CN106642961B

CN106642961B - Refrigerator shelf lifting device and refrigerator

Info

Publication number: CN106642961B
Application number: CN201611090289.6A
Authority: CN
Inventors: 覃伟柱; 李婷
Original assignee: TCL Technology Group Co Ltd
Current assignee: TCL Technology Group Co Ltd
Priority date: 2016-12-01
Filing date: 2016-12-01
Publication date: 2021-03-23
Anticipated expiration: 2036-12-01
Also published as: CN106642961A

Abstract

The invention discloses a refrigerator shelf lifting device and a refrigerator, comprising: the partition board and the driving mechanism are used for driving the partition board to move along the vertical direction, the driving mechanism comprises at least one guide rail which is arranged on the inner side of the refrigerator body and is provided with a guide rail cavity, and the driving mechanism is used for driving the partition board to slide along the guide rail, and the partition board is partially arranged in the guide rail cavity and is connected with the driving mechanism through a traction strip. According to the invention, the driving device and the sliding rails are arranged, so that the refrigerator shelf can move along the sliding rails under the traction of the driving device, and the problems that the shelf of the existing refrigerator is inflexible to move and complicated to operate, and the storage space in the refrigerator is unreasonably utilized because the placing position of the partition plate cannot be freely adjusted are solved.

Description

Refrigerator shelf lifting device and refrigerator

Technical Field

The invention relates to the technical field of refrigerators, in particular to a refrigerator shelf lifting device and a refrigerator.

Background

A plurality of partition plates for placing articles are generally arranged in the current refrigerator, but the partition plates are fixed through sliding grooves in the inner wall of the refrigerator and cannot move up and down freely. When the partition board needs to move up/down, the partition board must be firstly drawn out from the chute and then placed in the target chute, so as to realize the downward/upward movement of the partition board. The existing refrigerator shelf mainly has the following problems:

1) the operation of moving the partition plate is complicated;

2) the storage space separated by the partition board is determined by the distance between the sliding chutes, which is not beneficial to the reasonable utilization of the storage space in the refrigerator;

3) when the partition board is moved, articles placed on the partition board need to be taken out, and inconvenience is brought to users.

Thus, the prior art has yet to be improved and enhanced.

Disclosure of Invention

The invention aims to solve the technical problem that the refrigerator shelf lifting device and the refrigerator are provided to overcome the defects of the prior art, so that the problems that the shelf of the conventional refrigerator is complex to move and operate, and the storage space partitioned by a partition plate cannot be freely adjusted, so that inconvenience is brought to users.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a refrigerator shelf lifting device, comprising: the partition board and be used for driving the partition board along the actuating mechanism of vertical direction motion, actuating mechanism includes that at least one sets up in the inboard guide rail that has the guide rail chamber of refrigerator body, a plurality of pull strip and sets up in the drive arrangement at refrigerator top, the partition board with guide rail chamber sliding connection, pull the strip respectively with partition board and drive arrangement are connected, so that drive arrangement drives through pulling the strip the partition board is followed the guide rail chamber of guide rail slides.

Refrigerator shelf elevating gear, wherein, actuating mechanism includes 2 type of falling U guide rails, 2 type of falling U guide rails symmetry set up in refrigerator body is inboard.

The refrigerator shelf lifting device further comprises two rotating shafts used for guiding the traction strips, and the two rotating shafts are symmetrically arranged at the corners of the inverted U-shaped guide rails.

Refrigerator shelf elevating gear, wherein, pull the strip including two symmetry set up in the guide rail intracavity and can pull the strip for the gliding son of guide rail chamber, son pull strip one end with baffle one end is connected, and the other end is walked around the rotation axis with actuating mechanism is connected.

The refrigerator shelf lifting device comprises a driving device, a gear set and a main rotating shaft, wherein the driving device comprises a driving motor, the gear set and the main rotating shaft, the driving motor is connected with the rotating main shaft through the gear set, and the rotating main shaft is arranged at the top of the refrigerator and penetrates through the guide rail cavity; the traction strip is fixed on the main rotating shaft and moves relative to the guide rail cavity under the drive of the main rotating shaft.

The refrigerator shelf lifting device further comprises at least one limit switch used for limiting the movement position of the partition plate, and the limit switch is arranged in the guide rail cavity.

The refrigerator shelf lifting device comprises a refrigerator shelf lifting device, wherein the partition plate comprises a partition plate body and a partition plate support platform which is detachably arranged on the partition plate body; the partition board supporting table is partially arranged in the guide rail cavity in a sliding mode and connected with the traction strip, and the driving device drives the partition board supporting table to move in the guide rail cavity along the vertical direction through the traction strip.

In the refrigerator shelf lifting device, the clapboard support table is of an L-shaped structure consisting of a first support rod and a second support rod, and the first support rod is arranged in the guide rail cavity in a sliding manner and is connected with the traction strip; the first support rod is arranged in the direction perpendicular to the movement direction of the partition plate, and the second support rod is detachably connected with the partition plate body.

The refrigerator shelf lifting device is characterized in that the second support rod is provided with a limiting plate for preventing the refrigerator from being scratched by the partition plate body, and the partition plate body is detachably arranged on the second support rod and is in contact with the limiting plate.

A refrigerator, comprising: the box body is internally provided with an accommodating cavity; the refrigerator shelf lifting device is arranged in the accommodating cavity and is any one of the refrigerator shelf lifting devices.

Has the advantages that: compared with the prior art, the invention provides a refrigerator shelf lifting device and a refrigerator, which comprise: the partition board and the driving mechanism are used for driving the partition board to move along the vertical direction, the driving mechanism comprises at least one guide rail which is arranged on the inner side of the refrigerator body and is provided with a guide rail cavity, and the driving mechanism is used for driving the partition board to slide along the guide rail, and the partition board is partially arranged in the guide rail cavity and is connected with the driving mechanism through a traction strip. According to the invention, the driving device and the sliding rails are arranged, so that the refrigerator shelf can move along the sliding rails under the traction of the driving device, and the problems that the shelf of the existing refrigerator is inflexible to move and complicated to operate, and the storage space in the refrigerator is unreasonably utilized because the placing position of the partition plate cannot be freely adjusted are solved.

Drawings

Fig. 1 is a view illustrating a state of use of a shelf lifting device for a refrigerator according to the present invention.

Fig. 2 is a front view of the refrigerator shelf lifting apparatus provided in the present invention.

Fig. 3 is a schematic structural view of a driving device of a refrigerator shelf lifting device assembly according to the present invention.

Fig. 4 is a front view of a shelf tray and a rail of the refrigerator shelf lifting device assembly according to the present invention.

Fig. 5a is a top view of a shelf bracket and a guide rail of the refrigerator shelf lifting device assembly according to the present invention.

Fig. 5b is a top view of a guide rail of the refrigerator shelf lifting device assembly provided by the present invention.

Fig. 5c is a top view of a shelf tray of the refrigerator shelf lifter assembly according to the present invention.

Fig. 6 is a schematic diagram of a driving circuit of the refrigerator shelf lifting device assembly provided by the invention.

Fig. 7 is a schematic structural diagram of a refrigerator provided by the present invention.

Detailed Description

The invention provides a refrigerator shelf lifting device and a refrigerator, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail by referring to the attached drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention will be further explained by the description of the embodiments with reference to the drawings.

Referring to fig. 1 and 2, fig. 1 is a diagram illustrating a use state of a refrigerator shelf lifting device according to the present invention, and fig. 2 is a front view of the refrigerator shelf lifting device according to the present invention. The refrigerator shelf lifting device comprises a partition plate 2 and a driving mechanism 1; the drive mechanism 1 comprises a drive means, a number of traction bars 14 and at least one guide rail 15. The guide rail 15 is provided inside the refrigerator body 3 and has a guide rail cavity. The partition board 2 is partially arranged in the guide rail cavity and is in sliding connection with the guide rail cavity, and the traction strips 14 are respectively connected with the partition board 2 and the driving device, so that the driving device drives the partition board 2 to slide along the guide rail cavity of the guide rail through the traction strips 14. In this way, the partition board 2 is placed in the guide rail cavity and the partition board 2 is pulled by the driving device, so that the partition board 2 can move along the guide rail 15, and the size of each storage space in the refrigerator can be flexibly adjusted. Meanwhile, the movement operation of the partition plate 2 is simpler and more convenient and automatic, and great convenience is brought to the use of a user.

In this embodiment, the inside of the refrigerator body 3 is provided with 2 guide rails 15, one guide rail is located on one side of the inside of the refrigerator body 3 close to the refrigerator door, the other guide rail is arranged on one side of the inside of the refrigerator body 3 far away from the refrigerator door, and the two guide rails 15 are parallel to each other. The guide rail is of an inverted U-shaped structure with a guide rail cavity, so that two ends of the partition plate are simultaneously pulled by the pulling strips, and the partition plate can stably move along the guide rail. It should be noted that the position where the 2 guide rails are disposed inside the refrigerator body 3 is not limited to the above description, and may be disposed at any position inside the refrigerator body 3 as long as the partition plate 2 is subjected to uniform traction and supporting force. In a modified embodiment of this embodiment, the number of the guide rails 15 may also be 1, and the guide rails are disposed at the middle position of the inner side of the refrigerator body 3, so that the opposite ends of the partition board 2 are simultaneously subjected to the traction force of the traction strips disposed in the guide rails 15, and the partition board 2 moves smoothly under the action of the traction force.

In an embodiment of the present invention, the guide rails 15 may also be strip-shaped guide rails disposed on inner side walls of the refrigerator body 3, and the strip-shaped guide rails are disposed in pairs on the inner side walls of both sides of the refrigerator door, so that the partition 2 moves up and down along the strip-shaped guide rails.

In this embodiment, the guide rail cavities include a first side cavity 152, a second side cavity 153 and a top cavity 151, the first side cavity 152 and the second side cavity 153 are respectively located on two opposite inner side walls of the refrigerator, and the top cavity 151 is located on a top wall of the refrigerator. In this embodiment, the intersection of the first side cavity 152 and the top cavity 151 is referred to as a first corner 158, and the intersection of the second side cavity 153 and the top cavity 151 is referred to as a second corner 159. The first and

second corners

158 and 159 are provided with the first and

second rotation shafts

12 and 13, respectively.

In this embodiment, as shown in fig. 3, the driving device includes a driving motor 16, a reduction gearbox 17, a gear set 18 and a main rotating shaft 11, the driving motor 16 is connected to the reduction gearbox 17 to provide rotating power for the reduction gearbox 17, and the reduction gearbox 17 is connected to the main rotating shaft 11 through the gear set 18. The main rotating shaft 11 is disposed at the top of the refrigerator and penetrates the top cavity 151, and the main rotating shaft 11 is connected to the gear set 18, so that the main rotating shaft 11 is driven by the gear set 18 to rotate. The main rotating shaft 11 is connected with 2 traction strips 14, and the 2 traction strips are respectively arranged in the two guide rail cavities and connected with the partition board 2. The pulling strip 14 includes a first pulling strip 141 and a second pulling strip 142. The first drawing strip 141 is drawn out from the main rotating shaft 11, passes through the first rotating shaft 12 disposed at the first corner 158, turns from a horizontal direction to a vertical direction, extends into the first side cavity 152, and draws the partition. The second pulling strip 142 is extended from the main rotating shaft 11 to the second side cavity 153 from the horizontal direction to the vertical direction via the second rotating shaft 13 disposed at the second corner 159, and pulls the partition 2. This reduces the resistance of the first and

second traction bars

141 and 142 in turning by guiding the first and

second traction bars

141 and 142 to extend from the top cavity 151 of the guide rail cavity to the first and

second side cavities

152 and 153, respectively, using the principle of a fixed pulley by the first and

second rotation shafts

12 and 13 disposed at the first and

second corners

158 and 159, respectively. Thus, when the main rotating shaft 11 rotates, the two ends of the partition board 2 are pulled by the pulling strips 14, so that the two ends of the partition board 2 simultaneously receive the same pulling force and smoothly slide up and down along the guide rail under the action of the pulling force.

In the present embodiment, first bearings 111 are respectively disposed at both ends of the main rotating shaft 11. The first bearing 111 provides a uniform supporting force to the main rotating shaft 11. Both ends of the first and second

rotating shafts

12 and 13 are provided with second bearings 121, respectively. The 1 main rotation axis 11 corresponds to the 2 first rotation axes 12 and the 2 second rotation axes 13.

The gear set 18 includes a first gear 182 and a second gear 181, the first gear 182 is fixed in the middle of the main rotating shaft 11 to provide uniform rotating power for the main rotating shaft 11, and the second gear 181 is disposed on the reduction gearbox 17 and engaged with the first gear 182. The reduction box 17 reduces the high-speed rotation power output by the driving motor 16 to a low-speed rotation power and drives the second gear 181 to rotate, and the second gear 181 drives the first gear 182 engaged with the second gear to rotate, so that the main rotating shaft 11 fixedly connected with the first gear 182 and the first gear 182 rotate synchronously, and the main rotating shaft 11 is provided with the rotation power. The rotational speed of the rotational power output from the drive motor 16 is reduced by providing the reduction gear box 17, and the torque is increased so that the rotational speed of the main rotating shaft 11 is low and gentle. Thus, when the main rotating shaft 11 pulls the partition board 2 up and down by the pulling strips 14, even if a weight is placed on the partition board 2, the partition board 2 can be ensured to move uniformly and stably.

When the main rotating shaft 11 is driven by the first gear to rotate clockwise, the first pulling strip 141 fixed to the main rotating shaft 11 is driven to rotate clockwise around the main rotating shaft 11 along with the clockwise rotation of the main rotating shaft 11, so that the first pulling strip 141 disposed in the top chamber moves towards the main rotating shaft 11, and the first pulling strip 141 disposed in the first side chamber 152 moves upwards, thereby driving the partition board 2 to ascend. Meanwhile, the second pulling strip 142 also rotates clockwise around the main rotating shaft 11 along with the clockwise rotation of the main rotating shaft 11, so that the second pulling strip 142 disposed in the top chamber moves towards the main rotating shaft 11, and the second pulling strip 142 disposed in the second side chamber 153 moves upwards, thereby lifting the partition board 2. Thus, when the main rotating shaft 11 rotates clockwise, the first drawing strip 141 and the second drawing strip 142 both drive the partition 2 to move upward. Similarly, when the main rotating shaft 11 rotates counterclockwise, the first pulling strip 141 and the second pulling strip 142 are driven by the main rotating shaft 11 to pull the partition board 2 to move downward.

As shown in fig. 2 and 4, the partition board 2 includes a partition board body 21 and four partition board pallets 22, and the partition board body 21 is disposed on the partition board pallets 22 and is detachably connected to the partition board pallets 22. The partition board body 21 is a rectangular shelf for placing articles, and the rectangular shelf can be a glass plate, an engineering plastic plate and the like. The 4 corners of the rectangular shelf are respectively arranged on the 4 clapboard support tables 22, so that the clapboard body 21 is uniformly and stably supported, and stable support is provided for the articles placed on the clapboard body 21.

The partition board saddle 22 is an L-shaped structure, the L-shaped structure includes a first supporting rod 221 and a second supporting rod 222, and the first supporting rod 221 and the second supporting rod 222 are perpendicular to each other and are integrally connected. The first supporting rod 221 is a rectangular block disposed in the first side cavity 152/the second side cavity 153, and the rectangular block includes a first side wall 2211, a second side wall 2212, a third side wall 2213, a fourth side wall, a fifth side wall 2215 and a sixth side wall 2216. The first side wall 2211 is vertically provided with a second supporting rod 222, and the third side wall 2213 is provided with a traction strip 14. The second support rod 222 comprises a support platform 2221 and a limit plate 2222, wherein the support platform 2221 is connected with the separator body 21 and provides a support point for one corner of the separator body 21; the position-limiting plate 2222 protrudes upward relative to the saddle, so that a groove 23 is formed between the saddle and the first side wall 2211 of the second supporting rod 222 and the first supporting rod 221. When baffle body 21 is arranged in during 2221 on the saddle, because first die-pin 221 is arranged in completely the guide rail intracavity, second die-pin 222 contacts with the inner wall of refrigerator, the recess will baffle body 21 separates with the refrigerator inner wall, makes baffle body 21 with limiting plate 2222 contacts, effectively prevents baffle body 21 is at the in-process direct contact refrigerator inner wall that reciprocates and fish tail refrigerator inner wall.

In the modified embodiment of this embodiment, when the number of the guide rail is 1, 2 partition pallets 22 are correspondingly provided, and 2 first support rods of the 2 partition pallets are respectively disposed in the first side cavity 152 and the second side cavity 153 of the guide rail 15. Thus, when the partition body 21 is detachably connected to the 2 partition pallets, the 2 partition pallets 22 are located in the middle of two opposite sides of the partition body 21, so as to provide a balanced support for the partition body 21.

In this embodiment, in order to completely position the first idler bar 221 in the first side cavity 152/second side cavity 153 of the guide rail cavity. As shown in fig. 5a, 5b and 5C, the cross section of the first/second side cavities 152/153 is a C-shaped frame with one side open, and the C-shaped frame includes a first inner wall 154, a second inner wall 155, a third inner wall 156 and a fourth inner wall 157, when viewed from the top of the refrigerator. An opening used for being matched with the second supporting rod 222 is arranged in the middle of the fourth inner wall 157, and the width of the opening is not smaller than that of the second supporting rod 222. The first inner wall 154 is in contact with the second side wall 2212 of the first bracket bar 221, the second inner wall 155 and the third side wall 156 are in contact with the fifth side wall 2215 and the sixth side wall 2216 of the first bracket bar, respectively, and the fourth inner wall is in contact with the first side wall of the first bracket bar. Therefore, the first support rod is safely clamped in the first side cavity 152/the second side cavity 153, when the first support rod moves up/down under the action of the force in the vertical direction of the traction strip 14, a plurality of side surfaces of the first support rod 221 are matched with a plurality of inner walls of the first side cavity 152/the second side cavity 153, the degree of freedom of the first support rod 221 in other directions is limited, the first support rod 221 can only move stably in the vertical direction without deviating from the direction or shaking, and the stability of the upward/downward moving direction of the partition plate body 21 connected with the first support rod 221 is ensured.

In the present embodiment, as shown in fig. 2 and 6, the diaphragm assembly further includes a control switch 31 and a control circuit for controlling the driving mechanism. The control switch 31 may be provided at any position of the refrigerator. Preferably, it is disposed at the upper end of the refrigerator body 3 for user's operation.

Further, a limit switch 4 is provided on the guide rail, and the limit switch 4 includes a first limit switch 41 for limiting the maximum height at which the partition 2 ascends and a second limit switch 42 for limiting the maximum height at which the partition 2 descends. The distance between the first limit switch 41 and the second limit switch 42 is the maximum stroke of the partition board 2. When the partition board 2 rises to a first limit switch 41, triggering the first limit switch 41 to be opened, and stopping the partition board 2 from rising; when the partition board 2 descends to the second limit switch 42, the second limit switch 42 is turned on, and the partition board 2 stops descending. Therefore, the limit switch 4 limits the moving stroke of the partition board 2, and the refrigerator or the partition board 2 is prevented from being damaged due to the fact that the partition board 2 touches the top wall or the bottom wall of the refrigerator without limitation in the ascending or descending process.

The control circuit of the driving mechanism comprises a driving module for controlling the driving motor to move, a first filtering module for filtering the current generated by the power supply module and a second filtering module for filtering the interference signal of the input voltage, wherein the first filtering module and the second filtering module are connected with the driving module.

The first filtering module comprises a first capacitor C1 and a second capacitor C2, wherein one end of the first capacitor C1 and one end of the second capacitor C2 are both connected with a VCC end; the other end of the first capacitor C1 and the other end of the second capacitor C2 are both grounded.

The second filtering module comprises a third capacitor C3 and a fourth capacitor C4, wherein one end of the third capacitor C3 and one end of the fourth capacitor C4 are both connected with the VDD end; the other end of the third capacitor C3 and the other end of the fourth capacitor C4 are both grounded.

The driving module comprises a driving chip, a normally closed switch SW1, a normally closed switch SW2 and a normally open double-linkage switch SW3, wherein an IN1 of the driving chip is connected with the anode of a diode D2 and one end of a normally closed switch SW1 and is grounded through a second resistor R2; the IN2 of the driving chip is connected with the anode of the diode D1 and one end of the normally closed switch SW2 and is grounded through a third resistor R3; the cathodes of the diode D2 and the diode D1 are connected with the ENA end; the other end of the normally closed switch SW1 and the other end of the normally closed switch SW2 are both connected with one end of a normally open double-linkage switch SW3, and the other end of the normally open double-linkage switch SW3 is connected with the VCC end through a first resistor R1; the Sense A end of the driving chip is grounded through a fourth resistor R4; the + VSS end of the driving chip is connected with the VCC end, and the + VS end of the driving chip is connected with the VDD end; the OUT1 end of the driving chip is connected with the 1 end of the driving motor, and the OUT2 end of the driving chip is connected with the 2 end of the driving motor. In this embodiment, the driver chip is model number L298N. Of course, other types of driver chips having the same function may be used.

The control switch SW3 is a normally open double-linkage switch. When the connection is performed according to SW3, 1-2 is connected; 2-3 communication is carried out below SW 3; loose hand and not press, 2 hang in the air.

When the switch is pressed on the upper side of SW3, 1-2 is connected, and current passes through the normally closed switch SW1, so that the pin IN1 is at a high potential; meanwhile, current passes through a diode D2, so that a pin ENA is also at a high potential; meanwhile, the port of the pin IN2 is pulled to GND through a resistor R3 and is at a low potential; the motor MG1 rotates in the forward direction to rotate the main rotating shaft 11 in the clockwise direction, and the partition plate rises. When the switch SW1 is triggered to open, the circuit is disconnected, IN1 and ENA are both low, the motor stops, and the partition 2 stops rising.

When the lower side of SW3 is pressed, 2-3 are connected, and the current passes through a normally closed switch SW2, so that the pin IN2 is at a high potential; meanwhile, current passes through a diode D1, so that a pin ENA is also at a high potential; meanwhile, the port of the pin IN1 is pulled to GND through a resistor R2 and is at a low potential; the motor MG1 is reversely rotated so that the main rotating shaft 11 is rotated counterclockwise and the partition plate 2 is lowered. Since the normally closed switch SW2 is disposed on the guide rail 15, when the switch SW2 is triggered to open and open the circuit, IN2 and ENA are both at low level, the motor stops and the partition 2 stops descending.

The present invention also provides a refrigerator, as shown in fig. 7, the refrigerator including: the box 100 is provided with a containing cavity 101 in the box 100. The refrigerator shelf lifting device 200 is arranged in the accommodating cavity 101.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A refrigerator shelf lifting device, characterized in that it comprises: the partition board is connected with the guide rail cavity in a sliding manner, and the traction strips are respectively connected with the partition board and the driving device so that the driving device drives the partition board to slide along the guide rail cavity of the guide rail through the traction strips;

the partition plate comprises a partition plate body and a partition plate support platform detachably arranged on the partition plate body, and the partition plate support platform is of an L-shaped structure formed by a first support rod and a second support rod; a plurality of side surfaces of the first support rod are matched with a plurality of inner walls of the side cavity of the guide rail cavity; the second supporting rod comprises a supporting table and a limiting plate, a groove is formed between the supporting table and the first supporting rod, when the partition plate body is arranged on the supporting table, the groove separates the partition plate body from the inner wall of the refrigerator, and the partition plate body is in contact with the limiting plate.

2. The refrigerator shelf lifting device according to claim 1, wherein the driving mechanism comprises 2 inverted U-shaped guide rails, and the 2 inverted U-shaped guide rails are symmetrically disposed inside the refrigerator body.

3. The refrigerator shelf lifting device as claimed in claim 2, wherein the driving mechanism further comprises two rotating shafts for guiding the drag bar, the two rotating shafts being symmetrically disposed at corners of the inverted U-shaped guide rail.

4. The refrigerator shelf lifting device according to claim 3, wherein the pulling bar comprises two sub pulling bars symmetrically disposed in the guide rail cavity and slidable with respect to the guide rail cavity, one end of the sub pulling bar is connected to one end of the partition plate, and the other end of the sub pulling bar is connected to the driving mechanism by bypassing the rotating shaft.

5. The refrigerator shelf lifting device according to claim 1, wherein the driving means comprises a driving motor, a gear set and a main rotating shaft, the driving motor is connected with the main rotating shaft through the gear set, and the main rotating shaft is internally arranged at the top of the refrigerator and penetrates through the guide rail cavity; the traction strip is fixed on the main rotating shaft and moves relative to the guide rail cavity under the drive of the main rotating shaft.

6. The refrigerator shelf lifting device according to claim 1, further comprising at least one limit switch for limiting a movement position of the partition, the limit switch being disposed in the guide rail cavity.

7. The refrigerator shelf lifting device according to claim 1, wherein the partition plate tray is partially slidably disposed in the guide rail cavity and connected to the traction strip, and the driving device drives the partition plate tray to move in the guide rail cavity in a vertical direction by the traction strip.

8. The refrigerator shelf lifting device of claim 7, wherein the first bracket bar is slidably disposed in the guide rail cavity and connected to the traction bar; the first support rod is arranged in the direction perpendicular to the movement direction of the partition plate, and the second support rod is detachably connected with the partition plate body.

9. A refrigerator, comprising: the box body is internally provided with an accommodating cavity; characterized in that it further comprises a refrigerator shelf lifting device arranged in the accommodating cavity, the refrigerator shelf lifting device being as defined in any one of claims 1 to 8.