CN112944773B

CN112944773B - Refrigerator with adjustable layer plate height

Info

Publication number: CN112944773B
Application number: CN201911266201.5A
Authority: CN
Inventors: 王仁华; 申乃雨; 陈红欣
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Refrigerator Co Ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2022-06-17
Anticipated expiration: 2039-12-11
Also published as: CN112944773A

Abstract

The invention discloses a refrigerator with an adjustable layer plate height, relates to the technical field of refrigerators, and aims to solve the problem that a motor cannot be timely turned off at a limit position in the lifting process of an automatic lifting layer plate in the prior art. The refrigerator includes the box, the inside storeroom that is equipped with of box, be equipped with the lift plywood in the storeroom, driving motor, a transmission shaft for exporting the driving motor moment of torsion, the lift subassembly with the transmission shaft is connected, a travel switch for controlling driving motor opens and stops, travel switch includes the trigger end, when the trigger end is triggered, travel switch control driving motor stall, be equipped with the trigger between transmission shaft and the trigger end, be equipped with cooperation portion between trigger and the transmission shaft, accessible cooperation portion makes the trigger remove when the transmission shaft rotates preset angle, the trigger end is located the removal orbit of trigger. The refrigerator is used for storing food materials.

Description

Refrigerator with adjustable layer plate height

Technical Field

The invention relates to the technical field of refrigerators, in particular to a refrigerator with adjustable layer plate height.

Background

With the increasing improvement of the quality of life, more and more multi-door refrigerators with the characteristics of large volume, multiple functions, classified storage and the like are provided, and the intelligent requirement degree of the refrigerator products by people is also higher and higher. The plywood of current refrigerator product is the unchangeable plywood of fixed position, and shaping courage muscle on the inside relative lateral wall of refrigerator storeroom usually, the plywood place on courage muscle can. In order to make the height-adjustable of plywood, generally reserve the several courage muscle on the inner wall of storeroom to the user can place the plywood on the courage muscle of co-altitude not, changes the height of plywood, but, because the position of courage muscle can not change, so the clearance size between the plywood can not be adjusted at will according to the size of depositing article, causes the inside space utilization of refrigerator low, influences user experience. In addition, in recent years, the demand for large-capacity refrigerators has been gradually increased, and the height of the refrigerators has been increased, so that it is difficult to access the articles stored on the uppermost layer plate, which has been a problem for users.

Based on above-mentioned problem, but some plywood height automatically regulated's refrigerator has appeared on the market, as shown in fig. 1, this refrigerator includes plywood 001 and the ball screw subassembly of being connected with plywood 001, the ball screw subassembly includes supporting ball screw 002 and ball nut 003 and fixes the drive gear 004 in ball screw 002 bottom, drive gear 004 is connected with motor 005 and is driven rotatoryly by motor 005, the both ends of plywood 001 respectively are fixed with a mount pad 006, mount pad 006 is fixed with plywood 001, be equipped with two through-holes on the mount pad 006: first through-hole 007 and second through-hole 008, ball nut 003 set up in first through-hole 007 thereby fixed with mount pad 006, wear to be equipped with guide bar 009 in the second through-hole 008, play the effect of balanced support and direction to mount pad 006, effectively prevent mount pad 006 and plywood 001 slope, be provided with fixing base 010 respectively on the top and the bottom of ball screw 002 and guide bar 009, the lateral wall fixed connection of this fixing base 010 and storeroom. When the ball screw 002 is rotated by the motor 005, the ball nut 003 ascends or descends on the ball screw 002, turning the rotational force into an axial force, thereby driving the mount 006 and the laminate 001 to ascend or descend.

Above-mentioned scheme passes through the ball screw subassembly and drives the plywood and reciprocates, but when using, when plywood 001 moved to peak or minimum, needed the user in time to close motor 005, could stop motion, if do not in time stop, ball screw 002 continues to rotate, then can cause to take place strong friction between ball nut 003 and the spacing part of top or bottom, leads to the transmission part to damage.

Disclosure of Invention

The embodiment of the invention provides a refrigerator with an adjustable layer plate height, which can limit the lifting stroke of the layer plate, and can timely turn off a motor when the layer plate moves to the highest point or the lowest point, so that the damage of a transmission assembly caused by the continuous operation of the motor is avoided.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

the embodiment of the invention provides a refrigerator with an adjustable layer plate height, which comprises a refrigerator body, wherein a storage chamber and a lifting layer plate are arranged in the refrigerator body; a driving motor disposed on an inner wall of the storage chamber; a transmission shaft for outputting a torque of the driving motor; the lifting assembly is connected with the transmission shaft and converts the rotating torque output by the transmission shaft into a force for driving the lifting laminated plate to move up and down; the travel switch is used for controlling the starting and stopping of the driving motor and comprises a trigger end, and when the trigger end is triggered, the travel switch controls the driving motor to stop running; the trigger piece, the trigger piece be located the transmission shaft with between the trigger end, the trigger piece with be equipped with cooperation portion between the transmission shaft, the transmission shaft accessible when rotating preset angle the cooperation portion makes the trigger piece removes, the trigger end is located the removal orbit of trigger piece.

The refrigerator with the adjustable layer plate height provided by the embodiment of the invention has the advantages that the travel switch is arranged in the storage chamber, so the travel switch can control the lifting travel of the lifting layer plate, when a user uses the refrigerator, the driving motor is controlled to operate, the driving motor drives the transmission shaft to rotate and drives the lifting assembly to move, the lifting assembly converts the rotating torque of the transmission shaft into the force for driving the lifting layer plate to move up and down, when the transmission shaft rotates for a preset angle, the trigger part moves through the matching part, and because the trigger part of the travel switch is positioned on the moving track of the trigger part, the trigger part can be triggered when the trigger part moves, so the travel switch controls the driving motor to stop operating, at the moment, the transmission shaft stops rotating, the lifting assembly also stops moving, the lifting layer plate is controlled to stop moving, and when the lifting assembly runs to the limit position, the user cannot timely turn off the driving motor, the driving motor is enabled to continue to operate, and the lifting assembly is damaged.

Drawings

FIG. 1 is a schematic view of an overall structure of a lifting mechanism of a refrigerator capable of automatically adjusting the height of a layer plate in the prior art;

fig. 2 is a schematic view of an overall structure of a refrigerator according to an embodiment of the present invention;

FIG. 3 is a schematic view of a refrigerator liner structure according to an embodiment of the present invention;

FIG. 4 is a schematic view of a driving mechanism provided in an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a travel switch, a slider, a sliding ring and a transmission shaft according to an embodiment of the present invention (a protrusion enters a groove);

fig. 6 is a schematic structural diagram of a travel switch, a slider, a sliding ring, and a transmission shaft according to an embodiment of the present invention (the protrusion does not enter the groove);

FIG. 7 is a schematic structural diagram of a travel switch, a slider, a sliding ring, a transmission shaft and a driving gear according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a transmission shaft and a driving gear according to an embodiment of the present invention;

fig. 9 is a schematic view of an internal structure of the mounting box according to the embodiment of the present invention;

FIG. 10 is a front view of the mounting box and internal drive mechanism provided by an embodiment of the present invention (drive shaft and drive gear not shown);

FIG. 11 is a front view of the mounting box and internal drive mechanism provided by an embodiment of the present invention;

FIG. 12 is a rear view of the mounting box and internal drive mechanism provided by an embodiment of the present invention;

FIG. 13 is a schematic view of an overall structure of a lifting assembly according to an embodiment of the present invention;

fig. 14 is a schematic structural view of the reel and the reel cover according to the embodiment of the present invention.

Reference numerals: 100. a box body; 101. a storage chamber; 101A, a freezing chamber; 101B, a refrigerating chamber; 102. an inner container; 110. a storage drawer; 120. fixing the laminate; 130. lifting the laminate; 140. a decorative plate; 150. an air duct cover plate; 200. a door body; 200A; a freezing chamber door; 200B, a refrigerating chamber door; 300. mounting a box; 310. reinforcing iron for the motor; 320. a drive motor; 321. a control switch; 330. a travel switch; 331. a spring plate; 340. a drive shaft; 341. a groove; 341A, a first groove; 341B, a second groove; 342. a drive gear; 3421. a tooth-missing segment; 350. a slip ring; 351. a slider; 3511. a strip-shaped through hole; 352. a protrusion; 360. a slider mounting base; 361. a guide post; 362. a travel switch mounting base; 363. a transmission shaft mounting seat; 364. a transmission gear mounting base; 365. a drive motor mounting base; 370. a drive gear set; 410. a slide rail; 411. slide rail reinforcing iron; 420. a slider; 430. a hauling rope; 440. a wire wheel; 441. a wire wheel cover; 450. and a fixed pulley.

Detailed Description

A refrigerator with an adjustable shelf height according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the description of the present invention, 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 of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

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 invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should 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; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

Fig. 2 is a perspective view of an embodiment of a refrigerator according to the present invention, and as shown in fig. 2, the refrigerator according to an embodiment of the present invention has an approximately rectangular parallelepiped shape. The external appearance of the refrigerator is defined by a storage chamber 101 defining a storage space and a plurality of door bodies 200 provided in the storage chamber 101. The storage chamber 101 is a cabinet 100 having an opening, the storage chamber 101 is vertically partitioned into a lower freezer compartment 101A and an upper refrigerator compartment 101B, and each of the partitioned spaces may have an independent storage space.

In detail, the freezing chamber 101A is defined at a lower side of the storage chamber 101 and may be selectively covered by a drawer type freezing chamber door 200A. The space defined above the freezing chamber 101A is partitioned into left and right sides to define the refrigerating chamber 101B, respectively. The refrigerating compartment 101B is selectively opened or closed by a refrigerating compartment door 200B pivotably mounted on the refrigerating compartment 101B.

The storage chamber 101 provided by the embodiment of the present invention includes a storage drawer 110 located at a lower side, as shown in fig. 3, the storage drawer 110 is provided with two layers, the storage drawer 110 disposed at a lower layer is divided into a left part and a right part, which are respectively a dry preservation drawer and a wet preservation drawer, and the storage drawer 110 disposed at an upper layer is used for storing some food materials with a longer length or a larger volume; the storage chamber 101 further includes a laminate disposed above the storage drawer 110, the laminate includes a fixing laminate 120 and a lifting laminate 130, the fixing laminate 120 is disposed on the inner ribs, the lifting laminate 130 is driven by a driving mechanism, and the driving mechanism and the lifting laminate 130 are connected through a lifting assembly, which can convert a rotational force output by the driving mechanism into an axial force moving up and down.

Specifically, the positions of the lifting layer plate 130 and the fixing layer plate 120 are not unique, the lifting layer plate 130 can be disposed above the fixing layer plate 120, and the fixing layer plate 120 can also be disposed above the lifting layer plate 130, preferably, in the embodiment of the present invention, as shown in fig. 2, the lifting layer plate 130 is disposed above, and in use, for a refrigerator with a higher overall height, the layer plate can be lowered to access the food material using the layer plate at the uppermost layer of the storage chamber 101, which is convenient for a user to use.

In another embodiment of the present invention, only a plurality of lifting/lowering shelves 130 may be disposed in the storage chamber 101, and no fixed shelf 120 is disposed, and a corresponding driving mechanism and a corresponding lifting/lowering assembly are disposed for each lifting/lowering shelf 130, so as to control each lifting/lowering shelf 130 to lift or lower.

As shown in fig. 3 and 4, the driving mechanism of the refrigerator according to the embodiment of the present invention includes a driving motor 320 disposed on an inner wall of the storage chamber 101, a transmission shaft 340 for outputting a torque of the driving motor 320, and a travel switch 330 for controlling the driving motor 320 to start and stop, where the travel switch 330 includes a trigger end, when the trigger end is triggered, the travel switch 330 controls the driving motor 320 to stop operating, a trigger is further disposed between the transmission shaft 340 and the trigger end, a matching portion is disposed between the trigger 340 and the transmission shaft 340, when the transmission shaft rotates by a preset angle, the trigger can be moved by the matching portion, and the trigger end is located on a moving track of the trigger.

In the refrigerator with adjustable shelf board height provided by the embodiment of the invention, because the travel switch 330 is arranged in the storage chamber, the travel switch 330 can control the lifting travel of the lifting shelf board 130, when a user uses the refrigerator, the driving motor 320 is started, the driving motor 320 drives the transmission shaft 340 to rotate, the transmission shaft 340 drives the lifting assembly to move, the lifting assembly converts the rotating torque output by the transmission shaft 340 into an axial force for driving the lifting shelf board 130 to move up and down, so that the lifting adjustment of the lifting shelf board 130 is completed, when the transmission shaft rotates by a preset angle, the trigger moves through the matching part, because the travel switch 330 is positioned on the moving track of the trigger, the trigger can be triggered when the trigger moves, the travel switch 330 controls the driving motor 320 to stop running, at the moment, the transmission shaft 340 stops rotating, and the lifting assembly also stops moving, thereby control lift plywood 130 and stop upwards or move down, when preventing that the lift subassembly from moving to extreme position, the user fails in time to close driving motor 320, makes driving motor 320 continue the operation, leads to the condition emergence of lift subassembly damage.

Specifically, the rotation of the transmission shaft 340 by the preset angle refers to a rotation angle from a start point to an end point of the rotation of the transmission shaft 340, and when the transmission shaft 340 rotates forward by the preset angle and rotates backward by the preset angle, the rotation corresponds to a highest point and a lowest point of the up-and-down movement of the lifting layer plate 130, respectively, when the lifting layer plate 130 moves to the highest point or the lowest point, that is, the transmission shaft 340 rotates by the preset angle, at this time, the trigger member can move and trigger the trigger end, so that the travel switch 330 controls the driving motor 320 to be turned off, thereby ensuring that the lifting layer plate 130 can stop ascending or stopping descending in time, and preventing damage to the lifting assembly.

In order to facilitate the user to control the lifting of the lifting layer board 130, as shown in fig. 2, a control switch 321 for controlling the lifting of the lifting layer board 130 is provided on the inner wall of the storage chamber 101, and the control switch 321 is used for controlling the driving motor 320 to rotate forward, backward or stop.

The control switch 321 provided in the embodiment of the present invention may be provided with three buttons, which are an ascending button, a descending button and a stopping button, respectively, where the ascending button is provided with an upward arrow mark, the descending button is provided with a downward arrow mark, and the stopping button is provided with a stopping mark; two buttons, an up/stop button for controlling the lifting/lowering of the lifting/lowering plate 130 to be raised or stopped and a down/stop button for controlling the lowering or stopping of the lifting/lowering plate 130 may be provided.

The two travel switches 330 provided in the embodiment of the present invention may be provided, one travel switch 330 is triggered when the lifting layer 130 is lifted to the highest point, and the other travel switch 330 is triggered when the lifting layer 130 is lowered to the lowest point; a travel switch 330 may also be provided, and the travel switch 330 is triggered to turn off the driving motor 320 when the lifting layer 130 rises to the highest point or falls to the lowest point, and in the embodiment of the present invention, a travel switch 330 is preferably provided, and the number of components and the cost can be reduced by providing a travel switch 330.

As shown in fig. 5, the triggering member provided in the embodiment of the present invention includes a sliding ring 350 sleeved on the transmission shaft 340, a sliding block 351 is fixedly connected to an outer wall of the sliding ring 350, the matching portion is disposed between the transmission shaft 340 and the sliding ring 350, when the transmission shaft 340 rotates by a preset angle, the sliding ring drives the sliding block 351 to slide through the matching portion, and the sliding block 351 triggers the triggering end. The sliding ring 350 is sleeved on the transmission shaft 340, so that the situation that the trigger end cannot be triggered due to the fact that the sliding block 351 deviates from a moving track in the sliding process can be prevented.

As shown in fig. 5 and 6, the fitting portion provided in the embodiment of the present invention includes a protrusion 352 disposed on an inner wall of the sliding ring 350, and a groove 341 provided on a side wall of the driving shaft 340, the protrusion 352 being provided on a moving track of the slider 351, and the projection 352 is disposed between the slider 351 and the transmission shaft 340, the triggering end is a spring plate 331, as shown in fig. 5, the slider 351 is in pressing contact with the spring plate 331, when the transmission shaft 340 rotates a predetermined angle, the transmission shaft 340 drives the groove 341 to rotate to a position opposite to the protrusion 352, the elastic force of the elastic pieces 331 makes the slider 351 and the sliding ring 350 slide in the radial direction of the transmission shaft 340, and the protrusion 352 enters the groove 341, the spring plate 331 bounces, so that the travel switch 330 is triggered. When the lifting layer plate 130 is moved up and down, the protrusion 352 does not enter the groove 341, as shown in fig. 6, at this time, the protrusion 352 abuts against the sidewall of the transmission shaft 340, so the slider 351 presses the elastic piece 331, the elastic piece 331 presses the travel switch 330, the travel switch 330 is not triggered, when the lifting layer plate 130 is raised to the highest point or lowered to the lowest point, namely, the transmission shaft 340 rotates by a preset angle, at this time, the transmission shaft 340 rotates to a position where the protrusion 352 corresponds to the groove 341, at this time, the protrusion 352 does not contact with the sidewall of the transmission shaft 340, the pressure applied to the elastic piece 331 disappears, the elastic piece 331 bounces, the restoring force thereof enables the slider 351 to move towards the transmission shaft 340, so that the protrusion 352 enters the groove 341, at this time, the elastic piece 331 is released, the travel switch 330 is triggered, the travel switch 330 controls the driving motor 320 to stop operation, so that the lifting assembly stops operating, thereby realizing the protection of the whole mechanism by the travel switch 330.

It should be noted that the rotation of the transmission shaft 340 by the preset angle refers to a rotation angle from a start point to an end point of the rotation of the transmission shaft 340, and when the transmission shaft 340 rotates forward by the preset angle and rotates backward by the preset angle, the rotation angle corresponds to a highest point and a lowest point of the up-and-down movement of the lifting layer 130, at this time, the groove 341 on the transmission shaft 340 is located at a position opposite to the protrusion 352, and at this position, the pressure applied to the elastic sheet 331 disappears, the elastic sheet 331 rebounds, so that the travel switch 330 is triggered, and the elastic force of the elastic sheet 331 pushes the slider 351 and the sliding ring 350 to move, and meanwhile, the protrusion 352 enters the groove 341.

Preferably, two grooves 341 may be disposed on the side wall of the transmission shaft 340, as shown in fig. 7 and fig. 8, which are a first groove 341A and a second groove 341B, respectively, the driving motor 320 drives the transmission shaft 340 to rotate forward until the protrusion 352 enters the first groove 341A, and the driving motor 320 drives the transmission shaft 340 to rotate backward until the protrusion 352 enters the second groove 341B, so that the travel switch 330 is triggered. When the lifting laminate 130 is used, in order to prevent misoperation, for example, when a user operates the lifting laminate 130 to ascend, the driving motor 320 rotates positively, when the lifting laminate 130 ascends to the highest point, the protrusion 352 enters the groove 341, if the user continues to press the ascending button due to misoperation, the driving motor 320 continues to rotate positively, and because the lifting laminate 130 is already at the highest point, the lifting assembly continues to drive the lifting laminate 130 to ascend, parts in the lifting assembly can be damaged, and the device is damaged. Therefore, in the embodiment of the present invention, two grooves 341 are provided, which are a first groove 341A and a second groove 341B, respectively, when the driving motor 320 rotates forward, the lifting layer 130 rises, when the lifting layer 130 rises to the highest point, the protrusion 352 enters the first groove 341A, the travel switch 330 cuts off the circuit, the driving motor 320 stops running, if the user operates by mistake, the driving motor 320 continues to rotate forward, the protrusion 352 will come out of the first groove 341A and enter the second groove 341B, at this time, the travel switch 330 is triggered again, so that the driving motor 320 is turned off again, thereby reminding the user of an error in operation, and in time, preventing the lifting component or other components from being damaged due to misoperation.

Preferably, the driving mechanism further includes a mounting box 300, the mounting box 300 is disposed on an inner wall of the storage chamber 101, as shown in fig. 9 and 10, the driving motor 320, the travel switch 330, the sliding ring 350, and the slider 351 are disposed in the mounting box 300, and as shown in fig. 11 and 12, one end of the transmission shaft 340 extending out of the mounting box 300 is connected to the lifting assembly. The whole driving mechanism is integrated in the mounting box 300, so that the whole volume of the driving mechanism can be reduced, and the mounting box is connected with the inner wall of the storage chamber 101 only, so that the mounting is more convenient.

A slider mounting seat 360 is arranged in the mounting box 300 provided in the embodiment of the present invention, as shown in fig. 9, a guide post 361 is arranged on the slider mounting seat 360, as shown in fig. 7, a strip-shaped through hole 3511 is formed on the slider 351, as shown in fig. 10, the guide post 361 extends into the strip-shaped through hole 3511, and the slider 351 slides along the length direction of the strip-shaped through hole 3511. The sliding direction of the slider 351 can be defined by the mutual matching of the guide column 361 on the slider mounting seat 360 and the strip-shaped through hole 3511 formed on the slider 351, and when the transmission shaft 340 rotates to a set position, the slider 351 slides and the protrusion 352 enters the groove 341.

In addition, as shown in fig. 9 and 10, a travel switch mounting seat 362, a transmission shaft mounting seat 363, a plurality of transmission gear mounting seats 364 for mounting the transmission gear set 370, and a driving motor mounting seat 365 are further provided in the mounting box 300, and in the embodiment of the present invention, the driving motor 320, the transmission gear set 370, the driving gear 342, the travel switch 330, the slider 351, and other components are integrated in the mounting box 300 through reasonable layout to form a driving mechanism, so that the driving mechanism has a small overall volume, occupies a small space in the storage chamber 101, and increases the effective use space in the storage chamber 101.

Furthermore, the mounting box 300 can be divided into an upper shell and a lower shell, and the upper shell and the lower shell are mutually clamped and internally communicated, so that the mounting box is convenient to disassemble and maintain and replace the components inside the mounting box 300.

Since the condition that the travel switch 330 is disabled, for example, a circuit of the travel switch 330 is disconnected, may occur during a use process of a user, in order to avoid a situation that the lifting stroke of the lifting layer 130 cannot be controlled when the travel switch 330 is disabled, and the lifting assembly, the driving mechanism, and other components are damaged, the driving gear 342 is fixedly connected to the driving shaft 340 according to an embodiment of the present invention, as shown in fig. 11, the driving gear 342 is engaged with the transmission gear set 370, the transmission gear set 370 is connected to the output end of the driving motor 320, as shown in fig. 7, the missing tooth section 3421 is provided on the driving gear 342, and when the driving shaft 340 rotates by a preset angle, the driving gear 342 is driven by the driving shaft 340 to rotate to a position where the missing tooth section 3421 is opposite to the transmission gear set 370. When the travel switch 330 fails, the driving motor 320 continues to rotate, the transmission gear set 370 continues to rotate, but since the driving gear 342 is located at a position opposite to the missing tooth section 3421 and the transmission gear set 370, the transmission gear set 370 and the driving gear 342 are no longer meshed, so that the driving gear 342 does not rotate any more, the lifting assembly stops running, the lifting layer plate 130 also stops moving, and the lifting assembly and the driving mechanism are protected in case of failure of the travel switch 330.

Specifically, as shown in fig. 7, the driving gear 320 is partially provided with teeth, partially provided with no teeth, and the portion provided with no teeth is the missing tooth section 3421, and when the missing tooth section 3421 provided with no teeth is opposite to the transmission gear set 370, the missing tooth section 3421 is not engaged with the transmission gear set 370, so that the driving gear 320 stops rotating.

As shown in fig. 3 and 13, the lifting assembly according to an embodiment of the present invention includes a sliding rail 410 disposed on an inner wall of the storage chamber 101, a sliding block 420 is slidably connected to the sliding rail 410, the sliding block 420 is fixedly connected to the lifting layer 130, a pulling rope 430 is fixedly connected to the sliding block 420, the other end of the pulling rope 430 is connected to a pulley 440, and the pulley 440 is disposed on an outer wall of the mounting box 300 and is connected to one end of the transmission shaft 340 extending out of the mounting box 300. Because the embodiment adopts the transmission mode of traction of the traction rope 430, the traction rope 430 is thin and does not need to occupy a large space, and the transmission mode of traction of the traction rope 430 is adopted, only one driving motor 320 is needed, the reel 440 can be retracted or the traction rope 430 can be released, then the sliding block 420 is pulled by the traction rope 430, and the sliding block 420 drives the lifting laminate 130 to slide up and down along the sliding rail 410, so that the number of parts of a transmission assembly is reduced, and the occupied storage room space is reduced; and ball screw subassembly among the prior art needs set up ball screw and guide bar respectively on the relative lateral wall of storeroom to the ball screw of both sides needs a motor drive to rotate respectively, compares in ball screw and ball nut and guide bar structure among the prior art, and this scheme simple structure occupies the space in the storeroom 101 less, further increases storeroom 101's effective usage space.

The specific transmission process of the lifting assembly is as follows: when the driving motor 320 is started to operate, the transmission shaft 340 rotates and drives the pulley 440 to rotate, and when the driving motor 320 rotates forwards, the traction rope 430 is wound on the pulley 440, that is, the traction rope 430 is retracted, and at the moment, the traction rope 430 pulls the sliding block 420, so that the sliding block 420 drives the lifting laminate 130 to move upwards along the sliding rail 410; when the driving motor 320 rotates reversely, the pulley 440 rotates in the opposite direction to release the pulling rope 430, and at this time, since the pulling rope 430 is released and is in a loose state, the lifting layer 130 moves downward along the sliding rail 410 together with the sliding block 420 under the action of gravity, thereby completing the lifting movement of the lifting layer 130.

In one embodiment, only one sliding rail 410 and one sliding block 420 are provided in the lifting assembly, the sliding rail 410 is vertically disposed in the middle of the rear wall of the storage chamber 101, and the sliding block 420 is fixedly connected to the lifting layer plate 130, and then the lifting layer plate 130 is moved up and down by being pulled by the pulling rope 430. However, the structure of only one sliding rail 410 is not stable enough, and if the food material stored on the lifting layer 130 is heavy or the weight is concentrated on a certain area on the layer, the layer may be inclined and the food material may fall down.

In another embodiment, in order to make the overall structure of the lifting layer plate 130 more stable and move up and down more stably, as shown in fig. 3 and 13, two slide rails 410 are provided, the two slide rails 410 are respectively provided on two opposite side walls in the storage chamber 101, the two slide rails 410 are both slidably connected with the sliding blocks 420, the two slide rails 410 are both provided with a fixed pulley 450 above, the two fixed pulleys 450 are respectively fixed on two opposite side walls of the storage chamber 101, the two sliding blocks 420 are both fixedly connected with the pulling ropes 430, the middle portions of the two pulling ropes 430 respectively pass around the corresponding fixed pulleys 450, and the other ends of the two pulling ropes 430 are both connected with the pulley 440. All set up slide rail 410 in storeroom 101 on two relative lateral walls, then will be connected with the both sides of lift plywood 130 respectively through sliding block 420 on two slide rails 410, thereby improve the structural stability of lift plywood 130, when driving motor 320 operation, transmission shaft 340 drives line wheel 440 and rotates together, thereby twines or releases haulage rope 430, make lift plywood 130 rise or descend, because lift plywood 130 both sides all with sliding block 420 fixed connection, both sides all form the strong point promptly, therefore, even deposit heavier edible material on the lift plywood 130, perhaps eat in a certain region on the lift plywood 130 of concentrating on, the condition that also can not lead to lift plywood 130 to incline takes place.

Preferably, the slide rail 410 in the embodiment of the present invention may adopt various slide rails 410 in the prior art, as long as the slide rail 410 capable of achieving the effect required by the present solution can be, for example, a ball slide rail 410, and these slide rails 410 are all in the prior art, and detailed description of the specific structure thereof is omitted here.

Preferably, because two traction ropes 430 are arranged in the lifting assembly, two mutually independent annular grooves can be formed in the reel 440, and the two annular grooves are respectively used for winding the two traction ropes 430, so that the lifting assembly cannot normally operate due to winding between the two traction ropes 430 in the process of winding or releasing the traction ropes 430.

The connection mode between the sliding rail 410 and the inner wall of the storage chamber 101 provided by the embodiment of the present invention is not unique, the slide rails 410 may be directly fixed to the inner wall of the storage chamber 101 by means of screws, etc., or a slide rail reinforcing iron 411 may be provided on the outer wall of the inner container 102 forming the storage chamber 101, as shown in fig. 3 and 13, small holes are arranged on the inner container 102, slide rails 410 on the inner wall of the inner container 102 are connected with slide rail reinforcing iron 411 on the outer wall of the inner container 102 through screws, then, the slide rail reinforcing iron 411 is fixedly connected with the inner wall of the outer shell of the box body 100, compared with the fixing mode of directly fixing the slide rail reinforcing iron on the inner wall of the storage chamber 101 through a screw, the slide rail reinforcing iron 411 is arranged between the outer shell of the box body 100 and the inner container 102, so that the connection between the slide rail 410 and the inner wall of the storage chamber 101 is more stable, thereby better supporting the lifting deck 130 so that the lifting deck 130 can bear a greater weight.

As shown in fig. 3 and 13, a mounting box reinforcing iron 310 may be further disposed on the outer wall of the inner container 102 at a position corresponding to the driving motor 320, and the mounting box reinforcing iron 310 is connected to the mounting box 300 disposed in the storage chamber 101 inside the inner container 102 by screws, so that the mounting box 310 is stably mounted, the driving mechanism can bear the entire weight of the lifting plate 130 and the food stored in the lifting plate 130, and the driving mechanism is prevented from falling off due to the too large weight.

As shown in fig. 14, a pulley cover 441 is covered on the pulley 440 according to an embodiment of the present invention, the pulley cover 441 is connected to the mounting box 300 by screws, and a through hole for passing the traction rope 430 is formed in the pulley cover 441. The spool cover 441 can protect the spool 440 and the traction rope 430 to prevent the spool 440 from being damaged.

In order to ensure the overall beauty of the interior of the storage chamber 101, as shown in fig. 2, decorative plates 140 are disposed on two opposite side walls of the interior of the storage chamber 101 according to an embodiment of the present invention, the sliding rails 410 and the fixed pulleys 450 are disposed between the decorative plates 140 and the side walls, a strip-shaped groove is disposed on the decorative plates 140 along the vertical direction, and the sliding blocks 420 extend out of the strip-shaped groove and are connected to the lifting layer plate 130. By arranging the decorative plate 140 on the side wall in the storage chamber 101, the sliding rail 410, the fixed pulley 450 and other components are arranged between the decorative plate 140 and the side wall, so that when a user opens the storage chamber 101, the sliding rail and other components cannot be seen directly, and the integral appearance is facilitated.

Further, as shown in fig. 3, an air duct cover plate 150 is disposed in the storage chamber 101 according to an embodiment of the present invention, an air duct is formed between the air duct cover plate 150 and the rear wall of the storage chamber 101, and the mounting box 300 is disposed in the air duct at the rear side of the air duct cover plate 150, so that the mounting box 300 and other components are shielded by the air duct cover plate 150, a user cannot directly see the mounting box 300 and the pulling rope 430, and the overall appearance of the refrigerator is further improved.

Preferably, the gap between the decorative panel 140 and the storage compartment 101 is in communication with the air duct formed by the air duct cover 150, thereby facilitating the arrangement of the traction rope 430. Specifically, the reel 440 is fixed to the mounting box 300 provided on the rear wall of the storage chamber 101, the traction rope 430 is led out from the reel 440 to the fixed pulley 450 fixed to the side wall of the storage chamber 101 to change the traction direction of the traction rope 430, and then the other end of the traction rope 430 is fixedly connected to the sliding block 420, thereby forming the lifting assembly.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention 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 invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A refrigerator with an adjustable shelf height, comprising:

a box body, wherein a storage chamber is arranged in the box body,

the lifting laminate is arranged in the storage chamber;

a driving motor disposed on an inner wall of the storage chamber;

a transmission shaft for outputting a torque of the driving motor;

the lifting assembly is connected with the transmission shaft and converts the rotating force output by the transmission shaft into a force for driving the lifting laminated plate to move up and down;

the travel switch is used for controlling the starting and stopping of the driving motor and comprises a trigger end, and when the trigger end is triggered, the travel switch controls the driving motor to stop running;

the trigger piece is positioned between the transmission shaft and the trigger end, a matching part is arranged between the trigger piece and the transmission shaft, the trigger piece can be moved through the matching part when the transmission shaft rotates for a preset angle, and the trigger end is positioned on a moving track of the trigger piece;

the trigger piece comprises a sliding ring sleeved on the transmission shaft and a sliding block fixed on the outer wall of the sliding ring, the matching part is arranged between the transmission shaft and the sliding ring, when the transmission shaft rotates for a preset angle, the sliding ring drives the sliding block to slide through the matching part, and the sliding block triggers the trigger end;

the cooperation portion including set up in recess on the lateral wall of transmission shaft to and set up in arch on the inner wall of sliding ring, the arch set up in on the movement track of slider, and the arch set up in the slider with between the transmission shaft, the trigger end is the shell fragment, the slider with shell fragment extrusion contact, work as when the transmission shaft rotates and predetermines the angle, the transmission shaft drives the recess rotates to with protruding relative position, the elasticity of shell fragment makes the sliding ring with the slider is followed the radial slip of transmission shaft, protruding entering in the recess, the shell fragment is bounced, so that travel switch is triggered.

2. The refrigerator with adjustable shelf height of claim 1, wherein the inner wall of the storage chamber is further provided with a slider mounting seat, the slider mounting seat is provided with a guide post, the slider is provided with a strip-shaped through hole, the guide post extends into the strip-shaped through hole, and the slider slides along the length direction of the strip-shaped through hole.

3. The laminate height adjustable refrigerator of claim 2, further comprising a mounting box disposed on a rear wall of the storage compartment, wherein the driving motor, the travel switch, the trigger and the slider mounting seat are disposed in the mounting box, one end of the driving shaft is disposed in the mounting box, and the other end of the driving shaft extends out of the mounting box and is connected to the lifting assembly.

4. The refrigerator with adjustable shelf height of claim 1, wherein the transmission shaft is fixedly connected with a driving gear, torque is transmitted between the driving gear and the driving motor through a transmission gear set, the driving gear is provided with a tooth lacking section, and when the transmission shaft rotates by a preset angle, the transmission shaft drives the driving gear to rotate to a position where the tooth lacking section is opposite to the transmission gear set.

5. The refrigerator with adjustable shelf height of any one of claims 1 to 4, wherein the lifting assembly comprises a slide rail arranged on the inner wall of the storage chamber, a slide block is connected on the slide rail in a sliding manner, the slide block is fixedly connected with the lifting shelf, a traction rope is fixedly connected on the slide block, the other end of the traction rope is connected with a wire wheel, and the wire wheel is connected with the transmission shaft.

6. The refrigerator with adjustable shelf height of claim 5, wherein the slide rails are provided with two slide rails and are respectively disposed on two opposite side walls in the storage chamber, the slide blocks are slidably connected to the two slide rails, fixed pulleys are disposed above the two slide rails, traction ropes are fixedly connected to the two slide blocks, middle portions of the two traction ropes respectively pass by the corresponding fixed pulleys, and the other ends of the two traction ropes are connected to the reel.

7. The refrigerator with adjustable shelf height of claim 6, wherein when the refrigerator further comprises a mounting box, the mounting box is disposed on the rear wall of the storage chamber, the reel is covered with a reel cover, the reel cover is connected with the mounting box, and the reel cover is provided with a through hole for passing the traction rope.

8. The refrigerator of claim 6, wherein the two opposite side walls of the storage compartment are provided with decorative plates, the sliding rail and the fixed pulley are arranged between the decorative plates and the side walls, the decorative plates are provided with bar-shaped grooves along the vertical direction, and the sliding blocks extend out of the bar-shaped grooves to be connected with the lifting plate.