Door assembly of refrigeration equipment and refrigeration equipment

Abstract

The utility model relates to the technical field of household appliances, and provides a door assembly of refrigeration equipment and the refrigeration equipment, and the door assembly of the refrigeration equipment comprises a door body, a sliding door mechanism, a decorative plate and a first elastic piece. One end of the door body is suitable for being rotationally connected to a box body of the refrigeration equipment; the sliding door mechanism is installed on the door body and comprises a second sliding block, and the second sliding block is connected to the door body in a sliding mode; the decorative plate is slidably connected to the door body; the first elastic piece is connected with the second sliding block and the decorative plate; in the door opening process, the door body is suitable for driving the second sliding block to slide and compressing the first elastic piece so as to push the decorative plate to move towards the rotating side away from the door body. According to the door assembly, in the door opening process, the sliding door mechanism can compress the first elastic piece, due to the action of elastic force, the first elastic piece pushes the decorative plate to move towards the rotating side away from the door body, the decorative plate can slide relative to the door body, and therefore interference of opening and closing of the door assembly is avoided.

Description

Technical Field

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

[0002] In today's society, the rapid progress of technology has greatly promoted the transformation of home living styles. Among them, as a design concept that combines beauty and practicality, built-in furniture is favored by the majority of consumers. By skillfully integrating electrical appliances or storage spaces into the home environment, built-in furniture not only effectively saves space but also significantly improves the overall coordination and aesthetics of the home. Taking an embedded refrigerator as an example, this design enables the refrigerator to be seamlessly embedded in the cabinet, perfectly integrating with the kitchen decoration style and creating a modern and harmonious living environment. However, although the embedded refrigerator shows significant advantages in enhancing home aesthetics and space utilization, there is still a problem that cannot be ignored in its actual use: that is, the refrigerator door is prone to interference or collision with the side wall of the cabinet during the opening process, resulting in a poor use experience of the embedded refrigerator. Summary of the Utility Model

[0003] This application aims to solve at least one of the technical problems existing in the related art. For this purpose, this application proposes a door assembly and a refrigeration device to solve the defect that in the existing refrigeration device, interference is likely to occur with the side wall of the cabinet during the door opening process, affecting the use experience.

[0004] This application also proposes a refrigeration device.

[0005] The door assembly according to the first aspect embodiment of this application includes:

[0006] A door body, one end of the door body is adapted to be rotatably connected to a box body;

[0007] A sliding door mechanism, installed on the door body, the sliding door mechanism includes a second slider, and the second slider is slidably connected to the door body;

[0008] A decorative panel, slidably connected to the door body;

[0009] A first elastic member, connecting the second slider and the decorative panel;

[0010] During the door opening process, the door body is adapted to drive the second slider to slide and compress the first elastic member to push the decorative panel to move away from the rotating side of the door body.

[0011] For the door assembly according to the embodiment of this application, during the door opening process, the sliding door mechanism can compress the first elastic member. Due to the action of the elastic force, the first elastic member pushes the decorative panel to move away from the rotating side of the door body, and the decorative panel can slide relative to the door body, thereby avoiding the interference of the opening and closing of the door assembly.

[0012] According to an embodiment of the present application, a convex block protrudes from one side of the second slider facing the decorative plate. The decorative plate is provided with a first connecting seat, and the first elastic member connects the convex block and the first connecting seat.

[0013] According to an embodiment of the present application, the door assembly further includes a second elastic member. The decorative plate is further provided with a second connecting seat. The second elastic member connects the convex block and the second connecting seat, and the first connecting seat and the second connecting seat are located on opposite sides of the convex block.

[0014] According to an embodiment of the present application, the first connecting seat forms a first installation cavity, and at least a part of the first elastic member is disposed through the installation cavity;

[0015] And / or, the second connecting seat forms a second installation cavity, and at least a part of the second elastic member is disposed through the second installation cavity.

[0016] According to an embodiment of the present application, the central axes of the first elastic member and the second elastic member are located on the same axis.

[0017] According to an embodiment of the present application, the sliding door mechanism further includes:

[0018] A first slider slidably mounted on the door body;

[0019] A connecting rod, one end of which is rotatably connected to the first slider and the other end is rotatably connected to the box body;

[0020] A transmission member, which is in transmission connection with the first slider and the second slider. When opening the door, the connecting rod rotates to drive the first slider to slide, and drives the second slider to slide in a direction away from the rotating side through the transmission member.

[0021] According to an embodiment of the present application, both the first slider and the second slider are provided with tooth grooves. The transmission member includes:

[0022] A first gear meshing with the first slider;

[0023] A second gear meshing with the second slider;

[0024] A transmission gear in transmission connection with the first gear and the second gear.

[0025] According to an embodiment of the present application, the first slider and the second slider are located on opposite sides of the transmission member, and the first slider and the second slider are arranged in parallel.

[0026] According to an embodiment of the present application, the door body includes a plate body and a mounting portion. An installation space for the sliding door mechanism is formed between the plate body and the mounting portion. A third slide rail is installed on one side of the mounting portion facing the decorative panel, and the decorative panel is slidably connected to the third slide rail.

[0027] The refrigeration device according to the embodiment of the second aspect of the present application includes a box body and the above-mentioned door assembly. The box body forms a containing space, and the door assembly is rotatably arranged on the box body to open or close the containing space.

[0028] Additional aspects and advantages of the present application 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 application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application 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 application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] Figure 1 is one of the schematic structural diagrams of the door assembly provided by the embodiment of the present application.

[0031] Figure 2 is Figure 1 the sectional structural view of the door assembly provided by the embodiment in the A-A direction.

[0032] Figure 3 is the second schematic structural diagram of the door assembly provided by the embodiment of the present application.

[0033] Figure 4 is the schematic structural diagram of the refrigeration device provided by the embodiment of the present application.

[0034] Reference numerals:

[0035] 100, door body; 110, plate body; 120, mounting portion; 130, first slide rail; 140, second slide rail;

[0036] 200, sliding door mechanism; 210, first slider; 220, second slider; 221, convex block; 230, connecting rod; 240, transmission component; 241, first gear; 242, second gear; 243, transmission gear;

[0037] 310, first elastic member; 320, second elastic member;

[0038] 400, Decorative panel; 410, First connection seat; 411, First installation cavity; 420, Second connection seat; 421, Second installation cavity; 430, Third slide rail;

[0039] 500, Box body. Specific implementation mode

[0040] The following further describes the implementation mode of the present application in detail with reference to the drawings and embodiments. The following embodiments are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0041] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application 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 therefore cannot be understood as a limitation to the embodiments of the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0042] In the description of the embodiments of the present application, 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, which can include 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 application can be understood according to specific situations.

[0043] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be 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" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0044] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 application. In this specification, the schematic expressions 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 a suitable manner in any one or more embodiments or examples. 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.

[0045] In an embedded furniture, a refrigeration device can be embedded in a cabinet. Among them, the door body of the refrigeration device is rotatably connected to the box body of the refrigeration device. The door body of the refrigeration device can be used to cover the accommodation space inside the box body, and a decorative panel can be used to cover the cabinet body of the cabinet, so that the outer surface of the cabinet is combined with the home decoration style.

[0046] However, as the door body of the refrigeration device is opened, the decorative panel is prone to interference and collision with the side wall of the cabinet, resulting in a poor use experience of the embedded refrigerator. Therefore, the present application proposes a door assembly to solve the defect that the refrigeration device is prone to interference with the side wall of the cabinet during the door opening process, affecting the use experience.

[0047] The following will be combined with Figures 1 to 4 Describe the door assembly and refrigeration device of the present application.

[0048] The door assembly according to the embodiment of the present application includes a door body 100, a sliding door mechanism 200, a decorative panel 400, and a first elastic member 310. One end of the door body 100 is adapted to be rotatably connected to the box body 500; the sliding door mechanism 200 is installed on the door body 100. The sliding door mechanism 200 includes a second slider 220, and the second slider 220 is slidably connected to the door body 100; the decorative panel 400 is slidably connected to the door body 100; the first elastic member 310 connects the second slider 220 and the decorative panel 400; during the door opening process, the door body 100 is adapted to drive the second slider 220 to slide and compress the first elastic member 310 to push the decorative panel 400 to move away from the rotating side of the door body 100.

[0049] For the door assembly according to the embodiment of the present application, during the door opening process, the sliding door mechanism 200 can compress the first elastic member 310. Due to the action of the elastic force, the first elastic member 310 pushes the decorative panel 400 to move away from the rotating side of the door body 100, and the decorative panel 400 can slide relative to the door body 100, thereby avoiding interference during the opening and closing of the door assembly.

[0050] It can be understood that the second slider 220 is connected to the decorative panel 400 through the first elastic member 310. When the second slider 220 slides towards the rotating side of the decorative panel 400 away from the door body 100, due to the elastic force of the first elastic member 310, the decorative panel 400 can smoothly move along the sliding direction of the second slider 220. The second slider 220 does not need to directly contact the decorative panel 400, thus avoiding mechanical wear of the sliding door mechanism 200.

[0051] According to an embodiment of the present application, a convex block 221 protrudes from one side of the second slider 220 towards the decorative panel 400. The decorative panel 400 is provided with a first connection seat 410, and the first elastic member 310 connects the convex block 221 and the first connection seat 410.

[0052] It can be understood that through the arrangement of the convex block 221 and the first connection seat 410, the first elastic member 310 can be directly and stably connected between the second slider 220 and the decorative panel 400. Since the acting force of the first elastic member 310 can directly act on the decorative panel 400 to make it slide along a predetermined trajectory, the risk of interference during the opening and closing of the door assembly is further reduced.

[0053] The first connection seat 410 is arranged on the decorative panel 400. The first connection seat 410 can be a connection seat protruding towards the door body 100, or the first connection seat 410 can be a receiving cavity formed by recessing inside the decorative panel 400. The convex block 221 is installed in the receiving cavity, and the first connection seat 410 is formed on the side wall of the receiving cavity.

[0054] According to an embodiment of the present application, the door assembly further includes a second elastic member 320. The decorative panel 400 is further provided with a second connection seat 420. The second elastic member 320 connects the convex block 221 and the second connection seat 420, and the first connection seat 410 and the second connection seat 420 are located on opposite sides of the convex block 221.

[0055] It can be understood that the second connection seat 420 is located on the other side of the convex block 221 opposite to the first connection seat 410, ensuring that both sides of the convex block 221 can obtain elastic support (the first elastic member 310 and the second elastic member 320). During the sliding process of the decorative panel 400, it will be compressed or stretched by the elastic forces of the first elastic member 310 and the second elastic member 320. The decorative panel 400 can move more stably towards the direction away from the rotating side of the door body 100, which helps to improve the stability during the opening and closing of the door assembly, makes the movement of the decorative panel 400 smoother, reduces the phenomena of jamming and jitter, and further improves the user experience.

[0056] According to an embodiment of the present application, the first connection seat 410 is formed with a first installation cavity 411, and at least a part of the first elastic member 310 is disposed through the installation cavity. It can be understood that the first installation cavity 411 is used to accommodate and install the first elastic member 310, ensuring the stable connection between the first elastic member 310 and the bump 221. The shape and size of the first installation cavity 411 match those of the first elastic member 310, ensuring that the first elastic member 310 can be stably disposed therethrough, making the connection between the first elastic member 310 and the first connection seat 410 more firm and reducing the risk of shaking or falling off that may occur during use.

[0057] According to an embodiment of the present application, the second connection seat 420 is formed with a second installation cavity 421, and at least a part of the second elastic member 320 is disposed through the second installation cavity 421. It can be understood that the second installation cavity 421 is used to accommodate and install the second elastic member 320, ensuring the stable connection between the second elastic member 320 and the bump 221. The shape and size of the second installation cavity 421 match those of the second elastic member 320, ensuring that the second elastic member 320 can be stably disposed therethrough, making the connection between the second elastic member 320 and the second connection seat 420 more firm and reducing the risk of shaking or falling off that may occur during use.

[0058] According to an embodiment of the present application, the central axes of the first elastic member 310 and the second elastic member 320 are located on the same axis.

[0059] It can be understood that when the central axes of the first elastic member 310 and the second elastic member 320 are located on the same axis, the same or similar deformations and restoring forces will be generated, enabling the first elastic member 310 and the second elastic member 320 to maintain synchronization when pushing the decorative plate 400 to slide, and enabling the door body 100 and the decorative plate 400 to maintain a more stable state during the relative sliding process, reducing the possibility of shaking and deviation.

[0060] The elastic coefficients and dimensions of the first elastic member 310 and the second elastic member 320 can be adapted to ensure that the two elastic members are consistent in performance. The pre-tightening forces between the first elastic member 310 and the second elastic member 320 and the bump 221 can be the same, ensuring that the pre-tightening force will not affect the relative sliding of the door body 100 and the decorative plate 400.

[0061] According to an embodiment of the present application, the sliding door mechanism 200 further includes a first slider 210, a connecting rod 230, and a transmission member 240. The first slider 210 is slidably mounted on the door body 100; one end of the connecting rod 230 is rotatably connected to the first slider 210, and the other end is rotatably connected to the box body 500; the transmission member 240 is drivingly connected to the first slider 210 and the second slider 220. When opening the door, the connecting rod 230 rotates to drive the first slider 210 to slide, and drives the second slider 220 to slide in a direction away from the rotating side through the transmission member 240.

[0062] It can be understood that through the transmission of the connecting rod 230, the first slider 210, and the second slider 220, the decorative panel 400 can slide relative to the door body 100, thereby avoiding interference during the opening and closing of the door assembly. The structure is simple and the assembly is convenient, which is beneficial to improving the assembly efficiency of the door assembly.

[0063] According to an embodiment of the present application, both the first slider 210 and the second slider 220 are provided with tooth grooves. The transmission member 240 includes a first gear 241 and a second gear 242. The first gear 241 meshes with the first slider 210; the second gear 242 meshes with the second slider 220; the transmission gear 243 is drivingly connected to the first gear 241 and the second gear 242.

[0064] It can be understood that when opening the door, as the door body 100 rotates relative to the box body 500, the connecting rod 230 drives the first slider 210 to slide relative to the door body 100. The tooth groove of the first slider 210 can drive the transmission member 240 (the first gear 241, the transmission gear 243, and the second gear 242) to rotate. The second gear 242 meshes with the second slider 220, thereby driving the second slider 220 to slide. Due to the repulsive force, a non-contact synchronous movement is achieved between the second magnet and the first magnet, realizing the relative movement between the door body 100 and the decorative panel 400.

[0065] When closing the door, as the door body 100 rotates relative to the box body 500, the connecting rod 230 drives the first rack to slide in the opposite direction relative to the door body 100, thereby driving the decorative panel 400 to slide in the opposite direction, realizing the relative movement between the door body 100 and the decorative panel 400, and ensuring that the decorative panel 400 can be normally closed.

[0066] It should be noted that through the intermediate transmission of the transmission gear 243, it is ensured that the rotation directions of the first gear 241 and the second gear 242 are the same, realizing simultaneous clockwise rotation or counterclockwise rotation when opening the door, and simultaneous counterclockwise rotation or clockwise rotation when closing the door.

[0067] In one embodiment, the door body 100 is provided with a first slide rail 130 and a second slide rail 140. The first slide rail 130 and the second slide rail 140 are respectively installed on opposite sides of the door body 100, and the first slider 210 and the second slider 220 are arranged in parallel. The first slider 210 is slidably connected to the first slide rail 130, and the second slider 220 is slidably connected to the second slide rail 140. By sliding the first slider 210 on the first slide rail 130 and the second slider 220 on the second slide rail 140, the smoothness of the door body 100 relative to the plate body 110 during the sliding process can be ensured, and the shaking and noise can be reduced. The first slider 210 and the second slider 220 are arranged in parallel to ensure that the moving directions of the first slider 210 and the second slider 220 are the same.

[0068] In one embodiment, the first slide rail 130 is provided with either a first limiting portion or a first limiting groove, and the first slider 210 is provided with the other of the first limiting portion and the first limiting groove, and the first limiting portion and the first limiting groove are snap-connected.

[0069] It should be noted that the shape of the first limiting portion can be an I-shaped structure, or a spindle shape or other limiting structures, and the first limiting groove can be set corresponding to the shape of the first limiting portion.

[0070] In one embodiment, the second slide rail 140 is provided with either a second limiting portion or a second limiting groove, and the second slider 220 is provided with the other of the second limiting portion and the second limiting groove, and the second limiting portion and the second limiting groove are snap-connected.

[0071] It should be noted that the shape of the second limiting portion can be an I-shaped structure, or a spindle shape or other limiting structures, and the second limiting groove can be set corresponding to the shape of the second limiting portion.

[0072] According to an embodiment of the present application, the door body 100 includes a plate body 110 and an installation portion 120. An installation space for the sliding door mechanism 200 is formed between the plate body 110 and the installation portion 120. A third slide rail 430 is installed on one side of the installation portion 120 facing the decorative plate 400, and the decorative plate 400 is slidably connected to the third slide rail 430.

[0073] It can be understood that the plate body 110 constitutes the basic shape and appearance of the door body 100. The installation portion 120 is connected to the plate body 110, and an installation space for the sliding door mechanism 200 is formed between the installation portion 120 and the plate body 110. The installation portion 120 can be designed as a structure integrally formed with the plate body 110, or can be fixedly connected to the plate body 110 by means of welding, bolt connection, etc.

[0074] The third slide rail 430 is installed on the side of the installation part 120 facing the decorative panel 400 to ensure that the decorative panel 400 can slide smoothly. The decorative panel 400 is provided with a third limiting part or a third limiting groove that matches the third slide rail 430 to ensure that the decorative panel 400 can be stably installed on the third slide rail 430.

[0075] For the refrigeration device according to the embodiment of the second aspect of the present application, please refer to Figure 4 , the refrigeration device includes a box body 500 and the above-mentioned door assembly. The box body 500 forms an accommodation space, and the door assembly is rotatably arranged on the box body 500 to open or close the accommodation space.

[0076] It can be understood that the door assembly is arranged on the box body 500 through a rotating mechanism (such as a hinge, a rotating shaft, etc.). By rotating, the accommodation space can be opened or closed, which is convenient for users to store and retrieve items. When rotating, the decorative panel 400 and the door body can have a relative displacement, avoiding interference during the opening and closing of the door assembly, and greatly improving the user experience.

[0077] It should be noted that since the refrigeration device of the present application includes the above-mentioned door assembly, it has all the technical effects of the above-mentioned door assembly, which will not be elaborated here.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the present application, rather than to limit the present application. Although the present application 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 application do not depart from the spirit and scope of the technical solutions of the present application, and should all be covered by the scope of the claims of the present application.

Claims

1. A door assembly of a refrigeration device, characterized in that, Comprising: A door body (100), one end of the door body (100) being adapted to be rotatably connected to a box body (500) of a refrigeration device; A sliding door mechanism (200), installed on the door body (100), the sliding door mechanism (200) including a first slider (210), a second slider (220), a connecting rod (230) and a transmission component (240), the first slider (210) being slidably installed on the door body (100), the second slider (220) being slidably connected to the door body (100), one end of the connecting rod (230) being rotatably connected to the first slider (210), the other end being rotatably connected to the box body (500) of the refrigeration device, and the transmission component (240) being in transmission connection with the first slider (210) and the second slider (220); A decorative panel (400), slidably connected to the door body (100); A first elastic member (310), connecting the second slider (220) and the decorative panel (400); During the door opening process, the connecting rod (230) rotates to drive the first slider (210) to slide, and drives the second slider (220) to slide and compress the first elastic member (310) through the transmission component (240), so as to push the decorative panel (400) to move away from the rotating side of the door body (100).

2. The door assembly of the refrigeration device according to claim 1, characterized in that, A convex block (221) protrudes from one side of the second slider (220) facing the decorative panel (400), the decorative panel (400) is provided with a first connecting seat (410), and the first elastic member (310) connects the convex block (221) and the first connecting seat (410).

3. The door assembly of the refrigeration device according to claim 2, characterized in that, The door assembly further includes a second elastic member (320), the decorative panel (400) is further provided with a second connecting seat (420), the second elastic member (320) connects the convex block (221) and the second connecting seat (420), and the first connecting seat (410) and the second connecting seat (420) are located on opposite sides of the convex block (221).

4. The door assembly of the refrigeration device according to claim 3, characterized in that, The first connecting seat (410) forms a first installation cavity (411), and at least part of the first elastic member (310) is disposed through the installation cavity; And / or, the second connecting seat (420) forms a second installation cavity (421), and at least part of the second elastic member (320) is disposed through the second installation cavity (421).

5. The door assembly of the refrigeration device according to claim 3, characterized in that, The central axes of the first elastic member (310) and the second elastic member (320) are located on the same axis.

6. The door assembly of the refrigeration device according to any one of claims 1-5, characterized in that, The door body (100) is provided with a first sliding rail (130) and a second sliding rail (140), the first sliding rail (130) and the second sliding rail (140) are respectively installed on opposite sides of the door body (100), the first slider (210) is slidably connected to the first sliding rail (130), and the second slider (220) is slidably connected to the second sliding rail (140).

7. The door assembly of the refrigeration device according to any one of claims 1-5, characterized in that, Both the first slider (210) and the second slider (220) are provided with tooth grooves, and the transmission component (240) includes: The first gear (241) meshes with the first slider (210); The second gear (242) meshes with the second slider (220); The transmission gear (243) is in transmission connection with the first gear (241) and the second gear (242).

8. The door assembly of the refrigeration device according to any one of claims 1-5, characterized in that, The first slider (210) and the second slider (220) are located on opposite sides of the transmission member (240), and the first slider (210) and the second slider (220) are arranged in parallel.

9. The door assembly of the refrigeration device according to any one of claims 1-5, characterized in that, The door body (100) includes a plate body (110) and a mounting portion (120). An installation space for the sliding door mechanism (200) is formed between the plate body (110) and the mounting portion (120). A third slide rail (430) is mounted on a side of the mounting portion (120) facing the decorative panel (400), and the decorative panel (400) is slidably connected to the third slide rail (430).

10. A refrigeration device, characterized in that, It includes a box body (500) and a door assembly of the refrigeration device according to any one of claims 1-9. The box body (500) forms a receiving space, and the door assembly is rotatably provided on the box body (500) to open or close the receiving space.

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