Refrigerator

Abstract

The application relates to the technical field of refrigerators, and discloses a refrigerator which comprises a main door body, a sub-door body, a fixed shaft sleeve, a movable shaft sleeve and a hinge shaft. The main door body is used for closing or opening a storage cavity of the refrigerator, and the main door body is provided with a through access opening; the sub-door body is arranged at the access opening and used for closing or opening the access opening; the fixed shaft sleeve is embedded in the upper side wall of the sub-door body; the movable shaft sleeve is movably arranged in the fixed shaft sleeve and can move up and down in the fixed shaft sleeve; the hinge shaft is connected with the upper side wall of the main door body, and the lower end of the hinge shaft is inserted into the movable shaft sleeve; when the movable shaft sleeve moves upwards to a first position, the hinge shaft is locked with the movable shaft sleeve, and the hinge shaft and the movable shaft sleeve cannot rotate relative to each other; when the movable shaft sleeve moves downwards to a second position, the hinge shaft and the movable shaft sleeve can rotate relative to each other. In the application, the structure for locking the sub-door body can be simplified, and the cost is reduced.

Description

Technical Field

[0001] This application relates to the field of refrigerator technology, and more particularly to a refrigerator. Background Technology

[0002] Currently, most refrigerators use a single door. When opening the door to take out or put in items, the cooling space directly exchanges heat with the outside, which causes the temperature inside the refrigerator to rise rapidly and increases the refrigerator's energy consumption. For users, most of the time they open the door to take out small items such as cold drinks, which causes excessive cold air to leak out, resulting in a poor user experience. Therefore, refrigerators with a door-in-door design have become widely used.

[0003] One related technology includes a door-in-door refrigerator, comprising a large door and a small door formed on the large door. A through window is provided on the large door, and the small door is used to close or open the window. When small items need to be retrieved or placed, they can be retrieved or placed without opening the large door. The large door and the small door are connected by a hinge plate. A door lock is provided on the edge of the small door to lock it. The door lock consists of a latch and a bolt, which are respectively provided on the large door and the small door. The small door is locked when closed by the cooperation of the bolt and the latch.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] Locking the small door by setting up a door lock structure is complex, costly, and takes up too much space in the small door body. Summary of the Invention

[0006] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0007] This disclosure provides a refrigerator that reduces cold leakage from the secondary door seal, improves the sealing performance of the secondary door, simplifies the locking structure of the secondary door, and reduces costs.

[0008] In some embodiments, a refrigerator includes: a main door body, a secondary door body, a fixed bushing, a movable bushing, and a hinge shaft. The main door body is used to close or open the storage compartment of the refrigerator, and has a through-hole for taking in and removing items. The secondary door body is disposed at the take-in and remove hole and is used to close or open the take-in and remove hole. The fixed bushing is embedded in the upper side wall of the secondary door body. The movable bushing is movably disposed within the fixed bushing and is confined to move up and down within the fixed bushing. The hinge shaft is connected to the upper side wall of the main door body, and the lower end of the hinge shaft is inserted into the movable bushing. When the movable bushing moves upward to a first position, the hinge shaft and the movable bushing are locked, and the hinge shaft and the movable bushing cannot rotate relative to each other. When the movable bushing moves downward to a second position, the hinge shaft and the movable bushing can rotate relative to each other.

[0009] The refrigerator provided in this embodiment can achieve the following technical effects:

[0010] The secondary door is locked when closed using a hinge structure connecting the main door and the secondary door. A fixed bushing is installed on the upper side wall of the secondary door, and a movable bushing is installed inside the fixed bushing. The hinge shaft on the main door is inserted into the movable bushing. The locking of the secondary door is controlled by driving the movement of the movable bushing. When the secondary door needs to be locked in the closed state, the movable bushing is driven upward to the first position, where the hinge shaft and the movable bushing are locked, preventing relative rotation and improving the sealing of the secondary door. When the secondary door needs to be opened, the movable bushing is driven downward to the second position, where the hinge shaft and the movable bushing are unlocked, allowing relative rotation and the secondary door to open. This reduces cold leakage from the secondary door, improves its sealing performance, simplifies the locking structure, reduces costs, and minimizes the space occupied by the secondary door.

[0011] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0012] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0013] Figure 1 This is a schematic diagram of the structure of a refrigerator provided in an embodiment of this disclosure;

[0014] Figure 2 This is an embodiment of the present disclosure. Figure 1 Enlarged view of part A in the image;

[0015] Figure 3 This is a schematic diagram of the support arm provided in an embodiment of this disclosure;

[0016] Figure 4 This is a schematic diagram of the structure of the accommodating cavity provided in an embodiment of this disclosure;

[0017] Figure 5 This is a schematic diagram of the structure of another refrigerator provided in an embodiment of this disclosure;

[0018] Figure 6 This is an embodiment of the present disclosure. Figure 5 Enlarged view of part B in the image;

[0019] Figure 7 This is a schematic diagram of the structure of another refrigerator provided in an embodiment of this disclosure;

[0020] Figure 8 This is an embodiment of the present disclosure. Figure 7 Enlarged view of section C in the image;

[0021] Figure 9 This is a schematic diagram of the structure of another refrigerator provided in an embodiment of this disclosure.

[0022] Figure label:

[0023] 100. Main door body; 200. Secondary door body; 201. Drive handle; 202. Handle; 203. Support; 204. Through-hole; 205. Compression spring; 300. Fixed bushing; 301. Guide groove; 400. Movable bushing; 401. Rib; 402. Limiting groove; 500. Hinge shaft; 501. Limiting protrusion; 600. Support arm; 601. First arm; 602. Second arm; 603. Accommodating cavity; 604. First cavity; 605. Second cavity; 700. Hinge plate; 701. Support shaft; 800. First guide sleeve; 801. Limiting notch; 900. Second guide sleeve. Detailed Implementation

[0024] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0025] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0026] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0027] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0028] Unless otherwise stated, the term "multiple" means two or more.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0030] Combination Figure 1-9As shown, this embodiment of the present disclosure provides a refrigerator, including: a main door body 100, a secondary door body 200, a fixed bushing 300, a movable bushing 400, and a hinge shaft 500. The main door 100 is used to close or open the storage compartment of the refrigerator, and a through-hole is provided on the main door 100. The secondary door 200 is located at the through-hole and is used to close or open the through-hole. The fixed bushing 300 is embedded in the upper side wall of the secondary door 200. The movable bushing 400 is movably disposed within the fixed bushing 300 and is restricted to move up and down within the fixed bushing 300. The hinge shaft 500 is connected to the upper side wall of the main door 100, and the lower end of the hinge shaft 500 is inserted into the movable bushing 400. When the movable bushing 400 moves upward to the first position, the hinge shaft 500 and the movable bushing 400 are locked, and the hinge shaft 500 and the movable bushing 400 cannot rotate relative to each other. When the movable bushing 400 moves downward to the second position, the hinge shaft 500 and the movable bushing 400 can rotate relative to each other.

[0031] The refrigerator provided in this embodiment utilizes a hinge structure connecting the main door 100 and the secondary door 200 to achieve locking of the secondary door 200 when closed. A fixed bushing 300 is provided on the upper side wall of the secondary door 200, and a movable bushing 400 that can move up and down is provided inside the fixed bushing 300. The hinge shaft 500 on the main door 100 is inserted into the movable bushing 400. Locking of the secondary door 200 can be controlled by driving the movement of the movable bushing 400. When it is necessary to lock the secondary door 200 in the closed state, the movable bushing 400 is driven upward to a first position. At this time, the hinge shaft 500 and the movable bushing 400 are locked, preventing relative rotation between them, thereby improving the sealing performance of the secondary door 200. When the secondary door 200 needs to be opened from its closed state, the drive sleeve 400 is moved downward to the second position. At this time, the hinge shaft 500 and the sleeve 400 are unlocked, and they can rotate relative to each other. The secondary door 200 can then be rotated open. This reduces cold leakage from the secondary door 200's seal, improves the sealing performance of the secondary door 200, simplifies the locking structure of the secondary door 200, reduces costs, and minimizes the space occupied on the secondary door 200.

[0032] Optionally, such as Figure 2As shown, the inner ring wall of the fixed bushing 300 is provided with a vertical guide groove 301, and the outer peripheral wall of the movable bushing 400 is provided with a vertical protrusion 401 corresponding to the guide groove 301. The protrusion 401 is confined within the guide groove 301 for sliding. In this way, by confining the protrusion 401 on the movable bushing 400 to slide within the guide groove 301 on the fixed bushing 300, the movable bushing 400 can slide smoothly along the fixed bushing 300 to the first position or the second position, improving the stability of sliding. On the other hand, confining the protrusion 401 within the guide groove 301 restricts the rotation between the fixed bushing 300 and the movable bushing 400, preventing relative rotation between them. This avoids affecting the opening or closing of the secondary door 200 due to relative rotation between them, ensuring the stability of the secondary door 200 when opening or closing.

[0033] Optionally, multiple guide grooves 301 on the inner annular wall of the fixed bushing 300 and multiple ribs 401 on the outer peripheral wall of the movable bushing 400 are provided, with each rib 401 corresponding to each guide groove 301. Specifically, the guide grooves 301 and ribs 401 are provided in pairs, and the paired guide grooves 301 are symmetrical about the central axis of the fixed bushing 300, and the paired ribs 401 are symmetrical about the central axis of the movable bushing 400. In this way, by installing the paired ribs 401 in the paired guide grooves 301 respectively, it helps to further restrict the rotation between the fixed bushing 300 and the movable bushing 400, and also prevents the movable bushing 400 from shaking within the fixed bushing 300, further enhancing the stability of the secondary door 200 during the opening or closing process.

[0034] Optionally, the length of the guide groove 301 is the same as the axial length of the fixed bushing 300, and the length of the rib 401 is the same as the axial length of the movable bushing 400, wherein the axial length of the movable bushing 400 is greater than or equal to the axial length of the fixed bushing 300. This ensures that the movable bushing 400 always has a portion located within the fixed bushing 300, and the rib 401 of the movable bushing 400 always has a portion located within the guide groove 301. This prevents relative rotation between the fixed bushing 300 and the movable bushing 400 due to the rib 401 disengaging from the guide groove 301, thus better limiting relative rotation and ensuring the stability of the opening and closing process of the secondary door 200.

[0035] Optionally, such as Figure 2As shown, a limiting protrusion 501 is provided in the upper region of the outer peripheral wall of the hinge shaft 500, and a limiting groove 402 is provided in the inner ring wall of the movable bushing 400. When the movable bushing 400 moves upward to the first position, the limiting protrusion 501 is locked into the limiting groove 402 and is limited. When the movable bushing 400 moves downward to the second position, the limiting protrusion 501 is dislodged from the limiting groove 402. In this way, when the movable bushing 400 moves upward to the first position, the limiting protrusion 501 can be locked into the limiting groove 402 and thus the hinge shaft 500 and the movable bushing 400 are locked together. The two cannot rotate relative to each other, which helps to improve the sealing of the sub-door 200. This can reduce the increase in energy consumption caused by the leakage of cold air from the door gap and the condensation at the door gap. When the movable bushing 400 moves downward to the second position, the limiting protrusion 501 can be dislodged from the limiting groove 402. At this time, the hinge shaft 500 and the movable bushing 400 are unlocked, and the two can rotate relative to each other. The sub-door 200 can be rotated open, which simplifies the locking structure of the sub-door 200, reduces costs, and reduces the space occupied on the sub-door 200.

[0036] Optionally, multiple limiting protrusions 501 and limiting grooves 402 are provided, with each limiting protrusion 501 corresponding to each limiting groove 402. Specifically, the limiting protrusions 501 and limiting grooves 402 are provided in pairs, and the paired limiting protrusions 501 are symmetrical about the central axis of the hinge shaft 500, and the paired limiting grooves 402 are symmetrical about the central axis of the movable bushing 400. In this way, when the secondary door body 200 is in the closed state, the paired limiting protrusions 501 on the hinge shaft 500 can more stably restrict the movable bushing 400, allowing the secondary door body 200 to be better locked onto the main door body 100, improving the locking effect while ensuring the sealing of the secondary door body 200.

[0037] Optionally, the length of the limiting protrusion 501 is greater than or equal to one-fifth of the axial length of the hinge shaft 500 and less than or equal to two-fifths of the axial length of the hinge shaft 500. The length of the limiting groove 402 is greater than or equal to the length of the limiting protrusion 501. The axial length of the movable bushing 400 is greater than or equal to the axial length of the hinge shaft 500. This ensures that the length of the limiting protrusion 501 is within a reasonable range. When the secondary door 200 is closed, the limiting protrusion 501 can be completely contained within the limiting groove 402. This allows the limiting protrusion 501, fully contained within the limiting groove 402, to better restrict the rotation of the movable bushing 400. When the secondary door 200 needs to be opened, the limiting protrusion 501 can quickly slide out of the limiting groove 402, reducing the impact of the limiting protrusion 501 on the opening process of the secondary door 200.

[0038] Optionally, a flared structure is formed at the opening of the limiting groove 402. In this way, when the movable bushing 400 moves upward, the flared structure helps the limiting protrusion 501 to enter the limiting groove 402 more smoothly, which can avoid the limiting protrusion 501 from being misaligned when entering the limiting groove 402 and affecting the closing of the secondary door body 200, thus making the closing process of the secondary door body 200 smoother.

[0039] Optionally, such as Figure 3 As shown, the lower side wall of the fixed bushing 300 is provided with a through hole, and the lower end of the movable bushing 400 extends out of the through hole. A support arm 600 is provided below the through hole. The support arm 600 is connected to the lower end of the movable bushing 400. The support arm 600 can drive the movable bushing 400 to move up and down, so that the movable bushing 400 can switch between a first position and a second position. This facilitates the connection between the lower end of the movable bushing 400 and the support arm 600, allowing the support arm 600 to smoothly and steadily drive the movable bushing 400 to switch between the first and second positions, improving the stability of the movable bushing 400's up-and-down movement. Furthermore, when the movable bushing 400 is driven to move upward to close the secondary door 200, it ensures that the limiting protrusion 501 in the upper region of the hinge shaft 500 can enter the limiting groove 402 on the movable bushing 400, ensuring that the movable bushing 400 is in a locked state, preventing relative rotation between the movable bushing 400 and the hinge shaft 500, and ensuring the stability of the secondary door 200 when closed.

[0040] Optionally, such as Figure 4 As shown, the secondary door body 200 has a receiving cavity 603 inside, and the support arm 600 is movably disposed within the receiving cavity 603. The fixed bushing 300 is located above the receiving cavity 603. In this way, the support arm 600 can be hidden and installed inside the receiving cavity 603 inside the secondary door body 200, reducing the impact of the support arm 600 on the appearance of the secondary door body 200, giving the secondary door body 200 a better aesthetic appeal and enhancing the user's viewing experience. At the same time, the receiving cavity 603 provides installation space for the support arm 600 while restricting the movement of the support arm 600 within the receiving cavity 603, thereby ensuring that the support arm 600 can be well used to control the up and down movement of the movable bushing 400 and improving the stability of the support arm 600's drive.

[0041] Optionally, such as Figure 4As shown, the accommodating cavity 603 includes a first cavity 604 and a second cavity 605. The first cavity 604 is horizontally disposed below the fixed bushing 300; the second cavity 605 is vertically disposed below the fixed bushing 300, and the upper end of the second cavity 605 is connected to one end of the first cavity 604; the support arm 600 includes a first arm 601 and a second arm 602. The first arm 601 is horizontally disposed inside the first cavity 604, and one end of the first arm 601 is connected to the lower end of the movable bushing 400; the second arm 602 is vertically disposed inside the second cavity 605, and the upper end of the second arm 602 is connected to the other end of the first arm 601. The up-and-down movement of the second arm 602 can drive the first arm 601 to move up and down within the first cavity 604. This design allows users to easily control the support arm 600 from the lower end of the secondary door 200, driving the movable sleeve located at the top of the secondary door 200 to move up and down. This makes it easier for users to open and close the secondary door 200, improving ease of operation and meeting user needs. Furthermore, the first arm 601 is horizontally positioned inside the first cavity 604, and the second arm 602 is vertically positioned inside the second cavity 605. The up and down movement of the second arm 602 can drive the first arm 601 to move up and down within the first cavity 604, thereby allowing the first arm 601 to smoothly drive the movable sleeve 400 to move up and down, improving the stability of opening and closing the secondary door 200.

[0042] Optionally, the first arm 601 and the second arm 602 are integrally formed. This makes the support arm 600 formed by the first arm 601 and the second arm 602 structurally more stable, enhancing the overall stability of the support arm 600 and giving it better integrity. It also allows the first arm 601 and the second arm 602 to have more stable linkage, thereby driving the movable bushing 400 to move up and down better and more stably.

[0043] Optionally, such as Figure 5-6 As shown, a first guide sleeve 800 is provided on the lower side of the through hole. A limiting notch 801 is provided on the first guide sleeve 800. The portion connecting the lower end of the support arm 600 and the movable bushing 400 is located within the limiting notch 801. The first guide sleeve 800 is concentrically positioned with the through hole, and the support arm 600 is located directly below the movable bushing 400. Thus, by placing the support arm 600 within the limiting notch 801 of the first guide sleeve 800, the limiting notch 801 restricts the horizontal movement of the support arm 600, allowing it to move only vertically up and down. When the support arm 600 provides an upward thrust to the movable bushing 400, it can more smoothly drive the movable bushing 400 upward. It can reduce the friction between the movable bushing 400 and the fixed bushing 300, reduce the occurrence of wear on the movable bushing 400 or the fixed bushing 300 due to the movable bushing 400 tilting and sliding inside the fixed bushing 300, and help extend the service life of the movable bushing 400 or the fixed bushing 300.

[0044] Optionally, such as Figure 3 As shown, a second guide sleeve 900 is provided inside the second cavity 605, and the second arm 602 passes through the second guide sleeve 900. In this way, by passing the second arm 602 through the second guide sleeve 900, the second guide sleeve 900 can restrict the movement of the second arm 602, so that it can only move up and down in the vertical direction, thereby improving the stability of the second arm 602 during the upward movement.

[0045] Optionally, such as Figure 7-8 As shown, a drive handle 201 is provided on the front side wall of the secondary door 200. One end of the drive handle 201 extends into the second cavity 605 and is movably connected to the lower end of the second arm 602. Thus, by installing the drive handle 201 on the secondary door 200, it is more convenient and faster for the user to open or close the secondary door 200, improving operational ease and meeting user needs. Simultaneously, the user can manipulate the drive handle 201 to drive the second arm 602 to move stably up and down within the second cavity 605, improving drive stability and ensuring that the user can smoothly and stably open and close the secondary door 200.

[0046] Optionally, such as Figure 8 As shown, a handle 202 is provided on the front side wall of the secondary door body 200 corresponding to the position of the drive handle 201. There is an installation space between the handle 202 and the front side wall of the secondary door body 200. A support 203 is provided on the side wall of the handle 202 facing the installation space. The drive handle 201 is movably mounted on the support 203. The drive handle 201 can move towards or away from the handle 202. When the drive handle 201 moves towards the handle 202, the second arm 602 moves downward. When the drive handle 201 moves away from the handle 202, the second arm 602 moves upward. This allows the drive handle 201 to be mounted more stably and flexibly on the secondary door body 200, making it easier for the user to operate the drive handle 201 while holding the handle 202. When the user needs to open the secondary door body 200, the user's hand holding the handle 202 only needs to control the drive handle 201 to move towards the handle 202, and when the user needs to close the secondary door body 200, the user's hand holding the handle 202 only needs to control the drive handle 201 to move away from the handle 202. This makes the way to operate the drive handle 201 to open or close the secondary door body 200 simpler and easier to operate, improving the convenience of operation and meeting the user's needs while enhancing the user experience.

[0047] Optionally, the drive handle 201 has an inverted V-shaped structure, which is located on the secondary door body 200 at the through-hole 204. One side wall of the inverted V-shaped drive handle 201 passes through the through-hole 204 and movably abuts against the lower end of the second arm 602, while the other side wall is located within the installation space. The intersection of the two side walls of the drive handle 201 is rotatably connected to the support 203 via a pivot. In this way, when opening and closing the secondary door body 200, the user only needs to control the movement of the side wall of the drive handle 201 located within the installation space toward or away from the handle 202. This will cause the other side wall of the drive handle 201 located in the second cavity 605 to drive the support arm 600 to move up and down within the receiving cavity 603, thereby achieving the purpose of controlling the opening and closing of the secondary door body 200. This simplifies the operation, reduces the difficulty of operation, and makes it easier for users to open or close the secondary door body 200, improving operational convenience and providing a better user experience.

[0048] It is worth noting that, in order to enable the drive handle 201 to more stably control the up-and-down movement of the second arm 602, the portion of the drive handle 201 located within the second cavity 605 is always in contact with the lower end of the second arm 602. For example, when the secondary door 200 is closed, the lower end of the second arm 602 is in contact with the middle of the portion of the drive handle 201 located within the second cavity 605; while when the secondary door 200 is fully open, the lower end of the second arm 602 is in contact with the tail end of the portion of the drive handle 201 located within the second cavity 605. This avoids the situation where the drive handle 201 cannot stably drive the second arm 602 upward due to the drive handle 201 separating from the second arm 602 or abutting against the side wall of the second arm 602, thus ensuring the stability of the opening and closing process of the secondary door body 200. Of course, in order to achieve the above effect, an abutment plate perpendicular to the drive handle 201 can also be provided at the tail end of the part of the drive handle 201 located in the second cavity 605, and an upward abutment area is formed between the abutment plate and the drive handle 201, with the lower end of the second arm 602 located within the abutment area.

[0049] Optionally, such as Figure 8As shown, one end of the drive handle 201 located within the installation space is connected to the inner side of the handle 202 via a compression spring 205. The compression spring 205, located between the drive handle 201 and the handle 202, is always in a semi-compressed state. This semi-compressed state allows the compression spring 205 to consistently provide horizontal elasticity to the drive handle 201, ensuring the secondary door 200 is stably locked onto the main door 100. When the user needs to open the secondary door 200, simply pressing the drive handle 201 compresses the compression spring 205 again. This causes the drive handle 201 to move towards the handle 202, moving the second arm 602 downwards. This unlocks the hinge shaft 500 and the movable sleeve 400, allowing them to rotate relative to each other. The secondary door 200 can then be rotated open. Thus, the compression spring 205 neither obstructs the opening of the secondary door 200 nor hinders its locking stability, thus improving the sealing performance of the secondary door 200.

[0050] It can be understood that the semi-compression state of the compression spring 205 refers to half of the stroke of the compression spring 205 from its natural extension state to its maximum compression state.

[0051] It is worth noting that when closing the secondary door 200, the user presses the drive handle 201 to keep the compression spring 205 in the maximum compression state. After confirming that the secondary door 200 is completely closed, the user releases the drive handle 201. At this time, the elastic force of the compression spring 205 can quickly push the drive handle 201 to drive the support arm 600 to move upward, so that the limiting protrusion 501 can smoothly enter the limiting groove 402, and the secondary door 200 can be locked smoothly.

[0052] Combination Figure 9 As shown, in some embodiments, the lower sidewall of the main door 100 is provided with a hinge plate 700, the lower sidewall of the secondary door 200 is provided with a shaft hole, and the upper sidewall of the hinge plate 700 is provided with a support shaft 701. The support shaft 701 is inserted into the shaft hole and can rotate relative to the shaft hole. In this way, by rotatably inserting the support shaft 701 of the hinge plate 700 connected to the main door 100 into the shaft hole of the secondary door 200, the bottom of the secondary door 200 can be supported and fixed by the hinge plate 700 and the support shaft 701 thereon, and the movement of the bottom of the secondary door 200 can be restricted. This can prevent the bottom of the secondary door 200 from shifting or shaking during the opening and closing of the secondary door 200, thereby improving the stability of opening and closing the secondary door 200.

[0053] Optionally, the axes of the support shaft 701 and the hinge shaft 500 are located on the same vertical line. This makes the relative position between the support shaft 701 and the hinge shaft 500 more reasonable, which helps to reduce the impact of the support shaft 701 on the opening of the secondary door 200, avoids the support shaft 701 from obstructing the opening of the secondary door 200, and ensures the smoothness and stability of the opening process of the secondary door 200.

[0054] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A refrigerator, characterized in that, include: The main door (100) is used to close or open the storage compartment of the refrigerator, and the main door (100) is provided with a through-hole for taking out and putting in food. A secondary door body (200) is provided at the retrieval opening and is used to close or open the retrieval opening; A fixed bushing (300) is fitted into the upper side wall of the sub-door body (200); The movable bushing (400) is movably disposed within the fixed bushing (300) and is confined within the fixed bushing (300) to move up and down. A hinge shaft (500) is connected to the upper side wall of the main door body (100), and the lower end of the hinge shaft (500) is inserted into the movable bushing (400). When the movable bushing (400) moves upward to the first position, the hinge shaft (500) and the movable bushing (400) are locked together, and the hinge shaft (500) and the movable bushing (400) cannot rotate relative to each other. When the movable bushing (400) moves downward to the second position, the hinge shaft (500) and the movable bushing (400) can rotate relative to each other. The lower side wall of the fixed bushing (300) is provided with a through hole, and the lower end of the movable bushing (400) extends out of the through hole. A support arm (600) is provided below the through hole. The support arm (600) is connected to the lower end of the movable bushing (400). The support arm (600) can drive the movable bushing (400) to move up and down, so that the movable bushing (400) can switch between the first position and the second position. The sub-door body (200) is provided with a receiving cavity (603). The support arm (600) is movably disposed in the receiving cavity (603). The fixed bushing (300) is located above the receiving cavity (603). The receiving cavity (603) includes: a first cavity (604), which is horizontally disposed below the fixed bushing (300); and a second cavity (605), which is vertically disposed above the fixed bushing. Below (300), and the upper end of the second cavity (605) is connected to one end of the first cavity (604); the support arm (600) includes: a first arm (601), which is horizontally disposed inside the first cavity (604), and one end of the first arm (601) is connected to the lower end of the movable bushing (400); a second arm (602), which is vertically disposed inside the second cavity (605), and the upper end of the second arm (602) is connected to the other end of the first arm (601), and the first arm (601) can be driven to move up and down in the first cavity (604) by the up and down movement of the second arm (602); the front side wall of the sub-door body (200) is provided with a drive handle (201), and one end of the drive handle (201) extends into the second cavity (605) and is movably connected to the lower end of the second arm (602).

2. The refrigerator according to claim 1, characterized in that, The inner ring wall of the fixed bushing (300) is provided with a vertical guide groove (301), and the outer peripheral wall of the movable bushing (400) is provided with a vertical rib (401) corresponding to the position of the guide groove (301). The rib (401) is limited to sliding within the guide groove (301).

3. The refrigerator according to claim 1, characterized in that, The upper region of the outer peripheral wall of the hinge shaft (500) is provided with a limiting protrusion (501), and the inner ring wall of the movable bushing (400) is provided with a limiting groove (402). When the movable bushing (400) moves upward to the first position, the limiting protrusion (501) is inserted into the limiting groove (402) and limited. When the movable bushing (400) moves downward to the second position, the limiting protrusion (501) is dislodged from the limiting groove (402).

4. The refrigerator according to claim 1, characterized in that, The front side wall of the sub-door body (200) is provided with a handle (202) corresponding to the position of the drive handle (201). There is an installation space between the handle (202) and the front side wall of the sub-door body (200). The side wall of the handle (202) facing the installation space is provided with a support (203). The drive handle (201) is movably installed on the support (203). The drive handle (201) can move towards or away from the handle (202). When the drive handle (201) moves towards the handle (202), the second arm (602) moves downward. When the drive handle (201) moves away from the handle (202), the second arm (602) moves upward.

5. The refrigerator according to any one of claims 1 to 4, characterized in that, The lower side wall of the main door body (100) is provided with a hinge plate (700), the lower side wall of the secondary door body (200) is provided with a shaft hole, the upper side wall of the hinge plate (700) is provided with a support shaft (701), the support shaft (701) is inserted into the shaft hole and can rotate relative to the shaft hole.

6. The refrigerator according to claim 5, characterized in that, The axis of the support shaft (701) and the axis of the hinge shaft (500) are on the same vertical line.

Images