Shelf and storage cabinet

Abstract

The utility model discloses a shelf and a storage cabinet, and relates to the technical field of storage equipment, the shelf comprises a mounting seat, a driving assembly, a storage assembly and a transmission assembly, the mounting seat comprises a support frame and a shell mounted on the support frame; the driving assembly comprises a driving part, a transmission part and a transmission shaft, the transmission shaft is rotationally installed on the supporting frame and penetrates through the shell, the transmission part is arranged in the shell, and the driving part is installed on the supporting frame and is in transmission connection with the transmission shaft through the transmission part; the transmission assembly is connected between the transmission shaft and the storage assembly so as to drive the storage assembly to ascend and descend. The manufacturing die of the mounting base in the shelf is simple in structure, and the production cost is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of storage equipment technology, and in particular to a shelf and a storage cabinet. Background Technology

[0002] To accommodate items of different sizes, refrigerator shelves are typically designed with electric lift mechanisms. In these technologies, to ensure overall structural strength, the power mechanism driving the shelves' lifting and moving uses numerous metal castings. However, the complex structure of the power mechanism components and the corresponding complex mold structures result in high mold costs and consequently, high overall production costs. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a shelf whose mounting base has a simple manufacturing mold structure, effectively reducing production costs.

[0004] This utility model also provides a storage cabinet with the above-mentioned shelves.

[0005] A shelf according to a first aspect of the present invention includes a mounting base, a support frame, and a housing mounted on the support frame; a drive assembly including a drive member, a transmission component, and a transmission shaft, wherein the transmission shaft is rotatably mounted on the support frame and passes through the housing, the transmission component is disposed within the housing, and the drive member is mounted on the support frame and is connected to the transmission shaft via the transmission component; a storage assembly; and a transmission assembly connected between the transmission shaft and the storage assembly to drive the storage assembly to rise and fall.

[0006] The shelf according to the first aspect of this utility model has at least the following beneficial effects: By setting the mounting base as a split structure, that is, the mounting base includes a support frame for supporting the drive assembly and a housing for protecting the transmission components, the component structure is simplified. The support frame and the housing are manufactured separately, which helps to simplify the molds used to produce the mounting base, thereby reducing mold costs and overall production costs. At the same time, the support frame for supporting the drive assembly is an integral structural component, which helps to improve the support stability and does not affect the overall support effect of the mounting base, thereby providing stable support for the drive assembly so that the drive assembly can stably drive the storage assembly to rise and fall through the transmission components.

[0007] According to some embodiments of this utility model, the support frame is a metal part, and the housing is a plastic part.

[0008] According to some embodiments of the present invention, the housing includes an end plate and an annular side plate. One end of the annular side plate is mounted on the support frame, and the end plate is mounted on the other end of the annular side plate. The end plate is provided with a through hole, and the drive shaft passes through the through hole.

[0009] According to some embodiments of the present invention, the end plate is provided with recesses on both sides along the thickness direction, the recesses are arranged around the through hole, the transmission assembly is located on the side of the end plate away from the annular side plate, and part of the structure of the transmission assembly is accommodated in the recesses located on the side of the end plate away from the annular side plate.

[0010] According to some embodiments of the present invention, a first kinematic pair is formed between the drive shaft and the support frame, and the components forming the first kinematic pair include plastic parts.

[0011] According to some embodiments of the present invention, the drive assembly further includes a bushing, which is fixedly installed on one of the support frame and the transmission shaft, and the other is rotatably engaged with the bushing. The bushing is one of the components forming the first kinematic pair.

[0012] According to some embodiments of the present invention, the transmission assembly includes a turntable and a flexible cable. The turntable is mounted on the transmission shaft, the flexible cable is wound around the turntable, and one end of the flexible cable is fixed to the turntable, while the other end is connected to the placement assembly.

[0013] According to some embodiments of the present invention, a second kinematic pair is formed between the turntable and the flexible cable, and the components forming the second kinematic pair include plastic parts.

[0014] According to some embodiments of the present invention, the transmission assembly further includes a limiting block, which is installed on the housing and located above the turntable. The limiting block is used to limit the flexible cable, and the limiting block is configured as a plastic part; and / or, the limiting block is provided with a plurality of grooves.

[0015] According to some embodiments of this utility model, there are two sets of mounting bases and two sets of transmission components. The transmission shaft is rotatably mounted on the support frame of the two sets of mounting bases. The two sets of transmission components are respectively mounted on both ends of the transmission shaft and located on opposite sides of the two sets of mounting bases. Both sets of transmission components are connected to the placement component. The two sets of mounting bases are symmetrically arranged about a reference plane perpendicular to the transmission shaft, and the two sets of transmission components are symmetrically arranged about the reference plane.

[0016] A storage cabinet according to a second aspect of the present invention includes a cabinet body and a shelf according to a first aspect of the present invention, wherein the shelf is disposed within the cabinet body.

[0017] The storage cabinet according to the second aspect of this utility model has at least the following beneficial effects: Because the storage cabinet uses the aforementioned shelf, and by setting the mounting base as a split structure—that is, the mounting base includes a support frame for supporting the drive assembly and a housing for protecting the transmission components—the component structure is simplified. The support frame and housing are manufactured separately, which simplifies the molds used to produce the mounting base, thereby reducing mold costs and overall production costs. Simultaneously, the support frame for supporting the drive assembly is an integral structural component, which helps improve support stability and does not affect the overall support effect of the mounting base. This allows for stable support of the drive assembly, enabling the drive assembly to stably drive the storage assembly to rise and fall via the transmission components.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0020] Figure 1 This is a partial structural diagram of the shelf in an embodiment of the present invention (the storage components are not shown).

[0021] Figure 2 This is a partial cross-sectional view of the shelf in an embodiment of this utility model;

[0022] Figure 3 This is a schematic diagram of the support frame in an embodiment of this utility model;

[0023] Figure 4 This is an exploded view of the shell in an embodiment of this utility model;

[0024] Figure 5 This is a schematic diagram of the turntable structure in an embodiment of this utility model;

[0025] Figure 6 This is a schematic diagram of the limiting block in an embodiment of this utility model.

[0026] Figure label:

[0027] Mounting base 100; support frame 110; first plate 111; second plate 112; mounting hole 1121; housing 120; end plate 121; through hole 1211; recess 1212; annular side plate 122;

[0028] Drive assembly 200; drive component 210; transmission component 220; drive gear 221; driven gear 222; transmission shaft 230; intermediate shaft section 231; end shaft section 232; bushing 240;

[0029] Transmission assembly 300; turntable 310; receiving groove 311; flexible cable 320; limiting block 330; groove 331. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as setting, installing, connecting, assembling, and cooperating should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] Refrigerator shelves are typically designed to be height-adjustable and electrically operated, allowing users to easily adjust their position to accommodate items of different sizes. In existing shelf-lifting devices, the power mechanism is generally mounted inside the refrigerator body via a bracket. This bracket typically includes a mounting part connected to the refrigerator body, a support part supporting the power mechanism, and a cover part enclosing the transmission part of the power mechanism. In related technologies, to ensure structural strength, the bracket is usually a single metal casting. Due to the complexity of the bracket structure, the corresponding mold structure is also complex, resulting in high mold costs and difficulties in demolding, leading to high overall production costs.

[0035] Therefore, referring to Figures 1 to 6 As shown, a first aspect of this utility model provides a shelf for use in a storage cabinet. The storage cabinet includes, but is not limited to, refrigerators, freezers, and storage devices for placing objects.

[0036] Reference Figure 1 and Figure 2 As shown, the shelf includes a mounting base 100, a drive assembly 200, a storage assembly, and a transmission assembly 300. The mounting base 100 connects the shelf to the storage cabinet and provides support for the drive assembly 200. The transmission assembly 300 connects the drive assembly 200 and the storage assembly, allowing the drive assembly 200 to drive the storage assembly to move up and down via the transmission assembly 300. This adjusts the height of the storage assembly and the spatial layout within the storage cabinet to accommodate items of different sizes, facilitating user operation. The storage assembly is used to place items and can be a tray, shelf, box, grid, etc.

[0037] Reference Figure 1 and Figure 3 As shown, the mounting base 100 includes a support frame 110 and a housing 120. Specifically, the support frame 110 has an L-shaped cross-section, meaning it is an L-shaped plate structure. The support frame 110 includes a first plate 111 and a second plate 112 that are perpendicular to each other. The first plate 111 is fixedly installed on the mounting wall inside the cabinet of the storage unit, while the second plate 112 is perpendicular to the mounting wall. To ensure the structural strength of the mounting base 100 and provide stable support for the drive assembly 200, the support frame 110 is typically made of metal, which offers high structural strength and stability. For example, the support frame 110 can be a sheet metal part formed by bending or a metal casting. The L-shaped plate structure of the support frame 110 is simple, and whether formed by bending or casting, the required molds are simple in structure, which helps reduce mold costs. Furthermore, the L-shaped plate structure of the support frame 110 can be replaced by commonly used standard parts such as corner brackets, which helps reduce development costs.

[0038] In other embodiments, the support frame 110 can also be a T-shaped plate structure or other shaped structures. Furthermore, provided that structural strength requirements are met, the support frame 110 can also be made of plastic and manufactured using injection molding, resulting in a simple structure and corresponding simple mold structure, which helps reduce production costs.

[0039] Reference Figure 1 and Figure 2 As shown, the housing 120 is an open-end structure. The housing 120 is fixedly mounted on the second plate 112 of the support frame 110, with the open end of the housing 120 facing the second plate 112. For example, the housing 120 is fixedly connected to the second plate 112 by multiple screws. Thus, the housing 120 serves as a reinforcing structure for the second plate 112, which helps to improve the structural rigidity of the second plate 112, thereby improving the structural strength and support stability of the support frame 110.

[0040] Reference Figure 2 As shown, the drive assembly 200 includes a drive member 210, a transmission component 220, and a transmission shaft 230. Specifically, the drive member 210 is a power source such as a motor or rotary cylinder for driving the rotation of the component, and the drive member 210 is fixedly mounted on the second plate 112 of the support frame 110, with the drive shaft of the drive member 210 passing through the second plate 112 and extending into the housing 120.

[0041] Reference Figures 2 to 4 As shown, the drive shaft 230 is rotatably mounted on the second plate 112 of the support frame 110. For this purpose, the second plate 112 is provided with a mounting hole 1121, and the housing 120 is provided with a through hole 1211 coaxially arranged with the mounting hole 1121. The drive shaft 230 passes through the mounting hole 1121 and the through hole 1211, that is, the drive shaft 230 passes through the support frame 110 and the housing 120, and the drive shaft 230 is rotatably engaged with the second plate 112. To improve the rotational stability and smoothness of the drive shaft 230, the drive shaft 230 and the second plate 112 can be connected by a bushing 240 or a bearing or other supporting component.

[0042] Reference Figure 2 As shown, the transmission component 220 is connected between the drive component 210 and the transmission shaft 230. Specifically, the transmission component 220 includes a driving gear 221 and a driven gear 222 disposed within the housing 120. The driving gear 221 is fixedly connected to the drive shaft of the drive component 210, and the driven gear 222 is fixedly connected to the transmission shaft 230, with the driven gear 222 meshing with the driving gear 221. Therefore, the drive component 210 can drive the driving gear 221 to rotate, and the driving gear 221 drives the driven gear 222 to rotate in the opposite direction, thereby driving the transmission shaft 230 to rotate.

[0043] Therefore, the mounting base 100 mainly provides support for the drive component 210 and the transmission shaft 230 through the support frame 110, while the housing 120 mainly prevents foreign objects such as dust from entering the transmission component 220 and affecting the transmission function. The housing 120 does not provide support for the drive component 210 and the transmission shaft 230, and the structural strength requirements for the housing 120 are relatively low. Therefore, compared with metal parts, the housing 120 can be made of plastic with lower structural strength and processed by injection molding. Moreover, the housing 120 is a cover structure with one open end, which is simple in structure and helps to simplify the structure of the corresponding mold, thereby reducing production costs.

[0044] Reference Figure 1 , Figure 2 and Figure 5As shown, the transmission assembly 300 includes a turntable 310 and a flexible cable 320. Specifically, the turntable 310 is mounted on the shaft section of the transmission shaft 230 that extends out of the housing 120, i.e., the turntable 310 is located on the side of the housing 120 opposite to the second plate 112. An annular receiving groove 311 is provided on the outer periphery of the turntable 310, and the receiving groove 311 is arranged around the transmission shaft 230. One end of the flexible cable 320 is fixed to the turntable 310 or the transmission shaft 230, and the flexible cable 320 is wound around the receiving groove 311 of the turntable 310 to prevent the flexible cable 320 from detaching from the turntable 310 and causing failure. The other end of the flexible cable 320 hangs freely and is connected to the storage assembly. Therefore, when the drive member 210 drives the turntable 310 to rotate in the forward direction via the drive shaft 230, the flexible cable 320 is wound around the receiving groove 311 of the turntable 310 to lift the storage component; when the drive member 210 drives the turntable 310 to rotate in the reverse direction via the drive shaft 230, the flexible cable 320 is released from the receiving groove 311 of the turntable 310, causing the storage component to descend.

[0045] Therefore, by setting the mounting base 100 as a split structure, the component structure is simplified. The support frame 110 and the housing 120 of the mounting base 100 can be manufactured separately, which helps to simplify the molds used to produce the mounting base 100, thereby reducing mold costs and overall production costs. At the same time, the support frame 110 has good support stability and does not affect the overall support effect of the mounting base 100, thus providing stable support for the drive component 210 and the transmission shaft 230 to stably drive the turntable 310 to rotate and drive the flexible cable 320 to move, thereby realizing the lifting function of the storage component.

[0046] It is understandable that, since the support member and the housing 120 are separate structures, they can be manufactured separately, and therefore, the support member and the housing 120 can be made of different materials. In this embodiment, the support member is a metal part to meet the requirement of providing support; the housing 120 is a plastic part. Without affecting the support function of the mounting base 100, compared with the metal part, the plastic part has a lower cost, which helps to reduce the material cost of the mounting base 100 and improve economic efficiency; on the other hand, for the same volume, the plastic part is lighter, which helps to reduce the weight of the mounting base 100, achieve weight reduction, and meet the requirements of lightweight design.

[0047] Furthermore, it is easy to understand that since the turntable 310 is located on the side of the housing 120 opposite to the second plate 112, during the process of the drive component 210 driving the turntable 310 to rotate via the drive shaft 230, the turntable 310 and the drive shaft 230 may experience axial movement, causing the turntable 310 to contact and rub against the housing 120. Because the housing 120 is made of plastic, the noise generated by the friction between the housing 120 and the turntable 310 is low and not harsh, which helps to reduce the noise during the operation of the lifting assembly, resulting in quiet operation and good noise reduction performance.

[0048] Reference Figure 1 As shown, to improve the stability of the lifting process of the storage component, two sets of mounting bases 100 and transmission components 300 are provided. Specifically, the two sets of mounting bases 100 are symmetrically arranged in the left-right direction and connected to the cabinet body of the storage cabinet, and the two housings 120 are located on opposite sides of the two mounting bases 100 in the left-right direction. The two ends of the transmission shaft 230 pass through the two mounting bases 100 respectively and are rotatably engaged with the two mounting bases 100. The connection method between the transmission shaft 230 and the mounting base 100 can be referred to the above description, and will not be repeated here. It is easy to understand that the left-right direction is the axial direction of the transmission shaft 230. The plane of symmetry of the two sets of mounting bases 100 is defined as the reference plane, which is perpendicular to the transmission shaft 230. The drive component 210 is installed on the support frame 110 of any one of the mounting bases 100, and the transmission component 220 is located in the housing 120 of the corresponding mounting base 100.

[0049] Reference Figure 1 As shown, it can be understood that the two sets of transmission components 300 are respectively installed at both ends of the transmission shaft 230 and located on opposite sides of the two sets of mounting bases 100 in the left-right direction. The connection method between the transmission components 300 and the transmission shaft 230 can be referred to the above description, and will not be repeated here. Similarly, the two sets of transmission components 300 are symmetrically arranged about the above reference plane. One end of each of the two flexible cables 320 is freely suspended and connected to the left and right ends of the storage component, respectively. Therefore, when the drive member 210 drives the transmission shaft 230 to rotate, the turntables 310 at both ends of the transmission shaft 230 rotate with the transmission shaft 230, and the two flexible cables 320 are released synchronously from the two turntables 310, thereby reducing the stability of the storage component, or the two flexible cables 320 are wound synchronously around the two turntables 310, thereby stably lifting the storage component.

[0050] It is easy to understand that since both sets of mounting bases 100 and two sets of transmission components 300 are symmetrically arranged in the left-right direction, the degree of modularity is high. Furthermore, the two support frames 110, two housings 120, two turntables 310, and two flexible cables 320 can all be configured with the same structure, which helps reduce development costs. At the same time, the drive component 200 can be installed in any of the mounting bases 100, thus allowing for selective installation of the drive component 200 in the corresponding mounting base 100 based on the wiring layout within the storage cabinet, resulting in good applicability.

[0051] Reference Figure 4As shown, it can be understood that in any of the above embodiments, the housing 120 includes an end plate 121 and an annular side plate 122. Specifically, one end of the annular side plate 122 is fixedly mounted to the second plate 112 of the support frame 110 by screws, and the end plate 121 is fixedly mounted to the end of the annular side plate 122 opposite to the second plate 112 by screws. The through hole 1211 of the housing 120 is provided in the end plate 121. This allows the end plate 121 and the annular side plate 122 to cover the transmission component 220, preventing dust or other foreign objects from entering.

[0052] It is readily understood that the support structure for the power structure used to install the shelf lifting device in the prior art also includes a cover for closing the opening of the housing. In this embodiment, the housing 120 is divided into two parts: an end plate 121 and an annular side plate 122. The end plate 121 can be a cover from the prior art, which can be directly manufactured using the cover mold. Therefore, only a mold for producing the simpler annular side plate 122 needs to be added. The added mold has a simple structure, which helps to reduce mold costs and is easy to demold, reducing production difficulty. This avoids the need for a more complex mold for producing an integral housing, effectively reducing costs.

[0053] Reference Figure 4 As shown, it can be understood that recesses 1212 are provided on both sides of the end plate 121 along its thickness direction, and the recesses 1212 are arranged around the through hole 1211. It is easy to understand that the turntable 310 is located on the side of the end plate 121 opposite to the annular side plate 122. Part of the structure of the turntable 310 is accommodated in the recess 1212 located on the side of the end plate 121 opposite to the annular side plate 122, and the turntable 310 is spaced apart from the end plate 121, reducing the risk of noise generated by friction between the turntable 310 and the end plate 121. This makes the structure of the mounting base 100 and the transmission assembly 300 more compact in the axial direction of the transmission shaft 230, improving installability. Furthermore, it reduces the material usage of the end plate 121, further reducing production costs and weight, achieving lightweighting. Furthermore, it is easy to understand that since both sides of the end plate 121 are provided with recesses 1212, either side of the end plate 121 can face the annular side plate 122 during assembly, which helps to improve the fault tolerance rate and reduce the assembly difficulty.

[0054] Reference Figure 2As shown, it can be understood that in any of the above embodiments, the drive assembly 200 further includes a bushing 240, through which the drive shaft 230 and the support frame 110 are engaged. Specifically, the bushing 240 passes through the mounting hole 1121 of the second plate 112 and is fixedly connected to the second plate 112. For example, the bushing 240 and the second plate 112 are interference-fitted, or the bushing 240 is snapped onto the second plate 112, that is, the bushing 240 and the second plate 112 are relatively fixed in the circumferential direction of the mounting hole 1121. The drive shaft 230 passes through the bushing 240 and is rotatably engaged with the bushing 240. The bushing 240 has good wear resistance and support, reducing the risk of wear on the drive shaft 230 and improving the rotational stability of the drive shaft 230.

[0055] Reference Figure 2 As shown, in this embodiment, the connection between the drive shaft 230 and the bushing 240 forms a first kinematic pair between the drive shaft 230 and the support frame 110. This first kinematic pair is a movable connection where the two components, drive shaft 230 and bushing 240, directly contact and generate relative movement. At least one of the drive shaft 230 and bushing 240 is a plastic component. In this embodiment, since the drive shaft 230 needs to transmit torque, it is typically made of metal, which offers higher torsional strength and reliability. The bushing 240, on the other hand, is made of plastic. This design benefits both material cost reduction and economic efficiency, as plastic components are lighter for the same volume, thus reducing weight and meeting lightweight design requirements. Furthermore, the contact between the drive shaft 230 and bushing 240 is a metal-plastic contact, resulting in low and non-piercing noise from friction, which helps reduce noise during the operation of the lifting assembly, leading to quiet operation and good noise reduction performance.

[0056] In other embodiments, the drive shaft 230 can also be made of plastic, provided that the torsional strength of the drive shaft 230 meets the design requirements. Therefore, both the drive shaft 230 and the bushing 240 can be made of plastic, resulting in lower material costs, better economy, lighter weight, and better noise reduction. Alternatively, making the drive shaft 230 of plastic and the bushing 240 of metal can also achieve cost reduction, weight reduction, and noise reduction.

[0057] In other embodiments, it is understood that the bushing 240 is sleeved on the drive shaft 230 and fixed relative to the drive shaft 230, for example, the bushing 240 is interference-fitted with the drive shaft 230 or the bushing 240 is snapped onto the drive shaft 230. Simultaneously, the bushing 240 passes through the mounting hole 1121 of the second plate 112 and is rotatably engaged with the second plate 112. This reduces the risk of wear on the drive shaft 230 and improves the rotational stability of the drive shaft 230. It is readily understood that, in this case, the first kinematic pair between the drive shaft 230 and the support frame 110 is the connection between the bushing 240 and the support frame 110. The first kinematic pair is the active connection where the two components, the bushing 240 and the support frame 110, directly contact and generate relative movement. At least one of the bushing 240 and the support frame 110 is a plastic part. Similarly, to ensure the structural strength of the support frame 110, it is typically a metal part, and therefore the bushing 240 is made of plastic. This also allows for cost reduction, weight reduction, and noise reduction.

[0058] Similarly, provided that the structural strength requirements of the support frame 110 are met, the support frame 110 can also be made of plastic. Therefore, both the bushing 240 and the support frame 110 can be made of plastic, resulting in lower material costs, better economy, lighter weight, and better noise reduction. Alternatively, the support frame 110 can be made of plastic, while the bushing 240 can be made of metal, which can also achieve cost reduction, weight reduction, and noise reduction, but these will not be elaborated on here.

[0059] Reference Figure 2 As shown, it can be understood that in any of the above embodiments, when the turntable 310 rotates, whether the flexible cable 320 is wound around the turntable 310 or released from the turntable 310, the turntable 310 and the flexible cable 320 are in direct contact and can generate relative motion. Thus, a second kinematic pair is formed between the turntable 310 and the flexible cable 320, which is a movable connection where the two components, the turntable 310 and the flexible cable 320, are in direct contact and generate relative motion. At least one of the turntable 310 and the flexible cable 320 is a plastic component. In this embodiment, to ensure the tensile strength of the flexible cable 320, it is typically a steel wire rope. Therefore, the turntable 310 is made of plastic. In this way, on the one hand, the cost of plastic components is lower, which helps to reduce the material cost of the turntable 310 and improve economic efficiency; on the other hand, for the same volume, the weight of plastic components is lighter, which helps to reduce the weight of the turntable 310, achieving weight reduction and meeting lightweight design requirements. Meanwhile, the contact between the turntable 310 and the flexible cable 320 is a contact between a metal part and a plastic part. The noise generated by the friction between the turntable 310 and the flexible cable 320 is small and not harsh, which helps to reduce the noise during the operation of the lifting component, making it quiet and well-performing.

[0060] Similarly, provided the tensile strength requirements of the flexible cable 320 are met, the flexible cable 320 can also be made of plastic, i.e., a plastic component. Therefore, both the turntable 310 and the flexible cable 320 can be made of plastic components, resulting in lower material costs, better economy, lighter weight, and better noise reduction. Alternatively, the flexible cable 320 can be made of plastic, while the turntable 310 can be made of metal, which can also achieve cost reduction, weight reduction, and noise reduction.

[0061] Reference Figure 1 and Figure 2 As shown, to reduce the risk of the flexible cable 320 disengaging from the receiving groove 311 of the turntable 310, the transmission assembly 300 also includes a limiting block 330. Specifically, the limiting block 330 is fixedly mounted to the housing 120 with screws and is located above the turntable 310, specifically above the receiving groove 311 of the turntable 310. The wall contour of the side of the limiting block 330 facing the turntable 310 matches the outer contour of the turntable 310, i.e., it is an arc-shaped surface. In this way, the limiting block 330 can limit the flexible cable 320, preventing it from disengaging from the receiving groove 311 and improving reliability.

[0062] It is understandable that there is a possibility of contact between the flexible cable 320 and the limiting block 330, and friction between them will generate noise. Typically, the flexible cable 320 is a steel wire rope. Therefore, the limiting block 330 is made of plastic. This helps reduce the material cost of the limiting block 330, improving economic efficiency; it also helps reduce the weight of the limiting block 330, achieving weight reduction and meeting lightweight design requirements. Simultaneously, the contact between the limiting block 330 and the flexible cable 320 is a metal-plastic contact, resulting in low and non-piercing noise from friction, which helps reduce noise during the operation of the lifting assembly, resulting in quiet operation and good noise reduction performance.

[0063] Reference Figure 6 As shown, it can be understood that the limiting block 330 is provided with multiple grooves 331, for example, the grooves 331 penetrate through both end faces of the limiting block 330 along the axial direction of the drive shaft 230. In this way, the material cost and weight of the limiting block 330 can be further reduced.

[0064] In other embodiments, the limiting block 330 may be a non-plastic part and may be provided with a plurality of grooves 331, which may also reduce the weight of the limiting block 330.

[0065] Reference Figure 1As shown, it can be understood that there are two limiting blocks 330, which respectively limit the two flexible cables 320, improving reliability. Thanks to the housings 120 installed on both the left and right sides, the two limiting blocks 330 are respectively installed on the two housings 120. At the same time, the two limiting blocks 330 are symmetrically arranged about the aforementioned reference plane, and the two limiting blocks 330 have identical structures, which helps to reduce development costs.

[0066] Reference Figure 1 and Figure 2 As shown, the drive shaft 230 includes an intermediate shaft section 231 and two end shaft sections 232. Specifically, the two ends of the intermediate shaft section 231 are rotatably mounted to the second plates 112 of the two support frames 110 via bushings 240. The two end shaft sections 232 are detachably mounted to the two ends of the intermediate shaft section 231, for example, by snap-fitting between the end shaft sections 232 and the intermediate shaft section 231, allowing them to rotate synchronously. It is easy to understand that the two turntables 310 are respectively mounted on the two end shaft sections 232. Therefore, during assembly, the intermediate shaft section 231 can be first mounted to the two support frames 110, and then the two end shaft sections 232 can be mounted to the ends of the intermediate shaft section 231. This reduces the installation difficulty of the drive shaft 230 and facilitates assembly.

[0067] Reference Figure 2 As shown, it is understandable that, since only the end shaft section 232 is connected to the turntable 310, the structural strength requirement of the end shaft section 232 is higher than that of the intermediate shaft section 231. By setting the drive shaft 230 as a split structure of the intermediate shaft section 231 and the two end shaft sections 232, the intermediate shaft section 231 and the end shaft sections 232 can adopt different structural forms. Specifically, the end shaft sections 232 are set as solid structures to ensure that the structural strength meets the requirements and is stably connected to the turntable 310, while the intermediate shaft section 231 is set as a hollow tube structure, such as a stainless steel tube or an iron tube. This can reduce the amount of material used in the drive shaft 230, reduce costs, improve economy, and at the same time significantly reduce the weight of the drive shaft 230, achieving weight reduction and meeting the requirements of lightweight design.

[0068] The storage cabinet of the second aspect of this utility model includes a cabinet body and a shelf of the first aspect of this utility model. The storage cabinet includes, but is not limited to, a refrigerator, a freezer, and storage equipment for placing objects, and the shelf is installed inside the cabinet body.

[0069] Since the storage cabinet adopts all the technical solutions of the shelves in the above embodiments, it has at least all the beneficial effects brought about by the technical solutions in the above embodiments.

[0070] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A shelf, characterized in that, include: The mounting base includes a support frame and a housing mounted on the support frame; The drive assembly includes a drive component, a transmission component, and a transmission shaft. The transmission shaft is rotatably mounted on the support frame and passes through the housing. The transmission component is disposed inside the housing. The drive component is mounted on the support frame and is connected to the transmission shaft via the transmission component. Storage components; A transmission component is connected between the transmission shaft and the storage component to drive the storage component to rise and fall.

2. The shelf according to claim 1, characterized in that: The support frame is made of metal, and the housing is made of plastic.

3. The shelf according to claim 1 or 2, characterized in that: The housing includes an end plate and an annular side plate. One end of the annular side plate is mounted on the support frame, and the end plate is mounted on the other end of the annular side plate. The end plate has a through hole, and the drive shaft passes through the through hole.

4. The shelf according to claim 3, characterized in that: The end plate has recesses on both sides along its thickness direction, the recesses are arranged around the through hole, the transmission assembly is located on the side of the end plate away from the annular side plate, and part of the structure of the transmission assembly is accommodated in the recesses located on the side of the end plate away from the annular side plate.

5. The shelf according to claim 1, characterized in that: A first kinematic pair is formed between the drive shaft and the support frame, and the components forming the first kinematic pair include plastic parts.

6. The shelf according to claim 5, characterized in that: The drive assembly further includes a bushing, which is fixedly installed on one of the support frame and the drive shaft, and the other is rotatably engaged with the bushing. The bushing is one of the components forming the first kinematic pair.

7. The shelf according to claim 1, characterized in that: The transmission assembly includes a turntable and a flexible cable. The turntable is mounted on the transmission shaft, and the flexible cable is wound around the turntable. One end of the flexible cable is fixed to the turntable, and the other end is connected to the placement assembly.

8. The shelf according to claim 7, characterized in that: A second kinematic pair is formed between the turntable and the flexible cable, and the components forming the second kinematic pair include plastic parts.

9. The shelf according to claim 7, characterized in that: The transmission assembly further includes a limiting block, which is mounted on the housing and located above the turntable. The limiting block is used to limit the flexible cable and is configured as a plastic part; and / or, the limiting block is provided with a plurality of grooves.

10. The shelf according to claim 1, characterized in that: The number of mounting bases and transmission assemblies are both two sets. The transmission shaft is rotatably mounted on the support frame of the two sets of mounting bases. The two sets of transmission assemblies are respectively mounted at both ends of the transmission shaft and located on opposite sides of the two sets of mounting bases. Both sets of transmission assemblies are connected to the placement assembly. The two sets of mounting bases are symmetrically arranged about a reference plane perpendicular to the transmission shaft. The two sets of transmission assemblies are symmetrically arranged about the reference plane.

11. A locker, characterized in that, It includes a cabinet and a shelf as described in any one of claims 1 to 10, wherein the shelf is disposed within the cabinet.

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