Right-angle metal door pocket
The right-angle metal door frame designed with an elliptical concave shell and waist-shaped holes, combined with fastening screws and nuts, solves the problems of cumbersome installation and non-sealing, achieves a stable connection and simplifies installation, improves safety and sealing, and is suitable for a variety of occasions.
Patent Information
- Application Number
- CN202422680538.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-11-05
AI Technical Summary
The installation of existing right-angle metal door frames is cumbersome and not airtight. The bolt fixing method increases workload and time cost, and there is a problem of moisture and dust intrusion.
It adopts an elliptical concave shell and waist-shaped hole design, combined with a fastening screw and a fastening nut. A stable connection is achieved by matching the cover with the waist-shaped hole, and anti-slip rubber gaskets are added to the cover and fastening nut to improve sealing and anti-slip performance.
It achieves a stable and reliable connection of the door frame, simplifies the installation and disassembly process, improves sealing and safety, and is suitable for a variety of door opening sizes and shapes to meet the needs of different occasions.
Smart Images

Figure CN223317724U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of metal door frames, in particular to a right-angle metal door frame. Background Art
[0002] Widely used for both decorative and protective door frames, right-angle metal door frames are distinguished by their four right-angled corners. These door frames are typically crafted from materials like stainless steel and aluminum alloy, offering multiple advantages such as wear resistance, corrosion resistance, oxidation resistance, and ease of cleaning. Besides their widespread use in home decoration, right-angle metal door frames are also popular in public spaces such as hotels, shopping malls, and office buildings, earning them widespread acclaim for their exceptional decorative effect and practicality.
[0003] In the field of architectural decoration, right-angle metal door frames are not only fixed components of the door frame, but also a beautiful feature of the landscape. However, the currently commonly used fastening method of fastening with bolts brings some challenges. First, this fixing method makes the installation and adjustment of the door frame relatively cumbersome. Door frames of different specifications may require re-drilling, which undoubtedly increases the workload and time cost. It can also affect the installation effect due to deviations in the hole position. Secondly, the sealing of the screw hole is also an issue that cannot be ignored. The tiny gap between the bolt and the screw hole often becomes a point of entry for moisture and dust, affecting the service life and aesthetic appearance of the door frame. Utility Model Content
[0004] The main purpose of the utility model is to provide a right-angle metal door frame, which can effectively solve the problems raised in the background technology.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] A right-angle metal door frame, comprising a first door frame, a first sealing member, a second door frame, and a second sealing member, wherein the first door frame and the second door frame are perpendicular to each other and together constitute the right-angle metal door frame, the first sealing member is mounted on the inner wall of the first door frame, and the second sealing member is mounted on the inner wall of the second door frame;
[0007] The end surfaces of the first door frame and the second door frame are provided with a plurality of elliptical recessed shells, and the inner ends of the elliptical recessed shells are provided with recessed grooves, the groove walls of the recessed grooves are provided with waist-shaped holes, and the recessed grooves are provided with sealing covers, so that the first door frame or the second door frame is restricted and fixed in the building through the elliptical recessed shells;
[0008] The end face opening of the cover faces the waist-shaped hole, and the cover opening and the waist-shaped hole are inserted with a fastening screw. The fastening screw fixes the cover on the elliptical recessed shell through a fastening nut, and the inner hole of the fastening nut is an internal threaded portion.
[0009] In a further optional solution, the cross-section of the elliptical concave shell is designed to be elliptical, and the elliptical concave shell is designed as an integral whole with the first door frame or the second door frame, the elliptical concave shell is formed by stamping, and the edge of the elliptical concave shell is designed to be arc-shaped;
[0010] In a further optional solution, the waist-shaped hole is designed to be elliptical, and the waist-shaped hole is designed concentrically with the elliptical concave shell, and the cover is designed to be elliptical and fits with the elliptical concave shell;
[0011] In a further optional solution, a rubber ring is provided on the side wall of the cover, and the cover contacts the inner wall of the elliptical recessed shell, and the diameter of the opening on the end face of the cover is consistent with the diameter of the waist-shaped hole;
[0012] In a further optional solution, a plurality of the fastening nuts are sleeved on the fastening screw, and a non-slip rubber gasket is provided on the surface of the fastening nut, the cross section of the fastening screw is T-shaped, and the pitch of the external thread portion and the internal thread portion of the fastening screw is consistent;
[0013] As a further optional solution, a non-slip rubber gasket is provided between the sealing cover and the fastening nut, and a rubber sheet is bonded and connected to the surface of the sealing cover.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] This right-angle metal door frame, with its unique oval recessed shell and waist-shaped hole design, combined with high-quality accessories such as fastening screws and fastening nuts, achieves a stable and reliable connection to the building. It can easily withstand various external forces and vibrations, ensuring the stability of the door frame.
[0016] The oval recessed housing is not only aesthetically pleasing, but its elegantly curved edges enhance safety, effectively preventing injuries from sharp corners. A dedicated tool allows for quick and easy removal of the cover, allowing for the removal and installation of the fastening screws and nuts, greatly simplifying the removal and reinstallation of the door frame and facilitating future repairs and replacements.
[0017] In order to further improve the stability and safety of use, we have specially added anti-slip rubber gaskets to parts such as fastening nuts and covers. The surface of the cover is also covered with rubber sheets, which effectively increases the friction coefficient and prevents sliding during use.
[0018] This right-angle metal door frame has excellent versatility and is suitable for various door opening sizes and shapes. It can be flexibly used in homes, offices, factories and other occasions to meet diverse usage needs. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1It is a schematic diagram of the overall structure of the utility model;
[0020] Figure 2 This is a front view of the overall structure of the utility model;
[0021] Figure 3 This is a top view of the overall structure of the utility model;
[0022] Figure 4 This is an exploded view of the door frame, fastening nut and oval recessed shell of the present invention.
[0023] In the figure: 1. first door frame; 2. first sealing member; 3. second door frame; 4. second sealing member; 5. elliptical recessed shell; 6. recessed groove; 7. waist-shaped hole; 8. sealing cover; 9. fastening screw; 10. internal threaded portion; 11. fastening nut. DETAILED DESCRIPTION
[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.
[0025] like Figure 1 - Figure 4 As shown in the figure, the core components of the right-angle metal door frame mentioned in this design include a first door frame 1, a first seal 2, a second door frame 3, and a second seal 4. The first and second door frames 1 and 3 intersect at right angles, forming the entire framework of the right-angle metal door frame. The first seal 2 is cleverly mounted on the inner wall of the first door frame 1 to ensure tightness between the door and the door frame. Similarly, the second seal 4 is also mounted on the inner wall of the second door frame 3 to achieve the same sealing effect.
[0026] To enhance the stability between the doorframe and the building, we've designed multiple oval-shaped recessed shells 5 on the end faces of the first and second doorframes 1, 3. These recessed shells not only present an elegant oval shape, but also feature recessed grooves 6 within, with waist-shaped holes 7 cleverly defined in the walls. Covers 8 are placed at the openings of the grooves 6 to seal and protect them. These oval recessed shells 5 make it easy to secure the first or second doorframe 1, 3, to the building.
[0027] The design of cover 8 is equally sophisticated, with its end opening precisely aligned with waist-shaped hole 7. By inserting a fastening screw 9 into this hole and securing it with a fastening nut 11, we ensure a tight connection between cover 8 and oval recessed shell 5. Of particular note is the inner portion of fastening nut 11, referred to as internal thread 10, which perfectly matches the external thread of fastening screw 9, ensuring a secure connection.
[0028] The oval recessed housing 5 features a unique cross-section, creating an elegant oval shape. This design seamlessly blends in with the door frame, creating a visually integrated effect. Furthermore, the curved edges of the recessed housing enhance both aesthetics and safety.
[0029] The design of the waist-shaped hole 7 is equally ingenious, and it presents an elliptical design concentric with the elliptical concave shell 5. The shape of the cover 8 is perfectly adapted to the elliptical concave shell 5, ensuring that it can completely cover the notch of the concave groove 6.
[0030] In order to ensure the sealing between the cover 8 and the recessed shell, rubber rings are provided on the side walls of the cover 8. When the cover 8 contacts the inner wall of the oval recessed shell 5, these rubber rings can effectively prevent dust and moisture from entering the interior of the recessed groove 6.
[0031] The design of the fastening nut 11 takes anti-slip properties into account. Therefore, a non-slip rubber gasket is added to its surface. Furthermore, the fastening screw 9 has a T-shaped cross-section, and the pitch of its external and internal threads 10 is perfectly aligned, ensuring a stable and reliable connection.
[0032] Finally, in order to further improve the anti-slip performance of the cover 8, we added an anti-slip rubber gasket between it and the fastening nut 11. At the same time, a rubber sheet is also bonded to the surface of the cover 8 to increase its friction coefficient and prevent sliding during use.
[0033] Installation Process: Determine the installation positions of the first door frame 1 and the second door frame 3 based on the actual dimensions of the door opening, ensuring they intersect at right angles. Clear debris around the door opening to ensure a clean and tidy installation environment. Place the first door frame 1 in the desired location and use a level and vertical ruler to check that the door frames are level and vertical. Next, use a specialized tool to remove the cover 8 of the oval recessed shell 5, exposing the waist-shaped hole 7.
[0034] Insert the fastening screw 9 through the waist-shaped hole 7 into the building, ensuring it is securely connected to the internal structure. Then, mate the fastening nut 11 with the external thread of the screw and rotate it until it fits snugly against the building. Apply an appropriate amount of sealant to the inner wall of the first door frame 1, then attach the first seal 2 to the door frame, ensuring it fits tightly and seamlessly.
[0035] Following the same steps as for the first door frame (1), install the second door frame (3), ensuring it intersects at right angles with the first door frame (1). Similarly, apply sealant to the inner wall of the second door frame (3) and install the second seal (4). After installation, check the overall stability of the door frame and the integrity of the seal. If necessary, adjust the position of the nuts or screws to ensure a secure and airtight door frame.
[0036] During disassembly and assembly: Use specialized tools to gently remove the first and second seals 2, 4 from the doorframe, taking care to avoid damaging the seals and doorframe. Using a wrench or other tool, turn the fastening nut 11 counterclockwise until it is completely loosened and the screw tube is separated from the building. Gently remove the cover 8 from the oval recessed shell 5, exposing the waist-shaped hole 7. Remove the first and second doorframes 1, 3 from the door opening, taking care to avoid collisions with the wall or other objects. After disassembly, clean debris and dust from around the door opening and inspect the doorframe and accessories for integrity. Replace any damage promptly. Ensure safety during disassembly and assembly to avoid accidents. Seek professional assistance if necessary.
[0037] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used solely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. However, the terms "comprise," "include," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, the phrase "comprises a..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the elements.
[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.
Claims
1. A right-angle metal door frame, comprising a first door frame (1), a first sealing member (2), a second door frame (3) and a second sealing member (4), wherein the first door frame (1) and the second door frame (3) are perpendicular to each other and together form the right-angle metal door frame, the first sealing member (2) is mounted on the inner wall of the first door frame (1), and the second sealing member (4) is mounted on the inner wall of the second door frame (3), and is characterized in that: The end faces of the first door frame (1) and the second door frame (3) are provided with a plurality of elliptical recessed shells (5), and the inner ends of the elliptical recessed shells (5) are provided with recessed grooves (6), the groove walls of the recessed grooves (6) are provided with waist-shaped holes (7), and the notches of the recessed grooves (6) are provided with sealing covers (8), so that the first door frame (1) or the second door frame (3) is restricted and fixed in the building through the elliptical recessed shells (5); The end face opening of the sealing cover (8) faces the waist-shaped hole (7), and the sealing cover (8) opening and the waist-shaped hole (7) are inserted into a fastening screw (9). The fastening screw (9) fixes the sealing cover (8) on the elliptical recessed shell (5) through a fastening nut (11), and the inner hole of the fastening nut (11) is an internal threaded portion (10).
2. The right-angle metal door frame according to claim 1, characterized in that: The cross section of the elliptical concave shell (5) is designed to be elliptical, and the elliptical concave shell (5) is designed as an integral unit with the first door frame (1) or the second door frame (3). The elliptical concave shell (5) is formed by stamping, and the edge of the elliptical concave shell (5) is designed to be arc-shaped.
3. The right-angle metal door frame according to claim 2, characterized in that: The waist-shaped hole (7) is designed to be elliptical, and the waist-shaped hole (7) and the elliptical concave shell (5) are designed to be concentric. The cover (8) is designed to be elliptical, and is adapted to the elliptical concave shell (5).
4. The right-angle metal door frame according to claim 3, characterized in that: The side wall of the sealing cover (8) is provided with a rubber ring, and the sealing cover (8) contacts the inner wall of the elliptical recessed shell (5). The diameter of the opening on the end face of the sealing cover (8) is consistent with the diameter of the waist-shaped hole (7).
5. The right-angle metal door frame according to claim 4, characterized in that: A plurality of the fastening nuts (11) are sleeved on the fastening screw tube (9), and a non-slip rubber gasket is provided on the surface of the fastening nut (11). The cross section of the fastening screw tube (9) is designed in a "T" shape, and the pitch of the external thread portion of the fastening screw tube (9) is consistent with that of the internal thread portion (10).
6. The right-angle metal door frame according to claim 5, characterized in that: A non-slip rubber gasket is provided between the sealing cover (8) and the fastening nut (11), and a rubber sheet is bonded to the surface of the sealing cover (8).