A refrigerator

Abstract

The application relates to the technical field of refrigeration equipment, and specifically discloses a refrigerator, which comprises a cabinet, a shelf assembly, a lifting mechanism, a handle and a transmission assembly. The shelf assembly is slidably connected to a first supporting rod. The handle is rotationally arranged on the shelf assembly. The transmission assembly is arranged between the handle and the shelf assembly. When the handle rotates in a first rotating direction, the transmission assembly can drive the shelf assembly to ascend relative to the first supporting rod. When the handle rotates in a second rotating direction, the transmission assembly can drive the shelf assembly to descend relative to the first supporting rod. The handle comprises a handle body and a stop portion. The stop portion is movably connected with the handle body, so that the stop portion can be switched between a storage state and an extended state. When the stop portion is in the storage state, the handle can rotate in the first rotating direction and the second rotating direction. When the stop portion is in the extended state, the stop portion can abut against the shelf assembly to prevent the handle from rotating in the second rotating direction.

Description

Technical Field

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

[0002] Refrigerators are a common household appliance, and as people's living standards improve, the demand for large-capacity refrigerators is increasing. To accommodate the needs of storing items of different sizes and to improve the utilization of internal space, refrigerators are equipped with multiple shelves for storing food.

[0003] In related technologies, a lifting structure for adjusting the height of a shelf needs to lock the shelf at the current height after the shelf height is adjusted. However, the shelf is limited by multiple densely arranged locking parts designed along the extension direction of the rack, which engage with the locking teeth located at different height positions to lock or unlock the lifting action of the shelf. This design method results in a relatively large overall volume of the lifting structure, which occupies too much space in the cabinet and reduces the internal volume of the cabinet. Summary of the Invention

[0004] This application discloses a refrigerator that optimizes the structure of existing refrigerators and solves the problem that the lifting structure is relatively large due to the setting of a separate locking component, which occupies too much space inside the refrigerator and reduces the internal volume of the refrigerator.

[0005] To achieve the above objectives, some embodiments of this application provide a refrigerator, including:

[0006] A housing having a storage compartment and a front opening communicating with the storage compartment;

[0007] A door is disposed at the front opening of the housing and is configured to open or close the front opening of the housing;

[0008] A cooling device for cooling the storage compartment;

[0009] A shelf assembly for holding items;

[0010] A lifting mechanism, used to adjust the height of the shelf assembly, the lifting mechanism comprising:

[0011] A first support rod is vertically disposed within the storage chamber, and the shelf assembly is slidably connected to the first support rod;

[0012] A handle, which is rotatably mounted on the shelf assembly;

[0013] A transmission assembly is disposed between the handle and the shelf assembly. The transmission assembly is configured such that when the handle is rotated in a first rotation direction, the transmission assembly can drive the shelf assembly to rise relative to the first support rod, and when the handle is rotated in a second rotation direction, the transmission assembly can drive the shelf assembly to fall relative to the first support rod, wherein the second rotation direction is opposite to the first rotation direction.

[0014] The handle includes:

[0015] handle body;

[0016] A stop portion is movably connected to the handle body so that the stop portion can switch between a retracted state and an extended state.

[0017] When the stop is in the retracted state, the handle can rotate in the first rotation direction and can rotate in the second rotation direction;

[0018] When the stop is in the extended state, the stop can abut against the shelf assembly to prevent the handle from rotating in the second rotation direction.

[0019] Thus, by abutting the stop of the handle in the extended state against the shelf assembly, the shelf assembly is locked after being moved to the appropriate height. The unlocking and locking functions are integrated into the handle. The handle can not only raise and lower the shelf assembly, but also lock it after it has moved. This avoids the need for a separate locking structure to lock the shelf assembly after it has moved. This makes the lifting mechanism 3 simple in structure, small in size, and occupies less space in the storage room, thereby increasing the space for placing items in the storage room and improving the space utilization of the storage room.

[0020] In some embodiments of this application, the stop portion is rotatably connected to the handle body, and the handle body further includes:

[0021] A gripping part, which is connected to the stop part and can rotate with the stop part;

[0022] When the stop part is rotated to the retracted state, the grip part extends out of the handle body;

[0023] When the stop part rotates to the extended state, the grip part retracts into the handle body.

[0024] Thus, when the height of the shelf assembly needs to be adjusted, the stop rotates to the retracted state, at which point the grip extends from the handle body. The user can rotate the handle by holding the grip and turning it, thereby adjusting the height of the shelf assembly. There is a comfortable grip point when turning the handle, which improves the stability and accuracy of operation.

[0025] Once the height of the shelf assembly is adjusted, the stop rotates to the extended position. At this time, the grip retracts into the handle body, meaning the user cannot hold the grip and therefore cannot easily turn the handle. The stop abuts against the shelf assembly, locking the height of the shelf assembly while ensuring the handle does not rotate.

[0026] In some embodiments of this application, the grip portion is perpendicular to the stop portion, and the connection between the grip portion and the stop portion is hinged to the handle body.

[0027] Thus, the vertical design of the grip and stop makes it easier for users to grasp and apply force, and is more ergonomic when holding the handle, reducing hand fatigue and discomfort. The hinged connection allows the grip and stop to rotate relative to the handle body, increasing operational flexibility. Users can adjust the angle and position of the handle as needed to adapt to different operating environments and task requirements.

[0028] In some embodiments of this application, the length of the grip portion is greater than the length of the stop portion.

[0029] Thus, the longer grip provides users with a larger gripping area, making operation more comfortable and reducing hand fatigue. At the same time, the larger gripping area also means that users can control the handle more stably, improving operational accuracy and safety. Because of the longer grip, users can generate greater torque when turning the handle, making it easier to overcome resistance and raise or lower the shelf assembly.

[0030] In some embodiments of this application, the transmission assembly includes:

[0031] A first transmission rod is connected to the handle and can rotate with the handle;

[0032] The second transmission rod is arranged perpendicularly to the first transmission rod;

[0033] A first transmission structure is disposed between the first transmission rod and the second transmission rod, and the first transmission structure is used to convert the rotation of the first transmission rod into the rotation of the second transmission rod;

[0034] A second transmission structure is disposed between the second transmission rod and the first support rod. The second transmission structure is used to convert the rotation of the second transmission rod into the sliding of the shelf assembly relative to the first support rod.

[0035] In this way, the rotation of the handle is transmitted from the first transmission rod to the second transmission rod through the first transmission structure and the rotation of the second transmission rod drives the shelf assembly to slide relative to the first support rod.

[0036] In some embodiments of this application, the first transmission structure includes:

[0037] A worm gear portion, wherein the worm gear portion is disposed on the first transmission rod;

[0038] A worm gear is disposed on the second transmission rod, and the worm meshes with the worm gear portion.

[0039] Thus, due to the high precision of the meshing between the worm and worm wheel, efficient energy transfer is ensured during the transmission from the first drive rod to the second drive rod, reducing energy loss. Furthermore, the worm gear drive can achieve a large transmission ratio, allowing the transmission assembly to provide greater torque to drive the movement of shelving assemblies carrying a large number of items.

[0040] In some embodiments of this application, the second transmission structure includes:

[0041] A first rack portion is disposed vertically on the first support rod;

[0042] A first transmission gear is disposed on the shelf assembly and fixedly connected to the second transmission rod, and the first transmission gear meshes with the first rack portion.

[0043] In this way, the meshing of the first rack and the first transmission gear ensures a stable transmission ratio, allowing for precise control of the lifting height of the shelf assembly. Furthermore, the continuous meshing of the first rack and the first transmission gear ensures that the shelf assembly maintains accurate positioning throughout the lifting process, preventing misalignment or swaying caused by transmission errors.

[0044] In some embodiments of this application, the lifting mechanism further includes:

[0045] The second support rod is arranged at intervals with the first support rod along a first horizontal direction, and both the second support rod and the first support rod are slidably connected to the shelf assembly.

[0046] The transmission assembly also includes:

[0047] A third transmission structure is disposed between the second transmission rod and the second support rod. The third transmission structure converts the rotation of the second transmission rod into sliding of the shelf assembly relative to the second support rod. The third transmission structure includes:

[0048] The second rack portion is disposed vertically on the second support rod;

[0049] The second transmission gear is disposed on the shelf assembly and fixedly connected to the second transmission rod, and the second transmission gear meshes with the second rack portion.

[0050] In this way, the first and second support rods provide a stable foundation for the shelving assembly, enhancing its stability during lifting and lowering. When the second transmission rod rotates, the second and third transmission structures can operate simultaneously, causing the shelving assembly to rise or fall at the same time. This avoids the risk of items falling from the shelving assembly due to tilting during lifting and lowering.

[0051] In some embodiments of this application, the lifting mechanism further includes:

[0052] A constant force spring, the fixed end of which is connected to the first support rod and located above the shelf assembly, the free end of which extends downward and is connected to the shelf connecting seat, the constant force spring being used to provide a constant tension to the shelf assembly.

[0053] Thus, the constant-force spring can provide a constant force within a given range of compression or tension. Whether the spring is compressed or stretched, the tension it provides remains relatively stable and does not fluctuate significantly with changes in deformation. This allows the shelving assembly to remain smooth during lifting and lowering, avoiding sudden descent or shaking. Furthermore, the constant tension of the constant-force spring helps enhance the stability of the lifting mechanism. During the lifting and lowering of the shelving assembly, the constant-force spring provides a stable supporting force, ensuring that the shelving assembly remains stable at different heights, thereby improving the stability of the entire system.

[0054] In some embodiments of this application, the shelf assembly includes:

[0055] A shelf connecting seat is slidably connected to the first support rod, and a handle is rotatably disposed on the side of the shelf connecting seat near the front opening of the box body;

[0056] A shelf, which is disposed on the shelf connecting seat, is used to place items, and extends from the edge of the shelf near the front opening of the box in the direction of the storage room towards the front opening of the box.

[0057] When the stop is in the extended state, the stop abuts against the edge of the shelf near the front opening of the box.

[0058] Thus, the handle is positioned on the side of the shelf connector near the front opening of the refrigerator body, allowing users to easily reach and operate it without entering the storage compartment. This improves operational convenience and reduces inconvenience during operation. When the stop is extended, it abuts against the edge of the shelf near the front opening of the refrigerator body, making the abutment state clearly visible to the user. This ensures effective contact between the stop and the shelf, preventing accidental descent and improving the safety of refrigerator use.

[0059] In some embodiments of this application, the shelf includes:

[0060] A panel for holding items;

[0061] A panel support is provided around the outer periphery of the panel, and the upper surface of the panel support is higher than the upper surface of the panel.

[0062] This design prevents liquid from spilling onto other parts of the refrigerator when there is liquid on the panel, keeping the interior clean. Furthermore, the panel supports surrounding the panel form a stable support frame, enhancing the overall structural stability of the shelves and enabling them to withstand greater weight and pressure without easily deforming or being damaged.

[0063] Compared with the prior art, the beneficial effects of this application are at least as follows:

[0064] This application provides a refrigerator, comprising: a cabinet having a storage compartment and a front opening communicating with the storage compartment; a door disposed at the front opening of the cabinet, the door being configured to open or close the front opening of the cabinet; a cooling device for cooling the storage compartment; a shelf assembly for placing items; and a lifting mechanism for adjusting the height of the shelf assembly, the lifting mechanism comprising: a first support rod disposed vertically within the storage compartment, the shelf assembly being slidably connected to the first support rod; a handle rotatably disposed on the shelf assembly; and a transmission assembly disposed between the handle and the shelf assembly, the transmission assembly being configured to, when the handle rotates in a first rotation direction... The transmission component can drive the shelf assembly to rise relative to the first support rod. When the handle rotates in the second rotation direction, the transmission component can drive the shelf assembly to fall relative to the first support rod. The second rotation direction is opposite to the first rotation direction. The handle includes: a handle body; a stop part, which is movably connected to the handle body so that the stop part can switch between a retracted state and an extended state. When the stop part is in the retracted state, the handle can rotate in the first rotation direction and can rotate in the second rotation direction. When the stop part is in the extended state, the stop part can abut against the shelf assembly to prevent the handle from rotating in the second rotation direction. In this way, when the handle is turned in the first rotation direction, the stop part of the handle is in the retracted state, and the shelf assembly can rise under the rotation of the handle. When the shelf assembly moves to a certain height, the stop part of the handle is in the extended state, and the stop part abuts against the shelf assembly at this time, preventing the handle from rotating in the second rotation direction. This achieves the goal of locking the shelf assembly at the current height and preventing it from falling. The stop part of the handle achieves the locking of the shelf assembly after the height is adjusted, eliminating the need for a separate locking device to lock the height of the shelf assembly. This reduces the size of the lifting mechanism, making the lifting mechanism occupy less space in the storage room, and thus increasing the volume of items that can be placed in the storage room. Attached Figure Description

[0065] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0066] Figure 1 This is a schematic diagram of the structure of the refrigerator disclosed in the embodiments of this application;

[0067] Figure 2 This is a schematic diagram of the lifting mechanism disclosed in an embodiment of this application from one perspective;

[0068] Figure 3 This is a schematic diagram of the lifting mechanism disclosed in the embodiments of this application from another perspective;

[0069] Figure 4 This is a schematic diagram of the handle (with the stop portion in a retracted state) disclosed in an embodiment of this application;

[0070] Figure 5 This is a top view of the handle (with the stop portion in a retracted state) disclosed in an embodiment of this application;

[0071] Figure 6 This is a front view of the handle (with the stop portion in a retracted state) disclosed in an embodiment of this application;

[0072] Figure 7 for Figure 6 Sectional view of BB;

[0073] Figure 8 This is a schematic diagram of the handle (with the stop extended) disclosed in an embodiment of this application;

[0074] Figure 9 This is a top view of the handle (with the stop extended) disclosed in the embodiment of this application;

[0075] Figure 10 This is a schematic diagram of the structure of the gripping part and the stop part disclosed in the embodiments of this application;

[0076] Figure 11 This is a front view of the lifting mechanism disclosed in the embodiments of this application;

[0077] Figure 12 for Figure 11 Sectional view of AA;

[0078] Figure 13 This is a partial structural schematic diagram of the lifting mechanism disclosed in an embodiment of this application;

[0079] Figure 14 This is a schematic diagram of another partial structure of the lifting mechanism disclosed in the embodiments of this application;

[0080] Figure 15 This is an exploded view of the lifting mechanism disclosed in the embodiments of this application.

[0081] Explanation of reference numerals in the attached figures:

[0082] 100-Refrigerator

[0083] 1-Box body; 11-Storage compartment; 12-Front opening; 13-Door;

[0084] 2-Shelf assembly; 21-Shelf connector; 22-Shelf; 221-Panel; 222-Panel support;

[0085] 3-Lifting mechanism; 31-First support rod; 32-Handle; 321-Handle body; 322-Stop part; 323-Grip part; 33-Transmission assembly; 331-First transmission rod; 332-Second transmission rod; 333-First transmission structure; 3331-Worm part; 3332-Worm wheel; 334-Second transmission structure; 3341-First rack part; 3342-First transmission gear; 335-Third transmission structure; 3351-Second rack part; 3352-Second transmission gear; 34-Second support rod; 35-Constant force spring;

[0086] X - First horizontal direction. Detailed Implementation

[0087] The technical solutions of 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 of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0088] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0089] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0090] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0091] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0092] A refrigerator is a refrigeration device that maintains a constant low temperature to keep food or other items at a constant low temperature. Nowadays, with the continuous improvement of people's living standards, the demand for large-capacity refrigerators is increasing. In order to accommodate items of different sizes and to improve the utilization of the internal space of the refrigerator, multiple shelves are set up inside the refrigerator for storing items. By adjusting the height between adjacent shelves, different sizes of items can be accommodated.

[0093] In related technologies, the lifting structure used to adjust the shelf height needs to lock the shelf at the current height after the shelf height is adjusted. However, the shelf is limited by multiple densely arranged locking parts designed along the extension direction of the rack, which mesh with the locking teeth located at different height positions to lock or unlock the shelf lifting action. This design method makes the overall structure of the lifting structure with locking parts more complex and relatively large, which will occupy too much space in the cabinet and reduce the internal volume of the cabinet.

[0094] Based on this, this application discloses a refrigerator that solves the problem that the lifting structure is relatively large due to the setting of a separate locking component, which occupies too much space inside the refrigerator and reduces the internal volume of the refrigerator.

[0095] The present technical solution will be further described below with reference to the embodiments and accompanying drawings.

[0096] Please see Figure 1 This application provides a refrigerator 100, which includes a cabinet 1 having a storage compartment 11 and a front opening 12 communicating with the storage compartment 11. Food is placed into the storage compartment 11 through the open front opening, or food is taken out of the storage compartment 11 through the open front opening 12.

[0097] like Figure 1 As shown, the refrigerator 100 also includes a door 13, which is disposed at the front opening 12 of the cabinet 1 and is used to open or close the front opening 12 of the cabinet 1. In this embodiment, the door 13 is rotatably connected to the front opening 12 of the cabinet 1.

[0098] The refrigerator 100 also includes a cooling unit (not shown) for supplying cold air to the storage compartment 11 to cool it. The cooling unit generates cold air using a cooling cycle for compressing, condensing, and evaporating the refrigerant, and supplies this cold air to the storage compartment 11. The cooling unit includes a compressor for compressing the refrigerant, a condenser for condensing the compressed refrigerant, an expansion valve for expanding the condensed refrigerant, and an evaporator for evaporating the expanded refrigerant to remove heat. The compressor, condenser, expansion valve, and evaporator form a cold cycle in which cooling air is supplied to the storage compartment 11. As a common component, a fan can be installed adjacent to the evaporator to force air circulation, blowing the cold air generated at the evaporator into the storage compartment 11. The temperature of the storage compartment 11 can be controlled by adjusting the fan's airflow and direction, adjusting the amount of refrigerant circulating, or adjusting the compressor's compression frequency to control the refrigeration load.

[0099] like Figure 1 As shown, the refrigerator 100 also includes a shelf assembly 2, which is used to place items. The shelf assembly 2 allows users to place items in the storage compartment 11 in layers. The items include food or other items that need to be refrigerated at low temperatures.

[0100] In most refrigerators, the side wall of the storage compartment 11 is provided with several pairs of vertically arranged adjustable positions, and the shelf assembly 2 is supported on the adjustable positions. The height of the shelf assembly 2 with this structure is fixed. Only some shelf assemblies 2 can be removed to increase the height between the remaining shelf assemblies 2, but it is not possible to suspend the shelf assembly 2 at any position.

[0101] Therefore, as Figure 1 and Figure 2 As shown, the refrigerator 100 of this application also includes a lifting mechanism 3, which is disposed in the storage compartment 11 and is used to adjust the height of the shelf assembly 2.

[0102] like Figure 1 and Figure 2 As shown, the lifting mechanism 3 includes a first support rod 31, which is vertically arranged in the storage room 11. The shelf assembly 2 is slidably connected to the first support rod 31, which provides a basis for the shelf assembly 2 to be set and moved.

[0103] The lifting mechanism 3 also includes a handle 32, which is rotatably mounted on the shelf assembly 2.

[0104] like Figure 3As shown, the lifting mechanism 3 also includes a transmission component 33, which is disposed between the handle 32 and the shelf assembly 2. The transmission component 33 is configured such that when the handle 32 rotates in the first rotation direction, the transmission component 33 can drive the shelf assembly 2 to rise relative to the first support rod 31, and when the handle 32 rotates in the second rotation direction, the transmission component 33 can drive the shelf assembly 2 to fall relative to the first support rod 31. The transmission component 33 can drive the lifting and lowering of the shelf assembly 2 by rotating the handle 32.

[0105] The second rotation direction is opposite to the first rotation direction, and one of the first rotation direction and the second rotation direction is clockwise, while the other is counterclockwise.

[0106] like Figure 4 and Figure 8 As shown, the handle 32 includes a handle body 321 and a stop 322. The stop 322 is movably connected to the handle body 321 so that the stop 322 can switch between a retracted state and an extended state.

[0107] like Figure 3 and Figure 4 As shown, when the stop part 322 is in the retracted state, the handle 32 can rotate in the first rotation direction and can rotate in the second rotation direction; combined with Figure 3 and Figure 8 When the stop part 322 is in the extended state, the stop part 322 can abut against the shelf assembly 2 to prevent the handle 32 from rotating in the second rotation direction.

[0108] Since most existing refrigerators lock the height of the shelf assembly 2 by a separate locking device after the shelf assembly 2 is moved, and the locking device is often set together with the lifting mechanism 3, the overall structure of the lifting mechanism 3 is more complex and larger in size, which will occupy more space in the storage compartment 11 and reduce the space utilization rate of the storage compartment 11.

[0109] Therefore, in this embodiment, by abutting the stop 322 of the handle 32 against the shelf assembly 2 when it is extended, the shelf assembly 2 is locked after it has been moved to a suitable height. The unlocking and locking functions are integrated into the handle 32. The handle 32 can not only raise and lower the shelf assembly 2, but also lock it after it has moved. This avoids the need to set a separate locking structure to lock the shelf assembly 2 after it has moved. This makes the lifting mechanism 3 simple in structure, small in size, and occupies less space in the storage room 11, thus increasing the space for placing items in the storage room 11 and improving the space utilization of the storage room 11.

[0110] For example, when the height of the shelf assembly 2 needs to be adjusted, the stop 322 of the handle 32 is in a retracted state. The handle 32 can then be rotated. When the handle 32 is rotated in a first rotation direction, the shelf assembly 2 rises under the drive of the transmission component 33. When the handle 32 is rotated in a second rotation direction, the shelf assembly 2 descends under the drive of the transmission component 33. When the shelf assembly 2 rises to a suitable height, the handle 32 rotates to a horizontal position. At this time, the stop 322 is extended and abuts against the shelf assembly 2, preventing the handle 32 from rotating in the second rotation direction. This prevents the shelf assembly 2 from descending, thus locking the height of the shelf assembly 2 and preventing accidental descent, ensuring the safety and stability of the items on the shelf assembly 2.

[0111] In some embodiments, such as Figure 4 and Figure 8 As shown, the stop part 322 is rotatably connected to the handle body 321, that is to say, the stop part 322 can rotate relative to the handle body 321. The stop part 322 achieves the switching between the retracted state and the extended state by rotating.

[0112] like Figure 5 and Figure 9 As shown, the handle 32 also includes a grip portion 323, which is connected to the stop portion 322 and can rotate with the stop portion 322. Figure 6 and Figure 7 As shown, when the stop part 322 rotates to the retracted state, the grip part 323 extends out of the handle body 321. When the stop part 322 rotates to the extended state, the grip part 323 retracts into the handle body 321.

[0113] In other words, the handle body 321 of the handle 32 is rotatably connected to the grip part 323 and the stop part 322. When it is necessary to adjust the height of the shelf assembly 2, the stop part 322 rotates to the retracted state. At this time, the grip part 323 extends out of the handle body 321. The user can rotate the handle 32 by holding the grip part 323 and rotating the grip part 323, thereby adjusting the height of the shelf assembly 2. There is a comfortable grip point when rotating the handle 32, which improves the stability and accuracy of operation.

[0114] After the height of the shelf assembly 2 is adjusted, the stop part 322 rotates to the extended state. At this time, the grip part 323 retracts the handle body 321, so the user cannot grip the grip part 323, which makes it inconvenient to rotate the handle 32. The stop part 322 abuts against the shelf assembly 2, and the height of the shelf assembly 2 is locked while ensuring that the handle 32 will not rotate.

[0115] In some embodiments, combined with Figure 7 and Figure 10The grip portion 323 and the stop portion 322 are perpendicular, and the connection between the grip portion 323 and the stop portion 322 is hinged to the handle body 321. The vertical design of the grip portion 323 and the stop portion 322 makes it easier for the user to grip and apply force during use, resulting in a more ergonomic grip and reducing hand fatigue and discomfort. The hinged connection allows the grip portion 323 and the stop portion 322 to rotate relative to the handle body 321, increasing operational flexibility. Users can adjust the angle and position of the handle as needed to adapt to different operating environments and task requirements. Furthermore, the hinged connection also increases the durability of the handle 32. Because the connection can withstand certain torsional and bending forces, the handle 32 is less prone to loosening or damage during long-term use. In addition, the vertical design of the grip portion 323 allows the handle 32 to be folded more compactly when not in use, thereby reducing the space occupied by the handle 32.

[0116] In some embodiments, such as Figure 10 As shown, the length of the grip portion 323 is greater than the length of the stop portion 322. Since the user grips the grip portion 323 when turning the handle 32, the longer grip portion 323 provides the user with a larger gripping area, making operation more comfortable and reducing hand fatigue. At the same time, the larger gripping area also means that the user can control the handle 32 more stably, improving the accuracy and safety of operation.

[0117] Furthermore, in physics, torque is the product of force and lever arm. Because the grip 323 is longer, the user can generate a greater torque when turning the handle 32, thus making it easier to overcome resistance and raise or lower the shelf assembly 2.

[0118] In some embodiments, such as Figure 2 As shown, the shelf assembly 2 includes a shelf connecting seat 21, which is slidably connected to the first support rod 31, and a handle 32 is rotatably disposed on the side of the shelf connecting seat 21 near the front opening 12 of the box body 1.

[0119] The shelf assembly 2 also includes a shelf 22, which is disposed on the shelf connecting seat 21. The shelf 22 is used to place items. Along the direction from the storage chamber 11 to the front opening 12 of the box body 1, the shelf 22 extends from the edge of the shelf connecting seat 21 near the edge of the front opening 12 of the box body 1. When the stop part 322 of the handle 32 is in the extended state, the stop part 322 abuts against the edge of the shelf 22 near the front opening 12 of the box body 1.

[0120] The handle 32 is rotatably positioned on the side of the shelf connecting seat 21 near the front opening 12 of the cabinet 1, allowing the user to easily reach and operate the handle 32 without entering the storage compartment 11. This improves operational convenience and reduces inconvenience for the user during operation. When the stop part 322 is in the extended state, it abuts against the edge of the shelf 22 near the front opening 12 of the cabinet 1, making the abutment state of the stop part 322 readily observable by the user. This ensures that the stop part 322 effectively abuts against the shelf 22, preventing the shelf 22 from falling accidentally and improving the safety of using the refrigerator 100.

[0121] In some embodiments, such as Figure 15 As shown, the shelf 22 includes a panel 221 and a panel support 222. The panel 221 is used to place items, and the panel support 222 surrounds the outer periphery of the panel 221. The upper surface of the panel support 222 is higher than the upper surface of the panel 221.

[0122] Since the items placed on panel 221 are kept at a low temperature by the cooling device of refrigerator 100, if the cooling device malfunctions, the temperature in storage compartment 11 will gradually rise, and water droplets will form on the surface of the items. If the upper surface of panel support 222 is lower than the upper surface of panel 221, the water droplets will collect on panel 221 and drip into storage compartment 11. Furthermore, if liquid is spilled on panel 221, the liquid will overflow into other parts of the refrigerator.

[0123] Therefore, in this embodiment, the upper surface of the panel support 222 is higher than the upper surface of the panel 221, meaning that the perimeter of the panel 221 has a slightly upturned structure. This prevents liquid from overflowing onto other parts of the refrigerator 100 when there is liquid on the panel 221, keeping the interior of the refrigerator 100 clean. Furthermore, the panel support 222 surrounds the outer perimeter of the panel 221, forming a stable support frame, enhancing the overall structural stability of the shelf 22, enabling it to withstand greater weight and pressure, and preventing deformation or damage.

[0124] It should be noted that panel 221 is made of tempered glass. Panel 221 made of tempered glass has high load-bearing capacity and impact resistance, ensuring that it will not easily break during use.

[0125] In some embodiments, such as Figure 11 As shown, the transmission assembly 33 includes a first transmission rod 331, which is connected to the handle 32 and can rotate with the handle 32. The rotation of the handle 32 drives the first transmission rod 331 to rotate.

[0126] The transmission assembly 33 also includes a second transmission rod 332, which is perpendicular to the first transmission rod 331.

[0127] The transmission assembly 33 also includes a first transmission structure 333 and a second transmission structure 334. The first transmission structure 333 is used to convert the rotation of the first transmission rod 331 into the rotation of the handle 32 transmitted to the second transmission rod 332 through the first transmission rod 331. The second transmission structure 334 is disposed between the second transmission rod 332 and the first support rod 31. The second transmission structure 334 is used to convert the rotation of the second transmission rod 332 into the sliding of the shelf assembly 2 relative to the first support rod 31.

[0128] The rotation of the handle 32 is transmitted from the first transmission rod 331 to the second transmission rod 332 through the first transmission structure 333 and the second transmission structure 334. The rotation of the second transmission rod 332 drives the shelf assembly 2 to slide relative to the first support rod 31.

[0129] In some embodiments, such as Figure 13 As shown, the first transmission structure 333 includes a worm gear portion 3331, which is disposed on the first transmission rod 331.

[0130] The first transmission structure 333 also includes a worm gear 3332, which is disposed on the second transmission rod 332, and the worm portion 3331 meshes with the worm gear 3332.

[0131] Because the meshing of the worm and worm wheel is highly precise, it ensures efficient energy transfer during the transmission from the first transmission rod 331 to the second transmission rod 332, reducing energy loss. Furthermore, the worm gear drive can achieve a large transmission ratio, allowing the transmission assembly 33 to provide greater torque to drive the shelving assembly 2, which carries more items, to move. Simultaneously, the meshing process of the worm and worm wheel is smooth, with minimal impact and vibration, resulting in low noise during transmission. In addition, the worm gear drive has a self-locking function; once the shelving assembly 2 has moved to the appropriate position, the worm wheel 3332 on the second transmission rod 332 cannot rotate in the opposite direction under the weight of the shelving assembly 2, achieving a lock between the first transmission rod 331 and the second transmission rod 332.

[0132] Combination Figure 13 and Figure 14 The worm gear 3331 and the worm wheel 3332 are housed in a housing. This housing can isolate the worm gear 3331 and the worm wheel 3332 from the outside world, preventing foreign objects from entering between the worm gear 3331 and the worm wheel 3332 and affecting the normal transmission between the first transmission rod 331 and the second transmission rod 332.

[0133] For example, the first transmission structure 333 can also be a bevel gear, that is, a bevel gear is provided on the first transmission rod 331 and a bevel gear is provided on the second transmission rod 332, and the rotation axes of the bevel gear on the first transmission rod 331 and the bevel gear on the second transmission rod 332 are perpendicular. The rotation of the first transmission rod 331 can be effectively converted into the rotation of the second transmission rod 332 by the bevel gear on the first transmission rod 331 and the bevel gear on the second transmission rod 332.

[0134] In some embodiments, such as Figure 12 As shown, the second transmission structure 334 includes a first rack portion 3341 and a first transmission gear 3342. The first rack portion 3341 is arranged vertically on the first support rod 31, and the first transmission gear 3342 is arranged on the shelf assembly 2 and fixedly connected to the second transmission rod 332. The first transmission gear 3342 meshes with the first rack portion 3341.

[0135] Because the first transmission gear 3342 is mounted on the shelf assembly 2, when the second transmission rod 332 drives the first transmission gear 3342 to rotate, the first transmission gear 3342 carries the shelf assembly 2 along the first rack portion 3341. The meshing of the first rack portion 3341 and the first transmission gear 3342 ensures a stable transmission ratio, allowing for precise control of the lifting height of the shelf assembly 2. Furthermore, the continuous meshing of the first rack portion 3341 and the first transmission gear 3342 ensures that the shelf assembly 2 maintains accurate positioning during lifting, avoiding misalignment or swaying due to transmission errors. In addition, the multi-point contact of the meshing of the first rack portion 3341 and the first transmission gear 3342 more effectively disperses pressure, improving the load-bearing capacity of the second transmission structure 334.

[0136] It should be noted that, in addition to the gear and rack transmission described in the above embodiment, the second transmission structure 334 can also be a ball screw or a linear guide rail. This embodiment does not specifically limit it in this regard.

[0137] For example, when the second transmission structure 334 is a ball screw, it can provide higher transmission efficiency and durability when the shelf assembly 2 is under heavy load; when the second transmission structure 334 is a linear guide, it can provide a smoother adjustment experience, which is suitable for application scenarios that require precise adjustment.

[0138] In some embodiments, see Figures 13 to 15 The lifting mechanism 3 also includes a second support rod 34, which is arranged at intervals with the first support rod 31 along the first horizontal direction X. Both the second support rod 34 and the first support rod 31 are slidably connected to the shelf assembly 2. The first support rod 31 and the second support rod 34 provide a stable foundation for the shelf assembly 2, enhancing the stability of the shelf assembly 2 during lifting.

[0139] Wherein, the first horizontal direction X is the length direction of box 1.

[0140] Combination Figure 11 and Figure 13 The transmission assembly 33 further includes a third transmission structure 335, which is disposed between the second transmission rod 332 and the second support rod 34. The third transmission structure 335 is used to convert the rotation of the second transmission rod 332 into the sliding of the shelf assembly 2 relative to the second support rod 34. The third transmission structure 335 includes a second rack portion 3351 and a second transmission gear 3352. The second rack portion 3351 is disposed vertically on the second support rod 34, and the second transmission gear 3352 is disposed on the shelf assembly 2 and fixedly connected to the second transmission rod 332. The second transmission gear 3352 meshes with the second rack portion 3351.

[0141] If only the second transmission structure 334 drives the shelf assembly 2 to rise and fall, the shelf assembly 2 will tilt during the rising and falling process. To ensure that the shelf assembly 2 does not tilt during the rising and falling process, a third transmission structure 335 is provided between the second support rod 34 and the second transmission rod 332. When the second transmission rod 332 rotates, the second transmission structure 334 and the third transmission structure 335 can act simultaneously, so that the shelf assembly 2 rises or falls simultaneously, avoiding the risk of items falling off the shelf assembly 2 due to tilting during the rising and falling process.

[0142] It should be noted that the second rack portion 3351 and the second transmission gear 3352 in the third transmission structure 335 are the same as the first rack portion 3341 and the first transmission gear 3342 in the second transmission structure 334, and will not be described in detail here.

[0143] Similarly, it should be noted that, in addition to the gear and rack transmission described in the above embodiment, the third transmission structure 335 can also be a ball screw or a linear guide rail. This embodiment does not specifically limit this.

[0144] In some embodiments, combined with Figure 12 and Figure 15 The lifting mechanism 3 also includes a constant force spring 35. The fixed end of the constant force spring 35 is connected to the first support rod 31 and is located above the shelf assembly 2. The free end of the constant force spring 35 extends downward and is connected to the shelf assembly 2. The constant force spring 35 is used to provide a constant tension to the shelf assembly 2.

[0145] The constant force spring 35 provides a constant force within a given compression or tension range. Whether the spring is compressed or stretched, the tension it provides remains relatively stable and does not fluctuate significantly with changes in deformation. This ensures that the shelf assembly 2 remains smooth during lifting and lowering, avoiding sudden descent or shaking. Furthermore, the constant tension of the constant force spring 35 helps enhance the stability of the lifting mechanism 3. During the lifting and lowering of the shelf assembly 2, the constant force spring 35 provides a stable supporting force, ensuring that the shelf assembly 2 remains stable at different heights, thereby improving the stability of the entire system.

[0146] It should be noted that the constant force spring 35 in the above embodiment can be replaced with a gas spring or a counterweight to provide a similar balance support effect. This embodiment does not specifically limit this. Gas springs perform well in terms of load-bearing and shock absorption, which can further improve the smoothness of operation; while counterweights can share the load of the lifting mechanism 3 through gravity balance.

[0147] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A refrigerator, characterized in that, include: A housing having a storage compartment and a front opening communicating with the storage compartment; A door is disposed at the front opening of the housing and is configured to open or close the front opening of the housing; A cooling device for cooling the storage compartment; A shelf assembly for holding items; A lifting mechanism, used to adjust the height of the shelf assembly, the lifting mechanism comprising: A first support rod is vertically disposed within the storage chamber, and the shelf assembly is slidably connected to the first support rod; A handle, which is rotatably mounted on the shelf assembly; A transmission assembly is disposed between the handle and the shelf assembly. The transmission assembly is configured such that when the handle is rotated in a first rotation direction, the transmission assembly can drive the shelf assembly to rise relative to the first support rod, and when the handle is rotated in a second rotation direction, the transmission assembly can drive the shelf assembly to fall relative to the first support rod, wherein the second rotation direction is opposite to the first rotation direction. The handle includes: handle body; A stop portion is movably connected to the handle body so that the stop portion can switch between a retracted state and an extended state. When the stop is in the retracted state, the handle can rotate in the first rotation direction and can rotate in the second rotation direction; When the stop is in the extended state, the stop can abut against the shelf assembly to prevent the handle from rotating in the second rotation direction.

2. The refrigerator according to claim 1, characterized in that, The stop portion is rotatably connected to the handle body, and the handle further includes: A gripping part, which is connected to the stop part and can rotate with the stop part; When the stop part is rotated to the retracted state, the grip part extends out of the handle body; When the stop part rotates to the extended state, the grip part retracts into the handle body.

3. The refrigerator according to claim 2, characterized in that, The grip portion is perpendicular to the stop portion, and the connection between the grip portion and the stop portion is hinged to the handle body.

4. The refrigerator according to claim 2, characterized in that, The length of the grip portion is greater than the length of the stop portion.

5. The refrigerator according to claim 1, characterized in that, The transmission assembly includes: A first transmission rod is connected to the handle and can rotate with the handle; The second transmission rod is arranged perpendicularly to the first transmission rod; A first transmission structure is disposed between the first transmission rod and the second transmission rod, and the first transmission structure is used to convert the rotation of the first transmission rod into the rotation of the second transmission rod; A second transmission structure is disposed between the second transmission rod and the first support rod. The second transmission structure is used to convert the rotation of the second transmission rod into the sliding of the shelf assembly relative to the first support rod.

6. The refrigerator according to claim 5, characterized in that, The first transmission structure includes: A worm gear portion, wherein the worm gear portion is disposed on the first transmission rod; A worm gear is disposed on the second transmission rod, and the worm portion meshes with the worm gear.

7. The refrigerator according to claim 5, characterized in that, The second transmission structure includes: A first rack portion is disposed vertically on the first support rod; A first transmission gear is disposed on the shelf assembly and fixedly connected to the second transmission rod, and the first transmission gear meshes with the first rack portion.

8. The refrigerator according to claim 5, characterized in that, The lifting mechanism also includes: The second support rod is arranged at intervals with the first support rod along a first horizontal direction, and both the second support rod and the first support rod are slidably connected to the shelf assembly. The transmission assembly also includes: A third transmission structure is disposed between the second transmission rod and the second support rod. The third transmission structure converts the rotation of the second transmission rod into sliding of the shelf assembly relative to the second support rod. The third transmission structure includes: The second rack portion is disposed vertically on the second support rod; The second transmission gear is disposed on the shelf assembly and fixedly connected to the second transmission rod, and the second transmission gear meshes with the second rack portion.

9. The refrigerator according to claim 1, characterized in that, The lifting mechanism also includes: A constant force spring, the fixed end of which is connected to the first support rod and located above the shelf assembly, the free end of which extends downward and is connected to the shelf assembly, the constant force spring being used to provide a constant tension to the shelf assembly.

10. The refrigerator according to claim 1, characterized in that, The shelf assembly includes: A shelf connecting seat is slidably connected to the first support rod, and a handle is rotatably disposed on the side of the shelf connecting seat near the front opening of the box body; A shelf, which is disposed on the shelf connecting seat, is used to place items, and extends from the edge of the shelf near the front opening of the box in the direction of the storage room towards the front opening of the box. When the stop is in the extended state, the stop abuts against the edge of the shelf near the front opening of the box.

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