Finished external corner component convenient for waterproof construction and external corner structure
By pre-setting prefabricated corner components to match the template, the problem of secondary repair in traditional corner waterproofing construction is solved, achieving efficient and stable arc corner forming, and improving waterproofing effect and construction efficiency.
Patent Information
- Application Number
- CN202522517134.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-27
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-11-27
AI Technical Summary
In traditional construction, waterproofing at external corners requires secondary manual repairs, increasing procedures and costs. Furthermore, right-angled external corners are prone to stress concentration, which can cause the waterproofing layer to crack.
Design a prefabricated external corner component that facilitates waterproof construction, including an arc-shaped part and a stop part, which is pre-set at the position of the steel frame to form an open receiving area, and cooperates with the template to achieve a regular and smooth arc-shaped external corner in one go.
Improve construction efficiency, reduce labor costs, optimize waterproof layer laying, avoid leakage risks, ensure tight bonding between components and walls, enhance structural stability and versatility, and simplify subsequent procedures.
Smart Images

Figure CN223937668U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, specifically to a finished external corner component and external corner structure that facilitates waterproof construction. Background Technology
[0002] External corners, as protruding corners in building walls, are widely found at exterior corners and edges of door and window openings. In traditional construction, right-angled external corners often experience cracking of the waterproofing layer due to stress concentration at the corner. Therefore, the conventional practice is to manually round off the external corner after the concrete wall is poured to improve waterproofing. However, this post-treatment method not only increases additional procedures and labor costs but also affects construction efficiency.
[0003] A search revealed attempts to round off external corners in existing technologies. For example, patent document CN205276542U discloses a rounded corner at the external corner of a wall. This solution uses a separate rounded corner component, which is then glued to the external corner after the composite wall is installed. Although this design conceptually achieves the rounding of the external corner, it essentially still falls within the scope of post-processing and secondary reinforcement. Furthermore, the application of this technical solution relies entirely on the existing right-angled structure of the pre-formed wall as the installation base, and the role of the rounded component is more inclined towards additional decoration and reinforcement. Utility Model Content
[0004] The purpose of this utility model is to solve the problems in the prior art by proposing a pre-made external corner component that is easy to waterproof. By pre-setting this external corner component at the corresponding position in the steel frame, a regular and smooth arc-shaped external corner can be formed on the wall after the concrete is poured.
[0005] To solve the above problems, this utility model provides the following technical solution:
[0006] A prefabricated corner component that facilitates waterproofing construction includes an arc-shaped portion, both ends of which are bent outwards to form a stop portion, and both stop portions are provided with corner portions. The inner sides of the stop portions and the corner portions together form an open receiving area.
[0007] As a further embodiment of this utility model, the thickness of the arc-shaped part, the stop part, and the external corner part is all set to 3mm.
[0008] As a further embodiment of this utility model, the stop portion and the external corner portion are arranged at right angles.
[0009] As a further embodiment of this utility model, the planes where the two external corners are located are arranged at right angles.
[0010] As a further embodiment of this utility model, the arc-shaped part and the external corner part are an integral structure.
[0011] As a further embodiment of this utility model, the arc-shaped part is a quarter-circle arc structure.
[0012] As a further embodiment of this utility model, both stop portions are arranged radially along the arc-shaped portion.
[0013] As a further aspect of this utility model, the radius of the arc-shaped portion is 50mm.
[0014] This application also proposes a corner structure, including the above-mentioned finished corner component that facilitates waterproof construction, and a template for adapting to the open area, wherein one end and one side of the template abut against the stop and the corner, respectively.
[0015] As a further aspect of this utility model, the thickness of the template is the same as the width of the stop portion.
[0016] Compared with the prior art, the present invention has the following beneficial effects:
[0017] 1. By pre-setting this component, a regular and smooth arc-shaped external corner can be formed in one go during concrete pouring, eliminating the need for additional manual steps to increase the arc angle, improving construction efficiency and reducing labor costs. Furthermore, the one-piece arc-shaped structure optimizes the foundation for waterproofing layer laying, avoiding the leakage risk caused by stress concentration or insufficient coating at traditional right-angle external corners, thus providing a high-quality foundation for subsequent waterproofing construction.
[0018] 2. The stop and the external corner together form an open receiving area, which forms a slot-like structure, providing precise positioning and receiving space for pouring concrete or installing matching formwork, making the component installation convenient and stable, and ensuring the tightness of the connection between the component and the wall base.
[0019] 3. By limiting the stop and the external corner to a right angle, this component can be applied to most standard building scenarios and perfectly matches the vertical corner of the wall, greatly improving its versatility and engineering applicability.
[0020] 4. By limiting the planes where the two external corners are located to be right angles, the two connecting surfaces can be flush with the two adjacent walls, which not only makes the appearance after installation neat and beautiful, but more importantly, ensures the uniform transmission of force and maintains the structural stability of the building's external corners.
[0021] 5. By defining the arc-shaped part and the external corner part as an integrated structure, the weak link at the connection of the components is eliminated, so that the whole component has extremely high structural strength and integrity, and can better withstand the impact and lateral pressure during concrete pouring without being easily damaged.
[0022] 6. By limiting the arrangement of both stops along the radial direction of the arc-shaped part, the two stops act as radial support ribs, providing symmetrical and uniform support for the arc-shaped part. This ensures that the pressure of the concrete fluid is evenly transmitted and dispersed, preventing deformation or displacement of the external corner component due to uneven stress during the pouring process.
[0023] 7. By combining the finished external corner components with the appropriate template, the pre-set arc-shaped external corner mold can be completed in one go before concrete pouring, achieving seamless one-time forming with the main wall structure.
[0024] 8. By limiting the thickness of the template to be the same as the width of the stop section, the size matching ensures that after the template is removed, the edge of the stop section of the component can be flush with the final wall surface, without any misalignment or depression. This provides a perfectly flat base for subsequent plastering, decoration, or direct waterproofing construction, simplifying subsequent procedures. Attached Figure Description
[0025] The present invention will be further described below with reference to the accompanying drawings.
[0026] Figure 1 This is a schematic diagram of the external corner component of this utility model.
[0027] Figure 2 This is a three-dimensional structural diagram of the external corner component of this utility model;
[0028] Figure 3 This is a schematic diagram of the external corner structure of this utility model;
[0029] Figure 4 This is a three-dimensional structural diagram of the external corner structure of this utility model;
[0030] Figure 5 This is a schematic diagram of the external corner structure of this utility model assembled on a steel frame;
[0031] Figure 6 This is a schematic diagram of the external corner structure and the steel frame after the present invention has been formed;
[0032] Figure 7 yes Figure 6 A schematic diagram of the wall structure formed under the given conditions.
[0033] In the diagram: 1. Arc-shaped section; 2. Stop section; 3. External corner section; 4. Opening area; 5. Formwork; a. Reinforcing steel frame; b. Wall. Detailed Implementation
[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0035] like Figures 1-2 As shown, a prefabricated corner component that facilitates waterproofing construction includes an arc-shaped portion 1, both ends of which are bent outwards to form a stop portion 2. Simultaneously, two sets of stop portions 2 are each provided with a corner portion 3. The inner sides of the stop portions 2 and the corner portions 3 together form an open receiving area 4. Therefore, under the above layout design, the overall shape of the corner component is... Figure 2 As shown, the two sets of open accommodating areas 4 are arranged horizontally and vertically, respectively. It should be noted that the inner and outer sides in this section are based on the arc-shaped part 1. The side of the arc-shaped part 1 closer to its center is called the inner side, and the side of the arc-shaped part 1 farther from its center is called the outer side. Correspondingly, the side of the external corner part 3 closer to the center of the arc-shaped part 1 is called the inner side, and the side of the external corner part 3 farther from the center of the arc-shaped part 1 is called the outer side.
[0036] In subsequent use, before the concrete is poured for the reinforced steel frame a, templates 5 are respectively installed on the two sets of open receiving areas 4 of the external corner component of this application. The shape of the template 5 is adapted to the shape of the open receiving area 4. Preferably, the stop part 2 and the external corner part 3 are arranged at right angles, that is, after the rectangular template 5 is placed in the open receiving area 4, one end and one side of the template 5 abut against the stop part 2 and the external corner part 3 respectively, and the thickness of the template 5 is designed to be the same as the width of the stop part 2. The external corner structure formed here can be constructed by... Figure 3 and Figure 4 To represent it.
[0037] Next, the external corner structure is assembled onto the external corner of the steel frame a (this area is pre-rounded to fit the curved part 1), so that the curved part 1 abuts against the external corner and the two sets of templates 5 abut against one side of the steel frame a respectively. Then, fasteners are used to secure and lock the templates 5 to the side of the steel frame a, and the external corner part 3 to the steel frame a. This state can be achieved by... Figure 5 (Fasteners are not shown in the diagram) During the subsequent pouring of concrete into the reinforcing steel frame a, formwork 5 will block the concrete inside the reinforcing steel frame a to prevent overflow. After a period of time, the concrete and the reinforcing steel frame a together form wall b. Then, by releasing the fasteners, the corner structure composed of formwork 5 and the corner components can be disassembled, ultimately obtaining the structure of wall b. Figures 6-7To illustrate, the external corner of wall b is an arc shape that matches the arc shape of arc part 1.
[0038] It should be noted that under different shapes of steel frame a, the included angle between the two external corners 3 of the external corner member will also change. This application does not limit itself to this. Figure 1 and Figure 2 The plane where the two external corners 3 are located is arranged at right angles, therefore, this corresponds to Figure 5 The example shown is a right angle.
[0039] Furthermore, to improve the overall rigidity and stability of the external corner component, this application sets the arc-shaped part 1 and the external corner part 3 as an integral structure. Preferably, the integral structure uses 3mm thick Q235 cold-rolled steel plate and is treated with anti-rust treatment (it can be painted with anti-rust paint or galvanized steel plate). One embodiment is proposed below: the arc-shaped part 1 is set as a quarter-circle arc structure, and the radius of the arc-shaped part 1 is simultaneously set to 50mm. Then, both stop parts 2 are arranged radially along the arc-shaped part 1. The shape of the external corner component shown in this embodiment can be derived from... Figure 1 and Figure 2 To represent it.
[0040] Compared to the existing technology where the corner of the wall b is rounded after the concrete is poured into the steel frame a to form the wall b, this application pre-sets the corner component at the corner of the steel frame a and provides a stop 2 that matches the template 5. This allows the corner component to fit with the steel frame a before pouring. After pouring, the corner component can be directly removed to obtain an arc-shaped corner integrally formed with the wall b, and the obtained arc-shaped corner has a regular shape.
[0041] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.
Claims
1. A prefabricated external corner component that facilitates waterproof construction, characterized in that, It includes an arc-shaped part (1), both ends of which are bent outward to form a stop part (2), and both stop parts (2) are provided with a convex corner part (3). The inner sides of the stop part (2) and the convex corner part (3) together form an open receiving area (4).
2. The prefabricated external corner component that facilitates waterproof construction according to claim 1, characterized in that, The thickness of the arc-shaped part (1), the stop part (2) and the external corner part (3) is all set to 3mm.
3. A prefabricated external corner component that facilitates waterproof construction according to claim 2, characterized in that, The stop part (2) and the external corner part (3) are arranged at right angles.
4. A prefabricated external corner component that facilitates waterproof construction according to claim 3, characterized in that, The two yang corners (3) are located in a right-angled plane.
5. A prefabricated external corner component that facilitates waterproof construction according to claim 4, characterized in that, The arc-shaped part (1) and the external corner part (3) are an integral structure.
6. A prefabricated external corner component that facilitates waterproof construction according to claim 5, characterized in that, The arc-shaped part (1) is a quarter-circle arc structure.
7. A prefabricated external corner component that facilitates waterproof construction according to claim 6, characterized in that, Both stop portions (2) are arranged radially along the arc-shaped portion (1).
8. A prefabricated external corner component that facilitates waterproof construction according to claim 7, characterized in that, The radius of the arc-shaped part (1) is 50 mm.
9. A type of external corner structure, characterized in that, The invention includes a prefabricated corner component that is easy to waterproof construction as described in any one of claims 1-8, and also includes a template (5) for adapting to the open receiving area (4), wherein one end and one side of the template (5) respectively abut against the stop part (2) and the corner part (3).
10. A corner structure according to claim 9, characterized in that, The thickness of the template (5) is the same as the width of the stop (2).
Citation Information
Patent Citations
Arc turning of wall body external corner department
CN205276542U