Shelf assembly and refrigerator

Abstract

The utility model discloses a shelf assembly and a refrigerator. The shelf assembly comprises a shelf body, a driving mechanism and a sliding mechanism, and the driving mechanism comprises a motor, a reel and a pull rope; the sliding mechanism comprises a supporting frame connected with the refrigerator and a sliding piece in sliding fit with the supporting frame, a sliding rail is arranged on the supporting frame, the shelf body is fixed to the sliding piece, the sliding piece comprises a sliding block, a pulley and a roller, and the rotating plane of the pulley and the rotating plane of the roller are parallel to the width direction of the sliding rail. The pulley is hung on the pull rope, and when the wire winding wheel winds the pull rope, the pull rope drives the pulley to move upwards. In the vertical displacement process of the shelf body, the wheel faces of the idler wheels are matched with the two sides of the sliding rails, even if the shelf body is inclined under the condition that the shelf body bears heavy loads, the wheel faces of the idler wheels can play a role in supporting and force releasing, the shelf body is not prone to being inclined greatly, and in addition, the shelf body is not prone to being inclined greatly. The storage rack body is not prone to being blocked in the up-down moving process.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerators, in particular to a shelf assembly and a refrigerator. Background Art

[0002] With the continuous improvement of living standards, the market share of multi-door refrigerators with features such as large capacity, multiple functions and classified storage is increasing, and people's requirements for the intelligence of refrigerator products are also getting higher and higher.

[0003] In existing refrigerator products, in order to flexibly adjust the height of the shelf, a traction component and a shelf that can be raised and lowered in the height direction are provided in the refrigerator. The traction component cooperates with the shelf to automatically and flexibly adjust the height of the shelf.

[0004] The above-mentioned shelves usually achieve sliding cooperation with the box body through a slide rail slider structure. However, when the load of the shelf is large or the traction component has been running for a long time, the slider is prone to tilt, causing interference between the slider and the slide rail, causing the adjustment of the shelf to become stuck, and the shelf is prone to tilt, affecting user use. Utility Model Content

[0005] The purpose of the utility model is to provide a shelf assembly and a refrigerator to solve the deficiencies in the prior art.

[0006] In order to achieve one of the above objectives, the present invention provides a shelf assembly, comprising:

[0007] The shelf body comprises a first end and a second end disposed opposite to the first end;

[0008] The driving mechanism includes a motor, a winding wheel, and a pull rope, wherein one end of the pull rope is fixed to the winding wheel and the other end is used to be fixed to the refrigerator body. The motor drives the winding wheel to rotate to wind or release the pull rope;

[0009] The sliding mechanism includes a support frame for connecting to the refrigerator liner, a sliding member slidably engaged with the support frame, the support frame is provided with a slide rail in the up-down direction, the shelf body is fixed to the slide rail, the slide rail includes a slider connected to the first end of the shelf body, a pulley rotated on the slider, and a roller rollingly engaged with the slide rail, the rotation axes of the pulley and the roller are perpendicular to the distribution direction of the first end and the second end, and the rotation axes of the pulley and the roller are parallel to the shelf body;

[0010] The pulley is suspended on the pull rope so as to move in an up and down direction under the drive of the pull rope.

[0011] As a further improvement of one embodiment of the present invention, the support frame includes a first side plate and a second side plate connected to each other, the slide rail includes a first convex plate fixed to the first side plate, a first bent plate fixed to the second side plate, and a second convex plate fixed to the first bent plate, the first convex plate and the second convex plate are parallel to the second side plate, and a gap is left between the first convex plate and the second convex plate for the connecting shaft of the roller to pass through, and the first convex plate, the first side plate, the second side plate, the first bent plate and the second convex plate enclose a space for the roller to move.

[0012] As a further improvement of one embodiment of the present invention, the slider includes a main plate parallel to the second side plate and a mounting portion arranged on the main plate, the roller is rotatably connected to the side of the main plate facing the slide rail, the pulley is rotatably connected to the mounting portion, and the pulley is arranged on the side away from the slide rail.

[0013] As a further improvement of an embodiment of the present invention, the outer peripheral side of the roller extends to the outer edge of the main body plate facing the first side plate.

[0014] As a further improvement of one embodiment of the present invention, the mounting portion includes a first connecting ear plate extending upward in the vertical direction of the main body plate, a third bent plate fixed to the first connecting ear plate, and a second connecting ear plate fixed to the third bent plate, the third bent plate extending in a direction away from the slide rail, and the first connecting ear plate and the second connecting ear plate are spaced apart to form a space for installing the pulley.

[0015] As a further improvement of an embodiment of the present invention, the second connecting ear plate is connected to a third convex plate extending to below the pulley, and a gap is left between the third convex plate and the pulley for the pull rope to pass through.

[0016] As a further improvement of one embodiment of the present invention, the slider also includes a second bent plate fixed to the main body plate and a connecting plate fixed to the second bent plate, the second bent plate extends in a direction away from the second side plate, the connecting plate extends in a direction away from the first side plate, and the first end of the shelf body is fixedly connected to the connecting plate.

[0017] As a further improvement of an embodiment of the present invention, the support frame further comprises an upper limit block and a lower limit block provided on the slide rail and arranged in the vertical direction, and the slider slides between the upper limit block and the lower limit block;

[0018] The upper limit block and the lower limit block both have an engaging portion engaged with the slide rail, and a side of the engaging portion facing the slider is configured as an arc surface matching the shape of the roller.

[0019] As a further improvement of one embodiment of the present invention, the sliding mechanism is provided with two groups distributed in the horizontal direction, the shelf body is fixed between the two sliders, the pull ropes are provided with two corresponding to the pulleys, and the winding wheel is connected to the two pull ropes to simultaneously control the winding or release of the two pull ropes.

[0020] In order to achieve one of the above-mentioned objectives, one embodiment of the present invention provides a refrigerator, including a box body, in which the above-mentioned shelf assembly is arranged.

[0021] Compared with the prior art, the rotation axes of the pulleys and rollers in the present invention extend in the left-right direction, that is, the rotation planes of the pulleys and rollers are parallel to the slide rails. When the shelf body is displaced up and down, the wheel surfaces of the rollers cooperate with the two sides of the slide rails. Even if the shelf body tilts when the load on the shelf body is heavy, the wheel surfaces of the rollers can support and release the force, and the shelf body is not prone to large tilting. In addition, the shelf body is not prone to jamming during the up and down movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is an axonometric view of a shelf assembly according to the present embodiment;

[0023] Figure 2 is a structural side view of a shelf assembly in this embodiment;

[0024] Figure 3 yes Figure 1 The middle part of the structure is a detailed diagram, mainly showing the related structure of the shelf body and the sliding mechanism;

[0025] Figure 4 is a top view of the structure of the sliding mechanism in this embodiment;

[0026] Figure 5 is an exploded view of the sliding mechanism in this embodiment;

[0027] Figure 6 Schematic diagram of the structure of the support frame in this embodiment;

[0028] Figure 7 Schematic diagram of the structure of the sliding member in this embodiment;

[0029] Figure 8 Schematic diagram of the structure of the slider in this embodiment;

[0030] Figure 9 Schematic diagram of the structure of the lower limit block in this embodiment.

[0031] Reference numerals:

[0032] 10. Shelf body; 20. Sliding mechanism; 21. Support frame; 211. First side panel; 212. Second side panel; 213. First mounting hole; 214. Slide rail; 2141. First protruding plate; 2142. First bending plate; 2143. Second protruding plate; 22. Sliding member; 221. Sliding block; 2211. Main plate; 2212. Second bending plate; 2213. Connecting plate; 2214. Second mounting hole; 2215. First connecting ear plate; 2216. Third bending plate; 2217. Second connecting ear plate; 2218. Third protruding plate; 222. Pulley; 223. Roller; 23. Upper limit block; 24. Lower limit block; 241. Engaging part; 30. Driving mechanism; 31. Motor; 32. Winding wheel; 33. Pull rope. DETAILED DESCRIPTION

[0033] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] The terms "first," "second," "third," "fourth," etc., in this utility model are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Furthermore, it should be noted that, unless otherwise expressly specified or limited, the term "connection" should be understood in a broad sense. For example, a connection can be a direct connection or an indirect connection through an intermediate medium, and can be a fixed connection, a movable connection, a detachable connection, or an integral connection. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0035] Terms indicating spatial relative positions, such as "upper," "above," "lower," and "below," are used in this embodiment for ease of explanation to describe the relationship of one element or feature relative to another element or feature as shown in the accompanying drawings. Spatially relative terms may be intended to encompass different orientations of the device during use or operation other than the orientation shown in the drawings.

[0036] For the convenience of description, taking the practical scenario of the shelf assembly in the refrigerator as a reference, it is defined as follows: the height direction of the refrigerator is the up and down direction, the side where the refrigerator body is connected to the door body is the front, the rear wall opposite to the refrigerator body is the rear, and the width direction of the refrigerator is the left and right direction.

[0037] In order to make those skilled in the art better understand the technical solution of the present invention, the following will be combined with the appended drawings in the embodiment of the present invention. Figure 1 -9. Provide a clear and complete description of the technical solutions in the embodiments of the present invention.

[0038] An embodiment of the present invention provides a shelf assembly, referring to Figure 1-3. The shelf assembly includes a shelf body 10, a sliding mechanism 20, and a drive mechanism 30. The sliding mechanism 20 includes a support frame 21 for connecting to the refrigerator liner and a slider 22 that slidably engages with the support frame 21. The support frame 21 extends vertically. The shelf body 10 is fixedly connected to the slider 22. The drive mechanism 30 is used to drive the slider 22 along the vertical direction of the support frame 21, so that the slider 22 drives the shelf body 10 to move up and down within the refrigerator liner, allowing the shelf body 10 to be flexibly adjusted in height.

[0039] Reference Figure 4 The support frame 21 includes a first side panel 211 and a second side panel 212 connected to each other, and the first side panel 211 and the second side panel 212 are perpendicular to each other. The first side panel 211 is provided with a first mounting hole 213 for a first fastener (not shown) to pass through. The first side panel 211 is connected to the rear wall of the refrigerator container via the first fastener, and the second side panel 212 is connected to the side wall of the refrigerator container.

[0040] Reference Figure 5 and Figure 6 The support frame 21 is provided with a slide rail 214 extending in a vertical direction. A first protruding plate 2141 is perpendicularly connected to the side wall of the first side panel 211. The first protruding plate 2141 is parallel to the second side panel 212 and spaced apart from the second side panel 212. A first bent plate 2142 is perpendicularly connected to the end of the second side panel 212 away from the first side panel 211. The first bent plate 2142 extends toward one side of the sliding member 22 and is parallel to the first side panel 211.

[0041] A second protruding plate 2143 is perpendicularly connected to the end of the first bent plate 2142 away from the second side plate 212. The second protruding plate 2143 extends toward the first side plate 211. The second protruding plate 2143 is parallel to the second side plate 212 and corresponds to the position of the first protruding plate 2141. A gap is provided on the facing side of the first protruding plate 2141 and the second protruding plate 2143 for the connecting shaft of the roller 223 described below to pass through.

[0042] Thus, the first protruding plate 2141 , the first side plate 211 , the second side plate 212 , the first bent plate 2142 , and the second protruding plate 2143 together form the aforementioned slide rail 214 structure.

[0043] Reference Figure 5 and Figure 7The sliding member 22 includes a slider 221 that slides with the support frame 21, a pulley 222 and a roller 223 that are rotatably connected to the slider 221, and the shelf body 10 is fixedly connected to the slider 221. Under the support of the slider 221, the shelf body 10 can move up and down along the vertical direction of the support frame 21, and the user can flexibly adjust the position of the shelf body 10 in the height direction of the refrigerator storage chamber.

[0044] The slider 221 includes a main plate 2211 parallel to the second side plate 212, a second bent plate 2212 vertically connected to the main plate 2211, and a connecting plate 2213 vertically connected to the second bent plate 2212 away from the main plate 2211. The second bent plate 2212 extends in a direction away from the second side edge. The main plate 2211 and the connecting plate 2213 are both parallel to the second side plate 212. The connecting plate 2213 is provided with a second mounting hole 2214 for a second fastener (not shown in the figure) to pass through.

[0045] The shelf body 10 has a first end facing the rear of the refrigerator and a second end arranged opposite to the first end. The first end and the second end are distributed along the front and back directions of the refrigerator. The first end of the shelf body 10 is fixedly connected to the connecting plate 2213 by a second fastener.

[0046] The rotation axes of the pulley 222 and the roller 223 are perpendicular to the distribution direction of the first end and the second end, and the rotation axes of the pulley 222 and the roller 223 are parallel to the shelf body 10, that is, the rotation axes of the pulley 222 and the roller 223 extend in the left and right directions, and the extension planes (that is, the rotation planes) of the pulley 222 and the roller 223 extend in the front, back, up and down directions.

[0047] It is easier to understand that being parallel to the shelf body 10 means being roughly consistent with the extension direction of the shelf body 10; for example, if the shelf body 10 is a plane, the rotation axes of the pulley 222 and the roller 223 are parallel to the plane; if it is a slightly curved surface, it is parallel to a plane that is approximately the same as the curved surface.

[0048] The roller 223 is rotatably connected to the side of the main plate 2211 facing the second side plate 212. The roller 223 rolls within the slide rail 214, and the diameter of the roller 223 matches the width of the slide rail 214. The cooperation between the roller 223 and the slide rail 214 limits the slider 221 in the horizontal direction, so that the slider 221 can only move in the vertical direction and cannot move horizontally. The width of the slide rail 214 is the length of the slide rail 214 extending in the front-to-back direction. In other words, the extension plane of the pulley 222 and roller 223 is parallel to the width of the slide rail 214.

[0049] Since the slide rail 214 limits the roller 223 in the front-to-back direction, even if the second end of the shelf body 10 tilts downward due to a heavy load, the force generated by the tilt extends along the cross-sectional direction of the wheel surface of the roller 233, and the wheel surface of the roller 223 can cooperate with the slide rail 214 to play a supporting role, thereby ensuring that the slider 221 drives the shelf body 10 to move smoothly in the vertical direction, and the shelf body 10 will not experience adjustment jams when the load is heavy.

[0050] Reference Figure 7 The outer peripheral side of the roller 223 extends to the outer edge of the main plate 2211 toward the first side plate 211, so that the main plate 2211 and the first side plate 211 are spaced apart. Even if the shelf body 10 is tilted, the main plate 2211 will not collide with the first side plate 211, allowing the user to smoothly adjust the position of the shelf body 10.

[0051] Reference Figure 7 and Figure 8 The slider 221 further includes a mounting portion provided on the main body plate 2211 for mounting the pulley 222. The mounting portion includes a first connecting lug plate 2215 connected to the upper end of the main body plate 2211, a third bent plate 2216 perpendicularly connected to the first connecting lug plate 2215, and a second connecting lug plate 2217 perpendicularly connected to the third bent plate 2216. The first connecting lug plate 2215 and the second connecting lug plate 2217 are parallel to each other and spaced apart from each other to form a mounting space for mounting the pulley 222.

[0052] A third mounting hole (not shown in the figure) is respectively provided on the first connecting ear plate 2215 and the second connecting ear plate 2217. The two third mounting holes are arranged opposite to each other. The pulley 222 is connected between the first connecting ear plate 2215 and the second connecting plate 2213 through the two third mounting holes. In addition, the pulley 222 is located on the side of the main plate 2211 away from the slide rail 214.

[0053] When the shelf body 10 tilts under a heavy load, the first connecting ear plate 2215 and the second connecting ear plate 2217 for supporting the pulley 222 will not collide with the support frame 21, making it less likely for the shelf body 10 to get stuck during movement.

[0054] Refer again Figure 1 and Figure 2In this embodiment, the drive mechanism 30 includes a motor 31, a winding reel 32, and a pull cord 33. The motor 31 is connected to the refrigerator housing. The first end of the pull cord 33 is fixed to the winding reel 32, and the second end of the pull cord 33 is fixed to the refrigerator housing or another fixed component. The motor 31 drives the winding reel 32 to rotate to wind or release the pull cord 33. The motor 31 drives the winding reel 32 to rotate. When the winding reel 32 rotates, it winds or releases the pull cord 33, thereby tightening or loosening the pull cord 33. When the pull cord 33 is tightened, it causes the slider 221 to slide upward. The upward sliding of the slider 221 drives the shelf body 10 to lift.

[0055] The pulley 222 is suspended on the pull rope 33. When the pull rope 33 is wound around the winding wheel 32, the pull rope 33 drives the pulley 222 to move upward. Since the pulley 222 is fixed on the slider 221, it can drive the slider 221 to move upward, and the shelf body 10 moves synchronously with the slider 221, so that the pull rope 33 can pull the shelf body 10 to move upward.

[0056] When the motor 31 controls the winding wheel 32 to release, the shelf body 10 is freed from the upward tensile force of the pull rope 33 and moves downward under the action of its own gravity, thereby achieving downward movement adjustment of the shelf body 10.

[0057] In this embodiment, the coordination of the motor 31, the winding wheel 32, and the pull cord 33 enables automatic raising and lowering of the shelf body 10, allowing for flexible adjustment based on actual needs. This eliminates the need to clean items during adjustment, making it more convenient to use. Furthermore, the pulley 222 is configured to move in conjunction with the slider 221 that drives the shelf body 10. The pulley 222, hooked on the pull cord 33, functions as a movable pulley 222, enabling the motor 31 to move the shelf body 10 with less driving force, thereby reducing the torque of the motor 31 and thereby lowering costs.

[0058] Reference Figure 5 Because the pulley 222 is located on the side of the main plate 2211 facing away from the slide rail 214, it is not connected to the support frame 21. Even if the shelf body 10 tilts due to a heavy load, the pulley 222 will not interfere with the support frame 21 or the slide rail 214. Therefore, the height adjustment of the shelf will not cause any problems such as jamming. Furthermore, the pull cord 33 is unlikely to interfere with the main plate 2211 and the slider 221 during movement, ensuring smooth height adjustment of the shelf body 10.

[0059] Reference Figure 7The slider 221 also includes a third protrusion 2218 vertically connected to the second connecting ear plate 2217. The third protrusion 2218 extends toward the first connecting ear plate 2215. The third protrusion 2218 is located below the pulley 222, and a gap is left between the third protrusion 2218 and the pulley 222 for the pull rope 33 to pass through. The third protrusion 2218 can limit the pull rope 33 to prevent the pull rope 33 from being separated from the pulley 222, so as to ensure smooth adjustment of the shelf body 10.

[0060] The support frame 21 and slider 221 are both integrally formed. Depending on the material of the support frame 21 and slider 221, different production methods can be used. If the support frame 21 and slider 221 are made of metal, casting or bending is typically used. If the support frame 21 and slider 221 are made of PVE, injection molding is typically used. The integrally formed support frame 21 and slider 221 structure reduces processing difficulty and production costs, and the number of components is reduced, making assembly simpler and faster.

[0061] Reference Figure 4 The support frame 21 also has an upper limit block 23 and a lower limit block 24 set on the slide rail 214 and arranged in the vertical direction. The slider 221 slides between the upper limit block 23 and the lower limit block 24. The upper limit block 23 and the lower limit block 24 can be fixed to the second side plate 212 by screws, bolts, etc.

[0062] Refer again Figure 9 Both the upper and lower stoppers 23 and 24 have engaging portions 241 that match the shape and size of the cross-section of the slide rail 214. The engaging portions 241 are embedded in the ends of the slide rail 214. The engaging portions 241 block and limit the upper and lower ends of the slide rail 214, thereby confining the slider 22 within the slide rail 214. The side of the engaging portion 241 facing the slider 221 is formed as an arc surface corresponding to the shape and size of the roller 223. When the slider 221 drives the roller 223 to move up and down and contact the stopper, the engaging portion 241 can better fit the shape of the roller 223, thereby better limiting the slider 22.

[0063] It should be noted that in this embodiment, two support frames 21 and two sliding members 22 are provided, corresponding to the two inner side walls of the refrigerator liner, and the shelf body 10 is connected between the two sliding members 22. Accordingly, the drive mechanism 30 is provided with two pull ropes 33, each of which is used to suspend a corresponding pulley 222, and the winding wheel 32 simultaneously controls the winding or release of the two pull ropes 33.

[0064] The number of the above-mentioned support frame 21 and sliding member 22 can of course be one or more, and can be specifically designed according to the actual size and shape of the refrigerator inner tank. This embodiment does not specifically limit the installation position and number of the support frame 21 and sliding member 22.

[0065] In this embodiment, corresponding pull cords 33 are fixed to both ends of the shelf body 10. The two pull cords 33 are mounted on the same winding wheel 32. When the winding wheel 32 rotates, it can simultaneously wind or release the two pull cords 33. This structural arrangement can achieve synchronous lifting of the shelf body 10 while also reducing the use of parts.

[0066] Of course, in an optional embodiment, two motors 31 may be provided to control the corresponding pull ropes 33 respectively, so as to realize the control of the lifting and lowering of the shelf body 10 when the pull ropes 33 are controlled to move.

[0067] It is easy to understand that in optional embodiments, the driving mechanism can be implemented using other transmission structures.

[0068] For example, a rack and pinion structure can be used to pull and release the drawstring. Specifically, the drive mechanism includes a motor, a gear connected to the motor, and a rack meshing with the gear. The drawstring and rack are fixedly connected, and a limiting guide structure can be provided in the refrigerator body to provide linear displacement for the rack. The motor drives the gear to rotate, which meshes with the rack. The movement of the rack drives the drawstring to adjust the height of the shelf. Accordingly, the rack is provided with two corresponding drawstrings.

[0069] Another example is the use of a screw-nut structure to achieve the pulling and releasing of the pull rope. Specifically, the drive mechanism includes a motor and two sets of transmission components. The transmission components include a screw connected to the motor, a nut threaded with the screw, and a pull block connected to the nut. The pull rope is fixedly connected to the pull block. A limiting structure can be provided inside the refrigerator body to limit the linear movement of the nut and the pull block. The motor drives the screw to rotate. Under the action of the limiting structure, the nut drives the pull block to move in the linear direction, thereby driving the movement of the pull rope to adjust the height of the shelf body. Of course, the motor can use a mechanical transmission structure to simultaneously drive the rotation of two gears, or two motors can be provided accordingly.

[0070] An embodiment of the present invention provides a refrigerator (not shown in the figures), comprising the shelf body described in any one of the above embodiments.

[0071] The refrigerator further includes a box body, in which the shelf body is arranged; and the slide rails are vertically arranged on the inner wall of the box body.

[0072] In this embodiment, the automatic lifting and lowering adjustment of the shelf body is achieved through the cooperation of the motor and the pull rope, and the user can adjust the height of the shelf according to storage needs.

[0073] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the scope of implementation of the present invention is not limited to what is shown in the drawings. Any changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which do not exceed the spirit covered by the description and drawings, should be within the scope of protection of the present invention.

Claims

1. A shelf assembly, characterized in that: include: The shelf body (10) comprises a first end and a second end disposed opposite to the first end; A driving mechanism (30) comprises a motor (31), a winding wheel (32), and a pull rope (33), wherein one end of the pull rope (33) is fixed to the winding wheel (32), and the other end is used to be fixed to the refrigerator body, and the motor (31) drives the winding wheel (32) to rotate to wind or release the pull rope (33); A sliding mechanism (20) comprises a support frame (21) for connecting to a refrigerator liner, a sliding member (22) slidably matched with the support frame (21), a slide rail (214) is provided on the support frame (21) along the up and down directions, the shelf body (10) is fixed to the slide rail (22), the slide member (22) comprises a slider (221) connected to a first end of the shelf body (10), a pulley (222) rotating on the slider (221), and a roller (223) rolling matched with the slide rail (214), the rotation axes of the pulley (222) and the roller (223) being perpendicular to the distribution direction of the first end and the second end, and the rotation axes of the pulley (222) and the roller (223) being parallel to the shelf body (10); The pulley (222) is suspended on the pull rope (33) so as to move in an up and down direction under the drive of the pull rope (33).

2. The shelf assembly according to claim 1, wherein: The support frame (21) includes a first side plate (211) and a second side plate (212) connected to each other. The slide rail (214) includes a first convex plate (2141) fixed to the first side plate (211), a first bent plate (2142) fixed to the second side plate (212), and a second convex plate (2143) fixed to the first bent plate (2142). The first convex plate (2141) and the second convex plate (2143) are parallel to the second side plate (212). A gap is left between the first convex plate (2141) and the second convex plate (2143) for the connecting shaft of the roller (223) to pass through. The first convex plate (2141), the first side plate (211), the second side plate (212), the first bent plate (2142) and the second convex plate (2143) enclose a space for the roller (223) to roll in the up and down directions.

3. The shelf assembly according to claim 2, wherein: The slider (221) includes a main plate (2211) parallel to the second side plate (212), and a mounting portion arranged on the main plate (2211); the roller (223) is rotatably connected to the side of the main plate (2211) facing the slide rail (214); the pulley (222) is rotatably connected to the mounting portion, and the pulley (222) is arranged on the side away from the slide rail (214).

4. The shelf assembly according to claim 3, wherein: The outer peripheral side of the roller (223) extends to the outer edge of the main plate (2211) toward the first side plate (211).

5. The shelf assembly according to claim 3, wherein: The mounting portion includes a first connecting ear plate (2215) extending upward in the vertical direction along the main body plate (2211), a third bending plate (2216) fixed to the first connecting ear plate (2215), and a second connecting ear plate (2217) fixed to the third bending plate (2216), wherein the third bending plate (2216) extends in a direction away from the slide rail (214), and the first connecting ear plate (2215) and the second connecting ear plate (2217) are spaced apart to form a space for installing the pulley (222).

6. The shelf assembly according to claim 5, wherein: The second connecting ear plate (2217) is connected to a third convex plate (2218) extending to the bottom of the pulley (222), and a gap is left between the third convex plate (2218) and the pulley (222) for the pull rope (33) to pass through.

7. The shelf assembly according to claim 3, wherein: The slider (221) further includes a second bent plate (2212) fixed to the main body plate (2211) and a connecting plate (2213) fixed to the second bent plate (2212), wherein the second bent plate (2212) extends in a direction away from the second side plate (212), and the connecting plate (2213) extends in a direction away from the first side plate (211), and the first end of the shelf body (10) is fixedly connected to the connecting plate (2213).

8. The shelf assembly according to claim 1, wherein: The support frame (21) further comprises an upper limit block (23) and a lower limit block (24) which are arranged on the slide rail (214) and arranged in the vertical direction, and the slider (221) slides between the upper limit block (23) and the lower limit block (24); The upper limit block (23) and the lower limit block (24) both have an engaging portion (241) engaged with the slide rail (214), and the engaging portion (241) is configured as an arc surface that matches the shape of the roller (223) on one side facing the slider (221).

9. The shelf assembly according to any one of claims 1 to 8, characterized in that: The sliding mechanism (20) is provided with two groups distributed in the horizontal direction, the shelf body (10) is fixed between the two sliders (221), the pull rope (33) is provided with two corresponding to the pulleys (222), and the winding wheel (32) is connected to the two pull ropes (33) to simultaneously control the winding or release of the two pull ropes (33).

10. A refrigerator, comprising a housing, characterized in that: The box body is provided with a shelf assembly according to any one of claims 1 to 9.

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