Lightweight steel structure fabricated house

By using a combination of caps, push plates, and soft rubber on the bolts, the problems of bolt corrosion and loosening are solved, achieving both rust prevention and easy assembly/disassembly of the bolts.

CN224379143UActive Publication Date: 2026-06-19NANJING ZHONGYI ARCHITECTURAL DESIGN INST CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202521516513.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-18
Publication Date
2026-06-19
Estimated Expiration
2035-07-18

AI Technical Summary

Technical Problem

In existing steel-structure prefabricated houses, bolts are prone to corrosion when exposed to the outside environment for a long time, which makes secondary disassembly and assembly inconvenient.

Method used

It adopts a cap and soft rubber structure. The cap has a push plate and a sliding groove. The soft rubber wraps around the bolt under the action of gravity. The push plate restrains the soft rubber. The anti-loosening pin and elastic ball prevent the cap from loosening and reduce the risk of rust and loosening.

Benefits of technology

It effectively prevents bolt corrosion, improves bolt durability and ease of secondary disassembly and assembly, and reduces the risk of soft glue residue and loosening.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224379143U_ABST
    Figure CN224379143U_ABST
Patent Text Reader

Abstract

The application relates to the field of house building, in particular to a light steel structure fabricated house, which comprises two wallboards which are mutually bolted, installation holes are formed at positions opposite to the bolted positions on the wallboards, and the installation holes are screw-connected with covers. The cover can cover the bolt, so that the bolt is not directly exposed to the outside, and thus the possibility of rusting of the bolt is reduced.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This application relates to the field of housing construction, and in particular to a lightweight steel-structured prefabricated residential building. Background Technology

[0002] Prefabricated housing is a type of residential building constructed using industrialized production methods. In this construction method, all or part of the structural and interior components of the building are prefabricated in a factory and then transported to the construction site for assembly.

[0003] Existing steel-structure prefabricated houses use cold-formed thin-walled steel as the main frame, which is connected by bolts, and the walls are filled with insulation material to improve thermal insulation performance.

[0004] Bolts used for fixed installation are usually directly exposed to the outside environment and are prone to corrosion after being exposed to wind and rain for a long time, which causes great inconvenience to users for secondary disassembly and reassembly, and has obvious shortcomings. Utility Model Content

[0005] To address the problem of bolts easily corroding when exposed to the outside environment for extended periods, this application provides a lightweight steel structure prefabricated residential building.

[0006] The technical solution for a lightweight steel structure prefabricated residential building provided in this application is as follows:

[0007] A lightweight steel structure prefabricated house includes two wall panels bolted together, with mounting holes at opposite bolting positions on the wall panels, and the mounting holes are threaded with caps.

[0008] By adopting the above technical solution, the cap can cover the bolts, preventing them from being directly exposed to the outside world, thus reducing the possibility of bolt corrosion.

[0009] Optionally, the cover contains soft rubber for wrapping the bolts.

[0010] By adopting the above technical solution, when the cap is tightened, the soft rubber can wrap around the bolt under the action of gravity, thereby isolating the bolt from moisture and further reducing the possibility of bolt corrosion.

[0011] Optionally, a push plate is placed inside the cover, with a gap between the push plate and the cover. A sliding groove is formed on the inner wall of the cover along its axial direction, and the push plate extends into the sliding groove and slides in cooperation with it.

[0012] By adopting the above technical solution, before installation, the soft rubber is first kneaded into a ball and placed between the inner end face of the push plate and the cover. As the cover is gradually screwed into the mounting hole, the push plate contacts the bolt and pushes the soft rubber from the gap to be squeezed to wrap the bolt. The push plate can restrain the soft rubber and reduce the possibility of the soft rubber accidentally falling out before the cover and the mounting hole are successfully threaded together.

[0013] Optionally, when the cover is fully tightened with the mounting hole, there is a gap between the side of the push plate facing away from the bolt and the inner wall of the cover.

[0014] By adopting the above technical solution, the soft adhesive on both sides of the push plate is bonded together. When the user disassembles the plate for the second time, the soft adhesive wrapped around the bolt can be pulled out, reducing the possibility of soft adhesive remaining in the mounting hole.

[0015] Optionally, the push plate is provided with a ball for abutting the bolt, the ball being spherical.

[0016] By adopting the above technical solution, the spherical shape of the top ball reduces the contact area with the bolt, thereby improving the completeness of the soft rubber wrapping the bolt.

[0017] Optionally, the push plate may also be provided with a pinch piece on the side opposite to the top ball for manual gripping by a person.

[0018] By adopting the above technical solution, the pinching method makes it easier for personnel to remove the push plate and seal the cover. Afterwards, the soft rubber can be pinched into a ball and placed back between the inner end face of the push plate and the cover.

[0019] Optionally, the outer circumferential wall of the cover has a protrusion protruding outward, and an anti-loosening pin is slidably inserted on the protrusion. An elastic ball is arranged on the anti-loosening pin. The wall panel has an anti-disengagement hole for inserting the anti-loosening pin and the elastic ball. The anti-disengagement hole gradually increases in size along the direction away from the protrusion, and the diameter of the end of the anti-loosening hole for inserting the anti-loosening pin is slightly smaller than the diameter of the elastic ball.

[0020] By adopting the above technical solution, when the cap is fully tightened into the mounting hole, the anti-loosening pin is exactly coaxial with the anti-detachment hole. When the personnel push the anti-loosening pin into the anti-detachment hole, the elastic ball is deformed and also enters the anti-detachment hole. After the deformation is restored, it is difficult to detach from the anti-detachment hole, thus playing the role of preventing the cap from loosening.

[0021] Optionally, an anti-loosening ball is arranged at the end of the anti-loosening pin located outside the anti-loosening hole.

[0022] By adopting the above technical solution, the anti-loosening pin can be prevented from detaching from the protrusion.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The cap can cover the bolts, preventing them from being directly exposed to the outside environment, thus reducing the possibility of bolt corrosion;

[0025] 2. Before installation, first knead the soft rubber into a ball and place it between the inner end face of the push plate and the cover. As the cover is gradually screwed into the mounting hole, the push plate contacts the bolt and pushes the soft rubber from the gap to be squeezed to wrap around the bolt. The push plate can restrain the soft rubber and reduce the possibility of the soft rubber accidentally falling out before the cover and the mounting hole are successfully threaded together.

[0026] 3. When the cap is fully tightened into the mounting hole, the anti-loosening pin is exactly coaxial with the anti-detachment hole. When the person pushes the anti-loosening pin into the anti-detachment hole, the elastic ball is deformed and also enters the anti-detachment hole. After the deformation is restored, it is difficult to detach from the anti-detachment hole, thus playing the role of preventing the cap from loosening. Attached Figure Description

[0027] Figure 1 This is a cross-sectional view of an embodiment of this application.

[0028] Figure 2 This is an exploded view of the area between the cover and the push plate in an embodiment of this application.

[0029] Explanation of reference numerals in the attached diagram: 1. Wall panel; 101. Mounting hole; 102. Anti-detachment hole; 2. Cover; 201. Slide groove; 3. Soft rubber; 4. Push plate; 5. Top ball; 6. Pinch piece; 7. Protrusion; 8. Anti-loosening pin; 9. Elastic ball; 10. Anti-detachment ball. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0031] This application discloses a lightweight steel structure prefabricated residential building.

[0032] Reference Figure 1 The light steel structure prefabricated house includes two wall panels 1 bolted together. Mounting holes 101 are provided at the corresponding bolting positions on the wall panels 1. A cover 2 is threaded into the mounting holes 101. The cover 2 is made of rigid plastic as used in the prior art.

[0033] Reference Figure 1 and Figure 2 A push plate 4 is placed inside the cover 2, with a gap between the push plate 4 and the cover 2. A sliding groove 201 is formed on the inner wall of the cover 2 along its axial direction, and the push plate 4 extends into the sliding groove 201 and slides with it.

[0034] Reference Figure 1 The inner end face of the push plate 4 and the cover 2 is filled with soft glue 3. The soft glue 3 is a cleaning soft mud in the prior art, and its function is to wrap the bolt.

[0035] Reference Figure 1 and Figure 2 The push plate 4 has an integrally formed top ball 5 at the center position on the side facing the bolt. The top ball 5 is hemispherical and is used to abut against the top ball 5.

[0036] Reference Figure 1 and Figure 2 During installation, the cap 2 is gradually screwed into the mounting hole 101, and the ball 5 on the push plate 4 contacts the bolt. The push plate 4 then squeezes the soft rubber 3 from the gap to the bolt.

[0037] Reference Figure 1 and Figure 2 Because the soft rubber 3 has a certain degree of fluidity, it can slowly wrap around the bolt under the action of gravity, thereby isolating the bolt from moisture and reducing the possibility of bolt corrosion.

[0038] When the cover 2 is fully tightened with the mounting hole 101, there is a gap between the side of the push plate 4 facing away from the bolt and the inner wall of the cover 2. In this way, the soft rubber 3 on both sides of the push plate 4 can still remain as one piece. When disassembling later, the soft rubber 3 wrapped around the bolt can be easily pulled out.

[0039] Reference Figure 2 On the side of the push plate 4 opposite to the top ball 5, there are two pinch pieces 6 that are manually pinched by personnel. The two pinch pieces 6 are symmetrically distributed about the axis of the push plate 4.

[0040] Personnel manually pinch the pinch plate 6 to facilitate the removal of the push plate 4 from the cover 2, while the kneaded soft rubber 3 can be placed back between the inner end faces of the push plate 4 and the cover 2.

[0041] Reference Figure 1 and Figure 2 The outer circumferential wall of the cover 2 has a protrusion 7 protruding outward, and an anti-loosening pin 8 is slidably inserted on the protrusion 7. An elastic ball 9 is glued to one end of the anti-loosening pin 8, and an anti-detachment ball 10 is integrally formed on the other end.

[0042] The wall panel 1 has an anti-loosening hole 102 for inserting the anti-loosening pin 8 and the elastic ball 9. The anti-loosening hole 102 gradually increases in size along the direction away from the protrusion 7, and the diameter of the end of the anti-loosening hole 102 for inserting the anti-loosening pin 8 is slightly smaller than the diameter of the elastic ball 9.

[0043] When the cover 2 is fully tightened into the mounting hole 101, the anti-loosening pin 8 is exactly coaxial with the anti-detachment hole 102. When the personnel push the anti-loosening pin 8 into the anti-detachment hole 102, the elastic ball 9 is deformed and also enters the anti-detachment hole 102. After the deformation is restored, it is difficult to detach from the anti-detachment hole 102, thus playing the role of preventing the cover 2 from loosening.

[0044] The implementation principle of a lightweight steel structure prefabricated house according to this application embodiment is as follows: During installation, the cover 2 is gradually screwed into the mounting hole 101, and the top ball 5 on the push plate 4 contacts the bolt. The push plate 4 then squeezes the soft rubber 3 from the gap to the bolt. Because the soft rubber 3 has a certain fluidity, it can slowly wrap around the bolt under the action of gravity, thereby isolating the bolt from moisture. Afterwards, the anti-loosening pin 8 is pushed into the anti-detachment hole 102. The elastic ball 9, after being deformed, also enters the anti-detachment hole 102. After recovering its deformation, it is difficult to detach from the anti-detachment hole 102.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A lightweight steel structure prefabricated house, comprising two wall panels (1) bolted together, characterized in that: The wall panel (1) has an installation hole (101) at the corresponding bolting position, and the installation hole (101) is threaded with a cap (2).

2. The light gauge steel construction fabricated house as claimed in claim 1, wherein: The cover (2) contains soft rubber (3) for wrapping the bolts.

3. The light gauge steel construction fabricated house as claimed in claim 1, wherein: A push plate (4) is placed inside the cover (2), and there is a gap between the push plate (4) and the cover (2). A sliding groove (201) is provided on the inner wall of the cover (2) along its axial direction. The push plate (4) extends into the sliding groove (201) and slides with it.

4. The light-gauge steel construction fabricated house according to claim 3, characterized in that: When the cover (2) is fully tightened with the mounting hole (101), there is a gap between the push plate (4) on the side facing away from the bolt and the inner wall of the cover (2).

5. The light-gauge steel construction fabricated house according to claim 4, characterized in that: The push plate (4) is provided with a ball (5) for abutting the bolt, and the ball (5) is spherical.

6. The light-gauge steel construction fabricated house according to claim 5, characterized in that: The push plate (4) is also provided with a pinch piece (6) on the side opposite to the top ball (5) for manual pinching by personnel.

7. The light-gauge steel construction fabricated house according to claim 1, characterized in that: The outer circumferential wall of the cover (2) has a protrusion (7) protruding outward. An anti-loosening pin (8) is slidably inserted on the protrusion (7). An elastic ball (9) is arranged on the anti-loosening pin (8). The wall panel (1) has an anti-disengagement hole (102) for inserting the anti-loosening pin (8) and the elastic ball (9). The anti-disengagement hole (102) gradually increases in size along the direction away from the protrusion (7), and the diameter of the end of the anti-loosening hole (102) for inserting the anti-loosening pin (8) is slightly smaller than the diameter of the elastic ball (9).

8. The light-gauge steel construction fabricated house according to claim 7, characterized in that: The anti-loosening pin (8) has an anti-loosening ball (10) arranged at one end outside the anti-loosening hole (102).