Shelf assembly and refrigerator

Abstract

The application discloses a shelf assembly and a refrigerator, wherein the shelf assembly comprises a support frame, a shelf plate, an ascending transmission mechanism, a descending transmission mechanism and a plurality of lifting mechanisms, the shelf plate is installed on the support frame, the lifting mechanism is provided with a lifting rod and a fixing seat, the lifting rod is rotatably abutted against the support frame, the lifting rod is threadedly connected to the fixing seat and can be lifted relative to the fixing seat, the plurality of lifting rods are driven through a transmission member, the ascending transmission mechanism is used for driving the lifting rod to rotate in one direction along a first direction, and the descending transmission mechanism is used for driving the lifting rod to rotate in one direction along a second direction. The application can reciprocally push the ascending transmission mechanism or the descending transmission mechanism in a smaller distance range, realizes the height adjustment of the shelf plate in a larger range, improves the convenience of use, is favorable for reducing the operation space required by the height adjustment of the shelf plate and reducing the occupation of the shelf assembly to the space of the inner container of the refrigerator.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and in particular to a shelf assembly and a refrigerator. Background Technology

[0002] In related technologies, refrigerator compartments typically have multiple shelves for storing items. Since the height of stored items varies, shelf height adjustment is necessary. Traditional refrigerators use adjustable liner ribs on the refrigerator liner, requiring items to be removed, the shelf pulled out, and then placed on the appropriate liner height – a very inconvenient process. To address this, some refrigerators now use height-adjustable shelves. However, adjusting the shelf height requires moving the adjustment handle from one end of the refrigerator compartment to the other. During this movement, the handle is easily obstructed by items inside the compartment, preventing further adjustment. Therefore, the adjustable shelf height is limited by the maximum range of the adjustment handle, resulting in inconvenient shelf adjustment. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a shelf assembly that can reciprocate a transmission mechanism within a small distance range to achieve a wide range of shelf height adjustment.

[0004] The present invention also provides a refrigerator having the above-described shelf assembly.

[0005] A shelf assembly according to a first aspect of the present invention includes:

[0006] Support frame;

[0007] Shelf, mounted on the support frame;

[0008] Multiple lifting mechanisms are provided, and the multiple lifting mechanisms jointly support the support frame. Each lifting mechanism is provided with a lifting rod and a fixed seat. The lifting rod is rotatably abutted against the support frame. The fixed seat is used to fix and connect to the inner liner of the refrigerator. The lifting rod is threaded to the fixed seat and can be raised and lowered relative to the fixed seat to drive the support frame to rise and fall. The multiple lifting rods are transmitted to each other through a transmission component.

[0009] An upward transmission mechanism is provided on the support frame for unidirectionally driving the lifting rod, and the driving direction is a first direction;

[0010] A descent transmission mechanism is provided on the support frame for unidirectionally driving the lifting rod, and the driving direction is the second direction;

[0011] One of the first direction and the second direction is a clockwise direction, and the other is a counterclockwise direction.

[0012] The shelf assembly according to the first aspect of the present application has at least the following beneficial effects:

[0013] When the height of the shelf needs to be adjusted, the user can push the lifting transmission mechanism or the lowering transmission mechanism, so that the lifting rod rotates to rise or fall relative to the fixed seat, and then drives the support frame to rise or fall, so that the shelf installed on the support frame can be adjusted to the required height position. Since the lifting transmission mechanism and the lowering transmission mechanism are both one-way transmission mechanisms, when the lifting transmission mechanism or the lowering transmission mechanism is pushed in the corresponding driving direction, the lifting rod can be driven to rotate to lift the shelf by a certain distance. Then the lifting transmission mechanism or the lowering transmission mechanism can be pushed in the reverse direction, at which time the lifting rod cannot be rotated. Therefore, the lifting transmission mechanism or the lowering transmission mechanism can be pushed in the reverse direction to the original position, and then the lifting transmission mechanism or the lowering transmission mechanism can be pushed in the driving direction again to continue lifting the shelf. Through repeated operations, the shelf can be lifted to the appropriate height position. Therefore, the lifting transmission mechanism or the lowering transmission mechanism can be reciprocally pushed in a small distance range, the height of the shelf can be adjusted in a large range, the convenience of use is improved, the operation space required for adjusting the height of the shelf is reduced, and the space occupied by the shelf assembly in the inner tank of the refrigerator is reduced.

[0014] According to some embodiments of the present application, at least one of the lifting transmission mechanism and the lowering transmission mechanism is a ratchet mechanism, which includes a driving gear, a driven gear, and a pawl. The driven gear is engaged with the lifting rod. The driving gear is rotatably installed on one side of the driven gear in the axial direction. The driving gear rotates in the driving direction to push the driven gear to rotate in one direction through the pawl.

[0015] According to some embodiments of the present application, the driven gear is provided with an installation groove and a driving groove in communication. The driving gear is accommodated in the installation groove. An elastic member is installed in the driving groove. One end of the pawl is rotatably connected to the inner wall of the installation groove. The other end of the pawl is connected to the elastic member. The elastic member can push the pawl to extend into the installation groove and abut against the tooth portion of the driving gear. The groove wall of the driving groove is provided with a driving wall for blocking the pawl from rotating in the driving direction of the driving gear.

[0016] According to some embodiments of the present application, the driving gear includes a first driving wheel and a second driving wheel distributed in the axial direction. The first driving wheel is used to receive driving force. The second driving wheel is located in the installation groove to drive the driven gear.

[0017] According to some embodiments of the present application, the support frame is provided with a mounting shaft, and the driving gear and the driven gear are rotatably mounted on the mounting shaft.

[0018] According to some embodiments of the present application, a bottom wall of the mounting groove is provided with a cylindrical boss, the cylindrical boss is provided with a through hole for the mounting shaft to pass through, and the driving gear is provided with a recess matched with the cylindrical boss.

[0019] According to some embodiments of the present application, the ratchet mechanism further comprises a sliding member, the sliding member is slidingly mounted on the support frame and is in meshing connection with the driving gear.

[0020] According to some embodiments of the present application, the sliding member comprises a body portion and a rack portion, the rack portion is connected to one side of the body portion, the support frame is provided with a stop edge, and the rack portion is slidingly arranged on the stop edge and is in meshing connection with the driving gear.

[0021] According to some embodiments of the present application, the stop edge is provided with a first protruding portion, and the first protruding portion is located on a side of the stop edge facing the rack portion.

[0022] According to some embodiments of the present application, the body portion is provided with a second protruding portion, and the second protruding portion is located on a side of the body portion facing the stop edge.

[0023] According to some embodiments of the present application, the body portion is provided with a handle, and the handle is located on a side of the body portion away from the rack portion.

[0024] According to some embodiments of the present application, a transmission ratio of the driven gear to the lifting rod is less than 1.

[0025] According to some embodiments of the present application, the lifting transmission mechanism and the lowering transmission mechanism are arranged on opposite sides of the support frame.

[0026] The refrigerator according to the second aspect of the embodiments of the present application comprises the shelf assembly according to the first aspect of the embodiments of the present application.

[0027] The refrigerator according to the second aspect of the embodiments of the present application has at least the following beneficial effects:

[0028] By arranging the shelf assembly according to the first aspect of the embodiments of the present application, the lifting transmission mechanism or the lowering transmission mechanism can be reciprocally pushed within a smaller distance range, the height of the shelf plate can be adjusted within a larger range, the convenience of use is improved, and the operation space required for adjusting the height of the shelf plate is reduced, thereby reducing the space occupied by the shelf assembly in the inner container of the refrigerator.

[0029] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and / or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0030] Additional aspects and advantages of the application will become apparent upon consideration of the following detailed description of embodiments of the application, when taken in conjunction with the accompanying drawings.

[0031] Figure 1 Structure diagram of shelf assembly for some embodiments of the application;

[0032] Figure 2 Structure diagram of shelf assembly for some embodiments of the application from another angle;

[0033] Figure 3 Structure diagram of shelf assembly for some embodiments of the application from another angle; Figure 2

[0034] Structure diagram of shelf assembly for some embodiments of the application from another angle (omitting shelf and part of support frame); Figure 4

[0035] Structure diagram of shelf assembly for some embodiments of the application from another angle (omitting shelf and part of support frame); Figure 5 Figure 4 Structure diagram of lifting transmission mechanism for some embodiments of the application (omitting sliding member);

[0036] Figure 6 Structure diagram of lifting transmission mechanism for some embodiments of the application (omitting sliding member);

[0037] Figure 7 Structure diagram of sliding member for some embodiments of the application;

[0038] Figure 8 Structure diagram of transmission gear for some embodiments of the application.

[0039] Figure 9 The reference signs are as follows:

[0040] Support frame 100; first side edge 110; stop edge 111; first protruding part 112; support leg 113; gap 114; limiting plate 115; mounting shaft 116; second side edge 120; third side edge 130;

[0041] Shelf 200;

[0042] Lifting mechanism 300; lifting rod 310; fixing seat 320; transmission member 330; tensioning wheel 340; tensioning structure 350;

[0043] Lifting mechanism 300; lifting rod 310; fixing seat 320; transmission member 330; tensioning wheel 340; tensioning structure 350;

[0044] ​Rising transmission mechanism 400; slider 410; body portion 411; rack portion 412; handle 413; rack structure 414; second protruding portion 415; transmission gear 420; first transmission wheel 421; second transmission wheel 422; driven gear 430; mounting slot 431; drive slot 432; drive wall 433; cylindrical boss 434; pawl 440; elastic member 450;

[0045] Lowering transmission mechanism 500. DETAILED DESCRIPTION

[0046] Embodiments of the present application are described in detail below with reference to the attached drawings, which show by way of example, embodiments in which the same or similar elements have the same or similar reference numbers. The embodiments described below are examples only, and are not to be construed as limiting the present application.

[0047] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by the upper, lower, front, rear, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0048] In the description of the present application, if there is a description of first, second, only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the order of technical features indicated.

[0049] In the description of the present application, unless otherwise explicitly limited, the words such as setting, mounting, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0050] The refrigeration chamber of a refrigerator is usually provided with multiple shelves for storing articles. Since the articles stored therein have different specifications, sometimes the articles are relatively high, and sometimes the articles are relatively low. Therefore, the height of the shelves needs to be adjusted to adapt to the height of the articles. In a conventional refrigerator, different levels of liner ribs are arranged on the inner liner. The shelves are installed on the liner ribs. When the height of the shelves needs to be adjusted, the articles on the shelves need to be removed, then the shelves are pulled out from the liner ribs, and then the shelves are placed on the liner ribs at the corresponding height, so as to realize the adjustment of the height of the shelves. However, the above-mentioned adjustment of the height of the shelves is very inconvenient. Therefore, some refrigerators currently use shelves that can be adjusted in height. When the height of the shelves needs to be adjusted, the adjustment handle needs to be moved from one end of the cavity of the refrigerator to the other end. During the movement of the adjustment handle, the adjustment handle is easily blocked by the articles placed in the cavity of the refrigerator, so that the adjustment handle cannot continue to move, and thus the height of the shelves cannot continue to be adjusted. Therefore, the height of the shelves that can be adjusted is limited by the maximum range of movement of the adjustment handle, and the adjustment of the shelves is inconvenient.

[0051] Therefore, the present application provides a shelf assembly. The shelf assembly can realize the adjustment of the height of the shelves in a large range by reciprocally pushing the transmission mechanism in a small range, and improves the convenience of the adjustment of the height of the shelves.

[0052] Referring to Figure 1 and Figure 2 The shelf assembly provided by the embodiments of the present application is arranged in the inner liner of a refrigerator, and includes a support frame 100, a shelf 200, a lifting mechanism 300, an upward transmission mechanism 400, and a downward transmission mechanism 500. The shelf 200 can be a glass plate, a plastic plate, or a plate body made of other materials. The shelf 200 is installed at the upper end of the support frame 100, and users can place articles to be refrigerated on the shelf 200. Specifically, the shelf 200 can be installed at the upper end of the support frame 100 by means of bolt connection or buckle connection.

[0053] Referring to Figure 4 and Figure 5The lifting mechanism 300 is provided in plurality, and the plurality of lifting mechanisms 300 are distributed at intervals to jointly support the support frame 100. Specifically, each lifting mechanism 300 is provided with a lifting rod 310 and a fixing seat 320. The lifting rod 310 is rotatably abutted to the bottom of the support frame 100, and the fixing seat 320 is fixedly installed on the inner container of the refrigerator by means of buckle connection or bolt connection. The middle part of the fixing seat 320 is provided with a threaded hole, and the outer wall of the lifting rod 310 is provided with a thread. The lifting rod 310 is screwed into the threaded hole, so that the lifting rod 310 can be lifted relative to the fixing seat 320 when rotating, thereby driving the support frame 100 to be lifted. The lifting rod 310 is further provided with a first gear part and a second gear part. The plurality of lifting rods 310 are synchronously driven by being wound around the respective first gear parts through a transmission member 330. The transmission member 330 can be a synchronous belt, a chain or other transmission structure. Hereinafter, the synchronous belt is taken as an example for description. Therefore, when one of the lifting rods 310 rotates, the synchronous belt can drive the other lifting rods 310 to rotate synchronously, so that the lifting of the support frame 100 as a whole is more stable. Of course, the transmission mechanism 400 can also be provided with a plurality of tensioning wheels 340. The synchronous belt is wound around the tensioning wheels 340. The tensioning wheels 340 can adjust the direction of the synchronous belt, so that the layout of the synchronous belt is more compact. In addition, the synchronous belt can also be provided with a tensioning structure 350. The tensioning degree of the synchronous belt can be adjusted through the tensioning structure 350, so that the synchronous belt can maintain appropriate tension to drive the lifting rod 310 to rotate.

[0054] The ascending transmission mechanism 400 and the descending transmission mechanism 500 are both one-way transmission mechanisms. They can be ratchet mechanisms, one-way bearing mechanisms or other one-way transmission mechanisms. They can all realize one-way driving of the rotation of the lifting rod 310, and cannot drive the rotation of the lifting rod 310 in the reverse direction. The driving direction of the ascending transmission mechanism 400 is the first direction, and the driving direction of the descending transmission mechanism 500 is the second direction. One of the first direction and the second direction is the clockwise direction, and the other is the counterclockwise direction.

[0055] Referring to Figure 6 The ascending transmission mechanism 400 is installed on the support frame 100 and connected with one of the lifting rods 310. When the ascending transmission mechanism 400 is pushed in the driving direction thereof, the ascending transmission mechanism 400 can drive the lifting rod 310 to rotate clockwise relative to the fixing seat 320 and ascend, thereby driving the support frame 100 and the shelf 200 to ascend. When the ascending transmission mechanism 400 is pushed in the direction opposite to the above driving direction, the ascending transmission mechanism 400 will idle and cannot drive the lifting rod 310 to rotate, so that the support frame 100 and the shelf 200 will not ascend or descend at this time.

[0056] Referring to Figure 7The descending transmission mechanism 500 is installed on the support frame 100, and the descending transmission mechanism 500 is connected with another lifting rod 310. When the descending transmission mechanism 500 is pushed in the driving direction, the descending transmission mechanism 500 can drive the lifting rod 310 to rotate counterclockwise to descend relative to the fixed base 320, thereby driving the support frame 100 and the shelf 200 to descend. When the descending transmission mechanism 500 is pushed in the direction opposite to the above driving direction, the descending transmission mechanism 500 will idle and cannot drive the lifting rod 310 to rotate, so that the support frame 100 and the shelf 200 will not ascend or descend at this time. Of course, the ascending transmission mechanism 400 can also drive the lifting rod 310 to rotate counterclockwise in one direction, and the descending transmission mechanism 500 can drive the lifting rod 310 to rotate clockwise in one direction. The specific driving direction of the ascending transmission mechanism 400 and the descending transmission mechanism 500 can be set according to actual needs.

[0057] When the height of the shelf 200 needs to be adjusted, the user can push the ascending transmission mechanism 400 or the descending transmission mechanism 500 to drive the lifting rod 310 to rotate to ascend or descend relative to the fixed base 320, thereby driving the support frame 100 to ascend or descend, so that the shelf 200 installed on the support frame 100 can be adjusted to the desired height position. Since the ascending transmission mechanism 400 and the descending transmission mechanism 500 are both one-way transmission mechanisms, when the ascending transmission mechanism 400 or the descending transmission mechanism 500 is pushed in the corresponding driving direction, the lifting rod 310 can be driven to rotate to ascend or descend the shelf 200 by a certain distance. Then the ascending transmission mechanism 400 or the descending transmission mechanism 500 can be pushed in the reverse direction, at which time the lifting rod 310 cannot be driven to rotate, so that the ascending transmission mechanism 400 or the descending transmission mechanism 500 can be pushed to the original position in the reverse direction, and then the ascending transmission mechanism 400 or the descending transmission mechanism 500 is pushed in the driving direction again to make the shelf 200 continue to ascend or descend. Through repeated operation, the shelf 200 can be adjusted to the appropriate height position. Therefore, the ascending transmission mechanism 400 or the descending transmission mechanism 500 can be pushed back and forth in a small distance range, the height of the shelf 200 can be adjusted in a large range, the use is convenient, the operation space required for adjusting the height of the shelf 200 is reduced, and the space occupied by the shelf assembly in the inner tank of the refrigerator is reduced.

[0058] Referring to Figure 6 and Figure 7It can be understood that in some embodiments of the present application, the ascending transmission mechanism 400 and the descending transmission mechanism 500 are both ratchet mechanisms, and both of the ratchet mechanisms comprise a transmission gear 420, a driven gear 430 and a pawl 440, the driven gear 430 is in meshing connection with the second gear part of the lifting rod 310, the transmission gear 420 is rotatably installed on one side of the driven gear 430 in the axial direction, and the rotation of the transmission gear 420 in the driving direction can push the driven gear 430 to rotate in one direction through the pawl 440. When it is necessary to adjust the height of the shelf 200, the transmission gear 420 is pushed in the corresponding driving direction, so that the transmission gear 420 pushes the driven gear 430 to rotate through the pawl 440, and then the driven gear 430 drives the lifting rod 310 to rotate to adjust the height of the shelf 200, which is very convenient to operate. In the above structure, the main difference between the ascending transmission mechanism 400 and the descending transmission mechanism 500 lies in the installation direction of the pawl 440. In the ascending transmission mechanism 400, the clockwise rotation of the transmission gear 420 can push the pawl 440 to drive the driven gear 430 to rotate, so as to make the lifting rod 310 rotate. In the descending transmission mechanism 500, the counterclockwise rotation of the transmission gear 420 can push the pawl 440 to drive the driven gear 430 to rotate, so as to make the lifting rod 310 rotate.

[0059] In the above embodiment, specifically, the driven gear 430 is provided with a mounting groove 431 and a driving groove 432, the driving groove 432 is located on the outer periphery of the mounting groove 431 and communicates with the mounting groove 431. The transmission gear 420 is at least partially accommodated in the mounting groove 431, and the driving groove 432 further has an elastic member 450 installed therein, one end of the pawl 440 is rotatably connected to the inner wall of the mounting groove 431, and the other end of the pawl 440 is connected to the elastic member 450. The elastic member 450 can be a compression spring or a torsion spring or a rubber member or an elastic metal sheet or the like structure. Under the elastic force of the elastic member 450, the pawl 440 extends into the mounting groove 431 and abuts against the tooth part of the transmission gear 420, and the groove wall of the driving groove 432 is provided with a driving wall 433 for blocking the rotation of the pawl 440 in the driving direction of the transmission gear 420. Therefore, when the transmission gear 420 rotates in the driving direction, the end of the pawl 440 pushed by the transmission gear 420 abuts against the driving wall 433, and the pawl 440 cannot rotate relative to the driven gear 430 due to the blocking of the driving wall 433, so the pawl 440 will drive the driven gear 430 to rotate with the transmission gear 420, and then the driven gear 430 drives the lifting rod 310 to rotate to realize the lifting of the shelf 200. When the transmission gear 420 reversely rotates, the end of the pawl 440 pushed by the transmission gear 420 is away from the driving wall 433, so that the pawl 440 is separated from the corresponding tooth of the transmission gear 420, and therefore the transmission gear 420 will idle and cannot drive the driven gear 430 to rotate.

[0060] With reference to Figure 5It can be understood that, in order to facilitate the installation of the driving gear 420 and the driven gear 430, the support frame 100 is provided with the mounting shaft 116 in some embodiments of the present application, and the driving gear 420 and the driven gear 430 are rotatably installed on the mounting shaft 116, so that the driving gear 420 and the driven gear 430 can be limited by the mounting shaft 116, and the driving gear 420 and the driven gear 430 are prevented from easily shaking.

[0061] With reference to Figure 6 and Figure 9 In the above embodiment, in order to make the installation of the driving gear 420 on one side of the driven gear 430 more stable, it can be understood that the bottom wall of the mounting groove 431 is further provided with a cylindrical boss 434, the middle part of the cylindrical boss 434 is provided with a through hole for the mounting shaft 116 to pass through, and the bottom of the driving gear 420 is provided with a sunken groove matched with the cylindrical boss 434. When the driving gear 420 is installed on the axial side of the driven gear 430, the cylindrical boss 434 is accommodated in the sunken groove, so that when the driving gear 420 rotates relative to the driven gear 430, the cylindrical boss 434 can play a limiting and guiding role, which is beneficial to reduce the shaking of the driving gear 420 relative to the driven gear 430.

[0062] With reference to Figure 3 and Figure 5 It can be understood that, in order to facilitate the rotation of the driving gear 420, the ratchet mechanism further comprises a sliding member 410 in some embodiments of the present application, and the sliding member 410 is slidably installed on the support frame 100 and is engaged with the driving gear 420. Therefore, when it is necessary to adjust the height of the shelf 200, the user can drive the driving gear 420 to rotate by pushing the sliding member 410, and then drive the driven gear 430 to rotate, so as to realize the lifting of the lifting rod 310, which is very convenient to operate. Of course, the user can also directly rotate the driving gear 420 by hand, which can also realize the lifting of the lifting rod 310, or by providing a rotatable lever, the driving gear 420 is driven to rotate by the lever, so as to realize the lifting of the lifting rod 310.

[0063] With reference to Figure 3 , Figure 5 and Figure 8It can be understood that, in some embodiments of the present application, the sliding member 410 comprises a body part 411 and a rack part 412, the rack part 412 is connected to one side of the body part 411, and the rack part 412 and the body part 411 form a bayonet towards the lower side. The support frame 100 is provided with a retaining edge 111, and the rack part 412 is slidably arranged on the retaining edge 111 and engaged with the transmission gear 420. Since the rack part 412 is arranged on the retaining edge 111 and can slide on the retaining edge 111, the retaining edge 111 can guide and support the rack part 412, so that the sliding of the rack part 412 is more stable, which is beneficial to reduce the shaking amplitude of the rack part 412 when sliding. Specifically, the support frame 100 comprises a base frame and a top cover, the retaining edge 111 is a side of the base frame, and the top cover covers the upper side of the base frame to form a cavity with the base frame, the transmission gear 420 is located in the cavity, and a long strip-shaped gap 114 is formed between the retaining edge 111 and the top cover, and the rack part 412 extends into the gap 114 and is arranged on the retaining edge 111. The side of the rack part 412 away from the body part 411 forms a rack structure 414, and the rack part 412 is engaged with the transmission gear 420 through the rack structure 414, and the body part 411 is located outside the gap 114, so that the user can push the body part 411 to move along the length direction of the gap 114, so that the rack part 412 slides on the retaining edge 111 to drive the transmission gear 420 to rotate.

[0064] With reference to Figure 8 It can be understood that, in order to facilitate the pushing of the body part 411, in some embodiments of the present application, the body part 411 is provided with a handle 413, and the handle 413 is located on the side of the body part 411 away from the rack part 412, so that the user can conveniently push the body part 411 to move through the handle 413, which is beneficial to improve the convenience of operation. It should be noted that when the user takes or puts the articles in the refrigerator, the hands may be wet, and it may be difficult to push the handle 413 when the hands are wet. Therefore, in order to further improve the convenience of operation, anti-skid stripes can be provided on the handle 413, so as to improve the friction of the handle 413, so that the user can hold the handle 413 more firmly even if the hands are wet, and then push the handle 413 to move, thereby improving the convenience of operation.

[0065] With reference to Figure 5It should be noted that when the rack portion 412 slides on the retaining edge 111, the rack portion 412 will be in contact with the inner side surface of the retaining edge 111 to generate friction. When the frictional resistance between the rack portion 412 and the retaining edge 111 is too large, the user needs to use a larger force to push the sliding piece 410 to slide on the support frame 100, which is inconvenient to operate and can easily cause the sliding piece 410 to slide not smoothly. Therefore, in some embodiments of the present application, the retaining edge 111 is provided with a first protruding portion 112, and the first protruding portion 112 is located on the side of the retaining edge 111 facing the rack portion 412. When the rack portion 412 slides on the retaining edge 111, the first protruding portion 112 can reduce the contact area between the rack portion 412 and the retaining edge 111, thereby facilitating the reduction of the frictional resistance between the sliding piece 410 and the support frame 100, and facilitating the improvement of the smoothness of the sliding of the sliding piece 410.

[0066] With reference to Figure 5 In the above embodiment, the first protruding portion 112 includes a plurality of semi-cylindrical structures, and the plurality of semi-cylindrical structures are arranged on the inner side surface of the retaining edge 111 in a spaced manner along the sliding direction of the rack portion 412. When the rack portion 412 slides on the retaining edge 111, the semi-cylindrical structures can play a good supporting role in the sliding process of the rack portion 412, thereby making the sliding of the rack portion 412 more stable and smooth, and enabling the rack portion 412 to maintain good meshing with the transmission gear 420. Moreover, when the plurality of semi-cylindrical structures support the rack portion 412, the contact area of each semi-cylindrical structure with the rack portion 412 is very small, so the overall contact area of the rack portion 412 and the retaining edge 111 can be greatly reduced, thereby further facilitating the reduction of the frictional resistance between the rack portion 412 and the retaining edge 111. Of course, the semi-cylindrical structure can also be a square column structure or a triangular prism structure, which can all reduce the contact area of the retaining edge 111 and the rack portion 412.

[0067] With reference to Figure 8It can be understood that when the rack portion 412 slides on the retaining edge 111, the body portion 411 also contacts the outer side of the retaining edge 111 to generate friction. Therefore, in some embodiments of the present application, the body portion 411 is further provided with a second protruding portion 415 located on the side of the body portion 411 facing the retaining edge 111. When the rack portion 412 slides on the retaining edge 111, the rack portion 412 contacts the inner side of the retaining edge 111 through the first protruding portion 112, and the body portion 411 contacts the outer side of the retaining edge 111 through the second protruding portion 415, so that the contact area between the sliding member 410 and the inner and outer sides of the retaining edge 111 is smaller, thereby further reducing the frictional resistance between the sliding member 410 and the support frame 100. Specifically, the structure of the second protruding portion 415 can adopt a similar structure to the first protruding portion 112, which also includes a plurality of semi-cylindrical structures arranged at intervals along the sliding direction of the sliding member 410, thereby further reducing the contact area between the body portion 411 and the retaining edge 111 and improving the smoothness of the sliding of the sliding member 410.

[0068] It can be understood that in order to enable the user to rotate the lifting rod 310 through the ratchet mechanism with less force during operation, thereby achieving labor-saving operation, in some embodiments of the present application, the transmission ratio of the driven gear 430 to the lifting rod 310 is less than 1, at this time the length of the force arm of the driven gear 430 is greater than the length of the force arm of the lifting rod 310, so that the transmission gear 420 can drive the lifting rod 310 to rotate with less force. During operation, the user can push the sliding member 410 with less force to drive the driven gear 430 to rotate through the transmission gear 420, thereby driving the lifting rod 310 to rotate, so that the operation is more labor-saving. For example, when the transmission ratio of the driven gear 430 to the lifting rod 310 is 2:5, compared with the scheme of directly driving the lifting rod 310 to rotate through the sliding member 410, the ratchet mechanism of the present embodiment can save about 60% of the force, of course, the transmission ratio of the driven gear 430 to the lifting rod 310 can also be set to other appropriate values according to actual needs.

[0069] Referring to Figure 9 It can be understood that in some embodiments of the present application, the transmission gear 420 includes a first transmission gear 421 and a second transmission gear 422 distributed in the axial direction, the first transmission gear 421 is engagedly connected with the sliding member 410, and the second transmission gear 422 is located in the mounting groove 431 for driving the driven gear 430, so that the sliding member 410 and the driven gear 430 can be arranged at intervals in the axial direction of the transmission gear 420, which is beneficial to improve the compactness of the overall structure of the ratchet mechanism. Specifically, the outer diameter of the second transmission gear 422 is smaller than the outer diameter of the first transmission gear 421, so as to facilitate the accommodation of the second transmission gear 422 in the mounting groove 431 of the driven gear 430.

[0070] With reference to Figure 1 and Figure 2 It can be understood that, in order to place more articles in the inner container, the inner container is usually provided with a plurality of shelf assemblies which divide the inner container into a plurality of inner container layer spaces. In order to minimize the influence of the support frame 100 on the inner container layer space, in some embodiments of the present application, the support frame 100 comprises a first side edge 110, a second side edge 120 and a third side edge 130, the first side edge 110 and the second side edge 120 are respectively connected to two ends of the third side edge 130, and an opening is formed between the first side edge 110 and the second side edge 120 towards the door body of the refrigerator. Specifically, the first side edge 110 and the second side edge 120 are arranged along the depth direction of the inner container, and the third side edge 130 is arranged along the length direction of the inner container. When the shelf 200 assembly is installed in the inner container of the refrigerator, the third side edge 130 is located at the rear side of the inner container, i.e. the third side edge 130 is located at the side of the inner container away from the door body of the refrigerator, and the first side edge 110 and the second side edge 120 are respectively located at the left side and the right side of the inner container, and the first side edge 110 and the second side edge 120 are respectively connected to two ends of the third side edge 130, so that an opening is formed between the first side edge 110 and the second side edge 120, and the opening is towards the door body of the refrigerator. At this time, the opening is located at the front side of the inner container, which can avoid the influence of the support frame 100 on the height of the inner container layer space below it, so the height of the inner container layer space below the front side of the shelf 200 will be relatively large, so that the user can place articles with a larger height in the inner container layer space, and because there is no support frame 100 below the front side of the shelf 200, the user can take and place articles more conveniently, and at the same time, the material usage of the support frame 100 can be reduced, which is beneficial to reduce the manufacturing cost of the support frame 100.

[0071] With reference to Figure 4 and Figure 5It can be understood that, in order to facilitate the installation of the lifting rod 310, in some embodiments of the present application, the first side 110 and the second side 120 are both provided with a support foot 113, which can be a semi-enclosed structure or a fully-enclosed structure, and the inside of the support foot 113 can be formed with a cavity, and the lifting rod 310 is rotatably installed in the inner cavity of the support foot 113 and abuts against the top wall of the support foot 113, so that the lifting rod 310 can be hidden, avoiding that foreign matters easily touch the lifting rod 310 and affect the lifting of the lifting rod 310. Specifically, the bottom wall of the support foot 113 is provided with a mounting plate, and the lower end of the lifting rod 310 is rotatably installed on the mounting plate, and the top wall of the support foot 113 is provided with a limiting plate 115, and the upper end of the lifting rod 310 is rotatably installed on the limiting plate 115, so that the support foot 113 can limit the lifting rod 310 through the mounting plate and the limiting plate 115, preventing the lifting rod 310 from moving axially relative to the support foot 113, so that when the lifting rod 310 rotates and rises or falls relative to the fixed seat 320, the support foot 113 also rises or falls with the lifting rod 310, so that the shelf 200 installed on the support frame 100 rises or falls, realizing the height adjustment of the shelf 200.

[0072] It can be understood that the lifting transmission mechanism 400 and the lowering transmission mechanism 500 can be arranged on opposite sides of the support frame 100, and at this time the sliding members 410 of the lifting transmission mechanism 400 and the lowering transmission mechanism 500 are respectively slidingly installed on the first side 110 and the second side 120, so that the height adjustment of the shelf 200 can be realized by pushing the sliding members 410 forward and backward. Of course, the lifting transmission mechanism 400 and the lowering transmission mechanism 500 can also be arranged on the rear side of the support frame 100, and at this time the sliding member 410 is slidingly installed on the third side 130, and the user can realize the height adjustment of the shelf 200 by pushing the sliding member 410 left and right. Of course, in order to reduce the influence of the sliding member 410 on taking and placing articles, the handle 413 of the sliding member 410 can also be arranged at the bottom of the corresponding side, so as to avoid the handle 413 protruding from the side surface of the side and affecting the taking and placing of articles.

[0073] The refrigerator of the second aspect embodiment of the present application comprises the shelf assembly of the first aspect embodiment of the present application. The shelf assembly is installed in the inner container of the refrigerator, and of course, a plurality of shelf assemblies can be provided, and the plurality of shelf assemblies are arranged at intervals along the height direction of the inner container, so as to divide the space of the inner container into a plurality of layer spaces, facilitating the user to place more articles in the inner container.

[0074] When the height of the shelf 200 needs to be adjusted, the user can push the lifting transmission mechanism 400 or the lowering transmission mechanism 500, so that the lifting rod 310 rotates to lift or lower relative to the fixed seat 320, and then drives the support frame 100 to rise or lower, so that the shelf 200 mounted on the support frame 100 can be adjusted to the required height position. Since the lifting transmission mechanism 400 and the lowering transmission mechanism 500 are both one-way transmission mechanisms, when the lifting transmission mechanism 400 or the lowering transmission mechanism 500 is pushed in the corresponding driving direction, the lifting rod 310 can be driven to rotate to lift the shelf 200 by a certain distance. Then the lifting transmission mechanism 400 or the lowering transmission mechanism 500 can be pushed in the reverse direction, at which time the lifting rod 310 cannot be driven to rotate, so that the lifting transmission mechanism 400 or the lowering transmission mechanism 500 can be pushed in the reverse direction to the original position, and then the lifting transmission mechanism 400 or the lowering transmission mechanism 500 is pushed in the driving direction again to make the shelf 200 continue to lift or lower. Through repeated operation, the shelf 200 can be lifted or lowered to the appropriate height position. Therefore, the lifting transmission mechanism 400 or the lowering transmission mechanism 500 can be reciprocally pushed in a small distance range, the height of the shelf 200 can be adjusted in a large range, the convenience of use is improved, the operation space required for adjusting the height of the shelf 200 is reduced, and the space occupied by the shelf assembly in the inner tank of the refrigerator is reduced.

[0075] The refrigerator of the second aspect embodiment of the present application, because it comprises the shelf assembly of the first aspect embodiment of the present application, can reciprocally push the lifting transmission mechanism 400 or the lowering transmission mechanism 500 in a small distance range, adjust the height of the shelf 200 in a large range, and is convenient for adjusting the height of the shelf 200, thereby improving the convenience of use of the refrigerator.

[0076] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the present application.

Claims

1. A shelving assembly characterized by, include: Support frame; Shelf, mounted on the support frame; Multiple lifting mechanisms are provided, and the multiple lifting mechanisms jointly support the support frame. Each lifting mechanism is provided with a lifting rod and a fixed seat. The lifting rod is rotatably abutted against the support frame. The fixed seat is used to fix and connect to the inner liner of the refrigerator. The lifting rod is threaded to the fixed seat and can be raised and lowered relative to the fixed seat to drive the support frame to rise and fall. The multiple lifting rods are transmitted to each other through a transmission component. An upward transmission mechanism is provided on the support frame for unidirectionally driving the lifting rod, and the driving direction is a first direction; A descent transmission mechanism is provided on the support frame for unidirectionally driving the lifting rod, and the driving direction is the second direction; One of the first direction and the second direction is clockwise, and the other is counterclockwise; At least one of the lifting transmission mechanism and the lowering transmission mechanism is a ratchet mechanism. The ratchet mechanism includes a transmission gear, a driven gear, and a pawl. The driven gear is meshed with the lifting rod. The transmission gear is rotatably mounted on one side of the driven gear along the axial direction, and the rotation of the transmission gear along the driving direction can drive the driven gear to rotate unidirectionally through the pawl. The driven gear is provided with a connected mounting groove and a driving groove. The transmission gear is housed in the mounting groove, and an elastic element is installed in the driving groove. One end of the pawl is rotatably connected to the inner wall of the mounting groove, and the other end of the pawl is connected to the elastic element. The elastic element can push the pawl into the mounting groove and abut against the teeth of the transmission gear. The groove wall of the driving groove is provided with a driving wall to prevent the pawl from rotating along the driving direction of the transmission gear.

2. The shelf assembly according to claim 1, characterized in that, The transmission gear includes a first transmission wheel and a second transmission wheel distributed along the axial direction. The first transmission wheel is used to receive the driving force, and the second transmission wheel is located in the mounting groove to drive the driven gear.

3. The shelf assembly according to claim 1, characterized in that, The support frame is provided with a mounting shaft, and both the transmission gear and the driven gear can be rotatably mounted on the mounting shaft.

4. The shelf assembly according to claim 3, characterized in that, The bottom wall of the mounting groove is provided with a cylindrical boss, the cylindrical boss is provided with a through hole for the mounting shaft to pass through, and the transmission gear is provided with a countersunk groove that mates with the cylindrical boss.

5. The shelf assembly according to claim 1, characterized in that, The ratchet mechanism also includes a slider, which is slidably mounted on the support frame and meshes with the transmission gear.

6. The shelf assembly according to claim 5, characterized in that, The sliding member includes a body and a rack. The rack is connected to one side of the body. The support frame is provided with a stop. The rack is slidably mounted on the stop and meshes with the transmission gear.

7. The shelf assembly according to claim 6, characterized in that, The retaining edge is provided with a first protrusion, which is located on the side of the retaining edge facing the rack portion.

8. The shelf assembly according to claim 6, characterized in that, The main body is provided with a second protrusion, which is located on the side of the main body facing the guard edge.

9. The shelf assembly according to claim 6, characterized in that, The main body is provided with a handle, which is located on the side of the main body opposite to the rack portion.

10. The shelf assembly according to claim 1, characterized in that, The transmission ratio between the driven gear and the lifting rod is less than 1.

11. The shelving assembly according to any one of claims 1 to 10, characterized in that, The lifting transmission mechanism and the lowering transmission mechanism are located on opposite sides of the support frame.

12. A refrigerator, characterized in that, Includes the shelf assembly as described in any one of claims 1 to 11.

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