Torsion-resistant self-tapping screw for building shear wall

Abstract

The utility model relates to the field of self-tapping screws, and provides an anti-torque self-tapping screw for a building shear wall, which comprises a body. The smooth section is arranged on the outer surface of the body, and a bottom plate is fixedly arranged on the outer surface of the smooth section in a sleeving mode. During use, the body is fixed into the shear wall, the fixing plate is rotated to press the reinforcing plate downwards, and then the reinforcing plate makes contact with the surface of the shear wall; the contact area between the screw and a shear wall can be effectively increased through the reinforcing plate, the phenomenon of local stress concentration is reduced, the screw can be more stably fixed in the wall, material damage or screw loosening caused by too large local stress is avoided, the reinforcing plate is composed of the isolation layer, the inner layer, the torsion-resistant layer and the outer layer, and therefore when the screw is used, the screw can be prevented from being damaged by the isolation layer, the inner layer, the torsion-resistant layer and the outer layer. The structural stability, the torsion resistance and the dispersed stress of the screw are improved through the reinforcing plate, and the practicability of the screw is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of self-tapping screws, in particular to a torsion-resistant self-tapping screw for a building shear wall. BACKGROUND

[0002] In building construction, shear walls, as an important structural component, bear shear forces and bending moments from different directions, so the requirements for the fixation and reinforcement of shear walls are very high. In order to effectively connect other components with the shear wall, screws, as a common connecting piece, are widely used in shear wall structures.

[0003] Traditional self-tapping screws usually have strong self-drilling and fastening capabilities, but under long-term stress, the stability and anti-loosening of the screw may be affected, especially in load-bearing structures such as shear walls, the loosening or fracture of the screw will threaten the safety of the building. Screws for building shear walls usually rely on the contact of their own threads with the shear wall to achieve fixation. However, as the use time increases, the screw may loosen or corrode due to factors such as stress changes, environmental corrosion, material fatigue, etc. This problem is more pronounced especially in the case of frequent shear forces or vibrations, and the contact area of traditional screws is limited, local stress is easily concentrated, causing material damage or screw breakage. CONTENT OF THE INVENTION

[0004] The torsion-resistant self-tapping screw for a building shear wall provided by the application improves the stability, torsion resistance and stress dispersion of the screw structure by using a reinforcing plate when the screw is used, improves the practicality of the screw, and has good overall performance, preventing the risk of fracture and damage of the screw during use.

[0005] To achieve the above-mentioned purpose, the application adopts the following technical solutions: a torsion-resistant self-tapping screw for a building shear wall, the screw comprising:

[0006] a body;

[0007] a smooth section provided on the outer surface of the body, and a bottom plate fixedly sleeved on the outer surface of the smooth section, the outer surface of the smooth section being used for mounting a reinforcing plate to improve the torsion resistance of the screw;

[0008] a reinforcing plate provided on one side of the bottom plate and movably sleeved on the outer surface of the smooth section, the bottom plate limiting the reinforcing plate to prevent the reinforcing plate from sliding to the lower side of the screw, and the reinforcing plate being slidable on the outer surface of the smooth section;

[0009] The fixed plate is sleeved on the outer surface of the smooth section in a threaded mode, can rotate on the outer surface of the smooth section, and is pressed downward to the reinforcing plate by rotating the fixed plate, so that the reinforcing plate and the surface of the shear wall are in contact together, the contact area between the screw and the shear wall is effectively increased by the reinforcing plate, the local stress concentration phenomenon is reduced, the screw is more stably fixed in the wall body, and material damage or screw loosening caused by excessive local stress is avoided.

[0010] As a further improved scheme of the present application, the reinforcing plate is composed of an isolation layer, an inner layer, a torsion-resistant layer and an outer layer, the isolation layer is located on the inner side of the reinforcing plate and is used to isolate the part in contact with the shear wall, to avoid corrosion or chemical reaction caused by long-term use, is made of rubber material, has good wear resistance, isolation and buffering effect, avoids direct contact of metal material with the surface of the wall body, and reduces the influence of friction on the wall body, the inner layer is arranged on the upper side of the isolation layer and is used to provide structural stability and bearing capacity of the reinforcing plate, and the material is aluminum alloy.

[0011] As a further improved scheme of the present application, the torsion-resistant layer is arranged on the upper side of the inner layer and is used to enhance the torsion resistance of the reinforcing plate, is made of composite material, and the outer layer is coated on the outer side of the reinforcing plate and is used to protect the reinforcing plate from corrosion, and is made of corrosion-resistant paint.

[0012] As a further improved scheme of the present application, the outer surface of the body is provided with a threaded section, and a pointed head is fixedly arranged on one side of the body, the body can be inserted into the through hole of the shear wall through the pointed head.

[0013] As a further improved scheme of the present application, a round head is fixedly arranged on one side of the body, the round head is circular and is provided with an outer groove on the outer surface, the outer groove can effectively disperse the torque applied on the screw, prevent the torque from being concentrated on a single point, reduce the sliding or damage caused by excessive pressure, and improve the stability of the screw.

[0014] As a further improved scheme of the present application, a cross groove is arranged on one side of the round head, and the screw is turned into the shear wall through the cross groove.

[0015] As a further improved scheme of the present application, a knurled section is arranged on the outer surface of the body, and a shaft core is fixedly embedded at the inner wall of the body, the knurled section can increase the friction between the screw and the surface of the object, prevent the screw from sliding or loosening during installation, improve the fixing performance of the screw, and the shaft core improves the bending resistance and fracture resistance of the screw.

[0016] As a further improvement of the application: the outer surface of the smooth section is movably sleeved with a gasket, the gasket and the shear wall avoid contact together, which can increase the friction between the screw and the wall body, avoid the screw from loosening under the change of stress, and maintain the stability of the structure.

[0017] Compared with the prior art, the application has the advantages and positive effects that,

[0018] 1. In the application, when the screw is used, the body is fixed inside the shear wall, at this time the gasket above the screw and the shear wall avoid contact together, which can increase the friction between the screw and the wall body, avoid the screw from loosening under the change of stress, and maintain the stability of the structure. The fixing plate can rotate on the outer surface of the smooth section, the reinforcing plate can slide on the outer surface of the smooth section above the screw, the fixing plate is pressed down to the reinforcing plate by rotating the fixing plate, and then the reinforcing plate and the surface of the shear wall are in contact together. The reinforcing plate can effectively increase the contact area between the screw and the shear wall, reduce the local stress concentration phenomenon, make the screw more stably fixed in the wall body, avoid material damage or screw loosening due to excessive local stress, and the reinforcing plate is composed of an isolation layer, an inner layer, a torsion-resistant layer and an outer layer, so as to improve the stability, torsion resistance and stress dispersion of the structure by the reinforcing plate when the screw is used, and improve the practicability of the screw.

[0019] 2. In the application, when the screw is used, the body can be inserted into the through hole of the shear wall through the sharp head, at this time the screw is turned into the inside of the shear wall through the cross slot using the cross-shaped starting tool. When the screw is turned to the knurled section, the knurled section can increase the friction between the screw and the surface of the object, prevent the screw from sliding or loosening during installation, improve the fixing performance of the screw, the outer groove can effectively disperse the torque applied on the screw, prevent the torque from concentrating on a single point, reduce the sliding or damage caused by excessive pressure, improve the stability of the screw, and the shaft core improves the bending resistance and fracture resistance of the screw, so that the overall performance of the screw is good, and the risk of fracture and damage of the screw during use is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A side view of the anti-torsion self-tapping screw for building shear walls is provided.

[0021] Figure 2 A front view of the anti-torsion self-tapping screw for building shear walls is provided.

[0022] Figure 3 A sectional view of the anti-torsion self-tapping screw for building shear walls is provided.

[0023] Figure 4 A structure diagram of the reinforcing plate in the anti-torsion self-tapping screw for building shear walls is provided.

[0024] Legend: 1, body; 2, reinforcing plate; 201, bottom plate; 202, fixed plate; 203, gasket; 204, isolation layer; 205, inner layer; 206, anti-torsion layer; 207, outer layer; 3, sharp head; 301, threaded section; 302, knurled section; 303, smooth section; 304, round head; 305, cross slot; 306, outer slot; 307, shaft core. DETAILED DESCRIPTION

[0025] In order to enable the above-mentioned objects, features and advantages of the present application to be more clearly understood, the following will further describe the present application with reference to the drawings and examples. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0026] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways beyond the specific details set forth herein, and, accordingly, the present application is not limited to the specific embodiments disclosed in the following description.

[0027] Example 1, as shown in the present application provides a torsion-resistant self-tapping screw for a building shear wall, which comprises: Figures 1 to 4

[0028] the body 1;

[0029] the smooth section 303 is arranged on the outer surface of the body 1, and a bottom plate 201 is fixedly sleeved on the outer surface of the smooth section 303, the outer surface of the smooth section 303 is used for mounting the reinforcing plate 2 to improve the torsion resistance of the screw;

[0030] the reinforcing plate 2 is arranged on one side of the bottom plate 201, and the reinforcing plate 2 is movably sleeved on the outer surface of the smooth section 303, the bottom plate 201 limits the reinforcing plate 2 to prevent the reinforcing plate 2 from sliding to the lower side of the screw, and the reinforcing plate 2 can slide on the outer surface of the smooth section 303;

[0031] the fixed plate 202 is threadedly sleeved on the outer surface of the smooth section 303, the fixed plate 202 can rotate on the outer surface of the smooth section 303, the fixed plate 202 is pressed downward on the reinforcing plate 2 by rotating the fixed plate 202, so that the reinforcing plate 2 and the surface of the shear wall are in contact together, the reinforcing plate 2 can effectively increase the contact area between the screw and the shear wall, reduce the local stress concentration phenomenon, and make the screw more stably fixed in the wall body to avoid material damage or screw loosening due to excessive local stress.

[0032] As shown in the present application, the present application provides a torsion-resistant self-tapping screw for a building shear wall, which comprises: Figures 1 to 4 ​As shown, the reinforcing plate 2 is composed of an isolation layer 204, an inner layer 205, a torsion-resistant layer 206 and an outer layer 207. The isolation layer 204 is located on the inner side of the reinforcing plate 2 and is used to isolate the part of the screw in contact with the shear wall to avoid corrosion or chemical reaction due to long-term use. The isolation layer 204 is made of rubber material, which has good wear resistance, isolation and buffering effect, avoiding direct contact of metal material with the surface of the wall, reducing the influence of friction on the wall. The inner layer 205 is arranged on the upper side of the isolation layer 204 and is used to provide structural stability and bearing capacity of the reinforcing plate. The material of the inner layer 205 is aluminum alloy.

[0033] As shown in Figures 1 to 4 , the torsion-resistant layer 206 is arranged on the upper side of the inner layer 205 and is used to enhance the torsion resistance of the reinforcing plate 2. The torsion-resistant layer 206 is made of composite material. The outer layer 207 is coated on the outer side of the reinforcing plate 2 and is used to protect the reinforcing plate from corrosion. The outer layer 207 is made of corrosion-resistant paint.

[0034] As shown in Figures 1 to 4 , a threaded section 301 is formed on the outer surface of the body 1. A pointed head 3 is fixedly arranged on one side of the body 1. The pointed head 3 can be inserted into the through hole of the shear wall.

[0035] As shown in Figures 1 to 4 , a round head 304 is fixedly arranged on one side of the body 1. The round head 304 is circular and has an outer groove 306 formed on the outer surface. The outer groove 306 can effectively disperse the torque applied on the screw, prevent the torque from concentrating on a single point, reduce the sliding or damage caused by excessive pressure, and improve the stability of the screw.

[0036] As shown in Figures 1 to 4 , a cross groove 305 is formed on one side of the round head 304. The cross groove 305 is used to turn the screw into the shear wall by using a cross screwdriver.

[0037] As shown in Figures 1 to 4 , a knurled section 302 is formed on the outer surface of the body 1. An axle core 307 is fixedly embedded at the inner wall of the body 1. The knurled section 302 can increase the friction between the screw and the surface of the object, prevent the screw from sliding or loosening during installation, improve the fixing performance of the screw, and improve the bending resistance and fracture resistance of the screw.

[0038] As shown in Figures 1 to 4 , a gasket 203 is movably sleeved on the outer surface of the smooth section 303. The gasket 203 and the shear wall avoid contact, which can increase the friction between the screw and the wall, avoid loosening of the screw under stress change, and maintain structural stability.

[0039] Working principle: when using the screw, the body 1 is fixed inside the shear wall, at this time the washer 203 above the screw and the shear wall avoid contact together, which can increase the friction between the screw and the wall, avoid the screw loosening under the change of stress, keep the structure stable, the fixed plate 202 can rotate on the outer surface of the smooth section 303, the reinforcing plate 2 can slide on the outer surface of the smooth section 303 above the screw, by rotating the fixed plate 202 to press down the reinforcing plate 2, and then make the reinforcing plate 2 contact with the surface of the shear wall, through the reinforcing plate 2, the contact area between the screw and the shear wall can be effectively increased, the local stress concentration phenomenon is reduced, the screw can be more stably fixed in the wall, and material damage or screw loosening caused by excessive local stress is avoided, and the reinforcing plate 2 is composed of the isolation layer 204, the inner layer 205, the torsion-resistant layer 206 and the outer layer 207, the isolation layer 204 is used to isolate the part contacted by the screw and the shear wall, to avoid corrosion or chemical reaction caused by long-term use, the isolation layer 204 is made of rubber material, which has good wear resistance, isolation and buffering effect, avoiding direct contact of metal material with the surface of the wall, reducing the influence of friction on the wall, the inner layer 205 provides structural stability and bearing capacity of the reinforcing plate 2, which is made of aluminum alloy, the torsion-resistant layer 206 is used to improve the torsion resistance of the screw, which is made of composite material, and the outer layer 207 protects the reinforcing plate from corrosion, which is made of corrosion-resistant paint, so that when using the screw, the structural stability, torsion resistance and stress dispersion of the screw are improved through the reinforcing plate 2, and the practicability of the screw is improved, when using the screw, the body 1 can be inserted into the through hole of the shear wall through the pointed head 3, at this time the screw is turned into the inside of the shear wall through the cross slot 305, when the screw is turned on the knurled section 302, the knurled section 302 can increase the friction between the screw and the surface of the object, prevent the screw from sliding or loosening during installation, and improve the fixing performance of the screw, the outer groove 306 can effectively disperse the torque applied on the screw, prevent the torque from concentrating on a single point, reduce the sliding or damage caused by excessive pressure, and improve the stability of the screw, and the shaft core 307 improves the bending resistance and fracture resistance of the screw, so that the overall performance of the screw is good, and the risk of fracture and damage of the screw during use is prevented.

[0040] The above is only the preferred embodiment of the application, and is not a limitation on other forms of the application. Any person skilled in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made to the above embodiments without departing from the technical scheme of the application, according to the technical essence of the application, still belongs to the protection scope of the technical scheme of the application.

Claims

1. A twist-resistant self-tapping screw for use in building shear walls, characterized by, The screw comprises: a body (1); a smooth section (303) arranged on the outer surface of the body (1), and a bottom plate (201) fixedly sleeved on the outer surface of the smooth section (303); a reinforcing plate (2) arranged on one side of the bottom plate (201) and movably sleeved on the outer surface of the smooth section (303); a fixed plate (202) threadedly sleeved on the outer surface of the smooth section (303).

2. The anti-torsion self-tapping screw for building shear walls according to claim 1, characterized in that: The reinforcing plate (2) is composed of an isolation layer (204), an inner layer (205), a torsion-resistant layer (206) and an outer layer (207), the isolation layer (204) is located on the inner side of the reinforcing plate (2) and is used to isolate the part of the screw in contact with the shear wall, the inner layer (205) is arranged on the upper side of the isolation layer (204) and is used to provide structural stability and bearing capacity of the reinforcing plate.

3. The torsion-resistant self-tapping screw for building shear walls according to claim 2, characterized in that: The torsion-resistant layer (206) is arranged on the upper side of the inner layer (205), and the outer layer (207) is coated on the outer side of the reinforcing plate (2) and is used to protect the reinforcing plate from corrosion.

4. The torsion-resistant self-tapping screw for building shear walls according to claim 1, characterized in that: A threaded section (301) is arranged on the outer surface of the body (1), and a pointed head (3) is fixedly arranged on one side of the body (1).

5. The torsion-resistant self-tapping screw for building shear walls according to claim 1, characterized in that: A round head (304) is fixedly arranged on one side of the body (1), the round head (304) is circular and has an outer groove (306) arranged on the outer surface thereof.

6. The torsion-resistant self-tapping screw for building shear walls according to claim 5, characterized in that: A cross groove (305) is arranged on one side of the round head (304).

7. The torsion-resistant self-tapping screw for building shear walls according to claim 1, characterized in that: A knurled section (302) is arranged on the outer surface of the body (1), and a shaft core (307) is fixedly embedded at the inner wall of the body (1).

8. The torsion-resistant self-tapping screw for building shear walls according to claim 1, characterized in that: A gasket (203) is movably sleeved on the outer surface of the smooth section (303).

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