A modular wall frame and wall unit

Abstract

This article provides a modular wall frame and a modular wall unit. The modular wall frame includes: a vertical frame, including a body and a first fixing part fixedly connected to the body; and a horizontal frame with a mating groove. The first fixing part is pressed into the mating groove through the opening of the mating groove, so that the vertical frame and the horizontal frame are pressed together. The modular wall frame includes at least two spaced-apart vertical frames and two spaced-apart horizontal frames, with the two horizontal frames located on opposite sides of the vertical frames. Each horizontal frame has at least two spaced-apart mating grooves, so that each horizontal frame is pressed and fixed to at least two vertical frames. This modular wall frame uses a plug-in pressing method to connect the vertical and horizontal frames, improving the overall assembly efficiency of the modular wall frame and providing high connection stability.

Description

Technical Field

[0001] This article relates to, but is not limited to, the field of building technology, and in particular to a composite wall frame and wall unit. Background Technology

[0002] In existing technologies, interior wall construction often involves on-site installation using lightweight metal framing and materials such as gypsum board, calcium silicate board, and wood veneer. This results in a messy construction site with excessive waste and scrap materials, making it unsuitable for the reusable and reassembled use of wall panels. Furthermore, the wall frame, which supports the entire interior wall structure, is often assembled by bolting horizontal and vertical framing members. This design leads to low on-site assembly efficiency, high labor requirements, and excessively high labor costs.

[0003] It should be noted that the above content falls within the inventor's technical knowledge and does not necessarily constitute prior art. Summary of the Invention

[0004] The purpose of this application is to provide a modular wall frame and wall unit. This modular wall frame uses a plug-in extrusion method to connect the vertical and horizontal frames that constitute the modular wall frame, improving the overall assembly efficiency of the modular wall frame, reducing assembly costs, and providing high connection stability.

[0005] The technical solution of this application embodiment is as follows:

[0006] A modular wall frame, comprising:

[0007] A vertical frame includes a main body and a first fixing part fixedly connected to the main body;

[0008] A horizontal frame is provided with a mating groove; the first fixing part is pressed into the mating groove through the opening of the mating groove, so that the vertical frame and the horizontal frame are pressed together;

[0009] The combined wall frame includes at least two spaced vertical frames and two spaced horizontal frames, with the two horizontal frames located on both sides of the vertical frames. Each horizontal frame has at least two spaced mating grooves to press and fix it to at least two vertical frames.

[0010] In some exemplary embodiments, the pressing surface of the first fixing part and the mating groove is configured as a partially arc-shaped surface.

[0011] In some exemplary embodiments, the mating groove includes:

[0012] A receiving groove, wherein the first fixing part is press-fitted with the groove wall of the receiving groove; and

[0013] The opening communicating with the receiving groove;

[0014] The opening extends away from the receiving groove to form an opening channel; the first fixing part is pressed into the receiving groove via the opening channel.

[0015] In some exemplary embodiments, the opening size of the opening channel is a constant value along its extension direction; or,

[0016] Along the extension direction of the opening channel, the opening size of the opening channel increases sequentially.

[0017] In some exemplary embodiments, the vertical frame further includes a second fixing part fixedly connected to the body, and the second fixing part and the first fixing part are disposed opposite to each other along the thickness direction of the combined wall frame; the combined wall frame includes at least two sets of the horizontal frames disposed opposite each other; two of the horizontal frames in one set are disposed on both sides of the thickness direction of the combined wall frame, one of the horizontal frames is pressed and connected to the first fixing part, and the other horizontal frame is pressed and connected to the second fixing part.

[0018] In some exemplary embodiments, the modular wall frame further includes two or more connectors, which are evenly distributed around the perimeter of the modular wall frame.

[0019] One end of one of the connectors is connected to the cross frame, and the other end is connected to another cross frame disposed opposite to the cross frame.

[0020] In some exemplary embodiments, the vertical frame is a plate and is configured as an integrally formed structure, and the first fixing part is configured as the rolled edge of the plate.

[0021] In some exemplary embodiments, the transverse frame is configured as a plate; the transverse frame includes:

[0022] First side panel;

[0023] A second side plate disposed opposite to the first side plate; and

[0024] A bottom plate is connected to the first side plate and the second side plate respectively, and the first side plate, the bottom plate and the second side plate are connected in sequence to form a U-shape;

[0025] The mating groove extends through both the first side plate and the second side plate.

[0026] In some exemplary embodiments, the vertical frame is provided with at least two spaced-apart first fixing parts; one of the two adjacent first fixing parts is press-fitted with the first side plate, and the other of the two adjacent first fixing parts is press-fitted with the second side plate.

[0027] In some exemplary embodiments, the vertical frame is provided with at least two spaced-apart first fixing parts, and the vertical frame is also provided with a clearance groove located between two adjacent first fixing parts, the clearance groove being recessed towards the center of the combined wall frame in the thickness direction relative to the two first fixing parts. A combined wall unit includes a wall panel; it also includes the combined wall frame described in any of the above embodiments;

[0028] The wall panel is fixed to the side of the horizontal frame away from the vertical frame.

[0029] After reading and understanding the accompanying diagrams and detailed descriptions, other aspects can be understood. Attached Figure Description

[0030] The accompanying drawings are provided to further understand the technical solutions in this paper and form part of the specification. They are used together with the embodiments of this application to explain the technical solutions in this paper and do not constitute a limitation on the technical solutions in this paper.

[0031] Figure 1 This is a partial top view of a combined wall unit in some illustrative embodiments of this application;

[0032] Figure 2 This is a top view of the transverse frame in some illustrative embodiments of this application;

[0033] Figure 3 This is a side sectional view of the vertical frame in some illustrative embodiments of this application;

[0034] Figure 4 This is a side sectional view of the transverse frame in some illustrative embodiments of this application.

[0035] Figure label:

[0036] 1-Wall panel;

[0037] 2-Vertical frame, 20-Body, 21-First fixing part, 22-Second fixing part, 23-Allowing groove;

[0038] 3-Horizontal frame, 30-Matching groove, 30a-Opening, 30b-Receiving groove, 30c-Opening channel, 31-First side plate, 32-Second side plate, 33-Bottom plate. Detailed Implementation

[0039] The technical solutions described herein will be further illustrated below with reference to the accompanying drawings and specific embodiments. It is understood that the specific embodiments described herein are merely for illustrative purposes and not for limiting the scope of this document.

[0040] In one embodiment of this application, as Figures 1 to 4 As shown, a modular wall unit is provided. A modular wall unit includes at least one wall panel 1. The wall panel 1 can be gypsum board, calcium silicate board, or decorative wood panel, etc. Figure 1 As shown, the technical solution is illustrated using a modular wall unit comprising two wall panels 1 as an example. A modular wall unit also includes a modular wall frame, such as... Figure 1 As shown, the modular wall frame is assembled from vertical frames 2 and horizontal frames 3. In this embodiment, three directions are defined for the explanation of the technical solution, and the first direction is labeled X, the second direction is labeled Y, and the third direction is labeled Z. The first direction, the second direction, and the third direction are all different, and in this embodiment, the first direction, the second direction, and the third direction are mutually perpendicular. The thickness direction of the modular wall unit is the second direction.

[0041] Figure 1 This is a top view of the composite wall unit in the XY plane. For example... Figure 1 As shown, two wall panels 1 are respectively arranged on both sides of the combined wall frame along the thickness direction of the combined wall unit and fixed to the combined wall frame. The fixing method can be screw connection, etc. The vertical frame 2 includes a body 20 and a first fixing part 21. The first fixing part 21 is fixed to the body 20, and the fixing method can be welding, etc. Alternatively, the vertical frame 2 is manufactured in one piece, for example, by stamping or extrusion. The material of the vertical frame 2 can be steel or aluminum alloy, etc. The horizontal frame 3 is provided with a mating groove 30. In the plane formed by XY, the outline shape of the mating groove 30 can be semi-circular, arc-shaped, semi-circular, or a combination of two shapes, etc. Figure 1 , Figure 2 As shown in the embodiment of this application, the technical solution is described by taking the example of setting the outline shape of the mating groove 30 in the plane formed by XY as a large semi-circle.

[0042] like Figure 1As shown, the first fixing part 21 on the vertical frame 2 is pressed into the mating groove 30 through the opening 30a of the mating groove 30, so that the vertical frame 2 and the horizontal frame 3 are pressed together to achieve the assembly of the modular wall frame. For example, the size of the first fixing part 21 can be designed to be larger than the size of the mating groove 30, so that the first fixing part 21 and the mating groove 30 are interference-fitted to achieve the pressing connection between the first fixing part 21 and the mating groove 30. In the actual assembly process, tooling fixtures can be used to fix the vertical frame 2. For example, the tooling fixtures clamp the two ends of the vertical frame 2 from a third direction to fix the vertical frame 2 without affecting the assembly of the horizontal frame 3. Alternatively, mounting structures (not shown in the figure) can be set at both ends of the vertical frame 2 along the third direction to fix the vertical frame 2 between the upper and lower floors, so that the horizontal frame 3 can be assembled later. Pressure can be applied to the horizontal frame 3 along the second direction, that is, the thickness direction of the modular wall frame, so that the mating groove 30 and the first fixing part 21 are pressed together. Alternatively, a downward force can be applied to the horizontal frame 3 along a third direction to press the mating groove 30 and the first fixing part 21 together. The installation direction of both the horizontal frame 3 and the vertical frame 2 is not limited here.

[0043] A modular wall frame includes at least two vertical frames 2 spaced apart along a first direction, and at least two horizontal frames 3 spaced apart along a third direction, with the horizontal frames 3 located on the same side of the vertical frames 2. A modular wall frame also includes at least two horizontal frames 3 spaced apart along a second direction, providing stable support for the wall panels to be installed. The multiple vertical frames 2 are arranged substantially parallel to each other, and the multiple horizontal frames 3 are arranged substantially parallel to each other. Figure 1 As shown, a modular wall frame may include three vertical frames 2 spaced apart along a first direction. The specific number of vertical frames 2 and horizontal frames 3 included in a modular wall frame is not limited here. The distance between two adjacent vertical frames 2 along the first direction can be a constant value, meaning that multiple vertical frames 2 can be evenly distributed along the first direction in a modular wall frame. Alternatively, multiple vertical frames 2 can be arranged at non-equidistant intervals. Along the third direction, multiple horizontal frames 3 can be arranged at equal or non-equidistant intervals. Each horizontal frame 3 has at least two mating grooves 30 along the first direction. For example, the two mating grooves 30 can be respectively provided at the two ends of the horizontal frame 3 along the first direction, so that each horizontal frame 3 is pressed and fixed onto at least two vertical frames 2 to meet the stability requirements of the structural support. Figure 1 As shown, in a modular wall frame, a horizontal frame 3 can be extruded and connected to three vertical frames 2.

[0044] In this modular wall unit, one wall panel 1 can be fixed to the horizontal frame 3, located on the side away from the vertical frame 2. A modular wall unit may only have one wall panel 1, and the side of the vertical frame 2 away from the wall panel 1 can be fixed to a load-bearing wall of the building, etc. When multiple modular wall units are assembled into a complete modular wall, the wall panel 1 in the modular wall unit closest to the ground will be supported by the ground. This reduces the requirements for the stiffness and strength of the vertical connection between the vertical frame 2 and the horizontal frame 3 in the modular wall frame, and reduces the downward gravity exerted by the wall panel 1 on the vertical frame 2, thus achieving a lightweight design for the modular wall frame.

[0045] The modular wall frame provided in this embodiment employs a compression fitting method, whereby the first fixing part 21 on the vertical frame 2 and the mating groove 30 on the horizontal frame 3 are compressionally connected to achieve compression fixation of the vertical frame 2 and the horizontal frame 3. Compared to the assembly method using screws, this method offers higher assembly efficiency and effectively reduces assembly costs. In this embodiment, the compression fitting of the first fixing part 21 and the mating groove 30 effectively increases the contact area between the vertical frame 2 and the horizontal frame 3, ensuring the stability of their fixed connection.

[0046] In some exemplary embodiments, such as Figure 1 As shown, the first fixing part 21 can be a solid protrusion or a hollow protrusion, etc. The pressing surface located on the first fixing part 21, used for pressing and engaging with the mating groove 30, can be a partially curved surface, for example, a partially spherical surface or a partially ellipsoidal surface. Setting the part of the first fixing part 21 that presses and engages with the mating groove 30 as a curved surface increases the contact area between the first fixing part 21 and the mating groove 30, and makes the mating area a three-dimensional curved surface, thereby improving the stability of the connection between the vertical frame 2 and the horizontal frame 3.

[0047] In some exemplary embodiments, such as Figure 2 As shown, the mating groove 30 also includes a receiving groove 30b. The opening 30a communicates with the receiving groove 30b. The first fixing part 21 and the groove wall constituting the receiving groove 30b are press-fitted together. Figure 2 As shown, the receiving groove 30b has a semi-circular outline shape within the XY plane. The opening 30a extends along the second direction and away from the receiving groove 30b to form an opening channel 30c. The first fixing part 21 is pressed against the receiving groove 30b via this opening channel 30c. The mating groove 30 is configured to include the connected receiving groove 30b and the opening channel 30c, and within the XY plane, the mating groove 30 is designed with a constricted shape, meaning the opening size of the opening channel 30c is smaller than the opening size of the receiving groove 30b. Figure 2As shown, the opening size of the opening channel 30c is marked as W1, and the opening size of the receiving groove 30b is marked as W2. The opening size of the receiving groove 30b is its maximum opening size. For example, if the outline of the receiving groove 30b in the plane formed by XY is designed as a rectangle, the opening size of the receiving groove 30b will be a constant value. For example, as... Figure 2 As shown, the outline of the receiving groove 30b in the plane formed by XY is designed as a large semi-circle, and the opening size of the receiving groove 30b varies along the second direction. That is, the size of the opening 30a and the opening size W1 of the opening channel 30c can be the same or different. By utilizing the constricted design of the mating groove 30, the coverage of the mating area between the mating groove 30 and the first fixing part 21 is improved, thereby enhancing the stability of the connection and fixation between the two.

[0048] In some exemplary embodiments, such as Figure 2 As shown, along the extension direction of the opening channel 30c, that is, along the second direction and in the direction away from the receiving groove 30b, the opening size W1 of the opening channel 30c can be a constant value, and the size of the opening 30a is also W1. Alternatively, along the extension direction of the opening channel 30c, the opening size W1 of the opening channel 30c increases sequentially. That is, the opening size of the end of the opening channel 30c away from the receiving groove 30b is larger than the size of the opening 30a, so as to facilitate the assembly of the horizontal frame 3 onto the vertical frame 2, so that the opening channel 30c can play the role of installation guide, thereby improving the assembly efficiency of both the horizontal frame 3 and the vertical frame 2 and reducing the overall assembly cost of the product.

[0049] In some exemplary embodiments, such as Figure 1 , Figure 3As shown, the vertical frame 2 also includes a second fixing part 22. The second fixing part 22 is fixedly connected to the body 20, and the fixing method can be welding or the like. The second fixing part 22 can be designed to be the same as or different from the first fixing part 21. The second fixing part 22 and the first fixing part 21 can be arranged opposite each other along the thickness direction of the combined wall frame, that is, the second direction. Alternatively, along the third direction, the first fixing part 21 and the second fixing part 22 can be staggered. The body 20, the first fixing part 21, and the second fixing part 22 can be manufactured as a single piece, for example, by stamping or extrusion. A combined wall frame along the second direction, that is, the thickness direction of the combined wall frame, can include at least two horizontal frames 3. When the second fixing part 22 and the first fixing part 21 are designed differently, the two horizontal frames are also designed differently accordingly. In this embodiment, the example is that the second fixing part 22 and the first fixing part 21 are designed to be the same. Two horizontal frames 3 are respectively disposed on both sides of the thickness direction of the composite wall frame. One horizontal frame 3 is press-fitted to the first fixing part 21, and the other horizontal frame 3 is press-fitted to the second fixing part 22. Using at least two opposing horizontal frames 3, the two wall panels 1 can be fixedly connected, increasing the diversity and adjustment flexibility of the composite wall unit and improving the product's market competitiveness. Those skilled in the art should know that for a wall panel 1 and a composite wall frame, two or more horizontal frames 3 can be disposed along a third direction. These two or more horizontal frames 3 are spaced apart along the third direction (Z), providing sufficient support area for the wall panel 1 to ensure the stability of the wall panel 1 and the composite wall unit structure.

[0050] In some exemplary embodiments, such as Figure 1 As shown, the distance between the two horizontal frame members 3 positioned opposite each other along the second direction is denoted as W. The value of W can be set to zero or greater than zero. Depending on the actual application scenario, the thickness of the modular wall frame can be adjusted by adjusting the value of W.

[0051] In some exemplary embodiments, such as Figure 3 As shown, the vertical frame 2 can be designed as a plate and configured as a one-piece structure, with the first fixing part 21 serving as the rolled edge of the plate. The second fixing part 22 can also serve as the rolled edge of the plate, and both rolled edges can be obtained through a single stamping process. Designing the rolled edge as the first fixing part 21 reduces the manufacturing difficulty of the first fixing part 21 and allows for a hollow first fixing part 21, which helps reduce the overall weight of the vertical frame 2, thus facilitating the lightweight design of the overall product.

[0052] In some exemplary embodiments, such as Figure 1 , Figure 4As shown, the horizontal frame 3 can be configured as a plate. The horizontal frame 3 includes a first side plate 31, a bottom plate 33, and a second side plate 32 connected in sequence. Within the plane formed by Y and Z, as... Figure 4 As shown, the cross-section of the horizontal frame 3 can be U-shaped. The space formed by the U-shape can be used to accommodate wire harnesses, improving the overall space utilization of the product and making the overall integration of the modular wall frame higher. The first side plate 31 and the second side plate 32 are arranged opposite each other, and one end of the bottom plate 33 is connected to the first side plate 31, and the other end is connected to the second side plate 32. The horizontal frame 3 can be obtained by integral molding, such as stamping or extrusion. The mating groove 30 runs along a third direction, penetrating the first side plate 31 and the second side plate 32. Setting the horizontal frame 3 as a plate reduces its weight. The first side plate 31, the bottom plate 33, and the second side plate 32 form a U-shape. After the horizontal frame 3 and the vertical frame 2 are assembled, the first side plate 31, the bottom plate 33, the second side plate 32, and the vertical frame 2 form a closed load-bearing structure, giving the modular wall frame higher mechanical properties, such as bending strength. Reinforcing ribs, such as triangular or long strip ribs, can be provided on the surfaces of the first side plate 31, the bottom plate 33, and the second side plate 32 to improve the rigidity and strength of the horizontal frame 3. Reinforcing ribs can also be provided on the surfaces of the vertical frame 2. Depending on the actual application scenario, such as prefabricated walls used in daily life or model houses, the materials and thicknesses of the vertical frame 2 and the horizontal frame 3, as well as the number of extrusion connection points within a single modular wall frame, can be adaptively adjusted according to the actual application scenario.

[0053] In some exemplary embodiments, a mating groove 30 is located on a horizontal frame 3 and press-fits with a vertical frame 2. The mating groove 30 extends along a second direction from a first side plate 31 to a bottom plate 33, and from a second side plate 32 to a bottom plate 33. After the vertical frame 2 and the horizontal frame 3 are assembled in place, the vertical frame 2 can abut against the bottom plate 33 along the second direction. In the state where the vertical frame 2 abuts against the bottom plate 33, the distance W between the two relatively arranged horizontal frames 3 can be set to zero or greater than zero.

[0054] In some exemplary embodiments, the modular wall frame further includes two or more connectors. The connectors can be slender rods or slender plates, etc. Two or more connectors are arranged around the perimeter of the modular wall frame, for example, at both ends along a first direction or at both ends along a third direction. One end of the connector is connected to a horizontal frame 3, and the other end of the connector is connected to another horizontal frame 3, wherein the horizontal frame 3 and the other horizontal frame 3 are arranged opposite each other along a second direction. The connection method between the connector and the horizontal frame 3 can be hooking, etc. For example, a hook hole (not shown in the figure) can be provided on the horizontal frame 3, and hooks (not shown in the figure) can be provided at both ends of the connector. The hooks are hooked into the hook holes to achieve the connection between the connector and the horizontal frame 3, thus achieving the connection between the two horizontal frames 3. The hook hole can be provided on the first side plate 31 or the second side plate 32, etc. The length of the connector can be designed to be slightly shorter than the distance between the two hook holes, so that after the connector hooks with the two horizontal frames 3, it will form a tightening effect on the horizontal joists, making the connection between the horizontal frame 3 and the vertical frame 2 more secure.

[0055] In some exemplary embodiments, such as Figure 3 As shown, the vertical frame 2 can be designed differently. Along the third direction (Z), the vertical frame 2 has at least two spaced-apart first fixing parts 21. One of the two adjacent first fixing parts 21 is press-fitted with the first side plate 31, and the other of the two adjacent first fixing parts 21 is press-fitted with the second side plate 32. In the area where the first side plate 31, the bottom plate 33, and the second side plate 32 form a U-shaped space, the vertical frame 2 can be designed to reduce weight. That is, in the area where the vertical frame 2 cooperates with a horizontal frame 3, along the third direction, the vertical frame 2 is not designed with a uniform cross-section. Along the third direction, the cross-sectional shape of the vertical frame 2 in the XY plane varies. By using the variable cross-section design, the stiffness and strength of the vertical frame 2 can be improved, and its weight can be reduced, thereby optimizing the overall structural design.

[0056] In some exemplary embodiments, such as Figure 3As shown, a vertical frame 2 has at least two spaced first fixing parts 21 along a third direction. The vertical frame 2 also has a clearance groove 23 located between two adjacent first fixing parts 21. The two first fixing parts 21 and the clearance groove 23 can form a U-shape, which can be obtained through a one-time molding process. The U-shaped space can be used for wiring to achieve integrated assembly of the conduit and the vertical frame 2, improving the modular design of the product. The clearance groove 23 is recessed towards the center of the thickness direction of the combined wall frame compared to the two first fixing parts 21, that is, recessed along the second direction (Y). It can reduce the weight of the vertical frame 2 itself while providing wiring space, improving the lightweight design of the product. Alternatively, a weight-reducing hole can be provided in the middle of the vertical frame 2. Multiple weight-reducing holes of the vertical frame 2 can form a wiring space, which can reduce weight and improve the integration of the product. The side of the vertical frame 2 with the second fixing part 22 can be designed with reference to the side of the first fixing part 21. For example, a clearance groove 23 can be provided between the two second fixing parts 22, which will not be elaborated here.

[0057] In the description herein, the terms “upper,” “lower,” “one side,” “the other side,” “one end,” “the other end,” “side,” “opposite,” “four corners,” “periphery,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the structure referred to has a specific orientation, or is constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this document.

[0058] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "connection," "direct connection," "indirect connection," "fixed connection," "installation," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. The terms "installation," "connection," and "fixed connection" can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this document based on the specific circumstances.

[0059] While the embodiments disclosed herein are as described above, the content is merely for the purpose of understanding this document and is not intended to limit it. Any person skilled in the art may make any modifications and changes to the form and details of the implementation without departing from the spirit and scope disclosed herein; however, the scope of patent protection herein shall still be defined by the appended claims.

Claims

1. A modular wall frame, characterized in that, include: A vertical frame includes a main body and a first fixing part fixedly connected to the main body; A horizontal frame is provided with a mating groove; the first fixing part is pressed into the mating groove through the opening of the mating groove, so that the vertical frame and the horizontal frame are pressed together; The combined wall frame includes at least two spaced vertical frames and two spaced horizontal frames, with the two horizontal frames located on both sides of the vertical frames. Each horizontal frame has at least two spaced mating grooves to press and fix it to at least two vertical frames. The horizontal frame is configured as a plate; the horizontal frame includes: First side panel; A second side plate disposed opposite to the first side plate; and A bottom plate is connected to the first side plate and the second side plate respectively, and the first side plate, the bottom plate and the second side plate are connected in sequence to form a U-shape; The mating groove extends through the first side plate and the second side plate to form a closed force-bearing structure.

2. The combined wall frame as described in claim 1, characterized in that, The pressing surface of the first fixing part and the mating groove is set as a partially arc surface.

3. The combined wall frame as described in claim 1, characterized in that, The mating groove includes: The receiving groove, wherein the first fixing part is pressed into the groove wall of the receiving groove; and the opening communicating with the receiving groove; The opening extends away from the receiving groove to form an opening channel; the first fixing part is pressed into the receiving groove via the opening channel.

4. The combined wall frame as described in claim 3, characterized in that, Along the extending direction of the opening channel, the opening size of the opening channel is a constant value; or, Along the extension direction of the opening channel, the opening size of the opening channel increases sequentially.

5. The combined wall frame as described in any one of claims 1 to 4, characterized in that, The vertical frame further includes a second fixing part fixedly connected to the main body, and the second fixing part and the first fixing part are arranged opposite to each other along the thickness direction of the combined wall frame; the combined wall frame includes at least two sets of the horizontal frames arranged opposite to each other; two of the horizontal frames in one set are respectively arranged on both sides of the thickness direction of the combined wall frame, one of the horizontal frames is pressed and connected to the first fixing part, and the other horizontal frame is pressed and connected to the second fixing part.

6. The combined wall frame as described in claim 5, characterized in that, The combined wall frame also includes two or more connectors, which are evenly distributed around the perimeter of the combined wall frame. One end of one of the connectors is connected to the cross frame, and the other end is connected to another cross frame disposed opposite to the cross frame.

7. The combined wall frame as described in any one of claims 1 to 4, characterized in that, The vertical frame is a plate and is designed as a one-piece molded structure, and the first fixing part is the rolled edge of the plate.

8. The combined wall frame as described in any one of claims 1 to 4, characterized in that, The vertical frame is provided with at least two spaced-apart first fixing parts; one of the two adjacent first fixing parts is pressed into the first side plate, and the other of the two adjacent first fixing parts is pressed into the second side plate.

9. The combined wall frame as described in any one of claims 1 to 4, characterized in that, The vertical frame is provided with at least two spaced-apart first fixing parts, and the vertical frame is also provided with a clearance groove located between two adjacent first fixing parts, the clearance groove being recessed towards the center of the thickness direction of the combined wall frame compared to the two first fixing parts.

10. A modular wall unit, comprising wall panels; characterized in that, It also includes the combined wall frame as described in any one of claims 1 to 9; The wall panel is fixed to the side of the horizontal frame away from the vertical frame.

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