Rack and refrigerator

Abstract

The utility model relates to the technical field of refrigerators, and discloses a rack which comprises a rack body. The sliding mechanism comprises a sliding rail, and the shelf body can ascend and descend along the sliding rail; the driving module comprises a reel and a pull rope, and the pull rope comprises a main rope section, a first rope section and a second rope section; wherein the first end of the main rope section is connected to the reel, the first end of the first rope section and the first end of the second rope section are both connected to the second end of the main rope section, and the second end of the first rope section and the second end of the second rope section are connected to the two sides of the shelf body respectively; in addition, when the reel rotates, the main rope section is wound or released, and then the shelf body is synchronously pulled to ascend and descend through the first rope section and the second rope section. The utility model further discloses the refrigerator.

Description

Technical Field

[0001] This application relates to the technical field of refrigerators, for example, to a shelf and a refrigerator. Background Art

[0002] A refrigerator is a refrigeration device that maintains a constant low temperature, used to keep food or other items in a constant low temperature state. The core components of a refrigerator include a refrigeration system and a storage box. Through the refrigeration system, a low temperature environment can be continuously and stably provided for the storage box, thus meeting people's needs for food preservation and storage.

[0003] Related technologies disclose a refrigerator with a liftable shelf inside. The shelf includes a shelf body, and an electric motor is used to drive a wire winding wheel to rotate. The wire winding wheel directly winds two independent pull ropes to drive the shelf body to lift.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related technologies:

[0005] The wire winding wheel needs to wind two independent pull ropes at the same time, and the number of winding turns is small, resulting in a small moving distance of the shelf body. Moreover, the stability of the shelf body during the lifting process is poor.

[0006] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of this application, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Utility Model

[0007] To have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. This summary is not a general review, nor is it intended to identify key / important constituent elements or delineate the protection scope of these embodiments, but rather serves as a preface to the subsequent detailed description.

[0008] The embodiments of the present disclosure provide a shelf and a refrigerator, which solve the problems of a small moving distance and poor stability of the shelf body.

[0009] In some embodiments, the shelf includes:

[0010] A shelf body;

[0011] A sliding mechanism, including a slide rail, and the shelf body can be lifted and lowered along the slide rail;

[0012] A driving module, including a wire winding wheel and a pull rope, and the pull rope includes a main rope section, a first rope section, and a second rope section;

[0013] Among them, the first end of the main rope segment is connected to the winding wheel, the first ends of the first rope segment and the second rope segment are both connected to the second end of the main rope segment, and the second ends of the first rope segment and the second rope segment are respectively connected to both sides of the shelf body; moreover, when the winding wheel rotates, it winds or releases the main rope segment, and then synchronously pulls the shelf body to lift or lower through the first rope segment and the second rope segment.

[0014] Optionally, the first rope segment is connected to the first side of the shelf body through a first fixed pulley, and the second rope segment is connected to the second side of the shelf body through a second fixed pulley;

[0015] Moreover, the installation heights of the first fixed pulley and the second fixed pulley are the same.

[0016] Optionally, the winding wheel is arranged above the middle of the first fixed pulley and the second fixed pulley, so that the main rope segment, the first rope segment and the second rope segment form an inverted Y shape.

[0017] Optionally, the winding wheel is arranged below the middle of the first fixed pulley and the second fixed pulley, so that the main rope segment, the first rope segment and the second rope segment form an upright Y shape.

[0018] Optionally, the lengths of the first rope segment and the second rope segment are the same.

[0019] Optionally, the included angle formed by the first rope segment around the first fixed pulley is α1, the included angle formed by the second rope segment around the second fixed pulley is α2, and α1 = α2.

[0020] Optionally, the included angle formed by the first rope segment around the first fixed pulley is α1, and 45° ≤ α1 ≤ 135°; and / or,

[0021] The included angle formed by the second rope segment around the second fixed pulley is α2, and 45° ≤ α2 ≤ 135°.

[0022] Optionally, a third fixed pulley is provided between the first end of the first rope segment and the first fixed pulley, and a fourth fixed pulley is provided between the first end of the second rope segment and the second fixed pulley;

[0023] Moreover, the installation heights of the third fixed pulley and the fourth fixed pulley are the same.

[0024] Optionally, the two slide rails are arranged in parallel, both sides of the shelf body are respectively connected to the slide rails through a slider, and movable pulleys are provided on both sliders;

[0025] Moreover, the first rope segment and the second rope segment are respectively connected to both sides of the shelf body through the corresponding movable pulleys.

[0026] The shelf and the refrigerator provided by the embodiments of the present disclosure can achieve the following technical effects:

[0027] When the winding wheel rotates and winds the main rope segment, the effective length of the main rope segment shortens. The effective length refers to the length of the unwound part of the main rope segment. When the main rope segment shortens, the rope shelf body is synchronously pulled along the slide rail to rise through the first rope segment and the second rope segment respectively. When the winding wheel rotates and releases the main rope segment, the effective length of the main rope segment extends. When the main rope segment extends, the shelf body slides downward along the slide rail under the action of gravity. Here, the pulling rope adopts a three-segment structure, with the main rope segment as the core. The winding wheel can wind multiple turns of the main rope segment, thereby increasing the moving distance of the shelf body. The first rope segment and the second rope segment are used as two branches to synchronously pull the shelf body, thereby improving the stability of the lifting of the shelf body.

[0028] The above general description and the following description are only exemplary and explanatory and are not used to limit the present application. Brief Description of the Drawings

[0029] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation, and among them:

[0030] Figure 1 is a schematic structural diagram of a storage rack provided by an embodiment of the present disclosure;

[0031] Figure 2 is a schematic diagram of a pulling rope layout provided by an embodiment of the present disclosure;

[0032] Figure 3 is a schematic structural diagram of a storage rack provided by an embodiment of the present disclosure;

[0033] Figure 4 is a schematic diagram of another pulling rope layout provided by an embodiment of the present disclosure;

[0034] Figure 5 is a schematic structural diagram of a movable pulley provided by an embodiment of the present disclosure;

[0035] Figure 6 is a schematic diagram of a layout of a tension sensor provided by an embodiment of the present disclosure;

[0036] Figure 7 is a schematic diagram of another layout of a tension sensor provided by an embodiment of the present disclosure;

[0037] Figure 8 is a schematic structural diagram of a tension sensor provided by an embodiment of the present disclosure.

[0038] Reference Numerals:

[0039] 100, shelf body; 110, slide rail; 120, slider; 130, movable pulley;

[0040] 200, Pull rope; 210, First rope segment; 220, Second rope segment; 230, Main rope segment; 240, Motor;

[0041] 300, Winding wheel; 310, First fixed pulley; 320, Second fixed pulley; 330, Third fixed pulley; 340, Fourth fixed pulley;

[0042] 400, Tensile sensor. Specific implementation manners

[0043] In order to more comprehensively understand the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The attached drawings are only for reference and explanation purposes and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, numerous details are provided to give a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be shown in a simplified manner to simplify the drawings.

[0044] In the embodiments of the present disclosure, the terms "first", "second", etc. in the specification, claims and the above-mentioned drawings are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to describe the embodiments of the present disclosure here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0045] In the embodiments of the present disclosure, the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe the embodiments of the present disclosure and their embodiments and are not used to limit that the indicated devices, elements or components must have a specific orientation or be constructed and operated in a specific orientation. And, in addition to being able to represent an orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0046] In addition, the terms "arranged", "connected" and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0047] Unless otherwise specified, the term "a plurality of" means two or more than two.

[0048] In the embodiments of the present disclosure, the character " / " indicates that the objects before and after are in an "or" relationship. For example, A / B means: A or B.

[0049] The term "and / or" is an associative relationship describing an object, indicating that three relationships can exist. For example, A and / or B means: A or B, or, the three relationships of A and B.

[0050] It should be noted that, without conflict, the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

[0051] The embodiments of the present disclosure provide a refrigerator, including a shelf.

[0052] Combined Figure 1-8 As shown, the embodiments of the present disclosure provide a shelf, including a shelf body 100, a sliding mechanism and a driving module. As Figure 1 shown, the sliding mechanism includes a slide rail 110, and the shelf body 100 can be lifted and lowered along the slide rail 110; the driving module includes a winding wheel 300 and a pulling rope 200, and the pulling rope 200 includes a main rope segment 230, a first rope segment 210 and a second rope segment 220; wherein, the first end of the main rope segment 230 is connected to the winding wheel 300, the first ends of the first rope segment 210 and the second rope segment 220 are both connected to the second end of the main rope segment 230, and the second ends of the first rope segment 210 and the second rope segment 220 are respectively connected to both sides of the shelf body 100; and, when the winding wheel 300 rotates, it winds or releases the main rope segment 230, and further synchronously pulls the shelf body 100 to lift or lower through the first rope segment 210 and the second rope segment 220.

[0053] In this embodiment, when the winding wheel 300 rotates and winds the main rope segment 230, the effective length of the main rope segment 230 is shortened. The effective length refers to the length of the non-wound part of the main rope segment 230. When the main rope segment 230 is shortened, the shelf body 100 is synchronously pulled along the slide rail 110 through the first rope segment 210 and the second rope segment 220 to rise. When the winding wheel 300 rotates and releases the main rope segment 230, the effective length of the main rope segment 230 is extended. When the main rope segment 230 is extended, the shelf body 100 slides downward along the slide rail 110 under the action of gravity. Here, the pulling rope 200 adopts a three-section structure, with the main rope segment 230 as the core, and the winding wheel 300 can wind multiple turns of the main rope segment 230, thereby increasing the moving distance of the shelf body 100. The first rope segment 210 and the second rope segment 220 are used as two branches to synchronously pull the shelf body 100, thereby improving the stability of the lifting and lowering of the shelf body 100.

[0054] Optionally, asFigure 2 As shown, the first rope segment 210 is connected to the first side of the shelf body 100 through the first fixed pulley 310, and the second rope segment 220 is connected to the second side of the shelf body 100 through the second fixed pulley 320; moreover, the mounting heights of the first fixed pulley 310 and the second fixed pulley 320 are the same.

[0055] In this embodiment, since the mounting heights of the two fixed pulleys are the same, it can ensure that the first rope segment 210 and the second rope segment 220 maintain the same tension when pulling the shelf body 100, which is beneficial to avoiding the inclination or shaking of the shelf body 100 caused by uneven rope segment tension. Moreover, since the fixed pulley can smoothly guide the movement of the rope segment, the resistance and friction of the first rope segment 210 and the second rope segment 220 during the lifting and lowering process are reduced, which is beneficial to improving the lifting efficiency of the shelf body 100.

[0056] Optionally, as Figure 1 and Figure 2 shown, the winding wheel 300 is arranged above the middle of the first fixed pulley 310 and the second fixed pulley 320, so that the main rope segment 230, the first rope segment 210 and the second rope segment 220 form an inverted Y shape.

[0057] In this embodiment, the layout of the shelf is, from top to bottom in sequence: the winding wheel 300, the first fixed pulley 310 and the second fixed pulley 320 with the same height, the shelf body 100. Moreover, the winding wheel 300 is arranged above the middle of the first fixed pulley 310 and the second fixed pulley 320, having a certain symmetry, so that the tension of the main rope segment 230 can be evenly transmitted to the first rope segment 210 and the second rope segment 220. Moreover, the inverted Y-shaped layout is relatively reasonable, reducing the bending and crossing of the pulling rope 200.

[0058] Optionally, as Figure 3 and Figure 4 shown, the winding wheel 300 is arranged below the middle of the first fixed pulley 310 and the second fixed pulley 320, so that the main rope segment 230, the first rope segment 210 and the second rope segment 220 form an upright Y shape.

[0059] In this embodiment, the layout of the shelf is, from top to bottom in sequence: the first fixed pulley 310 and the second fixed pulley 320 with the same height, the winding wheel 300, the shelf body 100; or, the first fixed pulley 310 and the second fixed pulley 320 with the same height, the shelf body 100, the winding wheel 300; moreover, the winding wheel 300 is arranged below the middle of the first fixed pulley 310 and the second fixed pulley 320, having a certain symmetry, so that the tension of the main rope segment 230 can be evenly transmitted to the first rope segment 210 and the second rope segment 220. Moreover, the upright Y-shaped layout is relatively reasonable, reducing the bending and crossing of the pulling rope 200.

[0060] Optionally, the lengths of the first rope segment 210 and the second rope segment 220 are the same. Here, the design of the same length ensures the synchronization of the lifting of the shelf body 100 and prevents the shelf body 100 from tilting.

[0061] Optionally, as Figure 2 shown, the included angle formed by the first rope segment 210 around the first fixed pulley 310 is α1, and the included angle formed by the second rope segment 220 around the second fixed pulley 320 is α2, and α1 = α2.

[0062] In this embodiment, since the two included angles are equal, the first rope segment 210 and the second rope segment 220 present a symmetric layout after bypassing the corresponding fixed pulleys, which is beneficial to ensuring that the pulling forces on both sides of the shelf body 100 are balanced during the lifting process. If the included angles of the two rope segments are not equal, it may cause the shelf body 100 to be subjected to eccentric loading, that is, the force on one side is greater than the force on the other side. And equal included angles can effectively reduce this eccentric loading phenomenon and improve the stability and safety of the shelf.

[0063] Optionally, the included angle formed by the first rope segment 210 around the first fixed pulley 310 is α1, and 45° ≤ α1 ≤ 135°.

[0064] Here, the value of α1 can be selected from 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85°, 90°, 95°, 100°, 105°, 110°, 115°, 120°, 125°, 130° or 135°.

[0065] Exemplarily, the winding wheel 300 is arranged below the first fixed pulley 310, and the first rope segment 210 bypasses the first fixed pulley 310 from bottom to top, and α1 = 45°.

[0066] Another exemplarily, the winding wheel 300 is arranged above the first fixed pulley 310, and the first rope segment 210 bypasses the first fixed pulley 310 from top to bottom, and α1 = 135°.

[0067] Optionally, the included angle formed by the second rope segment 220 around the second fixed pulley 320 is α2, and 45° ≤ α2 ≤ 135°.

[0068] Here, the value of α2 can be selected from 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85°, 90°, 95°, 100°, 105°, 110°, 115°, 120°, 125°, 130° or 135°.

[0069] Exemplarily, the winding wheel 300 is arranged below the first fixed pulley 310, and the second rope segment 220 bypasses the second fixed pulley 320 from bottom to top, and α2 = 45°.

[0070] Another example is that the winding wheel 300 is arranged above the second fixed pulley 320, and the second rope segment 220 bypasses the second fixed pulley 320 from top to bottom, and α2 = 135°.

[0071] Optionally, as Figure 3 shown, a third fixed pulley 330 is provided between the first end of the first rope segment 210 and the first fixed pulley 310, and a fourth fixed pulley 340 is provided between the first end of the second rope segment 220 and the second fixed pulley 320; and, the installation heights of the third fixed pulley 330 and the fourth fixed pulley 340 are the same.

[0072] In this embodiment, adding the third fixed pulley 330 and the fourth fixed pulley 340 can further disperse the tension on the corresponding rope segments. When the rope segments bypass the corresponding fixed pulleys, the tension will be transmitted between multiple pulleys, which helps to reduce the tension borne by a single pulley or rope segment, thereby improving the stability and safety of the system. And, the main function of the fixed pulley is to change the direction of the force. By adding the third fixed pulley 330 and the fourth fixed pulley 340, the direction of the rope segments can be adjusted more flexibly, which is beneficial to meeting specific layout requirements.

[0073] Exemplarily, as Figure 4 shown, the winding wheel 300 is arranged below the first fixed pulley 310, and the arrangement height of the third fixed pulley 330 is below the first fixed pulley 310 and above the winding wheel 300. In this way, the first rope segment 210 first bypasses the third fixed pulley 330 from bottom to top, and then bypasses the first fixed pulley 310 from bottom to top, and then is connected to the first side of the shelf body 100.

[0074] Another example is that the winding wheel 300 is arranged above the first fixed pulley 310, and the arrangement height of the third fixed pulley 330 is above the first fixed pulley 310 and below the winding wheel 300. In this way, the first rope segment 210 first bypasses the third fixed pulley 330 from top to bottom, and then bypasses the first fixed pulley 310 from top to bottom, and then is connected to the first side of the shelf body 100.

[0075] Optionally, the two slide rails 110 are arranged in parallel, and both sides of the shelf body 100 are respectively connected to the slide rails 110 through a slider 120, and a movable pulley 130 is provided on each of the two sliders 120; and, the first rope segment 210 and the second rope segment 220 are respectively connected to both sides of the shelf body 100 through the corresponding movable pulleys 130.

[0076] In this embodiment, as Figure 5As shown, the first rope segment 210 is connected to the corresponding slider 120 through the corresponding movable pulley 130, and the second rope segment 220 is connected to the corresponding slider 120 through the corresponding movable pulley 130. In this way, when the main rope segment 230 is wound around the wire reel 300, the two movable pulleys 130 move upward along the corresponding rope segments respectively, thereby driving the shelf body 100 to rise. Moreover, due to the force-saving characteristic of the movable pulley 130, the motor 240 can drive the movement of the shelf body 100 with a smaller driving force, which is beneficial to reducing the torque of the motor 240.

[0077] Combined with Figure 1-8 As shown, the embodiment of the present disclosure provides a storage rack, including a shelf body 100, a sliding mechanism, a driving module and an overweight module. As Figure 5 shown, the sliding mechanism includes a slide rail 110, and the shelf body 100 can be lifted and lowered along the slide rail 110; the driving module includes a motor 240 and a pull rope 200, and the motor 240 drives the shelf body 100 to lift and lower through the pull rope 200; the overweight module includes a controller and a tension sensor 400, and the controller is electrically connected to the tension sensor 400 and the motor 240; the tension sensor 400 is used to detect the load-bearing tension of the pull rope 200, and the controller is configured to control the start and stop of the motor 240 according to the load-bearing tension.

[0078] In this embodiment, the shelf body 100 is lifted and lowered by the motor 240 and the pull rope 200, the load-bearing tension of the pull rope 200 is monitored in real time by the tension sensor 400, and the controller controls the start and stop of the motor 240 according to the load-bearing tension. In this way, it is possible to monitor whether the shelf body 100 is overweight, effectively prevent the motor 240 from overloading, avoid excessive wear and damage of the motor 240 and the transmission components, and ensure the safety and stability of the lifting of the shelf body 100. Here, the layout of the motor 240 and the pull rope 200 is not specifically limited.

[0079] Optionally, as Figure 5 shown, the side of the shelf body 100 is connected to the slide rail 110 through a slider 120, and a movable pulley 130 is provided on the slider 120; the pull rope 200 is connected to the shelf body 100 through the movable pulley 130; moreover, the motor 240 drives the movable pulley 130 to move through the pull rope 200, and then the movable pulley 130 drives the shelf body 100 to lift and lower through the slider 120. In this way, due to the force-saving characteristic of the movable pulley 130, the motor 240 can drive the movement of the shelf body 100 with a smaller driving force, which is beneficial to reducing the torque of the motor 240.

[0080] Optionally, the driving module further includes a wire reel 300, and the motor 240 is used to drive the wire reel 300 to rotate; moreover, the first end of the pull rope 200 is connected to the wire reel 300, and the second end bypasses the movable pulley 130 from bottom to top and is fixed.

[0081] In this embodiment, when the winding wheel 300 winds the pulling rope 200, the effective length of the pulling rope 200 is shortened. When the pulling rope 200 is shortened, it drives the movable pulley 130 to move upward along the pulling rope 200, and then the movable pulley 130 drives the shelf body 100 to rise through the slider 120.

[0082] Optionally, as Figure 6 shown, the tension sensor 400 is arranged in the middle of the pulling rope 200 and is located between the winding wheel 300 and the movable pulley 130.

[0083] In this embodiment, the tension sensor 400 is placed in the middle of the pulling rope 200, and when the length of the pulling rope 200 changes, the tension sensor 400 moves synchronously. The tension sensor 400 measures the load tension borne by the pulling rope 200, and then transmits the load tension to the controller.

[0084] Optionally, as Figure 7 and Figure 8 shown, the tension sensor 400 is arranged at the second end of the pulling rope 200, and the second end of the pulling rope 200 is fixed through the tension sensor 400.

[0085] In this embodiment, the tension sensor 400 is arranged at the second end of the pulling rope 200 and is fixedly arranged. When the length of the pulling rope 200 changes, the tension sensor 400 does not move. In this way, the tension sensor 400 is relatively stable and is not easily affected by vibration and impact, which is beneficial to maintaining the stability and accuracy of the measurement results.

[0086] Optionally, the controller is configured to control the motor 240 to stop when the load tension is greater than the preset tension.

[0087] In this embodiment, the tension sensor 400 transmits the tension signal to the controller, and the controller compares the received load tension with the preset tension. When the load tension is greater than the preset tension, it means that the load on the shelf body 100 is too heavy. At this time, the controller controls the motor 240 to stop, and the shelf body 100 stops lifting and lowering. After removing some items on the shelf body 100 and making the load tension less than or equal to the preset tension. At this time, the controller controls the motor 240 to start, and the shelf body 100 can continue to lift and lower.

[0088] Optionally, the controller is configured to convert the load tension into the load weight, and control the motor 240 to stop when the load weight is greater than the preset weight.

[0089] In this embodiment, the tension sensor 400 transmits the tension signal to the controller. The controller converts the tension signal into a weight signal based on an internal algorithm and further compares the load weight with a preset weight. When the load weight is greater than the preset weight, it means that the load-bearing capacity of the shelf body 100 is overloaded. At this time, the controller controls the motor 240 to stop, and the shelf body 100 stops lifting. By removing some items on the shelf body 100 and making the load weight less than or equal to the preset weight. At this time, the controller controls the motor 240 to start, and the shelf body 100 can continue to lift.

[0090] Optionally, as Figure 6 and Figure 7 shown, the two slide rails 110 are arranged in parallel. Both sides of the shelf body 100 are respectively connected to the slide rails 110 through a slider 120, and a movable pulley 130 is provided on each of the two sliders 120; the pulling rope 200 includes a first rope segment 210 and a second rope segment 220, and the first rope segment 210 and the second rope segment 220 are respectively connected to both sides of the shelf body 100 through the corresponding movable pulleys 130. The overweight module includes two tension sensors 400, which are respectively used to detect the load tensions of the first rope segment 210 and the second rope segment 220; and, the controller is configured to: control the motor 240 to stop when the difference between the two load tensions is greater than a preset threshold.

[0091] In this embodiment, by using two tension sensors 400 to respectively detect the load tensions of the first rope segment 210 and the second rope segment 220, the balance state of the shelf body 100 during the lifting process can be grasped in real time. The load tension of the first rope segment 210 is denoted as the first tension, and the load tension of the second rope segment 220 is denoted as the second tension. When the difference between the first tension and the second tension is greater than a preset threshold, it means that the shelf body 100 has tilted or there is a risk of tilting. At this time, the controller controls the motor 240 to stop, and the shelf body 100 stops lifting. By removing or adjusting the position of the items on the shelf body 100 and making the difference between the first tension and the second tension less than or equal to the preset threshold. At this time, the controller controls the motor 240 to start, and the shelf body 100 can continue to lift.

[0092] Optionally, the overweight module further includes an alarm. The alarm is electrically connected to the controller and is used to issue an alarm.

[0093] In this embodiment, when the load tension is greater than the preset gravity, or when the load weight is greater than the preset weight, or when the difference between the two load tensions is greater than the preset threshold, the controller controls the alarm to issue an alarm, thereby reminding the user that the shelf body 100 is overweight or the shelf body 100 is tilted.

[0094] In this embodiment, the refrigerator has a box body, and a shelf is arranged inside the box body. The upper part of the shelf body 100 is used for placing items. Moreover, once the shelf body 100 is out of position, it can be timely detected through the anti-tipping mechanism composed of microswitches, so as to further operate on the shelf. In this way, it is beneficial to protect the safety of the items in the refrigerator and reduce unnecessary losses.

[0095] The above description and the drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural and other changes. The embodiments only represent possible variations. Unless explicitly required, the individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A shelf, characterized in that: include: Shelf body (100); The sliding mechanism comprises a slide rail (110), and the shelf body (100) can be raised and lowered along the slide rail (110); A driving module comprises a winding wheel (300) and a pull rope (200), wherein the pull rope (200) comprises a main rope segment (230), a first rope segment (210) and a second rope segment (220); The first end of the main rope segment (230) is connected to the winding wheel (300), the first end of the first rope segment (210) and the first end of the second rope segment (220) are both connected to the second end of the main rope segment (230), and the second end of the first rope segment (210) and the second end of the second rope segment (220) are respectively connected to two sides of the shelf body (100); and when the winding wheel (300) rotates, it winds or releases the main rope segment (230), thereby synchronously pulling the shelf body (100) up and down through the first rope segment (210) and the second rope segment (220).

2. The shelf according to claim 1, characterized in that: The first rope segment (210) is connected to the first side of the shelf body (100) through a first fixed pulley (310), and the second rope segment (220) is connected to the second side of the shelf body (100) through a second fixed pulley (320); Furthermore, the first fixed pulley (310) and the second fixed pulley (320) are installed at the same height.

3. The shelf according to claim 2, characterized in that: The winding wheel (300) is arranged above the middle of the first fixed pulley (310) and the second fixed pulley (320), so that the main rope segment (230), the first rope segment (210) and the second rope segment (220) are in an inverted Y shape.

4. The shelf according to claim 2, characterized in that: The winding wheel (300) is arranged below the middle of the first fixed pulley (310) and the second fixed pulley (320), so that the main rope segment (230), the first rope segment (210) and the second rope segment (220) are in an upright Y shape.

5. The shelf according to any one of claims 2 to 4, characterized in that: The first rope segment (210) and the second rope segment (220) have the same length.

6. The shelf according to any one of claims 2 to 4, characterized in that: The angle formed by the first rope segment (210) around the first fixed pulley (310) is α1, the angle formed by the second rope segment (220) around the second fixed pulley (320) is α2, and α1=α2.

7. The shelf according to any one of claims 2 to 4, characterized in that: The angle formed by the first rope segment (210) around the first fixed pulley (310) is α1, and 45°≤α1≤135°; and / or, The angle formed by the second rope segment (220) around the second fixed pulley (320) is α2, and 45°≤α2≤135°.

8. The shelf according to any one of claims 2 to 4, characterized in that: A third fixed pulley (330) is provided between the first end of the first rope segment (210) and the first fixed pulley (310), and a fourth fixed pulley (340) is provided between the first end of the second rope segment (220) and the second fixed pulley (320); Furthermore, the third fixed pulley (330) and the fourth fixed pulley (340) are installed at the same height.

9. The shelf according to any one of claims 1 to 4, characterized in that: The two slide rails (110) are arranged in parallel, and the two sides of the shelf body (100) are connected to the slide rails (110) through a slider (120) respectively, and the two sliders (120) are both provided with a movable pulley (130); Furthermore, the first rope segment (210) and the second rope segment (220) are respectively connected to two sides of the shelf body (100) through corresponding movable pulleys (130).

10. A refrigerator, characterized in that: The invention comprises a shelf as claimed in any one of claims 1 to 9.

Images