Swing arm, lifting mechanism and household appliance

Abstract

The utility model discloses a swing arm, a lifting mechanism and a household appliance, which belong to household appliances, the swing arm is used in the lifting mechanism, the swing arm comprises a main body and an extension part, two ends of the main body are correspondingly provided with a first hinge mounting part and a second hinge mounting part, and the first hinge mounting part is used for being hinged to a fixed arm of the lifting mechanism; the second hinge mounting part is used for being directly or indirectly hinged to a first storage rack of the household appliance, the extension part is arranged at the end, provided with the first hinge mounting part, of the main body, a third hinge mounting part is arranged on the extension part, and the third hinge mounting part is used for being in hinge fit with a damping part of a lifting mechanism; wherein the included angle theta between the main body and the extending part is larger than or equal to 95 degrees and smaller than or equal to 180 degrees, and the distance L between the third hinge mounting part and the first hinge mounting part is larger than or equal to 20 mm and smaller than or equal to 170 mm. According to the swing arm provided by the utility model, the length of the damping part can be shorter, so that larger supporting force is provided, and the long-term reliability of the damping part is improved.

Description

[0001] The present application claims priority to the Chinese patent application No. 202410541707.7, filed on April 30, 2024, entitled "Lifting mechanism and dishwasher", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The utility model relates to the technical field of household appliances, especially to swing arm, lifting mechanism and household appliance. BACKGROUND

[0003] Some household appliances with double-layer shelves, such as dishwashers, ovens, etc., often lift the lower shelf when taking and placing objects, and then take and place objects after lifting, thereby reducing the user's bending angle and bending frequency and improving the user's experience.

[0004] In order to improve the user's experience during the lifting of the shelf, a lifting mechanism is generally provided, which includes a swing arm and a damping member. The damping member can be stretched and contracted by itself, thereby converting potential energy into kinetic energy during the lifting of the shelf, achieving the effect of saving labor.

[0005] In the existing scheme, when the shelf is in the uppermost position, the damping member elastically presses one end of the swing arm of the lifting mechanism, thereby providing a certain support to the shelf. However, the damping member of the current lifting mechanism provides a small support force, resulting in low long-term reliability. SUMMARY

[0006] The main purpose of the utility model is to provide a swing arm, a lifting mechanism and a household appliance, which aims to solve the problem of low long-term reliability of the damping member of the lifting mechanism of the existing household appliance.

[0007] To achieve the above-mentioned purpose, the utility model provides a swing arm used in the lifting mechanism of a household appliance, which comprises:

[0008] a main body, two ends of the main body are provided with a first hinged mounting part and a second hinged mounting part, the first hinged mounting part is used for being hinged to a fixed arm of the lifting mechanism, and the second hinged mounting part is used for being directly or indirectly hinged to a first shelf of the household appliance; and

[0009] an extension part provided at one end of the main body provided with the first hinged mounting part, and a third hinged mounting part is provided on the extension part, the third hinged mounting part is used for hinged cooperation with the damping member of the lifting mechanism;

[0010] wherein, the included angle between the main body and the extension part is θ, 95°≤θ≤180°.

[0011] The distance from the third hinged mounting portion to the first hinged mounting portion is L, 20mm≤L≤170mm.

[0012] In an embodiment, 95°≤θ≤165°; and / or, 20mm≤L≤100mm.

[0013] In an embodiment, θ≥136°; and / or,

[0014] θ≤145°; and / or,

[0015] 34mm≤L≤52mm.

[0016] In an embodiment, 20mm≤L≤70mm.

[0017] In an embodiment, the width of the extension portion is tapered in a direction away from the main body; and / or,

[0018] The main body and the extension portion are integrally arranged; and / or,

[0019] The third hinged mounting portion is arranged on the midline of the extension portion in the width direction; or,

[0020] The extension portion has a first side and a second side oppositely arranged along the width direction thereof, the first side of the extension portion is located outside the angle region of the main body and the extension portion, and the third hinged mounting portion is arranged between the midline of the extension portion in the width direction and the first side of the extension portion.

[0021] To achieve the above object, the present application further provides 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, the lifting mechanism comprising:

[0022] A fixed arm is arranged to be fixedly installed in a receiving cavity of a housing of the household appliance;

[0023] A swing arm assembly comprising at least one swing arm, the swing arm being as described in any one of the above embodiments; and,

[0024] A damping member having a fourth hinged mounting portion and a fifth hinged mounting portion oppositely arranged along the length direction thereof, the fourth hinged mounting portion being arranged to be hinged to the receiving cavity of the housing, and the fifth hinged mounting portion being arranged to be hinged to the third hinged mounting portion of the swing arm.

[0025] In an embodiment, the swing arm has an upper swing limit position and a lower swing limit position on the active stroke thereof;

[0026] when the swing arm is at the lower swing limit position, a line between the fourth hinged mounting portion and the first hinged mounting portion is a first line, a line between the third hinged mounting portion and the first hinged mounting portion is a second line, and an included angle between the first line and the second line is β, wherein 5°≤β≤20°; and / or,

[0027] when the swing arm is at the lower swing limit position, a line between the fourth hinged mounting portion and the first hinged mounting portion is a first line, and an included angle between the first line and a main body of the swing arm is α, wherein 90°≤α≤145°.

[0028] In an embodiment, 116°≤α≤140°.

[0029] In an embodiment, when the swing arm is at the upper swing limit position, an included angle between the damping member and the extension of the swing arm is x, wherein 80°≤x≤100°.

[0030] In an embodiment, x is 90°.

[0031] In an embodiment, the swing arm has an upper swing limit position and a lower swing limit position on its active stroke, and the swing arm is configured to support the shelf upwardly at the upper swing limit position.

[0032] The swing arm is upwardly inclined in a rear-to-front direction.

[0033] A line between the first hinged mounting portion and the second hinged mounting portion is a third line, and an included angle between the third line and a horizontal direction is c, wherein 0°<c≤70°.

[0034] In an embodiment, the damping member comprises a gas strut.

[0035] To achieve the above object, the present application further provides a household appliance, characterized in that it comprises:

[0036] a housing formed with a receiving cavity;

[0037] a lifting mechanism comprising any of the lifting mechanisms as described above, a fixed arm of the lifting mechanism being arranged on a side wall of the receiving cavity; and

[0038] a first shelf hingedly connected to a swing arm of the lifting mechanism.

[0039] The lifting mechanism is configured to switch the first shelf between a bottom standby lifting position and a top lifting limit position.

[0040] In one embodiment, a second shelf is provided in the receiving cavity, and corresponding to the top lifting limit position, the lower end of the first shelf extends upward beyond the lower end of the second shelf.

[0041] In one embodiment, the household appliance includes a dishwasher, and the first shelf is configured as a lower dish rack.

[0042] In the technical solution provided by this utility model, the included angle between the main body and the extension is greater than that between the main body and the extension of the existing swing arm. This allows the extension of the swing arm to be closer to the fourth hinge mounting part of the damper when the swing arm is at its upper swing limit position, resulting in a shorter damping part and thus providing greater support force, improving the long-term reliability of the damper. Furthermore, by setting the distance from the third hinge mounting part to the first hinge mounting part to 20mm-170mm, which is shorter than the length of the existing extension, the reduced length of the extension when the swing arm is at a position where the extension and the damper are collinear allows for a larger length of the damper, thereby reducing the maximum compression of the damper and ensuring its lifespan and long-term stability. Moreover, under the premise that other existing conditions remain unchanged, the length of the damper can also be reduced when the swing arm is at its upper swing limit position, thus providing greater support force. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0044] Figure 1 This is a schematic diagram of the structure of an embodiment of an existing lifting mechanism;

[0045] Figure 2 A three-dimensional structural schematic diagram of an embodiment of the household appliance provided by this utility model (the first shelf is located at the bottom storage position, and the swing arm of the lifting mechanism is located at the lower limit position);

[0046] Figure 3 for Figure 2 A schematic diagram of the main structure of a Chinese household appliance;

[0047] Figure 4 for Figure 2 A three-dimensional structural diagram including a lifting mechanism and a first shelf;

[0048] Figure 5 for Figure 2A three-dimensional structural diagram of the lifting mechanism;

[0049] Figure 6 for Figure 2 Schematic diagram of the installation structure of the intermediate damping component and the swing arm;

[0050] Figure 7 for Figure 2 A three-dimensional structural diagram of a household appliance (the first shelf is at the bottom and about to be lifted, and the swing arm of the lifting mechanism is at the lower limit position).

[0051] Figure 8 for Figure 7 A schematic diagram of the main structure of a Chinese household appliance;

[0052] Figure 9 for Figure 7 A three-dimensional structural diagram including a lifting mechanism and a first shelf;

[0053] Figure 10 for Figure 7 A three-dimensional structural diagram of the lifting mechanism;

[0054] Figure 11 for Figure 2 A three-dimensional structural diagram of a household appliance (the first shelf is at the top lifting limit position, and the swing arm of the lifting mechanism is at the upper swing limit position).

[0055] Figure 12 for Figure 11 A schematic diagram of the main structure of a Chinese household appliance;

[0056] Figure 13 for Figure 11 A three-dimensional structural diagram including a lifting mechanism and a first shelf;

[0057] Figure 14 for Figure 13 A magnified view of a section at point A in the middle;

[0058] Figure 15 for Figure 11 A three-dimensional structural diagram of the lifting mechanism;

[0059] Figure 16 for Figure 2 A three-dimensional structural diagram of a household appliance (with the first shelf in the top locked position and the swing arm of the lifting mechanism in the upper limit position).

[0060] Figure 17 for Figure 16 A schematic diagram of the main structure of a Chinese household appliance;

[0061] Figure 18 for Figure 16The schematic view of the three-dimensional structure of the lifting mechanism and the first storage rack in the container;

[0062] Figure 19 The Figure 18 The local enlarged view of B in the container;

[0063] Figure 20 The Figure 16 The schematic view of the three-dimensional structure of the lifting mechanism in the container;

[0064] Figure 21 The Figure 16 The schematic view of the mounting structure of the damping member and the swing arm in the container;

[0065] Figure 22 The schematic view of the state of the extension with different lengths and the damping member at the upper swing limit position;

[0066] Figure 23 The schematic view of the state of the extension with different lengths and the damping member at the upper swing limit position;

[0067] Figure 24 The schematic view of the state of the extension with different lengths and the damping member at the upper swing limit position.

[0068] Explanation of reference numerals:

[0069] 100, lifting mechanism; 1, fixed arm; 2, swing arm; 3, main body; 4, extension; 31, first hinged mounting portion; 32, second hinged mounting portion; 41, third hinged mounting portion; 6, damping member; 61, fourth hinged mounting portion; 62, fifth hinged mounting portion; 91, head section sliding rail; 92, tail section sliding rail;

[0070] 1000, household appliance; 200, shell; 201, accommodating cavity; 2012, side wall; 300, first storage rack; 400, second storage rack;

[0071] 2000, lifting mechanism; 2100, damping member; 2200, swing arm.

[0072] The implementation, functional features and advantages of the utility model will be further described with reference to the drawings in combination with the embodiments. DETAILED DESCRIPTION

[0073] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0074] It should be noted that if the embodiments of the utility model have directionality indication (such as up, down, left, right, front, back, etc.), the directionality indication is only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), if the specific posture changes, the directionality indication also changes accordingly.

[0075] In addition, if the embodiments of the utility model have descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions, for example, "A and / or B" includes A solution, or B solution, or A and B solution. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary technical personnel 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 and is not within the protection scope required by the utility model.

[0076] Please refer to Figure 1 At present, some household appliances with double-layer shelves, such as dishwashers, ovens, etc., when taking and placing objects, often lift the lower shelf, and then take and place objects after lifting, thereby reducing the bending angle and bending frequency of the user and improving the user experience;

[0077] In the process of lifting the shelf, in order to improve the user's experience in the process of lifting the shelf, a lifting mechanism 2000 is generally provided, the lifting mechanism 2000 includes a swing arm 2200 and a damping member 2100, the damping member 2100 can itself be telescopic, thereby converting potential energy into kinetic energy in the process of lifting the shelf, achieving the effect of saving labor;

[0078] In the existing scheme, when the shelf is in the upper swing limit position, the damping member 2100 elastically presses one end of the swing arm 2200 of the lifting mechanism, thereby supporting the shelf to a certain extent, and the current damping member provides smaller supporting force, resulting in lower long-term reliability of the damping member.

[0079] In order to solve the above problems, the utility model provides a swing arm 2, Figures 2-21 The utility model provides a swing arm 2.

[0080] Please refer to Figures 2-21The swing arm 2 is used in a lifting mechanism 100 of a household appliance 1000, the swing arm 2 comprises a main body 3 and an extension 4, two ends of the main body 3 are correspondingly provided with a first hinged mounting part 31 and a second hinged mounting part 32, the first hinged mounting part 31 is used for being hinged to a fixed arm 1 of the lifting mechanism 100, the second hinged mounting part 32 is used for being directly or indirectly hinged to a first shelf 300 of the household appliance 1000, the extension 4 is arranged at one end of the main body 3 provided with the first hinged mounting part 31, and the extension 4 is provided with a third hinged mounting part, the third hinged mounting part is used for hinged cooperation with a damping part 6 of the lifting mechanism 100, wherein the included angle between the main body 3 and the extension 4 is θ, 95°≤θ≤180°.

[0081] It should be noted that the swing arm 2 has an upper swing limit position and a lower swing limit position on the activity stroke, the upper swing limit position corresponds to a top lifting limit position of the first shelf 300, and the lower swing limit position corresponds to a bottom position to be lifted of the first shelf 300.

[0082] In the technical scheme, the included angle between the main body 3 and the extension 4 is larger than the included angle between the main body and the extension of the existing swing arm 2200, so that when the swing arm 2 is at the upper swing limit position, the extension 4 of the swing arm 2 can be closer to the fourth hinged mounting part 61 of the damping part 6, the length of the damping part is shorter, so as to provide greater support force, and the long-term reliability of the damping part 6 is improved. By setting the distance from the third hinged mounting part 41 to the first hinged mounting part 31 to be 20mm-170mm, which is smaller than the length of the existing extension, when the swing arm 2 is at the position where the extension 4 and the damping part 6 are collinear, the length of the extension 4 is reduced, so that the length of the damping part 6 is increased, thereby reducing the maximum compression amount of the damping part 6, ensuring the service life and long-term stability of the damping part 6, and under the premise that other conditions remain unchanged, for example, under the premise that the type of the damping part 6 is not changed, when the swing arm 2 is at the upper swing limit position, the length of the damping part 6 can also be reduced, so as to provide greater support force.

[0083] It can be understood that in the technical scheme, the included angle θ is increased and the distance L from the third hinged mounting part 41 to the first hinged mounting part 31 is reduced, compared with the scheme of increasing the included angle θ or reducing the distance L alone, the length of the damping part 6 at the upper swing limit position is smaller, and the support force provided is greater.

[0084] It needs to be explained that the specific implementation form of the household appliance 1000 is not limited, which can be a dishwasher, a refrigerator, an oven, etc., which is not limited here. The setting position of the third hinged mounting portion is not limited, which can be opened in the middle of the extension portion 4, or can be opened at one end of the extension portion 4 away from the main body 3. It can be understood that the distance between the third hinged mounting portion and the first hinged mounting portion 31 of the main body 3 is the force arm of the damping member 6 driving the main body 3, the greater the distance, the smaller the driving force of the damping member 6 driving the main body 3, therefore, in an embodiment, the third hinged mounting portion is opened at one end of the extension portion 4 away from the main body 3. Moreover, the specific implementation form of the third hinged mounting portion is not limited, which can be in the form of a rotating protrusion, or in the form of a rotating hole, etc., which is not limited here.

[0085] It needs to be explained that the specific implementation form of the damping member 6 is not limited, which can be a gas strut, a compression spring, etc., which is not limited here, which is always in a compressed state, thereby being able to output a pushing force outwardly. It can be understood that the shorter the length of the damping member 6, the greater the pushing force it can output. The damping member 6 has a fourth hinged mounting portion 61 and a fifth hinged mounting portion 62 arranged oppositely along the length direction thereof, the fourth hinged mounting portion 61 is used for being hinged into the accommodating cavity 201 of the housing 200, and the fifth hinged mounting portion 62 is hinged and matched with the third hinged mounting portion of the swing arm 2. It needs to be emphasized that the fourth hinged mounting portion 61 of the damping member 6 is fixed-point mounted, the position thereof in the accommodating cavity 201 will not change, specifically, it can be hinged on the inner wall of the accommodating cavity 201, or can be hinged on the fixed arm 1, which is not limited here. The existing angle between the main body and the extension portion of the swing arm 2200 is generally set to 90°. By increasing the angle between the main body 3 and the extension portion 4 of the swing arm 2, under the premise that the length of the extension portion 4 remains unchanged, when the swing arm 2 is in the uppermost limit position, the first hinged mounting portion 31 of the extension portion 4 of the swing arm 2 can be made closer to the third hinged mounting portion of the damping member 6, thereby making the length of the damping member 6 smaller, so that it can provide greater support force, and improve its long-term reliability.

[0086] Moreover, please refer to Figure 1 and Figure 21, the distance from the third hinged mounting part 41 to the first hinged mounting part 31 is generally 200mm, while in the present application, the distance from the third hinged mounting part 41 to the first hinged mounting part 31 is less than or equal to 170mm, correspondingly, in the position where the extension part 4 and the damping part 6 are collinear at the swing arm 2, under the premise of using the same damping part 6, the length of the damping part 6 can be at least 30mm longer than the length of the damping part 2100 of the existing lifting mechanism 2000, and in the collinear position, which is also generally the maximum compression position of the damping part 6, so that the maximum compression amount of the damping part 6 is reduced by at least 30mm, so that it is not excessively compressed, ensuring its service life and improving its long-term stability, and when the swing arm 2 is in the upper swing limit position, the length of the damping part 6 can be shorter than the length of the damping part 2100 of the existing lifting mechanism 2000, so that the compression amount of the damping part 6 is larger, so that it can provide greater support force, and can also improve the long-term reliability of the damping part 6 to some extent.

[0087] Please refer to Figure 22 , Figure 22 is a schematic view of the state of the extension part and the damping part of different lengths at the upper swing limit position, and when the distance from the third hinged mounting part 41 to the first hinged mounting part 31 is greater than 170mm, on the one hand, it will cause the length of the damping part 6 to be smaller and provide smaller support force at the upper swing limit position, and on the other hand, it will cause the compression amount of the damping part 6 to be too large at the collinear position, and the distance space between the first shelf 300 and the second shelf 400 is limited, resulting in that the stroke of the damping part 6 cannot be considered both the maximum stroke and the minimum stroke.

[0088] Moreover, the distance from the third hinged mounting part 41 to the first hinged mounting part 31 is the size of the force arm of the damping part 6 acting on the swing arm 2, so the distance cannot be too small, otherwise the support force output by the damping part 6 needs to be large, which is not conducive to the service life of the damping part 6, and L≥20mm, so that the damping part 6 does not need to output too large support force.

[0089] Of course, the angle θ between the main body 3 and the extension part 4 cannot be too large, when θ is greater than 180°, at this time, when θ is increased, the length of the damping part 6 may not necessarily be reduced, but may be increased, therefore, θ≤180°, so as to avoid that the angle between the main body 3 and the extension part 4 is too large, resulting in that the length of the damping part 6 is too long.

[0090] Further, the damping member 6 has a fourth hinged mounting portion 61 and a fifth hinged mounting portion 62 oppositely arranged along the length direction of the damping member 6, the fourth hinged mounting portion 61 is used for being hinged into the accommodating cavity 201 of the shell 200, and the fifth hinged mounting portion 62 is hinged with the third hinged mounting portion 41 of the swing arm 2, when the swing arm 2 is at the lower swing limit position, the third hinged mounting portion of the extension portion 4 is above the line between the fourth hinged mounting portion 61 and the first hinged mounting portion 31 of the damping member 6, so that during the lifting and lowering process, the swing arm 2 firstly overcomes the damping force of the damping member 6 to compress the damping member 6, when the third hinged mounting portion of the extension portion 4, the fourth hinged mounting portion 61 of the damping member 6 and the first hinged mounting portion 31 of the swing arm 2 are collinear, the length of the damping member 6 is the shortest, then the third hinged mounting portion of the extension portion 4 continues to move downward, during the movement of the third hinged mounting portion of the extension portion 4, the length of the damping member 6 becomes longer, the potential energy of the damping member 6 is converted into kinetic energy during the movement of the swing arm 2, and the labor-saving effect is achieved.

[0091] Regarding the range of θ, further relevant descriptions are as follows in combination with the embodiments of the utility model:

[0092] In an embodiment of the utility model, 95°≤θ≤165°. The reason for selecting "95°≤θ≤165°" is based on the following consideration for further optimization, and the specific analysis is as follows:

[0093] The damping member 6 has a fourth hinged mounting portion 61 and a fifth hinged mounting portion 62 oppositely arranged along the length direction of the damping member 6, the fourth hinged mounting portion 61 is used for being hinged into the accommodating cavity 201 of the shell 200, and the fifth hinged mounting portion 62 is hinged with the third hinged mounting portion 41 of the swing arm 2, when the swing arm 2 is at the lower swing limit position, the third hinged mounting portion of the extension portion 4 is above the line between the fourth hinged mounting portion 61 and the first hinged mounting portion 31 of the damping member 6, so that during the lifting and lowering process, the swing arm 2 firstly overcomes the damping force of the damping member 6 to compress the damping member 6, when the third hinged mounting portion of the extension portion 4, the fourth hinged mounting portion 61 of the damping member 6 and the first hinged mounting portion 31 of the swing arm 2 are collinear, the length of the damping member 6 is the shortest, then the third hinged mounting portion of the extension portion 4 continues to move downward, during the movement of the third hinged mounting portion of the extension portion 4, the length of the damping member 6 becomes longer, the potential energy of the damping member 6 is converted into kinetic energy during the movement of the swing arm 2, and the labor-saving effect is achieved.

[0094] As shown in the drawings, Figure 6 When the swing arm 2 is at the lower swing limit position, the line between the fourth hinged mounting portion 61 and the first hinged mounting portion 31 is within the range of angle θ, angle θ is divided into angle β and angle α, so θ=α+β, the line between the fourth hinged mounting portion 61 and the first hinged mounting portion 31 is the first line, the line between the third hinged mounting portion 41 and the first hinged mounting portion 31 is the second line, the included angle between the first line and the second line is β, the line between the fourth hinged mounting portion 61 of the damping member 6 and the first hinged mounting portion 31 is the first line, and the included angle between the first line and the main body 3 of the swing arm 2 is α.

[0095] Please refer to Figure 6When the swing arm 2 is at the lower limit position, the third hinge mounting portion 41 of the extension 4 is above the line between the fourth hinge mounting portion 61 of the damper 6 and the first hinge mounting portion 31, so that during the lifting of the shelf, the swing arm 2 first overcomes the damping force of the damper 6 to compress the damper 6, and when the third hinge mounting portion 41 of the extension 4, the fourth hinge mounting portion 61 of the damper 6, and the first hinge mounting portion 31 of the swing arm 2 are collinear, the length of the damper 6 is the shortest, then the third hinge mounting portion 41 of the extension 4 continues to move downward, and during the movement of the third hinge mounting portion 41 of the extension 4, the length of the damper 6 becomes longer, converting the potential energy of the damper 6 into kinetic energy during the movement of the swing arm 2, thereby saving effort.

[0096] It can be understood that the angle β determines the movement stroke of the swing arm 2 from the lower limit position to the position where the third hinge mounting portion 41, the fourth hinge mounting portion 61, and the first hinge mounting portion 31 are collinear, that is, the power-assisted stroke of the compression of the damper 6, and this stroke cannot be too short, otherwise, the first shelf 300 is too easy to be pulled out, and the user is prone to misoperation. Similarly, during this stroke, the user needs to overcome the damping force of the damper 6 to do work, and therefore, this stroke cannot be too long, otherwise, the user needs to do too much work to pull out the first shelf 300. Therefore, 5°≤β≤20°, β is greater than or equal to 5°, so as to avoid the stroke of overcoming the damping force of the damper 6 to do work being too short, and the user misoperates to pull out the first shelf 300, and β is less than or equal to 20°, so as to avoid the stroke of overcoming the damping force of the damper 6 to do work being too long, and the user experience is poor.

[0097] It should be noted that when the swing arm 2 is in the lower swing limit position, the main body 3 of the swing arm 2 is vertically downward, at this time, the angle α determines the mounting position of the fourth hinged mounting portion 61 of the damping member 6, if the angle α is less than 90°, at this time, the fourth hinged mounting portion 61 of the damping member 6 will be located below the first hinged mounting portion 31 of the swing arm 2, on the one hand, when the swing arm 2 is in the upper swing limit position, the length of the damping member 6 will be relatively long, the support force provided is limited, and the long-term reliability is not high, on the other hand, when the swing arm 2 is in the lower swing limit position, the damping member 6 is upwardly inclined, and the gravity will offset a certain thrust, and due to the limited space between the first shelf 300 and the second shelf 400, when the angle α is less than 90°, the damping member 6 will occupy more space downward, thereby making the swing arm 2 easy to interfere with the first shelf 300. Therefore, in further embodiments, α is greater than or equal to 90°, on the one hand, it ensures that the damping member 6 will not interfere with the movement of the first shelf 300, and on the other hand, it avoids the phenomenon that when the swing arm 2 is in the upper swing limit position, the length of the damping member 6 is relatively long, and the support force provided is limited.

[0098] And the angle α cannot be too large, if the angle α is too large, when the swing arm 2 is in the upper swing limit position, the mounting position of the fourth hinged mounting portion 61 of the damping member 6 will be very high, at this time, in order to make the damping member 6 not interfere with the second shelf 400, it is necessary to make the gap between the first shelf 300 and the second shelf 400 very large, thereby causing the overall size of the household appliance 1000 to be large, and when the overall size of the household appliance 1000 is not changed, the angle α should be less than or equal to 145°, thereby adapting to the up-down spacing between the first shelf 300 and the second shelf 400 of the household appliance 1000 on the market.

[0099] In summary, 5°≤β≤20°, 90°≤α≤145°, correspondingly, the value range of the angle θ combined by the angle α and the angle β is 95°-165°, therefore, when 95°≤θ≤165°, on the one hand, it can make the damping member 6 provide sufficient support force, and on the other hand, it avoids that the damping member 6 occupies too much space upward.

[0100] Further, please refer to Figure 1 and Figures 13-16 , Figures 22-24In an embodiment, when the first shelf 300 is at the uppermost limit position, the height of the first shelf 300 is higher than the height of the existing first shelf 300 at the uppermost limit position. Specifically, when the swing arm 2200 of the existing lifting mechanism 2000 is at the uppermost limit position, the main body of the swing arm 2200 is generally in a horizontal state. After the first shelf 300 is lifted, when the swing arm 2 is at the uppermost limit position, the main body 3 of the swing arm 2 is arranged in an inclined upward manner. At this time, if the existing swing arm 2200 is directly used, the distance between the extension of the swing arm 2200 and the fourth hinged mounting portion of the damping member 2200 will be greater than the length of the damping member 2100 in the horizontal state. Correspondingly, the length of the damping member 6 will also be pulled longer. At this time, the compression amount of the damping member 6 will be smaller, and the support force that can be provided will be limited.

[0101] Please refer to Figure 22 By Figure 22 It can be clearly seen that 20mm≤L≤100mm. At this time, L is less than or equal to 100mm, which is much smaller than the length of the extension of the existing swing arm 2200. When the swing arm 2 is at the uppermost limit position, the length of the damping member 6 can be made smaller, so that the compression amount is larger, and the support force that can be provided is more, thereby ensuring the effect of stopping the swing arm 2 from rotating downward when the swing arm 2 is at the uppermost limit position. Therefore, when 20mm≤L≤100mm, even if the first shelf 300 is lifted higher, the first shelf 300 can be better supported.

[0102] In the technical scheme of the embodiment, by setting 95°≤θ≤165° and 20mm≤L≤100mm, even if the first shelf 300 is lifted higher than the existing one, the first shelf 300 can be well supported, and the maximum compression amount of the damping member 6 at the collinear position can be reduced, thereby improving the service life of the damping member 6.

[0103] The movement track of the third hinged mounting portion 41 of the extension portion 4 is a circumferential swing with the first hinged mounting portion 31 as the center, thus, when tangential force is applied to the extension portion 4, the extension portion 4 can be better driven to rotate or stop rotating, thus, when the swing arm 2 is at the upper swing limit position, the damping member 6 stops the swing arm 2 by the force output by itself, correspondingly, the force of the damping member 6 on the extension portion 4 of the swing arm 2 is decomposed into two components, one of which is in the extension direction of the extension portion 4, and the other is perpendicular to the extension direction of the extension portion 4, and the size of the other component determines the acceleration of the extension portion 4, so as to realize the rotation or driving rotation of the extension portion 4, in order to better stop the swing arm 2, the included angle between the damping member 6 and the extension portion 4 of the swing arm 2 is x, wherein 80°≤x≤100°, so as to reduce the component in the extension direction of the extension portion 4. Preferably, x is 90°, at this time, the component in the extension direction of the extension portion 4 is 0, and the stopping effect is the best.

[0104] Please refer to Figures 22-24 , based on the above-mentioned embodiment of 95°≤θ≤165°, 20mm≤L≤100mm, in further embodiments, 20mm≤L≤70mm.

[0105] It can be understood that when 80°≤x≤100°, the force output by the damping member 6 can better stop or drive the rotation of the swing arm 2, so as to Figure 24 For example, from Figure 23 It can be seen that when θ is larger, in order to control x at 90°, L needs to be longer, that is, when θ takes the maximum value 165°, at this time, corresponding to 80°≤x≤100°, L needs to be set between 65mm and 70mm, and when θ takes the maximum value 95°, L needs to be set between 20mm and 28mm.

[0106] Therefore, in the present embodiment, by setting L to be greater than or equal to 20mm and less than or equal to 70mm, the value of x can be controlled between 80° and 100° when θ takes any value between 95° and 165°, so that the force output by the damping member 6 is used as much as possible to stop or drive the rotation of the extension portion 4.

[0107] Based on the above-mentioned embodiment of 95°≤θ≤165°, 20mm≤L≤100mm, the following refined embodiments are included but not limited to;

[0108] The first detailed embodiment: 95°≤θ<136°, for example, 95°, 100°, 110°, etc., at this time, when the swing arm 2 is at the upper swing limit position, the length of the damping member 6 is smaller than the length of the existing damping member, so that a greater supporting force can be provided.

[0109] At this time, the value range of the β angle can be kept unchanged, 5°≤β≤20°, so that the corresponding α value is between 90° and 120°, that is, 90°≤α<120°, compared with other detailed embodiments, the value range of α is smaller, and the space occupied by the damping member 6 is smaller.

[0110] Corresponding to the present embodiment, if X is to be controlled between 80° and 100°, L needs to be set between 20mm and 34mm, so that the force output by the damping member 6 can better stop or drive the swing arm 2 to rotate.

[0111] The second detailed embodiment: 165°≥θ≥136°, so that without changing the type of the damping member 6, even if the height of the first shelf 300 at the upper swing limit position is raised, the angle θ is greater than or equal to 136°, the length of the damping member 6 is shorter, sufficient supporting force is provided, and the first shelf 300 can be better supported.

[0112] Corresponding to the present embodiment, if X is to be controlled between 80° and 100°, L needs to be set between 34mm and 70mm, so that the force output by the damping member 6 can better stop or drive the swing arm 2 to rotate, at this time, compared with other detailed embodiments, when the swing arm 2 is at the upper swing limit position, the force arm is larger, and the damping member 6 is also compressed to be short enough, and the supporting effect on the first shelf 300 is good.

[0113] The third detailed embodiment: 145°<θ≤165°, for example, 146°, 150°, 155°, etc., corresponding to this time, when the swing arm 2 is at the upper swing limit position, the length of the damping member 6 is larger than the length of the existing damping member, so that a greater supporting force can be provided, and the first shelf 300 is stably supported.

[0114] Corresponding to the present embodiment, if X is to be controlled between 80° and 100°, L needs to be set between 48mm and 70mm, so that the force output by the damping member 6 can better stop or drive the swing arm 2 to rotate, at this time, compared with other detailed embodiments, when the swing arm 2 is at the upper swing limit position, the force arm is the largest, and the damping member 6 is also compressed to be the smallest, and the supporting effect on the first shelf 300 is good.

[0115] The fourth detailed embodiment: 95°≤θ≤145°, so as to avoid the damping member 6 occupying too much space upwardly, and avoid the swing arm 2 interfering with other components during upward swinging.

[0116] In the present embodiment, if X is to be controlled between 80° and 100°, L needs to be set between 20mm and 52mm, so that the force output by the damping member 6 can better stop or drive the swing arm 2 to rotate.

[0117] The fifth detailed embodiment: 136°≤θ≤145°, at this time, θ is much greater than 90°, when the swing arm 2 is at the upper limit position, the length of the damping member can be greatly reduced, so as to provide greater support force, and θ≤145° can avoid the damping member 6 occupying too much space upwardly, and avoid the swing arm 2 interfering with other components during upward swinging.

[0118] In the present embodiment, the angle θ includes the angle α and the angle β, when 136°≤θ≤145°, the value range of the angle β can remain unchanged, 5°≤β≤20°, so that the corresponding value of α is between 116° and 140°, that is, 116°≤α≤140°, when θ is 136°, β takes the maximum value, that is, 20°, corresponding to the minimum value of α is 116°, when θ is 145°, β takes the minimum value, that is, 5°, corresponding to the maximum value of α is 140°, when α is greater than or equal to 116°, it is much greater than 90°, so that the damping member 6 and the swing arm 2 do not occupy too much space downwardly at the lower limit position, and α is less than or equal to 140°, and also does not occupy too much space upwardly, so as to avoid the damping member 6 occupying too much space upwardly, and avoid the swing arm 2 interfering with other components during upward swinging.

[0119] It should be emphasized that the size of the moment of the tangential force is determined by both L and the length of the damping member 6, and is Figure 24 As can be seen from the formula, when θ takes different values, the size of the moment of the tangential force is different when X is 90°.

[0120] In the present embodiment, when 136°≤θ≤145°, L is set to be between 34mm and 52mm, the angle X can be controlled to be within the range of 90° to 100°, so that the force output by the damping member 6 can better stop or drive the swing arm 2 to rotate, and in the present embodiment, a greater tangential moment can be provided, and the support effect on the first shelf 300 is better.

[0121] In the fifth detailed embodiment, by setting 136°≤θ≤145°, 34mm≤L≤50mm, 5°≤β≤20°, 116°≤α≤140°, the working stroke of the damping member 6 and the size of the installation space occupied by the damping member 6 can be considered, and 34mm≤L≤50mm, which is much smaller than the length of the existing extension, can reduce the maximum compression amount of the damping member 6 at the collinear position, improve the service life, and provide a larger tangential torque when the swing arm 2 is at the upper limit position, which is better for supporting the first shelf 300. In the technical scheme of the embodiment, more aspects can be considered, and the comprehensive performance is optimal.

[0122] In addition, the width of the extension 4 can be constant or variable, which is not limited here. It can be understood that the larger the width of the end of the extension 4 connected to the main body 3, the better the stability of the connection with the main body 3, and the smaller the width of the first rotating part of the extension 4, the more concentrated the supporting force provided by the damping member 6, which can be better transmitted to the main body 3. Therefore, in a further embodiment, the width of the extension 4 is tapered in the direction away from the main body 3. In this way, in the technical scheme of the embodiment, the width of the part of the extension 4 connected to the main body 3 is the largest, and the connection stability is the best, and the width of the connection with the damping member 6 is smaller, which can make the pushing force transmitted by the damping member 6 more concentrated, and the width is gradually changed, which also improves the stability of the transmission.

[0123] The connection mode of the main body 3 and the extension 4 is not limited, and can be splicing, welding, etc. Of course, it can also be integrally arranged. Considering that the swing arm 2 as a whole is pivotally rotated along the connecting end of the main body 3, the extension 4 needs to transmit force to the main body 3, therefore, the main body 3 and the extension 4 should maintain a certain connection strength. In an embodiment, the main body 3 and the extension 4 are integrally arranged. In this way, on the one hand, the connection strength between the main body 3 and the extension 4 can be guaranteed, and on the other hand, the processing and manufacturing of the swing arm 2 are simpler.

[0124] In addition, the position of the third hinged mounting part in the width direction of the extension 4 is not limited. In an embodiment, the third hinged mounting part is arranged on the center line in the width direction of the extension 4. At this time, the connection position of the damping member 6 and the swing arm 2 is located on the center line in the width direction of the extension 4, and the rotation stability is the highest.

[0125] In other embodiments, the extension part 4 has a first side and a second side oppositely arranged along the width direction thereof, the first side of the extension part 4 is arranged to face away from the fixed arm 1 of the lifting mechanism 100 when mounted thereto, the third hinged mounting part is arranged between the middle line of the width direction of the extension part 4 and the first side of the extension part 4, in the technical solution of the present embodiment, the first hinged mounting part is arranged closer to the first side of the extension part 4 than to the second side of the extension part 4, at this time, the distance between the third hinged mounting part and the fourth hinged mounting part 61 of the damping member 6 is smaller, and the length of the damping member 6 can be smaller when the swing arm 2 is in the upper swing limit position, thereby being able to provide greater support force.

[0126] To achieve the above-mentioned object, the present application further 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 comprises a fixed arm 1, a swing arm 2 assembly and a damping member 6, the fixed arm 1 is arranged to be fixedly mounted in a receiving cavity 201 of a housing 200 of the household appliance 1000, the swing arm 2 assembly comprises at least one swing arm 2, the swing arm 2 is as any one of the above-mentioned swing arms 2; the damping member 6 has a fourth hinged mounting part 61 and a fifth hinged mounting part 62 oppositely arranged along the length direction thereof, the fourth hinged mounting part 61 is arranged to be hingedly connected to the receiving cavity 201 of the housing 200, and the fifth hinged mounting part 62 is hingedly connected to the third hinged mounting part of the swing arm 2.

[0127] In the technical scheme of the embodiment, the first shelf 300 has a bottom position to be lifted and a top position of lifting limit on its lifting stroke. When the first shelf 300 is at the bottom position to be lifted, a user pulls the first shelf 300 to start lifting, at this time, the follow-up end of the swing arm 2 moves upward following the first shelf 300, the swing arm 2 rotates around the first hinged mounting part 31, at this time, since the second hinged mounting part 32 and the third hinged mounting part are separately arranged on the two sides of the first hinged mounting part 31, during the upward movement of the second hinged mounting part 32 following the first shelf 300, the third hinged mounting part moves downward, thereby driving the fifth hinged mounting part 62 of the damping member 6 to move downward, during the downward movement of the fifth hinged mounting part 62 of the damping member 6, the damping member 6 rotates around the fourth hinged mounting part 61, the length of the damping member 6 first decreases, when the first hinged mounting part 31, the third hinged mounting part and the fourth hinged mounting part 61 are collinear, the length of the damping member 6 reaches the minimum, then the fifth hinged mounting part 62 of the damping member 6 continues to move downward, the length of the damping member 6 increases, the potential energy of the damping member 6 is converted into the kinetic energy of the swing arm 2, thereby playing a role of saving labor during the lifting of the first shelf 300.

[0128] When the first shelf 300 is lifted to the top position of lifting limit, the included angle between the main body and the extension part of the existing swing arm 2200 is small, which can cause the length of the damping member 6 to be long, thereby causing the damping member 6 to provide a small supporting force, and the long-term stability of the damping member 6 is poor. In the embodiment, the included angle between the main body 3 and the extension part 4 is greater than that between the main body and the extension part of the existing swing arm 2200, thereby causing the extension part 4 of the swing arm 2 to be closer to the fourth hinged mounting part 61 of the damping member 6 when the swing arm 2 is at the upper limit position, the length of the damping part is shorter, thereby providing a greater supporting force, and the long-term reliability of the damping member 6 is improved.

[0129] It should be noted that the specific composition form of the swing arm 2 assembly is not limited, which can be only one swing arm 2, or can include one swing arm 2, one connecting rod and a connecting arm, the two ends of the swing arm 2 and the connecting rod are respectively hinged to the connecting arm and the fixed arm 1, the connecting arm is used for mounting the first shelf 300 of the household appliance 1000, the swing arm 2, the connecting rod, the fixed arm 1 and the connecting arm can constitute a parallelogram, thereby causing the first shelf 300 to always keep an approximately horizontal state during lifting, avoiding the first shelf 300 from shaking during lifting.

[0130] The adjustment of the angle x can be achieved by adjusting the size of the angle θ, and it can be understood that, under the condition that the length of the extension part 4 is constant, the larger the angle θ is, the shorter the length of the damping part 6 is, in the triangle formed by the first hinged mounting part 31, the third hinged mounting part and the fourth hinged mounting part 61, the distance between the first hinged mounting part 31 and the third hinged mounting part is constant, and the distance between the first hinged mounting part 31 and the fourth hinged mounting part 61 is also constant, that is, the lengths of two sides of the triangle are constant, and the length of one side is reduced, at this time, the angle of the corresponding angle of the reduced side will increase, and the angle of the angle x will increase, therefore, by adjusting the size of the angle θ, the size of the angle x can be adjusted to a certain extent, so as to be adjusted to the range of 80°-100°, of course, it can also be adjusted by adjusting the length of the extension part 4, or first adjusting the size of the angle θ, and then adjusting the length of the extension part 4, etc., in the technical scheme of the embodiment, by controlling θ in the range of 136°-145° and controlling the length L in the range of 34mm-52mm, the size of the angle x can be controlled in the range of 80°-100°, and larger tangential moment and installation space of the damping part 6 can be provided.

[0131] The household appliance 1000 can be a dishwasher, an oven, an oven, a refrigerator and the like. The household appliance 1000 comprises a shell 200, a containing cavity 201 is formed in the shell 200, a first shelf 300 is connected in the containing cavity 201 through a lifting mechanism 100, and utensils to be placed, such as bowls, dishes, plates, chopsticks, knives and forks, and the like, baked food or refrigerated articles and the like are arranged on the first shelf 300.

[0132] In the utility model, the user is taken as the reference direction, forward means the direction towards the user, or the side of the household appliance 1000 provided with the door body, and backward means the direction opposite to the forward direction, specifically, the direction away from the user, and the up-down direction means the direction taken the gravity as the reference.

[0133] It should be noted that in some household appliances 1000, only one shelf is provided, such as the first shelf 300. A plurality of shelves can also be provided, and in the embodiment of the household appliance 1000 provided with a plurality of shelves, two shelves can be provided, such as the first shelf 300 and the second shelf 400. When the two shelves have a positional relationship in the up-down direction, they can be referred to as the upper shelf and the lower shelf, and in the description of the embodiment of the utility model, the first shelf 300 corresponds to the upper shelf, and the second shelf 400 corresponds to the lower shelf.

[0134] For the first shelf 300, it is necessary to move the first shelf 300 out of the accommodating cavity 201 of the household appliance 1000, and then lift it to the appropriate position, and finally lock it to the appropriate 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 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.

[0135] The first shelf 300 has several important positions during its movement. Commonly, there are a bottom storage position (as shown in the accompanying drawings), a bottom to be lifted position (as shown in the accompanying drawings), a top lifting limit position (as shown in the accompanying drawings), and a top locking position (as shown in the accompanying drawings). Figures 2-6 Figures 7-10 Figures 11-15 Figures 16-21

[0136] In some embodiments, the first shelf 300 can only have two positions, a bottom to be lifted position and a top lifting limit position. The first shelf 300 can also have three positions, a bottom storage position, a bottom to be lifted position, and a top lifting limit position. At this time, the top lifting limit position and the top locking position of the first shelf 300 can be the same position. The first shelf 300 can also have four positions, a bottom storage position, a bottom to be lifted position, a top lifting limit position, and a top locking position. At this time, the top lifting limit position and the top locking position of the first shelf 300 are different positions.

[0137] For the lifting mechanism 100, the lifting mechanism 100 mainly realizes the lifting of the first shelf 300. The action of the lifting mechanism 100 can only correspond to the bottom to be lifted position and the top lifting limit position of the first shelf 300.

[0138] In the existing scheme, when the swing arm 2200 is in the upper swing limit position, it will maintain a horizontal state with the fixed wall. At this time, the height of the corresponding first shelf 300 in the top lifting limit position is low, and the user still needs to bend frequently during use, which is poor user experience.

[0139] In some embodiments, at the upper swing limit position, the swing arm 2 is used to support the shelf upward. In the direction from back to front, the swing arm 2 is upwardly inclined.

[0140] ​​​​In the technical scheme of the embodiment, the first shelf 300 is lifted by swinging of the swing arm 2, so that the shelf can be lifted to the top lifting limit position, at which the swing arm 2 is arranged to support the first shelf 300 upwardly, and in the rear-to-front direction, the swing arm 2 is arranged to tilt upwardly, compared with swinging of the swing arm 2 to the horizontal direction, the swing arm 2 can swing through a larger angle, so that the first shelf 300 can be lifted to a larger height, reducing the user's frequent bending in operation, and improving the user experience.

[0141] Without being limited to the upper swing limit position, the included angle of the swing arm 2 with respect to the horizontal direction corresponds to the included angle between the first connecting line and the horizontal direction at the upper swing limit position, and the included angle c is greater than 0° and less than or equal to 70°, the larger the included angle, the greater the lifting height of the first shelf 300, considering that the swing arm 2 needs to cooperate with other structures to achieve lifting, and considering some interference factors and the structural strength of the swing arm 2, the maximum angle of the included angle is set to 70°, which is a reasonable value.

[0142] It should be noted that the included angle can be an integer value of 70°, or any integer value between 0° and 70°, such as 10°, 20°, 30°, 40°, 50°, 60°, etc., of course, it can also be an angle value between any two of the above integer values, such as the degrees between 0° and 10° can be 1°, 2°, 3°, 4°, 5°, 6°, 7°, 8°, 9°, etc., it can also be degrees between 10° and 20°, degrees between 20° and 30°, degrees between 30° and 40°, degrees between 40° and 50°, degrees between 50° and 60°, of course, it can also be some decimal degree values, the above values are within the protection scope of the utility model.

[0143] It should be noted that, after lifting the first shelf 300, when the swing arm 2 is at the upper swing limit position, the main body 3 of the swing arm 2 is arranged to tilt upwardly, at this time, if the existing swing arm 2200 is directly used, the length of the damping member 6 will be lengthened, thereby causing the compression amount of the damping member 6 to be smaller, and the support force provided by the damping member 6 to be smaller, therefore, the size of L needs to be adjusted to further reduce the length of the damping member 6 at the upper swing limit position.

[0144] Correspondingly, 20mm≤L≤100mm, at this time, L is less than or equal to 100mm, so it is much smaller than the length of the extension part 4 of the existing swing arm 2200, when the swing arm 2 is in the upper swing limit position, the length of the damping part 6 can be made smaller, so that the compression amount is larger, and more support force can be provided, thereby ensuring the effect of stopping the swing arm 2 from rotating downward at the upper swing limit position.

[0145] In some embodiments, the lifting mechanism 100 further comprises a first guide rail, the first guide rail comprises a plurality of slide rails connected to each other in an extendable and retractable manner, and the plurality of slide rails at least comprises a first slide rail 91 and a last slide rail 92, the first slide rail 91 is connected to a connecting piece, the second hinged mounting part 32 is connected to the connecting piece, and the last slide rail 92 is used to connect the first shelf 300 of the household appliance 1000, so that the first shelf 300 can be switched between the bottom storage position and the bottom lifting position, and through the extension and retraction of the first guide rail, the positional relationship of the first shelf 300 relative to the connecting piece can be adjusted, so that the first shelf 300 can be moved to the bottom storage position and stored in the accommodating cavity 201.

[0146] The first guide rail is provided as a plurality of slide rails, and the number of slide rails is not limited in the technical scheme of the utility model, for example, it can be two slide rails, for the two slide rails, the first one is the first slide rail 91, and the second one is the last slide rail 92; it can also be three slide rails, for the three slide rails, the first one is the first slide rail 91, the second one is a middle slide rail, and the third one is the last slide rail 92; it can also be more than three slide rails, for more than three slide rails, the first one is the first slide rail 91, the last one is the last slide rail 92, and the middle ones between the first slide rail 91 and the last slide rail 92 are all middle slide rails, and the number of slide rails can be four, five, six, seven, etc.

[0147] To achieve the above-mentioned purpose, the application further 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 lifting mechanism 100 comprises any one of the lifting mechanisms 100 described above, and the fixed arm 1 of the lifting mechanism 100 is arranged on the side wall 2012 of the accommodating cavity 201; the first shelf 300 is hingedly connected to the swing arm 2 of the lifting mechanism 100; and the lifting mechanism 100 enables the first shelf 300 to be switched between the bottom lifting position and the top lifting limit position.

[0148] In some household appliances 1000, the shelves are provided with only one, two or more. In the technical scheme of the utility model, a second shelf 400 is further arranged in the accommodating cavity 201. Corresponding to the top lifting limit position, the lower end of the first shelf 300 protrudes upward from the lower end of the second shelf 400, that is, at the lifting limit position of the first shelf 300, the lifting height of the first shelf 300 is higher than that of the second shelf 400. At this time, the lifting height is larger, the frequency of bending over of the user is reduced, and the user experience is improved.

[0149] It should be noted that in the embodiment in which two shelves are arranged 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 is arranged oppositely.

[0150] In view of the above-mentioned embodiments, the user needs to alternately use the first shelf 300 and the second shelf 400, that is, 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.

[0151] 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 upward from the upper end of the second shelf 400, that is, under the premise that the depths of the first shelf 300 and the second shelf 400 are consistent, the first shelf 300 can be arranged at a higher position.

[0152] Corresponding to the product in which the household appliance 1000 is 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. This state has the same operation height as when the user uses the upper basket of the dishwasher, or a higher height, and the user's operation experience is better.

[0153] The following describes the process of using the household appliance 1000 by the related structure of the household appliance 1000, taking the first shelf 300 as the reference:

[0154] 1. The first shelf 300 is in the bottom storage position, as shown in Figures 2-6

[0155] This state is the state when the user does not use or just starts to use or finishes to use, in which the first shelf 300 is in the containing cavity 201 of the household appliance 1000, as shown in Figures 2-6 It can be seen that the first shelf 300 is stored in the containing cavity 201, and the distance between the first guide rail head rail 91 and the tail rail 92 is the smallest or the largest, and the swing arm 2 is in the lower limit position.

[0156] 2. The first shelf 300 is in the bottom storage position, as shown in Figures 7-10

[0157] This state is the state when the user does not use or just starts to use or finishes to use, in which the first shelf 300 is in the containing cavity 201 of the household appliance 1000, as shown in Figures 7-10 It can be seen that the first shelf 300 is stored in the containing cavity 201, and the distance between the first guide rail head rail 91 and the tail rail 92 is the smallest or the largest, and the swing arm 2 is in the lower limit position.

[0158] 3. The first shelf 300 is in the bottom storage position, as shown in Figures 11-15

[0159] This state is the state when the user does not use or just starts to use or finishes to use, in which the first shelf 300 is in the containing cavity 201 of the household appliance 1000, as shown in Figures 11-15 It can be seen that the first shelf 300 is stored in the containing cavity 201, and the distance between the first guide rail head rail 91 and the tail rail 92 is the smallest or the largest, and the swing arm 2 is in the lower limit position.

[0160] 4. The first shelf 300 is in the bottom storage position, as shown in Figures 16-21

[0161] This state is the state when the user does not use or just starts to use or finishes to use, in which the first shelf 300 is in the containing cavity 201 of the household appliance 1000, as shown in​​​​Figures 16-21 It can be seen that the distance between the head section sliding rail 91 and the tail section sliding rail 92 of the first guide rail is maximum or the distance of coincidence is minimum at this time, the first shelf 300 is moved forward a distance relative to the top lifting limit position at the top locking position, and the swing arm 2 is still at the upper swing limit position.

[0162] The following will be introduced by a complete use process of a user:

[0163] When the user needs to use the household appliance 1000, first open the door body of the household appliance 1000, the user pulls the first shelf 300 out of the containing cavity 201 to the bottom waiting 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 waiting 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 to-be-shelved articles in the first shelf 300 under the condition of reducing the frequency of bending over;

[0164] When the user finishes taking and placing the to-be-shelved articles, the user pushes the first shelf 300 backward to unlock the first shelf 300 and move the first shelf 300 from the top unlocking position to the top lifting limit position; the user lowers the first shelf 300 to move the first shelf 300 from the top lifting limit position to the bottom waiting lifting position; the user continues to push the first shelf 300 backward to move the first shelf 300 from the bottom waiting lifting position to the bottom storage position, when the first shelf 300 is at the bottom storage position, the user can close the door body to complete the use of the household appliance 1000.

[0165] The above only describes the preferred embodiments of the present application, and does not limit the patent range of the present application, any equivalent structural transformation made under the utility model concept of the present application, or direct / indirect application in other related technical fields is included in the patent protection range of the present application.

Claims

1. A swing arm for use in a lifting mechanism of a domestic appliance, characterized in that The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly.

2. The swing arm of claim 1, wherein The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly.

3. The swing arm of claim 2, wherein, The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly.

4. The swing arm of claim 2, wherein, The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly.

5. The swing arm of claim 1, wherein, The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly.

6. A lifting mechanism for lifting a first shelf of a household appliance to enable the first shelf to be switched between a bottom, rest position and a top, raised limit position, characterised in that, The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly.

7. The lifting mechanism of claim 6, wherein, The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly.

8. The lifting mechanism of claim 7, wherein, 116°≤α≤140°。 9. The lifting mechanism of claim 7, wherein, The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly.

10. The lifting mechanism of claim 6, wherein, The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm assembly. The utility model relates to a household appliance, and particularly to a household appliance with a lifting mechanism and a swing arm A third connecting line is formed between the center of the first hinged mounting part and the center of the second hinged mounting part, the included angle between the third connecting line and the horizontal direction is c, and 0° < c ≤ 70°.

11. The lifting mechanism of claim 6, wherein, The damping member comprises an air spring.

12. A household appliance characterized in that, Comprise: A housing is formed with a receiving cavity; A lifting mechanism comprising any one of claims 6 to 11, the fixed arm of the lifting mechanism is arranged 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 waiting lifting position and a top lifting limit position.

13. The household appliance according to claim 12, characterized by A second shelf is also arranged in the receiving cavity, corresponding to the top lifting limit position, the lower end of the first shelf is arranged to protrude upward beyond the lower end of the second shelf.

14. The household appliance according to claim 13, characterized by The household appliance comprises a dishwasher, the first shelf is arranged as a lower basket, and the first shelf is arranged as an upper basket.

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