Refrigerator door body flatness adjusting device and refrigerator

Abstract

This utility model discloses a refrigerator door leveling adjustment device and a refrigerator, including a refrigerator door with a door end cover. At least one adjustment device is provided inside the door end cover. The adjustment device includes a power component, a bidirectional propulsion component, and an adjustment component installed inside the door end cover. The bidirectional propulsion component is drively connected to the power component and the adjustment component. One end of the power component extends out of the door end cover and is equipped with a knob. One end of the adjustment component extends out of the door end cover along the same axis and abuts against the corresponding refrigerator body. The power component drives the adjustment component to extend and retract towards the refrigerator body via the bidirectional propulsion component. This adjusts the distance between the refrigerator door and the refrigerator body, thereby adjusting the levelness of the refrigerator door and other refrigerator doors in the front-to-back direction. It is not only simple to operate and highly efficient, improving the user experience, but also occupies little space.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration technology, and in particular to a refrigerator door leveling adjustment device and a refrigerator. Background Technology

[0002] In existing refrigerators on the market, the refrigerator door is fixed to the refrigerator body only by hinges on both sides. The hinge axis on the hinge provides the axis of rotation for the door, and the closing of the door relative to the refrigerator body is controlled by the door seal on the door.

[0003] During the manufacturing process of refrigerators, due to the accumulation of tolerances of various parts, certain assembly errors during assembly, and deformation and twisting of the door body after transportation and clamping, the distance between some doors and the front surface of the refrigerator body may deviate significantly. This causes the plane on which the refrigerator door is located to be tilted relative to the front and back of the refrigerator body. This is especially true for multi-door refrigerators, such as side-by-side refrigerators, where the two doors are easily misaligned after assembly, particularly on the side opposite the refrigerator door hinges.

[0004] In existing technologies, adjustments are typically made to the door hinges to improve the unevenness of the door. However, this method is cumbersome, and disassembling and assembling the door requires specialized knowledge to avoid affecting the refrigerator's functionality. This is very inconvenient for users and reduces their user experience. Utility Model Content

[0005] This utility model provides a refrigerator door leveling adjustment device and a refrigerator, which solves the problem that the existing technology has a cumbersome adjustment method for adjusting the unevenness of the refrigerator door, resulting in a poor user experience.

[0006] The technical solution of this utility model is a refrigerator door leveling adjustment device, which includes a refrigerator door with a door end cover. At least one adjustment device is provided inside the door end cover. The adjustment device includes a power component, a bidirectional propulsion component and an adjustment component installed inside the door end cover.

[0007] A bidirectional propulsion component is connected between the power component and the adjustment component.

[0008] One end of the power assembly extends out of the door end cover and is equipped with a knob;

[0009] One end of the adjustment component extends out of the door end cover along the same axis and abuts against the corresponding refrigerator body;

[0010] The power component drives the adjustment component to extend and retract toward the refrigerator body via the bidirectional propulsion component.

[0011] Furthermore, the bidirectional propulsion assembly includes a gear component, a truncated conical cylindrical gear, and a conical pulley;

[0012] The gear component is mounted on the power assembly, and the gear component meshes with the truncated bevel gear;

[0013] The truncated conical cylindrical gear is slidably connected to a conical pulley on each of its two axial edges; the conical pulleys are all mounted on the adjusting assembly.

[0014] Furthermore, the truncated conical cylindrical gear includes a gear body, the gear body being inclined in opposite directions on both sides along its axial direction and arranged in a mirror symmetrical manner; the axial height of the gear body continuously changes along the circumference, forming a shrinking-increasing-shrinking or increasing-shrinking-increasing profile; the edges of both sides of the gear body along its axial direction are slidably connected to the sidewalls of the conical pulley respectively.

[0015] The outer side wall of the gear body is provided with teeth continuously in the circumferential direction in the middle, and the teeth mesh with the gear component.

[0016] Furthermore, the adjustment assembly includes a base and an adjustment rod;

[0017] The door end cover is provided with a base on the inner side wall facing the knob, and the base has a first limiting member extending outward along the axial direction and towards the knob, corresponding to the truncated conical cylindrical gear.

[0018] The adjusting rod passes through one end of the base along its length and is slidably connected to it. One end of the adjusting rod passes through the base, extends out of the door end cover, and abuts against the corresponding refrigerator body. The other end of the adjusting rod is connected to the inner wall of the door end cover away from the knob.

[0019] The adjusting rod extends outward along the axial direction of the truncated conical cylindrical gear and away from the knob, with a second limiting member. Both the second limiting member and the first limiting member are rotatably connected to a conical pulley.

[0020] Furthermore, the base extends outward axially toward the truncated conical cylindrical gear with a support rod, the support rod axially penetrating the central through hole of the truncated conical cylindrical gear, and a rotary mating interface is provided between the truncated conical cylindrical gear and the support rod to form a rotating pair.

[0021] Furthermore, the adjustment assembly also includes a first outer sleeve, which is disposed on the inner side wall of the door end cover away from the knob, and a first elastic body is fitted inside the first outer sleeve;

[0022] The adjusting rod has a connecting piece extending outward from the first outer sleeve, and the connecting piece extends into the first outer sleeve and connects to the first elastic body.

[0023] Furthermore, the base is provided with a receiving groove extending along the axial direction of the adjusting rod. A plurality of rolling elements are matched and installed between the bottom wall of the receiving groove and the corresponding adjusting rod. The rolling elements are in rolling contact with the bottom wall of the receiving groove and the surface of the adjusting rod.

[0024] Furthermore, the power assembly also includes a second outer sleeve, an outer rotating shaft, and an inner rotating shaft;

[0025] The second outer sleeve is disposed on the inner side wall of the door end cover away from the knob, and the bottom wall of the second outer sleeve away from the knob is provided with a groove;

[0026] The outer rotating shaft passes through the base and extends into and connects with the second outer sleeve. The outer side wall of the outer rotating shaft is provided with a gear component that meshes with the truncated conical cylindrical gear.

[0027] The inner rotating shaft passes through the outer rotating shaft axially and is fixedly connected to the outer rotating shaft; the end of the inner rotating shaft engages with the slot, and the beginning of the inner rotating shaft extends out of the door end cover and is connected to a knob.

[0028] Furthermore, an annular groove is formed circumferentially inside the outer rotating shaft that extends into the second outer sleeve, corresponding to the inner rotating shaft;

[0029] A flange is provided circumferentially in the middle of the outer wall of the inner rotating shaft that extends into the second outer sleeve; a second elastic body is nested in the inner rotating shaft between the flange and the side of the annular groove away from the slot.

[0030] This utility model also proposes a refrigerator, which includes the refrigerator door leveling adjustment device described above.

[0031] Compared with the prior art, the present invention has at least the following beneficial effects:

[0032] This invention uses a power component to drive a bidirectional propulsion component to rotate. The bidirectional propulsion component then drives an adjustment component to extend or retract into the refrigerator body (equivalent to forward and backward movement), thereby adjusting the distance between the refrigerator door and the refrigerator body. This adjusts the flatness of the refrigerator door and other refrigerator doors in the front-back direction. It is not only simple to operate and highly efficient, but also occupies little space. Furthermore, it eliminates market complaints caused by uneven refrigerator doors, improving product image and user experience. Simultaneously, the bidirectional propulsion component converts bidirectional input into unidirectional output, preventing overload and wear on one side of the components and improving operational tolerance. Attached Figure Description

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects and not to describe a particular order.

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a top view of a refrigerator according to the present invention;

[0036] Figure 2 for Figure 1 An enlarged schematic diagram of reference numeral A in the attached figure;

[0037] Figure 3 This is a schematic diagram of the adjusting rod of the adjusting device proposed in this utility model extending outwards;

[0038] Figure 4 This is a schematic diagram of the adjusting rod of the adjusting device proposed in this utility model retracting inward;

[0039] Figure 5 for Figure 4 A cross-sectional view along the AA direction;

[0040] Figure 6 for Figure 4 A cross-sectional view along the BB direction in the middle;

[0041] Figure 7 for Figure 4 Another sectional view along the BB direction;

[0042] Figure 8 This is an exploded view of the adjusting device proposed in this utility model;

[0043] Figure 9 This is a left view of a refrigerator according to the present invention.

[0044] Figure label:

[0045] 1. Refrigerator door;

[0046] 2. Door end cover;

[0047] 3. Adjustment device;

[0048] 31. Power assembly; 311. Knob; 312. Second outer sleeve; 3121. Slot; 313. Outer shaft; 3131. Annular groove; 3132. Limiting groove; 3133. Hexagonal through hole; 314. Inner shaft; 3141. Flange; 315. Second elastic body; 316. C-shaped fixing piece;

[0049] 32. Bidirectional propulsion assembly; 321. Gear component; 322. Frustoconical cylindrical gear; 3221. Gear body; 3222. Tooth portion; 3223. Central through hole; 323. Conical pulley;

[0050] 33. Adjustment component; 331. Base; 332. Adjustment rod; 333. First limiting member; 334. Second limiting member; 335. Support rod; 336. First outer sleeve; 337. First elastic body; 338. Connector; 339. Receiving groove; 340. Rolling element;

[0051] 4. Refrigerator body. Detailed Implementation

[0052] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present utility model, and does not imply that every embodiment of the present utility model must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0053] The principle and structure of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0054] In existing refrigerators, due to the accumulation of tolerances in various components during manufacturing, certain assembly errors during assembly, and deformation or twisting of the door body after transportation and clamping, the distance between some doors and the front surface of the refrigerator body may deviate significantly. This causes the plane of the refrigerator door to be tilted relative to the front and back of the refrigerator body. This is especially true for multi-door refrigerators, such as side-by-side refrigerators, where the two doors are easily misaligned after assembly, particularly on the side opposite the refrigerator door hinges.

[0055] In existing technologies, adjustments are typically made to the door hinges to improve the unevenness of the door. However, this method is cumbersome, and disassembling and assembling the door requires specialized knowledge to avoid affecting the refrigerator's functionality. This is very inconvenient for users and reduces their user experience.

[0056] Therefore, to address the problem of cumbersome adjustment methods and poor user experience associated with adjusting uneven refrigerator doors, in some embodiments, such as... Figures 1-3 As shown, this utility model proposes a refrigerator door flatness adjustment device, including a refrigerator door 1 with a door end cover 2, and at least one adjustment device 3 is provided in the door end cover 2. The adjustment device 3 includes a power component 31, a bidirectional propulsion component 32 and an adjustment component 33 installed in the door end cover 2.

[0057] A bidirectional propulsion component 32 is connected between the power component 31 and the adjustment component 33.

[0058] One end of the power assembly 31 extends out of the door end cover 2 and is provided with a knob 311;

[0059] The adjustment component 33 extends out of the door end cover 2 along the same axis and abuts against the corresponding refrigerator body 4;

[0060] The power component 31 drives the adjustment component 33 to extend and retract toward the refrigerator body 4 via the bidirectional propulsion component 32.

[0061] It should be noted that the refrigerator body 4 proposed in this embodiment has a front operating surface and a rear heat dissipation surface. The front operating surface is provided with a loading and unloading opening, and the refrigerator door 1 is rotatably connected to the front operating surface of the refrigerator body 4 via a hinge mechanism. Furthermore, the refrigerator door 1 proposed in this embodiment is the door of a multi-door refrigerator, and a multi-door refrigerator includes at least two refrigerator doors 1 arranged side by side. Additionally, the outer surface of the knob 311 proposed in this embodiment is provided with anti-slip textures to allow the user to better grip and rotate the knob 311.

[0062] In this way, when the user holds the knob 311 and turns it, the power component 31 drives the bidirectional propulsion component 32 to rotate. Then, the bidirectional propulsion component 32 drives the adjustment component 33 to extend or retract towards the refrigerator body 4 (equivalent to moving back and forth), thereby adjusting the distance between the refrigerator door 1 and the refrigerator body 4, thus adjusting the flatness of the refrigerator door 1 and other refrigerator doors 1 in the front-back direction. This not only makes the operation simple and the adjustment efficiency high, but also takes up little space for the adjustment device 3. It can also eliminate market complaints caused by uneven refrigerator door 1, improve the product image, and enhance the user experience. At the same time, the adjustment device 3, through the bidirectional propulsion component 32, can convert bidirectional input into unidirectional output, avoid overload wear of unilateral components, and improve operational fault tolerance.

[0063] Furthermore, the end of the adjustment component 33 extending out of the door end cover 2 and the knob 311 are both located on the side of the door end cover 2 facing the refrigerator body 4. When the refrigerator door 1 is closed relative to the refrigerator body 4, the end of the adjustment component 33 extending out of the door end cover 2 and the knob 311 are located between the refrigerator door 1 and the refrigerator body 4, thereby hiding the end of the adjustment component 33 extending out of the door end cover 2 and the knob 311, thus improving the aesthetics of the refrigerator door 1.

[0064] In some embodiments, to improve the transmission stability of the adjusting device 3 and improve the adjusting efficiency of the adjusting device 3, such as... Figure 3 As shown, the bidirectional propulsion assembly 32 includes a gear 321, a truncated conical cylindrical gear 322, and a conical pulley 323;

[0065] The gear component 321 is mounted on the power assembly 31, and the gear component 321 meshes with the truncated bevel gear 322;

[0066] The edges of the truncated conical cylindrical gear 322 along its axial direction are slidably connected to the conical pulleys 323 respectively; the conical pulleys 323 are all mounted on the adjusting assembly 33.

[0067] When the user holds the knob 311 and turns it, the gear 321 located on the outer wall of the power assembly 31 rotates accordingly. Then, the gear 321 drives the truncated conical cylindrical gear 322 to rotate. At the same time, the two conical pulleys 323 slide along the edges of the truncated conical cylindrical gear 322 on both sides of its axial direction, thereby causing the adjustment assembly 33 to extend or retract (equivalent to moving back and forth) towards the refrigerator body 4, thereby adjusting the distance between the refrigerator door 1 and the refrigerator body 4, and thus adjusting the flatness of the refrigerator door 1 and other refrigerator doors 1 in the front and back directions. This not only makes the operation simple and the adjustment efficiency high, but also makes the space occupied by the adjustment device 3 small.

[0068] Specifically, to ensure stable sliding between the truncated conical cylindrical gear 322 and the conical pulley 323, the adjusting assembly 33 is moved back and forth in the refrigerator body 4, such as... Figure 3 As shown, the truncated conical cylindrical gear 322 includes a gear body 3221. The gear body 3221 is inclined in opposite directions on both sides along its axial direction and is arranged in a mirror symmetrical manner. The axial height of the gear body 3221 changes continuously along the circumference, forming a shrinking-increasing-shrinking or increasing-shrinking-increasing profile. The edges of both sides of the gear body 3221 along its axial direction are slidably connected to the sidewalls of the conical pulley 323.

[0069] The gear body 3221 has teeth 3222 continuously arranged circumferentially in the middle of the outer side wall, and the teeth 3222 mesh with the gear component 321.

[0070] In this way, when the gear component 321 drives the gear body 3221 to rotate through the meshing of the teeth 3222, at the same time, the two conical pulleys 323 slide along the edges of the truncated conical cylindrical gear 322 on both sides of its axial direction. During the sliding process, due to the structure of the truncated conical cylindrical gear 322 itself, the distance between the two conical pulleys 323 will change from shrinking to increasing or increasing to shrinking, thereby causing the adjusting component 33 to move back and forth towards the refrigerator body 4, thereby adjusting the distance between the refrigerator door 1 and the refrigerator body 4, thereby adjusting the flatness of the refrigerator door 1 and other refrigerator doors 1 in the front and back direction.

[0071] Furthermore, due to the inherent structure of the truncated conical cylindrical gear 322, regardless of whether the gear component 321 drives the truncated conical cylindrical gear 322 to rotate clockwise or counterclockwise, the distance between the two conical pulleys 323 will change from decreasing to increasing or increasing to decreasing. This eliminates the risk of failure caused by misjudgment of direction, reduces the error rate caused by differences in operating habits, and improves operational fault tolerance. At the same time, the adjusting device 3, through the bidirectional propulsion component 32, can convert bidirectional input into unidirectional output, avoiding overload wear of unilateral components; moreover, one set of bidirectional propulsion components 32 can replace multiple sets of unidirectional propulsion structures, thereby improving the structural compactness of the adjusting device 3 and further reducing the footprint of the adjusting device 3.

[0072] In some embodiments, such as Figures 3-5 As shown, the adjustment assembly 33 includes a base 331 and an adjustment rod 332;

[0073] The door end cover 2 is provided with a base 331 on the inner side wall facing the knob 311. The base 331 has a first limiting member 333 extending outward along the axial direction and towards the knob 311 corresponding to the truncated conical cylindrical gear 322.

[0074] The adjusting rod 332 passes through one end of the base 331 along its length and is slidably connected to it. One end of the adjusting rod 332 passes through the base 331, extends out of the door end cover 2, and abuts against the corresponding refrigerator body 4. The other end of the adjusting rod 332 is connected to the inner wall of the door end cover 2 away from the knob 311.

[0075] The adjusting rod 332 extends outward along the axial direction of the truncated conical cylindrical gear 322 and on the side opposite to the knob 311, with a second limiting member 334. Both the second limiting member 334 and the first limiting member 333 are rotatably connected to a conical pulley 323.

[0076] It should be noted that the base 331 is bolted to the inner wall of the door end cover 2 facing the knob 311 by multiple bolts, and the ends of the bolts do not penetrate the door end cover 2.

[0077] Thus, when the user holds and rotates the knob 311, the gear 321 located on the outer wall of the power assembly 31 rotates accordingly. The gear 321 then drives the truncated conical gear 322 to rotate. Simultaneously, two conical pulleys 323 slide along the edges of the truncated conical gear 322 along its axial direction. During this sliding process, due to the structure of the truncated conical gear 322, the conical pulley 323 located on the second limiting member 334 will either move away from or towards the other conical pulley 323. If the conical pulley 323 on the second limiting member 334 moves away from the other conical pulley 323... The second limiting member 334 will cause the adjusting rod 332 to retract toward the door end cover 2 (equivalent to moving forward), thereby reducing the distance between the refrigerator door 1 and the refrigerator body 4. If the conical pulley 323 on the second limiting member 334 approaches another conical pulley 323, the second limiting member 334 will cause the adjusting rod 332 to extend toward the door end cover 2 (equivalent to moving backward), thereby increasing the distance between the refrigerator door 1 and the refrigerator body 4, and thus adjusting the flatness of the refrigerator door 1 and other refrigerator doors 1 in the front-back direction. This not only makes the operation simple and the adjustment efficiency high, but also makes the space occupied by the adjusting device 3 small.

[0078] Of course, due to the inherent structural limitations of the truncated conical cylindrical gear 322, the length of the adjusting component 33 extending out of the door end cover 2 (equivalent to the length of the adjusting rod 332 extending out of the door end cover 2, the same throughout the text) is limited. That is, when the two conical pulleys 323 reach the highest point of the axial height of the gear body 3221, the length of the adjusting rod 332 extending out of the door end cover 2 is at its maximum. If the gear body 3221 continues to rotate at this time, the axial height of the gear body 3221 between the two conical pulleys 323 will gradually decrease, thus causing the length of the adjusting rod 332 extending out of the door end cover 2 to gradually decrease as well, until the length of the adjusting rod 332 extending out of the door end cover 2 is at its minimum. When the two conical pulleys 323 reach the lowest point of the axial height of the gear body 3221, the length of the adjusting rod 332 extending out of the door end cover 2 is at its minimum. If the gear body 3221 continues to rotate at this time, the axial height of the gear body 3221 between the two conical pulleys 323 will gradually increase, thus causing the length of the adjusting rod 332 extending out of the door end cover 2 to gradually increase as well, until the length of the adjusting rod 332 extending out of the door end cover 2 is at its maximum.

[0079] In some embodiments, to ensure the transmission stability of the truncated bevel gear 322, such as Figure 8 As shown, the base 331 has a support rod 335 extending outward axially toward the truncated conical cylindrical gear 322. The support rod 335 axially passes through the central through hole 3223 of the truncated conical cylindrical gear 322, and a rotational mating interface is provided between the truncated conical cylindrical gear 322 and the support rod 335 to form a rotating pair.

[0080] It is understandable that the axial length of the support rod 335 is greater than the axial height (thickness) of the truncated bevel gear 322, and the support rod 335 is provided with axial limiting parts at both ends of the truncated bevel gear 322 along the axial direction to prevent the truncated bevel gear 322 from being displaced along the axial direction of the support rod 335 when it rotates relative to the support rod 335.

[0081] In some embodiments, such as Figure 5 As shown, the adjustment component 33 also includes a first outer sleeve 336, which is disposed on the inner side wall of the door end cover 2 away from the knob 311, and a first elastic body 337 is matched and installed inside the first outer sleeve 336.

[0082] The adjusting rod 332 has a connecting member 338 extending outward from the first outer sleeve 336. The connecting member 338 is inserted into the first outer sleeve 336 and connected to the first elastic body 337.

[0083] It should be noted that the first elastic body 337 proposed in this embodiment is preferably a compression spring.

[0084] In this way, when the adjusting rod 332 retracts towards the door end cover 2, the adjusting rod 332 will compress the first elastic body 337, causing the first elastic body 337 to undergo elastic deformation, thereby converting the kinetic energy of the adjusting rod 332 retraction into elastic potential energy, thereby reducing the vibration and noise generated by rigid collision and playing a buffering and shock absorption role; when the adjusting rod 332 extends towards the door end cover 2, the adjusting rod 332 will extend out of the door end cover 2 conveniently due to the elastic deformation of the first elastic body 337.

[0085] In some embodiments, to ensure the smooth forward and backward movement of the adjusting rod 332, such as Figure 5 As shown, the base 331 is provided with a receiving groove 339 extending axially along the adjusting rod 332. A plurality of rolling elements 340 are matched and installed between the bottom wall of the receiving groove 339 and the corresponding adjusting rod 332. The rolling elements 340 are in rolling contact with the bottom wall of the receiving groove 339 and the surface of the adjusting rod 332.

[0086] It should be noted that the rolling element 340 proposed in this embodiment is preferably a ball bearing, and the width of the receiving groove 339 is slightly larger than the width of one rolling element 340 so that the rolling element 340 can be placed in and roll; and the bottom wall of the receiving groove 339 is axially connected and filled with the rolling element 340, and the end of the rolling element 340 away from the bottom wall of the receiving groove 339 is in rolling contact with the corresponding adjusting rod 332.

[0087] In some embodiments, such as Figure 3 , Figures 6-7 As shown, the power assembly 31 also includes a second outer sleeve 312, an outer rotating shaft 313, and an inner rotating shaft 314;

[0088] The second outer sleeve 312 is disposed on the inner side wall of the door end cover 2 away from the knob 311, and the bottom wall of the second outer sleeve 312 away from the knob 311 is provided with a groove 3121;

[0089] The outer rotating shaft 313 passes through the base 331 and extends into the second outer sleeve 312 to form a connection. The outer side wall of the outer rotating shaft 313 is provided with the gear component 321 that meshes with the truncated conical cylindrical gear 322.

[0090] The inner rotating shaft 314 passes through the outer rotating shaft 313 axially and is fixedly connected to the outer rotating shaft 313; the end of the inner rotating shaft 314 is engaged with the slot 3121, and the beginning of the inner rotating shaft 314 extends out of the door end cover 2 and is connected to a knob 311.

[0091] It should be noted that a hexagonal through hole 3133 is provided axially inside the outer rotating shaft 313. The shape of the inner rotating shaft 314 corresponds to the hexagonal through hole 3133, preferably hexagonal. In this way, when the inner rotating shaft 314 passes through the outer rotating shaft 313 axially, the outer side wall of the inner rotating shaft 314 will be matched and inserted into the hexagonal through hole 3133, preventing the inner rotating shaft 314 from rotating relative to the outer rotating shaft 313. Furthermore, the gear component 321 is continuously arranged circumferentially along the middle of the outer side wall of the outer rotating shaft 313.

[0092] Thus, when the user holds the knob 311, they first pull out the inner rotating shaft 314 so that the end of the inner rotating shaft 314 disengages from the slot 3121, and then rotate the knob 311. This causes the knob 311 to drive the outer rotating shaft 313 to rotate via the inner rotating shaft 314, which in turn causes the gear 321 to rotate. The gear 321 then drives the truncated conical cylindrical gear 322 to rotate. Simultaneously, the two conical pulleys 323 slide along the edges of the truncated conical cylindrical gear 322 along its axial direction. During this sliding process, due to the structure of the truncated conical cylindrical gear 322, the conical pulley 323 located on the second limiting member 334 will move away from or towards the other conical pulley 323. If the conical pulley 323 located on the second limiting member 334 moves away from the other conical pulley 323, the second limiting member 334 will move away from or towards the other conical pulley 323. 34 will cause the adjusting rod 332 to retract towards the door end cover 2 (equivalent to moving forward), thereby reducing the distance between the refrigerator door 1 and the refrigerator body 4; if the conical pulley 323 on the second limiting member 334 approaches another conical pulley 323, the second limiting member 334 will cause the adjusting rod 332 to extend towards the door end cover 2 (equivalent to moving backward), thereby increasing the distance between the refrigerator door 1 and the refrigerator body 4. When the length of the extended adjusting rod 332 is adjusted to the preset length, the user first stops the knob 311 from rotating, and then inserts the end of the inner rotating shaft 314 into the slot 3121, thereby completing the adjustment process of the entire adjusting device 3; this not only adjusts the flatness of the refrigerator door 1 and other refrigerator doors 1 in the front and back directions, but also makes the operation simple, the adjustment efficiency high, and the space occupied by the adjusting device 3 small.

[0093] In some embodiments, to ensure stable rotation of the outer shaft 313 relative to the base 331, such as Figures 7-8 As shown, the outer rotating shaft 313 penetrates the top and bottom walls of the base 331 along the axial direction, and the outer rotating shaft 313 is provided with annular limiting grooves 3132 along the circumferential direction above the top wall and below the bottom wall of the base 331, respectively. C-shaped fixing pieces 316 are matched and installed in the limiting grooves 3132. The C-shaped fixing pieces 316 are located above the top wall and below the bottom wall of the base 331, respectively, and do not extend into the base 331, thereby preventing the outer rotating shaft 313 from rotating and restricting the radial displacement of the outer rotating shaft 313.

[0094] In some embodiments, to ensure that the inner rotating shaft 314 can automatically reset after being pulled out, and to simplify the operation, such as... Figure 7 As shown, an annular groove 3131 is formed in the circumferential direction inside the outer rotating shaft 313 that extends into the second outer sleeve 312, corresponding to the inner rotating shaft 314;

[0095] A flange 3141 is provided circumferentially in the middle of the outer wall of the inner rotating shaft 314 that extends into the second outer sleeve 312; a second elastic body 315 is nested in the inner rotating shaft 314 between the flange 3141 and the side of the annular groove 3131 away from the slot 3121.

[0096] It should be noted that the second elastic body 315 proposed in this embodiment is preferably a compression spring.

[0097] Thus, when the inner rotating shaft 314 is pulled outward so that its end disengages from the slot 3121, the distance between the flange 3141 and the side of the annular groove 3131 away from the slot 3121 will decrease, causing the second elastic body 315 to compress and undergo elastic deformation. If the user releases the knob 311, the inner rotating shaft 314 will automatically reset due to the elastic deformation of the second elastic body 315, thus eliminating the need for the user to spend time and effort matching and locking the end of the inner rotating shaft 314 into the slot 3121, further simplifying the operation of the adjustment device 3 and improving the user experience.

[0098] In some embodiments, such as Figure 9 As shown, this utility model also proposes a refrigerator, which includes the refrigerator door leveling adjustment device described above.

[0099] Thus, when the user holds the knob 311, they first pull out the inner rotating shaft 314 to disengage the end of the inner rotating shaft 314 from the slot 3121, and then rotate the knob 311. This allows the knob 311 to drive the outer rotating shaft 313 to rotate via the inner rotating shaft 314, thereby driving the gear 321 to rotate. The gear 321 then drives the truncated conical cylindrical gear 322 to rotate. Simultaneously, the two conical pulleys 323 slide along the edges of the truncated conical cylindrical gear 322 on both sides of its axial direction. During this sliding process, due to the structure of the truncated conical cylindrical gear 322, the conical pulley 323 located on the second limiting member 334 will move away from or closer to the other conical pulley 323. If the conical pulley 323 located on the second limiting member 334 moves away from the other conical pulley 323, the second limiting member 334 will drive the adjusting rod 332 to retract towards the door end cover 2 (equivalent to moving forward). The adjustment rod 332 extends towards the door end cover 2 (equivalent to moving backward) to reduce the distance between the refrigerator door 1 and the refrigerator body 4. If the conical pulley 323 on the second limiting member 334 approaches another conical pulley 323, the second limiting member 334 will drive the adjusting rod 332 to extend towards the door end cover 2 (equivalent to moving backward), thereby increasing the distance between the refrigerator door 1 and the refrigerator body 4. When the length of the adjusting rod 332 is adjusted to the preset length, the user first stops the knob 311 from rotating, and then inserts the end of the inner rotating shaft 314 into the slot 3121 to complete the adjustment process of the entire adjusting device 3. This not only adjusts the flatness of the refrigerator door 1 and other refrigerator doors 1 in the front and back directions, but also makes the operation simple, the adjustment efficiency high, and the space occupied by the adjusting device 3 small. It can also eliminate market complaints caused by uneven refrigerator door 1, improve the product image, and improve the user experience.

[0100] Furthermore, the end of the adjusting rod 332 extending out of the door end cover 2 and the knob 311 are both located on the side of the door end cover 2 facing the refrigerator body 4. In this way, when the refrigerator door 1 is closed relative to the refrigerator body 4, the end of the adjusting rod 332 extending out of the door end cover 2 and the knob 311 are both located between the refrigerator door 1 and the refrigerator body 4, thereby hiding the end of the adjusting rod 332 extending out of the door end cover 2 and the knob 311, thus improving the overall aesthetics of the refrigerator.

[0101] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A refrigerator door leveling adjustment device, comprising a refrigerator door (1) with a door end cover (2), characterized in that, The door end cover (2) is provided with at least one adjustment device (3), the adjustment device (3) including a power component (31), a bidirectional propulsion component (32) and an adjustment component (33) installed in the door end cover (2); A bidirectional propulsion component (32) is connected between the power component (31) and the adjustment component (33); One end of the power assembly (31) extends out of the door end cover (2) and is provided with a knob (311); The adjustment component (33) extends out of the door end cover (2) along the same axis and abuts against the corresponding refrigerator body (4); The power component (31) drives the adjustment component (33) to extend and retract toward the refrigerator body (4) via the bidirectional propulsion component (32).

2. The refrigerator door leveling adjustment device according to claim 1, characterized in that, The bidirectional propulsion assembly (32) includes a gear (321), a truncated bevel gear (322), and a conical pulley (323); The gear component (321) is mounted on the power assembly (31), and the gear component (321) meshes with the truncated bevel gear (322); The conical cylindrical gear (322) is slidably connected to a conical pulley (323) on both sides of its axial direction; the conical pulleys (323) are all mounted on the adjusting assembly (33).

3. The refrigerator door leveling adjustment device according to claim 2, characterized in that, The truncated conical cylindrical gear (322) includes a gear body (3221), which is inclined in opposite directions and arranged in a mirror symmetrical manner on both sides along its axial direction; the axial height of the gear body (3221) changes continuously along the circumference, forming a shrinking-increasing-shrinking or increasing-shrinking-increasing profile; the edges of both sides of the gear body (3221) along its axial direction are slidably connected to the sidewalls of the conical pulley (323); The outer side wall of the gear body (3221) is provided with teeth (3222) continuously in the circumferential direction in the middle part, and the teeth (3222) mesh with the gear component (321).

4. The refrigerator door leveling adjustment device according to claim 2, characterized in that, The adjustment assembly (33) includes a base (331) and an adjustment rod (332); The door end cover (2) is provided with a base (331) on the inner side wall facing the knob (311). The base (331) has a first limiting member (333) extending outward along the axial direction and towards the knob (311) corresponding to the truncated conical cylindrical gear (322). The adjusting rod (332) passes through one end of the base (331) along its length and is slidably connected to it. One end of the adjusting rod (332) passes through the base (331), extends out of the door end cover (2), and abuts against the corresponding refrigerator body (4). The other end of the adjusting rod (332) is connected to the inner wall of the door end cover (2) away from the knob (311). The adjusting rod (332) extends outward along the axial direction of the truncated conical cylindrical gear (322) and away from the knob (311) with a second limiting member (334). Both the second limiting member (334) and the first limiting member (333) are rotatably connected to a conical pulley (323).

5. The refrigerator door leveling adjustment device according to claim 4, characterized in that, The base (331) has a support rod (335) extending outward axially toward the truncated conical cylindrical gear (322). The support rod (335) axially passes through the central through hole (3223) of the truncated conical cylindrical gear (322), and a rotational mating interface is provided between the truncated conical cylindrical gear (322) and the support rod (335) to form a rotating pair.

6. The refrigerator door leveling adjustment device according to claim 4, characterized in that, The adjustment assembly (33) further includes a first outer sleeve (336), which is disposed on the inner side wall of the door end cover (2) away from the knob (311), and a first elastic body (337) is fitted inside the first outer sleeve (336). The adjusting rod (332) has a connecting member (338) extending outward from the first outer sleeve (336). The connecting member (338) is inserted into the first outer sleeve (336) and connected to the first elastic body (337).

7. The refrigerator door leveling adjustment device according to claim 4, characterized in that, The base (331) is provided with a receiving groove (339) extending axially along the adjusting rod (332). A plurality of rolling elements (340) are matched and installed between the bottom wall of the receiving groove (339) and the corresponding adjusting rod (332). The rolling elements (340) are in rolling contact with the bottom wall of the receiving groove (339) and the surface of the adjusting rod (332).

8. The refrigerator door leveling adjustment device according to claim 4, characterized in that, The power assembly (31) also includes a second outer sleeve (312), an outer rotating shaft (313), and an inner rotating shaft (314); The second outer sleeve (312) is disposed on the inner side wall of the door end cover (2) away from the knob (311), and the bottom wall of the second outer sleeve (312) away from the knob (311) is provided with a groove (3121); The outer rotating shaft (313) passes through the base (331) and extends into the second outer sleeve (312) and is connected to it. The outer side wall of the outer rotating shaft (313) is provided with the gear component (321) that meshes with the truncated conical cylindrical gear (322). The inner rotating shaft (314) passes through the outer rotating shaft (313) axially and is fixedly connected to the outer rotating shaft (313); the end of the inner rotating shaft (314) is engaged with the slot (3121), and the beginning of the inner rotating shaft (314) extends out of the door end cover (2) and is connected to a knob (311).

9. The refrigerator door leveling adjustment device according to claim 8, characterized in that, An annular groove (3131) is formed circumferentially inside the outer rotating shaft (313) that extends into the second outer sleeve (312) and corresponds to the inner rotating shaft (314); A flange (3141) is provided circumferentially in the middle of the outer wall of the inner rotating shaft (314) that extends into the second outer sleeve (312); a second elastic body (315) is nested in the inner rotating shaft (314) between the flange (3141) and the side of the annular groove (3131) away from the slot (3121).

10. A refrigerator, characterized in that, The refrigerator includes the refrigerator door leveling adjustment device as described in any one of claims 1 to 9.

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