CN114076486B

CN114076486B - Adjustable rack device and refrigerator with same

Info

Publication number: CN114076486B
Application number: CN202010839289.1A
Authority: CN
Inventors: 程学丽; 张振兴; 朱小兵
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2023-08-22
Anticipated expiration: 2040-08-19
Also published as: CN114076486A; CN116951883A; WO2022037549A1

Abstract

The invention discloses an adjustable rack device and a refrigerator with the same, wherein the adjustable rack device comprises a rack assembly and a slideway assembly, the rack assembly comprises a rack body and a bracket, the slideway assembly comprises a track groove, a sliding plate and at least two stop positions, a pulley is arranged on the sliding plate, a hook is arranged on one side of the bracket, which faces the track groove, the hook is matched with the pulley and can rotate along with the pulley by taking the central shaft of the pulley as a rotating shaft, an interference part matched with the pulley is arranged below the hook, the interference part is arranged as a two-section ramp, the two-section ramp is in smooth transition, an included angle is an obtuse angle, and the included angle is arranged towards the track groove and is of an opening structure. The adjustable rack can conveniently adjust the position of the rack device or disassemble the rack device by only lifting or pulling the rack body, and provides interference feedback in the process, so that specific position conditions are prompted, and the operation of a user is facilitated.

Description

Adjustable rack device and refrigerator with same

Technical Field

The invention relates to an adjustable rack device and a refrigerator with the same, in particular to a position-adjustable rack with a sliding rail and a refrigerator with the same.

Background

At present, in order to improve the internal volume rate of a refrigerator, a plurality of inner container ribs which are fixed in height and vertically arranged are generally arranged on the inner side of a main-stream refrigerator refrigerating chamber, and racks are arranged at heights corresponding to the inner container ribs, so that more foods are stored by utilizing each rack, but when the positions of the racks need to be adjusted, the rear mechanisms of the racks are often required to be released from buckles, the racks are pulled out along the inner container ribs and then are moved onto the corresponding inner container ribs, the rear mechanisms are pushed inwards to be buckled, so that the adjustment of the upper and lower positions of the racks is completed.

Disclosure of Invention

The invention aims to provide an adjustable rack device, which can solve the technical problems that the operation of the up-and-down movement process of a rack is complex, and the specific fastening position of a bracket is difficult to know.

One of the objects of the present invention is to provide a refrigerator with an adjustable rack device.

In order to achieve one of the above objects, an embodiment of the present invention provides an adjustable rack device,

including rack assembly and slide subassembly, the rack assembly includes shelf body and support, the slide subassembly include the track groove the rack assembly assemble in behind the slide subassembly, the track groove with the shelf body sets up perpendicularly, wherein, be equipped with two at least backstop positions and sliding plate in the track groove, two at least backstop positions are along track groove direction interval arrangement, the support with backstop position is fixed in a selectable spacing way, be equipped with the pulley on the sliding plate, the support is being equipped with the couple in orientation track groove one side, the couple with the pulley cooperation, by the pulley supports, and can be followed the pulley is together with the axis of pulley is the rotation axis, just the couple below be equipped with pulley complex interference portion, wherein, interference portion sets up to two segmentation ramps, and two segmentation ramps smooth transition and the contained angle of first segmentation ramp and second segmentation ramp are the obtuse angle, the contained angle orientation is the open structure is set up to in track groove direction.

As a further improvement of an embodiment of the invention, the bracket is provided with two hooks in the direction vertical to the shelf body, and two pulleys corresponding to the two hooks are arranged in the sliding plate.

As a further improvement of an embodiment of the present invention, at least two brackets are respectively fixed to both sides of the rack body, and at least two slide assemblies and pulleys are respectively matched with the brackets to assemble the rack assemblies.

As a further improvement of an embodiment of the invention, the pulley side is provided with a groove, and when the rack assembly and the slideway assembly are assembled and relatively stationary, the hook is matched with the groove, and the opening is clamped with the pulley downwards.

As a further improvement of an embodiment of the present invention, the pulley has two pulley end portions, the pulley end portions are connected by a pulley connecting portion, the pulley connecting portion is cylindrical, and the pulley end portions and the pulley connecting portion together form the groove.

As a further improvement of an embodiment of the invention, the two pulley ends of the pulley are in a round table shape, and the diameter of a cylinder of the pulley connecting part is smaller than the diameter of the round table of the pulley ends at the two sides.

As a further improvement of an embodiment of the invention, the bracket is provided with a first hook at the end part close to the shelf body in the direction vertical to the shelf body, a second hook is arranged at the position far away from the shelf body, the inner diameter of the bent part of the first hook is equal to the diameter of the pulley connecting part, the bent part of the second hook is a strip-shaped groove, the strip-shaped groove extends in the direction parallel to the track groove and has a larger size than the diameter of the pulley connecting part, and when the shelf component and the slideway component are assembled and relatively stationary, the surface of the pulley connecting part is contacted with the end surface of the strip-shaped groove close to the track groove.

As a further improvement of an embodiment of the invention, a first interference part and a first supporting part are arranged below the first hook, the first supporting part is a bulge with an inclined plane relative to the vertical direction, and the inclined plane and the first matching part on the stop position surface have a self-locking angle.

As a further improvement of an embodiment of the invention, a second interference part and a second supporting part of the L-shaped handle structure are arranged below the second hook, the second interference part and the second matching part are in limit fixation with the stop surface, and the second matching part is a groove matched with the upper end face and the lower end face of the L-shaped handle structure.

As a further improvement of one embodiment of the present invention, the stop position includes a guide portion that cooperates with the pulley, the guide portion is a curved arc surface, and the curved direction faces the rear back of the track groove.

To achieve one of the above objects, an embodiment of the present invention provides a refrigerator including storage compartments having different temperature areas, and a door for opening and closing the storage compartments, and further includes an adjustable rack device according to any one of the above aspects, the adjustable rack device being disposed in at least one storage compartment of the refrigerator.

Compared with the prior art, the adjustable rack device and the refrigerator with the same can easily realize the adjustment and disassembly actions of the position of the rack through the operations such as lifting, pushing and the like through the pulleys arranged in the refrigerator, and meanwhile, due to the interference part matched with the pulleys, a user can fully know the current state of the device in the process of adjusting the position of the rack, and the operation of the user is facilitated and the overall service life of the device is prolonged.

Drawings

FIG. 1 is a schematic view illustrating an installation of an adjustable shelf device of a refrigerator according to an embodiment of the present invention;

FIG. 2 is a schematic view of an adjustable rack assembly according to an embodiment of the present invention;

FIG. 3 is an exploded view of a slide assembly of an adjustable rack assembly according to an embodiment of the present invention;

FIG. 4 is a schematic view of a pulley wheel of an adjustable rack apparatus according to an embodiment of the present invention;

FIG. 5 is a schematic view of an assembly of a rack assembly and a slide plate of an adjustable rack apparatus according to an embodiment of the present invention;

FIG. 6 is a schematic view of an assembly of rack assemblies and pulleys of an adjustable rack apparatus according to an embodiment of the present invention;

FIG. 7 is a schematic view of an adjustable rack apparatus in a stationary state according to an embodiment of the present invention;

FIG. 8 is a schematic view of an adjustable rack apparatus according to an embodiment of the present invention in a moved state;

fig. 9 is a schematic view of an adjustable rack apparatus according to an embodiment of the present invention in a disassembled state.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the invention and structural, methodological, or functional modifications of these embodiments that may be made by one of ordinary skill in the art are included within the scope of the invention.

As shown in fig. 1, in an embodiment of the present invention, the adjustable rack device may be disposed in a refrigerator.

The refrigerator comprises a storage compartment with different temperature areas and a door body for opening and closing the storage compartment. Generally, a refrigerator is provided therein with a refrigerating chamber having a temperature higher than 0 degrees celsius and a freezing chamber having a temperature lower than 0 degrees celsius. The adjustable shelf device is disposed within at least one storage compartment of the refrigerator.

In this embodiment, the adjustable rack device is disposed in the refrigerating chamber to divide the storage space of the refrigerating chamber, so as to facilitate storage. Of course, in other embodiments, the adjustable rack device may also be disposed in the freezer compartment or the variable temperature chamber.

Taking the embodiment as an example of setting in a refrigerating chamber, the adjustable rack device comprises a rack component 1 and a slide component 2, wherein the slide component 2 is arranged at the back plate of the refrigerator body, and the rack component 1 is matched with the slide component 2 and can be arranged in the storage space of the refrigerating chamber in a height-adjustable way. The rack assembly 1 can be one or more, and the slideway assembly 2 can be one or more.

In the present embodiment, the slide rail assembly 2 is arranged in the vertical direction of the refrigerator, and the shelf body 11 of the rack assembly 1 is horizontally arranged when the rack assembly 1 is assembled to the slide rail assembly 2 and is stationary with respect to the slide rail assembly 2. When the back plate of the refrigerator body is arranged vertically, the shelf body 11 is arranged perpendicular to the back plate. In this way, the articles placed on the shelf body 11 can be made more stable.

In the present embodiment, the rack assembly 1 is movable on the slide assembly 2, i.e., vertically on the refrigerator compartment. The distance between the rack assemblies 1 and the top plate and the bottom plate of the refrigerator box body and the distance between the rack assemblies 1 and the top plate and the bottom plate of the refrigerator box body can be adjusted through movement so as to adapt to storing more articles with different heights.

As shown in fig. 2 and 3, in the present embodiment, the rack assembly 1 includes a rack body 11 and a bracket 12. The support 12 is more than two, is fixed in the shelf body 11 both sides respectively, and the slide subassembly 2 that cooperates with support 12 has the same quantity rather than. In the present embodiment, the brackets 12 are fixed to both sides of the shelf body 11, so that the balance of both sides of the shelf body 11 can be maintained during the adjustment of the up-down position of the rack assembly 1.

In the present embodiment, the slide assembly 2 includes a rail groove 21, a stopper 22, a slide plate 23, and a pulley 24.

When the refrigerator is assembled to the refrigerator, the track groove 21 is fixed on the back plate of the refrigerator compartment through the screw holes formed in the back surface, the lower end of the track groove 21 is preferably provided with the fixing block 212, the lower surface of the fixing block 212 is in surface contact with the upper surface part of the track groove 21, the upper screw holes correspond to the upper screw holes, the track groove 21 is arranged on the surface of the back plate, the fixing block 212 corresponds to the track groove 21, and the fixing block 212 and the track groove are fixed on the back plate of the refrigerator compartment together through screws, so that the integral structural strength is enhanced.

The stopper 22 and the sliding plate 23 are disposed inside the rail groove 21, and the sliding plate 23 is slidably connected to the rail groove 21. Further, a pulley 24 is fixed inside the slide plate 23.

Wherein, the track groove 21 is provided with at least two stop positions 22 at intervals along the vertical direction, and the degree of the compactness of the track groove can be controlled according to the application requirement of the adjustable rack device, so that the track groove and the bracket 12 can be selectively limited and fixed. In the present embodiment, the stopper 22 is disposed close to the rear surface of the rail groove 21. Of course, in other embodiments, the stop 22 may be disposed proximate the sides of the track slot 21.

As shown in fig. 3, in the present embodiment, when the track groove 21 is arranged in the vertical direction, the stop position 22 is disposed in the strip-shaped stop portion 220, and the strip-shaped stop portion 220 is disposed close to the rear surface in the track groove 21, so that the relative movement between the sliding plate 23 and the track groove 21 is not affected while the stop effect is maintained, and the detachment and replacement can be facilitated. Of course, other embodiments exist, such as the stop portion 220 is disposed close to two sides of the inside of the track groove 21, and the effect of stopping the bracket 12 can be achieved.

The lower end of the stop portion 220 is provided with a bracket, which can be fixed with the lower port of the track groove 21, so that the lower end of the track groove 21 is closed, and the function of limiting the sliding plate 23 in the track groove 21 is achieved. Further, slide rails 211 are disposed at both sides of the inside of the rail groove 21. Of course, in other embodiments, such as where the stop locations 22 are disposed on both sides of the interior of the track groove 21, the rail 211 may be secured to the rear face of the track groove 21.

In the present embodiment, the slide rail 211 includes an inner rail 211a and an outer rail 211b, and the inner rail 211a and the outer rail 211b are slidably connected by balls. The inner rail 211a is fixed to the slide plate 23, and the outer rail 211b is fixedly connected to the inner side wall of the rail groove 21.

The sliding plate 23 can drive the inner rail 211a to pass through the balls between the inner rail 211a and the outer rail 211b during the up-and-down movement process, and then move relative to the outer rail 211b and the fixed rail groove 21 thereof.

As shown in fig. 4 to 6, in the present embodiment, the sliding plate 23 is internally provided with a pulley 24 that is in snap connection with the hook 121 on the bracket 12, two ends of the pulley 24 are fixed in the groove of the sliding plate 23, the side surface of the pulley 24 is provided with a groove, when the rack assembly 1 and the slide assembly 2 are assembled and relatively stationary, the hook 121 is matched with the groove, the opening is downwards clamped to the pulley 24, and the pulley 24 provides an upward supporting force to the hook 121 after the clamping, thereby supporting the bracket 12.

Further, the pulley 24 can rotate with its central axis as a rotation axis, and when the rack assembly 1 and the slide assembly 2 are assembled and the rack assembly 1 and the track groove 21 move vertically, the cooperation structure of the pulley 24 and the hook 121 can provide a supporting force for the sliding plate 23 in the vertical direction.

As shown in fig. 4, the pulley structure includes pulley end portions 241 at both ends, and pulley connecting portions 242 connecting the pulley end portions 241, the pulley end portions 241 and the pulley connecting portions 242 are all circular in cross section, and the pulley connecting portions 242 are smaller in cross section radius than the pulley end portions 241, it is understood that the two pulley end portions 241 may not be uniform in shape and size, and any shape and size sufficient for the pulley end portions 241 and the pulley connecting portions 242 to form a groove capable of accommodating the bracket hooks 121 may achieve the desired technical effect. Of course, the pulley end portion 241 and the pulley connecting portion 242 may be integrally formed, and may be formed in a split type by a corresponding protrusion, a through hole, or the like, by a joggle, a snap, or the like.

In this embodiment, the whole pulley end 241 is round platform molding, and single pulley 24 is provided with two pulley ends 241, and round platform border adopts technologies such as chamfer cutting, so, when pulley 24 is fixed with couple 121 on the support 12, round platform side and chamfer form guide structure, can be more convenient with couple 121 and the fixed with the recess on the pulley 24. The lower surface of the round table is outwards, the two upper surfaces are opposite and are connected with the pulley connecting part 242, the pulley connecting part 242 is a cylinder with the bottom surface diameter smaller than that of the upper surface of the round table, the side surface of the cylinder and the upper surfaces of the round tables on the left side and the right side jointly form a groove, and the width of the groove, namely the height of the pulley connecting part 242 is equal to the thickness of the center of the hook 121 on the bracket 12, so that the hook 121 can be fixed with the pulley 24.

As shown in fig. 5 and 6, in this embodiment, when the sliding plate 23 is fixed in the vertical direction, two pulleys 24 are longitudinally disposed inside the sliding plate 23, after the sliding plate 23 is fixed to the bracket 12 by the pulleys 24, a first pulley 24a close to the supporting surface of the shelf body 11 is matched with a first hook 121a on the bracket 12, and a second pulley 24b far from the supporting surface 11 of the shelf body is matched with a second hook 121b on the bracket 12, so that the bracket 12 can rotate around the central axis of the first pulley 24a as a rotation axis, it is understood that the inner diameter of the hooked bent portion of the first hook 121a is equal to the diameter of the pulley connecting portion 242, and the hooked bent portion of the second hook 121b is a strip-shaped groove extending in the vertical direction and having a size larger than the diameter of the pulley connecting portion 242, so that the second pulley 24b can move in the horizontal direction inside the strip-shaped groove.

Further, when the rack assembly 1 and the slide assembly 2 are assembled and relatively stationary, the surface of the pulley connecting portion 242 contacts with the end surface of the strip-shaped groove far away from the track groove 21, and after the rack body 11 is lifted up and the rack assembly 2 rotates by a certain angle with the central axis of the first pulley 24a as the rotation axis, the pulley connecting portion 242 gradually moves from the end surface of the strip-shaped groove far away from the track groove 21 to the end surface of the strip-shaped groove near the track groove 21.

In this embodiment, the bracket 12 includes, in addition to the hook structure 121, an interference portion 122 located in a downward extending direction of the hook 121 and a supporting portion 123 connected to the interference portion 122, where the interference portion 122 is a two-stage ramp structure, the ramps smoothly transition, an included angle of the ramps is an obtuse angle, and the included angle is set to be an open structure toward the track groove 21, that is, a first stage of ramp 1221 is connected to the hook 121, extends in a direction away from the track groove 21 in a vertical direction, a second stage of ramp 1222 is connected to the supporting portion 123, and extends in a direction away from the shelf body 11 in a horizontal direction.

Further, the supporting portion 123 is engaged with a corresponding structure on the stop 22. The upper structure of the bracket 12 is integrally formed.

As shown in fig. 6, in order to cooperate with at least two pulleys 24 and at least two hooks 121 correspondingly disposed, in this embodiment, a first hook 121a is correspondingly provided with a first interference portion 122a and a first supporting portion 123a, and a second hook 121b is correspondingly provided with a second interference portion 122b and a second supporting portion 123b, where the inclination angles of the first section of ramp 1221 of the first interference portion 122a and the second interference portion 122b are the same, and the included angle between the two ramps of the second interference portion 122b is smaller than the included angle between the two ramps of the first interference portion 122a, so that stronger interference feedback can be provided without affecting the function of the supporting portion connected thereto, and meanwhile, an excellent guiding function is provided. Of course, the pulley 24 and the hooks 121, the interference portion 122, and the supporting portion 123 provided correspondingly thereto may be provided in three or more groups, and the configuration may be sufficient to enable the bracket to rotate about the center of the first pulley 24.

In this embodiment, the assembly of the rack assembly 1 is completed by the cooperation of the pulleys 24a and 24b inside the sliding plate 23 of the slideway assembly 2 and the hooks 121a and 121b on the bracket 12, and it can be understood that the track groove 21 is perpendicular to the shelf body 11 after the rack assembly 1 is assembled to the slideway assembly 2 and reaches a relatively stationary state. The shelf body 11 is fixedly arranged relative to the sliding plate 23 through the bracket 12, and the sliding plate 23 is slidably assembled on the track groove 21.

Referring to fig. 7, in the resting state of the adjustable rack device, the second supporting portion 123b is preferably an L-shaped handle structure, and is fixed and limited to the second engaging portion 22b in the stop portion 22 provided in the track groove 21, and the second engaging portion 22b is preferably a groove for engaging the upper and lower end surfaces of the L-shaped handle structure, and the cross section is L-shaped. Meanwhile, in the present embodiment, the interval between the stop positions 22 is set such that two sets of stop positions 22 are provided between the first support portion 123a and the second support portion 123b when the bracket 12 is fixed to the stop positions 22.

Further, the first supporting portion 123a is a protrusion, and the protrusion has a slope inclined with respect to the vertical direction, and the slope has a self-locking angle with the first mating portion 22a of the stop position 22, and the self-locking angle can provide a friction force for the rack assembly 1 in the non-bearing state so as not to generate a relative movement with the strip-shaped stop portion 220, and on the other hand, the mating structure can reduce the abrasion of the second supporting portion 123b and the second mating portion 22b in use to a certain extent.

In the resting state, the second matching portion 22b on the stop position 22 is limited and fixed with the second supporting portion 123b on the bracket 12, at this time, the second matching portion is in surface contact with the lower end surface of the second supporting portion 123b, meanwhile, the first supporting portion 123a is self-locked with the first matching portion 22a, when the supporting surface of the shelf body 11 bears weight, due to the lever principle, the first supporting portion 123a and the second supporting portion 123b respectively give the first matching portion 22a and the second matching portion 22b a horizontal pressure towards the inside of the stop position 22, correspondingly respectively obtain supporting forces with opposite directions provided by the first matching portion 22a and the second matching portion 22b, at this time, due to friction coefficients between the supporting portion 123 and the stop position 22, the friction force of the contact surface is increased, and therefore the whole structure of the adjustable shelf device is stable.

In the stationary state, if the rack body 11 is lifted up, the rack assembly 1 rotates by a certain angle with the central axis of the first pulley 24a as the rotation axis, and the adjustable rack device can be switched to the moving state, as shown in fig. 8.

At this time, the first supporting portion 123a is separated from the first engaging portion 22a, the second supporting portion 123b is separated from the second engaging portion 22b, and the self-locking and limiting structure is released, and after the separation, the second pulley 24b is locked to the second hook 121b at a side close to the track groove 21 from a side far from the track groove 21. Further, the shelf body 11 is lifted or pushed down in the vertical direction, and the slide plate 23 fixed to the bracket 12 can be moved up and down in the vertical direction.

It can be appreciated that, in the process of switching the adjustable rack device from the moving state to the stationary state again, due to the closed design of the slide assembly 2, it is difficult for a user to see the positional relationship between the first mating portion 22a and the second mating portion 22b in the internal stop position 22, and thus it is difficult to precisely limit the corresponding supporting portion 123, and therefore, the stop position 22 is further provided with a guiding portion 22c mated with the second supporting portion 123b, and the guiding portion 22c is located between the first mating portion 22a and the second mating portion 22 b. In this embodiment, the outer edge of the guiding portion 22c is an arc surface, and the whole body is bent towards the back of the track groove 21, that is, when the strip-shaped stop portion 220 is arranged along the vertical direction, the center of the arc is located at the inner side of the strip-shaped stop portion 220 and obliquely above the guiding portion 22 c; when the second supporting portion 123b contacts the first engaging portion 22a or the guiding portion 22c, the curved surface of the guiding portion 22c can enable the second supporting portion 123b to slide downward, so as to be limited and fixed with the second engaging portion 22b located below the guiding portion 22 c.

In this embodiment, when the adjustable rack is in a moving state, the user lifts the rack assembly 1 to move vertically upwards relative to the slide assembly 2, and at this time, the bracket 12 provides an upward supporting force for the pulley 24 located inside the bracket through the hook point of the hook 121, so as to drive the sliding plate 23 and the inner rail 211a of the sliding rail 211 fixed to the sliding plate to move upwards relative to the outer rail 211b of the sliding rail 211 and the rail groove 21. Similarly, when moving downwards, the user pushes or pulls the rack assembly 1 downwards, and at this time, the hook 121 hooks a downward supporting force to the pulley 24, so as to drive the sliding plate 23 and the inner rail 211a fixed thereon to move downwards relative to the outer rail 211b and the rail groove 21.

In the moving state, the edge of the rack body 11 near to the side of the track groove 21 is further lifted, so that the first hook 121a is separated from the first pulley 24a, and the second hook 121b is separated from the second pulley 24b, and at this time, the adjustable rack device is switched to the detached state, that is, as shown in fig. 9.

After the pulley 24 is disengaged from the hook 121, the rack assembly 1 is lifted continuously, the pulley 24 moves downwards relative to the bracket 12 and collides with the interference part 122 arranged below the hook 121, more specifically collides with the second ramp 1222 to form interference feedback, so that a user can know the position state of the pulley 24 and the bracket 12 at the moment, and the rack assembly 1 is pulled out along the horizontal direction, so that the rack assembly 1 and the slideway assembly 2 can be separated.

When withdrawn in the horizontal direction, the pulley 24 moves along the second ramp 1222 of the interference portion 122 relative to the bracket 12. It will be appreciated that, during the installation process, the pulley 24 is slid along the second ramp 1222 of the interference portion 122 relative to the bracket 12, toward the rack body 11, so that the supporting portion 123 can be sent into the slide assembly 2, and further, the pulley 24 collides with the interference portion 122 mechanically, more specifically, collides with the first ramp 1221 to form interference feedback, at this time, the rack assembly 1 is slowly lowered along the first ramp 1221, and finally the pulley 24 is fixed with the hook 121 in a limiting manner, i.e. the rack assembly 1 and the slide assembly 2 are installed.

It should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined as appropriate to form other embodiments that will be understood by those skilled in the art.

The above list of detailed descriptions is only specific to practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the spirit of the present invention should be included in the scope of the present invention.

Claims

1. An adjustable rack device comprises a rack component (1) and a slideway component (2),

the rack assembly (1) comprises a shelf body (11) and a bracket (12), the slideway assembly (2) comprises a track groove (21), after the rack assembly (1) is assembled on the slideway assembly (2), the track groove (21) is vertically arranged with the shelf body (11),

it is characterized in that at least two stop positions (22) and a sliding plate (23) are arranged in the track groove (21),

the at least two stop positions (22) are arranged at intervals along the direction of the track groove (21), the bracket (12) and the stop positions (22) are selectively limited and fixed,

the sliding plate (23) is provided with a pulley (24), one side of the bracket (12) facing the track groove (21) is provided with a hook (121), the hook (121) is matched with the pulley (24), is supported by the pulley (24) and can rotate along with the pulley (24) by taking the central axis of the pulley (24) as a rotating shaft, an interference part (122) matched with the pulley (24) is arranged below the hook (121),

the interference part (122) is arranged as a two-section ramp, the two-section ramp is in smooth transition, an included angle between the first section ramp (1221) and the second section ramp (1222) is an obtuse angle, and the included angle is arranged as an opening structure towards the track groove (21); in the lifting process of the rack assembly, the pulley is disengaged from the hook, and the pulley collides with the interference part to form interference feedback;

two hooks (121) are arranged on the bracket (12) in the direction perpendicular to the shelf body (11), and two pulleys (24) corresponding to the two hooks (121) are arranged in the sliding plate (23);

the pulley (24) is provided with two pulley end parts (241), and the pulley end parts (241) are connected through a pulley connecting part (242);

the rack comprises a rack body (11), a bracket (12) and a pulley connecting part (242), wherein the bracket is perpendicular to the rack body (11), a first hook (121 a) is arranged at the end part close to the rack body (11), a second hook (121 b) is arranged at one position far away from the rack body (11), the inner diameter of the hooking part of the first hook (121 a) is equal to the diameter of the pulley connecting part (242), the hooking part of the second hook (121 b) is a strip groove, the strip groove extends in the direction parallel to the track groove (21), the size of the strip groove is larger than the diameter of the pulley connecting part (242), and when the rack assembly (1) and the slideway assembly (2) are assembled and relatively stationary, the surface of the pulley connecting part (242) is contacted with the end surface of the strip groove far away from the track groove (21).

2. The adjustable rack arrangement according to claim 1, wherein at least two of said brackets (12) are fixed to both sides of said shelf body (11), respectively;

at least two slide assemblies (2) and pulleys (24) are respectively matched with the bracket (12) to assemble the rack assembly (1).

3. The adjustable rack device according to claim 1, wherein the pulley (24) is provided with a groove on the side, and the hook (121) is engaged with the groove and is clamped with the pulley (24) with the opening downward when the rack assembly (1) and the slide assembly (2) are assembled and relatively stationary.

4. An adjustable rack arrangement according to claim 3, wherein the pulley connection (242) is cylindrical, the pulley end (241) and the pulley connection (242) together forming the groove.

5. An adjustable rack arrangement according to claim 3, wherein the pulley (24) has two pulley ends (241) with a circular truncated cone shape, and the pulley connection (242) has a cylindrical diameter smaller than the circular truncated cone diameter of the pulley ends (241) on both sides.

6. The adjustable rack device according to claim 2, wherein a first interference portion (122 a) and a first supporting portion (123 a) are disposed below the first hook (121 a), the first supporting portion (123 a) is a protrusion having an inclined surface in a vertical direction, and the inclined surface has a self-locking angle with the first mating portion (22 a) on the surface of the stop position (22).

7. The adjustable rack device according to claim 2, wherein a second interference portion (122 b) and a second supporting portion (123 b) of the L-shaped handle structure are arranged below the second hook (121 b), the second interference portion and the second supporting portion are fixed in a limiting manner with a second matching portion (22 b) on the surface of the stop position (22), and the second matching portion (22 b) is a groove matched with the upper end face and the lower end face of the L-shaped handle structure.

8. The adjustable rack arrangement according to claim 1, wherein the stop (22) comprises a guide (22 c) cooperating with the pulley (24), the guide (22 c) being a curved surface, the direction of curvature being towards the rear face of the track groove (21).

9. A refrigerator comprising storage compartments of different temperature areas, and a door for opening and closing the storage compartments, characterized in that the refrigerator further comprises an adjustable rack device according to any one of claims 1-8, which is arranged in at least one storage compartment of the refrigerator.