Reinforcing structure for metal door

Abstract

The utility model discloses a reinforcing structure for a metal door, which belongs to the technical field of metal door reinforcement and is characterized in that fixing blocks are arranged at upper and lower ports of a reinforcing framework, ejection fixing rods are inserted into circular holes in the fixing blocks, ejection balls are arranged at the inner ends of the ejection fixing rods, and reset springs are sleeved on rod bodies of the ejection fixing rods and positioned between the ejection balls and the fixing blocks; and when the insertion type screw rod is inserted into the reinforcing framework, the ejection ball is extruded, so that the ejection fixing rod is inserted into an opening in the inner wall of the side frame. Through the design that the reinforcing framework in the metal door is vertically connected with the insertion type screw rod, the structural strength, stability and durability of the metal door are remarkably improved. The reinforcing process is simple and fast, and the production efficiency and the installation and maintenance convenience are improved. The design of the ejection fixing rod and the reset spring ensures tighter fixation and prevents loosening and deformation. And due to the application of the bolts, the nuts, the anti-skid gaskets and the rubber strips, the firmness, the stability and the sealing performance of connection are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of metal door reinforcement, in particular to a metal door reinforcement structure. Background Art

[0002] Metal door reinforcements are designed to significantly enhance the stability and safety of metal doors. In practice, they play a crucial role in enhancing the overall strength and safety of the door. However, bolting the reinforcement to the door frame may offer some stability differences compared to flush mounting.

[0003] Specifically, bolted connections can become loose over time, especially when subjected to vibration or impact. Furthermore, bolted connections are more susceptible to shear deformation when subjected to lateral forces than embedded connections, potentially threatening the door's structural integrity and safety.

[0004] What is more noteworthy is that if the bolted parts are not properly treated with anti-corrosion, then long-term exposure to moisture or an environment containing corrosive substances may accelerate the corrosion rate of the bolts, further weakening the stability of the connection.

[0005] Furthermore, bolted connections require regular inspection and tightening, especially when the door is subject to heavy loads or in harsh environments, which undoubtedly increases maintenance costs. Therefore, when choosing a connection method for metal door reinforcement structures, it is necessary to comprehensively consider various factors to ensure its long-term stability and safety. Utility Model Content

[0006] The main purpose of the utility model is to provide a reinforcement structure for a metal door, which can effectively solve the problems raised in the background technology.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A reinforcement structure for a metal door, comprising a front door panel, a rear door panel and side frames, wherein the front door panel and the rear door panel are respectively located at the front and rear ends of the side frames, and the front door panel, the rear door panel and the side frames are assembled into a metal door;

[0009] Two reinforcement frames are provided in the inner cavity of the front door panel, the rear door panel and the side frame, a notch is provided at the front end of each reinforcement frame, an insert screw is inserted into an opening on one side of the side frame, the insert screw is inserted into the two reinforcement frames and vertically connected thereto, and the metal door is reinforced and connected by the insert screw and the reinforcement frame;

[0010] The upper and lower ports of the reinforcement frame are provided with fixing blocks, the round hole on the fixing block is inserted with an ejection fixing rod, and the inner end of the ejection fixing rod is provided with an ejection ball, the rod body of the ejection fixing rod is provided with a reset spring and is located between the ejection ball and the fixing block to realize the reset of the ejection fixing rod, and when the inserted screw is inserted into the reinforcement frame, the ejection ball is squeezed to insert the ejection fixing rod into the opening on the inner wall of the side frame.

[0011] As a preferred embodiment of the present application, the reinforcement frame is fixed to the front door panel, rear door panel and side frame by bolts, nuts and anti-slip gaskets, and the cross-section of the reinforcement frame is designed in the shape of an "Ω", and the contact ends of the reinforcement frame with the front door panel, rear door panel and side frame are provided with rubber strips;

[0012] As a preferred embodiment of the present application, the insertable screw is divided into a screw and a bolt head, the bolt head is located at the end of the screw, the screw is inserted into the opening of the side frame and connected thereto by a thread, and the insertable screw is connected to the reinforcement frame by a thread;

[0013] As a preferred solution of the present application, the fixing block is designed as an integral unit with the reinforcement frame, and rubber gaskets are provided at the upper and lower ends of the fixing block, and the circular hole on the fixing block is directly opposite to the opening on the inner wall of the side frame;

[0014] As a preferred solution of the present application, the ejection fixing rod and the ejection ball are designed as an integrated whole, and the ejection ball is a wear-resistant ball. The upper end of the ejection fixing rod is hemispherical in design, and an anti-slip rubber gasket is bonded to the upper end of the ejection fixing rod. The upper end of the ejection fixing rod is provided with a limiting ring, which prevents the ejection fixing rod from being separated from the fixing block.

[0015] As a preferred solution of the present application, a circular ring is provided at the upper end of the reset spring, and the circular ring is sleeved on the ejection fixing rod. The lower end of the reset spring is connected to the ejection ball by a bolt.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This new design employs a strategy of installing a reinforcement frame inside the metal door and vertically connecting the reinforcement frame with inserted screws, significantly improving the overall structural strength of the metal door. This design gives the metal door greater stability and durability when subjected to external impacts.

[0018] To simplify the reinforcement connection process, we have designed a notch at the front of the reinforcement frame and used plug-in screws to make the installation process simple and quick. This not only optimizes production efficiency, but also brings convenience to subsequent installation and maintenance work.

[0019] The design of an ejector rod and return spring has been introduced. When the plug-in screw is inserted, these components automatically push the ejector rod into the opening in the inner wall of the side frame, achieving a tighter fixation. This design cleverly prevents the metal door from loosening or deforming during use.

[0020] When connecting the reinforcement frame to the front and rear door panels and side frames, we used bolts, nuts, and non-slip washers to ensure a secure and stable connection. We also installed rubber strips at the contact ends, which not only improves the sealing of the connection but also effectively blocks the intrusion of external factors such as dust and moisture.

[0021] The installation process for the entire metal door reinforcement structure is clear and easy to operate. If parts need to be disassembled or replaced, it can also be completed quickly and conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a diagram showing the side frame, reinforcement frame and insert screw of the utility model;

[0024] Figure 3 This is a front view of the side frame, reinforcement frame and inserting screw of the utility model;

[0025] Figure 4 for Figure 2 Enlarged schematic diagram of point A in the middle.

[0026] In the figure: 1. Front door panel; 2. Rear door panel; 3. Side frame; 4. Reinforcement frame; 5. Insert screw; 6. Notch; 7. Fixing block; 8. Ejector fixing rod; 9. Ejector ball; 10. Return spring. DETAILED DESCRIPTION

[0027] 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.

[0028] like Figure 1 - Figure 4 As shown in the figure, the metal door reinforcement structure we introduced is mainly composed of three core components: the front door panel 1, the rear door panel 2, and the side frame 3. The front door panel 1 and the rear door panel 2 are respectively installed at the front and rear ends of the side frame 3. The three components work closely together to form the main structure of the metal door.

[0029] To enhance the overall strength and stability of the metal door, two reinforcement frames 4 are installed within the interior spaces of the front door panel 1, rear door panel 2, and side frames 3. These two reinforcement frames 4 are uniquely designed, with a notch 6 at the front end, facilitating subsequent reinforcement connections.

[0030] An opening is created on one side of the side frame 3 and an insert screw 5 is inserted. This screw not only passes through the two reinforcement frames 4 but also connects them perpendicularly, forming a stable reinforcement connection point. This design significantly strengthens the overall structure of the metal door.

[0031] Fixing blocks 7 are mounted at the top and bottom ends of the reinforcement frame 4. Block 7 has a circular hole through which an ejector rod 8 is inserted. A ball 9 is mounted on the inner end of the rod, while a return spring 10 is sleeved around the rod, located between the ball 9 and the fixing block 7. When the inserted screw 5 is inserted into the reinforcement frame 4, it compresses the ball 9, pushing the ejector rod 8 into the inner wall opening of the side frame 3, achieving a tighter fixation.

[0032] Bolts, nuts, and non-slip washers connect the reinforcement frame 4 to the front door panel 1, rear door panel 2, and side frame 3, ensuring a secure and stable connection. The reinforcement frame 4's "Ω"-shaped cross-section is particularly noteworthy, not only aesthetically pleasing but also enhancing its structural strength. Rubber strips are also installed at the contact points between the reinforcement frame 4, the front door panel 1, rear door panel 2, and side frame 3, further enhancing the seal and stability of the connection.

[0033] The inserted screw 5 is composed of a screw and a bolt head, wherein the bolt head is located at the end of the screw. The screw is inserted into the opening of the side frame 3 and connected thereto through a thread. At the same time, it is also connected to the reinforcement frame 4 through a thread, ensuring the tightness and stability of the connection.

[0034] The fixing block 7 is integrally designed with the reinforcement frame 4, and is provided with rubber gaskets at its upper and lower ends to increase friction with the other parts of the metal door. At the same time, the circular hole in the fixing block 7 corresponds exactly to the inner wall opening of the side frame 3, allowing the ejection fixing rod 8 to be smoothly inserted.

[0035] The ejector rod 8 and ejector ball 9 are integrally designed, and the ejector ball 9 is made of a wear-resistant material. The upper end of the ejector rod 8 is hemispherical and bonded with a non-slip rubber gasket, enhancing safety. Furthermore, a retaining ring is mounted on the rod to prevent accidental detachment of the ejector rod 8 from the fixing block 7.

[0036] The upper end of the return spring 10 is provided with a ring, which is sleeved on the ejection fixing rod 8, and the lower end is connected to the ejection ball 9 by a bolt. Such a design enables the return spring 10 to smoothly reset the ejection fixing rod 8 to its initial position.

[0037] To install the metal door reinforcement structure: Prepare the front door panel 1, rear door panel 2, side frames 3, and two reinforcement frames 4. Check that the insert screws 5 (including the screws and bolt heads), fixing blocks 7, ejector rods 8, ejector balls 9, and return springs 10 are all present and intact.

[0038] Install the front door panel 1 and rear door panel 2 at the front and rear ends of the side frame 3, ensuring a tight fit with no gaps. Place two reinforcement frames 4 in the space between the front and rear door panels 1 and 2 and the side frame 3, respectively. Ensure that the notches 6 of the reinforcement frames 4 face the direction of the openings in the side frame 3.

[0039] Insert the screw portion of the insert screw 5 through the opening of the side frame 3, ensuring that the screw passes through the notches 6 of the two reinforcement frames 4. Rotate the screw until it is tightly connected to both the side frame 3 and the reinforcement frame 4 through threads.

[0040] Align the circular holes on the fixing block 7 with the inner wall openings of the side frame 3, and install the fixing block 7 to the upper and lower ends of the reinforcement frame 4. Insert the ejection fixing rod 8 into the circular holes of the fixing block 7 to ensure that the ejection ball 9 can smoothly enter the inner wall openings of the side frame 3.

[0041] The upper end ring of the reset spring 10 is placed on the ejection fixing rod 8, and the lower end is connected to the ejection ball 9 by a bolt. Make sure that the reset spring 10 is in a natural state without excessive stretching or compression.

[0042] Check that all components are securely installed and not loose. Gently press the ejector rod 8 and confirm that the return spring 10 can smoothly return it to its initial position. Use bolts, nuts, and non-slip washers to secure the reinforcement frame 4 to the front door panel 1, rear door panel 2, and side frame 3, ensuring a secure and stable connection.

[0043] The entire reinforcement structure is inspected and accepted to ensure it meets the design requirements and usage needs. If necessary, local adjustments can be made until the optimal state is achieved.

[0044] 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.

[0045] 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 reinforcement structure for a metal door, comprising a front door panel (1), a rear door panel (2) and a side frame (3), wherein the front door panel (1) and the rear door panel (2) are respectively located at the front and rear ends of the side frame (3), and the front door panel (1), the rear door panel (2) and the side frame (3) are assembled into a metal door, characterized in that: Two reinforcement frames (4) are provided in the inner cavities of the front door panel (1), the rear door panel (2) and the side frame (3); a notch (6) is provided at the front end of each reinforcement frame (4); an insert screw (5) is inserted into an opening on one side of the side frame (3); the insert screw (5) is inserted into the two reinforcement frames (4) and vertically connected thereto; and a metal door reinforcement connection is achieved through the insert screw (5) and the reinforcement frame (4); The upper and lower ends of the reinforcement frame (4) are provided with fixing blocks (7), an ejection fixing rod (8) is inserted into the circular hole on the fixing block (7), and an ejection ball (9) is provided at the inner end of the ejection fixing rod (8), a reset spring (10) is provided on the rod body of the ejection fixing rod (8) and is located between the ejection ball (9) and the fixing block (7), so as to realize the reset of the ejection fixing rod (8), and when the inserted screw rod (5) is inserted into the reinforcement frame (4), the ejection ball (9) is squeezed to insert the ejection fixing rod (8) into the inner wall opening of the side frame (3).

2. A metal door reinforcement structure according to claim 1, characterized in that: The reinforcement frame (4) is fixed to the front door panel (1), the rear door panel (2) and the side frame (3) by means of bolts, nuts and anti-slip gaskets, and the cross section of the reinforcement frame (4) is designed in an "Ω" shape. The contact ends of the reinforcement frame (4) with the front door panel (1), the rear door panel (2) and the side frame (3) are provided with rubber strips.

3. The metal door reinforcement structure according to claim 2, characterized in that: The inserted screw (5) is divided into a screw and a bolt head, the bolt head is located at the end of the screw, the screw is inserted into the opening of the side frame (3) and is connected to it through a thread, and the inserted screw (5) is connected to the reinforcement frame (4) through a thread.

4. The metal door reinforcement structure according to claim 3, characterized in that: The fixing block (7) is designed as an integral unit with the reinforcement frame (4), and rubber gaskets are provided at the upper and lower ends of the fixing block (7). The circular hole on the fixing block (7) is directly opposite to the opening on the inner wall of the side frame (3).

5. The metal door reinforcement structure according to claim 4, characterized in that: The ejection fixing rod (8) and the ejection ball (9) are designed as an integrated whole, and the ejection ball (9) is a wear-resistant ball. The upper end of the ejection fixing rod (8) is designed as a hemispherical shape. The upper end of the ejection fixing rod (8) is bonded with a non-slip rubber gasket. The upper end of the ejection fixing rod (8) is provided with a limiting ring, which prevents the ejection fixing rod (8) from being separated from the fixing block (7).

6. The metal door reinforcement structure according to claim 5, characterized in that: The upper end of the reset spring (10) is provided with a circular ring, which is sleeved on the ejection fixing rod (8), and the lower end of the reset spring (10) is connected to the ejection ball (9) via a bolt.

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