Drawer lifting device and refrigerator

Abstract

The utility model discloses a lifting device of a drawer and a refrigerator. The drawer comprises a drawer bucket located in a box body and a drawer door arranged in the pulling-out direction of the drawer bucket. The lifting device comprises a horizontal telescopic assembly arranged in the box body and connected with the drawer door; a plurality of supporting rods are arranged in the lifting assembly, the lifting assembly is hinged to the horizontal telescopic assembly, and the lifting assembly is further hinged to the drawer bucket; when the horizontal telescopic assembly drives the drawer door to do horizontal telescopic motion, the horizontal telescopic assembly is further matched with the lifting assembly, and the horizontal telescopic assembly and the lifting assembly jointly drive the drawer bucket to do lifting motion along the parabolic track. According to the lifting device, the horizontal telescopic assembly and the lifting assembly are matched to jointly drive the drawer bucket to do lifting motion along the parabola track, and when the drawer bucket does descending motion along the parabola track, the descending speed can be slowed down, impact force generated in the descending process is reduced, and the service life of the lifting device or the drawer is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration, in particular to a lifting device for a drawer and a freezer. Background Art

[0002] Currently, household freezers generally have an upper door and a lower box structure, and the accommodation space inside the box body is an integral structure. However, due to the structure of the freezer, it is difficult to take out the items stored at the bottom of the freezer. The taking-out method is complex, time-consuming and laborious, and at the same time, the cold quantity is lost and the inside of the freezer is frosted due to opening the door for a long time.

[0003] To solve the above problems, some manufacturers divide the accommodation space into upper and lower layers by using the grille inside the box body of the freezer, and then a drawer is provided at the bottom of the outer side wall of the freezer corresponding to the lower layer of the accommodation space. When it is necessary to take in or out the items at the bottom of the freezer, only need to horizontally pull out the drawer first, and then the drawer moves vertically upward through its own lifting device to achieve the purpose of opening the drawer.

[0004] However, for the lifting device adopted by the drawer provided at the bottom of the freezer, when it descends, it mostly relies on its own gravity to achieve vertical descent, resulting in a rapid descent process. The impact force generated during the descent process will damage itself or the lifting device, reducing its service life. Summary of the Utility Model

[0005] In view of this, the utility model provides a lifting device for a drawer and a freezer, which is used to solve the problem in the prior art that when the drawer descends vertically through the lifting device, the descent process is rapid, and the impact force generated during the descent process will damage itself or the lifting device, reducing its service life.

[0006] The technical solution of the utility model is a lifting device for a drawer. The drawer includes a drawer bucket located inside the box body and a drawer door arranged in the pulling direction of the drawer bucket. The lifting device includes:

[0007] A horizontal telescopic component, which is arranged inside the box body and connected to the drawer door;

[0008] A lifting component, which contains a plurality of support rods. The lifting component is hinged to the horizontal telescopic component, and the lifting component is also hinged to the drawer bucket;

[0009] Wherein, when the horizontal telescopic component drives the drawer door to perform horizontal telescopic movement, the horizontal telescopic component also cooperates with the lifting component to jointly drive the drawer bucket to perform lifting movement along a parabolic trajectory.

[0010] Further, lifting components are respectively hinged to both sides of the drawer bucket, each lifting component is respectively hinged to the horizontal telescopic component, and the horizontal telescopic components are respectively arranged on the inner side walls of the corresponding two sides of the drawer bucket of the box body.

[0011] Further, the horizontal telescopic component includes a drawer guide rail, a transmission gear and a transmission rack;

[0012] Two groups of transmission gears are arranged on the inner side walls of the corresponding two sides of the drawer bucket of the box body along the lifting direction of the drawer bucket, and at least two transmission gears are arranged in each group of transmission gears along the horizontal direction of the drawer door; A transmission rack is sleeved and meshed between each group of transmission gears, each transmission rack is meshed with one end of the drawer guide rail, and the other ends of all the drawer guide rails are connected with a drawer door.

[0013] Further, driving blocks are arranged on one ends of the drawer guide rails on the same side of the drawer bucket and face one side of the other drawer guide rail, and the driving blocks are meshed with the transmission racks.

[0014] Further, the lifting component is formed by connecting a plurality of support rods. Two support rods at one end of the lifting component are respectively hinged to the transmission gears on the same side of the drawer bucket and far away from the drawer door; One support rod at the other end of the lifting component is hinged to the drawer bucket;

[0015] Wherein, when the drawer bucket moves upward along a parabolic trajectory, the lifting component is in an extended state; When the drawer bucket moves downward along a parabolic trajectory, the lifting component is in a contracted state.

[0016] Further, the lifting component includes a first support rod, a second support rod, a third support rod, a fourth support rod, a fifth support rod, a sixth support rod, a seventh support rod, an eighth support rod and a ninth support rod;

[0017] The transmission gears in the lower group and far away from the drawer door are all hinged to one end of the first support rod, and the other end of the first support rod is respectively hinged to one end of the third support rod, one end of the fourth support rod and one end of the fifth support rod;

[0018] A set of drive gears located above and away from the drawer door are all hinged to one end of the second support rod, and the middle of the second support rod is hinged to the other end of the third support rod; the other end of the second support rod is respectively hinged to one end of the sixth support rod and one end of the eighth support rod, and the other end of the eighth support rod is hinged to the other end of the fourth support rod; the middle of the fifth support rod is hinged to the middle of the sixth support rod, the other end of the fifth support rod is hinged to one end of the ninth support rod, the other end of the ninth support rod is hinged to the middle of the seventh support rod, one end of the seventh support rod is hinged to the other end of the sixth support rod; the other end of the seventh support rod is hinged to the side of the drawer bucket away from the drawer door.

[0019] Further, when the drawer bucket moves upward along a parabolic trajectory and is at the highest point, the second support rod, the third support rod, the fourth support rod, and the eighth support rod can enclose to form a first parallelogram.

[0020] Further, when the drawer bucket moves upward along a parabolic trajectory and is at the highest point, the fifth support rod, the sixth support rod, the seventh support rod, and the ninth support rod can enclose to form a second parallelogram.

[0021] Further, the drawer further includes a balance assembly, and the balance assembly includes a first roller provided at the bottom of the box body, a second roller provided inside the drawer door, and a traction rope;

[0022] One end of the traction rope is connected to the side of the drawer bucket facing the drawer door, and then winds around the first roller and the second roller and is connected to the side of the drawer bucket away from the drawer door, so that the drawer bucket maintains balance during the process of moving up and down along a parabolic trajectory.

[0023] The present invention also provides a freezer, and the freezer includes a box body, and a lifting device of the above-mentioned drawer is provided at the bottom of the box body.

[0024] Compared with the prior art, the present invention has at least the following beneficial effects:

[0025] The present invention cooperates the horizontal telescopic assembly with the lifting assembly to jointly drive the drawer bucket to move up and down along a parabolic trajectory, and when the drawer bucket moves downward along a parabolic trajectory, it can slow down the descending speed, reduce the impact force generated during the descending process, and extend the service life of the lifting device or the drawer. Description of the Drawings

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs; the terms used in the specification of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this utility model; the terms "comprising" and "having" and any variations thereof in the specification and claims of this utility model and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this utility model or the above drawings are used to distinguish different objects and are not used to describe a specific order.

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the following-described drawings are only some embodiments of this utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0028] Figure 1 It is a cross-sectional view of the drawer of this utility model in a fully open state;

[0029] Figure 2 It is Figure 1 an enlarged schematic view of the reference numeral A in

[0030] Figure 3 It is Figure 1 an enlarged schematic view of the reference numeral B in

[0031] Figure 4 It is a cross-sectional view of the drawer of this utility model in a fully closed state;

[0032] Figure 5 It is a schematic structural view of the freezer of this utility model.

[0033] Reference numerals:

[0034] 1. Cabinet body;

[0035] 2. Cabinet door;

[0036] 10. Drawer bin;

[0037] 101. First connecting block; 102. First connecting block;

[0038] 20. Drawer door;

[0039] 201. Handshake part;

[0040] 30. Horizontal telescopic component;

[0041] 301. Drawer guide rail; 302. Driving gear; 303. Driving rack; 304. Driving block;

[0042] 40. Lifting assembly;

[0043] 401. First support rod; 402. Second support rod; 403. Third support rod; 404. Fourth support rod; 405. Fifth support rod; 406. Sixth support rod; 407. Seventh support rod; 408. Eighth support rod; 409. Ninth support rod; 410. First parallelogram; 411. Second parallelogram;

[0044] 50. Balancing assembly;

[0045] 501. First roller; 502. Second roller; 503. Traction rope. Detailed implementation mode

[0046] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. Thus, a feature pointed out in this specification will be used to illustrate one feature of one embodiment of the present utility model, rather than implying that each embodiment of the present utility model must have the feature described. In addition, it should be noted that this specification describes many features. Although some features may be combined together to show a possible system design, these features may also be used in other combinations not specifically described. Thus, unless otherwise stated, the described combination is not intended to be limiting.

[0047] The principle and structure of the present utility model will be described in detail below with reference to the drawings and embodiments.

[0048] Embodiment 1

[0049] Existing manufacturers use the grille inside the freezer cabinet to divide the accommodation space of the freezer into upper and lower layers. Then, a drawer is provided at the bottom of the outer wall of the freezer corresponding to the lower layer of the accommodation space. When it is necessary to take or place items at the bottom of the freezer, one only needs to first horizontally pull out the drawer, and then the drawer moves vertically upward through its own lifting device to achieve the purpose of opening the drawer.

[0050] However, for the lifting device adopted by the drawer provided at the bottom of the freezer, its descent mostly relies on its own gravity to achieve vertical descent, resulting in a rapid descent process. The impact force generated during the descent process will cause damage to itself or the lifting device, reducing its service life. To solve this problem, refer to the attached Figure 1 and 4, the present utility model proposes a lifting device for a drawer. The drawer includes a drawer bucket 10 located inside a box body 1 and a drawer door 20 arranged in the pulling-out direction of the drawer bucket 10; the lifting device includes:

[0051] A horizontal telescopic assembly 30, which is arranged inside the box body 1 and connected to the drawer door 20;

[0052] A lifting assembly 40, which contains a plurality of support rods. The lifting assembly 40 is hinged to the horizontal telescopic assembly 30, and the lifting assembly 40 is also hinged to the drawer bucket 10;

[0053] Wherein, when the horizontal telescopic assembly 30 drives the drawer door 20 to perform a horizontal telescopic movement, the horizontal telescopic assembly 30 also cooperates with the lifting assembly 40 to jointly drive the drawer bucket 10 to perform a lifting movement along a parabolic trajectory.

[0054] In this way, when the drawer needs to be lifted or lowered, the horizontal telescopic assembly 30 and the lifting assembly 40 cooperate to jointly drive the drawer bucket 10 to perform a lifting movement along a parabolic trajectory; and at the same time, the horizontal telescopic assembly 30 also drives the drawer door 20 to perform a horizontal telescopic movement. In this way, compared with vertical descent, the drawer bucket 10 moving along a parabolic trajectory during descent can slow down the descent speed, reduce the impact force generated during the descent process, and extend the service life of the lifting device or the drawer.

[0055] It should be noted that the box body 1 in this embodiment is preferably the box body of a freezer. In this way, when the drawer bucket 10 moves upward along a parabolic trajectory and reaches the fully opened state, the user can take the items in the drawer bucket 10 without bending down, greatly increasing the convenience of using the freezer.

[0056] When the drawer bucket 10 moves upward along a parabolic trajectory, the drawer door 20 will horizontally extend outward to be away from the freezer; when the drawer bucket 10 moves downward along a parabolic trajectory, the drawer door 20 will horizontally retract inward to be close to the freezer until it is reset.

[0057] Wherein, to ensure that the lifting device can drive the drawer bucket 10 to perform a lifting movement along a parabolic trajectory better and more stably, a lifting assembly 40 is respectively hinged on both sides of the drawer bucket 10. Each lifting assembly 40 is respectively hinged to a horizontal telescopic assembly 30, and each horizontal telescopic assembly 30 is also respectively used to be arranged on the inner side walls of the box body 1 corresponding to both sides of the drawer bucket 10.

[0058] Specifically, to ensure that the horizontal telescopic assembly 30 can stably drive the drawer door 20 to perform a horizontal telescopic movement, referring to the attached Figure 1-2 , this embodiment proposes a specific structure of the horizontal telescopic assembly 30:

[0059] The horizontal telescopic assembly 30 includes a drawer guide rail 301, a transmission gear 302, and a transmission rack 303;

[0060] On the inner side walls corresponding to both sides of the drawer bin 10 of the box body 1 and along the lifting direction of the drawer bin 10, two sets of transmission gears 302 are provided. Along the horizontal direction of the drawer door 20, at least two transmission gears 302 are provided for each set of transmission gears 302; between each set of transmission gears 302, a transmission rack 303 is sleeved and meshed. One end of each transmission rack 303 is meshed with one end of a drawer guide rail 301, and the other ends of all the drawer guide rails 301 are connected to the drawer door 20.

[0061] Among them, in each set of transmission gears 302 of this embodiment, two transmission gears 302 are provided along the horizontal direction of the drawer door 20. Of course, according to the actual situation, the number of transmission gears 302 in each set of transmission gears 302 can also be set to three or more, which is not limited here.

[0062] It should be noted that referring to the appendix Figure 2 , a plurality of teeth are evenly provided on the inner side of the transmission rack 303 facing the transmission gear 302, and each tooth can be meshed with the corresponding transmission gear 302 of the transmission rack 303.

[0063] In this way, when the user pulls the drawer door 20 outwards, the drawer door 20 drives the drawer guide rail 301 to move horizontally outwards. Then the drawer guide rail 301 drives the transmission rack 303 to rotate clockwise. Then the transmission rack 303 drives the corresponding two transmission gears 302 to rotate clockwise, so as to realize the horizontal extension movement of the drawer door 20, and the transmission gear 302 drives the lifting assembly 40 hinged thereto to swing. Further, the lifting assembly 40 drives the drawer bin 10 to move upwards along a parabolic trajectory.

[0064] Similarly, when the user needs to push the drawer bin 10 in the fully open state back into the box body 1, the drawer door 20 drives the drawer guide rail 301 to move horizontally inwards. Then the drawer guide rail 301 drives the transmission rack 303 to rotate counterclockwise. Then the transmission rack 303 drives the corresponding two transmission gears 302 to rotate counterclockwise, so as to realize the horizontal retraction movement of the drawer door 20, and the transmission gear 302 drives the lifting assembly 40 hinged thereto to swing. Further, the lifting assembly 40 drives the drawer bin 10 to move downwards along a parabolic trajectory.

[0065] Among them, to ensure that the drawer guide rail 301 can be stably meshed with the transmission rack 303, thereby improving the stability of the horizontal telescopic movement of the drawer door 20, referring to the appendix Figure 2 , one end of the drawer guide rail 301 on the same side of the drawer bin 10 is provided with a driving block 304 towards one side of the other drawer guide rail 301, and the driving block 304 is meshed with the transmission rack 303.

[0066] Specifically, the driving block 304 is provided with a plurality of teeth towards the transmission rack 303, so that the teeth on the driving block 304 can be meshed with the teeth on the transmission rack 303.

[0067] Specifically, to ensure that the lifting assembly 40 can stably drive the drawer basket 10 to move up and down along a parabolic trajectory, referring to the attached Figure 1 , the lifting assembly 40 is formed by connecting multiple support rods. Two support rods at one end of the lifting assembly 40 are respectively hinged to the transmission gears 302 on the same side of the drawer basket 10 and away from the drawer door 20; one support rod at the other end of the lifting assembly 40 is hinged to the drawer basket 10;

[0068] Among them, when the drawer basket 10 moves upward along a parabolic trajectory, the lifting assembly 40 is in an extended state; when the drawer basket 10 moves downward along a parabolic trajectory, the lifting assembly 40 is in a contracted state.

[0069] And this embodiment proposes a specific structure of the lifting assembly 40:

[0070] The lifting assembly 40 includes a first support rod 401, a second support rod 402, a third support rod 403, a fourth support rod 404, a fifth support rod 405, a sixth support rod 406, a seventh support rod 407, an eighth support rod 408, and a ninth support rod 409;

[0071] The transmission gears 302 in the lower group and away from the drawer door 20 are all hinged to one end of the first support rod 401, and the other end of the first support rod 401 is respectively hinged to one end of the third support rod 403, one end of the fourth support rod 404, and one end of the fifth support rod 405;

[0072] The transmission gears 302 in the upper group and away from the drawer door 20 are all hinged to one end of the second support rod 402, and the middle of the second support rod 402 is hinged to the other end of the third support rod 403; the other end of the second support rod 402 is respectively hinged to one end of the sixth support rod 406 and one end of the eighth support rod 408, and the other end of the eighth support rod 408 is hinged to the other end of the fourth support rod 404; the middle of the fifth support rod 405 and the middle of the sixth support rod 406 are hinged, the other end of the fifth support rod 405 is hinged to one end of the ninth support rod 409, the other end of the ninth support rod 409 is hinged to the middle of the seventh support rod 407, and one end of the seventh support rod 407 is hinged to the other end of the sixth support rod 406; the other end of the seventh support rod 407 is hinged to the side of the drawer basket 10 away from the drawer door 20.

[0073] It should be noted that the upper group of transmission gears 302 and the lower group of transmission gears 302 refer to the relative positional relationship of the two groups of transmission gears 302 on the same side of the drawer door 20.

[0074] In this way, when the user pulls the drawer door 20 outwards, the drawer door 20 drives the drawer guide rail 301 to move horizontally outwards. Then, the drawer guide rail 301 drives the transmission rack 303 to rotate clockwise. Then, the transmission rack 303 drives the corresponding two transmission gears 302 to rotate clockwise to achieve the horizontal extension movement of the drawer door 20. At the same time, a set of transmission gears 302 located on one side of the drawer bin 10 and below and away from the drawer door 20 drive the hinged first support rod 401 to swing clockwise. The first support rod 401 then drives the third support rod 403 to swing clockwise. Also, the second support rod 402 drives the fourth support rod 404 and the fifth support rod 405 to swing counterclockwise simultaneously. And the fifth support rod 405 drives the ninth support rod 409 to swing clockwise. At the same time, a set of transmission gears 302 located on one side of the drawer bin 10 and above and away from the drawer door 20 drive the hinged second support rod 402 to swing counterclockwise. The second support rod 402 then drives the sixth support rod 406 and the eighth support rod 408 to swing counterclockwise simultaneously. And the sixth support rod 406 drives the seventh support rod 407 to swing counterclockwise. Then, the seventh support rod 407 drives the drawer bin 10 to move upward along a parabolic trajectory until it is in a fully open state.

[0075] Similarly, when the drawer bin 10 is in a fully open state, the user needs to first push the drawer door 20 inwards. The drawer door 20 drives the drawer guide rail 301 to move horizontally inwards. Then, the drawer guide rail 301 drives the transmission rack 303 to rotate counterclockwise. Then, the transmission rack 303 drives the corresponding two transmission gears 302 to rotate counterclockwise to achieve the horizontal retraction movement of the drawer door 20. At the same time, a set of transmission gears 302 located on one side of the drawer bin 10 and below and away from the drawer door 20 drive the hinged first support rod 401 to swing counterclockwise. The first support rod 401 then drives the third support rod 403 to swing counterclockwise. Also, the second support rod 402 drives the fourth support rod 404 and the fifth support rod 405 to swing clockwise simultaneously. And the fifth support rod 405 drives the ninth support rod 409 to swing counterclockwise. At the same time, a set of transmission gears 302 located on one side of the drawer bin 10 and above and away from the drawer door 20 drive the hinged second support rod 402 to swing clockwise. The second support rod 402 then drives the sixth support rod 406 and the eighth support rod 408 to swing clockwise simultaneously. And the sixth support rod 406 drives the seventh support rod 407 to swing clockwise. Then, the seventh support rod 407 drives the drawer bin 10 to move downward along a parabolic trajectory until the drawer bin 10 is in a fully closed state.

[0076] In this way, through the cooperation of the multiple support rods in the lifting assembly 40 and the transmission gears 302 of the horizontal telescopic assembly 30, it is ensured that the multiple support rods in the lifting assembly 40 can stably drive the drawer bin 10 to move up and down along a parabolic trajectory.

[0077] It should be noted that in this text, "outward" indicates the direction in which the drawer bucket 10 moves away from the box body 1; "inward" indicates the direction in which the drawer bucket 10 moves closer to the box body 1.

[0078] Among them, referring to the attached Figure 1 , the length of the third support rod 403 is equal to the length of the eighth support rod 408, and the length of the fourth support rod 404 is half of the length of the second support rod 402.

[0079] When the drawer bucket 10 moves upward along a parabolic trajectory and is at the highest point, the second support rod 402, the third support rod 403, the fourth support rod 404, and the eighth support rod 408 can enclose a first parallelogram 410.

[0080] This can ensure that when the drawer bucket 10 moves upward along a parabolic trajectory and is at the highest point, that is, when the drawer bucket 10 is in a fully open state, the first parallelogram 410 formed by enclosing the second support rod 402, the third support rod 403, the fourth support rod 404, and the eighth support rod 408 can play a supporting role, so that the overall structure of the drawer remains stable and prevents deformation.

[0081] Among them, referring to the attached Figure 1 , the length of the fifth support rod 405 is equal to the length of the sixth support rod 406.

[0082] When the drawer bucket 10 moves upward along a parabolic trajectory and is at the highest point, that is, when the drawer bucket 10 is in a fully open state, the fifth support rod 405, the sixth support rod 406, the seventh support rod 407, and the ninth support rod 409 can enclose a second parallelogram 411.

[0083] This can further ensure that when the drawer bucket 10 moves upward along a parabolic trajectory and is at the highest point, that is, when the drawer bucket 10 is in a fully open state, the second parallelogram 411 formed by enclosing the fifth support rod 405, the sixth support rod 406, the seventh support rod 407, and the ninth support rod 409 can cooperate with the first parallelogram 410 to play a better supporting role, so as to further keep the overall structure of the drawer stable and prevent deformation.

[0084] Among them, to ensure the stability of the drawer bucket 10 when moving up and down along a parabolic trajectory, referring to the attached Figure 1 , the drawer further includes a balance assembly 50. The balance assembly 50 includes a first roller 501 provided at the bottom of the box body 1, a second roller 502 provided inside the drawer door 20, and a traction rope 503;

[0085] One end of the towing rope 503 is connected to the side of the drawer bucket 10 facing the drawer door 20, and then passes around the first roller 501 and the second roller 502 and is connected to the side of the drawer bucket 10 away from the drawer door 20, so that the drawer bucket 10 maintains balance during the lifting movement along the parabolic trajectory.

[0086] Specifically, a first connecting block 101 extends outward from the middle of the bottom of the side of the drawer bucket 10 away from the drawer door 20, and a second connecting block 102 extends outward from the middle of the bottom of the other side of the drawer bucket 10 facing the drawer door 20; a first roller 501 is provided in the middle of the inner side wall corresponding to the bottom of the drawer bucket 10 of the box body 1, and a second roller 502 is provided in the middle of the upper part of the drawer door 20 facing the drawer bucket 10, and the central points of the second roller 502, the first roller 501, the first connecting block 101 and the second connecting block 102 are all in the same plane; that is, any two of the central points of the first connecting block 101, the second connecting block 102, the second roller 502 and the first roller 501 are connected by a line, and they are all in the same plane.

[0087] The first connecting block 101 is connected to one end of the towing rope 503, and the other end of the towing rope 503 is wound around the first roller 501 and the second roller 502 in sequence and then connected to the second connecting block 102.

[0088] It should be noted that the first connecting block 101 and the second connecting block 102 are at the same height of the drawer bucket 10; the shapes of the first connecting block 101 and the second connecting block 102 are both circular rings; the first roller 501 and the second roller 502 can both rotate self - sufficiently.

[0089] And in actual situations, the towing rope 503 will inevitably come into contact with the first connecting block 101 and the second connecting block 102, and the circular - ring - shaped first connecting block 101 and second connecting block 102 can reduce the wear degree of the towing rope 503 and extend the service life of the towing rope 503.

[0090] In this way, when the drawer bucket 10 makes a lifting movement along the parabolic trajectory, the first roller 501, the second roller 502 and the towing rope 503 that make up the balance assembly 50 can ensure that the drawer bucket 10 will not tip over and ensure the stability of the lifting movement of the drawer bucket 10 along the parabolic trajectory.

[0091] Among them, referring to the appendix Figure 3 , the middle of the top of the drawer door 20 is recessed inward to form a hand - holding part 201, which is convenient for users to hold or pinch the hand - holding part 201 with their hands, and it is convenient for users to pull the drawer door 20 back and forth through the hand - holding part 201, thereby driving the horizontal telescopic assembly 30 and the lifting assembly 40, and enabling the horizontal telescopic assembly 30 and the lifting assembly 40 to cooperate with each other to jointly drive the drawer bucket 10 to make a lifting movement along the parabolic trajectory.

[0092] Embodiment 2

[0093] Referring to the attached Figure 5 , the present utility model also proposes a freezer, which includes a cabinet body 1, and a lifting device for the above-mentioned drawer is provided at the bottom of the cabinet body 1.

[0094] Among them, the freezer also includes a cabinet door 2 that is fitted and covered on the top of the cabinet body 1.

[0095] In this way, when the drawer is opened or closed by lifting, the horizontal telescopic component 30 cooperates with the lifting component 40 to jointly drive the drawer bucket 10 to move up and down along a parabolic trajectory; and at the same time, the horizontal telescopic component 30 also drives the drawer door 20 to perform a horizontal telescopic movement. In this way, compared with vertical descent, the downward movement of the drawer bucket 10 along a parabolic trajectory can slow down the descent speed, reduce the impact force generated during the descent process, and extend the service life of the lifting device, the drawer, or the freezer. And when the drawer bucket 10 moves up along a parabolic trajectory and reaches the fully opened state, the user can take the items in the drawer bucket 10 without bending down, greatly increasing the convenience of using the freezer.

[0096] The specific lifting process of the drawer in the freezer is as follows:

[0097] I. The drawer moves upward to the fully opened state (refer to the attached Figure 1 ):

[0098] First, when the user pulls the drawer door 20 outwards, the drawer door 20 drives the drawer guide rail 301 to move horizontally outwards. Then, the drawer guide rail 301 drives the transmission rack 303 to rotate clockwise, and then the transmission rack 303 drives the corresponding two transmission gears 302 to rotate clockwise to realize the horizontal extension movement of the drawer door 20. At the same time, a set of transmission gears 302 located on one side and below the drawer bucket 10 and away from the drawer door 20 drive the hinged first support rod 401 to swing clockwise. The first support rod 401 then drives the third support rod 403 to swing clockwise, and the second support rod 402 also drives the fourth support rod 404 and the fifth support rod 405 to swing counterclockwise at the same time, and the fifth support rod 405 drives the ninth support rod 409 to swing clockwise; at the same time, a set of transmission gears 302 located on one side and above the drawer bucket 10 and away from the drawer door 20 drive the hinged second support rod 402 to swing counterclockwise. The second support rod 402 then drives the sixth support rod 406 and the eighth support rod 408 to swing counterclockwise at the same time, and the sixth support rod 406 then drives the seventh support rod 407 to swing counterclockwise, and then the seventh support rod 407 drives the drawer bucket 10 to move up along a parabolic trajectory until it reaches the fully opened state.

[0099] II. The drawer moves downward to the fully closed state (refer to the attached Figure 4 ):

[0100] First, when the drawer bucket 10 is in a fully open state, the user needs to first push the drawer door 20 inward. The drawer door 20 drives the drawer guide rail 301 to move horizontally inward. Then, the drawer guide rail 301 drives the transmission rack 303 to rotate counterclockwise. Then, the transmission rack 303 drives the corresponding two transmission gears 302 to rotate counterclockwise to achieve the horizontal retraction movement of the drawer door 20. At the same time, a set of transmission gears 302 located on one side of the drawer bucket 10 and below and away from the drawer door 20 drives the articulated first support rod 401 to swing counterclockwise. The first support rod 401 drives the third support rod 403 to swing counterclockwise. And the second support rod 402 also drives the fourth support rod 404 and the fifth support rod 405 to swing clockwise together. And the fifth support rod 405 drives the ninth support rod 409 to swing counterclockwise. At the same time, a set of transmission gears 302 located on one side of the drawer bucket 10 and above and away from the drawer door 20 drives the articulated second support rod 402 to swing clockwise. The second support rod 402 drives the sixth support rod 406 and the eighth support rod 408 to swing clockwise together. And the sixth support rod 406 drives the seventh support rod 407 to swing clockwise. Then, the seventh support rod 407 drives the drawer bucket 10 to move downward along a parabolic trajectory until the drawer bucket 10 is in a fully closed state.

[0101] Obviously, the embodiments described above are only a part of the embodiments of the present invention, rather than all embodiments. The accompanying drawings show the preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structures made by using the specification and drawings of the present invention, directly or indirectly applied to other related technical fields, are equally within the scope of the patent protection of the present invention.

Claims

1. A drawer lifting device, the drawer comprising a drawer box (10) located in a box body (1) and a drawer door (20) arranged in the pull-out direction of the drawer box (10); characterized in that: The lifting device comprises: A horizontal telescopic assembly (30) is arranged in the box (1) and connected to the drawer door (20); A lifting assembly (40) comprising a plurality of support rods, wherein the lifting assembly (40) is hingedly connected to the horizontal telescopic assembly (30), and the lifting assembly (40) is also hingedly connected to the drawer (10); When the horizontal telescopic assembly (30) drives the drawer door (20) to perform horizontal telescopic movement, the horizontal telescopic assembly (30) also cooperates with the lifting assembly (40) to jointly drive the drawer box (10) to perform lifting movement along a parabolic trajectory.

2. The drawer lifting device according to claim 1, characterized in that: Lifting assemblies (40) are respectively hinged on both sides of the drawer (10), each lifting assembly (40) is respectively hinged to the horizontal telescopic assembly (30), and the horizontal telescopic assembly (30) is respectively arranged on the inner side walls of the box body (1) corresponding to both sides of the drawer (10).

3. The drawer lifting device according to claim 1 or 2, characterized in that: The horizontal telescopic assembly (30) comprises a drawer guide rail (301), a transmission gear (302) and a transmission rack (303); The box body (1) is provided with two sets of transmission gears (302) corresponding to the inner side walls on both sides of the drawer box (10) and along the lifting direction of the drawer box (10), and each set of the transmission gears (302) is provided with at least two transmission gears (302) along the horizontal direction of the drawer door (20); a transmission rack (303) is sleeved and meshed between each set of the transmission gears (302), and each of the transmission racks (303) is meshed with one end of the drawer guide rail (301), and the other ends of all the drawer guide rails (301) are connected to the drawer door (20).

4. The drawer lifting device according to claim 3, characterized in that: One end of the drawer guide rail (301) located on the same side of the drawer bucket (10) facing the side of the other drawer guide rail (301) is provided with a driving block (304), and the driving block (304) is meshed with the transmission rack (303).

5. The drawer lifting device according to claim 3, characterized in that: The lifting assembly (40) is formed by connecting a plurality of support rods, and two support rods at one end of the lifting assembly (40) are respectively hinged to a transmission gear (302) located on the same side of the drawer box (10) and away from the drawer door (20); a support rod at the other end of the lifting assembly (40) is hinged to the drawer box (10); When the drawer box (10) moves upward along a parabolic trajectory, the lifting assembly (40) is in an extended state; when the drawer box (10) moves downward along a parabolic trajectory, the lifting assembly (40) is in a contracted state.

6. The drawer lifting device according to claim 1 or 5, characterized in that: The lifting assembly (40) comprises: a first support rod (401), a second support rod (402), a third support rod (403), a fourth support rod (404), a fifth support rod (405), a sixth support rod (406), a seventh support rod (407), an eighth support rod (408) and a ninth support rod (409); A group of transmission gears (302) located at the bottom and away from the drawer door (20) are all hinged to one end of the first support rod (401), and the other end of the first support rod (401) is respectively hinged to one end of the third support rod (403), one end of the fourth support rod (404) and one end of the fifth support rod (405); A group of transmission gears (302) located above and away from the drawer door (20) are hinged to one end of the second support rod (402), and the middle part of the second support rod (402) is hinged to the other end of the third support rod (403); the other end of the second support rod (402) is hinged to one end of the sixth support rod (406) and one end of the eighth support rod (408), respectively, and the other end of the eighth support rod (408) is hinged to the other end of the fourth support rod (404); The middle part of the support rod (405) is hinged to the middle part of the sixth support rod (406), the other end of the fifth support rod (405) is hinged to one end of the ninth support rod (409), the other end of the ninth support rod (409) is hinged to the middle part of the seventh support rod (407), one end of the seventh support rod (407) is hinged to the other end of the sixth support rod (406); the other end of the seventh support rod (407) is hinged to a side of the drawer bucket (10) away from the drawer door (20).

7. The drawer lifting device according to claim 6, characterized in that: When the drawer (10) moves upward along a parabolic trajectory and is at the highest point, the second support rod (402), the third support rod (403), the fourth support rod (404) and the eighth support rod (408) can enclose and form a first parallelogram (410).

8. The drawer lifting device according to claim 6, characterized in that: When the drawer (10) moves upward along a parabolic trajectory and is at the highest point, the fifth support rod (405), the sixth support rod (406), the seventh support rod (407) and the ninth support rod (409) can enclose and form a second parallelogram (411).

9. The drawer lifting device according to claim 1, characterized in that: The drawer further comprises a balancing assembly (50), wherein the balancing assembly (50) comprises a first roller (501) arranged at the bottom of the box body (1), a second roller (502) arranged at the inner side of the drawer door (20), and a traction rope (503); One end of the traction rope (503) is connected to a side of the drawer bucket (10) facing the drawer door (20), and is wound around the first roller (501) and the second roller (502) and then connected to a side of the drawer bucket (10) away from the drawer door (20), so that the drawer bucket (10) maintains balance during the lifting and lowering movement along the parabolic trajectory.

10. A refrigerator, comprising a housing (1), characterized in that: The bottom of the box body (1) is provided with a drawer lifting device according to any one of claims 1 to 9.

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