Refrigeration equipment

Abstract

The refrigeration equipment comprises a box body, a storage rack and a limiting mechanism, and the storage rack is arranged in the box body and can slide in the vertical direction; the limiting mechanism comprises a rack, a gear, a ratchet wheel, a ratchet wheel synchronizing wheel and a ratchet wheel retainer; the rack is fixed on the box body; the gear and the gear synchronizing wheel are rotationally mounted on the shelf; the ratchet wheel synchronizing wheel and the ratchet wheel retainer are coaxially arranged, the ratchet wheel synchronizing wheel is meshed with the gear, and the gear is meshed with the rack; the ratchet wheel retainer moves between a locking position and a releasing position, and when the ratchet wheel retainer is located at the locking position, the ratchet wheel retainer abuts against the ratchet wheel to limit the ratchet wheel to rotate when the shelf moves downwards; and when the ratchet wheel is at the release position, the ratchet wheel can freely rotate in two directions.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration technology, and particularly to a refrigeration device. Background Art

[0002] With the increasing improvement of the quality of life, the share of multi-door refrigerators with characteristics such as large volume, multiple functions, and classified storage is gradually increasing, 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 shelves with fixed positions. Usually, rib strips are formed on the opposite sides of the inner liner of the refrigerator, and the shelf can be placed on the rib strips. In order to facilitate adjustment by users, several rib strips are usually reserved during the design of the refrigerator to adjust the position of the shelf.

[0004] However, the height between the shelves cannot be flexibly adjusted, and there are certain limitations in the storage space. Summary of the Invention

[0005] The purpose of the present invention is to provide a refrigeration device to solve the deficiencies in the prior art. It realizes the movement adjustment of the shelf more stably through the cooperation of the gear rotatably installed on the shelf and the rack fixed on the box body; at the same time, the locking of the shelf position is realized through the cooperation of the ratchet and the ratchet stopper, which is convenient for operation and control.

[0006] The refrigeration device provided by the present invention includes: a box body,

[0007] a shelf, which is arranged in the box body and can slide in the vertical direction;

[0008] a limiting mechanism, including a rack, a gear, a ratchet, a ratchet synchronous wheel, and a ratchet stopper. The rack is fixed on the box body; the gear and the gear synchronous wheel are both rotatably installed on the shelf; the ratchet synchronous wheel and the ratchet stopper are coaxially arranged, the ratchet synchronous wheel meshes with the gear, and the gear meshes with the rack;

[0009] The ratchet stopper moves between a locking position and a release position. In the locking position, the ratchet stopper abuts against the ratchet to limit the rotation of the ratchet when the shelf moves downward; in the release position, the ratchet can rotate freely in both directions.

[0010] Further, the outer diameter of the gear is larger than the outer diameter of the ratchet synchronous wheel.

[0011] Further, the outer diameter of the ratchet synchronous wheel is smaller than the outer diameter of the ratchet.

[0012] Further, when the shelf moves upward under an external force, the ratchet rotates and drives the ratchet stopper to move away from the ratchet, and the ratchet stopper moves from the locking position to the releasing position;

[0013] After the external force is withdrawn, the ratchet stopper moves back to the locking position.

[0014] Further, the ratchet has a plurality of ratchet teeth and ratchet grooves formed between adjacent ratchet teeth;

[0015] The ratchet stopper includes a movable rod and a reset member. The movable rod is slidably disposed on the shelf. One end of the movable rod can move into the ratchet groove and abut against the ratchet teeth; the reset member stores a resilience force that drives the movable rod to move toward the ratchet groove.

[0016] Further, the end of the movable rod away from the ratchet extends near the front end of the shelf;

[0017] The limiting mechanism further has an adjusting wrench, which cooperates with the end of the movable rod away from the ratchet, and the adjusting wrench drives the movable rod to move.

[0018] Further, a plurality of movable rod support columns are provided on the shelf. A through hole slidably engaged with the movable rod is provided on the movable rod support column. The reset member is a compression spring sleeved outside the movable rod; the adjusting wrench is fixed on the movable rod.

[0019] Further, the refrigeration device further includes a slider and a slide rail slidably engaged with the slider. The slide rail is fixed on the box body; the shelf is detachably installed and fixed on the slider;

[0020] The shelf includes a pair of frame bodies and a partition provided on the pair of frame bodies. The frame bodies are positioned on the slider;

[0021] A plurality of positioning columns arranged in the vertical direction are provided on the slider. Hanging grooves adapted to the positioning columns are provided on the frame bodies, and the frame bodies are hung on the positioning columns.

[0022] Further, the shelf includes a flipping limiting unit provided on the frame body. The flipping limiting unit includes a limiting member movable on the frame body. The limiting member can move to the opening of the hanging groove to abut against the positioning column located in the hanging groove to prevent the positioning column from slipping out of the hanging groove.

[0023] Further, the refrigeration device further includes a damper and a damping gear cooperating with the damper. The damping gear meshes with the gear or the damping gear meshes with the ratchet synchronizing wheel;

[0024] The refrigeration device further includes a sliding assistance unit, which provides assistance for the upward movement adjustment of the shelf. The sliding assistance unit includes an elastic telescopic member. When the shelf moves downward, the elastic telescopic member deforms and stores the resilience. The elastic telescopic member includes a coil spring.

[0025] Compared with the prior art, in the present invention, the movement amplitude of the shelf during the up and down adjustment is controlled by the cooperation of the gear rotatably installed on the shelf and the rack fixed on the box body, and the movement adjustment of the shelf is realized more flexibly and stably. At the same time, the rotation of the ratchet synchronous wheel is restricted by the cooperation of the ratchet and the ratchet stopper. The ratchet synchronous wheel meshes with the gear, so the rotation of the gear is indirectly restricted, and thus the locking of the shelf position is realized, which is convenient for operation. Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of the refrigeration device disclosed in the embodiment of the present invention;

[0027] Figure 2 is a front view of the refrigeration device disclosed in the embodiment of the present invention;

[0028] Figure 3 is Figure 2 a sectional view taken along the AA direction in

[0029] Figure 4 is Figure 2 a sectional view taken along the BB direction in

[0030] Figure 5 is a schematic installation structure diagram of the shelf after the box body of the refrigeration device disclosed in the embodiment of the present invention is disassembled;

[0031] Figure 6 is Figure 5 a partial enlarged view at C in

[0032] Figure 7 is a schematic installation structure diagram of the shelf and the limiting mechanism in the refrigeration device disclosed in the embodiment of the present invention;

[0033] Figure 8 is an internal exploded view of the shelf and the limiting mechanism in the refrigeration device disclosed in the embodiment of the present invention;

[0034] Figure 9 is a schematic installation structure diagram of the synchronous rod in the refrigeration device disclosed in the embodiment of the present invention;

[0035] Figure 10 is a schematic structural diagram of the refrigeration device after the outer cover and the inner cover are installed and fixed in the embodiment of the present invention;

[0036] Figure 11It is a schematic diagram of the installation structure of the shelf in the refrigeration device disclosed in another embodiment of the present invention;

[0037] Figure 12 is Figure 11 The internal structure schematic diagram of the shelf in after the outer cover and the inner cover are disassembled;

[0038] Explanation of reference numerals: 1 - box body, 10 - refrigeration compartment,

[0039] 2 - shelf, 21 - shelf body, 211 - hanging groove, 22 - partition board, 23 - movable rod support column, 24 - flipping limit unit, 241 - limit member, 242 - sliding support member, 2420 - limit sliding hole, 243 - limit cap, 25 - baffle plate, 26 - outer cover, 27 - inner cover,

[0040] 3 - limit mechanism, 31 - rack, 32 - gear, 33 - ratchet, 331 - ratchet teeth, 332 - gear groove, 34 - ratchet synchronous pulley, 35 - ratchet stopper, 351 - movable rod, 352 - reset member, 36 - adjusting wrench,

[0041] 4 - sliding mechanism, 41 - slider, 411 - positioning column, 42 - slide rail,

[0042] 5 - damping unit, 51 - damper, 52 - damping gear,

[0043] 6 - sliding assistance unit, 61 - elastic telescopic member,

[0044] 7 - synchronization unit, 71 - synchronization rod,

[0045] 8 - air duct cover plate, 81 - decorative plate. Detailed implementation manners

[0046] The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0047] Embodiment of the present invention: A refrigeration device is disclosed, including a box body 1 and a door body provided on the box body 1. The box body 1 has a refrigeration compartment 10, and the door body is used to close the refrigeration compartment 10. A shelf 2 is provided in the refrigeration compartment 10, and items are placed on the shelf 2. In the prior art, in order to more flexibly store objects, the shelf 2 is generally set to be adjustable so that users can adjust the position of the shelf 2 according to their own usage needs to adjust the space in the refrigeration compartment 10.

[0048] The existing adjustment method mainly involves setting multiple sets of support positions on the inner wall of the refrigerating compartment 10, and adjusting by placing the shelf 2 on the support positions at different heights. This adjustment method requires the entire shelf 2 to be first withdrawn from the refrigerating compartment 10, and its adjustment method is relatively inconvenient.

[0049] The refrigerator of this embodiment is as Figures 1-6 shown, the shelf 2 is arranged in the box body 1 and can slide in the vertical direction; when the shelf 2 slides in the vertical direction, the position adjustment in the refrigerating compartment 10 is completed. The shelf 2 is slidably arranged at the rear side of the refrigerating compartment 10, and the rear side of the refrigerating compartment 10 is opposite to the opening direction of the refrigerating compartment 10 in position.

[0050] It can be understood that after the shelf 2 is adjusted in place, it is necessary to position the adjusted position of the shelf 2. Therefore, the refrigeration equipment disclosed in this application further includes a limiting mechanism 3, and the limiting mechanism 3 is used to lock and fix the shelf 2 adjusted in place.

[0051] In a specific embodiment, as Figures 6-8 shown, the limiting mechanism 3 includes a rack 31, a gear 32, a ratchet 33, a ratchet synchronous wheel 34 and a ratchet stopper 35. The rack 31 is fixed on the box body 1; the gear 32 and the gear synchronous wheel 34 are both rotatably installed on the shelf 2; the ratchet synchronous wheel 34 and the ratchet stopper 35 are coaxially arranged, the ratchet synchronous wheel 34 is meshed with the gear 32, and the gear 32 is meshed with the rack 31;

[0052] The ratchet stopper 35 moves between a locking position and a releasing position. In the locking position, the ratchet stopper 35 abuts against the ratchet 33 to limit the rotation of the ratchet 33 when the shelf 2 moves downward; in the releasing position, the ratchet 33 can rotate freely in both directions.

[0053] In the locking position, the ratchet 33 can only rotate in one direction, and when rotating in this direction, the shelf 2 moves upward for adjustment. In the releasing position, the ratchet 33 can rotate freely in both directions, that is, the ratchet 33 can rotate in the clockwise direction or the counterclockwise direction, and the rotation direction of the ratchet 33 is no longer restricted. At this time, the shelf 2 can be lifted and adjusted in the vertical direction or adjusted downward in the vertical direction.

[0054] In this embodiment, the gear 32 rotatably installed on the shelf 2 is matched with the rack 31 fixed on the box body 1 to realize the control of the moving amplitude of the shelf 2 during the up and down adjustment process. The gear 32 is meshed with the rack 31, and when the gear 32 rotates along the rack 31, it drives the shelf 2 to move along the extending direction of the rack 31. Through the cooperation of the gear 32 and the rack 31, the moving adjustment of the shelf 2 can be realized more stably.

[0055] In this embodiment, the cooperation between the ratchet wheel 33 and the ratchet wheel stopper 35 is used to limit the rotation of the ratchet synchronous wheel 34. The ratchet synchronous wheel 34 meshes with the gear 32, so the rotation of the gear 32 is indirectly limited. Limiting the rotation of the gear 32 avoids the up-and-down movement of the gear 32 along the rack 31, and further avoids the adjustment of the shelf 2.

[0056] In this embodiment, due to the setting of the ratchet wheel 33, the gear 32 can only rotate in one direction and cannot rotate bidirectionally. When the shelf 2 is lifted upward, the ratchet wheel 33 can rotate by getting rid of the restriction of the ratchet wheel stopper 35. When the shelf 2 moves downward, the rotation of the ratchet wheel 33 is restricted due to the presence of the ratchet wheel stopper 35, thus avoiding the downward movement of the shelf 2 after the adjustment is in place.

[0057] When it is necessary to move the shelf 2 downward, the ratchet wheel stopper 35 is controlled to be disengaged from the restriction of the ratchet wheel 33, so as to realize the free bidirectional rotation of the ratchet wheel 33. At this time, the shelf 2 can be moved upward or downward for adjustment.

[0058] To facilitate the implementation of the above embodiment, the ratchet wheel 33 has a plurality of ratchet teeth 331 and gear grooves 332 formed between adjacent two ratchet teeth 331. When in the locking position, the ratchet wheel stopper 35 extends into the gear groove 332 and forms a limitation on the ratchet wheel 33.

[0059] The gear groove 332 has opposite first inner wall and second inner wall. The ratchet wheel stopper 35 forms a limitation on the rotation of the ratchet wheel 33 after abutting against the second inner wall. When the ratchet wheel stopper 35 is located in the gear groove 332, the plane where the second inner wall is located is consistent with the extending direction of the ratchet wheel stopper 35. The first inner wall is an inclined surface, and the ratchet wheel stopper 35 can relatively cross over the ratchet tooth 331 along the first inner wall, so as to realize the relative rotation between the ratchet wheel 33 and the ratchet wheel stopper 35. The setting of the above structure realizes the restriction of the ratchet wheel 33 by the ratchet wheel stopper 35 when rotating in a single direction, so that there is no restriction during the process of adjusting the upward movement of the shelf 2, and only the downward movement of the shelf 2 under its own gravity is restricted.

[0060] In the actual use process, the control of the up-and-down movement of the shelf 2 can be directly realized by the meshing of the ratchet synchronous wheel 34 and the rack 31. However, this method has relatively poor adjustment flexibility and relatively low adjustable levels. In this embodiment, a gear 32 is also provided between the ratchet synchronous wheel 34 and the rack 31. The setting of the gear 32 can increase the adjustment levels of the ratchet wheel 33, so that the adjustment of the position of the shelf 2 in the box body 1 is more flexible.

[0061] In this embodiment, as Figure 4As shown, the outer diameter of the gear 32 is greater than the outer diameter of the ratchet synchronizing wheel 34. The larger outer diameter of the gear 32 can better improve the adjustment levels of the ratchet 33, thereby enabling the shelf 2 to have more adjustable high positions, that is, the adjustment of the height of the shelf 2 is more precise.

[0062] Furthermore, in order to better achieve the locking effect, the outer diameter of the ratchet synchronizing wheel 34 is smaller than the outer diameter of the ratchet 33.

[0063] Under the action of an external force, when the shelf 2 moves upward, the ratchet 33 rotates and drives the ratchet stop 35 to move away from the ratchet 33. The ratchet stop 35 moves from the locking position to the release position. It should be noted that the ratchet stop 35 can move completely to the release position or only move partially in the direction of the release position to form an avoidance of the ratchet 33. After the external force is removed, the ratchet stop 35 moves back to the locking position.

[0064] It should be noted that the external force is the force that lifts the shelf 2 upward. The setting of the above structure enables the shelf 2 to be unrestricted during the upward lifting process. When the shelf 2 is lifted upward, the ratchet stop 35 can move away from the ratchet 33, that is, move from the locking position to the release position, thereby forming an avoidance for the rotation of the ratchet 33.

[0065] When the force that lifts the shelf 2 upward is removed, that is, it indicates that the upward adjustment is in place at this time, the ratchet stop 35 can move back to the locking position to cooperate with the ratchet 33 to prevent the ratchet 33 from rotating to make the shelf 2 move downward, that is, to lock the position of the shelf 2.

[0066] When the shelf 2 needs to be adjusted downward, by moving the ratchet stop 35, the ratchet stop 35 is moved from the locking position to the release position. At this time, the ratchet 33 can be released from the restriction of the ratchet stop 35 and can rotate in both forward and reverse directions.

[0067] As Figures 5-7 shown, the ratchet stop 35 includes a movable rod 351 and a reset member 352. The movable rod 351 is slidably disposed on the shelf 2. One end of the movable rod 351 can move into the ratchet groove 352 and abut against the ratchet tooth 331. The reset member 352 stores a resilience force that drives the movable rod 351 to move toward the ratchet groove 332.

[0068] When the movable rod 351 moves away from the ratchet wheel 33 under an external force, that is, when the movable rod 351 moves from the locking position to the release position, the reset member 352 deforms and stores elastic force, so that after the acting force driving the movable rod 351 moves is withdrawn, the movable rod 351 can move from the release position to the locking position. When in the locking position, one end of the movable rod 351 extends into the ratchet groove 352, and when in the release position, one end of the movable rod 351 leaves the ratchet groove 352.

[0069] In order to conveniently control the movement of the movable rod 351, the end of the movable rod 351 away from the ratchet wheel 33 extends and is arranged near the front end of the shelf 2; the front end of the shelf 2 is relatively located at the opening position near the refrigerating compartment 10. Such a structural arrangement enables the control of the movable rod 351 to be realized at the opening position of the refrigerating compartment 10.

[0070] Furthermore, in order to better control the movable rod 351, the limiting mechanism 3 further has an adjusting wrench 36, which cooperates with the end of the movable rod 351 away from the ratchet wheel 33, and the adjusting wrench 36 drives the movable rod 351 to move.

[0071] In this embodiment, setting the adjusting wrench 36 at a position near the front end of the shelf 2 can more conveniently control the movable rod 351 and facilitate the adjustment and movement of the shelf 2.

[0072] As Figures 5-8 shown, in this embodiment, the shelf 2 includes a pair of frame bodies 21 and a partition 22 supported on the pair of frame bodies 21. The pair of frame bodies 21 are arranged in the refrigerating compartment 10 along the width direction of the refrigerating compartment 10, and the partition 22 is used to carry items.

[0073] As Figures 7-8 shown, in order to more stably realize the movement of the movable rod 351, a plurality of movable rod support columns 23 are arranged on the shelf 2. Through holes slidably matched with the movable rod 351 are arranged on the movable rod support columns 23. The reset member 352 is a compression spring sleeved outside the movable rod 351. One end of the compression spring is fixed on the movable rod 351, and the other end of the compression spring abuts against the movable rod support column 23.

[0074] The adjusting wrench 36 is fixed on the movable rod 351. The movement control of the movable rod 351 is realized by moving the adjusting wrench 36 along the axial direction of the movable rod 351.

[0075] In other embodiments, the adjusting wrench 36 can also be pivotally connected to the shelf 2 (not shown in the figure). Specifically, the middle position of the adjusting wrench 36 is pivotally connected to the frame body 21 of the shelf 2, and one end of the adjusting wrench 36 is pivotally connected to the movable rod 351. The movement control of the movable rod 351 is realized by rotating the adjusting wrench 36.

[0076] As Figures 6-8 shown, in order to more stably adjust the up and down movement of the shelf 2, the refrigeration device further includes a sliding mechanism 4. The sliding mechanism 4 includes a slider 41 and a slide rail 42 that slidably cooperates with the slider 41. The slide rail 42 is fixed on the box body 1; the shelf 2 is detachably installed and fixed on the slider 41; specifically, the frame body is positioned on the slider 41;

[0077] Specifically, a plurality of positioning posts 411 arranged in the vertical direction are provided on the slider 41, and hanging grooves 211 adapted to the positioning posts 411 are provided on the frame body 21. The frame body 21 is hung on the positioning posts 411. The cooperation of the hanging grooves 211 and the positioning posts 411 can facilitate the installation and disassembly of the shelf 2.

[0078] Although the cooperation of the hanging grooves 211 and the positioning posts 411 can facilitate the installation and disassembly of the shelf 2, during the process of lifting the shelf 2 upward, it is easy for the positioning posts 411 to slip out of the hanging grooves 211, resulting in the shelf 2 detaching from the slider 41.

[0079] To avoid the above problems, the shelf 2 includes a flipping limit unit 24 provided on the frame body 21. The flipping limit unit 24 includes a limiting member 241 that moves on the frame body 21. The limiting member 241 can move to the opening of the hanging groove 211 to abut against the positioning post 411 located in the hanging groove 211 to limit the positioning post 411 from slipping out of the hanging groove 211.

[0080] In a specific embodiment, the hanging groove 211 is opened in a direction away from the partition 22, and the limiting member 241 is slidably arranged along a direction perpendicular to the opening direction of the hanging groove 211. When the limiting member 241 slides to the opening position of the hanging groove 211, the closing of the hanging groove 211 is completed, and the limiting member 241 abuts against the positioning post 411, thereby preventing the positioning post 411 from detaching from the hanging groove 211. The setting of the limiting member 241 realizes more stable installation and fixation of the shelf 2.

[0081] Specifically, as Figures 7-8 shown, the flipping limit unit 24 further includes a sliding support member 242 provided on the frame body 21, and a limiting slide hole 2420 adapted to the limiting member 241 is provided on the sliding support member 242.

[0082] The setting of the limiting sliding hole 2420 can provide directionality for the sliding of the limiting member 241 , thereby achieving a smoother movement of the limiting member 241 on the frame 21 .

[0083] A limiting cap 243 is disposed at one end of the limiting member 241 away from the hanging slot 211 . The limiting cap 243 is used to abut against the frame 21 to limit the movement of the limiting member 241 toward the hanging slot 211 .

[0084] The limiting cap 243 is used to limit the limiting member 241 from excessively moving toward the hanging groove 211 , thereby better controlling the movement of the limiting member 241 .

[0085] The frame 21 is provided with a relief groove matched with the limit cap 243 on one side away from the slider 41, and the limit cap 243 is positioned in the relief groove. The relief groove can prevent the limit cap 243 from protruding out of the outer surface of the frame 21 after abutting against the frame 21.

[0086] In the above embodiment, the stopper 241 is movable on the frame 21 in a sliding manner, and slides between the opening position of the hanging groove 211 and the opening position of the hanging groove 211. In another embodiment, Figures 11-12 As shown, the limiting member 241 can also be moved to the opening position of the hanging groove 211 or moved out of the opening position of the hanging groove 211 by rotating. Figure 11 and 12 In the illustrated solution, the limiting member 241 is used to abut against the positioning column limiting structure on the positioning column 411, thereby completing the relative rotation of the limiting member 241 and the positioning column 411. Since the limiting member 241 is arranged on the rack body 21, the rotation of the limiting member 241 relative to the positioning column 411 is achieved, thereby achieving the limit of the flipping of the shelf 2. The positioning column limiting structure is a groove body arranged on the positioning column 411, and the limiting member 241 completes the positioning after rotating into the groove body.

[0087] Specifically, the limiting member 241 is pivotally connected to the frame 21 , and under the action of external force, the limiting member 241 rotates in a direction away from the hanging slot 211 to expose the hanging slot 211 outwardly. After the external force is removed, the limiting member 241 returns to the opening of the hanging slot 211 .

[0088] It can be understood that, during the process of the position limiting member 241 returning to its original position, the position limiting member returning to its original position can be performed through a position limiting member returning structure. Specifically, the position limiting member returning structure can be a spring.

[0089] The refrigeration device further includes a damping unit 5. The damping unit 5 includes a damper 51 and a damping gear 52 that cooperates with the damper 51. The damping gear 52 meshes with the gear 32 or the damping gear 52 meshes with the ratchet synchronous wheel 34.

[0090] The setting of the damping unit 5 enables it to move downward slowly during the process of the shelf 2 moving downward for adjustment, avoiding the uncontrollable movement of the shelf 2 caused by its too-fast downward movement under the action of gravity.

[0091] As Figures 7-8 shown, the refrigeration device further includes a sliding assistance unit 6. The sliding assistance unit 6 provides assistance for the upward movement adjustment of the shelf 2. The sliding assistance unit 6 includes an elastic telescopic member 61. When the shelf 2 moves downward, the elastic telescopic member 61 deforms and stores resilience. The elastic telescopic member 61 includes a coil spring.

[0092] Since the shelf 2 needs to carry objects and its own weight is relatively large, the setting of the sliding assistance unit 6 can provide assistance for the upward lifting of the shelf 2, facilitating the realization of the upward movement adjustment of the shelf 2.

[0093] In a specific embodiment, a pair of the racks 31 are provided on the cabinet 1, and a pair of the gears 32 are provided. The pair of gears 32 respectively mesh with the pair of racks 31. Each gear 32 cooperates with a corresponding rack 31, and the pair of gears 32 are respectively pivotally connected to a pair of the frame bodies 21. One gear 32 and one rack 31 form a set of gear adjustment units for controlling the amplitude of the up-and-down movement of one frame body 21, and the two frame bodies 21 are controlled by two sets of gear adjustment units.

[0094] As Figures 7-9 shown, in order to control the synchronous up-and-down movement of the two frame bodies 21, the two gears 32 need to rotate synchronously. Therefore, in this embodiment, the shelf further has a synchronization unit 7. The synchronization unit 7 includes a synchronization rod 71. The synchronization rod 71 is connected between the two gears 32 or the synchronization rod 71 is connected between the two ratchet synchronous wheels 34. The setting of the synchronization rod 71 can make the two ratchet synchronous wheels 34 rotate synchronously or make the two gears 32 rotate synchronously.

[0095] In this embodiment, the synchronization rod 71 is connected to the two ratchet synchronous wheels 34. And since the outer diameter size of the ratchet synchronous wheel 34 is smaller than that of the gear 32, the synchronization of the two frame bodies 21 can be higher. Since the outer diameter size of the ratchet synchronous wheel 34 is smaller, the amplitude of the up-and-down movement of the shelf 2 brought by its rotation is smaller, so that there will be no large deviation between the two frame bodies 21 during the up-and-down movement, thereby improving the synchronization of the movement of the two frame bodies 21.

[0096] The shelf 2 further has an outer cover 26 and an inner cover 27 disposed on opposite sides of the shelf body 21. The outer cover 26 covers the ratchet wheel 33, and the outer cover 26 also covers the ratchet stop 35. The inner cover 27 simultaneously covers the gear 32 and the ratchet synchronous pulley 34.

[0097] The arrangement of the inner cover 27 and the outer cover 26 can prevent the gear 32, the ratchet wheel 33, etc. from being exposed outward, thus avoiding the problem of pinching hands during user operation.

[0098] In this embodiment, the refrigeration device further includes an air duct cover plate 8. The air duct cover plate 8 is disposed on the rear wall of the refrigeration compartment 10. The rack 31 is also disposed on the rear wall of the refrigeration compartment 10. The rear wall of the refrigeration compartment 10 is opposite to the opening position of the refrigeration compartment 10. An avoidance space is provided on the air duct cover plate 8, and the shelf body 21 can slide up and down within the avoidance space, and part of the rack 31 is exposed outward from the avoidance space.

[0099] To cover the exposed part of the rack 31, the shelf 2 further has a baffle plate 25. The baffle plate 25 is fixed on the shelf body 21 and moves up and down with the shelf body 21. The baffle plates 25 are provided on both the upper and lower sides of the shelf body 21. The dimension of the baffle plate 25 extending in the vertical direction is not less than half of the length of the avoidance space extending in the vertical direction.

[0100] During the up and down movement of the baffle plate 25, it covers the rack 31, thus preventing the rack 31 from being exposed outward and affecting the appearance, and also avoiding the problem of pinching the user's hand when the rack 31 is exposed outward.

[0101] In one embodiment, as Figure 10 shown, the baffle plate 25 is disposed at the rear side of the air duct cover plate 8, and the baffle plate 25 is closer to the rear wall of the refrigeration compartment 10 than the air duct cover plate 8.

[0102] In the second embodiment, as Figures 11-12 shown, the baffle plate 25 is disposed at the front side of the air duct cover plate 8, and the baffle plate 25 is farther from the rear wall of the refrigeration compartment 10 than the air duct cover plate 8. In this embodiment, a decorative plate 81 is provided on the air duct cover plate 8. The decorative plate 81 is disposed at the front side of the baffle plate 25. The decorative plate 81 covers the baffle plate 25, thus preventing the baffle plate 25 from being overly exposed during movement. In addition, the arrangement of the decorative plate 81 can also provide a stable support for the movement of the baffle plate 25. The decorative plate 81 covers the air duct cover plate 8 and forms a space for the baffle plate 25 to move between the decorative plate 81 and the air duct cover plate 8.

[0103] During actual use, if there is no presence of the decorative plate 81, the end of the baffle plate 25 that is far from the frame body 21 is prone to warping due to direct exposure to the outside, and it is also prone to the problem of pinching the user's hand.

[0104] The structure, features, and effects of the present invention have been described in detail based on the embodiments shown in the drawings. The above are only the preferred embodiments of the present invention, but the present invention is not limited to the scope of implementation shown in the drawings. Any changes made in accordance with the concept of the present invention, or equivalent embodiments modified into equivalent changes, still within the spirit covered by the specification and the drawings, shall be within the protection scope of the present invention.

Claims

1. A refrigeration device, characterized in that , comprising: a box body, a shelf, which is arranged in the box body and can slide along the vertical direction; a limiting mechanism, including a rack, a gear, a ratchet wheel, a ratchet synchronizing wheel and a ratchet stopper, the rack is fixed on the box body; the gear and the gear synchronizing wheel are both rotatably installed on the shelf; the ratchet synchronizing wheel and the ratchet stopper are coaxially arranged, the ratchet synchronizing wheel is meshed with the gear, and the gear is meshed with the rack; the ratchet stopper moves between a locking position and a releasing position. In the locking position, the ratchet stopper abuts against the ratchet wheel to limit the rotation of the ratchet wheel when the shelf moves downward; in the releasing position, the ratchet wheel can freely rotate in both directions.

2. The refrigeration device according to claim 1, characterized in that: the outer diameter of the gear is larger than the outer diameter of the ratchet synchronizing wheel.

3. The refrigeration device according to claim 1, characterized in that: the outer diameter of the ratchet synchronizing wheel is smaller than the outer diameter of the ratchet wheel.

4. The refrigeration device according to claim 1, characterized in that: under the action of an external force, when the shelf moves upward, the ratchet wheel rotates and drives the ratchet stopper to move away from the ratchet wheel, and the ratchet stopper moves from the locking position to the releasing position; after the external force is withdrawn, the ratchet stopper resets and moves to the locking position.

5. The refrigeration device according to claim 1, characterized in that: the ratchet wheel has a plurality of ratchet teeth and ratchet grooves formed between adjacent ratchet teeth; the ratchet stopper includes a movable rod and a reset member, the movable rod is slidably arranged on the shelf, one end of the movable rod can move into the ratchet groove and abut against the ratchet tooth; the reset member stores a resilience force that drives the movable rod to move towards the ratchet groove.

6. The refrigeration device according to claim 5, characterized in that: one end of the movable rod away from the ratchet wheel extends near the front end of the shelf; the limiting mechanism further has an adjusting wrench, the adjusting wrench cooperates with one end of the movable rod away from the ratchet wheel, and the adjusting wrench drives the movable rod to move.

7. The refrigeration device according to claim 6, characterized in that: a plurality of movable rod support columns are arranged on the shelf, through holes slidably matched with the movable rod are arranged on the movable rod support columns; the reset member is a compression spring sleeved outside the movable rod; the adjusting wrench is fixed on the movable rod.

8. The refrigeration device according to claim 1, characterized in that: the refrigeration device further includes a slider and a slide rail slidably matched with the slider, the slide rail is fixed on the box body; the shelf is detachably installed and fixed on the slider; the shelf includes a pair of frame bodies and a partition plate arranged on the pair of frame bodies, and the frame bodies are positioned on the slider; a plurality of positioning columns arranged in the vertical direction are arranged on the slider, and hanging grooves adapted to the positioning columns are arranged on the frame bodies, and the frame bodies are hung on the positioning columns.

9. The refrigeration device according to claim 8, characterized in that: The shelf includes a flipping limit unit provided on the frame body. The flipping limit unit includes a limiting member movable on the frame body. The limiting member can move to the opening of the hanging groove to abut against the positioning post located in the hanging groove to prevent the positioning post from slipping out of the hanging groove.

10. The refrigeration device according to claim 1, characterized in that: the refrigeration device further includes a damper and a damping gear cooperating with the damper. The damping gear meshes with the gear or the damping gear meshes with the ratchet synchronous wheel; the refrigeration device further includes a sliding assistance unit. The sliding assistance unit provides assistance for the upward movement adjustment of the shelf. The sliding assistance unit includes an elastic telescopic member. When the shelf moves downward, the elastic telescopic member deforms and stores resilience. The elastic telescopic member includes a coil spring.

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