Refrigerator

Abstract

The invention discloses a refrigerator which comprises a refrigerator body and a shelf arranged in the refrigerator body. The lifting mechanism comprises a sliding block capable of sliding up and down and a pulley arranged on the sliding block, and the shelf is fixed on the sliding block; the driving mechanism comprises a motor, a reel and a pull rope, the motor is fixed on the box body, the first end of the pull rope is fixed on the reel, and the second end of the pull rope is fixed on the box body; the motor drives the reel to rotate so as to wind or unwind the pull rope; the pulley is hung on the pull rope, and when the reel winds the pull rope, the pull rope drives the pulley to move upwards. According to the invention, the vertical adjustment of the shelf can be automatically and flexibly realized, and the power is halved through the cooperation of the pulley and the pull rope, so that the motor drives the shelf to move with smaller driving force.

Description

Technical Field

[0001] The invention relates to refrigeration equipment, in particular to a refrigerator. Background Art

[0002] As the quality of life continues to improve, multi-door refrigerators with large capacity, multiple functions and classified storage are becoming more and more popular, and people's requirements for the intelligence of refrigerator products are also getting higher and higher.

[0003] Most of the shelves of existing refrigerator products are fixed in position. Usually, ribs are formed on opposite sides of the refrigerator liner, and the shelves can be placed on the ribs. In order to facilitate user adjustment, several ribs are usually reserved in the design of the refrigerator to adjust the position of the shelf.

[0004] However, the height between the shelves cannot be adjusted flexibly, the storage space has certain limitations, the space utilization rate inside the refrigerator is low, and many large foods cannot be placed, which affects the user experience. In addition, during the adjustment process, it is generally necessary to clean up the items placed on the shelves before adjusting, which causes inconvenience in use. Summary of the invention

[0005] The purpose of the present invention is to provide a refrigerator to solve the deficiencies in the prior art. The refrigerator can automatically and flexibly adjust the shelves up and down, and halve the power through the cooperation of pulleys and pull ropes, so that the motor drives the movement of the shelves with a smaller driving force.

[0006] The refrigerator provided by the present invention comprises:

[0007] Box,

[0008] A shelf is disposed in the box;

[0009] A lifting mechanism, comprising a sliding block that can slide up and down and a pulley arranged on the sliding block, and the shelf is fixed on the sliding block;

[0010] The driving mechanism comprises a motor, a winding wheel and a pull rope, wherein the motor is fixed on the box, the first end of the pull rope is fixed on the winding wheel, and the second end of the pull rope is fixed on the box; the motor drives the winding wheel to rotate to wind or unwind the pull rope;

[0011] The pulley is suspended on the pull rope, and when the winding wheel winds the pull rope, the pull rope drives the pulley to move upward.

[0012] Furthermore, the lifting mechanism comprises a pair of sliders arranged opposite to each other, the two sides of the shelf are respectively fixed on the corresponding sliders, and each slider is provided with the pulley;

[0013] The driving mechanism is provided with two pull ropes in total, and the two pull ropes are used to hang corresponding pulleys respectively, and the winding wheel controls the winding or unwinding of the two pull ropes at the same time.

[0014] Furthermore, the winding wheel has a wheel body, and a rope groove is arranged on the circumferential side wall of the wheel body. When the winding wheel winds the pull rope, the pull rope is accommodated in the rope groove; two rope grooves are provided, and the two rope grooves are arranged along the axial direction of the wheel body, and the two rope grooves are respectively adapted to the two pull ropes.

[0015] Furthermore, the two side surfaces of the winding wheel which are arranged opposite to each other in the axial direction of the wheel body are respectively provided with pull rope positioning holes, and the first end of the pull rope is fixed in the pull rope positioning hole; the pull rope positioning hole is communicated with the rope groove;

[0016] The two pull rope positioning holes are centrally symmetrically arranged with the center of the wheel body as the center.

[0017] Furthermore, the lifting mechanism also includes a guide member arranged on the box body, and the connecting line between the guide member and the pulley is approximately extended along the vertical direction.

[0018] Furthermore, the guide member includes a fixed pulley; a line connecting the center of the fixed pulley and the center of the winding wheel is approximately extended in the horizontal direction.

[0019] Furthermore, the box body includes an inner liner and a support frame arranged on the inner liner, the support frame is provided with a slide rail that slidably cooperates with the slider, and the slide rail is extended in the vertical direction;

[0020] The support frame also has an upper limit block and a lower limit block which are arranged on the slide rail and arranged in the vertical direction, and the sliding block slides between the upper limit block and the lower limit block.

[0021] Further, the slide rail comprises a slide groove, and opposite side walls of the slide groove are provided with slide rail protrusions arranged opposite to each other, the slide rail protrusions protrude from the side walls of the slide groove into the slide groove, and the slide rail protrusions extend along the extension direction of the slide groove;

[0022] The slider is provided with a roller, and a roller groove matching with the protrusion of the slide rail is formed on the circumferential side wall of the roller;

[0023] The upper limit block and the lower limit block are positioned in the slide groove, and both the upper limit block and the lower limit block are formed with limit block positioning grooves that are matched with the slide rail protrusions.

[0024] Furthermore, the lifting mechanism also has a counterweight block arranged at the bottom of the sliding block;

[0025] Or the lifting mechanism further comprises an elastic member, wherein the elastic member comprises a fixed end fixed to the frame and a movable end fixed to the slider, and the elastic force accumulated by the elastic member drives the movable end to move toward the fixed end.

[0026] Furthermore, the driving mechanism also has a motor housing and a transmission gear set arranged in the motor housing, the motor is arranged in the motor housing, and the motor drives the winding wheel through the transmission gear set; the motor housing is fixed on the box body;

[0027] An escape groove arranged away from the shelf is formed on the box body at a position opposite to the motor housing, and the motor housing is positioned in the escape groove.

[0028] Furthermore, the refrigerator also has a shock-absorbing pad arranged between the motor housing and the box body.

[0029] Furthermore, the transmission gear group includes a worm arranged on the output shaft of the motor and a turbine matched with the worm, a first transmission gear arranged on the turbine, a second transmission gear meshing with the first transmission gear, and a transmission member arranged coaxially with the winding wheel, and the transmission member is provided with a ring gear combined with the second transmission gear.

[0030] Compared with the prior art, the present invention realizes automatic lifting and lowering adjustment of the shelf through the cooperation of the motor, the winding wheel and the pulley, and through the setting of the pulley, the pulley moves together with the slider that drives the shelf to move synchronously. The pulley is hung on the pull rope and acts as a movable pulley, which can enable the motor to drive the movement of the shelf with a smaller driving force, and can reduce the torque of the motor, thereby reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of a refrigerator disclosed in an embodiment of the present invention;

[0032] Figure 2 It is a structural schematic diagram of a driving mechanism and a shelf in a refrigerator disclosed in an embodiment of the present invention;

[0033] Figure 3 It is a first assembly exploded view of the driving mechanism and the lifting structure in the refrigerator disclosed in the embodiment of the present invention;

[0034] Figure 4 It is a second assembly exploded view of the driving mechanism and the lifting structure in the refrigerator disclosed in the embodiment of the present invention;

[0035] Figure 5 is an exploded view of a driving mechanism in a refrigerator disclosed in an embodiment of the present invention;

[0036] Figure 6It is a schematic diagram of the structure of a wire winding wheel in a refrigerator disclosed in an embodiment of the present invention;

[0037] Figure 7 is a schematic structural diagram of a support frame in a refrigerator disclosed in an embodiment of the present invention;

[0038] Figure 8 is a structural schematic diagram of a driving mechanism and a shelf in a refrigerator disclosed in another embodiment of the present invention;

[0039] Description of reference numerals: 1-box, 10-storage compartment, 11-support frame, 110-limit block positioning groove, 111-upper limit block, 112-lower limit block, 113-slide groove, 114-slide rail protrusion, 12-avoidance groove,

[0040] 2- shelf, 3- lifting mechanism, 31- slider, 311- roller, 3110- roller slide, 32- pulley, 33- guide, 331- fixed pulley, 332- guide bracket, 34- counterweight, 35- elastic member, 351- fixed end, 352- movable end,

[0041] 4-driving mechanism, 41-motor, 42-winding wheel, 421-wheel body, 422-rope groove, 423-rope positioning hole,

[0042] 43-pull rope, 44-motor housing, 45-transmission gear set, 451-worm, 452-turbine, 453-first transmission gear, 454-second transmission gear, 455-transmission member, 456-gear ring,

[0043] 5-Shock-absorbing pads. DETAILED DESCRIPTION

[0044] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, but should not be construed as limiting the present invention.

[0045] An embodiment of the present invention discloses a refrigerator, comprising a box body 1 and a door body arranged on the box body 1, the box body 1 has a storage compartment 10, the door body is used to close the storage compartment 10, a shelf 2 is arranged in the storage compartment 10, the shelf 2 is used to store articles, in order to more flexibly store articles in the prior art, the shelf 2 is generally arranged to be adjustable, so that the user can adjust the position of the shelf 2 according to his own needs to thereby adjust the space in the storage compartment 10.

[0046] In the prior art, the shelf 2 generally needs to be cleaned during adjustment, which is inconvenient. The refrigerator disclosed in the embodiment of the present invention can electrically adjust the position of the shelf when the shelf carries items, thereby better meeting the needs of users.

[0047] The refrigerator of this embodiment is as follows Figure 1-7 As shown, it also includes a lifting mechanism 3 and a driving mechanism 4. The lifting mechanism 3 includes a slider 31 that can slide up and down and a pulley 32 arranged on the slider 31. The shelf 2 is fixed on the slider 31; the shelf 2 moves up and down synchronously with the slider 31.

[0048] The driving mechanism 4 includes a motor 41, a winding wheel 42 and a pull rope 43, the motor 41 is fixed on the box body 1, the first end of the pull rope 43 is fixed on the winding wheel 42, and the second end of the pull rope 43 is fixed on the box body 1; the motor 41 drives the winding wheel 42 to rotate to wind or unwind the pull rope 43; the motor 41 drives the winding wheel 42 to rotate, and the winding wheel 42 is used to wind or unwind the pull rope 43 when rotating, so as to achieve the tightening or loosening of the pull rope 43, and the pull rope 43 realizes the upward sliding of the slider 31 when tightened, and the upward sliding of the slider 31 drives the lifting of the shelf 2.

[0049] The pulley 32 is suspended on the pull rope 43. When the pull rope 43 is wound around the winding wheel 42, the pull rope 43 drives the pulley 32 to move upward. Since the pulley 32 is fixed on the slider 31, it can drive the slider 31 to move upward, and the shelf 2 moves synchronously with the slider 31, so that the pull rope 43 can pull the shelf 2 to move upward.

[0050] When the motor 41 controls the winding wheel 42 to unwind, the shelf 2 is freed from the upward tensile force of the pull rope 43 and moves downward under the action of its own gravity, thereby achieving downward movement adjustment of the shelf 2.

[0051] In this embodiment, the automatic lifting and lowering adjustment of the shelf 2 is realized by the cooperation of the motor 41, the winding wheel 42 and the pull rope 43, and the adjustment can be flexibly made according to actual needs. During the adjustment process, there is no need to clean the items, which is more convenient to use. In addition, by setting the pulley 32, the pulley 32 moves together with the slider 31 that drives the shelf 2 to move synchronously. The pulley 32 is hung on the pull rope 43 and acts as a movable pulley, so that the motor 41 can drive the movement of the shelf 2 with a smaller driving force, and the torque of the motor 41 can be reduced, thereby reducing the cost.

[0052] In this embodiment, the lifting mechanism 3 includes a pair of sliders 31 arranged opposite to each other, and the two sides of the shelf 2 are respectively fixed on the corresponding sliders 31, and each slider 31 is provided with the pulley 32;

[0053] The driving mechanism 4 is provided with two pull ropes 43 , which are used to hang corresponding pulleys 32 , respectively. The winding wheel 42 controls the winding or unwinding of the two pull ropes 43 at the same time.

[0054] In this embodiment, corresponding pull ropes 43 are fixed to both ends of the shelf 2, and the two pull ropes 43 are arranged on the same winding wheel 42. When the winding wheel 42 rotates, the two pull ropes 43 can be synchronously wound or unwound. Such a structural arrangement can reduce the use of parts while achieving synchronous lifting of the shelf 2.

[0055] Of course, in other embodiments, two motors 41 may be provided to control the corresponding pull ropes 43 respectively, so as to control the lifting and lowering of the shelf 2 when the pull ropes 43 are moved.

[0056] In this embodiment, the winding wheel 42 has a wheel body 421, and a rope groove 422 is arranged on the circumferential side wall of the wheel body 421. When the winding wheel 42 is wound around the pull rope, the pull rope 43 is accommodated in the rope groove 422; two rope grooves 422 are provided, and the two rope grooves 422 are arranged along the axial direction of the wheel body 421, and the two rope grooves 422 are respectively adapted to the two pull ropes 43.

[0057] In order to achieve synchronous winding of the two pull ropes 43, two independent rope grooves 422 are provided. The two independent rope grooves 422 are arranged along the axial direction of the wheel body 421, so as to avoid mutual interference between the two pull ropes 43 during the winding process.

[0058] In this embodiment, the winding wheel 42 is provided with rope positioning holes 423 on two side surfaces opposite to each other along the axial direction of the wheel body 421. The wheel body 421 is cylindrical as a whole and has an axial direction. The two side surfaces opposite to each other in the axial direction are actually the top and bottom surfaces of the cylinder.

[0059] The first end of the pull rope 43 is fixed in the pull rope positioning hole 423; the pull rope positioning hole 423 is connected to the rope groove 422; fixing the pull rope 43 on two opposite sides of the wheel body 421 in the axial direction can more conveniently realize the installation and fixation of the pull rope 43. The connection between the pull rope positioning hole 423 and the rope groove 422 is conducive to the winding and fixing of the pull rope on the winding wheel 42.

[0060] In this embodiment, the two pull rope positioning holes 423 are centrally symmetrically arranged with the center of the wheel body 421 as the center.

[0061] The lifting mechanism 3 further includes a guide member 33 disposed on the box body 1 , and a line connecting the guide member 33 and the pulley 32 extends approximately along the vertical direction.

[0062] The pull rope 43 is overlapped on the guide member 33 , and the guide member 33 is arranged on the transmission path of the pull rope 43 to change the pulling direction of the pull rope 43 .

[0063] The connecting line between the guide member 33 and the pulley 32 is approximately in the vertical direction, which can better enable the force of the pull rope 43 acting on the slider 31 to be as much in the vertical direction as possible, thereby better realizing the control of the upward movement of the slider 31.

[0064] It should be noted that the approximately vertical direction here may allow a certain small range of angle with the vertical direction, and the above setting is only to make the force acting on the slider 31 upward in the vertical direction as much as possible.

[0065] It should be noted that since two sliders 31 are provided on opposite sides of the shelf 2 , correspondingly, two guide members 33 are also provided, and the two guide members 33 are respectively used to guide two different pull ropes 43 .

[0066] In this embodiment, the guide member 33 includes a fixed pulley 331 and a guide bracket 332, the fixed pulley 331 is rotatably mounted on the guide bracket 332, and the guide bracket 332 is fixed on the box body 1;

[0067] The line connecting the center of the fixed pulley 331 and the center of the winding wheel 42 is approximately extended in the horizontal direction. It should be noted that the approximately horizontal extension here can allow a certain small range of angles with the horizontal direction. The arrangement of the above structure can keep the winding wheel 42 in the same horizontal direction as the fixed pulley 331 as much as possible.

[0068] After the lifting mechanism 3 and the driving mechanism 4 are installed and fixed, it is generally necessary to cover the lifting mechanism 3 and the driving mechanism 4 with an air duct cover. Therefore, the air duct cover needs to consider avoiding the driving mechanism 4 and the lifting mechanism 3 during the design process, that is, the arrangement of the lifting mechanism 3 and the driving mechanism 4 will affect the space design of the air duct cover. Setting the winding wheel 42 relative to the fixed pulley 331 in the horizontal direction can make the whole set of equipment occupy less space in the vertical direction, thereby also occupying less space of the air duct cover.

[0069] In this embodiment, the box body 1 includes an inner container and a support frame 11 arranged on the inner container, and the support frame 11 is provided with a slide rail that slidably cooperates with the slider 31, and the slide rail is extended in the vertical direction;

[0070] The support frame 11 has a connecting plate fixed on the inner wall of the inner tank, and the slide rail is integrally formed with the connecting plate. The support frame 11 also has an upper limit block 111 and a lower limit block 112 arranged on the slide rail and arranged in the vertical direction, and the slider 31 slides between the upper limit block 111 and the lower limit block 112.

[0071] The upper limit block 111 and the lower limit block 112 limit the distance that the slider 31 slides on the support frame 11 . The distance that the slider 31 slides on the support frame 11 also affects the size of the space for adjusting the shelf 2 up and down.

[0072] Therefore, in order to have better adaptability, the positions of the upper limit block 111 and the lower limit block 112 on the support frame 111 are adjustable.

[0073] In this embodiment, one end of the pull rope 43 fixed to the box body 1 can be fixed to the upper limit block 111, and the position of the pull rope 43 on the upper limit block 111 is also adjustable, so that the entire tension state of the pull rope 43 can be changed.

[0074] In this embodiment, the slider 31 is extended in the up-down direction as a whole, and the pulley 32 is arranged on the top of the slider 31 .

[0075] The slide rail includes a slide groove 113, and the slider 31 is slidably set in the slide groove 113. Oppositely set slide rail protrusions 114 are set on the opposite side walls of the slide groove 113. The slide rail protrusions 114 protrude from the side walls of the slide groove 113 into the slide groove 113, and the slide rail protrusions 114 are extended along the extension direction of the slide groove 113.

[0076] The slider 31 is provided with a roller 311, and a roller groove 3110 adapted to the slide rail protrusion 114 is formed on the circumferential side wall of the roller 311; the roller 311 is provided in two groups, each group having a plurality of rollers 311 arranged along the vertical direction, and the two groups of rollers are respectively used for sliding cooperation with the two slide rail protrusions 114 on the opposite sides of the groove 113.

[0077] In order to facilitate the adjustment of the upper limit block 111 and the lower limit block 112 , the upper limit block 111 and the lower limit block 112 are positioned in the slide groove 113 , and the upper limit block 111 and the lower limit block 112 are both formed with a limit block positioning groove 110 that is compatible with the slide rail protrusion 114 .

[0078] In actual use, in order to better control the downward movement and adjustment of the shelf 2, the lifting mechanism 3 also has a counterweight block 34 arranged at the bottom of the slider 31; the setting of the counterweight block 34 can increase the load-bearing capacity of the shelf 2, so that the shelf 2 can have sufficient force to move downward even without any load, so that the pull rope is always in a taut state, thereby better realizing the control of the lifting and lowering of the shelf 2.

[0079] like Figure 8As shown, in another embodiment, the lifting mechanism further has an elastic member 35, the elastic member 35 has a fixed end 351 fixed to the box body 1 and a movable end 352 fixed to the slider 31, and the rebound force accumulated in the elastic member 35 drives the movable end 352 to move toward the fixed end 351.

[0080] In a specific embodiment, the fixed end 351 can be fixed on the support frame 11. The elastic member 35 can be a roll, which includes a housing fixed on the support frame 11 and a spring roll arranged in the housing, one end of the spring roll is fixed on the housing, and the other end of the spring roll is fixed on the slider 31. When the pull rope 43 pulls the slider 31 to slide upward, the spring roll is pulled by the rope and accumulates resilience. After the force of the pull rope 43 pulling the slider 31 is weakened, the slider 31 can move downward under the action of the resilience accumulated by the spring roll.

[0081] like Figure 5 As shown, the driving mechanism 4 further comprises a motor housing 44 and a transmission gear set 45 disposed in the motor housing 44, the motor 41 is disposed in the motor housing 44, and the motor 41 drives the winding wheel 42 through the transmission gear set 45; the motor housing 44 is fixed on the box body 1;

[0082] An escape groove 12 disposed away from the shelf 2 is formed on the box body 1 at a position opposite to the motor housing 44 , and the motor housing 44 is positioned in the escape groove 12 .

[0083] The arrangement of the avoidance groove 12 can prevent the driving mechanism 4 from protruding outward excessively after being installed and fixed, thereby avoiding occupation of the air duct cover plate space.

[0084] The refrigerator further comprises a shock-absorbing pad 5 arranged between the motor housing 44 and the box body 1. The shock-absorbing pad 5 can effectively prevent the vibration generated during the use of the motor 41 from being transmitted to the box body 1, and the shock-absorbing pad 5 can be a rubber member.

[0085] The transmission gear set 45 includes a worm 451 arranged on the motor output shaft and a turbine 452 cooperating with the worm 451, a first transmission gear 453 arranged on the turbine 452, a second transmission gear 454 meshing with the first transmission gear 453, and a transmission member 455 coaxially arranged with the winding wheel 42, and the transmission member 455 is provided with a ring gear 456 combined with the second transmission gear 454.

[0086] In this embodiment, the transmission member 455 is coaxially arranged with the winding wheel 42 , and a positioning structure is provided between the two to limit the relative rotation of the two in the circumferential direction of the winding wheel 42 .

[0087] In this embodiment, the rotation of the motor 41 is restricted by the cooperation of the worm 451 and the worm gear 452, so that the transmission can only be transmitted from the output shaft of the motor to the worm 451, and then from the worm 451 to the worm gear 452, but cannot be transmitted from the worm gear 452 to the worm 451 in the reverse direction, and the locking of the adjusted shelf 2 is achieved by the self-locking of the worm gear 452 and the worm gear 451. Of course, in other embodiments, the motor 41 with a brake can also be used for control.

[0088] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the drawings. Any changes made according to the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and drawings, should be within the protection scope of the present invention.

Claims

1. A refrigerator, characterized in that ,include: Box, A shelf is disposed in the box; A lifting mechanism, comprising a sliding block that can slide up and down and a pulley arranged on the sliding block, and the shelf is fixed on the sliding block; The driving mechanism comprises a motor, a winding wheel and a pull rope, wherein the motor is fixed on the box, the first end of the pull rope is fixed on the winding wheel, and the second end of the pull rope is fixed on the box; the motor drives the winding wheel to rotate to wind or unwind the pull rope; The pulley is suspended on the pull rope, and when the winding wheel winds the pull rope, the pull rope drives the pulley to move upward.

2. The refrigerator according to claim 1, characterized in that: The lifting mechanism comprises a pair of sliders arranged opposite to each other, the two sides of the shelf are respectively fixed on the corresponding sliders, and each slider is provided with the pulley; The driving mechanism is provided with two pull ropes in total, and the two pull ropes are used to hang corresponding pulleys respectively, and the winding wheel controls the winding or unwinding of the two pull ropes at the same time.

3. The refrigerator according to claim 2, characterized in that: The winding wheel comprises a wheel body and a rope groove arranged on the circumferential side wall of the wheel body. When the winding wheel winds the pull rope, the pull rope is accommodated in the rope groove. Two rope grooves are provided, and the two rope grooves are arranged along the axial direction of the wheel body, and the two rope grooves are respectively adapted to the two pull ropes.

4. The refrigerator according to claim 3, characterized in that: The two side surfaces of the winding wheel which are arranged opposite to each other along the axial direction of the wheel body are respectively provided with pull rope positioning holes, and the first end of the pull rope is fixed in the pull rope positioning hole; the pull rope positioning hole is communicated with the rope groove; The two pull rope positioning holes are centrally symmetrically arranged with the center of the wheel body as the center.

5. The refrigerator according to claim 2, characterized in that: The lifting mechanism further comprises a guide member arranged on the box body, and a connecting line between the guide member and the pulley is approximately extended along the vertical direction.

6. The refrigerator according to claim 5, characterized in that: The guide member comprises a fixed pulley; a line connecting the center of the fixed pulley and the center of the winding wheel is approximately extended in the horizontal direction.

7. The refrigerator according to claim 1, characterized in that: The box body comprises an inner liner and a support frame arranged on the inner liner, the support frame is provided with a slide rail slidably matched with the slider, and the slide rail is extended in the vertical direction; The support frame also has an upper limit block and a lower limit block which are arranged on the slide rail and arranged in the vertical direction, and the sliding block slides between the upper limit block and the lower limit block.

8. The refrigerator according to claim 7, characterized in that: The slide rail comprises a slide groove, and slide rail protrusions arranged opposite to each other are arranged on opposite side walls of the slide groove, the slide rail protrusions protrude from the side walls of the slide groove toward the inside of the slide groove, and the slide rail protrusions extend along the extension direction of the slide groove; The slider is provided with a roller, and a roller groove matching with the protrusion of the slide rail is formed on the circumferential side wall of the roller; The upper limit block and the lower limit block are positioned in the slide groove, and both the upper limit block and the lower limit block are formed with limit block positioning grooves that are matched with the slide rail protrusions.

9. The refrigerator according to claim 1, characterized in that: The lifting mechanism also has a counterweight block arranged at the bottom of the sliding block; Or the lifting mechanism further comprises an elastic member, wherein the elastic member comprises a fixed end fixed to the box body and a movable end fixed to the slider, and the elastic force accumulated by the elastic member drives the movable end to move toward the fixed end.

10. The refrigerator according to claim 1, characterized in that: The driving mechanism also has a motor housing and a transmission gear set arranged in the motor housing, the motor is arranged in the motor housing, and the motor drives the winding wheel through the transmission gear set; the motor housing is fixed on the box body; An escape groove arranged away from the shelf is formed on the box body at a position opposite to the motor housing, and the motor housing is positioned in the escape groove.

11. The refrigerator according to claim 10, characterized in that: The refrigerator also has a shock-absorbing pad arranged between the motor housing and the box body.

12. The refrigerator according to claim 10, characterized in that: The transmission gear set includes a worm arranged on the output shaft of the motor and a turbine matched with the worm, a first transmission gear arranged on the turbine, a second transmission gear meshing with the first transmission gear, and a transmission member arranged coaxially with the winding wheel, and the transmission member is provided with a ring gear combined with the second transmission gear.

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