Metal door convenient to install

By combining a shaft, lead screw, and roller, the instability caused by support errors during metal door installation is solved, achieving stable support and reducing friction, thus improving installation reliability and service life.

CN223510785UActive Publication Date: 2025-11-04NINGBO CHANGRUI NEW MATERIALS CO LTD
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Patent Information

Application Number
CN202422833313.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-20
Publication Date
2025-11-04
Estimated Expiration
2034-11-20

AI Technical Summary

Technical Problem

During the installation of existing metal doors, errors can easily occur between the support base and the hanging lug, causing some support bases to bear excessive weight, potentially deforming and affecting installation stability and service life.

Method used

It adopts a combination structure of rotating shaft, lead screw, support plate and roller. The lead screw drives the rotating shaft to move, which drives the support plate and roller to change position. This ensures that the roller is in close contact with the lug, provides balanced support force, reduces friction and improves stability.

Benefits of technology

It achieves stable installation of metal doors, reduces frictional resistance, improves the stability and service life of the support, and avoids overload deformation of the support base.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a metal door convenient to install, and relates to the technical field of metal door installation, the metal door convenient to install comprises a metal door body and an installation plate, one side of the metal door body is provided with a hanging lug, one side of the installation plate is connected with a supporting sleeve, the inner wall of the hanging lug is rotatably connected with the outer surface of a rotating shaft, and the rotating shaft is connected with the supporting sleeve. According to the metal door convenient to install, through cooperation of the rotating shaft, the lead screw, the supporting disc and the rolling wheels, pushing force is generated by rotating the lead screw, power is provided for the moving position of the rotating shaft, and the metal door is convenient to install; when the rotating shaft moves, the supporting disc and the rolling wheel are driven to change the positions, the contact distance between the rolling wheel and the hanging lug is changed, the rolling wheel makes tight contact with the hanging lug, the hanging lug is supported, supporting force balance is achieved, and the supporting stability of the metal door body is improved.
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Description

Technical Field

[0001] This utility model relates to a metal door, specifically a metal door that is easy to install, and belongs to the field of metal door installation technology. Background Technology

[0002] Metal doors are doors made of metal, typically steel, aluminum alloys, and copper. They offer good sturdiness, security, and anti-theft performance, and are widely used in residential homes, commercial properties, and factories.

[0003] Existing metal door installation typically requires first installing support brackets in the doorway using expansion bolts, then fitting the door's lugs onto the pivots of the support brackets for support. While this structure provides a secure installation, a single metal door generally requires two to three support brackets. Since the support brackets are connected to the building structure by drilling holes and using expansion bolts, misalignment may occur between the support brackets and the lugs after installation. Some lugs may contact the support brackets after fitting onto the pivots, while others may not, resulting in the lugs not receiving sufficient support. Consequently, the entire weight of the metal door relies on only one or two support brackets, increasing the load on some of them and potentially causing deformation of the heavier support brackets over time. Therefore, we offer a metal door design that is easier to install and solves these problems. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides an easy-to-install metal door, the specific technical solution of which is as follows:

[0005] An easy-to-install metal door includes a metal door body and a mounting plate. A hanging lug is installed on one side of the metal door body. A support sleeve is connected to one side of the mounting plate. A pivot is in contact with the inner wall of the support sleeve. The inner wall of the hanging lug is rotatably connected to the outer surface of the pivot. A support plate is connected to the outer surface of the pivot and is located below the hanging lug. A roller is rotatably connected to the inner wall of the support plate. The outer surface of the roller is in contact with the lower surface of the hanging lug. A lead screw is threadedly connected to the inner wall of the support sleeve. One end of the lead screw inside the support sleeve is in contact with the end of the pivot inside the support sleeve.

[0006] Preferably, the number of rollers is multiple, and the multiple rollers are arranged in a circular array.

[0007] Preferably, the inner wall of the support sleeve is provided with multiple slides in a circular array, and the outer surface of the rotating shaft is connected with guide rails of the same number as the slides, and the outer surface of the guide rails is slidably connected to the inner wall of the slides.

[0008] Preferably, a first chuck is connected to the outer surface of the lead screw, and a second chuck is in contact with the outer surface of the first chuck.

[0009] Preferably, the outer surface of the chuck two is connected to two bases one, and the two bases one are symmetrical. The outer surface of the support sleeve is connected to two bases two, and the two bases two are symmetrical. The inner walls of the two bases two are slidably connected to guide rods. One end of each guide rod is connected to the upper surface of the two bases one, and the end of each guide rod away from the base one is connected to a limit block.

[0010] Preferably, a spring is sleeved on the outside of both guide rods, one end of the spring is connected to the lower surface of the second base, and the other end of the spring is connected to the upper surface of the first base.

[0011] Preferably, the mounting plate has multiple connection holes on its inner side, and the multiple connection holes are located at the four corners of the mounting plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This easy-to-install metal door utilizes the cooperation between a pivot, lead screw, support plate, and rollers. Rotating the lead screw generates a driving force, which powers the pivot to move. Simultaneously, the pivot moves, causing the support plate and rollers to change position, altering the contact distance between the rollers and the hanging ears. This ensures the rollers are in tight contact with the hanging ears, providing support and achieving a balance of support forces, thus improving the stability of the metal door body.

[0014] 2. This easy-to-install metal door uses the cooperation between rollers and support plate. The support plate maintains the stability of the rollers during rotation. The rollers have a rotation function. By contacting the hanging ears, the friction on the hanging ears is reduced, and the resistance of the metal door body during rotation is also reduced. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the support sleeve in this utility model;

[0018] Figure 4 This is a cross-sectional view of the support sleeve structure in this utility model;

[0019] Figure 5 This is a schematic diagram of the overall three-dimensional structure of the rotating shaft in this utility model.

[0020] Attached diagram descriptions: 1. Metal door body; 2. Mounting plate; 3. Hanging lug; 4. Support sleeve; 5. Spindle; 6. Support plate; 7. Roller; 8. Lead screw; 9. Slide rail; 10. Guide rail; 11. Chuck 1; 12. Chuck 2; 13. Base 2; 14. Guide rod; 15. Limiting block; 16. Spring; 17. Connecting hole; 18. Base 1. Detailed Implementation

[0021] The present invention will now be further described with reference to the accompanying drawings.

[0022] Please see Figures 1-5 An easy-to-install metal door includes a metal door body 1 and a mounting plate 2. A hanging ear 3 is installed on one side of the metal door body 1. The metal door body 1 receives the supporting force of the pivot 5 through the hanging ear 3. A support sleeve 4 is connected to one side of the mounting plate 2. The inner wall of the support sleeve 4 contacts the pivot 5. The support sleeve 4 provides support force to the pivot 5 and maintains the stability of the pivot 5.

[0023] The inner wall of the lug 3 is rotatably connected to the outer surface of the rotating shaft 5. The outer surface of the rotating shaft 5 is connected to a support plate 6, and the support plate 6 is located below the lug 3. The inner wall of the support plate 6 is rotatably connected to a roller 7. The outer surface of the roller 7 is in contact with the lower surface of the lug 3. There are multiple rollers 7, and the multiple rollers 7 are arranged in a circular array. The support plate 6 contacts the lug 3 through the rollers 7, which reduces the friction between the lug 3 and the support plate 6, and facilitates the rotation of the lug 3.

[0024] The inner wall of the support sleeve 4 is threaded with a lead screw 8. One end of the lead screw 8 inside the support sleeve 4 is in contact with the other end of the rotating shaft 5 inside the support sleeve 4. Rotating the lead screw 8 generates a pushing force, which pushes the rotating shaft 5 to move. At the same time, the rotating shaft 5 moves, causing the support plate 6 and the roller 7 to move simultaneously.

[0025] The inner wall of the support sleeve 4 is provided with multiple slides 9, and the multiple slides 9 are arranged in a circular array. The outer surface of the rotating shaft 5 is connected with the same number of guide rails 10 as the slides 9. The outer surface of the guide rails 10 is slidably connected to the inner wall of the slides 9. The slides 9 wrap around the guide rails 10, so that the guide rails 10 can only move up and down under the guidance of the slides 9, preventing the rotating shaft 5 from rotating.

[0026] The outer surface of the lead screw 8 is connected to a chuck 11, and the outer surface of the chuck 11 is in contact with a chuck 2 12. The teeth on the chuck 11 and the chuck 2 12 are in staggered contact with each other, forming a mutual restriction and obstruction. The mutual contact between the chuck 11 and the chuck 2 12 restricts the rotation of the lead screw 8, preventing the lead screw 8 from moving after rotation and losing its support position on the rotating shaft 5, thereby changing the position of the support plate 6 and improving the stability of the lead screw 8 when supporting the rotating shaft 5.

[0027] The outer surface of the chuck 12 is connected to two bases 18, which are symmetrical. The outer surface of the support sleeve 4 is connected to two bases 13, which are symmetrical. The inner walls of the two bases 13 are slidably connected to guide rods 14. One end of each guide rod 14 is connected to the upper surface of the two bases 18. The end of each guide rod 14 away from the bases 18 is connected to a limit block 15. The bases 13 maintain the stability of the guide rods 14 when they move, and the limit block 15 prevents the guide rods 14 from disengaging from the bases 13.

[0028] Springs 16 are fitted around the outside of both guide rods 14. One end of the spring 16 is connected to the lower surface of the second base 13, and the other end of the spring 16 is connected to the upper surface of the first base 18. The elastic pushing force provided by the spring 16 pushes the second chuck 12 to contact the first chuck 11 tightly, preventing the second chuck 12 from detaching from the contact with the first chuck 11.

[0029] The mounting plate 2 has multiple connecting holes 17 on its inner side, and the multiple connecting holes 17 are located at the four corners of the mounting plate 2. Expansion bolts are passed through the connecting holes 17 to fix the mounting plate 2 to the building.

[0030] In use, the following steps are taken: First, drill holes in the building according to the opening of the connecting hole 17. Then, pass the expansion bolt through the connecting hole 17 and into the drilled hole to fix the mounting plate 2 to the building. Next, lift the metal door body 1 and align the hanging ear 3 with the rotating shaft 5. Place the hanging ear 3 on the outside of the rotating shaft 5 and check whether the roller 7 is in contact with the hanging ear 3. When the roller 7 is not in contact with the hanging ear 3, push the second chuck 12 to disengage from the first chuck 11. While pushing the second chuck 12 to move, compress the spring 16. Rotate the lead screw 8. After the lead screw 8 rotates, it pushes the rotating shaft 5 to move. After the rotating shaft 5 moves, it drives the support plate 6 to move. At the same time, the support plate 6 drives the roller 7 to move. Then, after the roller 7 contacts the hanging ear 3, stop rotating the lead screw 8. Then release the second chuck 12. The spring 16 pushes the second chuck 12 to contact the first chuck 11.

[0031] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.

Claims

1. A metal door that is easy to install, comprising a metal door body (1) and a mounting plate (2), characterized in that: A hanging ear (3) is installed on one side of the metal door body (1), and a support sleeve (4) is connected to one side of the mounting plate (2). A rotating shaft (5) is in contact with the inner wall of the support sleeve (4). The inner wall of the hanging ear (3) is rotatably connected to the outer surface of the rotating shaft (5). A support plate (6) is connected to the outer surface of the rotating shaft (5), and the support plate (6) is located below the hanging ear (3). A roller (7) is rotatably connected to the inner wall of the support plate (6). The outer surface of the roller (7) is in contact with the lower surface of the hanging ear (3). A screw rod (8) is threadedly connected to the inner wall of the support sleeve (4). One end of the screw rod (8) located inside the support sleeve (4) is in contact with one end of the rotating shaft (5) located inside the support sleeve (4).

2. The easy-to-install metal door according to claim 1, characterized in that: The number of rollers (7) is multiple, and the multiple rollers (7) are arranged in a circular array.

3. The easy-to-install metal door according to claim 1, characterized in that: The inner wall of the support sleeve (4) is provided with multiple slides (9), and the multiple slides (9) are arranged in a circular array. The outer surface of the rotating shaft (5) is connected with guide rails (10) of the same number as the slides (9). The outer surface of the guide rails (10) is slidably connected to the inner wall of the slides (9).

4. The easy-to-install metal door according to claim 1, characterized in that: The outer surface of the lead screw (8) is connected to a chuck one (11), and the outer surface of the chuck one (11) is in contact with a chuck two (12).

5. A metal door that is easy to install according to claim 4, characterized in that: The outer surface of the chuck 2 (12) is connected to two bases 1 (18), and the two bases 1 (18) are symmetrical. The outer surface of the support sleeve (4) is connected to two bases 2 (13), and the two bases 2 (13) are symmetrical. The inner walls of the two bases 2 (13) are slidably connected to guide rods (14). One end of the two guide rods (14) is connected to the upper surface of the two bases 1 (18). The end of the two guide rods (14) away from the bases 1 (18) is connected to a limit block (15).

6. A metal door that is easy to install according to claim 5, characterized in that: Both guide rods (14) are fitted with springs (16), one end of which is connected to the lower surface of the second base (13), and the other end of which is connected to the upper surface of the first base (18).

7. A metal door that is easy to install according to claim 1, characterized in that: The mounting plate (2) has multiple connection holes (17) on its inner side, and the multiple connection holes (17) are located at the four corners of the mounting plate (2).