Building unit, building body and equipment capable of expanding and contracting space

Abstract

The present invention discloses a building unit, a building body, and equipment with expandable and contractible space, and relates to the field of engineering construction technology. The building unit has mutually switchable contracted and expanded forms, and includes a reference part, a plurality of first expansion parts, and a plurality of second expansion parts. In addition, the number of times the same first expansion part and the same second expansion part perform linear movement along the same axis or rotational movement around the same axis is one. The building unit, building body, and equipment, by controlling each expansion part to perform one linear movement or rotational movement on the same axis, can solve the problem of multiple interferences between expansion parts during the deformation of three-dimensional space, effectively reduce the difficulty and cost of achieving synchronous movement of the same expansion part, and improve the control accuracy of synchronous movement, thereby greatly reducing the deformation difficulty and deformation cost of the expandable space, and improving the feasibility, stability, and reliability of the expandable space in engineering.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering construction, and in particular to a building unit, a building body and equipment capable of expanding and contracting space. Background Art

[0002] As people's living standards improve, they have new demands on buildings, hoping that they can adapt to the ever-changing world. Mobile buildings, as a flexible spatial solution, break the fixed model of traditional architecture, making living space no longer limited to fixed land and easily moveable to different locations, satisfying people's more diverse lifestyle choices. Mobile buildings include mobile homes and RVs. Taking RVs as an example, as a special type of mobile building, RVs have gradually become an important means of transportation for people to travel, travel, and even for business trips. However, most existing RVs have small interior spaces due to unreasonable factors such as spatial structure design, which cannot fully meet user needs. In order to expand the interior space of the RV and meet the needs of users, it can be designed as an expandable space. For example, the Chinese invention patent (CN112537246A) discloses an RV compartment that can be expanded left and right and can be lifted up and down. The RV compartment includes a main compartment, an expansion compartment, a lifting mechanism and a telescopic mechanism. When driving, the lifting mechanism and the telescopic mechanism can be used to fold up the expansion compartment to reduce the overall volume of the compartment; when parking, the lifting mechanism and the telescopic mechanism can be used to extend the expansion compartment to increase the overall volume of the compartment, thereby increasing the activity space.

[0003] Existing devices with expandable space usually achieve deformation of their internal space through mechanical movement of deformation components. During the space deformation process, the deformation components have synchronous movement control requirements. The synchronous movement requires consistent movement direction, the same movement speed, and high control accuracy, otherwise the related deformation components will be torn and damaged; for example, the lifting mechanism used in the above-mentioned patent (CN112537246A) requires the four lifting columns of the lifting mechanism to move synchronously when the main body needs to be raised to lift the main body upward.

[0004] However, the inventors discovered in their research that when existing expandable space devices perform space expansion actions or space contraction actions, the same deformation component undergoes multiple deformation actions in multiple directions, and these deformation components will accumulate a certain error value in each deformation action. As the number of deformation actions increases, the errors of these devices in performing space expansion actions or space contraction actions will also increase, which ultimately leads to increased difficulty and cost in achieving synchronous motion in mechanical engineering for these devices, thereby greatly increasing the difficulty and cost of deformation of the expandable space. At the same time, as the deformation direction and number of deformation actions of the same deformation component increase, the errors brought about by each deformation action continue to accumulate, which will lead to a decrease in the accuracy of synchronous control, thereby seriously affecting the stability and reliability of the expandable space, and even causing the expandable space to be unable to deform.

[0005] In addition, the inventors discovered during their research that existing devices capable of expanding space have difficulty achieving deformation and opening and closing in three-dimensional space. In existing devices capable of expanding space, the deformation components typically rely on a combination of multiple two-dimensional motions to achieve spatial deformation. This results in the generation of a large number of two-dimensional motion focal points during the spatial deformation process. These focal points are often equipped with power devices within the device, making it impossible for the deformation components to penetrate these focal points. As the deformation direction and frequency of the deformation movements of these deformation components increase, these focal points will hinder the further expansion or contraction of the deformation components, resulting in the lack of buildings in the existing civilian field that can achieve three-dimensional spatial deformation and opening and closing. Summary of the Invention

[0006] The purpose of the present invention is to provide a building unit, building and equipment with expandable and contractible space. By setting expansion components and controlling the deformation mode of the expansion components, the difficulty and cost of achieving synchronous movement are effectively reduced to solve the problem of insufficient stability and reliability of existing mobile buildings.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A building unit with expandable and contractible space, the building unit having a contracted form and an expanded form that can be switched between each other, and the building unit comprises:

[0009] A reference member having a base plane capable of being kept stationary;

[0010] A plurality of first expansion members are movably connected to each other, or movably connected to the reference member, so as to be able to approach and move away from the reference member;

[0011] a plurality of second expansion members, which are movably connected to each other and are also movably connected to the first expansion member so as to be able to approach and move away from the first expansion member, or are also movably connected to the reference member so as to be able to approach and move away from the reference member;

[0012] The first extension member and the second extension member are configured to move in a moving coordinate system consisting of three axes, wherein a first axis of the moving coordinate system is an axis perpendicular to the base plane, and a second axis and a third axis of the moving coordinate system are two axes orthogonal to the first axis; the movement of the first extension member and the second extension member is as follows:

[0013] The first expansion member performs linear movement along at least one axial direction and / or rotational movement around at least one axial direction, so that the first expansion member approaches the reference member and cooperates with the reference member to form a frame body, wherein the frame body has oppositely arranged wall surfaces in each axial direction of the moving coordinate system, and the wall surfaces in the three axial directions are mutually enclosed;

[0014] The second expansion member performs linear movement along at least one axial direction and / or rotational movement around at least one axial direction, so that the second expansion member is close to the outside of the frame body, and the building unit is in the contracted state;

[0015] The first expansion member and the second expansion member perform linear movement along at least one axial direction and / or rotational movement around at least one axial direction, so that the two members are separated from the reference member, thereby forming an expansion body together with the reference member, wherein the first expansion member, the second expansion member and the reference member together constitute the outer wall of the expansion body, and at this time, the building unit is in the expanded form; and

[0016] During the process of the building unit switching between the contracted form and the expanded form, the first expansion member and / or the second expansion member currently performing movement move in the same axial direction, and the same first expansion member and the same second expansion member perform linear movement along the same axial direction, and / or the same first expansion member and the same second expansion member perform rotational movement around the same axial direction once.

[0017] In some embodiments, the first expansion member and the second expansion member are further configured as:

[0018] At least two of the first expansion members currently performing linear movement move synchronously along the same axis and in the same direction, or,

[0019] At least two of the second extension members currently performing linear movement move synchronously along the same axial direction and in the same direction, or,

[0020] Along the same axial direction and in the same direction, the first expansion member and the second expansion member currently performing linear movement move synchronously.

[0021] In some embodiments, the first expansion member and the second expansion member are further configured as:

[0022] At least two of the first expansion members currently performing linear movement move synchronously in opposite directions along the same axis, or,

[0023] At least two of the second extension members currently performing linear movement move synchronously in opposite directions along the same axis, or,

[0024] Along the opposite directions of the same axial direction, the first expansion member and the second expansion member currently performing linear movement move synchronously.

[0025] In some embodiments, the first expansion member and the second expansion member are further configured as:

[0026] At least two of the first expansion members currently performing rotational movement move synchronously in the same direction around the same axis, or,

[0027] At least two of the second expansion members currently performing rotational movement move synchronously in the same direction around the same axis, or,

[0028] The first expansion member and the second expansion member currently performing the rotational movement move synchronously around the same axis and in the same direction.

[0029] In some embodiments, the first expansion member and the second expansion member are further configured as:

[0030] At least two of the first expansion members currently performing rotational movement move synchronously in opposite directions around the same axis, or,

[0031] At least two of the second expansion members currently performing rotational movement move synchronously in opposite directions around the same axis, or,

[0032] The first expansion member and the second expansion member currently performing the rotational movement move synchronously in opposite directions around the same axis.

[0033] In some embodiments, the first expansion member is received or partially received in the reference member.

[0034] In some embodiments, the expansion body has oppositely arranged walls in each axial direction of the moving coordinate system, and the walls in the three axial directions surround each other;

[0035] At least one of the first expansion pieces, and / or at least one of the second expansion pieces includes a first panel portion and a second panel portion that intersect with each other, the first panel portion and the second panel portion are respectively located on different sides of the expansion body and can synchronously perform linear movement or rotational movement.

[0036] In some embodiments, the frame body has a basic space, and during the process of the building unit switching between the contracted form and the expanded form, the first expansion member and the second expansion member remain outside the basic space.

[0037] In some embodiments, in the expansion body, the reference member is connected to the first expansion member or the second expansion member in a single direction of any axial direction of the moving coordinate system; or,

[0038] In the expansion body, the reference member is connected to at least one of the first expansion member and the second expansion member in two directions of any axial direction of the moving coordinate system.

[0039] In some embodiments, the first expansion member and / or the second expansion member moves away from the reference member along a single direction along any axial direction of the moving coordinate system to form an expanded form of the building unit.

[0040] In some embodiments, the first expansion member and / or the second expansion member are respectively moved away from the reference member in two directions along any axial direction of the moving coordinate system to form an expanded form of the building unit.

[0041] In some embodiments, in any two axial directions of the moving coordinate system, the first expansion member and / or the second expansion member respectively move away from the reference member in a single direction along the two axial directions to form an expanded form of the building unit.

[0042] In some embodiments, in any two axial directions of the moving coordinate system, the first expansion member and / or the second expansion member moves away from the reference member in two directions along one axial direction and moves away from the reference member in a single direction along the other axial direction to form an expanded form of the building unit.

[0043] In some embodiments, in any two axial directions of the moving coordinate system, the first expansion member and / or the second expansion member are away from the reference member in two directions along one of the axial directions, and away from the reference member in two directions along the other axial direction, so as to form an expanded form of the building unit.

[0044] In some embodiments, in the three axial directions of the moving coordinate system, the first expansion member and / or the second expansion member respectively move away from the reference member along a single direction of the three axial directions to form an expanded form of the building unit.

[0045] In some embodiments, among the three axial directions of the moving coordinate system, the first expansion member and / or the second expansion member respectively move away from the reference member in a single direction along two of the axial directions, and move away from the reference member in two directions along the remaining axial direction, so as to form an expanded form of the building unit.

[0046] In some embodiments, among the three axial directions of the moving coordinate system, the first expansion member and / or the second expansion member are respectively moved away from the reference member in two directions along two of the axial directions, and away from the reference member in a single direction along the remaining axial direction, so as to form an expanded form of the building unit.

[0047] Based on the above-mentioned building unit, the present application also provides a building with expandable and contractible space, and the building with expandable space includes the above-mentioned building unit.

[0048] The present invention also provides another embodiment of the building unit, which adopts the following technical solution:

[0049] A building unit with expandable and contractible space, the building unit having a contracted form and an expanded form that can be switched between each other, and the building unit comprises:

[0050] A reference member having a base plane capable of being kept stationary;

[0051] a plurality of first expansion members, which are movably connected to each other, and at least one of the first expansion members is movably connected to the reference member so as to be able to approach and move away from the reference member;

[0052] a plurality of second expansion members, which are movably connected to each other and are also movably connected to the first expansion member so as to be able to move closer to and farther away from the first expansion member;

[0053] The first extension member and the second extension member are configured to move in a moving coordinate system consisting of three axes, wherein a first axis of the moving coordinate system is an axis perpendicular to the base plane, and a second axis and a third axis of the moving coordinate system are two axes orthogonal to the first axis; the movement of the first extension member and the second extension member is as follows:

[0054] The first expansion member performs linear movement along at least one axial direction and / or rotational movement around at least one axial direction, so that the first expansion member approaches and encloses the reference member, thereby forming a frame body, wherein the frame body has oppositely arranged wall surfaces in each axial direction of the moving coordinate system, and the wall surfaces in the three axial directions enclose each other;

[0055] The second expansion member performs linear movement along at least one axial direction and / or rotational movement around at least one axial direction, so that the second expansion member is close to the outside of the frame body, and the building unit is in the contracted state;

[0056] The first expansion member and the second expansion member perform linear movement along at least one axial direction and / or rotational movement around at least one axial direction, so that the two members are respectively away from the reference member in two directions along the three axial directions, thereby enclosing and forming an expansion body, wherein the first expansion member and the second expansion member constitute the outer wall of the expansion body, and at this time, the building unit is in the expanded form; and

[0057] During the process of the building unit switching between the contracted form and the expanded form, the first expansion member and / or the second expansion member currently performing movement move in the same axial direction, and the same first expansion member and the same second expansion member perform linear movement along the same axial direction, and / or the same first expansion member and the same second expansion member perform rotational movement around the same axial direction once.

[0058] Based on the above-mentioned building unit, the present application also provides a building with expandable and contractible space, which includes a load-bearing block and the above-mentioned building unit, and the load-bearing block is connected to the reference member.

[0059] Based on the above two building units, the present application also provides a device that can expand and contract space, and the device includes the above-mentioned building units.

[0060] Compared with the prior art, the building unit, building body and equipment with expandable and contractible space implemented in this application have the following beneficial effects:

[0061] The building unit of the present application controls each first expansion member and each second expansion member to perform a linear movement along the same axis and / or a rotational movement around the same axis, thereby enabling the building unit to complete the deformation of the expandable space, which can effectively reduce the difficulty and cost of realizing the synchronous movement of the same first expansion member or the same second expansion member. In this way, the building unit can realize the expansion deformation or contraction deformation of the space with a simple and effective deformation action in conjunction with a simple and effective deformation process, so that the building unit can ensure that the accumulated error value is maintained within an appropriate range during the process of switching between the contracted state and the expanded form, thereby ensuring that the building unit can repeatedly and stably complete the deformation of the expandable space, and the space deformation action is simple and reliable, which is suitable for promotion and use in the civilian field. At the same time, the building unit can ensure the control accuracy of the synchronous movement of the first expansion member and the second expansion member, thereby greatly reducing the deformation difficulty and deformation cost of the expandable space, further improving the stability and reliability of the expandable space, and ensuring the safety of the expandable space.

[0062] In addition, the building unit of the present application controls the first expansion member and / or the second expansion member that are currently performing movement to move in the same axial direction. In this way, in the process of spatial deformation of the building unit, the multi-dimensional movement action required to realize the deformation and opening and closing of the three-dimensional space is disassembled into multiple one-dimensional movement actions. The linear movement or rotational movement performed by the first expansion member and the second expansion member are all one-dimensional movements, and will not generate an action focus of two-dimensional movement inside the building unit, thereby effectively avoiding the problem of the action focus hindering the expansion or contraction of the building unit, so that the building unit has the ability to realize three-dimensional deformation and opening and closing, greatly expanding the achievable space expansion ratio of the building unit.

[0063] In addition, the building unit of the present application uses the frame body as the morphological reference of the contracted form, and the frame body and the expansion body have relatively arranged walls in each axial direction of the moving coordinate system, and the walls in the three axes are mutually enclosed, so that the building unit will have a relatively regular shape structure. In this way, the building unit can be switched to the expanded form simply and effectively based on the one-dimensional movement mode configured by the first expansion part and the second expansion part, thereby providing a safe, effective, simple and reliable three-dimensional space expansion method for buildings with expandable space. Moreover, based on its own relatively regular shape structure, the building unit enables the reference part, the first expansion part and the second expansion part to be configured and produced with a standardized structure, which not only makes the building unit suitable for large-scale standardized production, but also reduces the production cost of expandable space buildings, making the building unit suitable for promotion and application in the civil field.

[0064] Moreover, the building unit of the present application is a frame body formed by the cooperation of multiple first expansion parts and reference parts, or a frame body formed by the cooperation of multiple first expansion parts, which can have an internal space that is not interfered with during the switching process between the contracted form and the expanded form. In this way, the building unit can use the internal space of the frame body to pre-configure the furniture and necessities required for the user's life, thereby making the building unit more suitable for the user's living and making the building unit more suitable for civilian promotion.

[0065] In addition, the building unit of the present application controls each first expansion member and each second expansion member to perform one linear movement or rotational movement on the same axis, thereby limiting the number of linear movements of each first expansion member and each second expansion member along each axis or rotational movements around each axis. In this way, when the building unit of the present application performs expansion deformation with several times the expansion ratio, the first expansion member and the second expansion member can expand and deform in an orderly manner, and the building unit can complete multiple-rate expansion deformation with a simple and effective deformation path. Moreover, the building unit of the present application controls each first expansion member and / or each second expansion member to move synchronously on the same axis. When the building unit of the present application switches between a contracted form and an expanded form, the steps of contraction deformation or expansion deformation can be effectively saved, thereby saving the steps of deformation control of the building unit, further reducing the deformation difficulty and deformation cost of the expandable space, and improving the stability and reliability of the expandable space.

[0066] The building and equipment of the present application both include the aforementioned building units and also possess the beneficial effects possessed by the aforementioned building units. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Figure 1 is a schematic diagram of the building unit in Example 1 of the present application in a contracted state;

[0068] Figure 2 This is a schematic diagram of the first step of unfolding the building unit in the self-contracted state in Example 1 of the present application;

[0069] Figure 3 This is a schematic diagram of the second step of unfolding the building unit in the self-contracted state in Example 1 of the present application;

[0070] Figure 4 This is a schematic diagram of the third step of unfolding the building unit in the self-contracted state in Example 1 of the present application;

[0071] Figure 5 This is a schematic diagram of the fourth step of unfolding the building unit in the self-contracted state in Example 1 of the present application;

[0072] Figure 6 is a schematic diagram of the building unit in Example 1 of the present application in an expanded state;

[0073] Figure 7 This is a schematic diagram of a portion of the structure of the frame body in Example 1 of the present application;

[0074] Figure 8 This is a schematic diagram of the building unit in Example 1 of the present application being expanded into two space grids;

[0075] Figure 9 This is a schematic diagram of the building unit in Example 1 of the present application being expanded into three space grids;

[0076] Figure 10 This is a schematic diagram of the building unit in Example 1 of the present application being expanded into four space grids;

[0077] Figure 11 Schematic diagram of the building unit in Example 1 of the present application expanded into six space grids;

[0078] Figure 12 This is a schematic diagram of the building unit in Example 1 of the present application being expanded into nine space grids;

[0079] Figure 13 This is a schematic diagram of the building unit in Example 1 of the present application being expanded into eight space grids;

[0080] Figure 14 This is a schematic diagram of the building unit in Example 1 of the present application being expanded into eighteen space grids;

[0081] Figure 15 Schematic diagram of the building unit in Example 2 of the present application expanded into twenty-seven space grids;

[0082] Figure 16 This is a schematic diagram of the coordination between the building unit and the load-bearing part in Example 2 of the present application;

[0083] Figure 17 is a schematic diagram of the building unit in Example 3 of the present application in an expanded state;

[0084] Figure 18 is a schematic diagram of the building unit in Example 3 of the present application in a contracted state;

[0085] Figure 19 is a schematic diagram of the interior of the building unit in the contracted state in Example 3 of the present application;

[0086] Figure 20 This is a schematic diagram of a portion of the structure of the frame body in Example 3 of the present application;

[0087] Figure 21 is a schematic diagram of the bottom plate assembly in Example 3 of the present application in a retracted state;

[0088] Figure 22is a schematic diagram of the bottom plate assembly in Example 3 of the present application in an expanded state;

[0089] Figure 23 is a schematic diagram of the top plate assembly in Example 3 of the present application in a retracted state;

[0090] Figure 24 is a schematic diagram of the top plate assembly in Example 3 of the present application in an expanded state;

[0091] Figure 25 is a schematic diagram of the first top plate in Example 3 of the present application;

[0092] Figure 26 is a schematic diagram of the side panel assembly in Example 3 of the present application in a retracted state;

[0093] Figure 27 This is a schematic diagram of the coordination of the first left upper side panel, the first left lower side panel, the second left upper side panel and the second left lower side panel in Example 3 of the present application in a retracted state.

[0094] In the figure, 100, building unit; X, first axis; Y, second axis; Z, third axis; 200, frame body; 300, expansion body;

[0095] 1. Reference part; 1a. Basic plane; 1b. First plate part; 1c. Second plate part; 2. First extension part; 2a. First plate body; 2b. Second plate body; 2c. Third plate body; 3. Second extension part; 3a. Fourth plate body; 3b. Fifth plate body; 3c. Sixth plate body; 3d. Seventh plate body; 3e. Eighth plate body; 3f. Ninth plate body; 3g. Tenth plate body; 3h. Eleventh plate body; 3i. Twelfth plate body; 3j. Thirteenth plate body; 3k. Fourteenth plate body; 3l. Fifteenth plate body; 4. Basic space; 5. Bottom plate assembly; 5a. First bottom plate member; 5b. Second bottom plate member; 5c. Third bottom plate member; 5d. Fourth bottom plate member; 50d. Fourth front plate part; 51d. Fourth middle plate part; 52d. Fourth rear plate part Plate portion; 5e, fifth bottom plate member; 5f, sixth bottom plate member; 6, side panel assembly; 6a, first upper left side panel; 60a, first left side panel portion; 61a, first rear side panel portion; 6b, first lower left side panel; 6c, second upper left side panel; 6d, second lower left side panel; 6e, first upper right side panel; 6f, first lower right side panel; 6g, second upper right side panel; 6h, second lower right side panel; 7, top plate assembly; 7a, first top plate member; 70a, first top plate portion; 71a, first end plate portion; 7b, second top plate member; 7c, third top plate member; 7d, fourth top plate member; 7e, fifth top plate member; 7f, sixth top plate member; 8, first panel portion; 9, second panel portion; 10, load-bearing portion; 11, balcony assembly; 12, power assembly. DETAILED DESCRIPTION

[0096] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0097] In the description of the present invention, it should be understood that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element. The terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, it may be internal communication between two elements or an interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0098] In the description of the present invention, it should be understood that the terms "height", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used in the present invention to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 on the present invention.

[0099] In describing the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being described. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features.

[0100] Example 1

[0101] refer to Figure 1-14Embodiment 1 of the present invention provides a building unit 100 with expandable and contractible space, which is used to provide users with a space in which they can enter and carry out activities. The building unit 100 includes a reference member 1 and an expansion component, wherein the reference member 1 has at least a basic plane 1a that can remain stationary; the expansion component can move relative to the reference member 1 to approach and move away from the reference member 1, thereby enabling the building unit 100 to achieve expansion deformation or contraction deformation, and through expansion deformation, the building unit 100 can expand its own internal space, thereby providing users with sufficient activity space or living space, and through contraction deformation, the building unit 100 can fold its own occupied space, thereby reducing its own volume, making it easier for users to move the building unit 100.

[0102] The base plane 1a serves as the origin of the action for the extension deformation or contraction deformation of the building unit 100. During the process of the extension deformation or contraction deformation of the building unit 100, its position and shape can remain unchanged, so that the expansion component can be expanded toward the outside of the reference part 1 to achieve extension deformation or folded toward the reference part 1 to achieve contraction deformation.

[0103] The shape of the reference member 1 is diverse; it can be composed of multiple plates or just one plate. Based on the shape and structure of the reference member 1, the reference member 1 itself can be used to define a space with a certain volume, which is limited by the structural boundaries of the reference member 1. Using this space, the reference member 1 can accommodate the first expansion member 2, allowing the first expansion member 2 to be fully or partially accommodated within the space. Of course, depending on the accommodation of the first expansion member 2, the second expansion member 3 may also be accommodated or partially accommodated within the space.

[0104] It is understandable that in order to ensure that the expansion components can be accommodated in the space, the space is generally a semi-open space with an open channel for the expansion components to enter and exit, so that the expansion components can approach and move away from the reference part 1. The number and arrangement direction of the open channels are related to the shape and deformation path of the building unit 100 during extension deformation and contraction deformation, and can be set according to specific circumstances. Of course, in other examples, the space can also be a closed space. For example, the reference part 1 is an electric power unit, which adopts a closed structure to protect the internal electric components. At this time, the expansion component can achieve contraction deformation of the reference unit by approaching the reference part 1 and approaching the outer wall of the reference part 1.

[0105] Based on the expansion and contraction deformation of the building unit 100, the building unit 100 has a mutually switchable contraction form and expansion form, wherein the expansion component serves as the action component for the expansion and contraction deformation of the building unit 100, and includes a plurality of first expansion members 2 and a plurality of second expansion members 3, wherein the first expansion members 2 and the second expansion members 3 can be composed of multiple plates or a single plate. The plurality of first expansion members 2 are movably connected to each other, or the plurality of first expansion members 2 are movably connected to the reference member 1, so that the first expansion members 2 can move closer to and away from the reference member 1 and cooperate with the reference member 1 to form the frame body 200; the plurality of second expansion members 3 are movably connected to each other, and the second expansion members 3 are also movably connected to the first expansion members 2, so that the second expansion members 3 can move closer to and away from the first expansion members 2, or the second expansion members 3 are also movably connected to the reference member 1, so that the second expansion members 3 can move closer to and away from the reference member 1, so that the second expansion members 3 can move closer to the outside of the frame body 200, thereby forming the contraction form of the building unit 100. Of course, in order to reduce the space occupied by the building unit 100 in the contracted state, the second expansion member 3 can be in contact with or nearly in contact with the outer side of the frame body 200 .

[0106] It should be noted that, the fact that multiple first expansion members 2 are movably connected to each other, or multiple first expansion members 2 are movably connected to the reference member 1, does not require that all first expansion members 2 are movably connected to each other, or that all first expansion members 2 are movably connected to the reference member 1. For example, in a certain building unit 100, the number of first expansion members 2 is ten, and according to the deformation configuration of the building unit 100, six first expansion members 2 can be interactively connected to each other, and the remaining four first expansion members 2 can be movably connected to the reference member 1. Of course, according to the deformation configuration of the building unit 100, it is also feasible that all first expansion members 2 are movably connected to each other, or that all first expansion members 2 are movably connected to the reference member 1. The same applies to the second expansion members 3.

[0107] As an example of this embodiment, refer to Figure 1-6The first extension member 2 includes a first plate 2a, a second plate 2b, and a third plate 2c. The second extension member 3 includes a fourth plate 3a, a fifth plate 3b, a sixth plate 3c, a seventh plate 3d, an eighth plate 3e, a ninth plate 3f, a tenth plate 3g, an eleventh plate 3h, a twelfth plate 3i, a thirteenth plate 3j, a fourteenth plate 3k, and a fifteenth plate 3l. The first plate 2a, the second plate 2b, and the third plate 2c each have an L-shaped outer profile, each consisting of two connected plates. The twelfth plate 3i, the thirteenth plate 3j, the fourteenth plate 3k, and the fifteenth plate 3l each have a planar outer profile, each consisting of one plate. When the building unit 100 is in the contracted state, the reference member 1 cooperates with the first plate 2a, the second plate 2b, and the third plate 2c to enclose and form the frame 200.

[0108] It should be noted that in Figure 1-14 In the above example, the outer contour edges of the first plate 2a to the fifteenth plate 31 are flush in order to facilitate the presentation of the outer contour shapes of the frame body 200 and the expansion body 300, but it does not limit the outer contour edges of the frame body 200 and the expansion body 300 to be flush.

[0109] The frame 200 has walls arranged opposite to each other in each axial direction of the moving coordinate system, and the walls in the three axial directions enclose one another. It will be understood that the walls enclose and divide the interior space of the frame 200, which is equivalent to the walls of a building. As an example of this embodiment, the frame 200 can have a hexahedral structure, and the hexahedral structure can be a rectangular parallelepiped structure, a cube structure, or other irregular hexahedral shapes. Moreover, the outer wall of the first extension part 2 does not necessarily completely match the outer wall of the reference part 1, and the specifications and dimensions of each first extension part 2 and each second extension part 3 are not necessarily the same. For example, as an example, the outer wall thickness of the reference part 1 may be greater than the thickness of the first extension part 2, so that the outer wall of the reference part 1 protrudes from the outer wall of the first extension part 2, or the first extension part 2 is partially received in the space of the reference part 1, so that the other parts of the first extension part 2 are exposed. However, for the frame body 200, the reference part 1 and multiple first extension parts 2 will still constitute its outer wall, and the outer walls of the frame body 200 generally remain orthogonal or nearly orthogonal to each other, so that the outer contour of the frame body 200 presents a hexahedral structure.

[0110] The shapes of the first extension piece 2 are diverse. When the first extension piece 2 cooperates with the reference piece 1 to form the frame body 200, first extension pieces 2 of different shapes will cooperate with the reference piece 1 in different ways. For example, when the first extension piece 2 is only a single flat plate structure, the first extension piece 2 can constitute the side wall of the frame body 200 as a whole; when the first extension piece 2 is a bent structure with multiple planar structures connected, the first extension piece 2 can constitute the side wall of the frame body 200 in whole or in part, and the rest of the first extension piece 2 is built into the internal space of the frame body 200. It is understandable that within the same building unit 100, multiple first extension pieces 2 can respectively have a single flat plate structure and a bent structure with multiple planar structures connected. Multiple first extension pieces 2 of different shapes and structures cooperate with each other and can also form the frame body 200 with the reference piece 1.

[0111] It is understandable that, as the structural structure of an engineering building, the reference member 1, the first extension member 2, and the second extension member 3 of the present building unit 100 all have a certain structural strength to meet the required bearing capacity of the present building unit 100. During the process of the building unit 100 realizing extension deformation or contraction deformation, the reference member 1, the first extension member 2, and the second extension member 3 should not interfere with each other, so as to ensure that the reference member 1, the first extension member 2, and the second extension member 3 do not collide with each other and are not damaged during the process of the building unit 100 realizing extension deformation or contraction deformation. In this way, when the present building unit 100 is contracted and deformed, especially when the present building unit is subjected to multi-fold expansion and contraction deformation, the outer layer of the frame body 200 will be superimposed with a multi-layer structure, namely, the second extension member 3.

[0112] Furthermore, as the structural structure of the engineering construction, the building unit 100, including the reference member 1, first extension member 2, and second extension member 3, possesses a certain weight. Considering the accuracy of synchronous control, the first extension member 2, second extension member 3, and reference member 1 are spliced ​​orthogonally to each other, which is a more feasible spatial deformation method. Therefore, after the multiple first extension members 2 move toward the reference member 1 and are retracted into the base space 4, the frame body 200 formed in conjunction with the reference member 1 has opposing wall surfaces along each axial direction of the moving coordinate system.

[0113] Of course, the shape of the reference member 1 is also diverse. The reference member 1 can be set according to the form of extension deformation or contraction deformation of the building unit 100. For example, the reference member 1 can have one or more basic planes 1a, constituting any side surface or multiple adjacent sides of the frame body 200, and the axial direction corresponding to the other side surfaces of the frame body 200 is used as the axial direction for the expansion component to pass through during the spatial deformation process.

[0114] refer to Figure 7The first expansion member 2 cooperates with the reference member 1 to form a frame body 200. A space with a certain volume, namely, a base space 4, is formed within the frame body 200. Depending on how the reference member 1 and the first expansion member 2 cooperate with each other, the base space 4 may be limited to the structural boundary of the reference member 1 or may be smaller than the structural boundary of the reference member 1. It is understood that when the building unit 100 switches between the collapsed and expanded configurations, the base space 4 within the frame body 200 can be impenetrable and uninterrupted. This allows the expansion components to remain outside the base space 4 and not enter it during the switching between the collapsed and expanded configurations. This allows the building unit 100 to utilize the base space 4 to accommodate the furniture needed for the user's daily life. Furthermore, because the expansion components remain outside the base space 4 during the configuration switching, the furniture will not be damaged during the deformation of the building unit 100.

[0115] refer to Figure 5 As an example of this embodiment 1, the reference part 1 includes a first plate part 1b and a second plate part 1c adjacent to each other, and the first plate part 1b and the second plate part 1c are orthogonally connected to each other, so that the reference part 1 defines a semi-open space that matches the length, width and height of the first plate part 1b and the second plate part 1c with the boundary of the first plate part 1b and the second plate part 1c. Moreover, when the reference part 1 cooperates with the first extension part 2 to form the frame body 200, the first plate part 1b and the second plate part 1c constitute the bottom surface and one of the side surfaces of the frame body 200, and the other surfaces arranged opposite to the reference part 1, that is, the top surface and other side surfaces of the frame body 200 are formed by the first extension part 2, and the axial direction corresponding to the top surface and other side surfaces of the frame body 200 is the axial direction of the first extension part 2 approaching and moving away from the reference part 1. Therefore, the plane where the first plate part 1b is located can be used as the base plane 1a, and the axial direction perpendicular to the base plane 1a can be used as the first axial direction X, and the first axial direction X, the second axial direction Y and the third axial direction Z that are mutually orthogonal to the first axial direction X can form a moving coordinate system, and the moving coordinate system can be used as the axial direction for the first expansion part 2 and the second expansion part 3 to perform spatial deformation.

[0116] It should be noted that the moving coordinate system composed of the first axial direction X, the second axial direction Y, and the third axial direction Z is a three-dimensional coordinate system. Although the reference part 1 may have one or more base planes 1a based on the different shapes of the reference part 1, the reference part 1 is one of the components of the frame body 200, and the frame body 200 has relatively arranged walls in each axial direction of the moving coordinate system, and the walls in the three axial directions are mutually enclosed. In this way, even if the reference part 1 has multiple base planes 1a, the multiple base planes 1a will remain orthogonal to each other. In this way, the moving coordinate system set based on any one of the base planes 1a will always be oriented towards the width axis, length axis, and height axis of the frame body 200. Of course, in any axial direction of the moving coordinate system, each axial direction has two opposite directions.

[0117] Based on this moving coordinate system, when the building unit 100 switches from the contracted state to the expanded state, the second expansion member 3 and the first expansion member 2 can be configured to move in the moving coordinate system composed of the first axis X, the second axis Y, and the third axis Z in the following manner:

[0118] The first expansion member 2 performs linear movement along at least one axial direction and / or rotational movement around at least one axial direction, so that the first expansion member 2 approaches the reference member 1 and cooperates with the reference member 1 to form the frame body 200; the second expansion member 3 performs linear movement along at least one axial direction and / or rotational movement around at least one axial direction, so that the second expansion member 3 approaches the outside of the frame body 200. At this time, the building unit 100 is in a contracted state;

[0119] The first expansion member 2 and the second expansion member 3 perform linear movement along at least one axial direction and / or rotational movement around at least one axial direction, so that the two are away from the reference member 1, thereby forming an expansion body 300 together with the reference member 1, wherein the first expansion member 2, the second expansion member 3 and the reference member 1 together constitute the outer wall of the expansion body 300. At this time, the building unit 100 is in the expanded state, and the internal space of the expansion body 300 is larger than the internal space of the frame body 200; and

[0120] During the process of switching between the contracted form and the expanded form of the building unit 100, the first expansion member 2 and / or the second expansion member 3 currently performing movement move in the same axial direction, and the same first expansion member 2 and the same second expansion member 3 perform linear movement along the same axial direction, and / or the same first expansion member 2 and the same second expansion member 3 perform rotational movement around the same axial direction once.

[0121] refer to Figure 1-7 As an example of this embodiment, after the first expansion member 2 and the second expansion member 3 are unfolded, the movement path of the first plate 2a to the fifteenth plate 31 is:

[0122] The first plate 2a rises along the first axial direction X, thereby moving away from the reference part 1 and moving to the top of the reference part 1; the fourth plate 3a rises along the first axial direction X, and moves along the second axial direction Y to the right side of the first plate 2a; the fifth plate 3b rises along the first axial direction X, and moves along the second axial direction Y to the left side of the first plate 2a, opposite to the fourth plate 3a; the eighth plate 3e moves along the second axial direction Y, thereby moving away from the reference part 1 and moving to the right side of the reference part 1; the ninth plate 3f moves along the second axial direction Y, thereby moving away from the reference part 1 and moving to the left side of the reference part 1, opposite to the eighth plate 3e; the tenth plate 3g moves along the third axial direction Z, thereby moving away from the reference part 1 and moving to the front of the reference part 1; the sixth plate 3c moves along the third axial direction Z, and moves along the second axial direction Y, moving to the right side of the tenth plate 3g; the seventh plate 3d moves along the third axial direction Z, and moves along the second axial direction Y, moving to the left side of the tenth plate 3g; the second plate 2b moves along the third axial direction The first plate 31 moves along the third axial direction Z, along the second axial direction Y, and along the first axial direction X, thereby moving to above the sixth plate 3c; the third plate 2c moves along the third axial direction Z, along the second axial direction Y, and along the first axial direction X, thereby moving to above the seventh plate 3d; the eleventh plate 3h moves along the third axial direction Z, and along the first axial direction X, thereby moving to above the tenth plate 3g; the twelfth plate 3i moves along the third axial direction Z, along the second axial direction Y, and along the first axial direction X, thereby moving to above the third plate 2c; the thirteenth plate 3j moves along the third axial direction Z, along the second axial direction Y, and along the first axial direction X, thereby moving to above the second plate 2b; the fourteenth plate 3k moves along the second axial direction Y and along the first axial direction X, thereby moving to above the fifth plate 3b; the fifteenth plate 3l moves along the second axial direction Y and along the first axial direction X, thereby moving to above the fourth plate 3a.

[0123] refer to Figure 1-7 The outer contour of the expansion body 300 is a hexahedral structure, and the projections of the frame body 200 and the expansion body 300 on each reference plane of the moving coordinate system are square. The first expansion member 2, the second expansion member 3 and the reference member 1 constitute the outer wall of the expansion body 300.

[0124] It should be noted that Figure 1-7 It is only used to illustrate the switching of the building unit 100 from the contracted state to the expanded state, and the first expansion member 2 and the second expansion member 3 overlap in the space. Figure 1-7 For example, in Figures 1 to 6 In the embodiment, the second plate 2b and the sixth plate 3c are in the same space. At this time, the second plate 2b is sleeved outside the sixth plate 3c, so that the sixth plate 3c is built into the second plate 2b. Figure 1Of course, in other examples, the second plate 2b and the sixth plate 3c can also be stacked inside and outside or matched in other ways so that the two plates moved to the same space do not interfere with each other.

[0125] Multiple first expansion pieces 2 and multiple second expansion pieces 3 can only perform linear movement or only perform rotational movement, so that the present building unit 100 switches from a contracted form to an expanded form. Of course, multiple first expansion pieces 2 and multiple second expansion pieces 3 can also perform linear movement and rotational movement respectively, so that the present building unit 100 switches from a contracted form to an expanded form. It should be noted that the same first expansion piece 2 and the same second expansion piece 3 only perform linear movement or rotational movement once in the same axial direction. Therefore, in a single spatial deformation process, after any first expansion piece 2 or any second piece performs linear movement or rotational movement along the first axial direction X, it will not perform linear movement or rotational movement again in the first axial direction X. By constraining the number of times the first expansion piece 2 and the second expansion piece 3 perform linear movement or rotational movement, the deformation path of the present building unit 100 can be limited, and the stability and reliability of the spatial deformation of the present building unit 100 can be guaranteed.

[0126] For example, taking the first axis X indicating the height axis of the expansion body 300, the second axis Y indicating the width axis of the expansion body 300, and the third axis Z indicating the length axis of the expansion body 300 as an example, in the case where the building unit 100 switches from a contracted form to an expanded form, taking the first expansion member 2 as an example, on the same axis, the same first expansion member 2 performs linear movement or rotational movement once, which will cause any first expansion member 2 to perform linear movement along any direction of the first axis X, and after the first expansion member 2 reaches the moving stroke of this linear movement, the first expansion member 2 reaches the boundary of the expansion body 300 in the height axis, so that the first expansion member 2 completes the stretching deformation in the height axis through one movement action, and by superimposing the linear movement in any direction of the second axis Y and the linear movement in any direction of the third axis Z, the first expansion member 2 can reach the boundaries of the expansion body 300 in the length axis, width axis and height axis, thereby forming the outer wall of the expansion body 300.

[0127] The present building unit 100 is configured with a plurality of first expansion members 2 and a plurality of second expansion members 3, and controls the first expansion members 2 and the second expansion members 3 to perform a linear movement or rotational movement in the same axial direction to complete the deformation of the expandable space, thereby effectively reducing the difficulty and cost of realizing the synchronous movement of the same first expansion member 2 and the second expansion member 3. Moreover, by cooperating with each other, the first expansion members 2 and the second expansion members 3 respectively form outer wall structures in corresponding forms to complete the enclosure of the engineering building, so that the present building unit 100 can switch between a contracted form and an expanded form, so that the hexahedral closed space in the contracted form is expanded into a hexahedral closed space in the expanded form, or the hexahedral closed space in the expanded form is contracted into a hexahedral closed space in the contracted form.

[0128] Furthermore, during the process of switching between the contracted and expanded configurations of the building unit 100, the building unit 100 undergoes multiple deformation steps, which are generally performed sequentially. In each deformation step, the currently moving first expansion member 2 and / or the second expansion member 3 move along the same axial direction. Thus, the deformation action performed by the building unit 100 in each deformation step is a one-dimensional movement, thereby reducing the control difficulty of achieving three-dimensional deformation and opening and closing of the building unit 100 to that of one-dimensional movement.

[0129] For example, taking the first axis X indicating the height axis of the expansion body 300, the second axis Y indicating the width axis of the expansion body 300, and the third axis Z indicating the length axis of the expansion body 300 as an example, when the building unit 100 switches from the contracted form to the expanded form, the number of first expansion parts 2 performing the moving action in a certain deformation step is two, then, these two first expansion parts 2 will move in the same axial direction in this deformation step, such as moving together along the first axial direction X, and after the two first expansion parts 2 move together along the first axial direction X once, they reach the preset positions of the two in the first axial direction X, and then the building unit 100 performs the next deformation step.

[0130] It is understandable that when the plurality of first extension members 2 and the plurality of second extension members 3 move to the target position, i.e., the corresponding outer wall position of the extension body 300, along the first axial direction X, the second axial direction Y, and the third axial direction Z of the moving coordinate system, there may be partially overlapping movement paths between the plurality of first extension members 2, between the plurality of second extension members 3, and between the first extension member 2 and the second extension member 3. Considering the uniformity of synchronous control, as an example of this embodiment 1, the second extension member 3 and the first extension member 2 can be configured to have multiple synchronous movement modes:

[0131] (1) At least two of the first extension members that are currently performing linear movement move synchronously along the same direction of the same axis, or at least two of the second extension members that are currently performing linear movement move synchronously along the same direction of the same axis, or the first extension member and the second extension member that are currently performing linear movement move synchronously along the same direction of the same axis.

[0132] (2) At least two of the first extension members that are currently performing linear movement move synchronously in opposite directions along the same axis, or at least two of the second extension members that are currently performing linear movement move synchronously in opposite directions along the same axis, or the first extension member and the second extension member that are currently performing linear movement move synchronously in opposite directions along the same axis.

[0133] (3) At least two of the first expansion members that are currently performing rotational movement move synchronously in the same direction around the same axis, or at least two of the second expansion members that are currently performing rotational movement move synchronously in the same direction around the same axis, or the first expansion member and the second expansion member that are currently performing rotational movement move synchronously in the same direction around the same axis.

[0134] (4) At least two of the first expansion members that are currently performing rotational movement move synchronously in opposite directions around the same axis, or at least two of the second expansion members that are currently performing rotational movement move synchronously in opposite directions around the same axis, or the first expansion member and the second expansion member that are currently performing rotational movement move synchronously in opposite directions around the same axis.

[0135] Moreover, as a supplement to this example, the first expansion member 2 and the second expansion member 3 that perform synchronous movement or synchronous flipping have the same movement angle and the same movement speed.

[0136] refer to Figures 1-6 , based on the building unit 100 Figure 1 The contraction pattern shown switches to Figure 6 Take the expansion form shown as an example, Figure 1 The building unit 100 in the expanded form shown can be divided into multiple space grids, each space grid is separated by the boundaries of the first expansion part 2, the second expansion part 3 and the reference part 1 themselves or the intersection between them. In this way, the building unit 100 can be regarded as having one space grid in the contracted form, and the building unit 100 can be regarded as having multiple space grids in the expanded form. Moreover, the difference in the number of space grids of the building unit 100 in the contracted form and the expanded form is the space expansion ratio of the building unit 100.

[0137] refer to Figure 6In the process of switching the building unit 100 from the contracted state to the expanded state, the second plate 2b and the third plate 2c perform a linear movement along the first axis X, a linear movement along the second axis Y, and a linear movement along the third axis Z, so that the second plate 2b forms a Figure 6 The outer wall of the corner of the building unit 100 is shown. The third plate 2c performs a linear movement along the second axis Y and a linear movement along the third axis Z, so that the third plate 2c constitutes Figure 6 As shown in the outer wall of the corner of the building unit 100, it is obvious that the second plate 2b and the third plate 2c both perform linear movement along the second axial direction Y and the third axial direction Z, and the directions of the linear movement of the two along the first axial direction X and the second axial direction Y are the same. In this way, when the second plate 2b performs linear movement along the first axial direction X and the linear movement along the second axial direction Y, it can move synchronously with the third plate 2c, so that the building unit 100 can complete the space expansion with a simpler deformation step, and this also makes the synchronous control of the building unit 100 more convenient.

[0138] Of course, by using a bidirectionally driven mechanical component, such as a bidirectional cylinder, the second expansion member 3 and the first expansion member 2 can also be configured to: the first expansion member 2 and the second expansion member 3 that perform linear movement move synchronously in the same axial direction and in opposite directions.

[0139] In different building units 100, based on the differences in the shape structures of the first expansion piece 2 and the second expansion piece 3, different building units 100 will have different deformation paths, so that the first expansion piece 2 and the second expansion piece 3, the first expansion piece 2 and another first expansion piece 2, the second expansion piece 3 and another second expansion piece 3 may all have movement paths on the same axis and in the same direction or opposite directions, so that the first expansion piece 2 and the second expansion piece 3, the first expansion piece 2 and another first expansion piece 2, the second expansion piece 3 and another second expansion piece 3 can all move or flip synchronously, and in the process of synchronous movement or synchronous flipping, the corresponding first expansion piece 2 and second expansion piece 3 have the same movement angle and the same movement speed.

[0140] It is understood that the stability, load-bearing reliability, and internal space enclosure of the building unit 100 in its expanded state all impact the user experience. Therefore, in the expanded unit 300, the corresponding structures at its corners or bottom may consider adopting a non-flip structure, such as placing a single first expansion member 2, a single second expansion member 3, or a reference element at a corner.

[0141] refer to Figure 6As an example of this embodiment 1, the outline of the expansion body 300 is a square hexahedron, which has oppositely arranged walls in each axial direction of the moving coordinate system, and the walls in the three axial directions are mutually enclosed. The second plate body 2b serves as the first expansion member 2 located at the corner of the expansion body 300, and the fourth plate body 3a serves as the second expansion member 3 located at the corner of the expansion body 300. Both include a first panel portion 8 and a second panel portion 9 that intersect with each other. The first panel portion 8 and the second panel portion 9 are located on different sides of the expansion body 300 and can perform linear or rotational movement synchronously. In this way, in the expansion body 300, at least two adjacent side surfaces at its corner position are interconnected panels, preventing the corner position of the expansion body 300 from being affected by excessive flipping and splicing and affecting the sealing performance.

[0142] It is understandable that by controlling the first expansion member 2 and the second expansion member 3 to perform only one linear movement or rotational movement in the same axial direction, the number of spatial grids expanded in the same axial direction of the present building unit 100 from the base member 1 is two or three. In this way, in the expansion body 300, in a single direction of any axial direction of the moving coordinate system, the base member 1 is connected to the side of the first expansion member 2 or the second expansion member 3; or, in two directions of any axial direction of the moving coordinate system, the base member 1 is respectively connected to at least one of the first expansion member 2 and the second expansion member 3, so that the base member 1 is located between any two of the first expansion member 2 or the second expansion member 3. Moreover, depending on the number of axial directions in which the multiple first expansion members 2 and the multiple second expansion members 3 respectively perform linear movement or rotational movement, the present building unit 100 can form expansion bodies 300 with different expansion magnifications.

[0143] For example, reference Figure 6 In the three axial directions of the moving coordinate system, the first expansion member 2 and / or the second expansion member 3 are respectively moved away from the reference member 1 in a single direction along two of the axial directions, and are moved away from the reference member 1 in two directions along the remaining axial direction, so as to form an expanded form of the building unit 100. In this way, the number of space grids of the building unit 100 is expanded from one space grid in the contracted form to twelve space grids in the expanded form, achieving a twelve-fold expansion ratio.

[0144] Alternatively, the first expansion member 2 and / or the second expansion member 3 can be moved away from the reference member 1 along a single direction of any axial direction of the moving coordinate system to form an expanded form of the building unit 100. As an example of this embodiment 1, the expansion component is moved away from the reference member 1 along a single direction of the third axial direction Z, the second axial direction Y, or the first axial direction X to form an expanded form of the building unit 100. Taking the second axial direction Y as an example, refer to Figure 8The multiple first expansion members 2 and the multiple second expansion members 3 perform a linear movement in the same direction along the second axial direction Y, causing the first expansion members 2 and the second expansion members 3 to move away from the base member 1 and form an expansion body 300 with a rectangular outer contour. In this way, the number of spatial grids in the building unit 100 increases from one spatial grid in the contracted state to two spatial grids in the expanded state, achieving a doubling of the expansion ratio.

[0145] Of course, the expansion component can also be moved along the second axis Y or the first axis X to enable the building unit 100 to be expanded in the width axis or the height axis, or the expansion component can be rotated and moved away from the reference part 1. Moreover, the number of the first expansion part 2 and the second expansion part 3 can be set according to the shape of the first expansion part 2 and the second expansion part 3, so that the frame body 200 and the expansion body 300 can maintain a hexahedral structure, which will not be elaborated here.

[0146] It should be noted that the volumes of the two space grids in the expanded form are not necessarily equal, and the volume of each space grid depends on the specifications and dimensions of the first expansion member 2, the second expansion member 3, and even the reference member 1 that constitute each space grid.

[0147] Alternatively, the first expansion member 2 and / or the second expansion member 3 are respectively moved away from the reference member 1 in two directions along any one axis of the moving coordinate system to form an expanded form of the building unit 100. As another example of this embodiment 1, along the third axis Z or the second axis Y or the first axis X, the expansion components are respectively moved away from the reference member 1 in two directions along the same axis to form an expanded form of the building unit 100. Taking the second axis Y as an example, refer to Figure 9 The first expansion members 2 and the second expansion members 3 each perform a linear movement along the second axis Y in both directions, forming an expansion body 300 with a rectangular outer contour. This increases the number of spatial cells in the building unit 100 from one in the contracted configuration to three in the expanded configuration, achieving a three-fold expansion ratio.

[0148] Alternatively, in any two axial directions of the moving coordinate system, the first expansion member 2 and / or the second expansion member 3 are respectively moved away from the reference member 1 along a single direction of the two axial directions to form the expanded form of the building unit 100. Figure 10 As an example of this embodiment 1, along any two axes of the third axis Z or the second axis Y or the first axis X, the expansion component is moved away from the reference member 1 along a single direction of the two axes to form an expanded form of the building unit 100. Taking the third axis Z and the second axis Y as an example, refer to Figure 10The multiple first expansion members 2 and the multiple second expansion members 3 perform a linear movement along the same direction of the third axis Z or a rotational movement about the third axis Z, and also perform a linear movement along the same direction of the second axis Y or a rotational movement about the second axis Y, thereby forming an expansion body 300 with a rectangular outer contour. In this way, the number of spatial grids of the building unit 100 increases from one spatial grid in the contracted state to four spatial grids in the expanded state, achieving a four-fold expansion ratio.

[0149] Alternatively, in any two axial directions of the moving coordinate system, the first expansion member 2 and / or the second expansion member 3 are moved away from the reference member 1 in two directions along one axial direction, and away from the reference member 1 in a single direction along the other axial direction, so as to form an expanded form of the building unit 100. Figure 11 As an example of this embodiment 1, along any two axes of the third axis Z or the second axis Y or the first axis X, the expansion component moves away from the reference member 1 in two directions of any one of the two axes, and moves away from the reference member 1 in a single direction of the other of the two axes, so as to form an expanded form of the building unit 100. Taking the third axis Z and the second axis Y as an example, refer to Figure 11 The multiple first expansion members 2 and the multiple second expansion members 3 perform a linear movement along two directions of the third axis Z or a rotational movement about the third axis Z, and a linear movement along one direction of the second axis Y or a rotational movement about the second axis Y, thereby forming an expansion body 300 with a rectangular outer contour. In this way, the number of spatial grids of the building unit 100 increases from one spatial grid in the contracted state to six spatial grids in the expanded state, achieving a sixfold expansion ratio.

[0150] Alternatively, in any two axial directions of the moving coordinate system, the first expansion member 2 and / or the second expansion member 3 are moved away from the reference member 1 in two directions along one axial direction, and away from the reference member 1 in two directions along the other axial direction, so as to form an expanded form of the building unit 100. Figure 12 As an example of this embodiment 1, along any two axes of the third axis Z or the second axis Y or the first axis X, the expansion component is respectively moved away from the reference member 1 along two directions of the two axes to form an expanded form of the building unit 100. Taking the third axis Z and the second axis Y as an example, Figure 12The multiple first expansion members 2 and the multiple second expansion members 3 perform a linear movement in two directions along the third axis Z or a rotational movement about the third axis Z, and a linear movement in two directions along the second axis Y or a rotational movement about the second axis Y, thereby forming an expansion body 300 with a rectangular outer contour. In this way, the number of spatial grids of the building unit 100 increases from one spatial grid in the contracted state to nine spatial grids in the expanded state, achieving a ninefold expansion ratio.

[0151] Alternatively, in the three axial directions of the moving coordinate system, the first expansion member 2 and / or the second expansion member 3 are respectively moved away from the reference member 1 along a single direction of the three axial directions to form an expanded form of the building unit 100. Figure 13 As an example of this embodiment 1, the expansion component is moved away from the reference member 1 along a single direction of the third axial direction Z, the second axial direction Y, and the first axial direction X to form an expanded form of the building unit 100. Figure 13 The plurality of first expansion members 2 and the plurality of second expansion members 3 perform a linear movement along one direction of the third axial direction Z or a rotational movement about the third axial direction Z, a linear movement along one direction of the second axial direction Y or a rotational movement about the second axial direction Y, and a linear movement along one direction of the first axial direction X or a rotational movement about the second axial direction Y, thereby forming an expansion body 300 with a cubical outer contour. In this way, the number of spatial grids of the present building unit 100 is expanded from one spatial grid in the contracted state to eight spatial grids in the expanded state, achieving an eightfold expansion ratio.

[0152] Alternatively, in the three axial directions of the moving coordinate system, the first expansion member 2 and / or the second expansion member 3 are respectively moved away from the reference member 1 in two directions along two of the axial directions, and away from the reference member 1 in a single direction along the remaining axial direction, so as to form an expanded form of the building unit 100. Figure 14 As an example of this embodiment 1, along any two axial directions of the third axial direction Z, the second axial direction Y, or the first axial direction X, the expansion component is respectively moved away from the reference member 1 along two directions of the aforementioned two axial directions, and the expansion component is moved away from the reference member 1 along a single direction of the remaining axial directions to form an expanded form of the building unit 100. Figure 14The plurality of first expansion members 2 and the plurality of second expansion members 3 perform a linear movement in two directions along the third axial direction Z or a rotational movement about the third axial direction Z, a linear movement in two directions along the second axial direction Y or a rotational movement about the second axial direction Y, and a linear movement in one direction along the first axial direction X or a rotational movement about the second axial direction Y, thereby forming an expansion body 300 with an outer contour having a rectangular parallelepiped structure. In this way, the number of spatial grids of the present building unit 100 is expanded from one spatial grid in the contracted state to eighteen spatial grids in the expanded state, achieving an eighteen-fold expansion ratio.

[0153] It should be noted that the first expansion piece 2 and the second expansion piece 3 listed in the above example are only used to explain the direction in which the building unit 100 can be expanded. The first expansion piece 2 and the second expansion piece 3 are not limited to Figure 1 The layout shown.

[0154] Based on the above-mentioned building unit 100, this embodiment 1 further provides a device capable of expanding and contracting space, which includes the building unit 100 of the above-mentioned embodiment 1.

[0155] Based on the above-mentioned building unit 100, this embodiment 1 further provides a building with expandable space, which includes the building unit 100 of the above-mentioned embodiment 1.

[0156] Example 2

[0157] The difference between this embodiment 2 and embodiment 1 is that, Figure 15 In this second embodiment, the reference member 1 does not form the outer walls of the frame body 200 or the expansion body 300. Specifically, the building unit 100 includes the reference member 1 and the expansion assembly. The reference member 1 has a base plane 1a that can remain stationary, and the expansion assembly can move relative to the reference member 1 to move closer to and farther from the reference member 1.

[0158] The expansion component includes multiple first expansion pieces 2 and multiple second expansion pieces 3, wherein the multiple first expansion pieces 2 can be close to the reference piece 1 to enclose the reference piece 1 and form a frame body 200 with an outer contour of a hexahedral structure, and the multiple second expansion pieces 3 can be close to the first expansion piece 2 to be connected to the outside of the frame body 200 to form a contracted form of the building unit 100.

[0159] It should be noted that in the building unit 100 of this embodiment 2, the frame body 200 in the collapsed state is enclosed by multiple first expansion members 2. The reference member 1 serves as a reference for the deformation of the building unit 100. When the building unit 100 is in the collapsed state, it is enclosed within the frame body 200 by the multiple first expansion members 2. In the building unit 100 of this embodiment 2, the reference member 1 does not constitute the outer wall of the frame body 200.

[0160] The third axis Z, the second axis Y orthogonal to the third axis Z, and the first axis X form a moving coordinate system. The second extension member 3 and the first extension member 2 are configured to move in the moving coordinate system formed by the first axis X, the second axis Y, and the third axis Z as follows:

[0161] The first expansion piece 2 and the second expansion piece 3 move linearly along the third axial direction Z, the second axial direction Y and the first axial direction X, or the first expansion piece 2 and the second expansion piece 3 rotate around the third axial direction Z, the second axial direction Y and the first axial direction X, so that the first expansion piece 2 and the second expansion piece 3 move away from the reference piece 1 in the two directions of the third axial direction Z, the second axial direction Y and the first axial direction X respectively, and enclose an expansion body 300 whose internal space is larger than the internal space of the frame body 200, forming an expanded form of the building unit 100; the outer contour of the expansion body 300 is a hexahedral structure, and the first expansion piece 2 and the second expansion piece 3 constitute the outer wall of the expansion body 300; and, in the same axial direction, the same first expansion piece 2 and the same second expansion piece 3 perform linear movement or rotational movement once.

[0162] It should be noted that in the building unit 100 of the second embodiment, the expanded body 300 is formed by enclosing a plurality of first expansion members 2 and a plurality of second expansion members 3, and the reference member 1 is enclosed within the expanded body 300. In the building unit 100 of the second embodiment, the reference member 1 does not constitute the outer wall of the expanded body 300.

[0163] refer to Figure 15 In this second embodiment, when the building unit 100 switches from the contracted configuration to the expanded configuration, the multiple first expansion members 2 and the multiple second expansion members 3 perform a linear movement in two directions along the third axial line Z or a rotational movement about the third axial line Z, a linear movement in two directions along the second axial line Y or a rotational movement about the second axial line Y, and a linear movement in two directions along the first axial line X or a rotational movement about the second axial line Y, thereby forming an expanded body 300 with a cubical outer contour. As a result, the number of spatial grids of the building unit 100 in this second embodiment increases from one spatial grid in the contracted configuration to twenty-seven spatial grids in the expanded configuration, achieving a twenty-seven-fold expansion ratio.

[0164] It should be noted that the building unit 100 of the second embodiment involves expansion deformation in three axes, and in each axis, it involves expansion deformation in two directions. Generally speaking, in order to facilitate the first expansion member 2 and the second expansion member 3 to stretch and deform toward the bottom of the reference member 1, the reference member 1 can be arranged off the ground, for example, referring to Figure 16The building unit 100 can adopt the structural arrangement of a tree house, and the reference member 1 can be lifted off the ground by means of a connecting rod or a load-bearing part 10 or other connecting structure, so that space for the first expansion member 2 and the second expansion member 3 to stretch and deform is reserved below the reference member 1.

[0165] Based on the above-mentioned building unit 100, this embodiment 2 further provides a device for expanding space, which includes the building unit 100 of the above-mentioned embodiment 2.

[0166] Based on the above-mentioned building unit 100, this embodiment 2 further provides a building with expandable space, which includes the building unit 100 of the above-mentioned embodiment 2.

[0167] Example 3

[0168] Based on the building unit 100 of Example 1, this Example 3 provides a recreational vehicle as an example of equipment. Taking an example of a 12-fold expansion ratio, the recreational vehicle (not shown) includes a chassis (not shown) with the building unit 100 mounted thereon.

[0169] refer to Figure 17-27 The building unit 100 of this embodiment 3 includes a bottom plate assembly 5, a side plate assembly 6 and a top plate assembly 7, wherein the bottom plate assembly 5 is used to form the bottom of the expansion body 300, the side plate assembly 6 is used to form the peripheral outer wall of the expansion body 300, and the top plate assembly 7 is used to form the top of the expansion body 300.

[0170] The moving coordinate system of this embodiment 3 includes a third axial direction Z, a second axial direction Y, and a first axial direction X that are orthogonal to each other, wherein the third axial direction Z indicates the length axial direction of the extension body 300 and has two directions of the front and back sides, the second axial direction Y indicates the width axial direction of the extension body 300 and has two directions of the left and right sides, and the first axial direction X indicates the height axial direction of the extension body 300 and has two directions of the upper and lower sides.

[0171] refer to Figure 21-22 The bottom plate assembly 5 is the load-bearing structure of the building unit 100, which includes a first bottom plate member 5a, a second bottom plate member 5b, a third bottom plate member 5c, a fourth bottom plate member 5d, a fifth bottom plate member 5e and a sixth bottom plate member 5f, wherein,

[0172] The first bottom plate 5a is a planar plate structure and serves as a reference element 1, serving as a reference for the spatial expansion of the building unit 100. It maintains its shape and position when the building unit 100 switches from its contracted to its expanded configuration. Therefore, heavy external components such as the power module 12 can be connected to the first bottom plate 5a, allowing these heavy external components to remain stationary during the transition between the contracted and expanded configurations of the building unit 100.

[0173] The second bottom plate 5b is a planar plate structure and is located to the left of the first bottom plate 5a. Furthermore, the second bottom plate 5b serves as the second expansion member 3 and is rotatably connected to the first bottom plate 5a, enabling the second bottom plate 5b to rotate relative to the first bottom plate 5a about a third axis Z, thereby allowing the second bottom plate 5b to expand or retract relative to the first bottom plate 5a, thereby achieving either contraction or expansion deformation.

[0174] The third bottom plate 5c is a planar plate structure and is located to the right of the first bottom plate 5a. Furthermore, the third bottom plate 5c also serves as the second expansion member 3 and is rotatably connected to the first bottom plate 5a, enabling the third bottom plate 5c to rotate relative to the first bottom plate 5a about a third axial direction Z, thereby allowing the third bottom plate 5c to expand or retract relative to the first bottom plate 5a, completing either contraction or expansion deformation.

[0175] The fourth bottom plate 5d is a flat plate structure and is located in front of the first bottom plate 5a. In addition, the fourth bottom plate 5d is the first expansion member 2, which includes a fourth front plate portion 50d, a fourth middle plate portion 51d and a fourth rear plate portion 52d, wherein:

[0176] The rear end of the fourth front panel 50d is rotatably linked to the first bottom panel 5a, allowing the fourth front panel 50d to rotate relative to the first bottom panel 5a about the second axis Y. When the building unit 100 is in the collapsed state, the fourth front panel 50d is flipped and folded toward the first bottom panel 5a, rotating the fourth front panel 50d to an upright state.

[0177] The fourth middle plate portion 51d is arranged at the front end of the fourth front plate portion 50d, and the rear end of the fourth middle plate portion 51d is rotatably connected to the front end of the first front plate portion, so that the fourth middle plate portion 51d can rotate relative to the fourth front plate portion 50d around the second axial direction Y. Moreover, when the present building unit 100 is in the contracted state, the fourth middle plate portion 51d is flipped and folded toward the fourth front plate portion 50d, so that the fourth middle plate portion 51d is rotated to an upright state and abuts against the fourth front plate portion 50d.

[0178] The fourth rear panel portion 52d is arranged at the front end of the fourth middle panel portion 51d, and the rear end of the fourth rear panel portion 52d is rotatably connected to the front end of the fourth middle panel portion 51d, so that the fourth rear panel portion 52d can rotate relative to the fourth middle panel portion 51d around the second axial direction Y, and when the building unit 100 is in a contracted form, the fourth rear panel portion 52d moves toward the fourth front panel portion 50d, so that the fourth rear panel portion 52d is close to the fourth middle panel portion 51d, and the fourth middle panel portion 51d and the fourth front panel portion 50d are folded upright.

[0179] The fifth bottom plate member 5e is a planar plate structure and is located on the left side of the fourth bottom plate member 5d. Moreover, when the building unit 100 is in the contracted form, the fifth bottom plate member 5e is retracted on the inner side of the second bottom plate member 5b. Therefore, the fifth bottom plate member 5e is the first expansion member 2, which is rotatably connected to the fourth bottom plate member 5d, so that the fifth bottom plate member 5e can rotate relative to the fourth bottom plate member 5d around the third axial direction Z, so that the fifth bottom plate member 5e can approach or move away from the fourth bottom plate member 5d, completing the contraction deformation or expansion deformation.

[0180] The sixth bottom plate member 5f is a planar plate structure and is located on the right side of the fourth bottom plate member 5d. Moreover, when the building unit 100 is in the contracted form, the sixth bottom plate member 5f is retracted on the inner side of the third bottom plate member 5c. Therefore, the sixth bottom plate member 5f is also the first expansion member 2, which is rotatably connected to the fourth bottom plate member 5d, so that the sixth bottom plate member 5f can rotate relative to the fourth bottom plate member 5d around the third axial direction Z, so that the sixth bottom plate member 5f can approach or move away from the fourth bottom plate member 5d, completing the contraction deformation or expansion deformation.

[0181] refer to Figure 17 、 Figure 26 The side panel assembly 6 is the exterior wall structure of the building unit 100, which includes a first upper left side panel 6a, a first lower left side panel 6b, a second upper left side panel 6c, a second lower left side panel 6d, a first upper right side panel 6e, a first lower right side panel 6f, a second upper right side panel 6g and a second lower right side panel 6h, wherein,

[0182] refer to Figure 27 The outer contours of the first upper left side panel 6a and the first lower left side panel 6b are L-shaped. Taking the first upper left side panel 6a as an example, the first upper left side panel 6a includes a first left side panel portion 60a and a first rear side panel portion 61a that are connected to each other. When the building unit 100 is in the collapsed state, the first left side panel portion 60a is arranged on the left side of the first bottom panel member 5a, and the first rear side panel portion 61a is arranged on the rear side of the first bottom panel member 5a.

[0183] The first upper left panel 6a and the first lower left panel 6b are both second extension members 3, and the first upper left panel 6a is sleeved onto the first lower left panel 6b, allowing the first upper left panel 6a to rise and fall relative to the first lower left panel 6b. When the building unit 100 is in the collapsed state, the first upper left panel 6a is sleeved onto the first lower left panel 6b, allowing the first lower left panel 6b to be retracted within the first upper left panel 6a, thereby allowing the exterior wall structure of the building unit 100 to complete its vertical collapse.

[0184] It is understandable that there are various ways to achieve the lifting connection between the first upper left side plate 6a and the first lower left side plate 6b, and the two can achieve lifting movements through linear transmission components such as air cylinders, oil cylinders, and guide rails. For example, as an example of this embodiment, a accommodating chamber can be provided in the first lower left side plate 6b, and a lifting cylinder is provided in the accommodating chamber. The first upper left side plate 6a is sleeved outside the first lower left side plate 6b and is connected to the piston rod of the lifting cylinder. In this way, when the lifting cylinder is actuated to cause the piston rod to rise, the first upper left side plate 6a will rise relative to the first lower left side plate 6b, and when the lifting cylinder is actuated to cause the piston rod to descend, the first upper left side plate 6a will descend relative to the first lower left side plate 6b, thereby enabling the first upper left side plate 6a to complete contraction deformation or expansion deformation in the height direction relative to the first lower left side plate 6b.

[0185] The second upper left side panel 6c and the second lower left side panel 6d are flat plate structures and are arranged on the inner side of the first upper left side panel 6a and the outer side of the bottom panel assembly 5. Therefore, the second upper left side panel 6c and the second lower left side panel 6d are both second expansion members 3. In addition, the second upper left side panel 6c and the second lower left side panel 6d are both linearly movable relative to the first upper left side panel 6a and the first lower left side panel 6b along the third axial direction Z, so that the second upper left side panel 6c and the second lower left side panel 6d can move toward the front end of the first bottom panel 5a or toward the rear end of the first bottom panel 5a along the third axial direction Z, thereby enabling the exterior wall structure of the building unit 100 to undergo expansion or contraction deformation in the longitudinal direction. In addition, the second upper left side panel 6c is sleeved onto the second lower left side panel 6d, allowing the second upper left side panel 6c to rise and fall relative to the second lower left side panel 6d, thereby enabling the second upper left side panel 6c and the second lower left side panel 6d to undergo contraction or expansion deformation in the height direction. The matching structure of the second upper left side plate 6c and the second lower left side plate 6d for realizing the lifting action can adopt the matching structure of the first upper left side plate 6a and the first lower left side plate 6b, which will not be repeated here.

[0186] The outer contours of the first upper right side panel 6e and the first lower right side panel 6f are also L-shaped, and at the rear end of the first bottom plate member 5a, the first upper right side panel 6e is located in front of the first upper left side panel 6a, so that when the building unit 100 is in a contracted form, the first upper right side panel 6e cooperates with the first bottom plate member 5a, so the first upper right side panel 6e is the first expansion member 2 in the building unit 100.

[0187] Furthermore, the first upper right panel 6e is sleeved onto the first lower right panel 6f, allowing the first upper right panel 6e to rise and fall relative to the first lower right panel 6f. When the present building unit 100 is in the collapsed state, the first upper right panel 6e is sleeved onto the first lower right panel 6f, allowing the first lower right panel 6f to be retracted within the first upper right panel 6e, thereby enabling the exterior wall structure of the present building unit 100 to complete contraction and deformation in the height direction. Furthermore, in this manner, the first lower right panel 6f serves as the second expansion member 3 in the present building unit 100.

[0188] Similar to the second upper left panel 6c and the second lower left panel 6d, the second upper right panel 6g and the second lower right panel 6h are both flat panels. The second upper right panel 6g and the second lower right panel 6h are arranged on the inner side of the first upper right panel 6e and on the outer side of the bottom panel assembly 5. Therefore, the second upper right panel 6g and the second lower right panel 6h are both second expansion members 3.

[0189] Moreover, the second upper right side panel 6g and the second lower right side panel 6h can both move linearly along the third axial direction Z relative to the first upper right side panel 6e and the first lower right side panel 6f, so that the second upper right side panel 6g and the second lower right side panel 6h can move along the third axial direction Z toward the front end of the first bottom plate member 5a or toward the rear end of the first bottom plate member 5a, thereby enabling the exterior wall structure of the building unit 100 to complete expansion deformation or contraction deformation in the length direction, and the second upper right side panel 6g is sleeved on the second lower right side panel 6h, so that the second upper right side panel 6g can be raised and lowered relative to the second lower right side panel 6h, thereby enabling the second upper right side panel 6g and the second lower right side panel 6h to complete contraction deformation or expansion deformation in the height direction.

[0190] The matching structure of the first right upper side plate 6e and the first right lower side plate 6f, and the second right upper side plate 6g and the second right lower side plate 6h to achieve the lifting action can adopt the matching structure of the first left upper side plate 6a and the first left lower side plate 6b, which will not be repeated here.

[0191] refer to Figure 23-25 The top plate assembly 7 is the top structure of the building unit 100, which includes a first top plate member 7a, a second top plate member 7b, a third top plate member 7c, a fourth top plate member 7d, a fifth top plate member 7e and a sixth top plate member 7f, wherein:

[0192] The first top panel 7a is the first expansion member 2. Specifically, the first top panel 7a has an L-shaped outer profile and includes a first top panel portion 70a and a first end panel portion 71a connected to each other. When the present building unit 100 is in the collapsed configuration, the first top panel portion 70a is located above the first bottom panel 5a, and the first end panel portion 71a is located at the rear end of the side panel assembly 6. A lifting mechanism may be provided between the first bottom panel 5a and the first top panel 70a. The lifting mechanism can be used to raise and lower the first top panel 70a relative to the first bottom panel 5a, thereby enabling the first top panel 7a and the first bottom panel 5a to complete either contraction or expansion deformation in the height direction.

[0193] The second top plate member 7b is a second expansion member 3 and is a flat plate structure disposed above the first top plate portion 70a. Furthermore, the second top plate member 7b is linearly movable relative to the first top plate portion 70a along the third axial direction Z, allowing the second top plate member 7b to move away from the first top plate portion 70a or toward the first end plate portion 71a along the third axial direction Z, thereby enabling the top structure of the building unit 100 to expand or contract in the longitudinal direction.

[0194] The third top panel 7c and the fourth top panel 7d are both second extension members 3. Specifically, they are flat plate structures, and the third top panel 7c is rotatably connected to the left side of the first top panel 70a, while the fourth top panel 7d is rotatably connected to the right side of the first top panel 70a. This allows the third and fourth top panels 7c and 7d to rotate relative to the first top panel 70a about the third axial direction Z, thereby allowing the third and fourth top panels 7c and 7d to expand or retract relative to the first top panel 70a, thereby enabling the top structure of the building unit 100 to complete contraction or expansion deformation in the width direction.

[0195] The fifth top panel 7e and the sixth top panel 7f are also the second extension member 3. Specifically, the two are flat plate structures, and the fifth top panel 7e is rotatably connected to the left side of the second top panel 7b, and the sixth top panel 7f is rotatably connected to the right side of the second top panel 7b. When the building unit 100 is in a contracted form, the fifth top panel 7e is on the outside of the third top panel 7c, and the sixth top panel 7f is on the outside of the fourth top panel 7d.

[0196] The fifth top panel 7e and the sixth top panel 7f can both rotate around the third axial direction Z relative to the second top panel 7b. In this way, the third top panel 7c and the fourth top panel 7d can be expanded or retracted relative to the second top panel 7b, thereby enabling the top structure of the building unit 100 to complete contraction deformation or expansion deformation in the width direction.

[0197] It can be understood that the bottom plate assembly 5, the side plate assembly 6 and the top plate assembly 7 can all move in the opposite direction along their own stretching and deformation movement paths to complete the contraction deformation.

[0198] refer to Figure 17-27 When the building unit 100 of the third embodiment is in the contracted state, the bottom plate assembly 5, the side plate assembly 6 and the top plate assembly 7 all move toward the first bottom plate member 5a, that is, the position of the reference member 1, wherein,

[0199] The retracted state of the floor assembly 5 is as follows: the second floor member 5b and the third floor member 5c are both rotated toward the first floor member 5a to an upright position, retracting the second floor member 5b and the third floor member 5c relative to the first floor member 5a. The fifth floor member 5e and the sixth floor member 5f are both rotated toward the fourth floor member 5d to an upright position, retracting the fifth floor member 5e and the sixth floor member 5f relative to the fourth floor member 5d. Furthermore, the fourth front plate portion 50d and the fourth middle plate portion 51d are rotated toward the first floor member 5a to an upright position, retracting the fourth floor member 5d relative to the first floor member 5a. As a result, the fifth floor member 5e is positioned to the left of the first floor member 5a, the sixth floor member 5f is positioned to the right of the first floor member 5a, the fourth front plate portion 50d is positioned to the front of the first floor member 5a, the second floor member 5b is positioned to the left of the fifth floor member 5e, and the third floor member 5c is positioned to the right of the sixth floor member 5f.

[0200] The contracted state of the side panel assembly 6 is as follows: the second upper left side panel 6c is sleeved on the second lower left side panel 6d, so that the second lower left side panel 6d is folded inside the second upper left side panel 6c, and the second upper left side panel 6c is folded to the left side of the second bottom panel 5b; the first upper left side panel 6a is sleeved on the first lower left side panel 6b, so that the first lower left side panel 6b is folded inside the first upper left side panel 6a, and the first upper left side panel 6a is folded to the second upper left side panel. The left side of the plate 6c; the second upper right side plate 6g is mounted on the second lower right side plate 6h, so that the second lower right side plate 6h is folded into the inside of the second upper right side plate 6g, and the second upper right side plate 6g is folded into the right side of the second bottom plate 5b; the first upper right side plate 6e is mounted on the first lower right side plate 6f, so that the first lower right side plate 6f is folded into the inside of the first upper right side plate 6e, and the first upper right side plate 6e is folded into the right side of the second upper right side plate 6g.

[0201] The contracted state of the top plate assembly 7 is as follows: the first top plate member 7a descends relative to the first bottom plate member 5a along the first axial direction X, so that the first top plate member 7a is close to the first bottom plate member 5a, and the second top plate member 7b moves linearly relative to the first top plate portion 70a along the third axial direction Z, so that the second top plate member 7b is far closer to the first end plate portion 71a along the third axial direction Z, and the third top plate member 7c rotates relative to the first top plate portion 70a around the third axial direction Z, thereby being retracted to the first upper left corner relative to the first top plate portion 70a. The left side plate 6a, and the fourth top plate member 7d rotates around the third axial direction Z relative to the first top plate portion 70a, thereby being retracted to the right side of the first upper right side plate 6e relative to the first top plate portion 70a; and the fifth top plate member 7e rotates around the third axial direction Z relative to the second top plate portion, thereby being retracted to the left side of the third top plate member 7c relative to the second top plate portion; and the sixth top plate member 7f rotates around the third axial direction Z relative to the second top plate portion, thereby being retracted to the right side of the fourth top plate member 7d relative to the second top plate portion.

[0202] Based on the switching of the bottom panel assembly 5, the side panel assembly 6, and the top panel assembly 7 into the aforementioned retracted state, the first bottom panel 5a cooperates with the fourth bottom panel 5d, the first top panel 7a, the fifth bottom panel 5e, the sixth bottom panel 5f, and the first upper right side panel 6e to form the frame 200 of the present building unit 100. The frame 200 is a hexahedral structure, and the projections of the frame 200 on each reference plane of the moving coordinate system are all square. The second bottom panel 5b, the third bottom panel 5c, the fourth bottom panel 5d, the first upper left side panel 6a, the first lower left side panel 6b, the second upper left side panel 6c, the second lower left side panel 6d, the first lower right side panel 6f, the second upper right side panel 6g, and the second lower right side panel 6h, the second top panel 7b, the third top panel 7c, the fourth top panel 7d, the fifth top panel 7e, and the sixth top panel 7f serve as the second extension member 3, which is positioned close to the outside of the frame 200.

[0203] refer to Figure 17-27 In the third embodiment, when the building unit 100 is in the expanded state, the bottom plate assembly 5, the side plate assembly 6 and the top plate assembly 7 are all away from the first bottom plate member 5a, wherein,

[0204] The expanded form of the bottom plate assembly 5 is as follows: the second bottom plate member 5b and the third bottom plate member 5c are respectively rotated to a horizontal state relative to the first bottom plate member 5a, so that the second bottom plate member 5b and the third bottom plate member 5c are unfolded relative to the first bottom plate member 5a; and the fourth bottom plate member 5d, the fifth bottom plate member 5e and the sixth bottom plate member 5f move linearly relative to the first bottom plate member 5a along the first axis, so that the fourth bottom plate member 5d, the fifth bottom plate member 5e and the sixth bottom plate member 5f are away from the first bottom plate member 5a, and the fourth bottom plate member 5d and the fifth bottom plate member 5e are respectively rotated to a horizontal state relative to the fourth bottom plate member 5d, so that the second bottom plate member 5b and the third bottom plate member 5c are unfolded relative to the fourth bottom plate member 5d, and the fourth front plate portion 50d is rotated relative to the first bottom plate member 5a, so that the fourth front plate portion 50d is unfolded along the third axial direction Z, and the fourth middle plate portion 51d is rotated relative to the fourth front plate portion 50d, so that the fourth middle plate portion 51d is unfolded along the third axial direction Z.

[0205] The expanded form of the side panel assembly 6 is as follows: the first upper left side panel 6a rises relative to the first lower left side panel 6b along the first axial direction X, so that the first upper left side panel 6a is lifted relative to the first lower left side panel 6b. Similarly, the second upper left side panel 6c rises relative to the second lower left side panel 6d along the first axial direction X, the first upper right side panel 6e rises relative to the first lower right side panel 6f along the first axial direction X, and the second upper right side panel 6g rises relative to the second lower right side panel 6h along the first axial direction X, thereby completing the expansion deformation of the side panel assembly 6 in the first axial direction X; and the second upper left side panel 6 c, the second left lower side plate 6d moves linearly along the third axial direction Z relative to the first left upper side plate 6a and the first left lower side plate 6b, so that the second left upper side plate 6c and the second left lower side plate 6d are respectively away from the first left upper side plate 6a and the first left lower side plate 6b. Similarly, the second right upper side plate 6g and the second right lower side plate 6h move linearly along the third axial direction Z relative to the first right upper side plate 6e and the first right lower side plate 6f, so that the second right upper side plate 6g and the second right lower side plate 6h move to the first right upper side plate 6e and the first right lower plate 6f, respectively. The first upper left side plate 6a and the first lower left side plate 6b move linearly relative to the first bottom plate 5a along the second axial direction Y, so that the first upper left side plate 6a and the first lower left side plate 6b move to the left side of the first bottom plate 5a along the second axial direction Y, and the second upper left side plate 6c and the second lower left side plate 6d move linearly relative to the fourth bottom plate 5d along the second axial direction Y, so that the second upper left side plate 6c and the second lower left side plate 6d move to the left of the fourth bottom plate 5d along the second axial direction Y. side, and the first upper right side plate 6e and the first lower right side plate 6f move linearly along the second axial direction Y relative to the first bottom plate 5a, so that the first upper right side plate 6e and the first lower right side plate 6f move along the second axial direction Y to the right side of the first bottom plate 5a, and the second upper right side plate 6g and the second lower right side plate 6h move linearly along the second axial direction Y relative to the fourth bottom plate 5d, so that the second upper right side plate 6g and the second lower right side plate 6h move along the second axial direction Y to the right side of the fourth bottom plate 5d, thereby completing the expansion deformation of the side plate assembly 6 in the second axial direction Y.

[0206] The expanded state of the top plate assembly 7 is as follows: the first top plate member 7a rises relative to the first bottom plate member 5a along the first axial direction X, so that the first top plate member 7a is lifted; and the second top plate member 7b, the fifth top plate member 7e, and the sixth top plate member 7f move linearly relative to the first top plate portion 70a along the third axial direction Z, so that the second top plate member 7b, the fifth top plate member 7e, and the sixth top plate member 7f move to the front side of the first top plate member 7a in the third axial direction Z; and the third top plate member 7c rotates relative to the first top plate portion 70a around the third axial direction Z. The third top panel component 7c is unfolded to the left side of the first top panel portion 70a, and the fourth top panel component 7d is rotated around the third axial direction Z relative to the first top panel portion 70a, so that the fourth panel component is unfolded to the right side of the first top panel portion 70a; and the fifth top panel component 7e is rotated around the third axial direction Z relative to the second top panel component 7b, so that the fifth top panel component 7e is unfolded to the left side of the second top panel component 7b, and the sixth top panel component 7f is rotated around the third axial direction Z relative to the second top panel component 7b, so that the sixth panel component is unfolded to the right side of the second top panel component 7b.

[0207] Based on the switching of the above-mentioned expansion state of the bottom plate assembly 5, the side plate assembly 6 and the top plate assembly 7, the first bottom plate 5a, the second bottom plate 5b, the third bottom plate 5c, the fourth bottom plate 5d, the fifth bottom plate 5e, the sixth bottom plate 5f, the first upper left side plate 6a, the first lower left side plate 6b, the second upper left side plate 6c, the second lower left side plate 6d, the first upper right side plate 6e, the first lower right side plate 6f, the second upper right side plate 6g, the second lower right side plate 6h, the first top plate 7a, the second top plate 7b, the third top plate 7c, the fourth top plate 7d, the fifth top plate 7e and the sixth top plate 7f cooperate with each other to form the expansion body 300 of the present building unit 100. The expansion body 300 is a hexahedral structure, and the projections of the frame body 200 on each reference plane of the moving coordinate system are all square, and the first bottom plate 5a, the second bottom plate 5b, the third bottom plate 5c, the fourth bottom plate 5d, the fifth bottom plate 5e, the sixth bottom plate 5f, the first upper left side plate 6a, the first lower left side plate 6b, the second upper left side plate 6c, the second lower left side plate 6d, the first upper right side plate 6e, the first lower right side plate 6f, the second upper right side plate 6g, the second lower right side plate 6h, the first top plate 7a, the second top plate 7b, the third top plate 7c, the fourth top plate 7d, the fifth top plate 7e and the sixth top plate 7f together constitute the outer wall of the expansion body 300.

[0208] Moreover, it can be seen from the retracted and expanded forms of the bottom panel assembly 5, the side panel assembly 6, and the top panel assembly 7 that, in the process of the RV of the present embodiment 3 switching between the retracted and expanded forms, the first bottom panel 5a to the sixth bottom panel 5f, the first top panel 7a to the sixth top panel 7f, and the first upper left side panel 6a to the second lower right side panel 6h will have multiple deformation steps. In these deformation steps, the first bottom panel 5a to the sixth bottom panel 5f, the first top panel 7a to the sixth top panel 7f, and the first upper left side panel 6a to the second lower right side panel 6h will still satisfy:

[0209] The first expansion piece 2 and / or the second expansion piece 3 currently performing movement move in the same axial direction, and the same first expansion piece 2 and the same second expansion piece 3 perform linear movement along the same axial direction, and / or the same first expansion piece 2 and the same second expansion piece 3 perform rotational movement around the same axial direction once.

[0210] It should be noted that the hexahedron structure formed by the frame body 200 and the extension body 300 is not required to be a regular hexahedron. Depending on the required configuration of the RV, the bottom panel assembly 5, the side panel assembly 6, and the top panel assembly 7 can have different specifications. For example, the third top panel member 7c and the fourth top panel member 7d can respectively extend to the outside of the side panel assembly 6, so that the third top panel member 7c and the fourth top panel member 7d form an eaves structure. Of course, depending on the required functional configuration of the RV, in addition to the bottom panel assembly 5, the side panel assembly 6, and the top panel assembly 7, structures such as a balcony assembly 11 and a shielding panel assembly can be added. These additional structures are loaded on the outside of the frame body 200 as the second extension member 3.

[0211] It should be noted that when the bottom plate assembly 5, the top plate assembly 7 and the side plate assembly 6 switch between the contracted form and the expanded form, the order in which their internal structures perform linear movement or rotational movement can be adjusted according to the power mechanism configured between or within the bottom plate assembly 5, the top plate assembly 7 and the side plate assembly 6. For example, the second top plate 7b, the fifth top plate 7e and the sixth top plate 7f can first be linearly moved along the third axial direction Z to the front side of the first top plate 7a in the third axial direction Z, and then the fifth top plate 7e and the sixth top plate 7f can be rotated. The fifth top plate 7e and the sixth top plate 7f can also be rotated first, and then linearly moved along the third axial direction Z together with the second top plate 7b to the front side of the first top plate 7a in the third axial direction Z. Of course, in this order, the third top plate 7c and the fourth top plate 7d need to be flipped and unfolded before the fifth top plate 7e and the sixth top plate 7f, or flipped and unfolded synchronously with the fifth top plate 7e and the sixth top plate 7f.

[0212] It is understandable that when the bottom plate assembly 5, the top plate assembly 7, and the side plate assembly 6 switch between the contracted form and the expanded form, taking the top plate assembly 7 as an example, the second top plate member 7b, the fifth top plate member 7e, and the sixth top plate member 7f can be synchronously moved linearly along the first axial direction X, so that the first expansion member 2 and the second expansion member 3 that perform linear movement in the same axial direction and in the same direction move synchronously; and the fifth top plate member 7e and the sixth top plate member 7f can be synchronously rotated, so that the two second expansion members 3 that perform rotational movement around the same axial direction move synchronously. Moreover, taking the side plate assembly 6 as an example, the first upper left side plate 6a and the first upper right side plate 6e can be synchronously moved linearly along the second axial direction Y relative to the first bottom plate member 5a, so that the two second expansion members 3 that perform linear movement in the same axial direction and in opposite directions move synchronously. Of course, different connection relationships between the bottom plate assembly 5, the top plate assembly 7 and the side plate assembly 6 can also make the two first extension members 2 or the two second extension members 3 that perform linear movement in the same axis and in the same direction move synchronously, or the two first extension members 2 that perform rotational movement around the same axis or the first extension member 2 and the second extension member 3 move synchronously, or the two first extension members 2 that perform linear movement in the same axis and opposite directions or the first extension member 2 and the second extension member 3 move synchronously, which will not be repeated here.

[0213] It should be noted that the bottom plate assembly 5, the top plate assembly 7 and the side plate assembly 6 can be driven by mechanical structures such as a cylinder assembly, a hydraulic cylinder assembly or a rotating shaft assembly, so that each plate body can complete extension deformation or contraction deformation along its respective movement path.

[0214] In summary, the building unit 100 provided in the embodiment of the present invention controls each first expansion member 2 and each second expansion member 3 to perform a linear movement along the same axis and / or a rotational movement around the same axis, so that the building unit 100 completes the deformation of the expandable space, which can effectively reduce the difficulty and cost of realizing the synchronous movement of the same first expansion member 2 or the same second expansion member 3. In this way, the building unit 100 can achieve the expansion deformation or contraction deformation of the space with a simple and effective deformation action in conjunction with a simple and effective deformation process, so that the building unit 100 can ensure that the accumulated error value is maintained within an appropriate range during the switching between the contracted state and the expanded state, thereby ensuring that the building unit 100 can repeatedly and stably complete the deformation of the expandable space, and the spatial deformation action is simple and reliable, which is suitable for promotion and use in the civilian field. At the same time, the building unit 100 can ensure that the first expansion member 2 and the second expansion member 3 perform improved synchronous motion control accuracy, thereby greatly reducing the deformation difficulty and deformation cost of the expandable space, further improving the stability and reliability of the expandable space, and ensuring the safety of the expandable space.

[0215] In addition, the building unit 100 provided by the embodiment of the present invention controls the first expansion piece 2 and / or the second expansion piece 3 that are currently moving to move in the same axial direction. In this way, during the spatial deformation of the building unit 100, the multi-dimensional movement action required to realize the deformation and opening and closing of the three-dimensional space is decomposed into multiple one-dimensional movement actions. The linear movement or rotational movement performed by the first expansion piece 2 and the second expansion piece 3 are all one-dimensional movements, and will not generate a two-dimensional motion focus inside the building unit 100, thereby effectively avoiding the problem that the action focus hinders the expansion or contraction of the building unit 100, so that the building unit 100 has the ability to realize three-dimensional spatial deformation and opening and closing, greatly expanding the achievable space expansion ratio of the building unit 100.

[0216] In addition, the building unit 100 provided in the embodiment of the present invention uses the frame body 200 as the morphological reference of the contracted form, and the frame body 200 and the expansion body 300 have relatively arranged walls in each axial direction of the moving coordinate system, and the walls in the three axial directions are mutually enclosed, so that the building unit 100 will have a relatively regular shape structure. In this way, the building unit 100 can be simply and effectively switched to the expanded form based on the one-dimensional movement mode configured by the first expansion part 2 and the second expansion part 3, thereby providing a safe, effective, simple and reliable three-dimensional space expansion method for buildings with expandable space. Moreover, based on its own relatively regular shape structure, the building unit 100 enables the reference part 1, the first expansion part 2 and the second expansion part 3 to be configured and produced in a standardized structure, which not only makes the building unit 100 suitable for large-scale standardized production, but also reduces the production cost of expandable space buildings, making the building unit 100 suitable for promotion and application in the civil field.

[0217] Moreover, the building unit 100 provided by the embodiment of the present invention is a frame body 200 formed by cooperation of a plurality of first expansion parts 2 and a reference part, or a frame body 200 formed by cooperation of a plurality of first expansion parts 2, which can have an internal space that is not interfered with during the switching process between the contracted form and the expanded form. In this way, the building unit 100 can use the internal space of the frame body 200 to pre-configure the furniture and necessities required for the user's life, thereby making the building unit 100 more suitable for the user's living and making the building unit more suitable for civilian promotion.

[0218] In addition, the building unit 100 provided by the embodiment of the present invention controls each first expansion piece 2 and each second expansion piece 3 to perform one linear movement or rotational movement on the same axis, thereby limiting the number of linear movements of each first expansion piece 2 and each second expansion piece 3 along each axis or rotational movements around each axis. In this way, when the building unit 100 performs expansion deformation with several times the expansion ratio, the first expansion piece 2 and the second expansion piece 3 can be expanded and deformed in an orderly manner, so that the building unit 100 can complete multiple-rate expansion deformation with a simple and effective deformation path. Moreover, the building unit 100 provided by the embodiment of the present invention controls each first expansion piece 2 and / or each second expansion piece 3 to move synchronously on the same axis, so that when the building unit 100 switches between the contracted form and the expanded form, the contraction deformation or expansion deformation step can be effectively saved, thereby saving the deformation control step of the building unit 100, further reducing the deformation difficulty and deformation cost of the expandable space, and improving the stability and reliability of the expandable space.

[0219] The building and equipment provided by the embodiments of the present invention both include the aforementioned building unit 100 and also have the beneficial effects possessed by the aforementioned building unit 100.

[0220] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A building unit with expandable and contractible space, characterized in that: The building unit has a contracted state and an expanded state that can be switched between each other, and the building unit includes: A reference member having a base plane capable of being kept stationary; A plurality of first expansion members are movably connected to each other, or movably connected to the reference member, so as to be able to approach and move away from the reference member; a plurality of second expansion members, which are movably connected to each other and are also movably connected to the first expansion member so as to be able to approach and move away from the first expansion member, or are also movably connected to the reference member so as to be able to approach and move away from the reference member; The first extension member and the second extension member are configured to move in a moving coordinate system consisting of three axes, wherein a first axis of the moving coordinate system is an axis perpendicular to the base plane, and a second axis and a third axis of the moving coordinate system are two axes orthogonal to the first axis; the movement of the first extension member and the second extension member is as follows: The first extension member performs linear movement along at least one axial direction and / or rotational movement around at least one axial direction, so that the first extension member approaches the reference member and cooperates with the reference member to form a frame body, wherein the frame body has oppositely arranged wall surfaces in each axial direction of the moving coordinate system, the reference member and the first extension member constitute the wall surfaces of the frame body, and the wall surfaces in the three axial directions are mutually enclosed; The second expansion member performs linear movement along at least one axial direction and / or rotational movement around at least one axial direction, so that the second expansion member is close to the outside of the frame body, and the building unit is in the contracted state; The first expansion member and the second expansion member perform linear movement along at least one axial direction and / or rotational movement around at least one axial direction, so that the two members are separated from the reference member, thereby forming an expansion body together with the reference member, wherein the first expansion member, the second expansion member and the reference member together constitute the outer wall of the expansion body, and at this time, the building unit is in the expanded form; and During the process of the building unit switching between the contracted form and the expanded form, the first expansion member and / or the second expansion member currently performing movement move in the same axial direction, and the same first expansion member and the same second expansion member perform linear movement along the same axial direction, and / or the same first expansion member and the same second expansion member perform rotational movement around the same axial direction once.

2. The building unit according to claim 1, characterized in that The first expansion member and the second expansion member are further configured such that: along the same direction of the same axis, at least two of the first expansion members currently performing linear movement move synchronously, or along the same direction of the same axis, at least two of the second expansion members currently performing linear movement move synchronously, or along the same direction of the same axis, the first expansion member and the second expansion member currently performing linear movement move synchronously; Alternatively, the first expansion member and the second expansion member are further configured such that: along opposite directions of the same axial direction, at least two of the first expansion members currently performing linear movement move synchronously; or, along opposite directions of the same axial direction, at least two of the second expansion members currently performing linear movement move synchronously; or, along opposite directions of the same axial direction, the first expansion member and the second expansion member currently performing linear movement move synchronously; Alternatively, the first expansion member and the second expansion member are further configured such that: in the same direction around the same axis, at least two of the first expansion members currently performing rotational movement move synchronously; or, in the same direction around the same axis, at least two of the second expansion members currently performing rotational movement move synchronously; or, in the same direction around the same axis, the first expansion member and the second expansion member currently performing rotational movement move synchronously; Alternatively, the first expansion member and the second expansion member are further configured as follows: at least two of the first expansion members that are currently performing rotational movement move synchronously in opposite directions around the same axis, or at least two of the second expansion members that are currently performing rotational movement move synchronously in opposite directions around the same axis, or the first expansion member and the second expansion member that are currently performing rotational movement move synchronously in opposite directions around the same axis.

3. The building unit according to claim 1, characterized in that The expansion body has oppositely arranged walls in each axial direction of the moving coordinate system, and the walls in the three axial directions surround each other; At least one of the first expansion pieces, and / or at least one of the second expansion pieces includes a first panel portion and a second panel portion that intersect with each other, the first panel portion and the second panel portion are respectively located on different sides of the expansion body and can synchronously perform linear movement or rotational movement.

4. The building unit according to claim 1, characterized in that The first expansion member is received or partially received in the reference member.

5. The building unit according to claim 1, characterized in that The frame body has a basic space, and during the process of the building unit switching between the contracted state and the expanded state, the first expansion member and the second expansion member remain outside the basic space; Alternatively, the frame body has a basic space, and during the process of the building unit switching between the contracted form and the expanded form, the first expansion member and the second expansion member remain outside the basic space, and the basic space is limited by the structural boundary of the reference member.

6. The building unit according to claim 1, characterized in that: The building unit has one spatial grid in the contracted state, and has multiple spatial grids in the expanded state; and the difference in the number of spatial grids between the contracted state and the expanded state is the spatial expansion ratio of the building unit; Each of the space grids is separated by the boundaries of the first expansion component, the second expansion component and the reference component themselves or by the boundaries between them.

7. The building unit according to claim 6, characterized in that: The first expansion member and the second expansion member perform only one linear movement or rotational movement in the same axial direction, so that the number of space grids expanded by the building unit in the same axial direction from the base member is two or three; In the expansion body, in a single direction of any axial direction of the moving coordinate system, the first expansion member or the second expansion member is connected to the side of the reference member; or, in two directions of any axial direction of the moving coordinate system, the reference member is respectively connected to at least one of the first expansion member and the second expansion member, so that the reference member is located between the first expansion member or the second expansion member; Furthermore, according to the number of axes in which the plurality of first expansion members and the plurality of second expansion members respectively perform linear movement or rotational movement, the building unit forms the expansion body with different expansion ratios.

8. The building unit according to claim 1, characterized in that The first expansion member is a single flat plate structure, or the first expansion member is a bent structure in which multiple planar structures are connected.

9. The building unit according to claim 1, characterized in that: In the expansion body, the reference member is connected to the first expansion member or the second expansion member in a single direction of any axial direction of the moving coordinate system; or, In the expansion body, the reference member is connected to at least one of the first expansion member and the second expansion member in two directions of any axial direction of the moving coordinate system.

10. The building unit according to claim 9, characterized in that: The first expansion member and / or the second expansion member moves away from the reference member along a single direction of any axial direction of the moving coordinate system to form an expanded form of the building unit.

11. The building unit according to claim 9, characterized in that The first expansion member and / or the second expansion member are respectively moved away from the reference member in two directions along any axial direction of the moving coordinate system to form an expanded form of the building unit.

12. The building unit according to claim 9, characterized in that In any two axial directions of the moving coordinate system, the first expansion member and / or the second expansion member respectively move away from the reference member in a single direction along the two axial directions to form an expanded form of the building unit.

13. The building unit according to claim 9, characterized in that In any two axial directions of the moving coordinate system, the first expansion member and / or the second expansion member moves away from the reference member in two directions along one axial direction and away from the reference member in a single direction along the other axial direction to form an expanded form of the building unit.

14. The building unit according to claim 9, characterized in that In any two axial directions of the moving coordinate system, the first expansion member and / or the second expansion member are away from the reference member in two directions along one axial direction and away from the reference member in two directions along the other axial direction to form an expanded form of the building unit.

15. The building unit according to claim 9, characterized in that In the three axial directions of the moving coordinate system, the first expansion member and / or the second expansion member are respectively moved away from the reference member in a single direction of the three axial directions to form an expanded form of the building unit.

16. The building unit according to claim 9, characterized in that Among the three axial directions of the moving coordinate system, the first expansion member and / or the second expansion member respectively move away from the reference member in a single direction along two of the axial directions, and move away from the reference member in two directions along the remaining axial direction, so as to form an expanded form of the building unit.

17. The building unit according to claim 9, characterized in that Among the three axial directions of the moving coordinate system, the first expansion member and / or the second expansion member respectively move away from the reference member in two directions along two of the axial directions, and move away from the reference member in a single direction along the remaining axial direction, so as to form an expanded form of the building unit.

18. A building unit with expandable and contractible space, characterized in that: The building unit has a contracted state and an expanded state that can be switched between each other, and the building unit includes: A reference member having a base plane capable of being kept stationary; a plurality of first expansion members, which are movably connected to each other, and at least one of the first expansion members is movably connected to the reference member so as to be able to approach and move away from the reference member; a plurality of second expansion members, which are movably connected to each other and are also movably connected to the first expansion member so as to be able to move closer to and farther away from the first expansion member; The first extension member and the second extension member are configured to move in a moving coordinate system consisting of three axes, wherein a first axis of the moving coordinate system is an axis perpendicular to the base plane, and a second axis and a third axis of the moving coordinate system are two axes orthogonal to the first axis; the movement of the first extension member and the second extension member is as follows: The first expansion member performs linear movement along at least one axial direction and / or rotational movement around at least one axial direction, so that the first expansion member approaches and encloses the reference member, thereby forming a frame body, wherein the frame body has oppositely arranged wall surfaces in each axial direction of the moving coordinate system, and the wall surfaces in the three axial directions enclose each other; The second expansion member performs linear movement along at least one axial direction and / or rotational movement around at least one axial direction, so that the second expansion member is close to the outside of the frame body, and the building unit is in the contracted state; The first expansion member and the second expansion member perform linear movement along at least one axial direction and / or rotational movement around at least one axial direction, so that the two members are respectively away from the reference member in two directions along the three axial directions, thereby enclosing and forming an expansion body, wherein the first expansion member and the second expansion member constitute the outer wall of the expansion body, and at this time, the building unit is in the expanded form; and During the process of the building unit switching between the contracted form and the expanded form, the first expansion member and / or the second expansion member currently performing movement move in the same axial direction, and the same first expansion member and the same second expansion member perform linear movement along the same axial direction, and / or the same first expansion member and the same second expansion member perform rotational movement around the same axial direction once.

19. A building with expandable and contractible space, characterized in that: The invention comprises the building unit described in any one of claims 1 to 17.

20. A building with expandable and contractible space, characterized in that: The invention comprises a load-bearing block and the building unit according to claim 18, wherein the load-bearing block is connected to the reference member.

21. A device capable of expanding and contracting space, characterized in that: The invention comprises the building unit described in any one of claims 1 to 18.

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