Refrigeration apparatus

Abstract

Disclosed in the present application is a refrigeration apparatus, comprising an enclosure, a shelf and a limiting mechanism, wherein the limiting mechanism comprises a rack, a ratchet and a ratchet stop, the rack being fixed to the enclosure, the ratchet being rotationally mounted on the shelf, and the ratchet engaging with the rack. In a locked position, the ratchet stop restrains the ratchet to prevent the shelf from moving downwards; and in a released position, the ratchet can freely rotate.

Description

Refrigeration equipment

[0001] This application is based on Chinese patent applications with application numbers 202311559915.1, 202323149886.X, 202323147489.9, 202323149872.8 and application date of November 21, 2023, and claims the priority of these Chinese patent applications. The entire contents of the above patent applications are hereby introduced into this application as a reference. Technical Field

[0002] The present application relates to the field of refrigeration technology, and in particular to a refrigeration device. Background Art

[0003] With the continuous improvement of living standards, the market share of multi-door refrigerators with features such as large capacity, multiple functions and classified storage is increasing, and people's requirements for the intelligence of refrigerator products are also getting higher and higher.

[0004] Most existing refrigerator shelves are fixed in position, usually with ribs formed on opposite sides of the refrigerator's liner, and the shelves are placed on the ribs. To facilitate user adjustment, refrigerator designs often reserve several ribs to adjust the shelf position.

[0005] However, the height between the shelves cannot be flexibly adjusted, and the storage space is limited.

[0006] The reference to any prior art in the specification is not an acknowledgement or suggestion that the prior art forms part of the common general knowledge in any jurisdiction, or that it could reasonably be expected that the person skilled in the art would understand, consider relevant and / or combine with other prior art.

[0007] Application Contents

[0008] The purpose of this application is to provide a refrigeration device to solve the shortcomings of the existing technology. It realizes the movement and adjustment of the shelf more stably through the cooperation of the ratchet installed rotatably on the shelf and the rack fixed on the box body; at the same time, the shelf position is locked through the cooperation of the ratchet and the ratchet stop, which facilitates operation.

[0009] The refrigeration equipment provided in this application includes:

[0010] Box,

[0011] A shelf is arranged in the box and can slide in the vertical direction;

[0012] The limiting mechanism includes a rack, a ratchet, and a ratchet stopper, wherein the rack is fixed to the box body; the ratchet is rotatably mounted on the shelf; and the ratchet is engaged with the rack;

[0013] The ratchet stopper is movable between a locking position and a releasing position. In the locking position, the ratchet stopper abuts against the ratchet to limit the ratchet from rotating when the shelf moves downward; in the releasing position, the ratchet can rotate freely in both directions.

[0014] As an embodiment of the present application, the limiting mechanism further includes a ratchet synchronization wheel, which is rotatably mounted on the shelf, the ratchet synchronization wheel is coaxially arranged with the ratchet wheel, and the ratchet synchronization wheel is engaged with the rack.

[0015] As an embodiment of the present application, the outer diameter of the ratchet synchronizing wheel is smaller than the outer diameter of the ratchet wheel.

[0016] As an embodiment of the present application, the limiting mechanism further includes a gear rotatably mounted on the shelf, the gear is engaged with the rack, and the ratchet synchronous wheel is engaged with the gear.

[0017] As an embodiment of the present application, the outer diameter of the gear is greater than the outer diameter of the ratchet synchronous wheel.

[0018] As an embodiment of the present application, the shelf includes a pair of frames and partitions provided on the frames, and the refrigeration device includes a pair of limiting mechanisms respectively matched with the pair of frames;

[0019] The ratchet wheel and the ratchet synchronous wheel are respectively arranged on two opposite sides of the frame.

[0020] As an embodiment of the present application, when the shelf moves upward under the action of an external force, the ratchet rotates and drives the ratchet stopper to move in a direction away from the ratchet, and the ratchet stopper moves from a locked position to a released position;

[0021] After the external force is removed, the ratchet stopper returns to the locked position.

[0022] As an embodiment of the present application, the ratchet stopper includes a movable rod, which is slidably arranged on the shelf, and one end of the movable rod toward the ratchet can be moved to cooperate with the ratchet to limit the rotation of the ratchet when the shelf moves downward.

[0023] As an embodiment of the present application, the ratchet has a plurality of ratchet teeth and a gear groove formed between adjacent ratchet teeth; one end of the movable rod facing the ratchet can move into the gear groove and abut against the ratchet teeth.

[0024] As an embodiment of the present application, the ratchet stopper further includes a reset member, and the reset member accumulates a rebound force that drives the movable rod to move toward the gear groove.

[0025] As an embodiment of the present application, the shelf is provided with a plurality of movable rod support columns, the movable rod support columns are provided with through holes that slide with the movable rods, and the reset member is a compression spring sleeved outside the movable rods.

[0026] As an embodiment of the present application, the movable rod extends from one end of the ratchet wheel and is arranged near the front end of the shelf;

[0027] The limiting mechanism further comprises an adjusting wrench, the adjusting wrench is matched with an end of the movable rod away from the ratchet, and the adjusting wrench drives the movable rod to move.

[0028] As an embodiment of the present application, the adjusting wrench is fixed to the end of the movable rod; or, the adjusting wrench is pivotally connected to the shelf, and one end of the adjusting wrench is pivotally connected to the movable rod.

[0029] As an embodiment of the present application, the refrigeration device further includes a slider and a slide rail slidably engaged with the slider, wherein the slide rail is fixed to the box body; the shelf is detachably mounted on the slider;

[0030] The shelf comprises a pair of frames and partitions arranged on the pair of frames, wherein the frames are positioned on the slider;

[0031] The sliding block is provided with a plurality of positioning columns arranged in a vertical direction, the frame is provided with hanging grooves adapted to the positioning columns, and the frame is hung on the positioning columns.

[0032] As an embodiment of the present application, the shelf includes a flip limit unit arranged on the frame body, and the flip limit unit includes a limit member movable on the frame body, and the limit member can be movable to the opening of the hanging slot to be used to resist the positioning column located in the hanging slot to limit the positioning column from slipping out of the hanging slot.

[0033] As an embodiment of the present application, the hanging groove is opened in a direction away from the partition, and the limiting member is slidably arranged along a direction oblique to the opening direction of the hanging groove.

[0034] As an embodiment of the present application, the flip limiting unit further includes a sliding support member provided on the frame, and the sliding support member is provided with a limiting sliding hole adapted to the limiting member.

[0035] As an embodiment of the present application, a limiting cap is provided at one end of the limiting member away from the hanging slot, and the limiting cap is used to abut against the frame to limit the movement of the limiting member toward the hanging slot;

[0036] A side of the frame body facing away from the sliding block is provided with an avoidance groove adapted to the limiting cap, and the limiting cap is positioned in the avoidance groove.

[0037] As an embodiment of the present application, the limiting member is pivotally connected to the frame. Under the action of external force, the limiting member rotates in a direction away from the hanging slot to expose the hanging slot outward. After the external force is removed, the limiting member resets and moves to the opening of the hanging slot.

[0038] As an embodiment of the present application, the refrigeration device further includes a damper and a damping gear cooperating with the damper;

[0039] The damping gear is engaged with the ratchet; or the damping gear is engaged with the ratchet synchronous wheel; or the limiting mechanism also includes a gear rotatably mounted on the shelf, the gear is engaged with the rack, the ratchet synchronous wheel is engaged with the gear, and the damping gear is engaged with the gear or the ratchet synchronous wheel.

[0040] As an embodiment of the present application, the refrigeration equipment also includes a sliding assist unit, which provides assistance for the shelf to move upward. The sliding assist unit includes an elastic telescopic part, which deforms and accumulates rebound force when the shelf moves downward. The elastic telescopic part includes a coil spring.

[0041] As an embodiment of the present application, the shelf includes a pair of frames and a partition provided on the frames; the refrigeration device includes a pair of limit mechanisms respectively matched with the pair of frames; the refrigeration device also includes a synchronization unit for making the two ratchets move synchronously;

[0042] The synchronization unit includes a synchronization rod connected between the two ratchets; or, the limiting mechanism also includes a gear rotatably mounted on the shelf, the gear is engaged with the rack, and the ratchet is engaged with the gear, and the synchronization unit includes a synchronization rod connected between the two ratchets or connected between the two gears.

[0043] As an embodiment of the present application, the limiting mechanism further includes a ratchet synchronous wheel, the ratchet synchronous wheel is rotatably mounted on the shelf, the ratchet synchronous wheel is coaxially arranged with the ratchet wheel, and the ratchet synchronous wheel is engaged with the rack;

[0044] The ratchet synchronizing wheel is located on the inner side of the frame, and the synchronizing rod is connected between the two ratchet synchronizing wheels. As an embodiment of the present application,

[0045] The shelf also has an outer cover and an inner cover arranged on opposite sides of the frame body. The outer cover is detachably fixed on the frame body and covers the ratchet and the ratchet stopper; the inner cover is detachably fixed on the frame body and covers the ratchet synchronization wheel.

[0046] Compared with the existing technology, the present application realizes the control of the movement range of the shelf during the up and down adjustment process by cooperating the ratchet installed rotatably on the shelf with the rack fixed on the box body, and realizes the movement adjustment of the shelf more flexibly and stably; at the same time, the rotation of the ratchet is restricted by the cooperation of the ratchet and the ratchet stop, thereby realizing the locking of the shelf position, which is convenient for operation.

[0047] As used herein, the term "comprise" and variations of the term, such as "comprises," "comprised," "comprising," "including," and "containing" do not exclude other features, components, elements, or steps unless the context clearly requires otherwise. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] FIG1 is a schematic structural diagram of a refrigeration device disclosed in an embodiment of the present application;

[0049] FIG2 is a front view of the refrigeration equipment disclosed in an embodiment of the present application;

[0050] FIG3 is a cross-sectional view taken along the AA direction in FIG2 ;

[0051] FIG4 is a cross-sectional view taken along the line BB in FIG2 ;

[0052] FIG5 is a schematic diagram of the installation structure of the shelf of the refrigeration equipment disclosed in an embodiment of the present application after the cabinet is disassembled;

[0053] FIG6 is a partial enlarged view of point C in FIG5 ;

[0054] FIG7 is a schematic diagram of the installation structure of the shelf and the limiting mechanism in the refrigeration equipment disclosed in the embodiment of the present application;

[0055] FIG8 is an exploded schematic diagram of the interior of the shelf and the limiting mechanism in the refrigeration device disclosed in an embodiment of the present application;

[0056] FIG9 is a schematic diagram of the installation structure of the synchronization rod in the refrigeration equipment disclosed in the embodiment of the present application;

[0057] FIG10 is a schematic structural diagram of the refrigeration device disclosed in an embodiment of the present application after the outer cover and the inner cover are installed and fixed;

[0058] FIG11 is a schematic diagram of the installation structure of a shelf in a refrigeration device disclosed in another embodiment of the present application;

[0059] FIG12 is a schematic diagram of the internal structure of the shelf in FIG11 after the outer cover and the inner cover are removed;

[0060] Description of reference numerals: 1-box, 10-refrigeration compartment,

[0061] 2-shelf, 21-frame, 211-hanging slot, 22-partition, 23-movable rod support column, 24-flip limit unit, 241-limiting member, 242-sliding support member, 2420-limiting sliding hole, 243-limiting cap, 25-shielding plate, 26-outer cover, 27-inner cover,

[0062] 3-limiting mechanism, 31-rack, 32-gear, 33-ratchet, 331-ratchet teeth, 332-gear groove, 34-ratchet synchronous wheel, 35-ratchet stopper, 351-movable rod, 352-reset member, 36-adjusting wrench,

[0063] 4-sliding mechanism, 41-slider, 411-positioning column, 42-slide rail,

[0064] 5-damping unit, 51-damper, 52-damping gear,

[0065] 6-sliding power unit, 61-elastic telescopic part,

[0066] 7-synchronization unit, 71-synchronization rod,

[0067] 8- air duct cover, 81- decorative panel. DETAILED DESCRIPTION

[0068] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limiting the present application.

[0069] An embodiment of the present application discloses a refrigeration device, comprising a box body 1 and a door body arranged on the box body 1, the box body 1 having a refrigeration compartment 10, the door body being used to close the refrigeration compartment 10, a shelf 2 being provided in the refrigeration compartment 10, the shelf 2 being used to carry articles, and 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 their own needs and thereby adjust the space in the refrigeration compartment 10.

[0070] The existing adjustment method is mainly to set multiple sets of support positions on the inner wall of the refrigeration chamber 10 and adjust the shelf 2 by placing the support positions at different heights. This adjustment method requires the entire shelf 2 to be pulled out of the refrigeration chamber 10 first, which is relatively inconvenient.

[0071] In the refrigerator of this embodiment, as shown in Figures 1-6, the shelf 2 is disposed within the housing 1 and is vertically slidable. As the shelf 2 slides vertically, it adjusts its position within the refrigeration compartment 10. The shelf 2 is slidably disposed at the rear side of the refrigeration compartment 10, with the rear side of the refrigeration compartment 10 facing the opening of the refrigeration compartment 10.

[0072] It is understandable that after the shelf 2 is adjusted into place, the adjusted position of the shelf 2 needs to be positioned. Therefore, the refrigeration device disclosed in the present application further includes a limiting mechanism 3, which is used to lock and fix the shelf 2 adjusted into place.

[0073] In one embodiment, as shown in Figures 6-8, the limiting mechanism 3 includes a rack 31, a ratchet 33 and a ratchet stop 35, the rack 31 is fixed on the box body 1; the ratchet 33 is rotatably installed on the shelf 2; the ratchet 33 is engaged with the rack 31; the ratchet stop 35 can move between a locking position and a release position, when in the locking position, the ratchet stop 35 is against the ratchet 33 to limit the rotation of the ratchet 33 when the shelf 2 moves downward; when in the release position, the ratchet 33 can rotate freely in both directions.

[0074] In the locked position, the ratchet 33 can only rotate in one direction, and when rotating in this direction, the shelf 2 moves upward. In the released position, the ratchet 33 can rotate freely in both directions, that is, the ratchet 33 can rotate clockwise or counterclockwise, and the rotation direction of the ratchet 33 is no longer restricted. At this time, the shelf 2 can be raised or lowered in the vertical direction.

[0075] In this embodiment, the ratchet 33 rotatably mounted on the shelf 2 cooperates with the rack 31 fixed on the box body 1 to control the movement range of the shelf 2 during the up and down adjustment process. The ratchet 33 is engaged with the rack 31. When the ratchet 33 rotates along the rack 31, it drives the shelf 2 to move along the extension direction of the rack 31. The cooperation between the ratchet 33 and the rack 31 can more stably achieve the movement and adjustment of the shelf 2.

[0076] In this embodiment, the rotation of the ratchet 33 is restricted by the cooperation between the ratchet 33 and the ratchet stopper 35 , thereby preventing the ratchet 33 from moving up and down along the rack 31 and further preventing the shelf 2 from being adjusted.

[0077] When the shelf 2 needs to move downward, the ratchet stopper 35 is controlled to disengage from the restriction of the ratchet 33, thereby realizing the free rotation of the ratchet 33 in both directions. At this time, the shelf 2 can be moved upward or downward for adjustment.

[0078] The engagement between the ratchet 33 and the rack 31 may be direct engagement or indirect engagement via an intermediate transmission element.

[0079] In one embodiment, the limiting mechanism 3 further includes a ratchet synchronizing wheel 34 rotatably mounted on the shelf 2. The ratchet synchronizing wheel 34 is coaxially arranged with the ratchet wheel 33 and meshes with the rack 31. In other words, in this embodiment, the ratchet synchronizing wheel 34 enables indirect engagement between the ratchet wheel 33 and the rack 31. This allows for more stable movement and adjustment of the shelf 2, while also facilitating the installation and arrangement of the limiting mechanism 3 within the refrigeration equipment.

[0080] In some optional implementations, in order to better achieve a locking effect, the outer diameter of the ratchet synchronization wheel 34 is smaller than the outer diameter of the ratchet wheel 33 .

[0081] The meshing between the ratchet synchronous wheel 34 and the rack 31 may be direct meshing or indirect meshing via an intermediate transmission element.

[0082] In an optional embodiment, the limiting mechanism 3 further includes a gear 32 rotatably mounted on the shelf 2. The gear 32 meshes with the rack 31, and the ratchet synchronizing wheel 34 meshes with the gear 32. That is, the ratchet synchronizing wheel 34 and the rack 31 are indirectly engaged via the gear 32. In this embodiment, a gear 32 is further disposed between the ratchet synchronizing wheel 34 and the rack 31. The provision of the gear 32 increases the number of adjustment levels of the ratchet 33, thereby providing greater flexibility in adjusting the position of the shelf 2 within the housing 1.

[0083] To facilitate the implementation of the above embodiment, the ratchet 33 has a plurality of ratchet teeth 331 and a gear groove 332 formed between two adjacent ratchet teeth 331 . When in the locked position, the ratchet stopper 35 extends into the gear groove 332 and limits the ratchet 33 .

[0084] The gear slot 332 has a first inner wall and a second inner wall that oppose each other. The ratchet stop 35, upon contact with the second inner wall, restricts the rotation of the ratchet 33. When the ratchet stop 35 is within the gear slot 332, the plane of the second inner wall aligns with the direction in which the ratchet stop 35 extends. The first inner wall is an inclined surface, allowing the ratchet stop 35 to move along the first inner wall relative to the ratchet teeth 331, thereby enabling relative rotation between the ratchet 33 and the ratchet stop 35. This arrangement ensures that the unidirectional rotation of the ratchet 33 is restrained by the ratchet stop 35. Therefore, the upward movement of the shelf 2 is not restricted, and only the downward movement of the shelf 2 under its own gravity is restricted.

[0085] In this embodiment, as shown in FIG4 , the outer diameter of the gear 32 is larger than the outer diameter of the ratchet synchronous wheel 34. The larger outer diameter of the gear 32 than the ratchet synchronous wheel 34 can better increase the adjustment level of the ratchet wheel 33, thereby allowing the shelf 2 to have more adjustable high positions, that is, the height adjustment of the shelf 2 is more precise.

[0086] Under the action of external force, when the shelf 2 moves upward, the ratchet 33 rotates and drives the ratchet stop 35 to move in the direction away from the ratchet 33, and the ratchet stop 35 moves from the locked position to the released position. It should be noted that the ratchet stop 35 can be completely moved to the released position or only partially moved in the direction of the released position to avoid the ratchet 33; after the external force is removed, the ratchet stop 35 resets and moves to the locked position.

[0087] It should be noted that the external force acts as a force to lift the shelf 2 upward. The above-mentioned structural setting makes the shelf 2 unrestricted during the upward lifting process. When the shelf 2 is lifted upward, the ratchet stop 35 can move in the direction away from the ratchet 33, that is, from the locked position to the released position, thereby avoiding the rotation of the ratchet 33.

[0088] When the force lifting the shelf 2 upward is removed, indicating that the upward adjustment is in place, the ratchet stop 35 can be reset to the locked position, cooperating with the ratchet 33 to prevent the ratchet 33 from rotating to move the shelf 2 downward, thereby locking the position of the shelf 2.

[0089] When the shelf 2 needs to be moved downward for adjustment, the ratchet stopper 35 is moved from the locked position to the released position. At this time, the ratchet 33 is freed from the restriction of the ratchet stopper 35 and can realize bidirectional rotation in both forward and reverse directions.

[0090] As shown in Figures 5-7, the ratchet stop 35 includes a movable rod 351, which is slidably set on the shelf 2. The movable rod 351 can be moved toward one end of the ratchet 33 to cooperate with the ratchet 33 to limit the rotation of the ratchet 33 when the shelf 2 moves downward, thereby limiting the downward movement of the shelf 2.

[0091] In an optional embodiment, the ratchet 33 has a plurality of ratchet teeth 331 and a gear groove 332 formed between two adjacent ratchet teeth 331. When in the locked position, the ratchet stop 35 extends into the gear groove 332 and limits the ratchet 33. That is, when in the locked position, one end of the movable rod 351 toward the ratchet 33 can move into the gear groove 332 and abut against the ratchet teeth.

[0092] In an optional embodiment, the ratchet stopper 35 further includes a reset member 352 , and the reset member 352 accumulates a rebound force that drives the movable rod 351 to move toward the gear slot 332 .

[0093] Under the action of external force, when the movable rod 351 moves away from the ratchet 33, that is, the movable rod 351 moves from the locked position to the released position, the reset member 352 is deformed and accumulates a rebound force so that after the force driving the movable rod 351 to move is withdrawn, the movable rod 351 can move from the released position to the locked position. When in the locked position, one end of the movable rod 351 extends into the gear slot 332, and when in the released position, one end of the movable rod 351 leaves the gear slot 332.

[0094] To facilitate the movement and control of the movable rod 351, the end of the movable rod 351 away from the ratchet wheel 33 is extended and arranged near the front end of the shelf 2; the front end of the shelf 2 is relatively close to the opening of the refrigeration compartment 10. This structural arrangement allows the movable rod 351 to be controlled at the opening of the refrigeration compartment 10.

[0095] Furthermore, in order to better control the movable rod 351, the limiting mechanism 3 also has an adjusting wrench 36, which cooperates with the end of the movable rod 351 away from the ratchet 33, and the adjusting wrench 36 drives the movable rod 351 to move.

[0096] In this embodiment, the adjustment wrench 36 is arranged at a position close to the front end of the shelf 2, which can more conveniently realize the manipulation of the movable rod 351 and facilitate the adjustment and movement of the shelf 2.

[0097] As shown in Figures 5-8, the shelf 2 in this embodiment includes a pair of frames 21 and partitions 22 supported on the pair of frames 21. The pair of frames 21 are arranged in the refrigeration compartment 10 along the width direction of the refrigeration compartment 10, and the partitions 22 are used to carry items.

[0098] As shown in Figures 7-8, in order to more stably achieve the movement of the movable rod 351, the shelf 2 is provided with a plurality of movable rod support columns 23. The movable rod support columns 23 are provided with through holes that slide with the movable rod 351. The reset member 352 is a compression spring sleeved outside the movable rod 351. One end of the compression spring is fixed to the movable rod 351, and the other end of the compression spring is pressed against the movable rod support column 23.

[0099] The adjusting wrench 36 is fixed on the movable rod 351. The movable rod 351 is controlled by moving the adjusting wrench 36 along the axial direction of the movable rod 351.

[0100] In other embodiments, the adjusting wrench 36 can also be pivotally connected to the shelf 2 (not shown), 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, and the movement control of the movable rod 351 is achieved by rotating the adjusting wrench 36.

[0101] As shown in FIG6-8 , in order to more stably achieve the adjustment of the up and down movement of the shelf 2 , the refrigeration device further includes a sliding mechanism 4 , and the shelf 2 slides up and down along the box body 1 through the sliding mechanism 4 .

[0102] The sliding mechanism 4 includes a slider 41 and a slide rail 42 that slides with the slider 41. The slide rail 42 is fixed to the box 1. The shelf 2 is detachably mounted on the slider 41. In one embodiment, the shelf is positioned on the slider 41.

[0103] In one embodiment, the slider 41 is provided with a plurality of positioning posts 411 arranged in a vertical direction, and the frame 21 is provided with hanging grooves 211 adapted to the positioning posts 411, and the frame 21 is hung on the positioning posts 411. The cooperation between the hanging grooves 211 and the positioning posts 411 facilitates the installation and removal of the shelf 2.

[0104] Although the shelf 2 can be easily installed and removed by the cooperation between the hanging groove 211 and the positioning column 411, the positioning column 411 may easily slip out of the hanging groove 211 during the process of lifting the shelf 2 upward, thereby causing the shelf 2 to detach from the slider 41.

[0105] In order to avoid the occurrence of the above-mentioned problems, the shelf 2 includes a flip limit unit 24 arranged on the frame body 21, and the flip limit unit 24 includes a limit member 241 movable on the frame body 21. The limit member 241 can be moved to the opening of the hanging groove 211 to be used to abut against the positioning column 411 located in the hanging groove 211 to limit the positioning column 411 from slipping out of the hanging groove 211.

[0106] In one embodiment, the hanging slot 211 is open in a direction away from the partition 22, and the stopper 241 is slidably disposed in a direction oblique to the opening direction of the hanging slot 211. Preferably, the stopper 241 is slidably disposed in a direction perpendicular to the opening direction of the hanging slot 211. When the stopper 241 slides to the open position of the hanging slot 211, the hanging slot 211 is closed. The stopper 241 abuts against the positioning post 411, thereby preventing the positioning post 411 from disengaging from the hanging slot 211. The provision of the stopper 241 ensures a more stable installation and fixation of the shelf 2.

[0107] In one embodiment, as shown in FIG. 7-8 , the flip limiting unit 24 further includes a sliding support member 242 disposed on the frame 21 . The sliding support member 242 is provided with a limiting sliding hole 2420 adapted to the limiting member 241 .

[0108] The setting of the limiting sliding hole 2420 can provide directionality for the sliding of the limiting member 241 , thereby achieving smoother movement of the limiting member 241 on the frame 21 .

[0109] A limiting cap 243 is provided 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 .

[0110] 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 .

[0111] The side of the frame 21 facing away from the slider 41 is provided with an escape groove adapted to the limiting cap 243, and the limiting cap 243 is positioned in the escape groove. The setting of the escape groove can prevent the limiting cap 243 from protruding from the outer surface of the frame 21 after contacting the frame 21.

[0112] In the above embodiment, the limiting member 241 is movable on the frame 21 in a sliding manner, and slides between the opening position of the hanging slot 211 and the opening position of the hanging slot 211. In another embodiment, as shown in Figures 11-12, the limiting member 241 can also be moved to the opening position of the hanging slot 211 or the opening position of the hanging slot 211 by rotating. In the scheme shown in Figures 11 and 12, 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 set on the frame 21, the rotation of the limiting member 241 relative to the positioning column 411 is achieved, thereby achieving the restriction of the flipping of the shelf 2. The positioning column limiting structure is a groove body set on the positioning column 411, and the limiting member 241 completes the positioning after rotating into the groove body.

[0113] In one embodiment, the limiting member 241 is pivotally connected to the frame 21. Under the action of external force, the limiting member 241 rotates in a direction away from the hanging groove 211 to expose the hanging groove 211 outward. After the external force is removed, the limiting member 241 returns to the opening of the hanging groove 211.

[0114] It is understandable that, during the process of the position-limiting member 241 returning to its original position, the position-limiting member returning structure can be used to return to its original position. In one embodiment, the position-limiting member returning structure can be a spring.

[0115] The refrigeration equipment also includes a damping unit 5, which includes a damper 51 and a damping gear 52 that cooperates with the damper 51. The damping gear 52 is engaged with the gear 32 or the damping gear 52 is engaged with the ratchet synchronous wheel 34 or the damping gear 52 is engaged with the ratchet 33.

[0116] The damping unit 5 can be set to slowly move downward during the downward movement adjustment of the shelf 2, thereby preventing the shelf 2 from moving downward too quickly under the action of gravity and causing the shelf 2 to move uncontrollably.

[0117] As shown in Figures 7-8, the refrigeration equipment also includes a sliding assist unit 6, which provides assistance for the shelf 2 to move upward. The sliding assist unit 6 includes an elastic telescopic part 61. When the shelf 2 moves downward, the elastic telescopic part 61 deforms and accumulates rebound force. The elastic telescopic part 61 includes a coil spring.

[0118] Since the shelf 2 needs to carry objects, its own weight is relatively large. The setting of the sliding power-assisting unit 6 can provide power for the upward lifting of the shelf 2, thereby facilitating the upward movement adjustment of the shelf 2.

[0119] In an embodiment where the shelf 2 includes a pair of frames 21 and partitions 22 disposed on the frames 21, the refrigeration device includes a pair of limiting mechanisms 3 respectively cooperating with the pair of frames 21, i.e., one frame 21 corresponds to one set of limiting mechanisms 3. In this case, a pair of racks 31 are provided and located on the housing 1, and a pair of gears 32 are provided. The pair of gears 32 respectively mesh with the pair of racks 31, each gear 32 having a corresponding rack 31 to cooperate with, and the pair of gears 32 are respectively pivotally connected to the pair of frames 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 21. The two frames 21 are controlled by the two sets of gear adjustment units.

[0120] As shown in Figures 7-9, in order to control the synchronous up and down movement of the two racks 21, the two ratchets 33 need to rotate synchronously. Therefore, in this embodiment, the shelf also has a synchronization unit 7, and the synchronization unit 7 includes a synchronization rod 71. The synchronization rod 71 is connected between the two ratchets 33 or the synchronization rod 71 is connected between the two gears 32 or the synchronization rod 71 is connected between the two ratchet synchronization wheels 34. The setting of the synchronization rod 71 can make the two ratchets 33 rotate synchronously or the two ratchet synchronization wheels 34 rotate synchronously or the two gears 32 rotate synchronously.

[0121] In this embodiment, the ratchet synchronizing wheels 34 are located inside the racks 21, and the synchronizing rod 71 is connected to the two ratchet synchronizing wheels 34. Because the outer diameter of the ratchet synchronizing wheels 34 is smaller than that of the gear 32, the two racks 21 can be more synchronized. Due to the smaller outer diameter of the ratchet synchronizing wheels 34, the amplitude of the up and down movement of the racks 2 caused by their rotation is smaller, which prevents significant deviation between the two racks 21 during the up and down movement, thereby improving the synchronization of the movement of the two racks 21.

[0122] In this embodiment, the gear 32 and the ratchet synchronizing wheel 34 are pivotally connected to the same side of the frame 21 and are located on the inner side of the frame 21. The inner side of the frame 21 is the side of the pair of frames 21, with one frame 21 facing the other frame 21. This structural arrangement facilitates the connection and fixation between the synchronizing rod 71 and the two ratchet synchronizing wheels 34 or the two gears 32.

[0123] The shelf 2 also has an outer cover 26 and an inner cover 27 arranged on opposite sides of the frame body 21. The outer cover 26 is arranged to cover the outside of the ratchet 33 and the outside of the ratchet stopper 35. The inner cover 27 is also arranged to cover the outside of the gear 32 and the ratchet synchronous wheel 34.

[0124] The arrangement of the inner cover 27 and the outer cover 26 can prevent the gear 32 and the ratchet 33 from being exposed outward, thereby preventing the user's hands from being pinched during use.

[0125] In this embodiment, the refrigeration device further includes an air duct cover plate 8, which 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, with the rear wall of the refrigeration compartment 10 facing the opening of the refrigeration compartment 10. The air duct cover plate 8 is provided with an escape space, within which the frame 21 can slide up and down, and a portion of the rack 31 is exposed outward from the escape space.

[0126] In order to cover the outward exposure of the rack 31, the shelf 2 is also provided with a shielding plate 25, which is fixed on the frame 21 and moves up and down with the frame 21. The shielding plates 25 are provided on the upper and lower sides of the frame 21, and the vertical extension of the shielding plate 25 is not less than half of the vertical extension length of the avoidance space.

[0127] The shielding plate 25 covers the rack 31 during the process of moving up and down, thereby preventing the rack 31 from being exposed outwards and affecting the appearance, and also avoiding the problem of the user's hand being pinched when the rack 31 is exposed outwards.

[0128] In one embodiment, as shown in FIG. 10 , the shielding plate 25 is disposed on the rear side of the air duct cover 8 , and the shielding plate 25 is closer to the rear wall of the refrigeration compartment 10 than the air duct cover 8 .

[0129] In a second embodiment, as shown in Figures 11-12, the baffle plate 25 is arranged on the front side of the air duct cover plate 8, and the baffle plate 25 is farther away from the rear wall of the refrigeration compartment 10 relative to the air duct cover plate 8. In this embodiment, a decorative panel 81 is provided on the air duct cover plate 8, and the decorative panel 81 is arranged on the front side of the baffle plate 25. The decorative panel 81 covers the baffle plate 25, thereby preventing the baffle plate 25 from being excessively exposed to the outside during movement. In addition, the arrangement of the decorative panel 81 can also provide a stable support for the movement of the baffle plate 25. The decorative panel 81 is covered outside the air duct cover plate 8 and forms a space for the baffle plate 25 to move between the decorative panel 81 and the air duct cover plate 8.

[0130] In actual use, if the decorative plate 81 is not present, the end of the shielding plate 25 away from the frame 21 is easily warped due to being directly exposed to the outside, and the user's hand may be easily pinched.

[0131] The above describes in detail the structure, features and effects of the present application based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present application, but the present application does not limit the scope of implementation to what is shown in the drawings. Any changes made in accordance with the concept of the present application, 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 scope of protection of the present application.

Claims

1. A refrigeration device, characterized in that ,include: Box, A shelf, disposed in the box and slidable in a vertical direction; The limiting mechanism comprises a rack, a ratchet and a ratchet stopper, wherein the rack is fixed on the box body; the ratchet is rotatably mounted on the shelf; and the ratchet 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 to limit the rotation of the ratchet when the shelf moves downward; in the releasing position, the ratchet can rotate freely in both directions.

2. The refrigeration equipment according to claim 1, characterized in that: The limiting mechanism also includes a ratchet synchronous wheel, which is rotatably mounted on the shelf, the ratchet synchronous wheel is coaxially arranged with the ratchet wheel, and the ratchet synchronous wheel is meshed with the rack.

3. The refrigeration device according to claim 2, characterized in that: The outer diameter of the ratchet synchronous wheel is smaller than the outer diameter of the ratchet wheel.

4. The refrigeration device according to claim 2, characterized in that: The limiting mechanism also includes a gear rotatably mounted on the shelf, the gear is meshed with the rack, and the ratchet synchronous wheel is meshed with the gear.

5. The refrigeration device according to claim 4, characterized in that: The outer diameter of the gear is greater than the outer diameter of the ratchet synchronous wheel.

6. The refrigeration device according to claim 2, characterized in that: The shelf comprises a pair of frames and partitions arranged on the frames, and the refrigeration device comprises a pair of limiting mechanisms respectively matched with the pair of frames; The ratchet wheel and the ratchet synchronous wheel are arranged on two opposite sides of the frame.

7. The refrigeration device according to claim 1, characterized in that: When the shelf moves upward under the action of an external force, the ratchet wheel rotates and drives the ratchet stopper to move in a direction away from the ratchet wheel, and the ratchet stopper moves from a locking position to a releasing position; After the external force is removed, the ratchet stopper is reset and moved to the locking position.

8. The refrigeration device according to claim 1, characterized in that: The ratchet stopper comprises a movable rod, which is slidably arranged on the shelf, and one end of the movable rod facing the ratchet can be moved to cooperate with the ratchet to limit the rotation of the ratchet when the shelf moves downward.

9. The refrigeration device according to claim 8, characterized in that: The ratchet wheel has a plurality of ratchet teeth and a gear groove formed between adjacent ratchet teeth; one end of the movable rod facing the ratchet wheel can move into the gear groove and abut against the ratchet teeth.

10. The refrigeration device according to claim 9, characterized in that: The ratchet stopper also includes a reset member, which accumulates a rebound force that drives the movable rod to move toward the gear groove.

11. The refrigeration device according to claim 10, characterized in that: The shelf is provided with a plurality of movable rod support columns, the movable rod support columns are provided with through holes which are slidably matched with the movable rods, and the reset member is a compression spring sleeved outside the movable rods.

12. The refrigeration device according to claim 8, characterized in that: The movable rod extends from one end of the ratchet wheel and is arranged near the front end of the shelf; The limiting mechanism also has an adjusting wrench, which cooperates with an end of the movable rod away from the ratchet, and the adjusting wrench drives the movable rod to move.

13. The refrigeration device according to claim 12, characterized in that: The adjusting wrench is fixed to the end of the movable rod; or, the adjusting wrench is pivotally connected to the shelf, and one end of the adjusting wrench is pivotally connected to the movable rod.

14. The refrigeration device according to claim 1, characterized in that: The refrigeration equipment further comprises a slider and a slide rail slidably matched with the slider, wherein the slide rail is fixed on the box body; the shelf is detachably mounted and fixed on the slider; The shelf comprises a pair of frames and partitions arranged on the pair of frames, and the frames are positioned on the slide block; The sliding block is provided with a plurality of positioning posts arranged in a vertical direction, the frame body is provided with hanging grooves matched with the positioning posts, and the frame body is hung on the positioning posts.

15. The refrigeration device according to claim 14, characterized in that: The shelf includes a flip limit unit arranged on the frame body, and the flip limit unit includes a limit piece movable on the frame body. The limit piece can be movable to the opening of the hanging groove to be used to abut against the positioning column located in the hanging groove to limit the positioning column from slipping out of the hanging groove.

16. The refrigeration device according to claim 15, characterized in that: The hanging groove is opened in a direction away from the partition plate, and the limiting member is slidably arranged along a direction oblique to the opening direction of the hanging groove.

17. The refrigeration device according to claim 16, characterized in that: The flip limiting unit further comprises a sliding support member arranged on the frame body, and the sliding support member is provided with a limiting sliding hole matched with the limiting member.

18. The refrigeration device according to claim 16, characterized in that: A limiting cap is provided at one end of the limiting member away from the hanging slot, and the limiting cap is used to abut against the frame to limit the travel of the limiting member moving toward the hanging slot; A side of the frame body facing away from the sliding block is provided with an avoidance groove matched with the limiting cap, and the limiting cap is positioned in the avoidance groove.

19. The refrigeration device according to claim 15, characterized in that: The limiting member is pivotally connected to the frame body. Under the action of external force, the limiting member rotates in a direction away from the hanging slot to expose the hanging slot outward. After the external force is removed, the limiting member returns to the opening of the hanging slot.

20. The refrigeration equipment according to claim 2, characterized in that: The refrigeration equipment further comprises a damper and a damping gear matched with the damper; The damping gear is meshed with the ratchet; or the damping gear is meshed with the ratchet synchronous wheel; or, the limiting mechanism also includes a gear rotatably mounted on the shelf, the gear is meshed with the rack, the ratchet synchronous wheel is meshed with the gear, and the damping gear is meshed with the gear or the ratchet synchronous wheel.

21. The refrigeration device according to claim 1, characterized in that: The refrigeration equipment also includes a sliding assist unit, which provides assistance for the shelf to move upward. The sliding assist unit includes an elastic telescopic part, which deforms and accumulates rebound force when the shelf moves downward. The elastic telescopic part includes a coil spring.

22. The refrigeration device according to claim 1, characterized in that: The shelf comprises a pair of frames and a partition disposed on the frames; the refrigeration device comprises a pair of limit mechanisms respectively matched with the pair of frames; the refrigeration device further comprises a synchronization unit for making the two ratchets move synchronously; The synchronization unit includes a synchronization rod connected between the two ratchets; or, the limiting mechanism also includes a gear rotatably mounted on the shelf, the gear is engaged with the rack, the ratchet is engaged with the gear, and the synchronization unit includes a synchronization rod connected between the two ratchets or between the two gears.

23. The refrigeration device according to claim 22, characterized in that: The limiting mechanism further comprises a ratchet synchronous wheel, the ratchet synchronous wheel is rotatably mounted on the shelf, the ratchet synchronous wheel is coaxially arranged with the ratchet wheel, and the ratchet synchronous wheel is meshed with the rack; The ratchet synchronous wheel is located on the inner side of the frame, and the synchronous rod is connected between the two ratchet synchronous wheels.

24. The refrigeration device according to claim 6, characterized in that: The shelf also has an outer cover and an inner cover arranged on opposite sides of the frame body. The outer cover is detachably mounted and fixed on the frame body and covers the ratchet and the ratchet stopper; the inner cover is detachably mounted and fixed on the frame body and covers the ratchet synchronous wheel.

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