A shelf and refrigerator

Abstract

This application provides a shelf and a refrigerator, relating to the field of refrigerator technology. The shelf is applied to a refrigerator, which has a liner. Air duct components are embedded in the inner walls of both sides of the liner. The shelf is connected to two of the air duct components on both sides. The shelf includes a shelf unit and connecting parts. The shelf fixing structure provided in this application is integrated inside the air duct components, reducing the space occupied inside the refrigerator. The side wall air duct components eliminate the back air duct, reducing the thickness of the back of the cabinet and increasing the usable depth of the storage space. The side wall air duct components increase the thickness of the side walls of the cabinet and eliminate the block fixed to the side wall of the liner, thus meeting the need for drawer pull-out when the door is opened at 90°.

Description

Technical Field

[0001] This application relates to the field of refrigerator technology, and more particularly to a shelf and a refrigerator. Background Technology

[0002] Most existing air-cooled refrigerators have the air duct assembly located at the back of the refrigerator liner, while the air outlet is located on the front or sides of the air duct assembly. This design is highly modular and easy to assemble.

[0003] To enhance storage convenience and enable layered storage of food, most modern refrigerators incorporate shelves within the cabinet. Two common shelf structures are side-wall shelves and cantilever shelves. Side-wall shelves utilize symmetrically arranged raised ribs on the inner wall of the refrigerator liner to support the shelves, resulting in a simple structure and easy assembly. Cantilever shelves, on the other hand, are supported by a cantilever structure on the rear wall of the liner, eliminating the need for ribs on the side walls and creating a clean, minimalist appearance.

[0004] Existing air-cooled refrigerators have shelves that take up a lot of internal storage space, affecting user experience. Summary of the Invention

[0005] This application provides a shelf and a refrigerator. The shelf fixing structure is integrated inside the air duct assembly, which reduces the space occupied inside the refrigerator and solves the problem that the shelf occupies too much internal storage space in existing air-cooled refrigerators, affecting user use.

[0006] In a first aspect, embodiments of this application provide a shelf applied to a refrigerator, the refrigerator having a liner, both inner walls of the liner having embedded air duct components, both sides of the shelf being connected to two of the air duct components respectively, the shelf including a shelf and connecting parts;

[0007] The shelf is a pin shelf, and multiple support rods are provided on both sides of the shelf;

[0008] The connector is disposed inside the air duct assembly, and the air duct assembly is provided with multiple through holes, each of which corresponds to one of the multiple fulcrum rods.

[0009] The support rod of the shelf passes through the corresponding through hole and is connected to the connector.

[0010] In one feasible implementation, the shelf is a fixed shelf, the connector is a fixed support, and the through hole is a square through hole;

[0011] The fixed support is fixed inside the air duct assembly;

[0012] The fulcrum rod of the fixed shelf passes through the corresponding square through hole and is connected to the fixed support member.

[0013] In one feasible implementation, the shelf is an adjustable shelf, the connector is a lifting and adjusting assembly, and the through hole is an L-shaped through hole;

[0014] The lifting and adjusting component is fixed inside the air duct component;

[0015] The fulcrum rod of the adjustable shelf passes through the corresponding L-shaped through hole and is connected to the lifting and adjusting assembly.

[0016] In one feasible implementation, the lifting adjustment component includes a sliding adjustment component;

[0017] The sliding adjustment assembly includes a first sliding member and a first fixing member;

[0018] The first sliding member is slidably connected to the first fixing member, and the first fixing member is fixedly connected to the air duct assembly;

[0019] The first fixing member has a flange on its side, and the flange has multiple shelf adjustment holes on its front side. The first sliding member has a second fulcrum hole on its front side. The shelf fulcrum rod passes through the L-shaped through hole and the second fulcrum hole and connects to the adjustment hole.

[0020] In one feasible implementation, a roller is provided at the rear of the first sliding member, a first limiting groove is provided around the roller, and limiting buckles are provided on the front and rear sides of the outer side of the first sliding member.

[0021] The first fixing member has a first limiting step provided on its front and rear sides;

[0022] The first sliding member is slidably connected to the first limiting step through the first limiting groove of the roller, and at the same time the limiting buckle is engaged with the first limiting step.

[0023] In one feasible implementation, the lifting adjustment component includes a damping adjustment component;

[0024] The damping adjustment assembly includes a second sliding member and a second fixing member;

[0025] The second sliding member is slidably connected to the second fixing member, and the second fixing member is fixedly connected to the air duct assembly;

[0026] The second fixing member has an adjusting member on its side, and the adjusting member has multiple shelf adjusting holes on its front side. The second sliding member has a second fulcrum hole on its front side. The shelf fulcrum rod can pass through the L-shaped through hole and the second fulcrum hole and overlap with the adjusting hole.

[0027] In one feasible implementation, a one-way damper is provided at the rear of the second sliding member, a gear is provided on the one-way damper, and a second limiting groove is provided on both outer sides of the second sliding member.

[0028] The second fastener has a rack on one side inside, and a second limiting step is provided on both the front and rear sides inside the second fastener;

[0029] The second sliding member is installed inside the second fixing member from both the upper and lower ends through the cooperation of the second limiting groove and the second limiting step, and the gear and rack are in rolling connection.

[0030] In one feasible implementation, the shelf is provided with a lever on both sides, and the shelf can be extended or retracted laterally by pushing or pulling the lever.

[0031] In one feasible implementation, a limiting hook is provided at the front of the fulcrum rod, and a third limiting step is provided on the back of the second fulcrum hole;

[0032] When the shelf actuating component is pushed, the fulcrum rod retracts to the limit hook and abuts against the third limit step. The fulcrum rod disengages from the first and second fixing components, and the shelf is raised or pressed down, causing the first and second sliding components to adjust up and down.

[0033] Secondly, this application provides a refrigerator including a cabinet liner, the interior of which forms a storage compartment, and the inner sidewall of the cabinet liner is symmetrically provided with grooves. The refrigerator also includes an air duct assembly, which is installed in the grooves, and the outer side of the air duct assembly is flush with the sidewall of the cabinet liner.

[0034] The air duct assembly includes an air duct liner and an air duct cover;

[0035] The air outlet area is set in the middle of the air duct liner, and the bottom of the air outlet area is the air inlet. The front of the air duct cover is provided with multiple air outlets. The air duct cover is fixed to the front of the air outlet area of ​​the air duct liner, forming an air circulation channel with bottom air inlet and front air outlet.

[0036] The air duct assembly also includes a decorative cover plate, which is fixed to the front of the air duct assembly. An air outlet clearance hole is provided on the front of the decorative cover plate, and the front of the air outlet is flush with the front of the air duct cover plate.

[0037] The refrigerator also includes the aforementioned shelf assembly, which is disposed between the left and right side wall air duct assemblies inside the storage compartment.

[0038] This application provides a shelf and a refrigerator. The shelf is applied to a refrigerator with a liner. Air duct assemblies are embedded in the inner walls of both sides of the liner. The shelf is connected to two of the air duct assemblies on each side. The shelf includes a shelf unit and a connector. The shelf unit is a pin-type shelf with multiple support rods on both sides. The connector is located within the air duct assemblies. The air duct assemblies have multiple through holes, each corresponding to one of the support rods. The support rods of the shelf unit pass through the corresponding through holes and connect to the connector. The shelf's fixing structure is integrated within the air duct assemblies, reducing the space occupied inside the refrigerator. The side wall air duct assembly eliminates the need for a rear air duct, reducing the thickness of the back of the refrigerator body and increasing the usable depth of the storage space. The side wall air duct assembly increases the thickness of the side walls of the refrigerator body, eliminating the need for a stopper fixed to the side wall of the liner, thus meeting the requirement for drawer pull-out when the door is opened at 90°. Attached Figure Description

[0039] Figure 1 This is a structural schematic diagram of the shelving assembly provided in this application;

[0040] Figure 2 This is a schematic diagram of the fixed support components and their connection structure;

[0041] Figure 3 This is a structural diagram of the shelf;

[0042] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0043] Figure 5 This is a first schematic diagram of the shelving assembly;

[0044] Figure 6 This is a second schematic diagram of the shelving assembly;

[0045] Figure 7 This is a schematic diagram of the sliding adjustment component;

[0046] Figure 8 This is a schematic diagram of the damping adjustment component;

[0047] Figure 9 This is the first schematic diagram of the shelf;

[0048] Figure 10 This is a first schematic diagram of the limiting hook and its connecting structure;

[0049] Figure 11 This is the second schematic diagram of the shelf;

[0050] Figure 12 This is a second schematic diagram of the limiting hook and its connecting structure;

[0051] Figure 13 This is the third schematic diagram of the shelf;

[0052] Figure 14 This is the third schematic diagram of the limiting hook and its connecting structure;

[0053] Figure 15 This is a schematic diagram of the damping adjustment component and its connection structure;

[0054] Figure 16 This is a structural schematic diagram of the refrigerator provided in this application;

[0055] Figure 17 This is a structural diagram of the box liner;

[0056] Figure 18 This is a structural schematic diagram of the air duct liner;

[0057] Figure 19 This is a structural schematic diagram of the air duct cover.

[0058] Explanation of reference numerals in the attached figures:

[0059] 100-Refrigerator, 1-Cabinet liner, 2-Storage compartment, 3-Air duct assembly, 4-Shelf assembly, 11-Groove, 31-Air duct liner, 32-Air duct cover, 33-Decorative cover, 41-Shelf, 42-Fixed support, 43-Sliding adjustment assembly, 44-Damping adjustment assembly, 311-Air inlet, 321-Air outlet, 322-Square through hole, 323-L-shaped through hole, 331-Allowing hole, 411-Pivot rod, 412-Actuating component, 421-First pivot hole, 431-First sliding component, 432-First fixing component 433-Roller, 434-Shock-absorbing pad, 441-Second sliding member, 442-Second fixing member, 443-One-way damper, 444-Adjusting member, 4111-Limit hook, 4311-Limit buckle, 4312-Second fulcrum hole, 4313-Third limit step, 4321-First limit step, 4322-Flange, 4323-Adjusting hole, 4324-Shelf removal hole, 4331-First limit groove, 4411-Second limit groove, 4421-Rack, 4422-Second limit step, 4431-Gear. Detailed Implementation

[0060] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of this application.

[0061] Most existing air-cooled refrigerators have the air duct assembly located at the back of the refrigerator liner, while the air outlet is located on the front or sides of the air duct assembly. This design is highly modular and easy to assemble.

[0062] To enhance storage convenience and enable layered storage of food, most modern refrigerators incorporate shelves within the cabinet. Two common shelf structures are side-wall shelves and cantilever shelves. Side-wall shelves utilize symmetrically arranged raised ribs on the inner wall of the refrigerator liner to support the shelves, resulting in a simple structure and easy assembly. Cantilever shelves, on the other hand, are supported by a cantilever structure on the rear wall of the liner, eliminating the need for ribs on the side walls and creating a clean, minimalist appearance.

[0063] To meet the requirement that the front of a built-in refrigerator is flush with the cabinet, built-in refrigerators are thinner than traditional non-built-in refrigerators, resulting in a shallower usable storage space.

[0064] To increase the refrigerator's volume ratio, the foam layer on the side walls of built-in refrigerators is generally thinner. In addition, to meet the requirement of 90° door opening, blocks need to be installed on both sides of the drawers of built-in refrigerators, and the front appearance of the drawers is not simple enough.

[0065] The existing side wall shelves have several drawbacks. When taller items are placed on them and the shelf spacing needs to be adjusted, the food must be removed from the shelf and the shelf removed from the assembly structure due to structural limitations. After adjustment, the food must be put back on the shelf, which is inconvenient. When the refrigerator is embedded in the cabinet, the shelves cannot be pulled out from the refrigerator due to the limited door opening angle, making shelf height adjustment impossible. Due to the need to fix the shelves, the lining ribs protrude quite a bit from the side wall of the refrigerator liner, resulting in many steps that are neither aesthetically pleasing nor make use of the refrigerator liner's thermoforming process.

[0066] While existing cantilever shelves do not require removal from the refrigerator for height adjustment, they are heavy and inconvenient to assemble and disassemble due to their assembly structure.

[0067] The purpose of this application is to overcome at least one deficiency in the prior art by placing the air duct back panel on the side wall of the refrigerator liner, while eliminating the air duct assembly on the back of the refrigerator liner, thus reducing the thickness of the back of the refrigerator body and increasing the usable depth of the storage space. A further purpose is to increase the thickness of the refrigerator body side wall to accommodate the installation requirements of the side wall air duct assembly. A further purpose is to eliminate the block fixed to the side wall of the refrigerator liner, increasing the thickness of the refrigerator body side wall to meet the requirements for drawer extension when the door is opened at 90°. A further purpose is to provide a shelf fixing structure, which is integrated into the air duct assembly. A further purpose is to provide a shelf lifting and adjusting mechanism with multiple adjustment positions; pushing the toggle position releases the limit, enabling multi-level and wide-range adjustment of the shelf. A further purpose is to provide a shelf lifting and adjusting mechanism with a one-way damper inside; the downward resistance of the damper counteracts the weight of the shelf falling freely, making shelf adjustment easier. A further purpose is to provide a refrigerator that uses this side wall air duct assembly or this shelf simultaneously or individually.

[0068] The specific structure of the shelf and refrigerator provided in this application will be described in detail below with reference to the accompanying drawings.

[0069] Reference Figures 1-15 As shown, this application embodiment provides a shelf 4, which is applied to a refrigerator 100. The refrigerator 100 has a cabinet liner 1, and air duct assemblies 3 are embedded in the inner walls of both sides of the cabinet liner 1. The two sides of the shelf 4 are respectively connected to two of the air duct assemblies 3. The shelf 4 includes a shelf 41 and a connector.

[0070] The shelf 41 is a four-point pin shelf with side-sealed edges, and multiple support rods 411 are provided on both sides of the shelf 41.

[0071] The connector is disposed inside the air duct assembly 3. The air duct assembly 3 is provided with multiple through holes, and the multiple through holes correspond one-to-one with the multiple fulcrum rods 411.

[0072] The fulcrum rod 411 of the shelf 41 passes through the corresponding through hole and is connected to the connector.

[0073] Reference Figures 1-3 As shown, in some embodiments, the shelf 41 is a fixed shelf, the connector is a fixed support 42, and the through hole is a square through hole 322;

[0074] The fixed support 42 is fixed inside the air duct assembly;

[0075] The fulcrum rod 411 of the fixed shelf passes through the corresponding square through hole 322 and is connected to the fixed support member 42.

[0076] Specifically, the fixed support member 42 is provided with a first fulcrum hole 421, and the fulcrum rod 411 passes through the corresponding square through hole 322 and overlaps with the first fulcrum hole 421.

[0077] Reference Figures 3-15 As shown, in some embodiments, the shelf 41 is an adjustable shelf, the connector is a lifting adjustment assembly, and the through hole is an L-shaped through hole 323;

[0078] The lifting and adjusting component is fixed inside the air duct component;

[0079] The fulcrum rod 411 of the adjustable shelf passes through the corresponding L-shaped through hole 323 and is connected to the lifting and adjusting assembly.

[0080] Specifically, the lifting adjustment component includes a sliding adjustment component 43;

[0081] The sliding adjustment assembly 43 includes a first sliding member 431 and a first fixing member 432;

[0082] The first sliding member 431 is slidably connected to the first fixing member 432, and the first fixing member 432 is fixedly connected to the air duct assembly;

[0083] The first fixing member 432 has a flange 4322 on its side, and the flange 4322 has a plurality of shelf adjustment holes 4323 on its front side. The first sliding member 431 has a second fulcrum hole 4312 on its front side. The shelf fulcrum rod 411 passes through the L-shaped through hole 323 and the second fulcrum hole 4312 and is connected to the adjustment hole 4323.

[0084] In some embodiments, a roller 433 is provided at the rear of the first sliding member 431, a first limiting groove 4331 is provided around the roller 433, and limiting buckles 4311 are provided on the front and rear sides of the outer side of the first sliding member 431.

[0085] The first fixing member 432 has a first limiting step 4321 on its front and rear sides.

[0086] The first sliding member 431 is slidably connected to the first limiting step 4321 through the first limiting groove 4331 of the roller 433, and at the same time, the limiting buckle 4311 is limited and engaged with the first limiting step 4321.

[0087] like Figure 8 As shown, in some embodiments, the lifting adjustment assembly includes a damping adjustment assembly 44;

[0088] The damping adjustment assembly 44 includes a second sliding member 441 and a second fixing member 442;

[0089] The second sliding member 441 is slidably connected to the second fixing member 442, and the second fixing member 442 is fixedly connected to the air duct assembly;

[0090] A one-way damper 443 is provided at the rear of the second sliding member 441, and a gear 4431 is provided on the one-way damper 443. Second limiting grooves 4411 are provided on the two outer sides of the second sliding member 441.

[0091] The second fixing member 442 has a rack 4421 on one side inside, and a second limiting step 4422 on both the front and rear sides inside.

[0092] The second sliding member 441 is installed into the second fixing member 442 from both the upper and lower ends of the second fixing member 442 through the cooperation of the second limiting groove 4411 and the second limiting step 4422. At the same time, the gear 4431 and the rack 4421 are in rolling connection.

[0093] Beneficially, when the shelf is raised or lowered, the damping force of the one-way damper gear 4431 rolling downwards counteracts the weight of the shelf.

[0094] The second fixing member 442 has an adjusting member 444 on its side. The adjusting member 444 has multiple shelf adjusting holes 4323 on its front. The second sliding member 441 has a second fulcrum hole 4312 on its front. The shelf fulcrum rod 411 can pass through the L-shaped through hole 323 and the second fulcrum hole 4312 and overlap with the adjusting hole 4323.

[0095] A limiting hook 4111 is provided at the front of the fulcrum rod 411, and a third limiting step 4313 is provided on the back of the second fulcrum hole 4312.

[0096] When the shelf 41 needs to be adjusted, push the shelf actuating member 412, and the fulcrum rod 411 will retract until the limit hook 4111 abuts against the third limit step 4313. At the same time, the fulcrum rod 411 will disengage from the first fixing member 432 and the second fixing member 442. At this time, the shelf 41 can be raised or lowered to drive the first sliding member 431 and the second sliding member 441 to adjust up and down.

[0097] Furthermore, the front sidewall of the lowest adjustment hole on the first fixing member 432 and the adjusting member 444 extends forward to form a shelf removal hole 4324. The width of the shelf removal hole 4324 is the same as or slightly smaller than the width of the bottom of the L-shaped through hole 323.

[0098] When it is necessary to disassemble or assemble the shelf 41, first adjust the shelf 41 to the lowest usable position, pull the shelf 41 forward until the front side wall of the fulcrum rod 411 abuts against the front side wall of the shelf disassembly hole 4324, push the shelf toggle 412, at this time, the fulcrum rod 411 is not limited by the third limiting step 4313, and the fulcrum rod 411 can retract to disengage from the L-shaped through hole 323, at this time the shelf 41 can be disassembled or assembled.

[0099] Furthermore, since the other adjustment holes above the lowest usage position cannot achieve the forward pulling action of the shelf 41, the shelf 4 cannot be disassembled or assembled.

[0100] Furthermore, shock-absorbing pads 434 are provided at both the upper and lower ends of the first fixing member 432 and the second fixing member 442.

[0101] Advantageously, when the shelf 41 is removed, the symmetrically arranged first sliding member 431 and second sliding member 441 are both in the same horizontal position under the support of the shock-absorbing pad 434, which facilitates the reassembly of the shelf 41; when the shelf 41 is adjusted to the highest or lowest point, collision noise is eliminated.

[0102] Furthermore, during the adjustment of the shelf 41 at its lowest and highest points, both the first sliding member 431 and the second sliding member 441 can cover the L-shaped through hole 323 to prevent the internal structure from being exposed.

[0103] Furthermore, such as Figure 16 As shown, during the adjustment process of the shelf 41 at the lowest and highest points, the shelf 41 is always positioned between the upper and lower air outlets 321, ensuring that each shelf 41 has an air outlet 321.

[0104] Reference Figures 16-19 As shown, this application provides a refrigerator. The refrigerator 100 includes a cabinet liner 1, which forms a storage compartment 2 inside the cabinet liner 1. The inner sidewall of the cabinet liner 1 is symmetrically provided with grooves 11. The refrigerator 100 also includes an air duct assembly 3, which is installed in the grooves 11. The outer side of the air duct assembly 3 is flush with the sidewall of the cabinet liner 1.

[0105] The air duct assembly 3 includes an air duct liner 31 and an air duct cover 32;

[0106] The air outlet area is provided in the middle of the air duct liner 31, and the bottom of the air outlet area is the air inlet 311. The air duct cover 32 is provided with multiple air outlets 321 on the front. The air duct cover 32 is fixed to the front of the air outlet area of ​​the air duct liner 31, forming an air circulation channel with bottom air inlet and front air outlet.

[0107] The air duct assembly 3 also includes a decorative cover plate 33, which is fixed to the front of the air duct assembly 3. An air outlet clearance hole 331 is provided on the front of the decorative cover plate 33, and the front of the air outlet 321 is flush with the front of the air duct cover plate 32.

[0108] The refrigerator 100 also includes the aforementioned shelf assembly 4, which is disposed between the left and right side wall air duct assemblies 3 inside the storage compartment 2.

[0109] Both the square through hole 322 and the L-shaped through hole 323 are provided on the air duct cover plate 32.

[0110] The side wall air duct assembly provided in this application eliminates the rear air duct, reduces the thickness of the back of the cabinet, and increases the usable depth of the storage space.

[0111] The side wall air duct assembly provided in this application increases the thickness of the cabinet side wall and eliminates the block fixed to the side wall of the cabinet liner, thus meeting the requirements for drawer pulling out when the door is opened at 90°.

[0112] The shelf fixing structure provided in this application is integrated inside the air duct assembly, which reduces the space occupied inside the refrigerator.

[0113] The shelf lifting and adjusting mechanism provided in this application has multiple adjustment positions. By pushing the toggle position to release the limit, the shelf can be adjusted in multiple levels and with a wide range.

[0114] The shelf lifting and adjusting mechanism provided in this application has a one-way damper inside. The downward resistance of the damper counteracts the weight of the shelf falling freely, making shelf adjustment easier.

[0115] It is readily understood that, based on the several embodiments provided in this application, those skilled in the art can combine, split, or reorganize the embodiments of this application to obtain other embodiments, none of which exceed the protection scope of this application.

[0116] The above detailed embodiments further illustrate the purpose, technical solution, and beneficial effects of the embodiments of this application. It should be understood that the above are merely specific embodiments of the embodiments of this application and are not intended to limit the protection scope of the embodiments of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solutions of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. A shelf, characterized in that: The shelf is applied to a refrigerator, which has a cabinet liner. Air duct components are embedded in the inner walls of both sides of the cabinet liner. The two sides of the shelf are respectively connected to two of the air duct components. The shelf includes a shelf (41) and a connector. The shelf (41) is a pin shelf, and multiple support rods (411) are provided on both sides of the shelf (41). The connector is disposed inside the air duct assembly, and the air duct assembly is provided with a plurality of through holes, and the plurality of through holes correspond one-to-one with the plurality of fulcrum rods (411); The fulcrum rod (411) of the shelf (41) passes through the corresponding through hole and is connected to the connector; the shelf (41) is an adjustable shelf, the connector is a lifting adjustment component, and the through hole is an L-shaped through hole (323). The lifting and adjusting component is fixed inside the air duct component; The fulcrum rod (411) of the adjustable shelf passes through the corresponding L-shaped through hole (323) and is connected to the lifting adjustment assembly.

2. The shelf according to claim 1, characterized in that: The lifting adjustment component includes a sliding adjustment component (43); The sliding adjustment assembly (43) includes a first sliding member (431) and a first fixing member (432). The first sliding member (431) is slidably connected to the first fixing member (432), and the first fixing member (432) is fixedly connected to the air duct assembly; The first fixing member (432) has a flange (4322) on its side, and the flange (4322) has multiple shelf adjustment holes (4323) on its front side. The first sliding member (431) has a second fulcrum hole (4312) on its front side. The shelf fulcrum rod (411) passes through the L-shaped through hole (323) and the second fulcrum hole (4312) and connects to the adjustment hole (4323).

3. The shelf according to claim 2, characterized in that: A roller (433) is provided at the rear of the first sliding member (431), a first limiting groove (4331) is provided around the roller (433), and a limiting buckle (4311) is provided on the front and rear sides of the outer side of the first sliding member (431). The first fixing member (432) has a first limiting step (4321) on its front and rear sides; The first sliding member (431) is slidably connected to the first limiting step (4321) through the first limiting groove (4331) of the roller, and at the same time the limiting buckle (4311) is limited and engaged with the first limiting step (4321).

4. The shelf and refrigerator according to claim 1, characterized in that: The lifting adjustment assembly includes a damping adjustment assembly (44); The damping adjustment assembly (44) includes a second sliding member (441) and a second fixing member (442). The second sliding member (441) is slidably connected to the second fixing member (442), and the second fixing member (442) is fixedly connected to the air duct assembly; The second fixing member (442) has an adjusting member (444) on its side. The adjusting member (444) has multiple shelf adjusting holes (4323) on its front. The second sliding member (441) has a second fulcrum hole (4312) on its front. The shelf fulcrum rod (411) can pass through the L-shaped through hole (323) and the second fulcrum hole (4312) and overlap with the adjusting hole (4323).

5. The shelf and refrigerator according to claim 4, characterized in that: A one-way damper (443) is provided at the rear of the second sliding member (441), and a gear (4431) is provided on the one-way damper (443). A second limiting groove (4411) is provided on both sides of the outer side of the second sliding member (441). The second fixing member (442) has a rack (4421) on one side inside, and a second limiting step (4422) is provided on both the front and rear sides inside the second fixing member (442). The second sliding member (441) is installed inside the second fixing member (442) from the upper and lower ends through the cooperation of the second limiting groove (4411) and the second limiting step (4422), and the gear (4431) and the rack (4421) are in rolling connection.

6. The shelf according to claim 5, characterized in that: Both sides of the shelf (41) are provided with a lever (412), and the shelf (41) can be extended or retracted laterally by pushing or pulling the lever (412).

7. The shelf according to claim 6, characterized in that: A limiting hook (4111) is provided at the front of the fulcrum rod (411), and a third limiting step (4313) is provided on the back of the second fulcrum hole (4312). When the shelf pusher (412) is pushed, the fulcrum rod (411) retracts to the limit hook (4111) and abuts against the third limit step (4313). The fulcrum rod (411) disengages from the first fixing member (432) and the second fixing member (442), and the shelf (41) is lifted or pressed down, which drives the first sliding member (431) and the second sliding member (441) to adjust up and down.

8. A refrigerator, characterized in that: The refrigerator (100) includes a cabinet liner (1), which forms a storage chamber (2) inside. The cabinet liner (1) has symmetrical grooves (11) on its inner sidewall. The refrigerator (100) also includes an air duct assembly (3), which is installed in the groove (11). The outer side of the air duct assembly (3) is flush with the sidewall of the cabinet liner (1). The air duct assembly (3) includes an air duct liner (31) and an air duct cover (32). The air outlet area is set in the middle of the air duct liner (31), and the bottom of the air outlet area is the air inlet (311). The air duct cover (32) is provided with multiple air outlets (321) on the front. The air duct cover (32) is fixed on the front of the air outlet area of ​​the air duct liner (31) to form an air circulation channel with bottom air inlet and front air outlet. The air duct assembly (3) also includes a decorative cover plate (33), which is fixed on the front of the air duct assembly (3). The front of the decorative cover plate (33) is provided with an air outlet clearance hole (331), and the front of the air outlet (321) is flush with the front of the air duct cover plate (32). The refrigerator (100) further includes a shelf as described in any one of claims 1-7, the shelf being disposed between the left and right side wall air duct assemblies (3) inside the storage compartment (2).

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