Sliding door device, door body assembly and refrigeration equipment

The sliding door mechanism addresses door interference issues by using active and passive components to move the door panel parallel to the door width, ensuring smooth operation and improved usability.

CN223106451UActive Publication Date: 2025-07-15HEFEI MIDEA REFRIGERATOR CO LTD +2
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Patent Information

Application Number
CN202422090634.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Priority Date
2024-01-22
Filing Date
2024-08-26
Publication Date
2025-07-15
Estimated Expiration
2034-08-26

AI Technical Summary

Technical Problem

In the prior art, the door body assembly with door panels is prone to interfere with the side wall of the installation space in the cabinet during the opening and closing of the door, resulting in the inability to open or close normally.

Method used

The sliding door device is adopted, including an active sliding door mechanism and a driven sliding door mechanism. Through the guide rails and ball support, the door panels move stably and smoothly during the opening and closing of the door, and avoid interference with obstacles.

Benefits of technology

It realizes that the door panel avoids obstacles during the opening and closing of the door, improves the convenience of use and equipment stability, especially in narrow environments, and extends the service life of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of household appliances, and provides a sliding door device, a door body assembly and refrigeration equipment. The sliding door device comprises a driving sliding door mechanism, a first driven sliding door mechanism, a first connecting rod, at least two second driven sliding door mechanisms and a second connecting rod. The driving sliding door mechanism comprises a first base, a first sliding block, a second sliding block and a connecting piece. A first guide rail is formed on one side of the first base, and a second guide rail is formed on the other side. The first sliding block is arranged on the first guide rail in a sliding mode, and the second sliding block is arranged on the second guide rail in a sliding mode. The connecting piece is connected with the first sliding block and the second sliding block. The first driven sliding door mechanism comprises a second base and a third sliding block; the second driven sliding door mechanism comprises a third base and a fourth sliding block. According to the sliding door device, the driving sliding door mechanism is arranged on the box door, and the driving sliding door mechanism is matched with the driven sliding door mechanism to drive the door plate to slide relative to the box door, so that obstacles can be avoided in the closing or opening process of the box door.
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Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a sliding door device, a door body assembly and a refrigeration device. Background Art

[0002] With the increasing demand for the integration of household appliances and home furnishings, the embedded design of household appliance products has become a trend.

[0003] However, in order to pursue a better home integration effect, sometimes it is necessary to fixedly connect a door panel to the surface of the cabinet door, and at the same time, higher requirements are placed on the gap between the embedded electrical appliance and the side wall of the cabinet to further improve the home integration effect. This results in that after the electrical appliance is embedded in the cabinet, if the existing hinge technology is adopted, the door body assembly with the door panel will interfere with the side wall of the installation space inside the cabinet during the process of opening and closing the door, thus causing the door body assembly of the electrical appliance to be unable to be normally opened or closed. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the related art. For this purpose, the utility model provides a sliding door device, a door body assembly and a refrigeration device to solve the problem that the door body assembly with the door panel may interfere with the side of the installation space during the process of opening and closing the door, resulting in the door body assembly of the electrical appliance being unable to be normally opened or closed.

[0005] A sliding door device according to an embodiment of the first aspect of the present application is applied to a refrigeration device and is used to be arranged on a cabinet door provided with a door panel on the outside. The cabinet door is rotatably connected to the cabinet body, and the cabinet door is adapted to open or close the storage space of the cabinet body;

[0006] The sliding door device includes:

[0007] A driving sliding door mechanism, including: a first base, a traction mechanism, a first slider, a second slider and a connecting member; a first guide rail is formed on one side of the first base, and a second guide rail is formed on the other side; the first slider is slidably arranged on the first guide rail, and the first slider is driven and connected to the cabinet body through the traction mechanism; the second slider is slidably arranged on the second guide rail; two ends of the connecting member are respectively connected to the first slider and the second slider;

[0008] A first driven sliding door mechanism and a first connecting rod, the first driven sliding door mechanism includes a second base and a third slider; a third guide rail is formed on the second base, the third slider is slidably arranged on the third guide rail, and the first connecting rod is connected to the second slider and the third slider;

[0009] At least two second driven sliding door mechanisms and a second connecting rod. The second driven sliding door mechanism includes a third base and a fourth slider; a fourth guide rail is formed on the third base, and the fourth slider is slidably disposed on the fourth guide rail;

[0010] The first base, the second base, and the third base are all configured to be disposed on the box door; the second connecting rod is connected to all of the fourth sliders, and the second slider, the third slider, and all of the fourth sliders are all configured to be connected to the door panel to drive the door panel to move relative to the width direction of the box door during the opening or closing of the box door.

[0011] For the sliding door device according to an embodiment of the present application, the active sliding door mechanism further includes:

[0012] A first ball support member, slidably internally connected to the first guide rail, and the first slider is slidably internally connected to the first ball support member;

[0013] A second ball support member, slidably internally connected to the second guide rail, and the second slider is slidably internally connected to the second ball support member.

[0014] For the sliding door device according to an embodiment of the present application, the first ball support member includes: a first ball and a first support frame; the second ball support member includes: a second ball and a second support frame;

[0015] A first limiting notch is formed on the first support frame, the first ball is rotatably disposed in the first limiting notch, one side of the first ball abuts against the first guide rail, and the other side of the first ball passes through the first limiting notch and abuts against the first slider;

[0016] A second limiting notch is formed on the second support frame, the second ball is rotatably disposed in the second limiting notch, one side of the second ball abuts against the second guide rail, and the other side of the second ball passes through the second limiting notch and abuts against the second slider.

[0017] For the sliding door device according to an embodiment of the present application, the first driven sliding door mechanism further includes:

[0018] A third ball support member, slidably internally connected to the third guide rail, and the third slider is slidably internally connected to the third ball support member.

[0019] For the sliding door device according to an embodiment of the present application, the third ball support member includes: a third ball and a third support frame;

[0020] A third limiting notch is formed on the third support frame, and the third ball is rollably disposed in the third limiting notch. One side of the third ball abuts against the third guide rail, and the other side of the third ball passes through the third limiting notch and abuts against the third sliding block.

[0021] According to the sliding door device of the embodiment of the present application, each of the second driven sliding door mechanisms further includes:

[0022] The fourth ball bearing support member is slidably connected to the fourth guide rail, and the fourth sliding block is slidably connected to the fourth ball bearing support member.

[0023] A door assembly according to a second aspect of the present application includes:

[0024] A box door, rotatably connected to the box body, suitable for opening or closing the storage space of the box body;

[0025] a door panel slidably disposed on the outer side of the box door; and

[0026] The sliding door device described in any one of the above items, wherein the sliding door device is arranged on the box door, the first slider is drivingly connected to the box body through the traction mechanism, and the second slider, the third slider and the fourth slider are all connected to the door panel;

[0027] During the process of opening or closing the door, the first slider and the second slider, the third slider and the fourth slider move in opposite directions to drive the door panel to move in a width direction relative to the door.

[0028] According to the door assembly of the embodiment of the present application,

[0029] The traction mechanism comprises a traction rod, a first rotating shaft fixing seat and a second rotating shaft fixing seat;

[0030] The first rotating shaft fixing seat is connected to the first sliding block, the second rotating shaft fixing seat is used to be connected to the box body, one end of the traction rod is rotatably connected to the first rotating shaft fixing seat, and the other end of the traction rod is rotatably connected to the second rotating shaft fixing seat.

[0031] According to a refrigeration device of an embodiment of the third aspect of the present application, at least one of the second slider, the third slider, the fourth slider, the first connecting rod and the second connecting rod is provided with a slot for hanging the door panel.

[0032] A refrigeration device according to an embodiment of the third aspect of the present application includes:

[0033] A box body is formed with a storage space;

[0034] In the door assembly as described in any of the above items, the box door is rotatably connected to the box body and is suitable for opening or closing the storage space.

[0035] The above one or more technical solutions in the embodiments of the utility model have at least one of the following technical effects:

[0036] According to the sliding door device of the present application, an active sliding door mechanism is provided, a first guide rail and a second guide rail are provided on both sides of the first base of the active sliding door mechanism, and a first slider and a second slider are slidably provided on the first guide rail and the second guide rail respectively, and the first slider and the second slider can slide synchronously along the guide rails driven by the connecting member, and the sliding directions are opposite, the first slider and the box body are connected to the box body through the traction mechanism and the box body transmission, and the second slider is connected to the door panel provided on the outer side of the box door, so that when the box door rotates, the box body drives the two sliders to slide relative to each other through the traction mechanism and the connecting member, so as to drive the door panel to slide relative to the box door, so that the door panel can avoid obstacles on both sides during the process of the box door rotating and opening, and at the same time, the first slave sliding door mechanism and the second slave sliding door mechanism are provided to support and assist the sliding of the door panel, so that the sliding of the door panel is more stable and smooth, and the use effect is better. In addition, the third slider of the first slave sliding door mechanism and the second slider of the active sliding door mechanism are connected by the first connecting rod, and the fourth sliders of all the second slave sliding door mechanisms are connected by the second connecting rod, so that the sliding synchronization of the connected sliders is better, thereby making the sliding of the door panel more stable.

[0037] According to the door assembly of the embodiment of the present application, a sliding door device is provided on the box door, and the active sliding door mechanism of the active sliding door mechanism is respectively connected to the box door and the door panel, so that when the box door rotates to open or close relative to the box body, the box body drives the two sliders to slide relative to each other through the traction mechanism and the connecting piece, thereby driving the door panel to slide relative to the width direction of the box door, so that the door panel can avoid obstacles such as side walls and objects during the closing or opening of the box door. At the same time, by providing a first driven sliding door mechanism and a second driven sliding door mechanism to support and assist the sliding of the door panel, the sliding of the door panel is more stable and smooth, and the use effect is better. In addition, the third slider of the first driven sliding door mechanism and the second slider of the active sliding door mechanism are connected by a first connecting rod, and the fourth sliders of all the second driven sliding door mechanisms are connected by a second connecting rod, so that the sliding synchronization of the connected sliders is better, thereby making the sliding of the door panel more stable.

[0038] According to the refrigeration equipment of the embodiments of the present application, by combining the cabinet door and the door panel, when the refrigeration equipment is opened and closed, interference between the door panel and surrounding objects can be avoided, greatly improving the convenience of use. Especially in a narrow kitchen environment, this design advantage is more obvious. In addition, in the active sliding door mechanism, the slider, the guide rail, and the sliders of the active sliding door mechanism and the first driven sliding door mechanism are connected by a connecting rod, and the sliders of all the second driven sliding door mechanisms are connected to each other, enabling the door panel to move smoothly during the opening and closing processes, improving the service life and stability of the refrigerator.

[0039] Further, by providing a first ball support between the first slider and the first guide rail, and a second ball support between the second slider and the second guide rail, at least a part of the friction between the slider and the guide rail is converted into rolling friction, reducing the frictional force received by the slider and making the slider roll more smoothly.

[0040] Furthermore, by respectively providing a first support frame and a second support frame between the first slider and the first guide rail, and between the second slider and the second guide rail, to limit the first ball and the second ball, preventing the first ball and the second ball from shifting, further making the sliding of the first slider and the second slider more stable and smooth.

[0041] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments or related technologies. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0043] Figure 1 is one of the schematic diagrams of the refrigeration equipment (excluding the door panel) provided by the embodiments of the present application;

[0044] Figure 2 is the second schematic diagram of the refrigeration equipment (excluding the door panel) provided by the embodiments of the present application;

[0045] Figure 3 is the schematic diagram of the cabinet door of the refrigeration equipment provided by the embodiments of the present application being opened outwards;

[0046] Figure 4 is one of the connection schematic diagrams of the active sliding door mechanism, the first connecting rod, and the first driven sliding door mechanism provided by the embodiments of the present application;

[0047] Figure 5 It is the second connection schematic diagram of the active sliding door mechanism, the first connecting rod and the first driven sliding door mechanism provided by the embodiment of the present application;

[0048] Figure 6 It is the connection schematic diagram of two second driven sliding door mechanisms and a second connecting rod provided by the embodiment of the present application.

[0049] Reference numerals:

[0050] 1, box body; 2, box door; 21, door panel; 4, first hinge; 7, active sliding door mechanism; 701, second rotating shaft fixing seat; 702, towing rod; 705, second guide rail; 706, first connecting member; 707, second support frame; 709, second slider; 710, first guide rail; 712, second connecting member; 713, first rotating shaft fixing seat; 714, first support frame; 715, first slider; 8, first driven sliding door mechanism; 813, third slider; 814, third support frame; 817, second base; 9, second driven sliding door mechanism; 913, fourth slider; 914, fourth support frame; 917, third base; 10, first connecting rod; 11, second connecting rod. Detailed implementation manners

[0051] The following further describes in detail the implementation manners of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0052] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the embodiments of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0053] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific situations.

[0054] In the embodiments of the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0055] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0056] The following will be combined with Figures 1 to 6 Describe the sliding door device, door body assembly and refrigeration equipment of the present application. The sliding door device and door body assembly in the present application can be applied to the box door or cabinet door of household appliances, such as the box door of a refrigerator. However, it should be understood that the door panel mechanism and door body assembly in the present application can also be applied to dishwashers, washing machines or any other suitable equipment. The refrigeration equipment in the present application is applied as a refrigerator, for example. However, it should be understood that the refrigeration equipment in the present application can also be applied to freezers or any other suitable equipment.

[0057] In one embodiment of the present application, as Figures 1 to 6As shown, the sliding door device is applied to a refrigeration device, and is used to be arranged on a door 2 with a door panel 21 on the outside. The door 2 is rotatably connected to the box body 1, and the door 2 is suitable for opening or closing the storage space of the box body 1. The sliding door device includes: an active sliding door mechanism 7, a first driven sliding door mechanism 8, a first connecting rod 10, at least two second driven sliding door mechanisms 9 and a second connecting rod 11. The active sliding door mechanism 7 includes a first base, a traction mechanism, a first slider 715, a second slider 709 and a connecting member. A first guide rail 710 is formed on one side of the first base, and a second guide rail 705 is formed on the other side. The first slider 715 is slidably arranged on the first guide rail 710, and the first slider 715 is transmission-connected to the box body 1 through the traction mechanism; the second slider 709 is slidably arranged on the second guide rail 705. The two ends of the connecting member are respectively connected to the first slider 715 and the second slider 709. The first driven sliding door mechanism 8 includes a second base 817 and a third slider 813; a third guide rail is formed on the second base 817, and the third slider 813 is slidably disposed on the third guide rail, and the first connecting rod 10 is connected to the second slider 709 and the third slider 813. The second driven sliding door mechanism 9 includes a third base 917 and a fourth slider 913; a fourth guide rail is formed on the third base 917, and the fourth slider 913 is slidably disposed on the fourth guide rail; the first base, the second base 817 and the third base 917 are all used to be disposed on the box door 2; the second connecting rod 11 is connected to all the fourth sliders 913 therein, and the second slider 709, the third slider 813 and all the fourth sliders 913 are all used to be connected to the door panel 21, so as to drive the door panel 21 to move relative to the width direction of the box door 2 during the process of opening or closing the box door 2.

[0058] It is understandable that the width direction of the door 2 is parallel to the plane where the door 2 is located and perpendicular to the rotation axis of the door 2, so that the door panel 21 can be away from or close to the rotation axis of the door 2 (such as Figure 3 It should be noted that the parallel and perpendicular relationship of the present application needs to take into account the installation error between the various components, and the error of plus or minus 10° should be understood as the scope of protection of the patent.

[0059] It is understandable that if Figures 1 to 3 As shown, the active sliding door mechanism 7 of this embodiment can be arranged on the box door 2, the first slider 715 is connected to the box body 1 through a traction mechanism, and the second slider 709 is slidably connected to the door panel 21 arranged on the outside of the box door 2, so that when the box door 2 rotates, the two sliders slide relative to each other to drive the door panel 21 to slide relative to the box door 2, so that the door panel 21 can avoid obstacles on both sides when the box door 2 is turned on and off.

[0060] Specifically, the first base of this embodiment can be arranged on the door 2. The connecting member can be a connecting component such as a towing rope or a transmission belt. The two ends of the connecting member are respectively connected to the first slider 715 and the second slider 709, so that the first slider 715 can drive the second slider 709 to move synchronously, and further drive the door panel 21 to slide relative to the door 2.

[0061] By reasonably setting the extension direction of the connecting member, the movement directions of the first slider 715 and the second slider 709 are opposite during movement, so as to drive the door panel 21 to avoid obstacles.

[0062] Specifically, during the process of the door 2 rotating and opening towards the outside of the cabinet 1, the cabinet 1 drives the first slider 715 to slide towards the direction close to the first hinge 4 through the traction mechanism. At the same time, the first slider 715 drives the second slider 709 to slide in the opposite direction (i.e., away from the first hinge 4) through the connecting member, so as to prevent the door panel 21 from interfering with the obstacles outside. During the process of the door 2 rotating and closing towards one side of the cabinet 1, the cabinet 1 drives the first slider 715 to slide away from the first hinge 4 through the traction mechanism. At the same time, the first slider 715 drives the second slider 709 to slide in the opposite direction (i.e., close to the first hinge 4) through the connecting member, so as to prevent the door panel 21 from interfering with the obstacles after closing.

[0063] At the same time, the third slider 813 of the first driven sliding door mechanism 8 can slide along the third guide rail. The third slider 813 is connected to the door panel 21. The third slider 813 can slide along with the door panel 21, playing a role in supporting and assisting the sliding of the door panel 21, and cooperating with the active sliding door mechanism 7 to limit the movement direction of the door panel 21, preventing the door panel 21 from shaking during movement. In addition, the third slider 813 and the second slider 709 are connected by a first connecting rod 10 to increase the synchronization of the sliding of the third slider 813 and the second slider 709, making the sliding of the door panel 21 more stable.

[0064] Similarly, the fourth slider 913 of the second driven sliding door mechanism 9 can slide along the fourth guide rail. The fourth slider 913 is connected to the door panel 21. The fourth slider 913 can slide along with the door panel 21, playing a role in supporting and assisting the sliding of the door panel 21, and cooperating with the active sliding door mechanism 7 and the first driven sliding door mechanism 8 to limit the movement direction of the door panel 21, preventing the door panel 21 from shaking during movement. In addition, the fourth sliders 913 of all the second driven sliding door mechanisms 9 are connected to each other by a second connecting rod 11 to increase the synchronization of the sliding of the fourth sliders 913 of all the second driven sliding door mechanisms 9, making the sliding of the door panel 21 more stable.

[0065] According to the sliding door device of the embodiment of the present application, the box door 2 is rotatably connected to the box body 1, the door panel 21 is slidably arranged on the outside of the box door 2, and an active sliding door mechanism 7 is arranged on the box door 2. The active sliding door mechanism 7 is respectively connected to the box door 2 and the door panel 21, so as to drive the door panel 21 to slide in the width direction of the box door 2 during the process of the box door 2 rotating relative to the box body 1 to open or close, so that the door panel 21 can avoid obstacles such as side walls and objects during the closing or opening process of the box door 2, to meet the usage requirements of users in different scenarios. At the same time, by arranging the first driven sliding door mechanism 8 and the second driven sliding door mechanism 9 to support and assist the sliding of the door panel 21, the sliding of the door panel 21 is more stable and smooth, and the use effect is better. In addition, the third slider 813 of the first driven sliding door mechanism 8 and the second slider 709 of the active sliding door mechanism 7 are connected by a first connecting rod 10, and the fourth sliders 913 of all the second driven sliding door mechanisms 9 are connected by a second connecting rod 11, so that the sliding synchronism of the connected sliders is better, and thus the sliding of the door panel 21 is more stable.

[0066] It should be noted that in practical applications, the designs of the first slider 715, the second slider 709 and other sliders in the present application can be flexible and variable to adapt to different working scenarios and performance requirements. They are not limited to specific shapes, sizes or materials, but can be customized and optimized according to specific needs.

[0067] From the perspective of materials, the first slider 715, the second slider 709 and other sliders in the present application can select materials with high wear resistance, low friction coefficient and good stability, such as metal alloys, engineering plastics or special lubricating materials. The selection of these materials aims to improve the durability of the sliders, reduce wear and noise during the sliding process, and ensure the smoothness of the sliding.

[0068] In terms of structural design, the first slider 715, the second slider 709 and other sliders in the present application can adopt various forms of guide rail contact surfaces, such as plane contact, ball contact or sliding bearing contact, etc. These different contact methods have their own advantages and disadvantages. For example, ball contact can reduce friction and wear, but the cost is relatively high; while plane contact has a simple structure, but may require more frequent lubrication and maintenance. Therefore, when choosing, factors such as usage conditions, cost-effectiveness and maintenance convenience should be comprehensively considered.

[0069] In an embodiment of the present application, as Figure 4 and Figure 5 shown, the connecting piece includes: a first connecting piece 706 and a second connecting piece 712. The first connecting piece 706 bypasses one end of the first base, and the two ends are respectively connected to one end of the first slider 715 and the second slider 709; the second connecting piece 712 bypasses the other end of the first base, and the two ends are respectively connected to the other end of the first slider 715 and the second slider 709.

[0070] In this embodiment, by bypassing one end of the first base with the first connecting member 706 and connecting it to the first slider 715 and the second slider 709 respectively, when the first slider 715 slides away from this end of the first base driven by the box body 1 and the traction mechanism, the first slider 715 drives the second slider 709 to slide towards this end of the first base through the first connecting member 706; meanwhile, by bypassing the other end of the first base with the second connecting member 712 and connecting it to the first slider 715 and the second slider 709 respectively, when the first slider 715 slides away from this other end of the first base driven by the box body 1 and the traction mechanism, the first slider 715 drives the second slider 709 to slide towards this other end of the first base through the second connecting member 712, so that when the first slider 715 slides towards both ends of the first base respectively, it can drive the second slider 709 to slide in the opposite direction to the first slider 715, and further enable the door panel 21 to slide relative to the box door 2 as the box door 2 rotates when the box door 2 opens and closes, so as to avoid interference with obstacles and affect the opening and closing of the box door 2.

[0071] Optionally, in some embodiments of the present application, such as Figure 1 、 Figure 2 、 Figure 4 and Figure 5 shown, the active sliding door mechanism 7 further includes: a first ball support member and a second ball support member. The first ball support member is slidably internally connected to the first guide rail 710, and the first slider 715 is slidably internally connected to the first ball support member. The second ball support member is slidably internally connected to the corresponding second guide rail 705, and the second slider 709 is slidably internally connected to the second ball support member.

[0072] In this embodiment, by arranging the first ball support member between the first slider 715 and the first guide rail 710, the first ball support member can slide along the first guide rail 710 as the first slider 715 slides, so as to maintain between the first slider 715 and the first guide rail 710. The first ball support member can convert at least part of the friction between the first slider 715 and the first guide rail 710 into rolling friction, making the sliding of the first slider 715 smoother; similarly, the second ball support member is slidably arranged between the second slider 709 and the second guide rail 705, and can convert at least part of the friction between the second slider 709 and the second guide rail 705 into rolling friction, making the sliding of the second slider 709 smoother, thereby making the relative sliding between the box door 2 and the door panel 21 smoother.

[0073] Specifically, in one embodiment of the present application, such as Figure 4 and Figure 5As shown in the figure, the first ball support member includes: a first ball (not shown in the figure) and a first support frame 714; the second ball support member includes: a second ball (not shown in the figure) and a second support frame 707. A first limiting notch is formed on the first support frame 714, the first ball is rotatably disposed in the corresponding first limiting notch, one side of the first ball abuts against the corresponding first guide rail 710, and the other side of the first ball passes through the corresponding first limiting notch and abuts against the first slider 715. A second limiting notch is formed on the second support frame 707, the second ball is rotatably disposed in the corresponding second limiting notch, one side of the second ball abuts against the corresponding second guide rail 705, and the other side of the second ball passes through the corresponding second limiting notch and abuts against the second slider 709.

[0074] In this embodiment, a first support frame 714 is disposed between the first slider 715 and the first guide rail 710. A first limiting notch is formed on the first support frame 714 to dispose the first ball, so as to limit the first ball and prevent the first ball from rolling and shifting, making the sliding of the first slider 715 more stable and reliable. Both sides of the first ball respectively abut against the first guide rail 710 and the first slider 715. When the first slider 715 rolls relative to the first guide rail 710, the first ball can roll to convert at least part of the friction received by the first slider 715 into rolling friction, making the sliding of the first slider 715 smoother. Similarly, a second support frame 707 is disposed between the second slider 709 and the second guide rail 705. A second limiting notch is formed on the second support frame 707 to dispose the second ball, so as to limit the second ball and prevent the second ball from rolling and shifting, making the sliding of the second slider 709 more stable and reliable. Both sides of the second ball respectively abut against the second guide rail 705 and the second slider 709. When the second slider 709 rolls relative to the second guide rail 705, the second ball can roll to convert at least part of the friction received by the second slider 709 into rolling friction, making the sliding of the second slider 709 smoother.

[0075] Optionally, a plurality of first balls and second balls are both provided.

[0076] Optionally, in an embodiment of the present application, as Figure 4 and Figure 5 shown, the first support frame 714 is provided with first limiting notches on both opposite sides corresponding to the first guide rail 710. There are two groups of first balls, and the two groups of first balls are respectively disposed in the first limiting notches on both sides to rotatably abut against both sides of the corresponding first slider 715. The second support frame 707 is provided with second limiting notches on both opposite sides corresponding to the second guide rail 705. There are two groups of second balls, and the two groups of second balls are respectively disposed in the second limiting notches on both sides to rotatably abut against both sides of the corresponding second slider 709.

[0077] In this embodiment, by arranging the first limiting notch on both sides of the first slider 715, two groups of first balls are respectively rotatably arranged on both sides of the first slider 715 and are respectively in contact with the first slider 715 and the first guide rail 710. While converting at least part of the friction received by the first slider 715 into rolling friction, the forces on both sides of the first slider 715 can be made more balanced, making the sliding of the first slider 715 relative to the first guide rail 710 more stable and smooth. Similarly, two groups of second balls are also respectively rotatably arranged on both sides of the second slider 709. While converting at least part of the friction received by the second slider 709 into rolling friction, the forces on both sides of the second slider 709 can be made more balanced, making the sliding of the second slider 709 relative to the second guide rail 705 more stable and smooth.

[0078] Specifically, in an embodiment of the present application, as Figure 4 and Figure 5 shown, the first driven sliding door mechanism 8 further includes a third ball support member. The third ball support member is slidably internally connected to the third guide rail, and the third slider 813 is slidably internally connected to the third ball support member.

[0079] In this embodiment, by arranging a third ball support member between the third slider 813 and the third guide rail, the third ball support member can slide along the third guide rail as the third slider 813 slides to remain between the third slider 813 and the third guide rail. The third ball support member can convert at least part of the friction between the third slider 813 and the third guide rail into rolling friction, making the sliding of the third slider 813 smoother.

[0080] Specifically, in an embodiment of the present application, as Figure 4 shown, the third ball support member includes: a third ball (not shown in the figure) and a third support frame 814. A third limiting notch is formed on the third support frame 814. The third ball is rotatably arranged in the corresponding third limiting notch. One side of the third ball is in contact with the corresponding third guide rail, and the other side of the third ball passes through the third limiting notch and is in contact with the third slider 813.

[0081] In this embodiment, a third support frame 814 is arranged between the third slider 813 and the third guide rail. A third limiting notch is formed on the third support frame 814 to arrange the third ball to limit the third ball and prevent the third ball from rolling and shifting, making the sliding of the third slider 813 more stable and reliable. Both sides of the third ball are respectively in contact with the third guide rail and the third slider 813. When the third slider 813 rolls relative to the third guide rail, the third ball can roll to convert at least part of the friction received by the third slider 813 into rolling friction, making the sliding of the third slider 813 smoother.

[0082] Optionally, in an embodiment of the present application, as Figure 4As shown, third support frames 814 are each provided with third limit notches on both sides opposite to the third guide rails. There are two sets of third balls, and the two sets of third balls are respectively arranged in the third limit notches on both sides to rollingly abut against both sides of the corresponding third sliders 813.

[0083] In this embodiment, by arranging the third limit notches on both sides of the third slider 813, the two sets of third balls are respectively rotatably arranged on both sides of the third slider 813 and respectively abut against the third slider 813 and the third guide rail. While converting at least part of the friction received by the third slider 813 into rolling friction, the forces on both sides of the third slider 813 can be made more balanced, making the sliding of the third slider 813 relative to the third guide rail more stable and smooth.

[0084] Specifically, in an embodiment of the present application, as Figure 6 shown, each second driven sliding door mechanism 9 further includes a fourth ball support member. The fourth ball support member is slidably internally connected to the fourth guide rail, and the fourth slider 913 is slidably internally connected to the fourth ball support member.

[0085] In this embodiment, by arranging a fourth ball support member between the fourth slider 913 and the fourth guide rail, the fourth ball support member can slide along the fourth guide rail as the fourth slider 913 slides to remain between the fourth slider 913 and the fourth guide rail. The fourth ball support member can convert at least part of the friction between the fourth slider 913 and the fourth guide rail into rolling friction, making the sliding of the fourth slider 913 smoother.

[0086] Specifically, in an embodiment of the present application, as Figure 6 shown, the fourth ball support member includes: fourth balls (not shown in the figure) and a fourth support frame 914. The fourth support frame 914 is formed with fourth limit notches, and the fourth balls are rollingly arranged in the corresponding fourth limit notches. One side of the fourth balls abuts against the corresponding fourth guide rail, and the other side of the fourth balls passes through the fourth limit notches and abuts against the fourth slider 913.

[0087] In this embodiment, a fourth support frame 914 is arranged between the fourth slider 913 and the fourth guide rail. The fourth support frame 914 is formed with fourth limit notches to arrange the fourth balls to limit the fourth balls and prevent the fourth balls from rolling and shifting, making the sliding of the fourth slider 913 more stable and reliable. Both sides of the fourth balls respectively abut against the fourth guide rail and the fourth slider 913. When the fourth slider 913 rolls relative to the fourth guide rail, the fourth balls can roll to convert at least part of the friction received by the fourth slider 913 into rolling friction, making the sliding of the fourth slider 913 smoother.

[0088] Optionally, in an embodiment of the present application, as Figure 6As shown, on both sides of the fourth support frame 914 corresponding to the opposite sides of the fourth guide rail, there are fourth limit notches. There are two sets of fourth balls, and the two sets of fourth balls are respectively arranged in the fourth limit notches on both sides to rollingly abut against both sides of the corresponding fourth slider 913.

[0089] In this embodiment, by arranging the fourth limit notches on both sides of the fourth slider 913, the two sets of fourth balls are respectively rotatably arranged on both sides of the fourth slider 913 and respectively abut against the fourth slider 913 and the fourth guide rail. While converting at least part of the friction received by the fourth slider 913 into rolling friction, it can also make the forces on both sides of the fourth slider 913 more balanced, making the fourth slider 913 slide more stably and smoothly relative to the fourth guide rail.

[0090] In an embodiment of another aspect of the present application, as Figures 1 to 6 shown, a door body assembly is provided, including: a box door 2, a door panel 21, and a sliding door device provided in any of the above embodiments. The box door 2 is rotatably connected to the box body 1 and is adapted to open or close the storage space of the box body 1. The door panel 21 is slidably arranged outside the box door 2; the sliding door device is arranged on the box door 2, the first slider 715 is drivingly connected to the box body 1 through a traction mechanism, and the second slider 709, the third slider 813, and the fourth slider 913 are all connected to the door panel 21. During the process of the box door 2 opening or closing, the first slider 715 moves in the opposite direction to the second slider 709, the third slider 813, and the fourth slider 913 to drive the door panel 21 to move in the width direction of the box door 2.

[0091] In this embodiment, during the process of the box door 2 rotating outward and opening relative to the box body 1 (as shown by the arc arrow in Figure 3 ), the first slider 715 slides in the direction close to the first hinge 4 under the drive of the box body 1 and the traction mechanism. The first slider 715 drives the second slider 709 to slide in the direction away from the first hinge 4 through a connecting member, thereby driving the door panel 21 to slide in the direction away from the first hinge 4, and further avoiding interference between the door panel 21 and external obstacles. Similarly, during the process of the box door 2 rotating and closing towards one side of the box body 1, the active sliding door mechanism 7 drives the door panel 21 to slide in the direction close to the first hinge 4, thereby avoiding interference between the door panel 21 and obstacles after closing.

[0092] Meanwhile, during the sliding process of the door panel 21, the third slider 813 of the first driven sliding door mechanism 8 and the fourth slider 913 of the second driven sliding door mechanism 9 can slide along with the door panel 21 to support and assist the sliding of the door panel 21. In addition, the third slider 813 of the first driven sliding door mechanism 8 and the second slider 709 of the active sliding door mechanism 7 are connected by a first connecting rod 10, and all the fourth sliders 913 of the second driven sliding door mechanisms 9 are connected by a second connecting rod 11, so that the sliding synchronization of the connected sliders is better, and thus the sliding of the door panel 21 is more stable.

[0093] For the door body assembly according to the embodiment of the present application, a sliding door device is provided on the box door 2. The sliding door device includes an active sliding door mechanism 7, and the active sliding door mechanism 7 is respectively connected to the box door 2 and the door panel 21. During the process of the box door 2 rotating relative to the box body 1 to open or close, the active sliding door mechanism 7 drives the door panel 21 to slide in the width direction of the box door 2, so that the door panel 21 can avoid obstacles such as side walls and objects during the closing or opening process of the box door 2. Meanwhile, by providing the first driven sliding door mechanism 8 and the second driven sliding door mechanism 9 to support and assist the sliding of the door panel 21, the sliding of the door panel 21 is more stable and smooth, and the use effect is better. In addition, the third slider 813 of the first driven sliding door mechanism 8 and the second slider 709 of the active sliding door mechanism 7 are connected by a first connecting rod 10, and all the fourth sliders 913 of the second driven sliding door mechanisms 9 are connected by a second connecting rod 11, so that the sliding synchronization of the connected sliders is better, and thus the sliding of the door panel 21 is more stable.

[0094] It can be understood that if the sliding door device has the beneficial effects of the above embodiment, the door body assembly correspondingly has the beneficial effects of the above embodiment. The specific implementation manner can refer to the above embodiment, and details are not described herein again.

[0095] In an embodiment of the present application, as Figure 4 shown, the traction mechanism includes a traction rod 702, a first rotating shaft fixing seat 713 and a second rotating shaft fixing seat 701. The first rotating shaft fixing seat 713 is connected to the first slider 715, the second rotating shaft fixing seat 701 is used for connecting to the box body 1, one end of the traction rod 702 is rotatably connected to the first rotating shaft fixing seat 713, and the other end of the traction rod 702 is rotatably connected to the second rotating shaft fixing seat 701.

[0096] In this embodiment, by fixing the first rotating shaft fixing seat 713 and the second rotating shaft fixing seat 701 to the first slider 715 and the box body 1 respectively, and connecting them through a traction rod 702 between the first rotating shaft fixing seat 713 and the second rotating shaft fixing seat 701, the distance between the first slider 715 and the second rotating shaft fixing seat 701 is always kept unchanged. When the box door 2 rotates relative to the box body 1, the angle between the box body 1 and the box door 2 changes. Thus, the first slider 715 is pulled through the transmission connection of the traction rod 702, the first rotating shaft fixing seat 713 and the second rotating shaft fixing seat 701, so that the first slider 715 slides on the base and drives the second slider 709 to slide to realize the movement of the door panel 21 relative to the box door 2.

[0097] In one embodiment of the present application, as Figures 4 to 6 shown, at least one of the second slider 709, the third slider 813, the fourth slider 913, the first connecting rod 10 and the second connecting rod 11 is provided with a slot for hanging the door panel 21.

[0098] In this embodiment, by providing a slot for hanging the door panel 21 on at least one of the second slider 709, the third slider 813, the fourth slider 913, the first connecting rod 10 and the second connecting rod 11, it is convenient for the user to hang the door panel 21 on the sliding door device so that the door panel 21 can slide relative to the box body 1 under the drive of the sliding door device.

[0099] In another embodiment of the present application, as Figure 1 、 Figure 2 and Figure 3 shown, a refrigeration device is provided, including: a box body 1 and a door body assembly as provided in any of the above embodiments. Among them, the box body 1 forms a storage space, and the box door 2 is rotatably connected to the box body 1 and is adapted to open or close the storage space.

[0100] In this embodiment, the door body assembly includes: a box door 2, a door panel 21 and a sliding door device. The sliding door device includes a main sliding door mechanism 7, a first driven sliding door mechanism 8 and at least two second driven sliding door mechanisms 9. The main sliding door mechanism 7 is arranged on the box door 2 and is configured to drive the door panel 21 to move in the width direction of the box door 2 during the opening or closing process of the box door 2. The first driven sliding door mechanism 8 and the second driven sliding door mechanisms 9 can assist the sliding of the door panel 21.

[0101] The third slider 813 of the first driven sliding door mechanism 8 is connected to the second slider 709 of the main sliding door mechanism 7 through the first connecting rod 10, and the fourth sliders 913 of all the second driven sliding door mechanisms 9 are connected through the second connecting rod 11, so that the sliding synchronization of the connected sliders is better, and thus the sliding of the door panel 21 is more stable.

[0102] By providing a door panel 21 on the door 2 of the cabinet, when the refrigeration device is built-in and installed in a groove-shaped space or between two cabinets, the door panel 21 can be set flush with the side wall of the groove or the cabinets on both sides, so as to reduce the gap between the refrigeration device and the adjacent wall or cabinet, making it more aesthetically pleasing.

[0103] At the same time, when the door 2 rotates, the active sliding door mechanism 7 can drive the door panel 21 to move relative to the door 2 during the rotation of the door 2 to move as far away as possible from obstacles such as the wall or cabinet on the side of the door of the cabinet body 1, so as to prevent these obstacles from blocking the door panel 21 and affecting the rotation of the door 2, resulting in the door 2 being unable to be opened or closed normally.

[0104] The combination of the door 2 and the door panel 21 enables the refrigeration device to avoid interference between the door panel 21 and surrounding objects when opening and closing, greatly improving the convenience of use. Especially in a narrow kitchen environment, this design advantage is more obvious. In addition, the setting of the slider and guide rail in the active sliding door mechanism 7, and connecting the third slider 813 of the first driven sliding door mechanism 8 and the second slider 709 of the active sliding door mechanism 7 through the first connecting rod 10, and connecting all the fourth sliders 913 of the second driven sliding door mechanism 9 through the second connecting rod 11, enables the door panel 21 to move smoothly during the opening and closing process, improving the service life and stability of the refrigerator.

[0105] It can be understood that if the door body assembly has the beneficial effects of the above embodiments, the refrigeration device correspondingly has the beneficial effects of the above embodiments. The specific implementation manners can refer to the above embodiments, and will not be elaborated in this application.

[0106] It can be understood that there can be multiple storage spaces.

[0107] It can be understood that the multiple storage spaces can be arranged arbitrarily, such as arranged vertically or horizontally. The multiple storage spaces can set storage conditions according to storage needs. For example, some storage spaces are set as refrigerating chambers, and another part of the storage spaces are set as freezing chambers.

[0108] As Figure 3 shown, based on an application scenario of the above embodiment: The refrigeration device can be installed in a groove-shaped structure in the middle of a cabinet. A door panel 21 is provided on the outer side of the door 2 of the cabinet body 1 of the refrigeration device. The material and color of the door panel 21 can be designed to be similar to or the same as the material color of the outer wall of the cabinet. When the door 2 is closed, the door panel 21 is flush with the outer wall of the cabinet at the opening edge of the groove-shaped structure and fits as closely as possible to the opening of the groove-shaped structure, so that the door panel 21 and the outer wall of the cabinet can maintain visual consistency and have a small gap, making it more aesthetically pleasing.

[0109] When the cabinet door 2 rotates outward to open, the active sliding door mechanism 7 drives the door panel 21 to slide away from the first hinge 4 to prevent the door panel 21 from interfering with the cabinet wall on the side close to the first hinge 4, resulting in the cabinet door 2 being unable to open to a larger angle. When the cabinet door 2 rotates to close, the active sliding door mechanism 7 drives the door panel 21 to slide towards the first hinge 4 to prevent the door panel 21 from interfering with the cabinet wall on the side away from the first hinge 4, resulting in the cabinet door 2 being unable to close completely and affecting the refrigeration preservation effect in the storage space. And when the cabinet door 2 is completely closed, the door panel 21 can return to a state flush with the cabinet body again.

[0110] In an embodiment of the present application, the cabinet body 1 has a first storage space and a second storage space. There are two door body assemblies, namely the first door body assembly and the second door body assembly. The cabinet door 2 of the first door body assembly is rotatably connected to the cabinet body 1 to open or close the first storage space, and the cabinet door 2 of the second door body assembly is rotatably connected to the cabinet body 1 to open or close the second storage space.

[0111] In this embodiment, by providing the first storage space and the second storage space on the cabinet body 1, the items to be stored are stored separately according to requirements. The first storage space and the second storage space are respectively provided with the first door body assembly and the second door body assembly, so that when the cabinet doors 2 of the first door body assembly and the second door body assembly are rotated to open and close, the corresponding door panels 21 can slide relative to the cabinet door 2 to avoid obstacles.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should all be covered by the scope of the claims of the present invention.

Claims

1. A sliding door device, characterized in that, Applicable to refrigeration equipment, used for being arranged on a cabinet door (2) provided with a door panel (21) on the outer side, the cabinet door (2) being rotatably connected to the cabinet body (1), and the cabinet door (2) being suitable for opening or closing the storage space of the cabinet body (1); The sliding door device comprises: An active sliding door mechanism (7) comprises: a first base, a traction mechanism, a first slider (715), a second slider (709) and a connecting member; a first guide rail (710) is formed on one side of the first base, and a second guide rail (705) is formed on the other side; the first slider (715) is slidably arranged on the first guide rail (710), and the first slider (715) is transmission-connected to the box (1) through the traction mechanism; the second slider (709) is slidably arranged on the second guide rail (705); and two ends of the connecting member are respectively connected to the first slider (715) and the second slider (709); A first driven sliding door mechanism (8) and a first connecting rod (10), wherein the first driven sliding door mechanism (8) comprises a second base (817) and a third sliding block (813); a third guide rail is formed on the second base (817), the third sliding block (813) is slidably disposed on the third guide rail, and the first connecting rod (10) is connected to the second sliding block (709) and the third sliding block (813); At least two second driven sliding door mechanisms (9) and a second connecting rod (11), wherein the second driven sliding door mechanism (9) comprises a third base (917) and a fourth sliding block (913); a fourth guide rail is formed on the third base (917), and the fourth sliding block (913) is slidably disposed on the fourth guide rail; The first base, the second base (817) and the third base (917) are all used to be arranged on the box door (2); the second connecting rod (11) is connected to all the fourth sliders (913) therein, and the second slider (709), the third slider (813) and all the fourth sliders (913) are all used to be connected to the door panel (21) so as to drive the door panel (21) to move in the width direction relative to the box door (2) during the process of opening or closing the box door (2).

2. The sliding door device according to claim 1, characterized in that, The active sliding door mechanism (7) further comprises: A first ball bearing support member is slidably inscribed in the first guide rail (710), and the first sliding block (715) is slidably inscribed in the first ball bearing support member; The second ball bearing support member is slidably inscribed in the second guide rail (705), and the second sliding block (709) is slidably inscribed in the second ball bearing support member.

3. The sliding door device according to claim 2, characterized in that, The first ball support component comprises: a first ball and a first support frame (714); the second ball support component comprises: a second ball and a second support frame (707); A first limiting notch is formed on the first support frame (714), the first ball is rotatably arranged in the first limiting notch, one side of the first ball abuts against the first guide rail (710), and the other side of the first ball passes through the first limiting notch and abuts against the first slider (715); A second limiting notch is formed on the second support frame (707), the second ball is rotatably arranged in the second limiting notch, one side of the second ball abuts against the second guide rail (705), and the other side of the second ball passes through the second limiting notch and abuts against the second slider (709).

4. The sliding door device according to claim 2 or 3, characterized in that, The first driven sliding door mechanism (8) further includes: A third ball support member, which is slidably internally connected to the third guide rail, and the third slider (813) is slidably internally connected to the third ball support member.

5. The sliding door device according to claim 4, characterized in that, The third ball support member includes: a third ball and a third support frame (814); A third limiting notch is formed on the third support frame (814), the third ball is rotatably arranged in the third limiting notch, one side of the third ball abuts against the third guide rail, and the other side of the third ball passes through the third limiting notch and abuts against the third slider (813).

6. The sliding door device according to claim 1, characterized in that, Each of the second driven sliding door mechanisms (9) further includes: A fourth ball support member, which is slidably internally connected to the fourth guide rail, and the fourth slider (913) is slidably internally connected to the fourth ball support member.

7. A door body assembly, characterized in that, Comprising: A box door (2), which is rotatably connected to a box body (1) and is adapted to open or close the storage space of the box body (1); A door panel (21), which is slidably arranged on the outer side of the box door (2); and, The sliding door device according to any one of claims 1-6, the sliding door device is arranged on the box door (2), the first slider (715) is in transmission connection with the box body (1) through the traction mechanism, and the second slider (709), the third slider (813) and the fourth slider (913) are all connected to the door panel (21); During the opening or closing process of the box door (2), the first slider (715) moves in the opposite direction to the second slider (709), the third slider (813) and the fourth slider (913) to drive the door panel (21) to move in the width direction of the box door (2).

8. The door body assembly according to claim 7, wherein The traction mechanism includes a traction rod (702), a first rotating shaft fixing seat (713) and a second rotating shaft fixing seat (701); The first rotating shaft fixing seat (713) is connected to the first slider (715), the second rotating shaft fixing seat (701) is used for connecting to the box body (1), one end of the traction rod (702) is rotatably connected to the first rotating shaft fixing seat (713), and the other end of the traction rod (702) is rotatably connected to the second rotating shaft fixing seat (701).

9. The door body assembly according to claim 8, wherein, At least one of the second slider (709), the third slider (813), the fourth slider (913), the first connecting rod (10), and the second connecting rod (11) is provided with a slot for hanging the door panel (21).

10. A refrigeration device, characterized in that, Comprising: A box body (1) forming a storage space; The door assembly according to any one of claims 7-9, wherein the box door (2) is rotatably connected to the box body (1) and is adapted to open or close the storage space.