 is arranged as a first guide rib 322, and the first limiting part 340 includes a limiting boss 342 arranged at the rear side of the trailing end of the first guide rib 32.

[0362] At this time, the first sliding part 23 is 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, or the sliding part is directly configured as a sliding protrusion, and a sliding groove is further formed on the sliding protrusion, etc.

[0363] During the lifting of the first shelf 300, the first sliding part 23 moves on the first guide rib 322, and when the first shelf 300 swings upward to the top lifting limit position and the first shelf 300 moves to the top locking position, the first sliding part 23 moves below the limiting boss 342 and is limited by the limiting boss 342.

[0364] Please refer to FIGS. 42-44, the guide rail includes a second guide rail 330, which is located on the front side of the first guide rail 32 and on the lower side of the first guide rail 32, and is used for sliding cooperation with the second sliding part 24 of the swing arm 2. The second guide rail 330 includes a second arc-shaped section 3311 and a second gently curved section 3312. The second arc-shaped section 3311 is arranged in a gradually upward curved arc shape from the head end to the tail end of the second guide rail 330. The second gently curved section 3312 is connected to the tail end of the second arc-shaped section 3311 at one end and extends backward at the other end. The limiting structure includes a second limiting part 350 arranged corresponding to the second gently curved section 3312, which is used for limiting the second sliding part 24 forward and backward.

[0365] In the embodiment, the first end of the second guide rail 330 is located in front of the first end of the first guide rail 32. During the lifting process, the second sliding part 24 of the swing arm 2 first contacts the first end of the second arc-shaped section 3311, the swing arm 2 rotates upward, and the second sliding part 24 also rotates upward. During the rotation process, the first sliding part 23 moves to contact the first end of the first guide rail 32 and continues to move along the extension direction of the first guide rail 32. When the first shelf 300 reaches the top lifting limit position, the first sliding part 23 and the second sliding part 24 respectively reach the tail end of the first guide rail 32 and the second gentle section 3312. The first shelf 300 continues to move to the top locking position. At this time, the second sliding part 24 moves from the second gentle section 3312 to the second limiting part 350 and is limited by the second limiting part 350. In this way, by arranging the first guide rail 32 and the second guide rail 330, one of them can guide the swing arm 2 in the up-down direction, and the other can guide the swing arm 2 in the front-back direction, which helps to improve the stability of the first shelf 300 during movement. By arranging the first limiting part 340 and the second limiting part 350, the first sliding part 23 and the second sliding part 24 are respectively limited, so as to improve the stability of the first shelf 300 during lifting and locking.

[0366] In an embodiment of the present application, please refer to FIGS. 42-45, the second arc-shaped section 3311 is arranged in an upward convex manner, so that the movement track of the second arc-shaped section 3311 can match the sliding path of the second sliding part 24, thereby enabling the second guide rail 330 to guide the second sliding part 24 to move to the second limiting part 350 to limit the second limiting part 350 in the front-back direction.

[0367] In an embodiment, please refer to FIGS. 42, 43 and 45, the second guide rail 330 is arranged as a second guide groove 3301, the first end of the second guide groove 3301 penetrates the lock body 31, and the second sliding part 24 on the swing arm 2 slides into the second guide groove 3301. The second limiting part 350 is arranged as a limiting groove 351, which is connected with the tail end of the second guide groove 3301 and extends backward. Of course, in another embodiment, the second gentle section 3312 constitutes the limiting groove 351.

[0368] In the embodiment, the first end of the second guide slot 3301 is arranged through the lock body 31, so that when the locking piece 3 moves forward with the first shelf 300, the first end of the second guide slot 3301 can be in contact with the second sliding part 24, the second sliding part 24 on the swing arm 2 slides in, and then the second sliding part 24 moves along the extension direction of the second guide slot 3301. After the first shelf 300 moves to the top lifting limit position, the first shelf 300 can continue to move forward to the top locking position, and the second sliding part 24 moves to the limiting slot 351 by the second guide slot 3301. At this time, the limiting slot 351 can limit the second sliding part 24 in the front and / or up and down direction. In this way, by arranging the rearward extending limiting slot 351, the user only needs to pull the first shelf 300 forward during the entire lifting and locking process. The first shelf 300 can be lifted and locked, so that the first shelf 300 can be locked by pulling forward, which is consistent with the moving direction of the first shelf 300, and is convenient for the user to operate. Of course, in other embodiments, the first shelf 300 can also be locked by retreating, that is, after the first shelf 300 moves to the tail end of the second guide slot 3301, the first shelf 300 is pushed to retreat to lock the first shelf 300. However, this way is opposite to the moving direction of the first shelf, and the user experience is poor.

[0369] The limiting slot 351 can be arranged in various ways, which can be arranged in a horizontal direction in the front and rear direction, as shown in FIGS. 43 and 44, or can be arranged in an inclined manner in the up and down direction, as shown in FIG. 42. Specifically, in an embodiment of the application, the limiting slot 351 is arranged in an upward inclined manner away from the second guide slot 3301. In this way, the second guide slot 3301 is arranged in an inclined manner, so that the second guide slot 3301 can smoothly transition to the limiting slot 351, so that the second sliding part 24 can smoothly slide into the limiting slot 351 when the locking piece 3 moves forward. The limiting slot 351 extends upward to cooperate with the abutting surface 341 to limit the movement of the swing arm 2 and the locking piece 3 in the up and down direction, thereby realizing forward locking. Of course, in other embodiments, the limiting slot 351 can also be arranged in a downward inclined manner, and the like, which is not limited in the application.

[0370] Further, if the inclination angle of the limiting groove 351 is small, the second sliding part 24 is not easy to be limited, and if the inclination angle of the limiting groove 351 is large, the second sliding part 24 is not easy to slide into the limiting groove 351. Therefore, in the embodiment, the included angle between the limiting groove 351 and the front-to-back direction is α, wherein 15°≤α≤60°, which facilitates the second sliding part 24 to slide into the limiting groove 351 and enables the second sliding part 24 to be limited so as to prevent the swing arm 2 and the locking piece 3 from moving relative to each other in the front-to-back direction. It can be understood that the included angle between the limiting groove 351 and the front-to-back direction can be an integer value of 60°, or an arbitrary 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-mentioned integer values, such as a degree value between 50° and 60°, which can be 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, etc. Of course, it can also be a decimal degree value. The above-mentioned values are within the protection scope of the present application.

[0371] In an embodiment of the present application, referring to FIGS. 42 and 43, at the connection between the limiting groove 351 and the second guide groove 3301, the inner side wall 2012 of the limiting groove 351 is provided with a clamping rib 360. In this way, by providing the clamping rib 360, a damping structure is formed to hold the second sliding part 24 in place, so as to remind the user that the first shelf 300 has been moved to the position, thereby helping to improve the user experience. Further, the clamping rib 360 can be one or a plurality of, etc., which is not limited in the present application. Specifically, two clamping ribs 360 are provided, and the two clamping ribs 360 are respectively arranged on opposite sides of the limiting groove 351. In this way, by providing two clamping ribs 360, on the one hand, the passing width of the limiting groove 351 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 351, so that the second sliding part 24 can smoothly slide into the limiting groove 351.

[0372] The clamping rib 360 and the lock body 31 can be integrally formed or assembled, which is not limited in the present application.

[0373] Since the lock body 31 needs to support the first shelf 300, it needs to have certain hardness and strength, so that the lock body 31 is not easy to deform, so that the second sliding part 24 is not easy to pass through the clamping rib 360. Therefore, in the embodiment, the mounting side 311 of the lock body 31 is provided with a deformation groove 37 on the periphery of the limiting groove 351. In this way, by providing the deformation groove 37, the strength of the limiting groove 351 is weakened, so that the limiting groove 351 can be deformed in the width direction, so that the second sliding part 24 can slide through the clamping rib 360.

[0374] In an embodiment of the present application, the deformation groove 37 is arc-shaped, so that the limiting groove 351 is arranged in the deformation groove 37 in an arc-shaped manner, so as to weaken the strength of the limiting groove 351, facilitating the sliding of the second sliding part 24. In another embodiment, a plurality of deformation grooves 37 are arranged, and the plurality of deformation grooves 37 are arranged in a spaced manner. In this way, by arranging a plurality of deformation grooves 37, the limiting groove 351 is surrounded by the deformation grooves 37, so as to weaken the strength around the limiting groove 351, so that the second sliding part 24 can smoothly slide through the clamping rib 360. At the same time, the plurality of deformation grooves 37 are arranged in a spaced manner, so as to avoid the place where the limiting groove 351 and the first guide groove 321 are close to each other, so as to avoid weakening the strength of the first guide groove 321 and reducing the possibility of the first sliding part 23 sliding out of the first guide groove 321.

[0375] To achieve the above object, please refer to FIG. 46, FIG. 49, FIG. 51 and FIG. 53, the application also provides a lifting mechanism 100 for lifting a first shelf 300 of a household appliance 1000, so that the first shelf 300 can be switched between a bottom position to be lifted and a top lifting limit position, the lifting mechanism 100 comprises a fixed arm 1, a swing arm assembly and a locking piece 3, the fixed arm 1 is arranged in a receiving cavity 201 of the household appliance 1000, the swing arm assembly comprises at least a first swing arm 2, both ends of the first swing arm 2 are provided with a first hinged mounting portion 21 and a second hinged mounting portion 22, the first hinged mounting portion 21 is arranged on the fixed arm 1, and the second hinged mounting portion 22 is arranged on the first shelf 300 directly or indirectly, and the locking piece 3 is the above-mentioned locking piece 3, so that in use, the user first pulls the first shelf 300 forward, and the first shelf 300 is moved forward, so that the swing arm 2 of the lifting mechanism 100 swings the first shelf 300 forward and upward to the top lifting limit position, and then the first shelf 300 is continuously driven to stop the swing arm 2, so that the first shelf 300 is locked, and in the whole lifting and locking process, the user only needs to drive the first shelf 300 to complete the lifting and locking of the first shelf 300, so that the first shelf 300 does not move up and down due to load changes, the user can conveniently take and place objects, and the operation is simple and convenient.

[0376] The specific structure of the locking piece 3 is referred to the above-mentioned embodiments, and since the lifting mechanism 100 adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0377] In some embodiments, please refer to FIG. 41 and FIG. 52, the lifting mechanism 100 further comprises a slide rail structure 500, the slide rail structure comprises a plurality of slide rails connected to each other in an extension and retraction mode, the plurality of slide rails comprises at least a first slide rail 501 and a last slide rail 502, the first slide rail 501 is connected to the second hinged portion directly or indirectly, and the last slide rail 502 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 be lifted to the top lifting limit position, when the first shelf 300 is at the top lifting limit position, the plurality of slide rails are arranged in an extension mode and can slide relative to each other, so that the first shelf 300 can slide to a top locking position, the first shelf 300 can be switched between a bottom storage position and the bottom position to be lifted, and the position relationship of the first shelf 300 can be adjusted through the extension and retraction of the plurality of slide rails, so that the first shelf 300 can be moved to the bottom storage position and stored in the receiving cavity 201.

[0378] It should be noted that the connecting piece 40 is connected to the first section slide rail 501, and the connection can be achieved by bonding or welding, that is, the connecting piece 40 can be bonded to the first section slide rail 501 by using adhesive. Of course, the connecting piece 40 and the first section slide rail 501 can also be welded by using welding, for example, the connecting piece 40 and the first section slide rail 501 are both made of metal, such as iron or steel, and the connecting piece 40 can be welded to the first section slide rail 501.

[0379] In some embodiments, the connecting piece 40 and the first section slide rail 501 are integrally formed, that is, the connecting piece 40 and the first section slide rail 501 are one component. In this way, the number of parts is reduced, and the assembly time and cost are saved.

[0380] The tail section slide rail 502 is connected to the first shelf 300. The first shelf 300 can be formed by alternately arranging some small round bars in the transverse or longitudinal direction. For connecting the slide rail, a connecting block can be used to assist the connection. Some clamping grooves or other mechanisms are arranged on the connecting block to clamp the small round bars on the first shelf 300. A screwing structure is also provided on the connecting block to directly connect the tail section slide rail 502. In this way, the connection is more reliable.

[0381] Further, the number of slide rails in the slide rail structure 500 is not limited in the present application. For example, the number of slide rails can be 2, 3, or more than 3, such as 4, 5, 6, 7, etc. The number of slide rails is not limited in the present application. Specifically, in the present embodiment, the slide rail structure 500 further includes an intermediate slide rail 503. The intermediate slide rail 503 is arranged between the first section slide rail 501 and the tail section slide rail 502. In this way, by arranging the intermediate slide rail 503, the sliding stroke of the first shelf 300 is increased, so that the first shelf 300 can be completely slid out of the accommodating cavity 201, so as not to interfere with other structures in the shell 200 when the lifting mechanism 100 lifts the first shelf 300, such as the second shelf 400. Further, the number of intermediate slide rails 503 can be one or more, etc. The number of intermediate slide rails 503 is not limited in the present application. However, the more the number of intermediate slide rails 503, the more complex the slide rail structure 500, and the higher the cost. Therefore, in the present embodiment, one intermediate slide rail 503 is arranged, which can meet the requirements of the movement stroke of the first shelf 300 and reduce the cost of the slide rail structure 500.

[0382] In an embodiment of the present application, the number of the swing arms 2 is not limited, and can be one or two. In the embodiment where two swing arms 2 are provided, the lifting mechanism 100 is partially configured as a four-bar linkage, and is a parallelogram four-bar linkage. In an embodiment of the present application, referring to FIG. 51, two swing arms 2 are provided, and the lifting mechanism 100 further comprises a connecting piece 40 connected to the first link rail 501. Both the second hinged mounting portions 22 are hinged to the connecting piece 40. By providing the connecting piece 40, a hinged fitting portion can be provided on the connecting piece 40, so as to connect the swing arm 2 with the first shelf 300, which can simplify the structure of the first shelf 300 and facilitate the arrangement of the first shelf 300.

[0383] It should be noted that the state of the connecting piece 40 remains unchanged during the entire movement of the lifting mechanism 100. In this way, the state of the first shelf 300 remains unchanged during the entire movement, so that the storage of the to-be-stored articles has better stability.

[0384] Further, the part of the connecting piece 40 for connecting the first shelf 300 can always be arranged in a horizontal state. In this way, the first shelf 300 is always in a horizontal state during the movement. It should be noted that the horizontal state can be an absolute horizontal direction, or a direction with a certain angle with the horizontal direction, for example, an angle within 10°.

[0385] In an embodiment of the present application, referring to FIG. 41, if the length of the limiting groove 351 is too long, it is not convenient for the second sliding portion 24 to slide in and out of the limiting groove 351, and if the length of the limiting groove 351 is too short, the limiting effect on the second sliding portion 24 is not good. Therefore, in the present embodiment, the length of the limiting groove 351 is L1, and the width of the second sliding portion 24 is D, wherein D / 3≤L1≤2 / 3D, which is convenient for the second sliding portion 24 to slide in and out of the limiting groove 351, and can limit the second sliding portion 24 to prevent the swing arm 2 and the locking piece 3 from moving relative to each other in the front-rear direction.

[0386] To achieve the above object, the present application further provides a household appliance 1000, comprising a shell 200, a lifting mechanism 100, and a first shelf 300. The shell 200 is formed with a receiving cavity 201. The lifting mechanism 100 comprises the lifting mechanism 100 as described above. The fixed arm 1 of the lifting mechanism 100 is arranged on a side wall 2012 of the receiving cavity 201. The first shelf 300 is hingedly connected to the swing arm 2 of the lifting mechanism 100. The lifting mechanism 100 switches the first shelf 300 between a bottom to-be-lifted position and a top lifted limit position.

[0387] In some household appliances 1000, the shelves are provided with one, two or more. In the technical solution of the present application, a second shelf 400 is further provided in the accommodation cavity 201. Corresponding to the top lifting limit position, the lower end of the first shelf 300 protrudes 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, the frequency of bending over by the user is reduced, and the user experience is improved.

[0388] It should be noted that in the embodiment of the household appliance 1000 with two shelves, the first shelf 300 is a lower shelf, and the second shelf 400 is an upper shelf. When the first shelf 300 is at the top storage position and the second shelf 400 is in the accommodation cavity 201, the first shelf 300 is below the second shelf 400 and is arranged oppositely.

[0389] In view of the above-mentioned embodiments, the user needs to alternate the use of the first shelf 300 and the second shelf 400, that is, when using the first shelf 300 to lift, try to keep the second shelf 400 in the accommodation cavity 201; when using the second shelf 400, try to keep the first shelf 300 in the accommodation cavity 201, or try not to lift the second shelf 400.

[0390] Of course, for the upper end of the first shelf 300 and the upper end of the second shelf 400, in some embodiments, corresponding to the top lifting limit position and the top lifting locking position of the first shelf 300, the upper end of the first shelf 300 protrudes the upper end of the second shelf 400, that is, under the premise that the first shelf 300 and the second shelf 400 have the same depth, the first shelf 300 can be at a higher position.

[0391] Corresponding to the household appliance 1000 being a dishwasher product, the first shelf 300 corresponds to the lower basket of the dishwasher, and the second shelf 400 corresponds to the upper basket of the dishwasher. When using the lower basket of the dishwasher, the lifting mechanism 100 lifts the lower basket of the dishwasher to a position higher than the upper basket. This state has the same operating height as when the user uses the upper basket of the dishwasher, or a higher height, and the user's operation experience will be better.

[0392] The following describes the user's use of the household appliance 1000 in relation to the structure of the household appliance 1000, with reference to the first shelf 300:

[0393] 1. The first shelf 300 is in a bottom storage position, as shown in FIGS. 46-48:

[0394] This state is a state in which the user is not using, or has just started using, or has finished using the first shelf 300. In these states, the first shelf 300 is in the receiving cavity 201 of the household appliance 1000. As can be seen from the figure, the first shelf 300 is stored in the receiving cavity 201. At this time, the swing arm 2 is at the lower swing limit position, and the sliding part is in a separated state from the guide rail.

[0395] 2. The first shelf 300 is in a bottom lifting position, as shown in FIGS. 49-50:

[0396] This state is a state in which the user pulls the first shelf 300 out of the receiving cavity 201, or a state in which the user lowers the first shelf 300 after use. In these states, the first shelf 300 is at the opening of the receiving cavity 201. The swing arm 2 is still at the lower swing limit position. At this time, the sliding part is in contact with the leading end of the guide rail. When the guide rail is provided with a plurality of guide rails, such as the first guide rail 32 and the second guide rail 330, the sliding part is correspondingly provided with a plurality of sliding parts, including 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 330. Then, the first shelf 300 continues to move forward and upward.

[0397] 3. The first shelf 300 is in a top lifting limit position, as shown in FIGS. 51-52:

[0398] This state is a state in which the user lifts the first shelf 300, or a state in which the user exits the lock after use. In these states, the first shelf 300 is at the maximum height of lifting. As can be seen from FIG. 51, 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 swing limit position.

[0399] 4. The first shelf 300 is in a top locking position, as shown in FIGS. 53-54:

[0400] This state is a locking state after the user lifts the first shelf 300. At this time, the user can take and place the items to be placed. In these states, the first shelf 300 is at the maximum height of lifting. As can be seen from FIGS. 53-54, the first shelf 300 is moved forward a distance relative to the top lifting limit position in the top locking position. The sliding part of the swing arm 2 slides to the limiting structure at the tail end of the guide rail. 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.

[0401] The following describes a complete use process of the user:

[0402] When the user needs to use the household appliance 1000, first open the door of the household appliance 1000. The user pulls the first shelf 300 forward from the bottom storage position to the bottom lifting position in the containing cavity 201. Under the swing 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. The first shelf 300 moves from the top lifting limit position to the top locking position. In the locking state, the user can take and place the items to be placed in the first shelf 300 with reduced bending frequency.

[0403] When the user finishes taking and placing the items to be placed, the user pushes the first shelf 300 backward to unlock the first shelf 300 and move it from the top unlocking position to the top lifting limit position. The user lowers the first shelf 300 to move it from the top lifting limit position to the bottom lifting position. The user continues to push the first shelf 300 backward to move it from the bottom lifting position to the bottom storage position. When the first shelf 300 is in the bottom storage position, the user can close the door and complete the use of the household appliance 1000.

[0404] The above only describes exemplary embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields based on the technical concept of the present application, and the contents of the present application and the accompanying drawings are included in the patent protection scope of the present application.

Claims

1. A lock member for use in a lifting mechanism of a household appliance and arranged on a first shelf for cooperating with a swing arm to limit the relative movement between the swing arm and the first shelf when the swing arm swings the first shelf upward to a top lifting limit position and the first shelf moves to a top locked position, wherein, The locking member comprises: a lock body, one side of which in the left-right direction is a mounting side; a first guide rail provided on the mounting side of the lock body, a leading end of the first guide rail being configured to allow a first matching part on the swing arm to slide in; a locking structure comprising a locking part, the locking part being provided on one side of the first guide rail and adjacent to a trailing end of the first guide rail, the locking part being elastically movable along the width direction of the first guide rail and being configured to be elastically returned to a locking position provided close to the first guide rail.

2. The locking member of claim 1, wherein, The first guide rail is provided as a first guide groove, one side wall of the first guide groove being provided with a mounting groove, and the locking part is mounted in the mounting groove. The lock body is provided with an elastic member, the elastic member being configured to provide an elastic force to the locking part.

3. The locking piece of claim 1 or 2, wherein A communication groove is provided through both sides of the lock body, one end of the communication groove being communicated with the mounting groove. The locking structure further comprises a mounting part and a connecting part, the mounting part being located on the other side of the lock body, the locking part being provided through the communication groove, and the connecting part connecting the mounting part and the locking part. The elastic member is provided on the other side of the lock body and between the mounting part and the lock body.

4. The locking piece of claim 2 or 3, wherein A limiting protrusion is provided on the side wall of the mounting groove adjacent to the groove opening, and a deformation groove is provided on the lock body corresponding to the side edge of the mounting groove.

5. The locking piece of any one of claims 1 to 4, wherein, The first guide rail is provided as a first guide groove, the mounting side of the locking member is provided with an avoiding groove communicated with the first guide groove, the locking part is provided in the avoiding groove, one end of the locking part is connected with the lock body, and the other end of the locking part at least partially extends into the first guide groove.

6. The locking member of claim 5, wherein, The avoiding groove is provided on the lower side of the first guide groove.

7. The locking piece of any one of claims 1 to 6, wherein, The mounting side of the lock body is provided with a second guide groove, the second guide groove being located above the first guide groove and being configured to slide with a second sliding part of the swing arm; The mounting side of the lock body is provided with an elastic guide part, one end of the elastic guide part extending to one side of the second guide groove, the elastic guide part being elastically movable along the left-right direction, the elastic guide part being configured to elastically avoid the other side of the lock body to guide the second sliding part to slide into the second guide groove.

8. The locking member of claim 7, wherein, The elastic guide part is provided on the side of the second guide groove adjacent to the first guide groove.

9. The locking piece of claim 7 or 8, wherein Both ends of the elastic guide part correspond to an inner end and an outer end, the inner end being provided adjacent to the second guide groove, and the elastic guide part has a guide segment provided adjacent to the outer end and inclined.

10. A lifting mechanism to lift a first shelf of a household appliance so that the first shelf can be switched between a bottom, to-be-lifted position and a top, lifted limit position, wherein, The lifting mechanism comprises: a fixed arm configured to be mounted in a receiving cavity of the household appliance; at least one swing arm, the swing arm being provided with a first hinged mounting part and a second hinged mounting part, the first hinged mounting part being mounted on the fixed arm, the second hinged mounting part being configured to be directly or indirectly mounted on the first storage rack, and the swing arm being provided with a first sliding part; and a locking member comprising the locking member according to any one of claims 1 to 9.

11. A household appliance, wherein, The household appliance comprises: a housing formed with a receiving cavity; a lifting mechanism comprising the lifting mechanism according to claim 10, the fixed arm of the lifting mechanism being provided on the side wall of the receiving cavity; and A first shelf is hingedly connected to the swing arm of the lifting mechanism; The lifting mechanism enables the first shelf to switch between a bottom standby lifting position and a top lifting limit position.

12. The household appliance of claim 11, wherein, The household appliance further comprises a slide rail structure, the slide rail structure comprises a plurality of slide rails which are connected to each other in an extendable and retractable manner, the plurality of slide rails at least comprises a first slide rail and a last slide rail, the first slide rail is directly or indirectly connected to the second hinged part of the swing arm, and the last slide rail is connected to the first shelf; The swing arm can swing the first shelf from the bottom standby lifting position to the top lifting limit position forward and upward, when the first shelf is in the top lifting limit position, the plurality of slide rails are arranged in an extendable and retractable manner, and can slide relative to each other, so that the first shelf can slide to a top locking position.

13. The household appliance of claim 11 or 12, wherein, The swing arm is provided in two, the lifting mechanism further comprises a connecting piece connected to the first slide rail, the second hinged mounting parts of the two swing arms are both hingedly connected to the connecting piece, and the connecting piece is mounted on the first shelf.

14. The household appliance of claim 13, wherein, A second shelf is further arranged in the accommodating cavity, and the lower end of the first shelf is higher than the lower end of the second shelf at the top lifting limit position.

15. The household appliance of claim 14, wherein, The household appliance comprises a dishwasher, the first shelf is arranged as a lower basket, and the second shelf is arranged as an upper basket.

16. A lifting mechanism for a dishwasher, wherein, The lifting mechanism comprises: A fixed arm; Two swing arms, each of the swing arms has a connecting end and a following end, and each of the connecting ends is hingedly mounted on the fixed arm; and A horizontal arm which is hingedly mounted on the following ends of the two swing arms, the horizontal arm can move upward and forward, and the two swing arms can swing following the movement of the horizontal arm; The swing arm has a swing stroke, the swing stroke defines a swing angle of the swing arm, and the swing angle is arranged as an obtuse angle.

17. The lifting mechanism of claim 16, wherein, The swing angle is α, and 90°<α≤160°.

18. The lifting mechanism of claim 16 or 17, wherein, The projections of the two swing arms in a first vertical plane formed by a left-right direction and an up-down direction are arranged at least partially overlapped; The two swing arms comprise a first swing arm and a second swing arm, the first swing arm is connected to the fixed arm through a first hinged shaft, the second swing arm is connected to the fixed arm through a second hinged shaft, the second hinged shaft has a longitudinal distance along the up-down direction and a transverse distance along the front-rear direction relative to the first hinged shaft, and the longitudinal distance is greater than the transverse distance.

19. The lifting mechanism of claim 18, wherein, The second hinged shaft is located on the front side and the upper side of the first hinged shaft.

20. The lifting mechanism of claim 18 or 19, wherein, The width of the narrowest part of the first swing arm is L1, the width of the narrowest part of the second swing arm is L2, the longitudinal distance is defined as y, and the transverse distance is defined as x, wherein: 0<x≤L1+L2; and / or, 0.5(L1+L2)≤y≤2(L1+L2).

21. The lifting mechanism of any one of claims 16 to 20, wherein, The projections of the two swing arms in a first vertical plane formed by a left-right direction and an up-down direction are arranged at least partially overlapped; The limit position of the horizontal arm comprises a lower limit position, and the two swing arms abut to stop swinging backward at the lower limit position.

22. The lifting mechanism of claim 21, wherein, At least one of the two swing arms is a convex swing arm, which comprises a swing arm body and an abutting convex portion arranged at a side end of the swing arm body facing the other swing arm, and the abutting convex portion is used to abut against the other swing arm.

23. The lifting mechanism of claim 22, wherein, The other swing arm is provided with a matching concave portion facing the convex swing arm, and the matching concave portion is used to match the abutting convex portion.

24. The lifting mechanism of claim 23, wherein, The cross-sectional width of the abutting convex portion gradually decreases in the direction of the abutting convex portion facing the matching concave portion, and the cross-sectional width of the concave cavity of the matching concave portion gradually decreases.

25. The lifting mechanism of claim 23 or 24, wherein, The abutting convex portion has two side edges in the length direction of the swing arm body, and at least one of the side edges is arranged obliquely. The matching concave portion has an inner side wall arranged obliquely.

26. The lifting mechanism of any one of claims 22 to 25, wherein, The convex swing arm is hingedly installed on the fixed arm through a first connecting shaft, and the abutting convex portion is arranged adjacent to the first connecting shaft.

27. The lifting mechanism of any one of claims 22 to 26, wherein, The limit position of the horizontal arm includes a first upper limit position, and corresponding to the first upper limit position, the abutting convex portion is located on one side of the end of the fixed arm connected to the other swing arm to avoid the other swing arm.

28. The lifting mechanism of any one of claims 22 to 27, wherein, The abutting convex portion is integrally formed with the swing arm body.

29. The lifting mechanism of any one of claims 16 to 28, wherein, The projections of the two swing arms in a first vertical plane formed by the left-right direction and the up-down direction at least partially overlap. The limit position of the horizontal arm includes a first upper limit position, and corresponding to the first upper limit position, the two swing arms abut against each other to stop upward swinging.

30. The lifting mechanism of claim 29, wherein, Each of the swing arms has a straight edge segment arranged adjacent to the horizontal arm, and corresponding to the first upper limit position, the two swing arms abut against each other at least at the straight edge segments.

31. The lifting mechanism of claim 30, wherein, In a second vertical plane formed by the front-rear direction and the up-down direction, each of the swing arms has a first hinging center point hingedly installed on the fixed arm and a second hinging center point hingedly installed on the horizontal arm, and a straight line passing through the first hinging center point and the second hinging center point is defined as a center line. Opposite side edges of the straight edge segments of the two swing arms are arranged parallel to the center line.

32. The lifting mechanism of any of claims 16 to 31, wherein, The projections of the two swing arms in a first vertical plane formed by the left-right direction and the up-down direction are staggered, and the two swing arms include a first swing arm and a second swing arm, the first swing arm is connected to the fixed arm through a first hinging shaft, the second swing arm is connected to the fixed arm through a second hinging shaft, the first swing arm is connected to the horizontal arm through a third hinging shaft, and the second swing arm is connected to the horizontal arm through a fourth hinging shaft. The limit position of the horizontal arm includes a second upper limit position, and corresponding to the second upper limit position, the first hinging shaft, the second hinging shaft, the third hinging shaft and the fourth hinging shaft are arranged in line in a second vertical plane formed by the front-rear direction and the up-down direction.

33. The lift mechanism of any one of claims 16 to 32, wherein, The lifting mechanism further comprises a locking structure, the locking structure comprises a fixed portion movably mounted relative to the horizontal arm along the front-rear direction, and at least one of the two swing arms is a locking swing arm. During movement of the fixed portion relative to the horizontal arm along the front direction, the locking swing arm can stop downward swinging.

34. The lifting mechanism of claim 33, wherein, One of the fixed part and the locking swing arm is provided with a first sliding shaft, and the other is provided with a first matching sliding groove, the first matching sliding groove at least comprises a horizontal slot section extending in the front-back direction, the fixed part is movable in the front direction relative to the horizontal arm, the first sliding shaft is capable of sliding into the horizontal slot section in the rear direction, so that the locking swing arm swings downward.

35. The lifting mechanism of claim 34, wherein, The first matching sliding groove further comprises an arc-shaped slot section connected to the front side of the horizontal slot section, and the extension path of the arc-shaped slot section is adapted to the relative rotation of the fixed part and the locking swing arm.

36. The lifting mechanism of claim 35, wherein, The first matching sliding groove is provided on the fixed part, and an end of the arc-shaped slot section away from the horizontal slot section is provided through the lower end surface of the fixed part.

37. The lifting mechanism of claim 36, wherein, The side end of the locking swing arm away from the other swing arm is provided with a protruding arm part extending in the width direction of the locking swing arm, and the first sliding shaft is provided on the protruding arm part. On the center line of the first matching sliding groove, the arc-shaped vertex of the arc-shaped slot section is higher than the horizontal slot section.

38. The lifting mechanism of any one of claims 34 to 37, wherein, One of the fixed part and the locking swing arm is further provided with a second sliding shaft, and the other is further provided with a second matching sliding groove, and the second sliding shaft is slidingly installed in the second matching sliding groove.

39. The lifting mechanism of claim 38, wherein, The first sliding shaft and the second sliding shaft are both provided on the locking swing arm, and the first sliding shaft is located on the side of the second sliding shaft away from the fixed arm.

40. The lifting mechanism of claim 38 or 39, wherein, The second matching sliding groove is provided on the fixed part, and the second matching sliding groove is provided through the rear end surface of the fixed part in the rear direction.

41. A dishwasher, wherein, The dishwasher comprises the lifting mechanism according to any one of claims 16 to 40.

42. The warewash machine of claim 41, wherein, The dishwasher further comprises: a cabinet, a containing space is formed in the cabinet, the fixed arm of the lifting mechanism is arranged in the containing space; and a lower basket, a slide rail is connected to the lower end of the lower basket, and the slide rail comprises the horizontal arm of the lifting mechanism.

43. The warewash machine of claim 42, wherein, Two lifting mechanisms are provided and are arranged on the left and right sides of the lower basket.

44. A lock member for use in a lifting mechanism of a household appliance and arranged on a first shelf for cooperating with a swing arm of the lifting mechanism to limit relative movement between the swing arm and the first shelf when the swing arm swings the first shelf upwardly to a top lift limit position and the first shelf moves to a top locked position, wherein, The locking member comprises: a lock body, one side of the lock body in the left-right direction is a mounting side; at least one guide rail, the guide rail is arranged on the mounting side, and the guide rail has an arc-shaped section connected to the leading end of the guide rail, and the arc-shaped section is used to provide an arc-shaped sliding track for a sliding part on the swing arm; and a limiting structure, the limiting structure is arranged corresponding to the trailing end of the guide rail, and the limiting structure is used to limit the sliding part in the up-down and / or front-rear directions when the first shelf moves to the top locking position.

45. The locking element of claim 44, wherein, The guide rail comprises a first guide rail used to slidingly cooperate with a first sliding part of the swing arm, the arc-shaped section of the first guide rail is a first arc-shaped section, and the first arc-shaped section is arranged in a downwardly curved arc shape from the leading end to the trailing end of the first guide rail. The limiting structure comprises a first limiting part arranged corresponding to the trailing end of the first arc-shaped section, and the first limiting part is used to limit the first sliding part in the up-down direction.

46. The locking element of claim 45, wherein, The first guide rail is arranged as a first guide slot, the trailing end of the first guide slot penetrates through the lock body in the downward direction to form a lower end slot, and a stop surface is formed on the periphery of the lower end slot and at a rear position, and the stop surface forms the first limiting part.

47. The locking element of claim 46, wherein, The tail end of the first guide groove is arranged through the lower end of the lock body, and the lower end surface of the lock body forms the abutting surface.

48. The locking element of any one of claims 45 to 47, wherein, The first guide rail is a first guide rib. The first limiting portion includes a limiting boss arranged on the rear side of the tail end of the first guide rib.

49. The locking element of any one of claims 44 to 48, wherein, The guide rail includes a second guide rail arranged on the front side of the first guide rail and on the lower side of the first guide rail, and used for sliding cooperation with the second sliding portion of the swing arm. The second guide rail includes: a second arc-shaped segment arranged in an arc shape gradually upward from the head end to the tail end of the second guide rail, the arc-shaped segment of the second guide rail being the second arc-shaped segment; and a second flat segment having one end connected to the tail end of the second arc-shaped segment and the other end extending rearward; The limiting structure includes a second limiting portion arranged corresponding to the second flat segment, and the second limiting portion is used for limiting the second sliding portion forward and backward.

50. The locking element of claim 49, wherein, The second guide rail is a second guide groove. The second limiting portion is a limiting groove, and the limiting groove is in communication with the second flat segment and extends rearward, or the second flat segment constitutes the limiting groove.

51. The locking element of claim 50, wherein, The limiting groove is arranged in an inclined direction from front to rear and upward.

52. The locking element of claim 50 or 51, wherein, An included angle between the limiting groove and the front-rear direction is α, and 15°≤α≤60°.

53. The locking element of any one of claims 50 to 52, wherein, An inner side wall of the limiting groove is provided with a clamping rib at a connection position between the limiting groove and the second guide groove.

54. The locking element of any one of claims 50 to 53, wherein, A deformation groove is arranged on the periphery of the limiting groove on the mounting side of the lock body.

55. A lifting mechanism to lift a first shelf of a household appliance so that the first shelf can be switched between a bottom, rest position and a top, raised limit position, wherein, The lifting mechanism includes: a fixed arm arranged in the accommodating cavity of the household appliance; a swing arm assembly including at least a first swing arm, both ends of the first swing arm being provided with a first hinged mounting portion and a second hinged mounting portion, the first hinged mounting portion being arranged on the fixed arm, and the second hinged mounting portion being directly or indirectly arranged on the first shelf; and a locking member, the locking member being any one of the locking members in claims 44 to 54.

56. The lifting mechanism of claim 55, wherein, The lifting mechanism further includes a slide rail structure, the slide rail structure including multiple slide rails in telescopic sliding connection with each other, the multiple slide rails including at least a first slide rail and a tail slide rail, the first slide rail being directly or indirectly connected to the second hinged portion, and the tail slide rail being connected to the first shelf; The swing arm can swing the first shelf from a bottom standby lifting position forward and upward to a top lifting limit position, when the first shelf is in the top lifting limit position, the multiple slide rails are arranged in front and rear extension, and can relatively slide, so that the first shelf can slide to a top locking position.

57. The lifting mechanism of claim 56, wherein, The swing arm is provided with two, and the lifting mechanism further includes a connecting member connected to the first slide rail, and the second hinged mounting portions of the two swing arms are both hinged to the connecting member.

58. A household appliance, wherein, The household appliance includes: a shell formed with an accommodating cavity; a lifting mechanism including any one of the lifting mechanisms in claims 55 to 57, the fixed arm of the lifting mechanism being arranged on the side wall of the accommodating cavity; and a first shelf hingedly connected to the swing arm of the lifting mechanism. The lifting mechanism enables the first storage rack to be switched between a bottom, to-be-lifted position and a top, lifted limit position.

59. The household appliance of claim 58, wherein, A second storage rack is further arranged in the accommodating cavity, and the lower end of the first storage rack is higher than the lower end of the second storage rack at the top, lifted limit position.

60. The household appliance of claim 59, wherein, The household appliance comprises a dishwasher, the first storage rack is arranged as a lower basket, and the second storage rack comprises an upper basket.

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