A door leaf

Abstract

This utility model relates to a door leaf, including a door leaf base plate and a door leaf cover plate. The door leaf base plate includes a base plate body, a left side plate, a right side plate, a first plate portion extending to the left from the front edge of the left side plate, a second plate portion extending obliquely to the left front from the front edge of the right side plate, a third plate portion extending forward from the left edge of the second plate portion, and a fourth plate portion extending obliquely to the right rear from the front edge of the third plate portion. The door leaf cover plate includes a cover plate body, a fifth plate portion extending rearward from the right edge of the cover plate body, and a sixth plate portion extending to the left from the rear edge of the fifth plate portion. The right edge of the door leaf cover plate is fixedly connected to the first plate portion by a first edge-sealing structure. The fifth plate portion is inserted to the left between the second and fourth plate portions, and the fourth plate portion is inserted to the right between the sixth plate portion and the cover plate body. This utility model adopts a high-strength sheet metal connection structure without snap-fit ​​edges and without welding on the hinge side of the door leaf, which ensures a firm connection while meeting the installation requirements of a flat hinge.

Description

Technical Field

[0001] This utility model relates to the field of door technology, specifically to a door. Background Technology

[0002] In the existing technology, the bottom plate and the front panel of the door are usually fixed together by means of snap-fit ​​structure, welding or screw fastening. The cavity enclosed by the bottom plate and the front panel is usually provided with a frame and a core plate.

[0003] The existing door panels may have the following technical problems:

[0004] Some door panels have a snap-fit ​​structure for fixing the bottom plate and the front panel. This snap-fit ​​structure forms a snap-fit ​​edge on the hinge side of the door panel, which protrudes from the side of the hinge side. This places certain requirements on the gap between the side of the hinge side and the door frame, and requires high installation standards for the door panel. Furthermore, during the opening and closing of the door, the snap-fit ​​edge on the hinge side may interfere with and rub against the door frame, affecting the normal opening and closing of the door panel.

[0005] To eliminate the snapping on the hinge side of the door leaf, some door leaves are fixed to the base plate and the front panel by welding or screws on the hinge side. However, the welding process is prone to local deformation of the door leaf and corrosion at the weld points. Screw connections require additional fasteners and screw assembly steps, which increases production costs and assembly complexity.

[0006] Some door panels use a snap-fit ​​connection between the base plate and the panel to avoid the problems associated with welding and fastener connections. However, the connection strength of the snap-fit ​​is insufficient, which may lead to product quality issues, higher after-sales costs, and negative impact on the brand's reputation. Utility Model Content

[0007] The purpose of this utility model is to provide a door leaf that can alleviate or eliminate at least one of the aforementioned technical problems.

[0008] The door leaf of this utility model includes a door leaf base plate and a door leaf cover plate;

[0009] The door panel base plate includes a base plate body, a left side plate extending forward from the left edge of the base plate body, a right side plate extending forward from the right edge of the base plate body, a first plate portion extending to the left from the front edge of the left side plate, a second plate portion extending obliquely to the left front from the front edge of the right side plate, a third plate portion extending forward from the left edge of the second plate portion, and a fourth plate portion extending obliquely to the right rear from the front edge of the third plate portion.

[0010] The door cover plate includes a cover plate body, a fifth plate portion extending rearward from the right edge of the cover plate body, and a sixth plate portion extending leftward from the rear edge of the fifth plate portion.

[0011] The left edge of the door cover is fixedly connected to the first plate part through the first edge-sealing structure;

[0012] The fifth plate is inserted to the left into the space between the second plate and the fourth plate, and the fourth plate is inserted to the right into the space between the sixth plate and the cover plate body. The left part of the second plate abuts against the left edge of the fifth plate forward and to the right, the right edge of the fourth plate abuts against the fifth plate backward, and the left edge of the fourth plate or the front edge of the third plate abuts against the cover plate body forward.

[0013] Optionally, the right side wall provides at least a portion of the force to the second plate portion, causing the second plate portion to press against the left edge of the fifth plate portion forward and to the right.

[0014] Optionally, the third plate portion is an arc-shaped plate portion that arches to the left in the middle relative to the front and rear portions.

[0015] Optionally, the first edge-sealing structure includes a seventh plate portion disposed along the left edge of the door panel and an eighth plate portion folded from the left side of the seventh plate portion to the rear side of the seventh plate portion, with the first plate portion sandwiched between the seventh plate portion and the eighth plate portion.

[0016] Optionally, the door leaf base plate further includes an upper side plate extending forward from the upper edge of the base plate body and a ninth plate extending upward from the front edge of the upper side plate, wherein the upper edge of the door leaf cover plate and the ninth plate are fixedly connected by a second edge-sealing structure.

[0017] Optionally, the door leaf base plate is a one-piece steel component.

[0018] Optionally, a door cavity is formed between the door leaf base plate and the door leaf cover plate, and fireproof filler is provided inside the door leaf cavity.

[0019] This utility model optimizes the fixed connection structure of the door leaf base plate and the door leaf cover plate. It adopts a high-strength sheet metal connection structure without snap edges and without welding on the hinge side of the door leaf. While ensuring a firm connection, it can meet the installation requirements of the flat hinge and reduce the possibility of interference and friction between the hinge side of the door leaf and the door frame. A snap edge is formed on the lock side of the door leaf to ensure the fire resistance performance of the door leaf. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the door leaf base plate described in some embodiments;

[0021] Figure 2 for Figure 1 A magnified view of a portion of the document;

[0022] Figure 3 This is a cross-sectional view of the door leaf described in some embodiments;

[0023] Figure 4 for Figure 3 A magnified view of a portion of the document;

[0024] Figure 5 This is a schematic diagram of the connection structure described in some embodiments.

[0025] In the diagram, 1—door leaf bottom plate, 2—door leaf cover plate.

[0026] 11—Base plate body; 12—Left side plate; 13—First plate section; 14—Right side plate; 15—First connecting part; 121—Recess; 151—Second plate section; 152—Third plate section; 153—Fourth plate section; 154—First slot.

[0027] 21—Cover plate body, 22—Step section, 23—Edge section, 24—Second connecting section, 231—Seventh plate section, 232—Eighth plate section, 241—Fifth plate section, 242—Sixth plate section. Detailed Implementation

[0028] The embodiments of this utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be understood that the preferred embodiments are only for illustrating this utility model and not for limiting the scope of protection of this utility model.

[0029] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The illustrations only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0030] like Figures 1 to 5The illustrated door leaf includes a door leaf base plate 1 and a door leaf cover plate 2. The door leaf base plate 1 includes a base plate body 11, a left side plate 12 extending forward from the left edge of the base plate body 11, a right side plate 14 extending forward from the right edge of the base plate body 11, a first plate portion 13 extending to the left from the front edge of the left side plate 12, a second plate portion 151 extending obliquely to the left front from the front edge of the right side plate 14, a third plate portion 152 extending forward from the left edge of the second plate portion 151, and a fourth plate portion 153 extending obliquely to the right rear from the front edge of the third plate portion 152. The second plate portion 151, the third plate portion 152, and the fourth plate portion 153 form a first slot 154. The door leaf cover plate 2 includes a cover plate body 21, a fifth plate portion 241 extending rearward from the right edge of the cover plate body 21, and a fourth plate portion 241 extending to the right rear. The sixth plate 242 extends to the left from the rear edge of the fifth plate 241. The right edge of the cover body 21, the fifth plate 241, and the sixth plate 242 form a second slot. The left edge of the door cover 2 is fixedly connected to the first plate 13 by a first edging structure. The fifth plate 241 is inserted to the left into the first slot 154 between the second plate 151 and the fourth plate 153. The fourth plate 153 is inserted to the right into the second slot between the sixth plate 242 and the cover body 21. The left part of the second plate 151 presses against the left edge of the fifth plate 241 forward and to the right. The right edge of the fourth plate 153 presses against the fifth plate 241 backward. The left edge of the fourth plate 153 or the front edge of the third plate 152 presses against the right edge of the cover body 21 forward.

[0031] Using the above technical solution, the second plate 151, the third plate 152, and the fourth plate 153 constitute the first connecting part 15, and the right edge of the cover body 21, the fifth plate 241, and the sixth plate 242 constitute the second connecting part 24. By reasonably setting the tilt direction of the second plate 151 and the fourth plate 153, the left part of the second plate 151 presses against the left edge of the fifth plate 241 forward and to the right, the right edge of the fourth plate 153 presses against the fifth plate 241 backward, and the left edge of the fourth plate 153 or the front edge of the third plate 152 presses against the right edge of the cover body 21 forward, forming a multi-layered mutual pressing, thereby locking the first connecting part 15 and the second connecting part 24 together, forming a high-strength sheet metal connection structure without fasteners or welding between the door leaf bottom plate 1 and the door leaf cover plate 2. It avoids the problems associated with welding and fastener connections, and also has higher connection strength than conventional snap-fit ​​structures, which helps reduce the possibility of quality problems in door leaf products.

[0032] The first connecting part 15 and the second connecting part 24 adopt a weld-free sheet metal high-strength joint structure. The first connecting part 15 and the second connecting part 24 are firmly connected to each other through the shape and structural characteristics of the sheet metal parts themselves. No additional fasteners are required, and welding is not required, thus avoiding welding deformation and weld corrosion problems.

[0033] In the aforementioned door leaf, neither the first connecting part 15 nor the second connecting part 24 extends to the right side wall of the door leaf. This means that no snap-fit ​​edge is formed on the hinge side of the door leaf, satisfying the installation requirements of a flat hinge and reducing the possibility of interference and friction between the hinge side of the door leaf and the door frame. The door leaf hinge adopts a high-strength, edge-free, weld-free sheet metal joint design: this design makes the door leaf open and close more smoothly and naturally, reduces friction with the door frame, and extends the door's service life.

[0034] In the aforementioned door leaf, the left edge of the door leaf cover plate 2 is fixedly connected to the first plate portion 13 via a first edging structure, forming a snap-fit ​​edge on the lock side of the door leaf. This snap-fit ​​edge can cover the gap between the door leaf and the door frame, helping to enhance the door's sealing and security. In the event of a fire, it can effectively prevent the spread of fire and smoke, giving users more time to escape. Simultaneously, the snap-fit ​​edge also increases the door's anti-theft performance.

[0035] In some embodiments, the right side wall provides at least a portion of the force to the second plate portion 151, causing the second plate portion 151 to press forward and to the right against the left edge of the fifth plate portion 241. The right side wall provides a pressing assistance to the first connecting portion 15, enabling a better secure connection between the first connecting portion 15 and the second connecting portion 24. In a specific implementation, the right side wall is a sheet metal structure. By reasonably setting the initial angle between the right side wall and the base plate body 11, and by deflecting the right side wall to the left at a certain angle during the assembly process of the door leaf base plate 1 and the door leaf cover plate 2, the right side wall can provide a rightward force to the first connecting portion 15. As a specific example, when the door leaf base plate 1 and the door leaf cover plate 2 are not assembled together, the right side wall is tilted to the right relative to the base plate body 11, and the included angle between the right side wall and the base plate body 11 is between 90.5° and 91.5°. After the door leaf base plate 1 and the door leaf cover plate 2 are assembled, the included angle between the right side wall and the base plate body 11 is less than 90.5°. Ideally, the included angle between the right side wall and the base plate body 11 is 90°.

[0036] In some embodiments, the third plate portion 152 is an arc-shaped plate portion that arches to the left in the middle relative to the front and rear portions. The arc-shaped plate portion forms an arc transition, which on the one hand allows the fourth plate portion 153 to be more elastically deformable, and on the other hand, prevents obvious bulges from forming on the door leaf cover plate 2 due to the first connecting portion 15 pressing forward against the door leaf cover plate 2.

[0037] As a specific example, the first edge-sealing structure includes an edge-sealing portion 23 provided along the left edge of the door cover plate 2. The edge-sealing portion 23 includes a seventh plate portion 231 and an eighth plate portion 232 folded from the left side of the seventh plate portion 231 to the rear side of the seventh plate portion 231. The first plate portion 13 is sandwiched between the seventh plate portion 231 and the eighth plate portion 232.

[0038] In some embodiments, the door leaf base plate 1 further includes an upper side plate extending forward from the upper edge of the base plate body 11 and a ninth plate portion extending upward from the front edge of the upper side plate. The upper edge of the door leaf cover plate 2 and the ninth plate portion are fixedly connected by a second edging structure. Providing a second edging structure helps improve the fire resistance and anti-theft performance of the door leaf. The second edging structure can be implemented with reference to the first edging structure.

[0039] Furthermore, the door leaf base plate 1 also includes a lower side plate extending forward from the lower edge of the base plate body 11 and a tenth plate extending downward from the front edge of the lower side plate. The lower edge of the door leaf cover plate 2 and the tenth plate are fixedly connected by a third edge-wrapping structure.

[0040] In some embodiments, the door leaf base plate 1 is a one-piece steel component. In specific implementations, both the door leaf base plate 1 and the door leaf cover plate 2 are steel sheet metal parts, which can be formed by punching and bending.

[0041] In some embodiments, a door leaf cavity is formed between the door leaf base plate 1 and the door leaf cover plate 2, and fire-resistant filler is provided inside the door leaf cavity. The fire-resistant filler can improve the fire resistance of the door leaf.

[0042] In some embodiments, the door cover plate 2 is further provided with a step portion 22 that can improve the structural strength.

[0043] In some embodiments, a recess 121 is provided on the left side wall that is recessed to the right, the recess 121 being used to accommodate a door lock baffle.

[0044] The door leaf proposed in this application has a door leaf base plate 1 and a door leaf cover plate 2 fixedly connected on the hinge side via a first connecting part 15 and a second connecting part 24. On the lock side, the door leaf base plate 1 and the door leaf cover plate 2 are fixedly connected via a first edge-sealing structure. The upper and lower sides can also be connected via an edge-sealing structure. The edge-sealing structure ensures a firm connection between the door leaf base plate 1 and the door leaf cover plate 2, and also ensures that the first connecting part 15 and the second connecting part 24 abut against each other.

[0045] The above embodiments are merely preferred embodiments provided to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present utility model are all within the protection scope of the present utility model. In the description of this specification, the reference to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., means that a specific feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. Furthermore, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0046] In the description of this utility model, it should be understood that the terms "front", "rear", "left", "right", etc., indicate the orientation based on the coordinate system in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A door leaf, characterized in that, Including the door leaf base plate and the door leaf cover plate; The door panel base plate includes a base plate body, a left side plate extending forward from the left edge of the base plate body, a right side plate extending forward from the right edge of the base plate body, a first plate portion extending to the left from the front edge of the left side plate, a second plate portion extending obliquely to the left front from the front edge of the right side plate, a third plate portion extending forward from the left edge of the second plate portion, and a fourth plate portion extending obliquely to the right rear from the front edge of the third plate portion. The door cover plate includes a cover plate body, a fifth plate portion extending rearward from the right edge of the cover plate body, and a sixth plate portion extending leftward from the rear edge of the fifth plate portion. The left edge of the door cover is fixedly connected to the first plate part through the first edge-sealing structure; The fifth plate is inserted to the left into the space between the second plate and the fourth plate, and the fourth plate is inserted to the right into the space between the sixth plate and the cover plate body. The left part of the second plate abuts against the left edge of the fifth plate forward and to the right, the right edge of the fourth plate abuts against the fifth plate backward, and the left edge of the fourth plate or the front edge of the third plate abuts against the cover plate body forward.

2. The door leaf according to claim 1, characterized in that, The right side wall provides at least a portion of the force to the second plate portion, causing the second plate portion to press against the left edge of the fifth plate portion forward and to the right.

3. The door leaf according to claim 1, characterized in that, The third plate is an arc-shaped plate that arches to the left in the middle relative to the front and rear.

4. The door leaf according to claim 1, characterized in that, The first edge-sealing structure includes a seventh plate portion disposed along the left edge of the door panel and an eighth plate portion folded from the left side of the seventh plate portion to the rear side of the seventh plate portion, with the first plate portion sandwiched between the seventh plate portion and the eighth plate portion.

5. The door leaf according to claim 1, characterized in that, The door leaf base plate also includes an upper side plate extending forward from the upper edge of the base plate body and a ninth plate extending upward from the front edge of the upper side plate. The upper edge of the door leaf cover plate and the ninth plate are fixedly connected by a second edge-sealing structure.

6. The door leaf according to claim 1, characterized in that, The door leaf base plate is a one-piece molded steel component.

7. The door leaf according to claim 1, characterized in that, The door leaf base plate and the door leaf cover plate form a door leaf cavity, and fireproof filler is provided inside the door leaf cavity.

Images