Shelf assembly and refrigeration device

Abstract

Provided are a shelf assembly and a refrigeration device. The shelf assembly comprises a shelf (1) and adjustment mechanisms; the shelf (1) comprises a shelf board (11) and connecting members (12), the connecting members (12) being connected to two sides of the shelf board (11); and the adjustment mechanisms are fitted to and arranged on two sides of the shelf (1) so as to adjust the position of the shelf (1) in a first vertical direction, wherein each adjustment mechanism comprises a rack (2) and a gear (3), the rack (2) is arranged in the first vertical direction, the gear (3) is rotatably connected to a corresponding connecting member (12) of the shelf (1), and the gear (4) is meshed with the rack (3).

Description

Shelf assembly and refrigeration equipment

[0001] The present application claims priority to Chinese Patent Application No. 202420793665.1, filed on April 17, 2024, Chinese Patent Application No. 202410460327.0, filed on April 17, 2024, Chinese Patent Application No. 202410460342.5, filed on April 17, 2024, and Chinese Patent Application No. 202420793510.8, filed on April 17, 2024, the contents of all of the above applications are hereby incorporated by reference in their entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of refrigeration equipment, in particular to a shelf assembly and a refrigeration equipment with the same. BACKGROUND

[0003] Refrigeration equipment such as refrigerators and display cabinets are usually provided with shelves to place various items.

[0004] In order to meet the needs of users to adjust the height of the shelves, many shelves are made adjustable. Users adjust the up-down position of the shelves according to the size of the items placed.

[0005] However, the existing adjustable shelves still have some defects, for example, inconvenient and unstable installation, unstable operation, jamming, and tilting of the two sides of the shelf when adjusting the height, etc. People are looking forward to technical solutions to solve the above problems as soon as possible.

[0006] Any prior art mentioned in the specification does not mean that it is recognized or suggested that the prior art constitutes part of the common general knowledge in any jurisdiction, or can be reasonably expected to be understood, considered relevant and / or combined with other prior art by those skilled in the art. SUMMARY

[0007] The purpose of the present application is to provide a shelf assembly and a refrigeration equipment with the same.

[0008] To achieve one of the above purposes, an embodiment of the present application provides a shelf assembly. The shelf assembly comprises:

[0009] a shelf comprising a shelf plate and a connecting piece connected to both sides of the shelf plate; and

[0010] an adjusting mechanism cooperatively arranged on both sides of the shelf to adjust the position of the shelf in the vertical direction, the adjusting mechanism comprising a rack and a gear, the rack being arranged in the vertical direction, the gear being rotatably connected to the connecting piece, and the gear being arranged in meshing with the rack.

[0011] As a further improvement of the embodiment of the application, the rack comprises a toothed portion engaged with the gear and a leveled portion without teeth, so that when the shelf moves to the adjustment end, the gear is located in the leveled portion and engages with the teeth of the toothed portion close to one end of the leveled portion.

[0012] As a further improvement of the embodiment of the application, the connecting member is provided with a downwardly open hanging groove.

[0013] The adjustment mechanism further comprises a slide rail arranged in the vertical direction, a sliding block cooperating with the slide rail to move along the slide rail, and the rack is fixedly arranged on the slide rail, and the sliding block is provided with a fixing column, and the hanging groove is hung on the fixing column.

[0014] As a further improvement of the embodiment of the application, the adjustment mechanism further comprises:

[0015] a slide rail extending in the vertical direction, the rack is fixedly arranged on the slide rail, and the slide rail is provided with a slide groove parallel to the rack;

[0016] two pulleys cooperating with the slide groove, and the two pulleys are arranged in the vertical direction; and

[0017] a sliding block connecting the pulleys and the connecting member;

[0018] wherein the engagement position of the gear and the rack is arranged such that the distance between the pitch circle of the gear and the pitch line of the rack is , wherein a and b are respectively the distance between the axis of the gear and the axis of the upper pulley in the horizontal direction and the vertical direction, d is the width difference between the slide groove and the pulley in the horizontal direction, and H is the distance between the axes of the two pulleys in the vertical direction.

[0019] As a further improvement of the embodiment of the application, the connecting member is provided with two hanging grooves, the sliding block is provided with two pulleys and two fixing columns, and in the vertical direction, the two fixing columns are arranged close to the middle of the sliding block, and the two pulleys are arranged close to the two ends of the sliding block.

[0020] As a further improvement of the embodiment of the application, the adjustment mechanism further comprises a limiting member, the limiting member is movable relative to the connecting member to block the opening of the hanging groove, so as to limit the fixing column from slipping out of the hanging groove.

[0021] As a further improvement of the embodiment of the application, the shelf assembly further comprises a synchronization mechanism, the synchronization mechanism comprises a synchronization rod and a synchronization wheel arranged at both ends of the synchronization rod, and the synchronization wheel is engaged with the gear.

[0022] As a further improvement of the embodiment of the application, the synchronizer wheel is detachably connected with the synchronizer rod.

[0023] As a further improvement of the embodiment of the application, the connecting member is provided with a mounting hole.

[0024] The shelf assembly further comprises a limiting mechanism, which comprises a ratchet wheel arranged on the connecting member.

[0025] The synchronizer wheel is coaxially arranged with the ratchet wheel, and one side of the synchronizer wheel is connected with the synchronizer rod and the other side of the synchronizer wheel passes through the mounting hole and is connected with the ratchet wheel.

[0026] As a further improvement of the embodiment of the application, the synchronizer wheel is provided with a buckle on the side close to the ratchet wheel, the ratchet wheel is provided with a clearance hole penetrating along the axial direction of the ratchet wheel on the side close to the synchronizer wheel, the clearance hole is provided with an abutting surface on the side away from the synchronizer wheel, and the buckle passes through the clearance hole and abuts against the abutting surface.

[0027] As a further improvement of the embodiment of the application, the buckle is provided with at least two buckles, and the at least two buckles are arranged close to each other on the side away from the abutting surface, and the ratchet wheel is provided with a positioning hole communicating with the clearance hole.

[0028] The shelf assembly is further provided with a pin, which is arranged between the at least two buckles after passing through the positioning hole.

[0029] As a further improvement of the embodiment of the application, the inner wall of the positioning hole is provided with a protrusion, and the end of the pin away from the synchronizer wheel abuts against the protrusion to prevent the pin from slipping off.

[0030] As a further improvement of the embodiment of the application, the shelf assembly further comprises a limiting mechanism, which comprises a ratchet wheel and a movable rod, the ratchet wheel is coaxially arranged with the synchronizer wheel, and the movable rod comprises a locking position for cooperating with the ratchet wheel to limit the rotation of the ratchet wheel when the shelf moves downward and a release position after being separated from the ratchet wheel.

[0031] As a further improvement of the embodiment of the application, the connecting member comprises a supporting part for supporting a shelf plate and a side part connected with the supporting part.

[0032] The end of the movable rod away from the ratchet wheel is provided with a wrench, and the rear end of the wrench abuts against the front end of the side part when the movable rod is in the locking position.

[0033] As a further improvement of the embodiment of the application, the adjusting mechanism is arranged close to the rear end of the shelf, the movable rod is movable in the front-rear direction, and the movable rod is provided with a protruding ring.

[0034] The limiting mechanism is further provided with an elastic member and a limiting block connected with the connecting member, the limiting block is provided with a limiting hole matched with the cross section of the movable rod, the movable rod passes through the limiting hole, and the front end of the elastic member abuts against the rear end of the limiting block and the convex ring.

[0035] As a further improvement of the embodiment of the application, the outer contour of the ratchet wheel is arc-shaped, and the movable rod is provided with a circular sleeve at one end close to the ratchet wheel, and the circular sleeve is made of elastic material.

[0036] As a further improvement of the embodiment of the application, the diameter of the gear is greater than the diameter of the synchronous wheel.

[0037] As a further improvement of the embodiment of the application, the shelf assembly further comprises a damping mechanism, the damping mechanism comprises a damping wheel and a damper providing damping force for the damping wheel, the damping wheel is detachably connected with the damper, and the damping wheel is engaged with the gear.

[0038] Wherein, the pitch circle radius r1 and the number of teeth z1 of the damping wheel satisfy the following formula:

[0039]

[0040] Wherein, k and b are constants in the damping and rotational speed relationship formula of the damper, g is the acceleration of gravity, m is the preset shelf bearing capacity, r2 is the pitch circle radius of the gear, z2 is the number of teeth of the gear, and v is the descending speed of the preset shelf.

[0041] As a further improvement of the embodiment of the application, the connecting member is provided with a through hole.

[0042] The damping wheel is provided with a non-circular hole, the damper is provided with a non-circular cylinder matched with the non-circular hole, the non-circular cylinder passes through the through hole and the non-circular hole in sequence, and the connection between the damping wheel and the damper is realized.

[0043] To achieve one of the above-mentioned purposes, an embodiment of the application provides a refrigeration equipment. The refrigeration equipment comprises a box provided with a refrigeration chamber and a shelf assembly provided in the refrigeration chamber.

[0044] Compared with the prior art, the application has the beneficial effects that in the shelf assembly, the vertical height of the shelf is adjusted by the adjusting mechanism, and through the engagement of the gear and the rack, the operation of the adjusting process is stable, smooth and the shelf plate will not tilt.

[0045] As used herein, the terms "comprise", "comprises" and "comprising", and the terms "include", "includes" and "including", and variations thereof, are not limited to a full-enclosure meaning. For example, a device that "includes" an element does not mean that the device cannot also include other elements. BRIEF DESCRIPTION OF DRAWINGS

[0046] Fig. 1 is a structural schematic diagram of a shelf assembly in the embodiments of the present application.

[0047] Fig. 2 is a structural schematic diagram of another perspective of the shelf assembly in Fig. 1.

[0048] Fig. 3 is a schematic diagram of the cooperation of the right adjustment mechanism, the synchronization mechanism and other mechanisms in the shelf assembly in Fig. 1.

[0049] Fig. 4 is a structural schematic diagram of another perspective in Fig. 3.

[0050] Fig. 5 is a schematic diagram of the state of the shelf plate being horizontal (left) and the front end of the shelf plate being lifted (right) when the gear, the sliding slot and the pulley cooperate.

[0051] Fig. 6 is an enlarged view of A in Fig. 3.

[0052] Fig. 7 is a cooperation side view (inner side) of the mechanisms in Fig. 4.

[0053] Fig. 8 is a sectional view along B-B in Fig. 7.

[0054] Fig. 9 is an enlarged view of C in Fig. 8. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0056] The terms for indicating spatial relative positions such as the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like used herein are for the purpose of convenient description to describe the relationship of one unit or feature relative to another unit or feature as shown in the drawings. The terms for indicating spatial relative positions can be intended to include different orientations of the device in use or in operation other than the orientation shown in the drawings.

[0057] For example, if the device in the figures is turned on its side, elements described as on the "bottom" side of other elements or features would then be oriented upside down, and such terminology is used herein for the sake of descriptive clarity.

[0058] In the description of the present application, it is necessary to explain that, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0059] An embodiment of the present application provides a shelf assembly which can be arranged in a refrigeration device.

[0060] Correspondingly, an embodiment of the present application further provides a refrigeration device which comprises a box body provided with a refrigeration compartment and the aforementioned shelf assembly arranged in the refrigeration compartment.

[0061] Referring to FIGS. 1-9, the aforementioned shelf assembly comprises a shelf 1 and an adjusting mechanism.

[0062] Referring to FIG. 1 in particular, the shelf 1 comprises a shelf plate 11 and two connecting members 12. The shelf plate 11 is used to support stored objects. The two connecting members 12 are connected to the two sides of the shelf plate 11, and are used to be connected with the shelf 1 in cooperation.

[0063] The adjusting mechanism is arranged in cooperation with the two sides of the shelf 1 to adjust the position of the shelf 1 along a first direction.

[0064] Referring to FIGS. 2 and 3 in particular, the adjusting mechanism comprises a rack 2 and a gear 3. The rack 2 is arranged along the first direction, and the gear 3 is rotationally connected with the shelf 1, in particular, the gear 3 is rotationally connected with the connecting members 12.

[0065] The gear 3 is engaged with the rack 2. In this way, in the shelf assembly, the height of the shelf 1 is adjusted through the engagement of the gear 3 and the rack 2, which can make the operation of the adjusting process stable, smooth and the shelf plate 11 will not be inclined.

[0066] Further, the rack 2 comprises a toothed portion 21 and a leveling portion 22.

[0067] The toothed portion 21 is engaged with the gear 3, and the leveling portion 22 is not provided with teeth, so that when the shelf 1 moves to the end of the adjustment, the gear 3 is located in the leveling portion 22, and is engaged with the teeth of the end of the toothed portion 21 close to the leveling portion 22.

[0068] Since the shelf assembly is adjusted along the vertical direction in use, and the rack 2 and the following slide rail 4 are also arranged along the vertical direction, the first direction is the vertical direction in the embodiment taking the shelf assembly in use as an example, and the following is replaced by the vertical direction, and the front is the side close to the user in use, and the left and right directions of the shelf assembly are the left and right directions of the shelf assembly.

[0069] In the shelf assembly provided by the embodiment, the gear 3 meshes with the rack 2 and rolls up and down along the vertical direction to drive the shelf 1 to move along the vertical direction, and the rack 2 has a leveling portion 22 without teeth at one end, which makes the gear 3 unable to mesh with the rack 2.

[0070] The aforementioned adjustment end is the position of the shelf 1 when the shelf 1 cannot be moved under the cooperation of the gear 3 and the rack 2. The adjustment end includes the position of the shelf 1 when the gear 3 is located at the upper end of the rack 2 and the position of the shelf 1 when the gear 3 is located at the lower end of the rack 2.

[0071] When the shelf 1 is installed, the shelf 1 is arranged at the adjustment end, the gear 3 is located at the leveling portion 22, and the gear 3 is engaged with the teeth of the toothed portion 21 close to the end of the leveling portion 22, so that when the height of the shelf 1 is adjusted after the installation of the shelf 1 is completed, the gears 3 on both sides of the shelf 1 are engaged with the toothed portion 21 at the same time, which can avoid the problem of uneven height of the shelf 1 on both sides caused by misaligned installation.

[0072] Preferably, the toothed portion 21 is provided with a long leveling portion 22 above, so that when the shelf 1 is installed, the gear 3 is located at the leveling portion 22 above the toothed portion 21, and after the installation of the shelf 1 is completed, the gear 3 is engaged with the rack 2 by moving down and adjusting the height of the shelf 1 by its own weight, without the need for the user to lift the shelf 1 to realize the engagement of the gear 3 and the rack 2.

[0073] Further, the connecting piece 12 is provided with a hanging groove 121, and the opening of the hanging groove 121 faces downward.

[0074] Specifically, referring to FIG. 4, the adjustment mechanism further includes a slide rail 4 and a sliding block 5.

[0075] The slide rail 4 is arranged to extend along the vertical direction, and the sliding block 5 cooperates with the slide rail 4 to move along the slide rail 4.

[0076] The slide rail 4 is provided with a fixed column 52. The hanging groove 121 is hung on the fixed column 52 to realize the connection of the shelf 1 and the sliding block 5. In this way, not only can the shelf 1 and the adjustment mechanism be conveniently connected, facilitating transportation and installation, but also the shelf 1 can be prevented from tilting forward by hanging the fixed column 52 through the hanging groove 121.

[0077] Furthermore, the slide rail 4 is further provided with a sliding groove 41, and the sliding groove 41 is parallel to the rack 2.

[0078] The adjusting mechanism further comprises a pulley 51, which is arranged on the sliding block 5 and in the sliding groove 41.

[0079] That is, the sliding block 5 connects the pulley 51 and the connecting piece 12, and the sliding block 5 moves up and down along the slide rail 4 by the cooperation of the pulley 51 and the sliding groove 41, thereby driving the shelf 1 to move up and down. In this way, the running stability and smoothness of the adjusting process can be further improved, and the shelf 1 can be prevented from tilting, by the cooperation of the meshing of the gear 3 and the rack 2 and the sliding cooperation of the pulley 51 and the sliding groove 41.

[0080] It should be noted that the reference number 51 in the figure refers to the position of the pulley 51 rather than the pulley 51 itself, which is blocked by the sliding block and cannot be shown.

[0081] Further, the rack 2 is fixedly arranged on the slide rail 4.

[0082] Specifically, as shown in FIG. 4, the rack 2 is fixed at the front end of the slide rail 4, and the teeth of the rack 2 face forward, and the gear 3 is connected with the connecting piece 12.

[0083] The opening direction of the sliding groove 41 faces the left and right sides.

[0084] When the shelf 1 moves up and down, the pulley 51 rolls in the sliding groove 41 to guide, which can improve the movement stability of the shelf 1.

[0085] Further, the connecting piece 12 is provided with two hanging grooves 121, and the sliding block 5 is provided with two pulleys 51 and two fixed columns 52.

[0086] In the vertical direction, the two fixed columns 52 are arranged close to the middle of the sliding block 5, and the two pulleys 51 are arranged close to the two ends of the sliding block 5.

[0087] Among them, the two pulleys 51 are arranged in the sliding groove 41 in the vertical direction.

[0088] Usually, in the horizontal direction, the width of the sliding groove 41 and the width of the pulley 51 usually have errors, and since the sliding groove 41 opens in the left and right directions, that is, the width direction of the sliding groove 41 is the front and back direction, so that when the shelf 1 naturally places the goods or adjusts the height upward, the pulley 51 will move forward and backward in the sliding groove 41 due to the width difference between the pulley 51 and the sliding groove 41, thereby causing the shelf 1 to be inclined forward or the front end to be raised, and the gear 3 and the rack 2 are also easy to be stuck, which causes the height of the shelf 1 to be unable to be adjusted.

[0089] In order to overcome this problem, preferably, as shown in FIG. 5, the meshing position of the gear 3 and the rack 2 is arranged as follows: the distance between the division circle of the gear 3 and the division line of the rack 2 is greater than the width of the pulley 51. .

[0090] Wherein, a is the distance between the axis of the gear 3 and the axis of the upper pulley 51 in horizontal direction when the shelf 1 is horizontal, b is the distance between the axis of the gear 3 and the axis of the upper pulley 51 in vertical direction when the shelf 1 is horizontal, d is the width difference between the sliding groove 41 and the pulley 51 in horizontal direction, and H is the distance between the axes of the two pulleys 51 in vertical direction.

[0091] Thus, in the ideal state, the shelf 1 is horizontal, the distance between the axis of the gear 3 and the axis of the upper pulley 51 in horizontal direction is a, and the distance between the axis of the gear 3 and the axis of the upper pulley 51 in vertical direction is b, the angle between the line connecting the axis of the gear 3 and the axis of the upper pulley 51 and the horizontal line is However, due to the width difference d between the sliding groove 41 and the pulley 51, after lifting the shelf 1, the lower pulley 51 will move forward by a distance d, so that the lower pulley 51 rotates by an angle with respect to the upper pulley 51, at this time, the angle between the line connecting the axis of the gear 3 and the axis of the upper pulley 51 and the horizontal line is , and the distance between the axis of the gear 3 and the axis of the upper pulley 51 in horizontal direction is Therefore, after the gear 3 and the rack 2 just engage, a distance in horizontal direction is reserved between the gear 3 and the rack 2 to prevent the gear 3 from being stuck with the rack 2 after lifting the shelf 1 or deflection of the front end of the shelf 1 after placing an object.

[0092] In addition, in this application, since the fixed column 52 and the pulley 51 are both arranged on the sliding block 5, the deflection amount of the pulley 51 away from the rotation point is greater than the deflection amount of the fixed column 52 close to the rotation point, therefore, when the two pulleys 51 are arranged outside the two fixed columns 52, the deflection amount of the fixed column 52 is smaller, that is, the deflection amount of the shelf 1 connected to the fixed column 52 is also smaller.

[0093] Of course, the positions of the hanging groove 121 and the fixed column 52 can also be interchanged, the hanging groove 121 is arranged on the sliding block 5, and the fixed column 52 is arranged on the connecting piece 12, at this time, the hanging groove 121 needs to be opened upward, and the positional relationship between the fixed column 52 and the pulley 51 becomes the positional relationship between the hanging groove 121 and the pulley 51, that is, in the vertical direction, the two hanging grooves 121 are arranged close to the middle of the sliding block 5, and the two pulleys 51 are arranged close to the two ends of the sliding block 5.

[0094] Further, referring to FIGS. 3 and 4, the adjusting mechanism further comprises a limiting piece 6.

[0095] The limiting piece 6 can be moved relative to the connecting piece 12 to block the opening of the hanging groove 121, so as to limit the fixed column 52 from slipping out of the hanging groove 121.

[0096] As shown in FIG. 4, the limiting member 6 is limited to move in the front and back direction by a lock 61. When moving forward, the limiting member 6 is away from the opening of the hanging groove 121, so that the hanging groove 121 can be hung on the fixed column 52. When moving backward, the opening of the hanging groove 121 is blocked, so that the hanging groove 121 can be separated from the fixed column 52 when the shelf 1 is lifted.

[0097] In some embodiments, the shelf assembly further comprises a synchronization mechanism.

[0098] The synchronization mechanism comprises a synchronization rod 71 and a synchronization wheel 72. The synchronization wheel 72 is arranged at both ends of the synchronization rod 71, and the synchronization wheel 72 is engaged with the gear 3.

[0099] More specifically, the both ends of the synchronization rod 71 are non-circular, and the synchronization wheel 72 is correspondingly arranged with a non-circular groove 721 matched with the non-circular structure of the both ends of the synchronization rod 71, so that the non-circular structure of the end of the synchronization rod 71 is inserted into the non-circular groove 721 of the synchronization wheel 72.

[0100] The synchronization wheel 72 at both ends of the synchronization rod 71 is respectively engaged with the gear 3 on both sides of the shelf 1, so that the synchronization is better when the shelf 1 is moved up or down.

[0101] Of course, in some embodiments, the synchronization wheel 72 and the gear 3 can be combined into one, that is, the both ends of the synchronization rod 71 are connected with the gear 3, so that the effect of enhancing the synchronization can be achieved.

[0102] Further, the synchronization wheel 72 is detachably connected with the synchronization rod 71. In this way, the synchronization rod 71 can be transported in the form of a spare part, which has a smaller volume and lower transportation cost.

[0103] Further, as shown in FIG. 4 to FIG. 9, the shelf assembly further comprises a limiting mechanism.

[0104] The limiting mechanism comprises a ratchet wheel 81 arranged on the connecting member 12, and the ratchet wheel 81 is coaxially arranged with the synchronization wheel 72.

[0105] Further, the connecting member 12 is provided with a mounting hole 1231.

[0106] The synchronization wheel 72 is coaxially arranged with the ratchet wheel 81, and one side of the synchronization wheel 72 is detachably connected with the synchronization rod 71, and the other side of the synchronization wheel 72 passes through the mounting hole 1231 and is connected with the ratchet wheel 81.

[0107] In this way, by arranging the synchronization mechanism for enhancing the synchronization of both sides of the shelf 1 and the limiting mechanism for limiting the height adjustment, in order to achieve the synchronization, the synchronization wheel 72 is engaged with the gear 3, and the ratchet wheel 81 is coaxially arranged with the synchronization wheel 72, so that the rotation of the ratchet wheel 81 is limited to lock the position of the synchronization wheel 72 and the gear 3.

[0108] When the shelf assembly is assembled, since the shelf 11 needs to be transported to the factory for final installation, the synchronization rod 71, the synchronization wheel 72, the ratchet 81 and the connecting piece 12 need to be fixed during transportation. In this way, the synchronization wheel 72 and the ratchet 81 are fixed on both sides of the connecting piece 12, so that the synchronization rod 71 and the synchronization wheel 72 can be transported to the factory in separate parts, and then the two ends of the synchronization rod 71 can be directly connected to the synchronization wheel 72, thereby reducing transportation costs.

[0109] Furthermore, the limiting mechanism further includes a movable rod 82 , which includes a locking position for cooperating with the ratchet 81 to limit the rotation of the ratchet 81 when the shelf 1 moves downward, and a release position after being separated from the ratchet 81 .

[0110] As shown in FIG. 6 , the adjustment mechanism is disposed near the rear end of the shelf 1 , and the movable rod 82 is movable in the front-rear direction and is provided with a protruding ring 821 .

[0111] The limiting mechanism is further provided with an elastic member and a limiting block 84 .

[0112] The limiting block 84 is connected to the connecting member 12 , and the limiting block 84 is provided with a limiting hole 841 that matches the cross section of the movable rod 82 , and the movable rod 82 passes through the limiting hole 841 .

[0113] The front end of the elastic member abuts against the limiting block 84 , and the rear end of the elastic member abuts against the convex ring 821 .

[0114] There are two limiting members 6 , and the limiting holes 841 are used to limit the movable rod 82 to move only in the front-back direction.

[0115] The elastic member is preferably a spring 83, which is sleeved on the movable rod 82 and cooperates with the limiting member 6 located at the front end.

[0116] After the movable rod 82 is forced to move forward, the spring 83 is compressed.

[0117] After the movable rod 82 loses its force, the restoring force of the spring 83 causes the movable rod 82 to move backward and cooperate with the ratchet 81 to lock the ratchet 81, thereby locking the relative movement of the gear 3 and the rack 2, thereby locking the position of the shelf 1.

[0118] When the movable rod 82 is in the locked position, if the ratchet 81 rotates counterclockwise in FIG. 4 (corresponding to the shelf 1 moving upward), the ratchet 81 pushes the movable rod 82 forward.

[0119] It should be noted that the movable rod 82 may be completely moved to the release position, or may only be partially moved in the direction of the release position to avoid the ratchet 81 .

[0120] After the shelf 1 stops moving upward, the movable rod 82 is reset to the locking position under the action of the spring 83 .

[0121] If the ratchet wheel 81 has a tendency to rotate clockwise in Figure 4 (corresponding to the downward movement of the shelf 1), the ratchet wheel 81 cannot rotate under the locking of the movable rod 82, so that the gear 3 and the rack 2 cannot move relatively, avoiding the downward movement of the shelf 1 under the weight of the objects placed thereon.

[0122] When the movable rod 82 is in the release position, the rotation of the ratchet wheel 81 is not restricted and can rotate in both directions, i.e. the shelf 1 can move upward and downward.

[0123] Of course, the locking and releasing of the ratchet wheel 81 by the movable rod 82 is not limited to the above-mentioned manner, and the movable rod 82 can also be arranged to move vertically close to and away from the ratchet wheel 81 to reach the locking position and the release position, or the movable rod 82 can be arranged to move horizontally to the rear to reach the locking position and to the front to reach the release position; or other arrangements that can achieve the locking and releasing of the ratchet wheel 81 by the movable rod 82, which will not be described in detail here.

[0124] Further, the outer contour of the ratchet wheel 81 is arc-shaped.

[0125] The end of the movable rod 82 close to the ratchet wheel 81 is provided with a circular sleeve made of elastic material.

[0126] When the movable rod 82 moves forward and then returns to the locking position under the restoring force of the spring 83, the arc-shaped ratchet wheel 81 has a small contact area with the movable rod 82.

[0127] The end of the movable rod 82 close to the ratchet wheel 81 is provided with a circular sleeve, which further reduces the contact area between the ratchet wheel 81 and the movable rod 82.

[0128] In this way, the contact area between the ratchet wheel 81 and the movable rod 82 is changed from the original surface contact to point contact, greatly reducing the noise generated by the impact of the movable rod 82 and the ratchet wheel 81.

[0129] Moreover, the circular sleeve made of elastic material acts as a buffer, further reducing the noise generated by the impact.

[0130] In some embodiments, the diameter of the gear 3 is greater than the diameter of the synchronous wheel 72.

[0131] The diameter of the gear 3 is greater than the diameter of the synchronous wheel 72, which makes the synchronous wheel 72 rotate more than one revolution when the gear 3 rotates one revolution, and the ratchet wheel 81 coaxially arranged with the synchronous wheel 72 also rotates more than one revolution, i.e. when the shelf 1 is adjusted to the same height, the larger the diameter of the gear 3, the greater the angle of rotation of the ratchet wheel 81, and the more teeth the ratchet wheel 81 can lock in the adjustment height, the greater the adjustment accuracy.

[0132] In some embodiments, the connecting piece 12 comprises a supporting part 122 arranged horizontally to support the shelf 11 and a side part 123 connected to the supporting part 122.

[0133] The free end of the movable rod 82 away from the ratchet wheel 81 is provided with a wrench 823.

[0134] When the movable rod 82 is in the locking position, the rear end of the wrench 823 abuts against the front end of the side part 123.

[0135] The wrench 823 is arranged at the free end of the movable rod 82 away from the ratchet wheel 81, so that the user can move the movable rod 82 from the locking position to the releasing position by holding the wrench 823 at the front end, thereby facilitating the adjustment of the shelf 1.

[0136] As shown in FIG. 8, the synchronous wheel 72 is provided with buckles 722.

[0137] Specifically, the side of the synchronous wheel 72 close to the ratchet wheel 81 is provided with two buckles 722 arranged in opposite directions.

[0138] Correspondingly, the ratchet wheel 81 is provided with a clearance hole 811.

[0139] Specifically, the side of the ratchet wheel 81 close to the synchronous wheel 72 is provided with a clearance hole 811 penetrating along the axial direction of the ratchet wheel 81, and the side of the clearance hole 811 away from the synchronous wheel 72 is provided with an abutting surface 8111.

[0140] The buckle 722 abuts against the abutting surface 8111 after penetrating through the clearance hole 811, so that the synchronous wheel 72 and the ratchet wheel 81 are connected.

[0141] In addition, as shown in FIG. 8, the side of the ratchet wheel 81 close to the synchronous wheel 72 protrudes towards the mounting hole 1231 at the position corresponding to the mounting hole 1231, and the buckle 722 penetrates through the clearance hole 811 and the mounting hole 1231 at the same time, so that the synchronous wheel 72, the ratchet wheel 81 and the connecting piece 12 are finally fixed.

[0142] Further, the buckle 722 is provided with at least two buckles 722 arranged close to each other on the side away from the abutting surface 8111.

[0143] As shown in FIG. 8, the buckle 722 is provided with two buckles 722 arranged in opposite directions. Of course, the buckle 722 can also be provided with three, four or more.

[0144] In order to prevent the buckle 722 from loosening and separating from the clearance hole 811, the ratchet wheel 81 is further provided with a positioning hole 812 communicating with the clearance hole 811, and a pin 813 is arranged in the positioning hole 812 between the at least two buckles 722 arranged in opposite directions.

[0145] Since the length of the buckle 722 is relatively small due to the need to pass through the accommodation hole 811, the elastic swing range is large, and there is a risk of disengagement from the accommodation hole 811 in the event of a collision during transportation. Therefore, the pin 813 is arranged between the two buckles 722 arranged opposite to each other, to prevent the buckle 722 from disengaging; that is, to prevent the two buckles 722 from deviating towards each other at one end to cause disengagement from the abutting surface 8111, so that the synchronous wheel 72 and the ratchet wheel 81 are disengaged.

[0146] Furthermore, the inner wall of the positioning hole 812 is provided with a protrusion 8121, and the end of the pin 813 away from the synchronous wheel 72 abuts against the protrusion 8121, thereby preventing the buckle 722 from disengaging from the accommodation hole 811 and preventing the pin 813 from slipping out of the positioning hole 812.

[0147] In some embodiments, the shelf assembly further comprises a damping mechanism.

[0148] The damping mechanism comprises a damping wheel 91 and a damper 92.

[0149] The damper 92 provides a damping force for the damping wheel 91, the damping wheel 91 is detachably connected with the damper 92, and the damping wheel 91 is engaged with the gear 3.

[0150] Wherein, the pitch circle radius r1 and the number of teeth z1 of the damping wheel 91 satisfy the following formula:

[0151]

[0152] Wherein, k, b are constants in the damping and rotational speed relationship formula of the damper, g is the acceleration of gravity, m is the preset load bearing capacity of the shelf 1, r2 is the pitch circle radius of the gear 3, z2 is the number of teeth of the gear 3, and v is the preset descending speed of the shelf 1.

[0153] The rotational speed ω1 and the number of teeth z1 of the damping wheel 91 and the rotational speed ω2 and the number of teeth z2 of the gear 3 satisfy: ω1×z1=ω2×z2 (Formula 1), then , the descending speed v of the shelf 1 is the linear speed of the gear 3, and the rotational speed ω2 of the gear 3 is , r2 is the pitch circle radius of the gear 3, then (Formula 2).

[0154] The damping T of the damper 92 and the rotational speed ω satisfy a linear function: T=kω+b, the rotational speed ω of the damper 92 is the rotational speed ω1 of the damping wheel 91, the damping force F output by the damping wheel 91 is T / r1, and r1 is the pitch circle radius of the damping wheel 91. Then the descending acceleration of the shelf 1 is (Formula 3), m is the weight of the shelf 1, specifically the total weight of the shelf 1 itself and the weight of the objects placed thereon; if the descending speed of the shelf 1 is to be kept constant, the descending acceleration a of the shelf 1 is 0, then (Formula 4).

[0155] Since the gear 3 is engaged with the rack 2, it cannot be replaced, and thus only the pitch circle radius r1 and the number of teeth z1 of the damping wheel 91 can be changed. As can be seen from Formula 4, if the weight of the shelf 1 is increased, the pitch circle radius r1 and / or the number of teeth z1 of the damping wheel 91 need to be reduced.

[0156] In order to facilitate the replacement of the damping wheel 91, the connecting member 12 is provided with a through hole, the damping wheel 91 is provided with a non-circular hole along the axis, and the damper 92 is provided with a non-circular cylinder which is matched with the non-circular hole. The non-circular cylinder passes through the through hole and the non-circular hole in sequence, thereby realizing the connection between the damping wheel 91 and the damper 92. Thus, the damping wheel 91 can be detached from the non-circular cylinder according to the weight of the shelf 1 and replaced.

[0157] It should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

[0158] The above series of detailed descriptions are only specific descriptions of the feasible embodiments of the present application, and are not intended to limit the protection scope of the present application. Any equivalent embodiments or changes made without departing from the spirit of the present application should be included in the protection scope of the present application.

Claims

1. A shelving assembly comprising: The shelf assembly comprises: a shelf including a shelf plate and a connecting piece connected to two sides of the shelf plate; and an adjusting mechanism arranged on both sides of the shelf to adjust the position of the shelf in the vertical direction, the adjusting mechanism comprising a rack and a gear, the rack being arranged in the vertical direction, and the gear being rotatably connected to the connecting piece and being arranged in mesh with the rack. The rack comprises a toothed portion meshing with the gear and a leveling portion without teeth, so that when the shelf moves to the end of adjustment, the gear is located in the leveling portion and overlaps with the teeth of the toothed portion close to one end of the leveling portion.

2. The shelf assembly of claim 1, wherein, The connecting piece is provided with a downwardly open hanging groove; 3. The shelf assembly of claim 1, wherein, The adjusting mechanism further comprises a slide rail arranged in the vertical direction, a slide block cooperating with the slide rail to move along the slide rail, the rack being fixedly arranged on the slide rail, and the slide block being provided with a fixed column, and the hanging groove being hung on the fixed column. The adjusting mechanism further comprises:

4. The shelf assembly of claim 1, wherein, a slide rail extending in the vertical direction, the rack being fixedly arranged on the slide rail, and the slide rail being provided with a slide groove parallel to the rack; two pulleys cooperating with the slide groove, the two pulleys being arranged in the vertical direction; and a slide block connecting the pulleys and the connecting piece. Wherein, a and b are the distances between the axis of the gear and the axis of the upper pulley in the horizontal and vertical directions respectively, d is the width difference between the slide groove and the pulley in the horizontal direction, and H is the distance between the axes of the two pulleys in the vertical direction. The meshing position of the gear and the rack is set so that the distance between the division circle of the gear and the division line of the rack is The connecting piece is provided with two hanging grooves, the slide block is provided with two pulleys and two fixed columns, and in the vertical direction, the two fixed columns are arranged close to the middle of the slide block, and the two pulleys are arranged close to the two ends of the slide block.

5. The shelf assembly of claim 3 or 4, wherein, The adjusting mechanism further comprises a limiting piece, which can be moved relative to the connecting piece to block the opening of the hanging groove to limit the slide column from sliding out of the hanging groove.

6. The shelf assembly of claim 5, wherein, The shelf assembly further comprises a synchronization mechanism, the synchronization mechanism comprising a synchronization rod and a synchronization wheel arranged at both ends of the synchronization rod, the synchronization wheel meshing with the gear.

7. The shelf assembly of claim 1, wherein, The synchronization wheel and the synchronization rod are detachably connected.

8. The shelf assembly of claim 7, wherein, The connecting piece is provided with a mounting hole; 9. The shelf assembly of claim 7, wherein, The shelf assembly further comprises a limiting mechanism, the limiting mechanism comprising a ratchet wheel arranged on the connecting piece; The synchronization wheel and the ratchet wheel are coaxially arranged, one side of the synchronization wheel is connected with the synchronization rod, and the other side passes through the mounting hole and is connected with the ratchet wheel. The side of the synchronization wheel close to the ratchet wheel is protrusively provided with a buckle, the side of the ratchet wheel close to the synchronization wheel is provided with a clearance hole penetrating in the axial direction of the ratchet wheel, the side of the clearance hole away from the synchronization wheel is provided with an abutting surface, and the buckle passes through the clearance hole and abuts against the abutting surface.

10. The shelving assembly of claim 9, wherein, The buckle is provided with at least two buckles, and the at least two buckles are arranged close to each other on the side away from the abutting surface, and the ratchet wheel is provided with a positioning hole communicating with the clearance hole; 11. The shelf assembly of claim 10, wherein, The shelf assembly is further provided with a pin, which is arranged between the at least two buckles after passing through the positioning hole. The inner wall of the positioning hole is provided with a protrusion, and the end of the pin away from the synchronization wheel abuts against the protrusion to prevent the pin from sliding out.

12. The shelf assembly of claim 11, wherein, ​ 13. The shelf assembly of claim 7, wherein, The shelf assembly further comprises a limiting mechanism, the limiting mechanism comprises a ratchet wheel and a movable rod, the ratchet wheel is coaxially arranged with the synchronous wheel, the movable rod comprises a locking position matched with the ratchet wheel to limit rotation of the ratchet wheel when the shelf moves downward, and a release position separated from the ratchet wheel.

14. The shelf assembly of claim 13, wherein, The connecting piece comprises a receiving part for supporting a shelf plate and a side part connected with the receiving part; The movable rod is provided with a wrench at an end away from the ratchet wheel, and the wrench rear end abuts against the front end of the side part when the movable rod is in the locking position.

15. The shelf assembly of claim 13, wherein, The adjusting mechanism is arranged close to the rear end of the shelf, the movable rod is movable in the front-rear direction and is provided with a convex ring; The limiting mechanism is further provided with an elastic member and a limiting block connected with the connecting piece, the limiting block is provided with a limiting hole matched with the cross section of the movable rod, the movable rod passes through the limiting hole, and the elastic member front end abuts against the limiting block and the rear end abuts against the convex ring.

16. The shelf assembly of claim 13, wherein, The ratchet wheel has an arc-shaped contour, and the movable rod is provided with a circular sleeve at an end close to the ratchet wheel, the circular sleeve is made of elastic material.

17. The shelf assembly of claim 7, wherein, The diameter of the gear is greater than the diameter of the synchronous wheel.

18. The shelf assembly of claim 1, wherein, The shelf assembly further comprises a damping mechanism, the damping mechanism comprises a damping wheel and a damper providing damping force for the damping wheel, the damping wheel is detachably connected with the damper, and the damping wheel is engaged with the gear; Wherein, the pitch circle radius r1 and the number of teeth z1 of the damping wheel satisfy the following formula: Wherein, k and b are constants in the damping and rotation speed relationship formula of the damper, g is the acceleration of gravity, m is the preset shelf bearing capacity, r2 is the pitch circle radius of the gear, z2 is the number of teeth of the gear, and v is the preset descending speed of the shelf.

19. The shelf assembly of claim 18, wherein, The connecting piece is provided with a through hole; The damping wheel is provided with a non-circular hole, the damper is provided with a non-circular cylinder matched with the non-circular hole, the non-circular cylinder passes through the through hole and the non-circular hole in sequence to realize the connection of the damping wheel and the damper.

20. A refrigeration appliance characterized by, The shelf assembly comprises a box body provided with a refrigeration compartment and a shelf assembly arranged in the refrigeration compartment, and the shelf assembly is any one of claims 1-19.

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