Door opening device, refrigerator door assembly and refrigerator

Abstract

The invention discloses a door opening device, a refrigerator door assembly and a refrigerator. The door opening device comprises a rotating piece, a first connecting rod assembly and a second connecting rod assembly. One end of the first connecting rod assembly is switched between a first position and a second position relative to the rotating piece. The other end of the first connecting rod assembly is rotationally matched with a first door body of the door body assembly. One end of the second connecting rod assembly is switched between a third position and a fourth position relative to the rotating piece. And the other end of the second connecting rod assembly is rotationally matched with a second door body of the door body assembly. The rotating part is stressed to rotate so as to drive the first connecting rod assembly to be switched between the first position and the second position relative to the rotating part, and drive the second connecting rod assembly to be switched between the third position and the fourth position relative to the rotating part, so that the first door body and the second door body are synchronously opened or closed. According to the door opening device, labor can be saved, and a user can open the refrigerator door conveniently. Furthermore, synchronous door opening operation can be achieved, and using is more convenient.

Description

Technical Field

[0001] This application relates to the field of refrigerator doors, and more particularly to a door opening device, a door assembly, and a refrigerator. Background Technology

[0002] Currently, most refrigerator doors are still opened manually by the user. Many manufacturers install sealing strips on the refrigerator door to improve the seal between the door and the body. However, the resulting negative pressure requires considerable force to open the door, making it inconvenient to operate.

[0003] To improve the intelligence and ease of operation of refrigerator doors, electric door opening mechanisms are often adopted. However, current intelligent refrigerator door opening mechanisms control two separate electric components to independently open and close the two refrigerator doors. This requires complex computer programming to control the motors and makes it difficult to achieve synchronized door opening. Summary of the Invention

[0004] This application provides a door opening device, a door assembly, and a refrigerator. The door opening device provided by this application can save effort and make it easier for users to open the refrigerator door. Furthermore, it can realize simultaneous door opening operation, making it more convenient to use.

[0005] The technical solution is as follows:

[0006] According to a first aspect of the embodiments of this application, a door opening device is provided for opening a refrigerator door assembly, comprising: a rotating member, a first linkage assembly, and a second linkage assembly.

[0007] One end of the first linkage assembly slides with the rotating member, allowing it to switch between a first position and a second position relative to the rotating member. The other end of the first linkage assembly rotates with the first door body of the door assembly. When one end of the first linkage assembly is in the first position relative to the rotating member, it closes the first door body. When one end of the first linkage assembly is in the second position relative to the rotating member, it pulls or pushes the first door body inward, opening it.

[0008] One end of the second linkage assembly slides with the rotating member, allowing it to switch between a third and a fourth position relative to the rotating member. The other end of the second linkage assembly rotates with the second door of the door assembly. When one end of the second linkage assembly is in the third position relative to the rotating member, it closes the second door. When one end of the second linkage assembly is in the second position relative to the rotating member, it pulls or pushes the second door inward, opening the second door.

[0009] The rotating component rotates under force, thereby causing the first link assembly to switch between a first position and a second position relative to the rotating component, and causing the second link assembly to switch between a third position and a fourth position relative to the rotating component.

[0010] The technical solutions provided by the embodiments of this application may include the following beneficial effects:

[0011] When the rotating component is in a non-rotating state, one end of the first linkage assembly is in the first position, and one end of the second linkage assembly is in the third position, thus keeping both the first and second doors closed. To open the door assembly, simply rotate the rotating component. As the rotating component rotates, one end of the first linkage assembly slides from the first position to the second position, and the second linkage assembly slides from the third position to the fourth position. This causes the other end of the first linkage assembly to engage with the inward pulling or lifting mechanism of the first door, and the other end of the second linkage assembly to engage with the inward pulling or lifting mechanism of the second door, thereby opening both doors. This linkage assembly design saves the effort required to open the first and second doors, making it easier for the user to open them. Furthermore, the rotating component can convert the rotational motion of the first and second linkage assemblies into a sliding motion vector. Changes in the sliding motion of one end of each linkage assembly cause the other ends of both linkage assemblies to engage with the opening and closing mechanism of the door assembly, achieving synchronous door opening and closing.

[0012] The technical solution will be further explained below:

[0013] In one embodiment, the rotating member includes a mounting body.

[0014] The mounting body and the first linkage assembly each have a first slide rail and a first sliding part. The first sliding part slides in conjunction with the first slide rail to switch between a first position and a second position relative to the first slide rail.

[0015] And / or, one of the mounting body and the second linkage assembly is provided with a second slide rail, and the other is provided with a second sliding part. The second sliding part slides in conjunction with the second slide rail, so that the second sliding part switches between a third position and a fourth position relative to the second slide rail.

[0016] In one embodiment, the rotating component further includes a pivot. The mounting body is rotatably mounted on the refrigerator's housing assembly via the pivot. A first slide rail and a second slide rail are symmetrically arranged on the mounting body with respect to the pivot.

[0017] In one embodiment, the first linkage assembly includes a first link, a second link, and a third link. One end of the first link has a first sliding portion, and the other end is movably engaged with one end of the second link. One end of the third link is rotatably connected to one end of the second link, and the other end is rotatably engaged with the first door body. When the first sliding portion switches from a first position to a second position, the first link moves relative to the second link, causing the second link to pull the other end of the third link inward or push it outward from one side of the first door body, thus opening the other side of the first door body outward.

[0018] In one embodiment, the other end of the first link is slidably engaged with one end of the second link, such that when the first sliding part switches from the first position to the second position, the first link slides from the fifth position to the sixth position relative to the second link, so that the second link drives one end of the third link to pull inward or push out to one side of the first door, and the other side of the first door is pushed outward to open.

[0019] In one embodiment, the first linkage assembly further includes a first gear assembly rotatably disposed on the second linkage. The first linkage has a first tooth that meshes with the first gear assembly. Through a locking engagement between the first gear assembly and the first tooth, when the first sliding part switches from a first position to a second position, the first linkage and the first gear assembly are locked together, causing the first linkage to drive one end of the third linkage via the second linkage to lift the first door, thereby opening the first door.

[0020] In one embodiment, the first gear assembly includes a first gear and a second gear that meshes with and drives the first gear. The first gear is fixedly connected to a second connecting rod, and the second gear meshes with a first tooth portion. Specifically, when the first sliding portion is in a first position, the second gear is locked in engagement with the first tooth portion. When the first sliding portion is in a second position, the first connecting rod drives the first tooth portion to rotate, causing the first tooth portion to rotate and engage with and lock with the first and second gears.

[0021] In one embodiment, the second linkage assembly includes a fourth link, a fifth link, and a sixth link. One end of the fourth link has a second sliding portion, and the other end is movably engaged with one end of the fifth link. One end of the sixth link is rotatably connected to one end of the fifth link, and the other end is rotatably engaged with the second door body. When the second sliding portion switches from a third position to a fourth position, the fourth link moves relative to the fifth link, causing the fifth link to drive the other end of the sixth link to abut and open the second door body.

[0022] In one embodiment, the second linkage assembly further includes a third gear fixed to one end of the fifth linkage. The fourth linkage has a second tooth that meshes with the third gear. The engagement and locking of the second tooth with the third gear allows the fourth and fifth linkages to rotate, thereby causing the other end of the sixth linkage to abut and open the second door.

[0023] In one embodiment, the door opening device further includes a power mechanism. The power mechanism includes a transmission component and a power source. The power source drives the transmission component to rotate. The transmission component rotates in conjunction with the rotating component.

[0024] In one embodiment, the door opening device further includes a power mechanism. The power mechanism includes a transmission component and a power source. The power source drives the transmission component to rotate. The transmission component rotates in conjunction with the rotating component.

[0025] In one embodiment, the rotating member is provided with a meshing portion, and the transmission member is connected to the rotating member for rotational transmission through the meshing portion. The meshing portion is located on the periphery of the rotating member.

[0026] In one embodiment, the door opening device further includes an auxiliary ejection assembly, which includes an ejection state that engages with at least one of the first door and the second door, and a separation state that is spaced apart from the first door and the second door. The auxiliary ejection assembly is fixedly connected to a rotating member so that rotation of the rotating member causes the auxiliary ejection assembly to switch between the ejection state and the separation state.

[0027] In one embodiment, the auxiliary ejection assembly includes a first protrusion and an ejector. The first protrusion is disposed on the rotating member so that the rotating member rotates to drive the first protrusion to eject the ejector. The ejector is disposed correspondingly to the first door body and / or the second door body so as to eject and cooperate with the first door body and / or the second door body.

[0028] In one embodiment, the ejector includes a first body and a second body that is movably engaged with the first body. The second body is used to eject the first protrusion. The auxiliary ejection assembly further includes an elastic component. The elastic component is disposed between the first and second bodies to cause the first protrusion to press against the second body. The second body presses against the first body via the elastic component.

[0029] In one embodiment, the elastic component includes at least two elastic elements. The second body includes a first support and a second support protruding from the first support. The at least two elastic elements include a first elastic element and a second elastic element. The first and second elastic elements are respectively disposed opposite to each other on both sides of the second support. The first and second elastic elements are sandwiched between the first support and the first body.

[0030] In one embodiment, the second body has a first mating surface and a second mating surface bent and connected to the first mating surface on the side away from the first protrusion. The first mating surface is provided corresponding to the first door body. The second mating surface is provided corresponding to the second door body. When the rotating member pushes out of the second body, the first mating surface engages with the first door body.

[0031] According to a second aspect of the embodiments of this application, a door assembly is provided for cooperating with a refrigerator body assembly, including a door assembly and an opening device as described in the above embodiments. The door assembly is hinged to the body assembly via the opening device for opening and closing.

[0032] The technical solutions provided by the embodiments of this application may include the following beneficial effects:

[0033] By setting the door opening device in the above embodiments, the first and second doors of the door assembly can be opened synchronously, which is more labor-saving and convenient for users to operate.

[0034] According to a third aspect of the embodiments of this application, a refrigerator is provided, including a cabinet assembly and a door assembly as described in the above embodiments. The door assembly is hinged to the cabinet assembly.

[0035] The technical solutions provided by the embodiments of this application may include the following beneficial effects:

[0036] The door assembly in the above embodiments allows for simultaneous opening, requires less effort, and is easier for users to operate, thus enhancing the refrigerator's market competitiveness.

[0037] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0038] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0039] Figure 1 This is a schematic diagram of the structure of a refrigerator in one embodiment.

[0040] Figure 2 for Figure 1 The top view shown.

[0041] Figure 3 for Figure 2 The diagram shows a schematic representation of the door opening device in one embodiment.

[0042] Figure 4 for Figure 2 A schematic diagram of the door opening device in another embodiment is shown.

[0043] Figure 5 for Figure 3 The diagram shows the structure of the first link assembly.

[0044] Figure 6 for Figure 3 The diagram shows the structure of the second link assembly.

[0045] Figure 7 for Figure 2 The diagram shows a schematic of the mounting structure of the auxiliary ejection component in one embodiment.

[0046] Figure 8 for Figure 7 The diagram shows the cooperative structure of the rotating component and the auxiliary ejection assembly.

[0047] Figure 9 for Figure 7 The diagram shows the cooperative structure of the auxiliary ejection assembly and the door assembly. Attached image description:

[0049] 1. Refrigerator; 10. Door assembly; 100. Door opening device; 110. Rotating component; 111. Mounting body; 112. First slide rail; 113. Second slide rail; 114. Rotating shaft; 120. First connecting rod assembly; 121. First sliding part; 122. First connecting rod; 123. Second connecting rod; 124. Third connecting rod; 125. First gear assembly; 1251. First gear; 1252. Second gear; 130. Second connecting rod assembly; 131. Second sliding part; 132. Fourth connecting rod; 133. Fifth connecting rod; 134. Sixth connecting rod; 135. Third gear ; 140, Power mechanism; 141, Transmission component; 1411, Engaging part; 142, Power source; 150, Auxiliary ejection assembly; 151, First protrusion; 152, Ejector; 1521, First body; 1522, Second body; 15221, First support body; 15222, Second support body; 1522a, First mating surface; 1522b, Second mating surface; 1523, Elastic component; 15231, First elastic element; 15232, Second elastic element; 200, Door assembly; 210, First door body; 220, Second door body; 20, Box assembly. Detailed Implementation

[0050] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0051] Currently, in the field of smart refrigerator door production, most technologies use two motors to open the two refrigerator doors from both sides. This setup requires at least two motors, and the motors need to be controlled synchronously to achieve the effect of synchronous door opening. This increases the cost of setup and the control calculation program, which is not conducive to reducing costs and optimizing the user experience of opening the refrigerator door.

[0052] Based on this, this application provides a refrigerator 1, such as Figure 1 As shown, it includes a door assembly 10 and a housing assembly 20. The door assembly 10 is hinged to the housing assembly 20.

[0053] Among them, such as Figure 2 As shown, the door assembly 10 includes an opening device 100 and a door assembly 200. The door assembly 200 is hinged to the door assembly 200 via the opening device 100.

[0054] Specifically, the door opening device 100 includes a rotating member 110, a first linkage assembly 120, and a second linkage assembly 130.

[0055] One end of the first linkage assembly 120 is slidably engaged with the rotating member 110, allowing the first end of the first linkage assembly 120 to switch between a first position and a second position relative to the rotating member 110. The other end of the first linkage assembly 120 is rotatably engaged with the first door body 210 of the door body assembly 200. When one end of the first linkage assembly 120 is in the first position relative to the rotating member 110, the other end of the first linkage assembly 120 drives the first door body 210 to close. When one end of the first linkage assembly 120 is in the second position relative to the rotating member 110, the other end of the first linkage assembly 120 engages with the first door body 210 to pull inward or push out, causing the first door body 210 to open.

[0056] One end of the second linkage assembly 130 is slidably engaged with the rotating member 110, allowing the second linkage assembly 130 to switch between a third position and a fourth position relative to the rotating member 110. The other end of the second linkage assembly 130 is rotatably engaged with the second door 220 of the door assembly 200. When one end of the second linkage assembly 130 is in the third position relative to the rotating member 110, the other end of the second linkage assembly 130 drives the second door 220 to close. When one end of the second linkage assembly 130 is in the second position relative to the rotating member 110, the other end of the second linkage assembly 130 engages with the second door 220 inward or outward, causing the second door 220 to open.

[0057] The rotating member 110 is rotated under force to drive the first link assembly 120 to switch between a first position and a second position relative to the rotating member 110, and to drive the second link assembly 130 to switch between a third position and a fourth position relative to the rotating member 110.

[0058] It should be noted that the engagement method between the first link assembly 120 and the first door 210 can be either by lifting to open the first door 210 or by pulling inward to push out the first door 210, which can be determined by the engagement position of the first link assembly 120 and the first door 210. Similarly, the engagement method between the second link assembly 130 and the second door 220 can be either by lifting to open the second door 220 or by pulling inward to push out the second door 220, which can be determined by the engagement position of the second link assembly 130 and the second door 220.

[0059] In one specific embodiment, the first door 210 and the second door 220 are hinged to the housing assembly 20 via hinges. It should be noted that the hinges can be located on one side of the first door 210 and the second door 220, or they can be embedded within the first door 210 and the second door 220. In one example, the hinges are located on one side of the first door 210 and the second door 220. In this case, the other end of the first linkage assembly 120 can be located at any position on the first door 210, and the other end of the first linkage assembly 120 is rotatably engaged with the first door 210. When one end of the first linkage assembly 120 switches between the first position and the second position, it drives the other end of the first linkage assembly 120 to push out and engage with the first door 210, thereby controlling the opening and closing of the first door 210. Similarly, the other end of the second linkage assembly 130 can be located at any position on the second door 220, and the other end of the second linkage assembly 130 is rotatably engaged with the second door 220. When one end of the second linkage assembly 130 switches between the third and fourth positions, it drives the other end of the second linkage assembly 130 to push out and cooperate with the second door 220, thereby realizing the opening and closing control of the second door 220.

[0060] In another example, hinges are disposed at the ends of the first door body 210 and the second door body 220, making the first door body 210 and the second door body 220 equivalent to lever assemblies. In this case, when one end of the first linkage assembly 120 switches between the first position and the second position, the other end of the first linkage assembly 120 engages with one side of the first door body 210 inward, causing the other side of the first door body 210 to push outward. When one end of the second linkage assembly 130 switches between the third position and the fourth position, the other end of the second linkage assembly 130 engages with one side of the second door body 220 inward, causing the other side of the second door body 220 to push outward.

[0061] Specifically, the following is a usage description with reference to an embodiment:

[0062] Understandably, when the rotating component 110 is in a non-rotating state, one end of the first linkage assembly 120 is in the first position, and one end of the second linkage assembly 130 is in the third position, thus keeping both the first door 210 and the second door 220 closed. To open the door assembly 200, simply rotate the rotating component 110. This can be achieved by, but is not limited to, manually rotating the rotating component 110, using a motor to rotate the rotating component 110, directly opening the first door 210 and the second door 220, or any combination thereof. Taking the direct opening of one side of the first door 210 as an example, when the first door 210 is opened, one end of the first linkage assembly 120 slides from the first position to the second position, thereby causing the rotating member 110 to have a rotational displacement. This causes the rotating member 110 to slide from the third position to the fourth position relative to the second linkage assembly 130, so that the second door 220, which is rotatably connected to the other end of the second linkage assembly 130, is pulled synchronously. The second door 220 is equivalent to a lever. When one side of the second door 220 is pulled inward, the other side of the second door 220 will rotate outward and open synchronously, thus realizing the opening of the second door 220. Similarly, when the rotating member 110 is rotated directly by the operating component, the rotating member 110 can rotate relative to the first link assembly 120 and the second link assembly 130. This causes the first link assembly 120 to have a sliding vector, allowing it to slide from the first position to the second position. As a result, one side of the first door 210 is pulled inward. At this time, the first door 210 is equivalent to a lever, causing the other side of the first door 210 to rotate outward, thereby opening the first door 210. At the same time, the second link assembly 130 has a sliding vector, allowing it to slide from the third position to the fourth position. This causes one side of the second door 220 to be pulled inward, causing the other side of the first door 210 to rotate outward, thereby opening the second door 220.

[0063] Thus, through the configuration of the door opening device 100 in the above embodiments, the opening force of the first door 210 and the second door 220 can be reduced by the linkage assembly, making it easier for the user to open the door assembly 200. Furthermore, the rotating member 110 can drive the first linkage assembly 120 and the second linkage assembly 130 to convert rotational motion into sliding motion vectors. This causes a change in the sliding motion at one end of the first linkage assembly 120 and the second linkage assembly 130, which in turn changes the ejection position at the other end of the first linkage assembly 120 and the second linkage assembly 130, thereby coordinating the opening and closing of the first door 210 and the second door 220 to achieve synchronous door opening.

[0064] It should be noted that the sliding fit between one end of the first link assembly 120 and the second link assembly 130 and the rotating member 110 can be achieved by means of slide rail, spring extension or combination thereof, and no further restrictions are imposed here.

[0065] In one embodiment, such as Figure 3 As shown, the rotating component 110 includes a mounting body 111. In one specific embodiment, one of the mounting body 111 and the first linkage assembly 120 is provided with a first slide rail 112, and the other is provided with a first sliding portion 121. The first sliding portion 121 is slidably engaged with the first slide rail 112, so that the first sliding portion 121 switches between a first position and a second position relative to the first slide rail 112. It can be understood that the switching between the first position and the second position is controlled by the length of the first slide rail 112. That is, when one end of the first linkage assembly 120 abuts against one end of the first slide rail 112, the first linkage assembly 120 is in the first position, and the other end of the first linkage assembly 120 does not push up the first door body 210. When one end of the first linkage assembly 120 abuts against the other end of the first slide rail 112, the first linkage assembly 120 is in the second position. At this time, due to the sliding of one end of the first linkage assembly 120, the other end of the first linkage assembly 120 is pulled inward or lifted to one side of the first door 210, causing the other side of the first door 210 to rotate outward and open. Thus, the sliding engagement via the slide rail enables precise positioning and is easy to set, providing excellent and accurate positioning, which helps improve the stability of the opening movement of the first door 210 and the second door 220.

[0066] In another specific embodiment, a first spring is provided between the mounting body 111 and the first linkage assembly 120 to achieve switching between a first position and a second position. Specifically, it can be understood that when one end of the first linkage assembly 120 is in the first position, the first spring is in a first extension state (such as the original length state or the extension amount is the first extension amount), and the other end of the first linkage assembly 120 is not engaged with the first door body 210. When one end of the first linkage assembly 120 is in the second position, the first spring is in a second extension state (the extension amount is the second extension amount, where the extension amount of the second extension amount can be greater than the extension amount of the first extension amount and the extension amount of the original length state), and the other end of the first linkage assembly 120 pulls inward or lifts one side of the first door body 210, realizing the outward rotation and opening of the other side of the first door body 210. In this way, the position switching is achieved by setting the first spring, which is beneficial to utilize the elasticity of the spring itself to improve the efficiency of switching and resetting, thereby improving the efficiency of synchronous door opening.

[0067] In another embodiment, the rotating member 110 includes a mounting body 111. In one specific embodiment, in conjunction with... Figures 3 to 5As shown, the mounting body 111 and the second linkage assembly 130 each have a second slide rail 113 and a second sliding part 131. The second sliding part 131 slides with the second slide rail 113 to allow the second sliding part 131 to switch between a third position and a fourth position relative to the second slide rail 113. It is understood that the length of the second slide rail 113 can limit the switching length between the third and fourth positions. To illustrate with a practical application scenario: when the second linkage assembly 130 and the rotating member 110 are in the first position, one end of the second linkage assembly 130 abuts against one side of the second slide rail 113, while the other end of the second linkage assembly 130 is not engaged with one side of the second door body 220. When the second linkage assembly 130 and the rotating member 110 are in the second position, one end of the second linkage assembly 130 abuts against the other side of the second slide rail 113. At this time, the other end of the second linkage assembly 130 pulls inward or pushes up one side of the second door 220, and the other side of the second door 220 rotates outward to open. In this way, the sliding engagement between the second linkage assembly 130 and the rotating member 110 is achieved through the setting of the second slide rail 113, which is beneficial to achieve positioning of sliding movement, improves the movement stability of the second linkage assembly 130, and thus improves the opening stability of the second door 220.

[0068] In another specific embodiment, a second spring is provided between the mounting body 111 and the second linkage assembly 130 to achieve switching between the third and fourth positions. Specifically, it can be understood that when one end of the second linkage assembly 130 is in the third position, the second spring is in the third extension state (such as the original length state or the extension amount is the third extension amount), and the other end of the second linkage assembly 130 is not engaged with the second door 220. When one end of the second linkage assembly 130 is in the fourth position, the second spring is in the fourth extension state (the extension amount is the fourth extension amount, where the extension amount of the fourth extension amount can be greater than the extension amount of the first extension amount and the extension amount of the original length state), and the other end of the second linkage assembly 130 pulls inward or lifts one side of the second door 220, realizing the outward rotation and opening of the other side of the second door 220. In this way, the position switching is achieved by setting the second spring, which is beneficial to utilize the elasticity of the spring itself to improve the efficiency of switching and resetting, thereby improving the efficiency of synchronous door opening.

[0069] To improve the rotational stability of the rotating component 110, in some embodiments, such as Figure 3As shown, the rotating component 110 also includes a rotating shaft 114. The mounting body 111 is rotatably mounted on the refrigerator body assembly 20 of the refrigerator 1 via the rotating shaft 114. The first slide rail 112 and the second slide rail 113 are symmetrically arranged with respect to the rotating shaft 114 on the mounting body 111. Thus, the arrangement of the rotating shaft 114 ensures that the rotation of the rotating component 110 is maintained on the same axis, achieving stable rotation. Furthermore, the symmetrical arrangement of the first slide rail 112 and the second slide rail 113 ensures that the angles at which the first door 210 and the second door 220 are opened outwards remain consistent, which helps to improve the aesthetics of the opening.

[0070] It should be noted that the first slide rail 112 and the second slide rail 113 can be connected or spaced apart, and no further restrictions are imposed here.

[0071] In one specific implementation method, combined with Figures 3 to 5 As shown, the first slide rail 112 and the second slide rail 113 are arranged in a straight line, and the rotating shaft 114 is located between the first slide rail 112 and the second slide rail 113. When the first connecting rod assembly 120 is in the first position and the second connecting rod assembly 130 is in the second position, the first connecting rod assembly 120 abuts against the side of the first slide rail 112 away from the rotating shaft 114, and the second connecting rod assembly 130 abuts against the side of the second slide rail 113 away from the rotating shaft 114. When the rotating component 110 rotates, it drives the first connecting rod assembly 120 to switch to the second position and the second connecting rod assembly 130 to switch to the fourth position, so that one end of the first connecting rod assembly 120 abuts against the rotating shaft 114, and one end of the second connecting rod assembly 130 abuts against the rotating shaft 114. Thus, the abutment and limiting are achieved through the rotating shaft 114, which helps reduce the processing difficulty; it is only necessary to ensure that the lengths of the first slide rail 112 and the second slide rail 113 are the same and that the rotating shaft 114 is positioned in the middle.

[0072] In another specific embodiment, the first slide rail 112 and the second slide rail 113 are symmetrically spaced on the mounting body 111 with respect to the rotating shaft 114. In this way, the spacing can reduce the collision between the first link assembly 120 and the second link assembly 130 and the rotating shaft 114, thereby avoiding any impact on the rotation of the rotating component 110 and improving the rotational stability of the rotating component 110.

[0073] It should be noted that the first link assembly 120 and the second link assembly 130 in the above embodiments can be, but are not limited to, two-link, three-link, or five-link assemblies, etc., and no further restrictions are imposed here.

[0074] In conjunction with any embodiment of the first link assembly 120 described above, see back Figure 4As shown, the first linkage assembly 120 is a three-bar linkage assembly. Specifically, the first linkage assembly 120 includes a first link 122, a second link 123, and a third link 124. One end of the first link 122 is provided with a first sliding part 121, and the other end is movably engaged with one end of the second link 123. One end of the third link 124 is rotatably connected to one end of the second link 123, and the other end is rotatably engaged with the first door body 210. When the first sliding part 121 switches from the first position to the second position, the first link 122 moves relative to the second link 123, so that the second link 123 drives the other end of the third link 124 to pull inward or push up one side of the first door body 210, so that the other side of the first door body 210 is pushed outward and opened.

[0075] Understandably, when the first sliding part 121 and the first slide rail 112 are in sliding engagement, the first connecting rod 122 slides relative to the rotating member 110, causing the first connecting rod 122 to move relative to the rotating member 110 in a direction away from the second connecting rod assembly 130. At this time, through the action of the second connecting rod 123, the second connecting rod 123 has a moving force relative to the first connecting rod 122 in a direction closer to the second connecting rod assembly 130. Thus, the second connecting rod 123 drives the third connecting rod 124 to move in a direction closer to the second connecting rod assembly 130, causing the third connecting rod 124 to pull one side of the first door body 210 inward. At this time, the first door body 210 is equivalent to a lever, and the other side of the first door body 210 pushes outward to open. In this way, through the cooperation of the first connecting rod 122 and the second connecting rod 123, the rotation vector of the rotating member 110 is converted into an inward or outward pushing force moving near the center of the door body assembly 200. The structure is simple and easy to set up. Furthermore, the rotational coordination of the second link 123 and the third link 124 is equivalent to a two-bar linkage structure, which helps to achieve effort saving while making the movement more stable.

[0076] It should be noted that the movable cooperation between the first link 122 and the second link 123 to provide the motion force for the third link 124 can be achieved through rotational cooperation or sliding cooperation, etc., without much restriction here.

[0077] In some embodiments, the other end of the first link 122 is slidably engaged with one end of the second link 123, such that when the first sliding part 121 switches from the first position to the second position, the first link 122 slides relative to the second link 123 from the fifth position to the sixth position, so that the second link 123 drives one end of the third link 124 to pull inward to one side of the first door 210, and the other side of the first door 210 is pushed outward to open. In this way, by means of the sliding engagement of the first link 122 and the second link 123, it is beneficial to directly convert the lateral motion vector brought by the rotating member 110 into the sliding motion vector of the first link 122 (that is, the second link 123 slides relative to the first link 122 in a direction close to the rotating member 110), thereby driving one end of the third link 124 to pull inward to one side of the first door 210, so that the other side of the first door 210 is pushed out.

[0078] It should be noted that the sliding engagement of the first link 122 and the second link 123 can be achieved, but is not limited to, through a slide rail or a telescopic rod, etc., and no further restrictions are imposed here.

[0079] In other embodiments, in conjunction with the appendix Figure 5 The second link 123 is rotatably connected to the first link 122. When the first link 122 switches from the first position to the second position via the rotating member 110, it has a certain rotational vector. This results in the mating end of the first link 122 and the second link 123 having a rotational vector moving away from the cabinet assembly 20. Because the length of the first link 122 decreases in the transverse direction (i.e., the width direction of the refrigerator 1), it pulls the second link 123 to rotate closer to the rotating member 110, giving the second link 123 a movement vector in the width direction, thus pulling the other end of the third link 124 inward. This rotational design results in a simple structure that is easy to install.

[0080] In any embodiment of the first link assembly 120 described above, the first link 122 and the second link 123 are rotatably engaged. It should be noted that the rotatable engagement between the first link 122 and the second link 123 can be achieved, but is not limited to, through a rotating shaft 114, teeth, or other means. Specifically, see [link to previous section]. Figure 4As shown, the first linkage assembly 120 also includes a first gear assembly 125, which is fixed to the second linkage 123. The first linkage 122 has a first tooth that meshes with the first gear assembly 125. The first gear assembly 125 and the first tooth are locked together so that when the first sliding part 121 switches from the first position to the second position, the first linkage 122 and the first gear assembly 125 are locked together, causing the first linkage 122 to drive one end of the third linkage 124 via the second linkage 123 to lift the first door 210, thus opening the first door 210. It can be understood that when the rotating member 110 rotates, it will cause the first linkage 122 to move in a direction away from the rotating member 110. At this time, the locking of the first tooth and the first gear assembly 125 allows the first linkage 122 to drive the second linkage 123 to rotate, causing the third linkage 124 to push the first door 210 outward. When the first door 210 needs to be closed, simply rotate the rotating member 110 in the opposite direction (this can be achieved by closing the first door 210 or the second door 220, or by rotating the rotating member 110), and the first door 210 will be closed. The engagement of the first tooth and the first gear assembly 125 not only locks the door but also provides a certain amount of space for movement between the first link 122 and the second link 123. This allows the first tooth to adjust the position of the first link 122 and the second link 123 when the force between them is too large, reducing the force and improving transmission stability. Thus, the relative sliding of the first link 122 and the second link 123 through meshing transmission improves the stability and accuracy of their relative movement, ensuring the stability and precision of synchronous door opening and preventing misalignment.

[0081] It should be noted that the first gear assembly 125 can be, but is not limited to, a toothed transmission with opposing surfaces such as a worm gear or a turbine, or a planar transmission between at least one gear and teeth. No further limitations are imposed here.

[0082] In one specific implementation, see back Figure 5As shown, the first gear assembly 125 includes a first gear 1251 and a second gear 1252 that meshes with and drives the first gear 1251. The first gear 1251 is fixedly connected to the second connecting rod 123, and the second gear 1252 meshes with the first tooth portion. Specifically, when the first sliding part 121 is in the first position, the second tooth portion is locked in engagement with the first tooth portion. When the first sliding part 121 is in the second position, the first connecting rod 122 drives the first tooth portion to rotate and slide, causing the first tooth portion to rotate and engage with and lock with the first gear 1251 and the second gear 1252. It can be understood that when the first sliding part 121 is in the first position, the first gear 1251 is locked to the first connecting rod 122, providing a good positioning and locking effect. When the first sliding part 121 is in the second position, and as the rotating part 110 continues to rotate, the end of the first connecting rod 122 near the second connecting rod 123 rotates inward, causing the first tooth to mesh with the first gear 1251 and the second gear 1252. This allows the second connecting rod 123 to be locked in place by the meshing of the second gear 1252 and the first gear 1251 on the first tooth, achieving rotational engagement between the second connecting rod 123 and the first connecting rod 122. This, in turn, drives the end of the third connecting rod 124 near the first door 210 to generate an outward pushing force, causing the other side of the first door 210 to be pushed outward and open. Thus, unlike using only a single gear, the use of the first gear 1251 and the second gear 1252 provides a greater locking force when the first door 210 is opened, thereby improving the stability of the transmission.

[0083] In other embodiments, the sliding engagement of the first link 122 and the second link 123 is achieved through a slide rail engagement. Specifically, the end of the first link 122 away from the rotating member 110 is provided with a slide rail, and the second link 123 is slidably limited to the slide rail, so that the second link 123 can slide relative to the first link 122 in a direction close to the rotating member 110 (i.e., the middle part of the refrigerator 1 door assembly 200), so that one end of the third link 124 generates an inward pushing force on one side of the first door 210, thereby causing the other side of the first door 210 to push outward, realizing the opening of the first door 210.

[0084] In conjunction with any embodiment of the second link assembly 130 described above, see back Figure 6As shown, the second linkage assembly 130 includes a fourth linkage 132, a fifth linkage 133, and a sixth linkage 134. One end of the fourth linkage 132 has a second sliding portion 131, and the other end is movably engaged with one end of the fifth linkage 133. One end of the sixth linkage 134 is rotatably connected to one end of the fifth linkage 133, and the other end is rotatably engaged with the second door body 220. When the second sliding portion 131 switches from the third position to the fourth position, the fourth linkage 132 moves relative to the fifth linkage 133, causing the fifth linkage 133 to drive the other end of the sixth linkage 134 to abut and open the second door body 220. It can be understood that through the cooperation of the second sliding portion 131 and the second slide rail 113, when one end of the fourth linkage 132 is rotatably engaged with the rotating member 110, it has a sliding vector moving away from the direction of the rotating member 110. Specifically, when the second sliding part 131 is in the third position, the second sliding part 131 abuts against the first end of the second slide rail 113 away from the rotating member 110. At this time, the fourth link 132 and the fifth link 133 remain relatively stationary, and the sixth link 134 does not pull inward on one side of the second door body 220. When the rotating component 110 rotates, it generates lateral and longitudinal movement components. The second sliding part 131 switches from the third position to the fourth position via the longitudinal movement component, causing it to abut against the side wall of the second slide rail 113 or against the end of the second slide rail 113 closest to the rotating component 110. Meanwhile, the fourth link 132 moves laterally away from the rotating component 110 (i.e., in the width direction of the door assembly 200) via the lateral movement component. At this time, the fourth link 132 slides relative to the fifth link 133, causing the fifth link 133 to slide closer to the rotating component 110. This causes one end of the sixth link 134 to pull inward to one side of the second door 220. Since the second door 220 acts as a lever, the other side of the second door 220 pushes outward, opening the second door 220. Thus, through the coordinated arrangement of the three-bar linkage, greater effort is required while achieving high transmission efficiency.

[0085] It should be noted that, similarly, the sliding fit between the fourth link 132 and the fifth link 133 in the above embodiments can be, but is not limited to, a slide rail fit, or a meshing sliding fit, etc., without much restriction here.

[0086] In one embodiment, see back Figure 6As shown, the second linkage assembly 130 also includes a third gear 135, which is fixed to one end of the fifth linkage 133. The fourth linkage 132 is provided with a second tooth that meshes with the third gear 135. The second tooth engages and locks with the third gear 135, allowing the fourth linkage 132 and the fifth linkage 133 to rotate, thereby causing the other end of the sixth linkage 134 to abut against and open the second door 220. Specifically, when the second sliding part 131 and the second slide rail 113 slide between the third and fourth positions, the second tooth on the fourth linkage 132 engages and locks with the third gear 135. This causes the rotation of the rotating member 110 to pull the fifth linkage 133 to rotate, causing the fifth linkage 133 to push one end of the sixth linkage 134 out of the second door 220, thus opening the second door 220. When the second door 220 needs to be closed, the rotating part 110 can be rotated in the opposite direction, and the second tooth and the third gear 135 can be locked together to allow the fourth link 132 to pull the fifth link 133 and the sixth link 134 to reset, thereby closing the second door 220.

[0087] In conjunction with any of the embodiments of the first link assembly 120 and the second link assembly 130 described above, see back Figure 4 As shown, the first linkage assembly 120 includes a first gear assembly 125, which includes a first gear 1251 and a second gear 1252. The second linkage assembly 130 includes a third gear 135. It is understood that when the first door 210 is pulled first to rotate the rotating component 110, opening the first door 210 requires overcoming greater resistance than opening the second door 220 (including the sealing pressure difference between the first door 210 and the housing assembly 20, and the pressure difference between the first door 210 and the housing assembly 20 due to temperature differences). Therefore, by using the first gear 1251 and the second gear 1252 to lock the first linkage 122, the stability of the first linkage 122 driving the second linkage 123 and the third linkage 124 is ensured, which helps improve the stability of the transmission. Meanwhile, since the first door 210 reduces the resistance caused by the pressure difference, the second door 220 does not need to overcome too much resistance. Based on this, by setting the third gear 135 to achieve locking, it is beneficial to reduce the number of parts, save installation space and reduce costs.

[0088] It should be noted that the rotation of the aforementioned rotating component 110 can be achieved by manually opening the first door 210 or the second door 220, or by driving the rotating component 110 with a motor, etc., without much restriction here.

[0089] In conjunction with any embodiment of the rotating member 110 described above, see Appendix Figure 4As shown, the door opening device 100 also includes a power mechanism 140. The power mechanism 140 includes a transmission component 141 and a power source 142. The power source 142 is used to drive the transmission component 141 to rotate. The transmission component 141 rotates in conjunction with the rotating component 110. Thus, by providing the power mechanism 140, the operator's effort in opening the door can be reduced, and the door assembly 200 can be opened synchronously.

[0090] It should be noted that the power mechanism 140 can be, but is not limited to, the combination of a winding machine and a toothed belt, or the combination of a motor and a drive component, etc., and no further restrictions are imposed here.

[0091] In one specific embodiment, the power source 142 includes a motor, and the transmission component 141 includes a bearing transmission component 141. The bearing transmission component 141 is inserted and fixed to the rotating component 110. The other end of the bearing rotating component 110 is coaxially driven with the motor so that the motor rotates coaxially with the rotating shaft 114 through the bearing transmission component 141.

[0092] In another specific implementation, such as Figure 4 As shown, the rotating component 110 is provided with a meshing part 1411, and the transmission component 141 is connected to the rotating component 110 through the meshing part 1411 for rotational transmission. The meshing part 1411 is located on the periphery of the rotating component 110. It can be understood that, unlike inserting the transmission component 141 into the rotating component 110, by having the meshing part 1411 located on the periphery of the rotating component 110, the transmission component 141 and the meshing part 1411 cooperate to transmit power, ensuring that the rotation of the periphery of the rotating component 110 does not interfere with the installation space in the central area of ​​the rotating component 110, and creating clearance space with other components. At the same time, it ensures the rotational transmission of the rotating component 110. Furthermore, the meshing part 1411 makes the transmission more precise, which helps to improve the stability of synchronous door opening.

[0093] It should be noted that the engagement method between the transmission component 141 and the meshing part 1411 can be, but is not limited to, gear-to-gear engagement, belt-to-gear engagement, or lead screw-to-gear engagement, etc., without further restrictions.

[0094] In some embodiments, the transmission component 141 includes a lead screw, and the power source 142 includes a motor, which drives the lead screw. The lead screw engages with the meshing part 1411. Taking the accompanying drawings as an example, the drive engagement between the lead screw and the motor causes the lead screw to move up and down along the thickness direction of the housing assembly 20. Furthermore, through the engagement of the lead screw with the meshing part 1411, the meshing part 1411 rotates clockwise or counterclockwise along the transverse direction of the housing assembly 20, driving the rotating component 110 to rotate. Thus, the transmission method using a lead screw and motor differs from transmission methods using gears, etc. The engagement method of the lead screw and motor is simple, easy to set up, and helps reduce processing difficulty and improve finished product processing efficiency.

[0095] In other embodiments, the transmission element 141 includes a toothed belt, and the power source 142 includes a winder for winding and unwinding the toothed belt. The toothed belt engages with the engagement portion 1411, such that the winder winds the toothed belt to control the rotation direction of the engagement portion 1411.

[0096] In conjunction with any embodiment of the door opening device 100 described above, such as Figure 7 As shown, the door opening device 100 also includes an auxiliary ejection assembly 150. The auxiliary ejection assembly 150 includes an ejection state that engages with at least one of the first door body 210 and the second door body 220, and a separation state that is spaced apart from the first door body 210 and the second door body 220. The auxiliary ejection assembly 150 is fixedly connected to the rotating member 110, so that the rotation of the rotating member 110 drives the auxiliary ejection assembly 150 to switch between the ejection state and the separation state. It is understandable that the auxiliary ejection assembly 150 is fixedly connected to the rotating member 110. While the rotating member 110 drives the first link assembly 120 and the second link assembly 130 to rotate and slide, it can drive the auxiliary ejection assembly 150 to eject the first door 210 and / or the second door 220. This reduces the force burden on the first link assembly 120 and the second link assembly 130 when opening the first door 210 and / or the second door 220, without needing to increase the rotation speed or load power of the rotating member 110 to increase or decrease the opening efficiency of the first door 210 and the second door 220.

[0097] It should be noted that the ejection engagement position of the auxiliary ejection component 150 and the door component 200 can be any position, and no further restrictions are imposed here.

[0098] In one specific implementation, see back Figures 3 to 4As shown, when the auxiliary ejection assembly 150 is in the ejection state, it ejects and engages with the side of the first door 210 closest to the second door 220. At this time, one end of the first connecting rod assembly 120 is spaced apart from the auxiliary ejection assembly 150 and the second door 220, and is rotatably mounted on the first door 210. It can be understood that when the rotating member 110 rotates, one end of the first connecting rod assembly 120 switches from the first position to the second position, thereby causing the other end of the first connecting rod assembly 120 to either eject or inward from the first door 210 to open it. However, since the connection between the first connecting rod assembly 120 and the first door 210 is relatively long (i.e., the torque is greater), the rotating member 110 needs to rotate further to provide a greater torque for opening. At this point, by positioning the auxiliary ejection component 150 on the side of the first door 210 closest to the second door 220, the auxiliary ejection component 150 can eject the side of the first door 210 closest to the second door 220 when the rotating member 110 rotates (at which point the torque is relatively small). This allows for effortless ejection of the first door 210, thereby opening the first door 210 and reducing the rotational burden on the rotating member 110. Furthermore, unlike the method where the auxiliary ejection component 150 is engaged with the first door 210 and the second door 220, the rotating member 110 needs to be rotated to open the first door 210 and the second door 220. The rotating member 110 is not engaged with the first door 210 and the second door 220 for an extended period of time, making it difficult to provide opening force for both the first door 210 and the second door 220 in a short period of time. In this embodiment, the force-bearing area of ​​the auxiliary ejection component 150 does not need to be set too large, which can increase the pressure on the first door 210 when it is opened, thereby ensuring the opening of the first door 210. In addition, the prior opening of the first door 210 can reduce the temperature difference between the freezing space inside the cabinet component 20 and the outside, thereby reducing the pressure difference between the second door 220 and the outside, which helps to reduce the resistance to opening the door and improve the opening efficiency.

[0099] It should be noted that the auxiliary ejection assembly 150 may be, but is not limited to, a fixed rod, a protrusion, or other structure set on the rotating part 110, and no further restrictions are imposed here.

[0100] Specifically, in one embodiment, such as Figures 8 to 9As shown, the auxiliary ejection assembly 150 includes a first protrusion 151 and an ejector 152. The first protrusion 151 is disposed on the rotating member 110, so that the rotation of the rotating member 110 drives the first protrusion 151 to eject the ejector 152. The ejector 152 is correspondingly disposed with the first door body 210 and / or the second door body 220, so that it ejects and engages with the first door body 210 and / or the second door body 220. Thus, the first protrusion 151 is disposed on the rotating member 110, so that the rotating member 110 is equivalent to a cam structure, so that the first protrusion 151 and the ejector 152 eject and engage. The size of the ejector 152 can be used as the engagement distance, so that the size of the first protrusion 151 can be reduced, which facilitates the continued rotation of the rotating member 110.

[0101] It should be noted that the ejector 152 and the first protrusion 151 can be fixedly connected as an integral part, or they can be spaced apart; no further restrictions are made here.

[0102] In conjunction with any embodiment of the ejector 152 described above, see back Figure 8As shown, the ejector 152 includes a first body 1521 and a second body 1522 that is movably inserted into the first body 1521. The second body 1522 is used to eject into the first protrusion 151. The auxiliary ejector assembly 150 also includes an elastic component 1523. The elastic component 1523 is disposed between the first body 1521 and the second body 1522, so that the first protrusion 151 abuts against the second body 1522. The second body 1522 abuts against the first body 1521 through the elastic component 1523. It can be understood that the first body 1521 and the second body 1522 are inserted into each other through the first protrusion 151, and the elastic component 1523 makes the extension and retraction between the first body 1521 and the second body 1522 adjustable. Specifically, when the auxiliary ejector assembly 150 is in the separated state, the elastic component 1523 is in its original length state, and at this time there is a fitting gap between the first body 1521 and the second body 1522 and the door assembly 200. When the auxiliary ejector assembly 150 is in the ejected state, the first protrusion 151 pushes up the second body 1522, causing it to telescopically engage with the first body 1521. This allows the second body 1522 to engage with the first door 210 and / or the second door 220 through the engagement gap. At this time, the elastic assembly 1523 is in a compressed state, and the first door 210 and / or the second door 220 are pushed open. As the rotating member 110 rotates further, the first door 210 and the second door 220 may close, or the opening angle of the first door 210 and the second door 220 may increase. The first protrusion 151 no longer engages with the second body 1522, and the second body 1522 returns to its original position through the action of the elastic assembly 1523. Thus, the automatic reset of the ejector 152 is achieved through the setting of the elastic assembly 1523, improving the convenience of synchronous door opening. Furthermore, the elastic component 1523 provides a certain buffering force when the first body 1521 is pushed out and engaged with the first door 210 or the second door 220, thus avoiding damage to the first door 210 and the second door 220.

[0103] It should be noted that the aforementioned elastic component 1523 may include one elastic element or multiple elastic elements, etc., without further restrictions.

[0104] In one embodiment, see back Figure 8As shown, the elastic component 1523 includes at least two elastic elements. The second body 1522 includes a first support body 15221 and a second support body 15222 protruding from the first support body 15221. The at least two elastic elements include a first elastic element 15231 and a second elastic element 15232. The first elastic element 15231 and the second elastic element 15232 are respectively disposed opposite to each other on both sides of the second support body 15222; and the first elastic element 15231 and the second elastic element 15232 are sandwiched between the first support body 15221 and the first body 1521. Thus, by symmetrically arranging the first elastic element 15231 and the second elastic element 15232, smooth movement of the second body 1522 in conjunction with the first protrusion 151 can be achieved, avoiding unstable movement caused by unilateral compression.

[0105] It should be noted that in the above embodiments, the elastic element can be embedded or clamped. Furthermore, the second body 1522 can cooperate with the first door body 210 and / or the second body 1522; no further restrictions are imposed here.

[0106] In one example, see back Figures 8 to 9As shown, the second body 1522 has a first mating surface 1522a and a second mating surface 1522b bent and connected to the first mating surface 1522a on the side away from the first protrusion 151. The first mating surface 1522a corresponds to the first door body 210. The second mating surface 1522b corresponds to the second door body 220. When the rotating member 110 pushes out of the second body 1522, the first mating surface 1522a engages with the first door body 210. It can be understood that, through the arrangement of the first mating surface 1522a and the second mating surface 1522b, when the first protrusion 151 engages with the second body 1522, the first mating surface 1522a engages with the first door body 210 first, and then, with the rotation of the rotating member 110, the first connecting rod assembly 120 and the second connecting rod assembly 130 jointly pull inward or push up the first door body 210 and the second door body 220. Thus, since the connection between the first linkage assembly 120 and the first door body 210 is relatively long (i.e., the torque is far), the rotating member 110 needs to rotate further to provide a greater torque for opening. At this time, by setting the auxiliary ejection assembly 150 on the side of the first door body 210 close to the second door body 220, the first mating surface 1522a can be ejected from the side of the first door body 210 close to the second door body 220 when the rotating member 110 rotates (at which time the torque is smaller), thus enabling the first door body 210 to be pushed out with less effort, thereby opening the first door body 210 and reducing the rotational burden on the rotating member 110. Furthermore, unlike setting the first mating surface 1522a and the second mating surface 1522b flush so that they are simultaneously ejected and engaged with the first door body 210 and the second door body 220, since the rotating member 110 is not ejected and engaged with the first door body 210 and the second door body 220 for a long time, it is difficult to provide opening force for opening both the first door body 210 and the second door body 220 in a short time. In this embodiment, the force-bearing area is set too large. By reducing the force-bearing ejection area through the first mating surface 1522a, the pressure on the first door 210 when it is opened can be increased, thereby ensuring the opening of the first door 210. In addition, the prior opening of the first door 210 can reduce the temperature difference between the freezing space inside the cabinet assembly 20 and the outside, thereby reducing the pressure difference between the second door 220 and the outside, which helps to reduce the resistance to opening the door and improve the opening efficiency.

[0107] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. When the above-disclosed technical content is used to make some changes or modifications to the equivalent implementation, any simple modifications, equivalent changes and modifications made to the above implementation based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A door opening device for opening a refrigerator door assembly, characterized in that, include: Rotating component; A first linkage assembly, one end of which is slidably engaged with the rotating member to allow the first end of the first linkage assembly to switch between a first position and a second position relative to the rotating member; the other end of the first linkage assembly is rotatably engaged with the first door body of the door body assembly. When one end of the first linkage assembly is in the first position relative to the rotating member, the other end of the first linkage assembly drives the first door to close; when one end of the first linkage assembly is in the second position relative to the rotating member, the other end of the first linkage assembly engages with the first door to pull or push it inward, thereby opening the first door. The second linkage assembly has one end slidably engaged with the rotating member to allow the one end of the second linkage assembly to switch between a third position and a fourth position relative to the rotating member; the other end of the second linkage assembly is rotatably engaged with the second door body of the door body assembly. When one end of the second linkage assembly is in the third position relative to the rotating member, the other end of the second linkage assembly drives the second door to close. When one end of the second linkage assembly is in the second position relative to the rotating member, the other end of the second linkage assembly engages with the second door body to pull or push it up, thereby opening the second door body; The rotating component is rotated under force to drive the first connecting rod assembly to switch between the first position and the second position relative to the rotating component, and to drive the second connecting rod assembly to switch between the third position and the fourth position relative to the rotating component.

2. The door opening device according to claim 1, characterized in that, The rotating component includes a mounting body; wherein... One of the mounting body and the first linkage assembly is provided with a first slide rail, and the other is provided with a first sliding part; the first sliding part slides in cooperation with the first slide rail so that the first sliding part switches between the first position and the second position relative to the first slide rail. And / or, one of the mounting body and the second linkage assembly is provided with a second slide rail, and the other is provided with a second sliding part; the second sliding part slides in cooperation with the second slide rail so that the second sliding part switches between the third position and the fourth position relative to the second slide rail.

3. The door opening device according to claim 2, characterized in that, The rotating component also includes a rotating shaft; the mounting body is rotatably mounted on the refrigerator's cabinet assembly via the rotating shaft; the first slide rail and the second slide rail are symmetrically arranged on the mounting body with respect to the rotating shaft.

4. The door opening device according to claim 2, characterized in that, The first linkage assembly includes a first link, a second link, and a third link; one end of the first link is provided with the first sliding part, and the other end is movably engaged with one end of the second link; one end of the third link is rotatably connected to one end of the second link, and the other end is rotatably engaged with the first door body; wherein, when the first sliding part switches from the first position to the second position, the first link moves relative to the second link, so that the second link drives the other end of the third link to pull inward or push out to one side of the first door body, so that the other side of the first door body is pushed outward and opened.

5. The door opening device according to claim 4, characterized in that, The other end of the first link slides into one end of the second link, such that when the first sliding part switches from the first position to the second position, the first link slides from the fifth position to the sixth position relative to the second link, so that the second link drives one end of the third link to pull inward or push out to one side of the first door, and the other side of the first door is pushed outward to open.

6. The door opening device according to claim 4, characterized in that, The first linkage assembly further includes a first gear assembly, which is rotatably disposed on the second linkage. The first linkage is provided with a first tooth that meshes with the first gear assembly. The first gear assembly and the first tooth are locked together so that when the first sliding part switches from the first position to the second position, the first linkage and the first gear assembly are locked together, so that the first linkage drives one end of the third linkage through the second linkage to lift the first door body, thereby opening the first door body.

7. The door opening device according to claim 6, characterized in that, The first gear assembly includes a first gear and a second gear that meshes with the first gear; the first gear is fixedly connected to the second connecting rod, and the second gear meshes with the first tooth; wherein, when the first sliding part is in the first position, the second gear meshes with and locks with the first tooth; when the first sliding part is in the second position, the first connecting rod drives the first tooth to rotate, so that the first tooth rotates to mesh with and lock with the first gear and the second gear.

8. The door opening device according to claim 4, characterized in that, The second linkage assembly includes a fourth linkage, a fifth linkage, and a sixth linkage; one end of the fourth linkage is provided with the second sliding part, and the other end is movably engaged with one end of the fifth linkage; one end of the sixth linkage is rotatably connected to one end of the fifth linkage, and the other end is rotatably engaged with the second door body; wherein, when the second sliding part switches from the third position to the fourth position, the fourth linkage moves relative to the fifth linkage, so that the fifth linkage drives the other end of the sixth linkage to abut and push open the second door body.

9. The door opening device according to claim 8, characterized in that, The second linkage assembly further includes a third gear, which is fixed to one end of the fifth linkage; the fourth linkage is provided with a second tooth that meshes with the third gear; wherein, by engaging and locking the second tooth with the third gear, the fourth linkage and the fifth linkage rotate to drive the other end of the sixth linkage to abut and open the second door.

10. The door opening device according to claim 1, characterized in that, The door opening device further includes a power mechanism; the power mechanism includes a transmission component and a power source; the power source is used to drive the transmission component to rotate; the transmission component rotates with the rotating component.

11. The door opening device according to claim 10, characterized in that, The rotating component is provided with a meshing part, and the transmission component is connected to the rotating component for rotational transmission through the meshing part; wherein, the meshing part is located on the periphery of the rotating component.

12. The door opening device according to claim 10, characterized in that, The door opening device further includes an auxiliary ejection assembly, which includes an ejection state that engages with at least one of the first door and the second door, and a separation state that is spaced apart from the first door and the second door. The auxiliary ejection assembly is fixedly connected to the rotating member so that the rotation of the rotating member drives the auxiliary ejection assembly to switch between the ejection state and the separation state.

13. The door opening device according to claim 12, characterized in that, The auxiliary ejection assembly includes a first protrusion and an ejector; the first protrusion is disposed on the rotating member so that the rotating member rotates to drive the first protrusion to eject the ejector, and the ejector is disposed correspondingly to the first door body and / or the second door body so as to eject and cooperate with the first door body and / or the second door body.

14. The door opening device according to claim 13, characterized in that, The ejector includes a first body and a second body that is movably inserted into the first body; the second body is used to eject the first protrusion. The auxiliary ejection assembly also includes an elastic component; the elastic component is disposed between the first body and the second body so that the first protrusion abuts against the second body; the second body abuts against the first body through the elastic component.

15. The door opening device according to claim 14, characterized in that, The elastic component includes at least two elastic elements; the second body includes a first support and a second support protruding from the first support; the at least two elastic elements include a first elastic element and a second elastic element; the first elastic element and the second elastic element are respectively disposed opposite to each other on both sides of the second support; and the first elastic element and the second elastic element are sandwiched between the first support and the first body.

16. The door opening device according to claim 14, characterized in that, The second body has a first mating surface and a second mating surface that is bent and connected to the first mating surface on the side away from the first protrusion. The first mating surface is provided in relation to the first door body; the second mating surface is provided in relation to the second door body; wherein, when the rotating member pushes out of the second body, the first mating surface is engaged with the first door body.

17. A door assembly for use with a refrigerator body assembly, characterized in that, It includes a door assembly and an opening device as described in any one of claims 1 to 16; the door assembly is hinged to the housing assembly via the opening device for opening and closing.

18. A refrigerator, characterized in that, It includes a housing assembly and the door assembly as described in claim 17; the door assembly is hinged to the housing assembly.

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