CN212585282U

CN212585282U - A kind of refrigerator

Info

Publication number: CN212585282U
Application number: CN202021108714.1U
Authority: CN
Inventors: 高伟康; 王磊; 李鑫; 张帅帅; 于一飞
Original assignee: Hisense Ronshen Guangdong Refrigerator Co Ltd
Current assignee: Hisense Ronshen Guangdong Refrigerator Co Ltd; Hisense Ronshen Yangzhou Refrigerator Co Ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-02-23
Anticipated expiration: 2030-06-15

Abstract

The application discloses a refrigerator relates to refrigeration plant technical field. On the premise of automatically adjusting the height of the lifting layer frame, the automatic leveling of the lifting layer frame can be realized, so that the maintenance cost is saved. This application includes the lift layer frame, first motor, the second motor, first locating part, second locating part and the control unit etc, lift layer frame sliding connection is in the storage chamber, the one end winding of first haulage rope is on first motor, the lift layer frame is connected to the other end of first haulage rope, the one end winding of second haulage rope is on the second motor, the lift layer frame is connected to the other end of second haulage rope, first locating part and second locating part are located same horizontal plane, when the lift layer frame is leveled to needs, control it and rise, when the one end of lift layer frame reachs the upper limit position, the first motor stall of control unit control, when the other end of lift layer frame reachs the upper limit position, the control unit control second motor stall, this application can be used for promoting the performance of refrigerator.

Description

A kind of refrigerator

Technical Field

The application relates to the technical field of refrigeration equipment, in particular to a refrigerator.

Background

A refrigerator is an apparatus for preserving food by maintaining the interior of a cabinet in a low temperature state using refrigeration. With the increasing improvement of life quality, the occupancy rate of the multi-door refrigerator with the characteristics of large volume, multiple functions, classified storage and the like gradually increases, and the intelligent requirement degree of the refrigerator products by people is higher and higher.

The shelf in current refrigerator freezer is mostly the unchangeable shelf of rigidity, usually at the relative both sides shaping courage muscle of refrigerator inner bag, the shelf place on the courage muscle can. In order to facilitate adjustment of users, a plurality of liner ribs are reserved to adjust the position of the shelf in the design of the refrigerator. However, the height between the shelves cannot adapt to the placement of articles with different heights, the storage space has certain limitation, the space utilization rate in the refrigerator is low, and the user experience is influenced.

In order to solve the above technical problems, the prior art provides an automatic lifting layer rack mechanism, which comprises a lifting layer rack arranged in a storage chamber and a layer rack driving mechanism for driving the lifting layer rack to move up and down, wherein the layer rack driving mechanism comprises a driving motor, slide rail assemblies respectively fixed on two opposite sides of the storage chamber and a support member slidably connected to the slide rail assemblies, a first pulley is fixed on an output shaft of the driving motor, second pulleys for converting the traction direction of traction ropes are respectively arranged on the left side and the right side of the storage chamber, one end of each of the two traction ropes is respectively fixed on the first pulley, the middle positions of the two traction ropes are respectively wound around the second pulleys on two sides of the storage chamber, the other ends of the traction ropes are respectively fixed on the support member, the support member is fixedly connected with the lifting layer rack, the lifting layer rack can be lifted or lowered by controlling the forward and, thereby adjusting the height of the lifting shelf. The structure has the defects that after the two traction ropes at the two ends of the lifting layer frame are connected to the same motor, when the two traction ropes are inconsistent in length after being used for a period of time, the two ends of the lifting layer frame are uneven and cannot be automatically leveled, and a professional is required to adopt a special leveling device for leveling, so that the operation is complex, and the maintenance cost is increased.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a refrigerator, can also realize the auto leveling of lift layer frame under the prerequisite that can the automatic adjustment lift layer frame height to practice thrift cost of maintenance.

To achieve the above object, an embodiment of the present application provides a refrigerator including: a storage chamber; a door for opening or closing the storage chamber; the refrigerator further includes: the lifting shelf is connected in the storage chamber in a sliding manner along the vertical direction; the device comprises a first motor and a second motor, wherein a first pulley is arranged on an output shaft of the first motor, and a second pulley is arranged on an output shaft of the second motor; the first end of the first traction rope is wound on the first pulley, and the second end of the first traction rope is connected with the first end of the lifting layer frame; a first end of the second traction rope is wound on the second pulley, and a second end of the second traction rope is connected with a second end of the lifting layer frame; the first limiting piece is used for limiting the upper limit position of the first end of the lifting shelf; the second limiting piece is used for limiting the upper limit position of the second end of the lifting shelf; the first limiting part and the second limiting part are positioned on the same horizontal plane; the control unit can control the first motor to stop rotating when the first end of the lifting shelf reaches the upper limit position; when the second end of the lifting shelf reaches the upper limit position, the control unit can control the second motor to stop rotating.

The refrigerator provided by the embodiment of the application comprises a storage chamber, a door body for opening or closing the storage chamber, a lifting layer frame, a first motor, a second motor, a first traction rope, a second traction rope, a first limiting piece, a second limiting piece and a control unit, wherein the lifting layer frame is connected in the storage chamber in a sliding mode along the vertical direction, a first pulley is arranged on an output shaft of the first motor, a second pulley is arranged on an output shaft of the second motor, a first end of the first traction rope is wound on the first pulley, a second end of the first traction rope is connected to a first end of the lifting layer frame, a first end of the second traction rope is wound on the second pulley, a second end of the second traction rope is connected to a second end of the lifting layer frame, the motor drives the lifting layer frame to move up and down in the storage chamber through the traction rope, the purpose of automatically adjusting the height of the lifting layer frame is achieved, and therefore a user can store food materials with, the space utilization rate of the refrigerator is improved; the first limiting part and the second limiting part are located on the same horizontal plane, when the lifting layer frame needs to be leveled, the lifting layer frame is controlled to ascend, when the first end of the lifting layer frame reaches the upper limit position, the control unit controls the first motor to stop rotating, when the second end of the lifting layer frame reaches the upper limit position, the control unit controls the second motor to stop rotating, and as the two traction ropes are respectively driven by different motors, the traction lengths of the two traction ropes are consistent when the different motors are respectively controlled to operate, so that the automatic leveling of the lifting layer frame is realized, and the purpose of saving maintenance cost is achieved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic perspective view of a refrigerator according to an embodiment of the present disclosure;

FIG. 2 is a schematic perspective view of a refrigerator according to an embodiment of the present disclosure;

FIG. 3 is a schematic view illustrating installation positions of a lifting shelf and a fixing shelf in a refrigerator according to an embodiment of the present application;

fig. 4 is a schematic view of installation positions of a lifting shelf, a first motor, a second motor, a first slide rail, a first roller pair, a second slide rail and a second roller pair in a storage chamber in a refrigerator according to an embodiment of the present application;

fig. 5 is a schematic connection diagram of a lifting shelf, a first motor, a second motor, a first slide rail, a first roller pair, a second slide rail and a second roller pair in a refrigerator according to an embodiment of the present application;

FIG. 6 is a view taken along line A of FIG. 5;

FIG. 7 is a schematic view illustrating a connection between a first slide rail and a first roller pair in a refrigerator according to an embodiment of the present disclosure;

FIG. 8 is a schematic perspective view of a first roller pair in a refrigerator according to an embodiment of the present disclosure;

FIG. 9 is a view from the direction B of FIG. 5;

FIG. 10 is a schematic view illustrating a connection between a second slide rail and a second roller pair in the refrigerator according to the embodiment of the present disclosure;

FIG. 11 is a schematic perspective view of a second roller set in a refrigerator according to an embodiment of the present disclosure;

FIG. 12 is a schematic view of a refrigerator according to an embodiment of the present invention with a lifting shelf at an upper limit position;

FIG. 13 is an enlarged view of a portion of FIG. 12 at I;

fig. 14 is a schematic view of the refrigerator according to the embodiment of the present application, in which the lifting shelf is located at a position other than the upper limit position.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

Fig. 1 and 2 are perspective structural views of a specific embodiment of a refrigerator according to the present application, where fig. 1 is a perspective structural view of a closed refrigerator door, and fig. 2 is a perspective structural view of an opened refrigerator door. Referring to fig. 1 and 2, the refrigerator according to the embodiment of the present application has an approximately rectangular parallelepiped shape. The appearance of the refrigerator is defined by a storage chamber 1 defining a storage space and a plurality of door bodies 2 arranged in the storage chamber 1, wherein each door body 2 comprises a door body outer shell 21 positioned at the outer side of the storage chamber 1, a door body inner container 22 positioned at the inner side of the lower storage chamber 1, an upper end cover 23, a lower end cover 24 and a heat insulating layer positioned among the door body outer shell 21, the door body inner container 22, the upper end cover 23 and the lower end cover 24; typically, the thermal insulation layer is filled with a foam material.

The storage chamber 1 is a box having an opening, and the storage chamber 1 is vertically partitioned into a lower freezing chamber 1B and an upper refrigerating chamber 1A. Each of the partitioned spaces may have an independent storage space. In detail, the freezing chamber 1B is defined at a lower side of the storage chamber 1 and may be selectively covered by a drawer-type freezing chamber door body 2B. The space defined above the freezing chamber 1B is partitioned into left and right sides to define the refrigerating chamber 1A, respectively. The refrigerating compartment 1A can be selectively opened or closed by a refrigerating compartment door body 2A pivotably mounted on the refrigerating compartment 1A.

Referring to fig. 2, the storage compartment 1 in the embodiment of the present application includes a storage drawer 110 located at a lower side, and the storage drawer 110 is two-layered and includes two narrower preservation drawers located at a lower layer and disposed side by side at left and right sides, and a wider preservation drawer located at upper sides of the two narrower preservation drawers and used for storing longer food materials. The storeroom 1 also comprises a layer frame positioned on the storage drawer 110, wherein the layer frame comprises a fixed layer frame 17 and a lifting layer frame 3, the fixed layer frame 17 is a layer frame which can not move up and down after being installed, usually, liner ribs are formed on the inner walls of two sides of the storeroom 1, and the fixed layer frame 17 is placed on the liner ribs. The lifting layer frame 3 is a layer frame which can be adjusted up and down after being installed, and particularly, the lifting layer frame 3 is connected in the storeroom 1 in a sliding mode along the vertical direction, so that the lifting layer frame 3 can stably move up and down, and friction resistance is small when the lifting layer frame moves up and down.

The relative position of the lifting shelf 3 and the fixed shelf 17 is not unique, the fixed shelf 17 can be positioned at the upper side, and the lifting shelf 3 can also be positioned at the upper side. Fig. 3 is a schematic view showing the installation positions of the lifting shelf 3 and the fixed shelf 17 in the refrigerator according to the embodiment of the present invention, and referring to fig. 3, in some embodiments of the present invention, in order to adjust the heights of at least the upper and lower floors at the same time, the fixed shelf 17 is located at the upper side, and the lifting shelf 3 is located at the second floor. In other embodiments, the lifting shelf 3 is located at the upper side, and the fixing shelf 17 is located at the lower side, so that when the overall height of the refrigerator is high and a user cannot store food materials on the shelf at the uppermost layer, the food materials can be stored in a manner that the lifting shelf 3 moves downwards, and the use by the user is facilitated.

In some embodiments, the lifting layer rack 3 is moved up and down by two motors driving two pulling ropes to pull two ends of the lifting layer rack 3. Referring to fig. 4 and 5, a first motor 6, a second motor 11, a first traction rope 8, a second traction rope 13, a first slide rail 101, a first roller pair 102, a second slide rail 151 and a second roller pair 152 are disposed in the storage compartment 1, the first roller pair 102 is disposed at a first end of the lifting layer frame 3, the second roller pair 152 is disposed at a second end of the lifting layer frame 3, the first motor 6 and the second motor 11 are disposed on a rear wall surface of the storage compartment 1, a first pulley 7 is disposed on an output shaft of the first motor 6, a second pulley 12 is disposed on an output shaft of the second motor 11, a first end of the first traction rope 8 is wound on the first pulley 7, a second end of the first traction rope 8 is connected to the first roller pair 102, a first end of the second traction rope 13 is wound on the second pulley 12, a second end of the second traction rope 13 is connected to the second roller pair 152, the first slide rail 101 and the second slide rail 151 are disposed on two opposite side walls of the storage compartment 1, first roller pair 102 is in rolling fit with first slide rail 101, second roller pair 152 is in rolling fit with second slide rail 151, first motor 6 and second motor 11 drive lifting layer frame 3 to slide up and down along first slide rail 101 and second slide rail 151 through first haulage rope 8 and second haulage rope 13, realize the purpose of automatic adjustment lifting layer frame 3's height, thereby convenience of customers deposits the edible material of co-altitude, improve the space utilization of refrigerator, in addition, adopt the structure realization rolling friction of slide rail and roller pair between lifting layer frame 3 and the lateral wall of storeroom 1, frictional resistance is little, wearing and tearing are little and the precision retentivity is good.

Specifically, referring to fig. 7 and 8, a first sliding slot 1011 penetrating up and down is disposed on the first sliding rail 101, the first roller pair 102 includes a first sliding frame 1021, at least one first roller 1025 is disposed on the first sliding frame 1021, and the first roller 1025 can roll along a sidewall of the first sliding slot 1011. Referring to fig. 10 and 11, a second sliding groove 1511 penetrating up and down is disposed on the second sliding rail 151, the second roller pair 152 includes a second sliding frame 1521, at least one second roller 1525 is disposed on the second sliding frame 1521, and the second roller 1525 can roll along a sidewall of the second sliding groove 1511.

In other embodiments, the lifting shelves 3 and the storage room 1 can slide relatively through slider sliding rails, and the slider sliding rails have simple structures, low cost and good stability.

It should be noted that the first motor 6 and the second motor 11 are not limited to be disposed in the storage chamber 1, and for example, the first motor 6 and the second motor 11 may also be disposed in a foam layer of the cabinet, and the output shafts of the first motor 6 and the second motor 11 only extend into the storage chamber 1, and the structure does not occupy the storage space of the storage chamber 1. Meanwhile, the first and

second slide rails

101 and 151 are not limited to being disposed at opposite sidewalls of the storage chamber 1, and the first and

second slide rails

101 and 151 may be disposed at a rear wall surface of the storage chamber 1.

In order to facilitate the user to control the lifting of the lifting shelves 3, referring to fig. 3, a shelf lifting control button 16 is provided on a sidewall of the storage room 1, and the shelf lifting control button 16 is used to control the forward rotation, the reverse rotation, or the stop of the first motor 6 and the second motor 11. The shelf lifting control button 16 comprises three buttons of a lifting button, a descending button and a stopping button, wherein the lifting button is positioned at the upper side and provided with an upward arrow mark, the stopping button is positioned in the middle and provided with a stopping mark, and the descending button is positioned at the lower side and provided with a downward arrow mark.

Referring to fig. 12 and 14, when the lifting shelf 3 needs to move down, the first motor 6 and the second motor 11 are controlled to rotate towards the first direction, the first traction rope 8 and the second traction rope 13 extend out, and the lifting shelf 3 moves down under the action of gravity; when the lifting shelf 3 needs to move upwards, the first motor 6 and the second motor 11 are controlled to rotate towards the second direction (the direction opposite to the first direction), the first traction rope 8 and the second traction rope 13 are gradually wound, and the lifting shelf 3 moves upwards.

Referring to fig. 4, in order to achieve the automatic leveling of the lifting shelf 3, the refrigerator according to some embodiments of the present application further includes a control unit, a first limiting member 18 for limiting an upper limit position of a first end of the lifting shelf 3 and a second limiting member 19 for limiting an upper limit position of a second end of the lifting shelf 3 are disposed in the storage chamber 1, and the first limiting member 18 and the second limiting member 19 are located on the same horizontal plane. When the first end of the lifting shelf 3 reaches the upper limit position, the control unit can control the first motor 6 to stop rotating; when the second end of the lifting shelf 3 reaches the upper limit position, the control unit can control the second motor 11 to stop rotating.

When the lifting shelf 3 needs to be leveled, the lifting shelf 3 is controlled to ascend, when the first end of the lifting shelf 3 reaches the upper limit position, the control unit controls the first motor 6 to stop rotating, when the second end of the lifting shelf 3 reaches the upper limit position, the control unit controls the second motor 11 to stop rotating, as the two traction ropes are respectively driven by different motors, and the first limiting part 18 and the second limiting part 19 are positioned on the same horizontal plane, the traction lengths of the two traction ropes can be consistent by respectively controlling the running time of the different motors, so that the automatic leveling of the lifting shelf 3 is realized, and the purpose of saving the maintenance cost is achieved.

In order to improve the detection accuracy, in some embodiments of the present application, the first motor 6 and the second motor 11 are controlled to stop rotating by determining whether the actual current values of the first motor 6 and the second motor 11 are greater than the preset current value, so that the traction lengths of the first traction rope 8 and the second traction rope 13 are consistent, and thus the two ends of the lifting layer frame 3 are automatically leveled. Some embodiments of the present application further comprise a detection unit for detecting an actual current value of the first motor 6 and an actual current value of the second motor 11; the control unit is configured to: and when the actual current value of the first motor 6 detected by the detection unit is larger than the preset current value, controlling the first motor 6 to stop rotating, and when the actual current value of the second motor 11 detected by the detection unit is larger than the preset current value, controlling the second motor 11 to stop rotating.

Specifically, when the first end of lift layer frame 3 was in last extreme position, first haulage rope 8 was taut, and simultaneously, first motor 6 was prevented by first haulage rope 8 and is rotated, the electric current increase of first motor 6, when the actual current value of first motor 6 that the control unit confirmed the detecting element and detected was greater than predetermined current value, the control unit control first motor 6 stall, and in the same way, second motor 11 and second haulage rope 13 also carry out the same action, because two haulage ropes are respectively by different motor drive, consequently, the actual current value of accessible control motor makes the length of pulling of two haulage ropes unanimous, thereby realize the automatic leveling of lift layer frame.

The detection unit has various implementation modes, and in some embodiments, the detection unit is a current sensor, and the current sensor has the advantages of high detection precision, convenience in use and the like. In other embodiments, the detection unit is an ammeter, which has the advantage of low cost.

Other embodiments of the present application control the first motor 6 and the second motor 11 to stop rotating by controlling the positions of the two ends of the lifting shelf 3, so as to automatically level the two ends of the lifting shelf 3. Specifically, a first end of the lifting shelf 3 may be provided with a first travel switch, a second end of the lifting shelf 3 may be provided with a second travel switch, when the first end of the lifting shelf 3 is at the upper limit position, the first travel switch contacts with the first limit part 18, the first travel switch is triggered, the first motor 6 stops rotating, when the second end of the lifting shelf 3 is at the upper limit position, the second travel switch contacts with the second limit part 19, the second travel switch is triggered, the second motor 11 stops rotating, because the first limit part 18 and the second limit part 19 are located on the same horizontal plane, the first traction rope 8 and the second traction rope 13 are adjusted to the same traction length, and the two ends of the lifting shelf 3 are automatically leveled.

The first motor 6 and the second motor 11 may be disposed at various positions, referring to fig. 4, in some embodiments, the first motor 6 and the second motor 11 are disposed at the center of the rear wall surface of the storage chamber 1 in the left and right directions, so that the first motor 6 and the second motor 11 are disposed adjacent to each other and are spaced apart from each other, and thus, both can be fixed to the rear wall surface of the storage chamber 1 through the same connecting member, and the installation is more convenient.

When adopting the embodiment in which the first motor 6 and the second motor 11 are both disposed at the center of the left and right direction of the rear wall surface of the storage room 1, in order to change the drawing direction of the first drawing rope 8 and the second drawing rope 13, referring to fig. 4, the third pulley 9 and the fourth pulley 14 are disposed in both sides of the rear wall surface of the storage room 1, the second end of the first drawing rope 8 extends in the transverse direction, extends downward after bypassing the third pulley 9, and is connected to the first end of the lifting layer frame 3, and the second end of the second drawing rope 13 extends in the transverse direction, extends downward after bypassing the fourth pulley 14, and is connected to the second end of the lifting layer frame 3. The structure can also lead the lengths of the first traction rope 8 and the second traction rope 13 to be consistent, thereby improving the modularization degree of the production process.

In order to facilitate the dismounting of the lifting shelf 3, referring to fig. 6, the bottom of the first end of the lifting shelf 3 is fixedly connected with a first support frame 4, and the first support frame 4 is detachably connected with a first sliding frame 1021. Referring to fig. 9, the bottom of the second end of the lifting shelf 3 is fixedly connected with a second support frame 5, and the second support frame 5 is detachably connected with a second sliding frame 1521. This structure is convenient for the user to dismantle the washing to lift layer frame 3.

The first support frame 4 and the first carriage 1021 are not connected exclusively, nor are the second support frame 5 and the second carriage 1521 connected exclusively. In some embodiments, referring to fig. 7, the first sliding frame 1021 includes a first connection plate 10211 and a second connection plate 10212 perpendicular to the first connection plate 10211, the second connection plate 10212 is located at the front side of the first sliding rail 101, a first hanging hole 1023 and a first limiting groove 1024 are arranged on the second connection plate 10212 from top to bottom, referring to fig. 6, a first hook 41 and a first limiting convex part 42 are arranged at the rear side of the first support frame 4, the first hook 41 is hung at the first hanging hole 1023, the first hanging hole 1023 can limit relative displacement of the first support frame 4 and the first sliding frame 1021 in the front-rear direction and the left-right direction, the first limiting convex part 42 is in fit and snap-fit with the first limiting groove 1024, and the first limiting groove 1024 can limit relative displacement of the first support frame 4 and the first sliding frame 1021 in the up-down direction.

Referring to fig. 10, the second sliding frame 1521 includes a fourth connecting plate 15212 disposed between the third connecting plate 15211 and the third connecting plate 15211, the fourth connecting plate 15212 is disposed on the front side of the second sliding rail 151, a second hanging hole 1523 and a second limiting groove 1524 are disposed on the fourth connecting plate 15212 from top to bottom, referring to fig. 9, a second hook 51 and a second limiting convex portion 52 are disposed on the rear side of the second supporting frame 5, the second hook 51 is hung on the second hanging hole 1523, the second hook 51 can limit the relative displacement of the second supporting frame 5 and the second sliding frame 1521 in the front-back direction and the left-right direction, the second limiting convex portion 52 is engaged with the second limiting groove 1524, and the second limiting groove 1524 can limit the relative displacement of the second supporting frame 5 and the second sliding frame 1521 in the up-down direction.

When the lifting shelf 3 is installed, the front end of the lifting shelf 3 is lifted up, the first hook 41 is hung at the first hanging hole 1023, the second hook 51 is hung at the second hanging hole 1523, the front end of the lifting shelf 3 is pressed down, the first limit convex part 42 is clamped into the first limit groove 1024, the second limit convex part 52 is clamped into the second limit groove 1524, and the hook is high in mode reliability and convenient to operate.

In other embodiments, the first support frame 4 and the first sliding frame 1021, and the second support frame 5 and the second sliding frame 1521 can be connected through bolts, so that the structure is convenient to process and low in cost.

The connection mode of the first sliding frame 1021 and the first traction rope 8 is not unique, and the connection mode of the second sliding frame 1521 and the second traction rope 13 is not unique, in some embodiments, referring to fig. 7 and 8, a first traction rope fixing member 1026 is arranged on the upper side of the first sliding frame 1021, the first traction rope fixing member 1026 is fixedly connected to a first connecting plate 10211 of the first sliding frame 1021, referring to fig. 10 and 11, a second traction rope fixing member 1526 is arranged on the upper side of the second sliding frame 1521, the second traction rope fixing member 1526 is fixedly connected to a third connecting plate 15211 of the second sliding frame 1521, the first traction rope fixing member 1026 and the first connecting plate 10211 are independent to support the first end of the lifting layer frame 3 and the first traction rope 8 respectively, the second traction rope fixing member 6 and the third connecting plate 15211 are independent to support the second end of the lifting layer frame 3 and the second traction rope 13 respectively, and the support performance is easy to guarantee, meanwhile, the manufacture and the assembly are easy.

In other embodiments, the first connection plate 10211 of the first carriage 1021 has a first connection hole formed thereon, and the first traction rope 8 is directly connected to the first connection hole. A second connecting hole is formed in the upper side of the third connecting plate 15211 of the second sliding frame 1521, and the second traction rope 13 is directly connected to the second connecting hole. The structure of the implementation mode is simple, and the processing cost can be saved.

In various embodiments, when the first carriage 1021 includes a first connection plate 10211 and a second connection plate 10212 perpendicular to the first connection plate 10211, and the second carriage 1521 includes a third connection plate 15211 and a fourth connection plate 15212 perpendicular to the third connection plate 15211, referring to fig. 13, in some embodiments, the first limiting member 18 may include a first limiting protrusion 181 formed on a side wall surface of the storage compartment 1 and a third limiting protrusion 182 formed on a rear wall surface of the storage compartment 1, and when the first end of the lifting shelf 3 is at the upper limit position, the top surface of the second connection plate 10212 abuts against the first limiting protrusion 181, and simultaneously, the top surface of the first connection plate 10211 abuts against a portion of the third limiting protrusion 182, and the acting force between the first carriage 1021 and the first limiting member 18 is formed by the first connection plate 10211, the second limiting protrusion 181, the second limiting protrusion 182, and the third limiting protrusion 182, and the acting force between the first carriage 1021 and the first limiting member 18 are controlled by the first connection plate 102, The second connecting plate 10212, the first limiting protrusion 181 and the third limiting protrusion 182 share the bearing, the limiting is more reliable, and each limiting protrusion is formed by plastic suction of a die, so that the limiting structure is stable in size, cannot be influenced by assembly errors, and is high in leveling precision.

The second limiting member 19 may include a second limiting protrusion (not shown) formed on a side wall surface of the storage compartment and a fourth limiting protrusion (not shown) formed on a rear wall surface of the storage compartment 1, when the second end of the lifting shelf 3 is at the upper limit position, the top surface of the fourth connecting plate 15212 abuts against the second limiting protrusion, and meanwhile, the top surface of the third connecting plate 15211 abuts against a part of the fourth limiting protrusion, and similarly, the acting force between the second sliding frame 1521 and the second limiting member 19 is shared by the third connecting plate 15211, the fourth connecting plate 15212, the second limiting protrusion and the fourth limiting protrusion, so that the limiting is more reliable. In other embodiments, the first limiting member 18 may only include the first limiting protrusion 181, the second limiting member 19 may only include the second limiting protrusion, when the first end of the lifting shelf 3 is at the upper limit position, the top surface of the second connecting plate 10212 abuts against the first limiting protrusion 181, and when the second end of the lifting shelf 3 is at the upper limit position, the top surface of the fourth connecting plate 15212 abuts against the second limiting protrusion.

For more attractive appearance, referring to fig. 3, in some embodiments, an air duct decorative plate 210 for shielding the first slide rail 101 and the second slide rail 151 is disposed in the storage compartment 1, an installation cavity is formed between the air duct decorative plate 210 and a rear wall surface of the storage compartment 1, the first motor 6, the second motor 11, the first slide rail 101, and the second slide rail 151 are all located in the installation cavity, a first elongated opening 2101 and a second elongated opening (not shown) extending up and down are disposed on the air duct decorative plate 210, a rear side of the first support frame 4 passes through the first elongated opening 2101 of the first support frame 4 and then is connected to the first carriage 1021, and a second support frame 5 passes through the second elongated opening and then is connected to the second carriage 1521.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A refrigerator, comprising:

a storage chamber;

a door for opening or closing the storage chamber; characterized in that, the refrigerator still includes:

the lifting shelf is connected in the storage chamber in a sliding manner along the vertical direction;

the device comprises a first motor and a second motor, wherein a first pulley is arranged on an output shaft of the first motor, and a second pulley is arranged on an output shaft of the second motor;

the first end of the first traction rope is wound on the first pulley, and the second end of the first traction rope is connected with the first end of the lifting layer frame; a first end of the second traction rope is wound on the second pulley, and a second end of the second traction rope is connected with a second end of the lifting layer frame;

the first limiting piece is used for limiting the upper limit position of the first end of the lifting shelf; the second limiting piece is used for limiting the upper limit position of the second end of the lifting shelf; the first limiting part and the second limiting part are positioned on the same horizontal plane;

the control unit can control the first motor to stop rotating when the first end of the lifting shelf reaches the upper limit position;

when the second end of the lifting shelf reaches the upper limit position, the control unit can control the second motor to stop rotating.

2. The refrigerator according to claim 1, further comprising a detection unit for detecting an actual current value of the first motor and an actual current value of the second motor;

the control unit is configured to:

when the actual current value of the first motor detected by the detection unit is larger than a preset current value, controlling the first motor to stop rotating;

and when the actual current value of the second motor detected by the detection unit is larger than the preset current value, controlling the second motor to stop rotating.

3. The refrigerator according to claim 2,

the first motor and the second motor are both arranged at the center position of the left and right direction of the rear wall surface of the storage chamber;

be equipped with third pulley and fourth pulley in the both sides of the back wall of storeroom, the second end of first haulage rope is along transversely extending and is walked around the third pulley is to the downward extension connection the first end of lift layer frame, the second end of second haulage rope is along transversely extending and is walked around the fourth pulley is to the downward extension connection the second end of lift layer frame.

4. The refrigerator according to any one of claims 1 to 3,

the two side walls of the storage chamber are respectively provided with a first slide rail and a second slide rail, the two ends of the lifting layer frame are respectively provided with a first roller pair and a second roller pair, the first roller pair is matched with the first slide rail in a rolling manner, and the second roller pair is matched with the second slide rail in a rolling manner.

5. The refrigerator according to claim 4,

the first roller pair comprises a first sliding frame and at least one first roller arranged on the first sliding frame, the bottom of the first end of the lifting layer frame is fixedly connected with a first support frame, the first support frame is detachably connected with the first sliding frame, and the first roller is in rolling fit with the first sliding rail;

the second roller pair comprises a second sliding frame and at least one second roller arranged on the second sliding frame, the bottom of the second end of the lifting layer frame is fixedly connected with a second support frame, the second support frame is detachably connected with the second sliding frame, and the second roller is in rolling fit with the second sliding rail.

6. The refrigerator according to claim 5,

a first hanging hole and a first limiting groove are formed in the first sliding frame, the first limiting groove is located below the first hanging hole, a first hook and a first limiting convex part are arranged on the rear side of the first support frame, the first hook is hung at the first hanging hole, and the first limiting convex part is matched and clamped with the first limiting groove;

the second carriage is provided with a second hanging hole and a second limiting groove, the second limiting groove is located below the second hanging hole, the rear side of the second support frame is provided with a second hook and a second limiting convex portion, the second hook is hung and arranged at the second hanging hole, and the second limiting convex portion is matched with the second limiting groove in a clamped mode.

7. The refrigerator according to claim 6,

the first sliding frame comprises a first connecting plate parallel to the side wall surface of the first sliding rail and a second connecting plate vertical to the first connecting plate;

the first limiting part comprises a first limiting bulge formed on the side wall surface of the storage room, and when the first end of the lifting shelf is positioned at the upper limit position, the top surface of the second connecting plate is abutted against the first limiting bulge;

the second sliding frame comprises a third connecting plate parallel to the side wall surface of the second sliding rail and a fourth connecting plate vertical to the third connecting plate;

the second limiting part comprises a second limiting bulge formed on the side wall surface of the storage room, and when the second end of the lifting shelf is at the upper limit position, the top surface of the fourth connecting plate abuts against the second limiting bulge.

8. The refrigerator according to claim 7,

the first limiting part also comprises a third limiting bulge formed on the rear wall surface of the storage chamber; when the first end of the lifting shelf is at the upper limit position, the top surface of the first connecting plate is abutted against the third limiting bulge;

the second limiting part also comprises a fourth limiting bulge formed on the rear wall surface of the storage chamber; when the second end of the lifting shelf is at the upper limit position, the top surface of the third connecting plate is propped against the fourth limiting bulge.

9. The refrigerator according to claim 8, wherein an air duct decoration board is disposed in the storage compartment for shielding the first slide rail and the second slide rail, a mounting cavity is formed between the air duct decoration board and a rear wall surface of the storage compartment, and the first motor, the second motor, the first slide rail and the second slide rail are all located in the mounting cavity; the air duct decorative plate is provided with a first strip-shaped opening and a second strip-shaped opening which extend up and down, and the rear side of the first support frame penetrates through the first strip-shaped opening and is connected with the first sliding frame; and the second support frame penetrates through the second elongated opening and is connected with the second sliding frame.

10. The refrigerator according to claim 2 or 3, wherein the detection unit is a current sensor.