Quick expansion screw assembly

Abstract

The utility model discloses a quick expansion screw assembly which comprises a fixing sleeve, an expansion portion is arranged at one end of the fixing sleeve, a screw used for extruding the expansion portion is connected to the other end of the fixing sleeve in a penetrating mode, protruding threads are arranged on the outer side of the fixing sleeve, and a rotating portion is arranged on the inner wall of the fixing sleeve. An epoxy resin column is arranged on the inner wall of the fixed sleeve; the protruding threads are arranged on the outer side of the fixing sleeve, the fixing sleeve and the expansion part arranged at the end of the fixing sleeve are rotationally screwed into the surface of the gypsum board through the rotating part by means of the protruding threads, and then screws are screwed into the fixing sleeve and the expansion part, so that the expansion part expands to fix the gypsum board. The epoxy resin column arranged on the inner wall of the fixing sleeve can enhance the friction force between the fixing sleeve and the screw, the connecting stability between the screw and the inner wall of the fixing sleeve can be improved, and the phenomenon that the screw slips from the inner wall of the fixing sleeve and affects the expansion fixing gypsum board of the expansion part is avoided.

Description

Technical Field

[0001] The utility model relates to the field of building installation, in particular to a rapid expansion screw assembly. Background Art

[0002] Gypsum board is a lightweight gypsum board widely used in buildings because of its light weight, high strength, easy processing, and good sound insulation, heat insulation and fire resistance. However, when it is necessary to fix objects on the gypsum board, the use of ordinary expansion bolts often cannot meet the requirements, and special fixing components are needed to ensure firm and safe installation. The outer side of the existing gypsum board expansion sleeve is provided with a raised thread, and the inner wall of the end is provided with a cross groove, which is convenient for construction personnel to directly screw the bolt sleeve into the surface of the gypsum board through tools without drilling in advance, thereby achieving quick installation. However, the material of the existing expansion sleeve is made of plastic. When the screw is screwed in, the inner wall of the expansion sleeve of the raised thread section rotates through the outer side of the screw, and the friction of the inner wall on the screw is reduced, resulting in the phenomenon of easy thread slip between the screw and the inner wall of the expansion sleeve, which affects the fixation of the expansion sleeve. In order to solve the problem of reduced friction between the expansion sleeve and the screw, a new type of quick expansion screw assembly is needed. Utility Model Content

[0003] The purpose of the utility model is to provide a rapid expansion screw assembly to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a quick expansion screw assembly, comprising a fixed sleeve, one end of the fixed sleeve is provided with an expansion portion for expanding and limiting the fixed sleeve, the other end of the fixed sleeve is inserted and connected with a screw for squeezing and expanding the expansion portion, the outer side of the fixed sleeve is provided with a raised thread for fixing the gypsum board and the fixed sleeve, the inner wall of the fixed sleeve is provided with a rotating portion for driving the raised thread to rotate and lock, and the inner wall of the fixed sleeve is provided with an epoxy resin column for enhancing the strength of the inner wall of the fixed sleeve.

[0005] Preferably, a fastening hole for inserting a screw is opened at the end of the epoxy resin column.

[0006] Preferably, the expansion portion includes a plurality of deformable rods, and the plurality of deformable rods are arranged around one end of the fixing sleeve.

[0007] Preferably, the end of the deformable rod is provided with a conical protrusion for piercing the surface of the gypsum board.

[0008] Preferably, the rotating portion comprises a cross groove arranged on the inner wall of the other end of the fixed sleeve, and the cross groove is used for the tool to rotate the fixed sleeve.

[0009] Preferably, a limiting portion for limiting the depth of the fixing sleeve being screwed into the gypsum board is provided at the other end of the fixing sleeve and located outside the screw.

[0010] Preferably, the limiting portion comprises a limiting ring arranged at the other end of the fixing sleeve, and the limiting ring is sleeved on the outer side of the screw.

[0011] Technical effects and advantages of the utility model:

[0012] The utility model provides a raised thread on the outer side of a fixing sleeve, and through a rotating part, the fixing sleeve and an expansion part provided at the end thereof are rotated and screwed into the surface of the gypsum board by using the raised thread, and then the screw is screwed into the fixing sleeve and the expansion part, so that the expansion part expands and fixes the gypsum board. The epoxy resin column provided on the inner wall of the fixing sleeve can enhance the friction between the fixing sleeve and the screw, and can increase the connection stability between the screw and the inner wall of the fixing sleeve, thereby avoiding the phenomenon of thread slippage between the screw and the inner wall of the fixing sleeve, which affects the expansion and fixation of the gypsum board by the expansion part. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is one of the overall structural diagrams of the utility model.

[0014] Figure 2 The second schematic diagram of the overall structure of the utility model.

[0015] Figure 3 The third is a schematic diagram of the overall structure of the utility model.

[0016] Figure 4 It is a top view of the fixed sleeve of the utility model.

[0017] Figure 5 It is a cross-sectional view of the utility model as a whole.

[0018] In the figure: 1. fixing sleeve; 101. protruding thread; 102. limiting ring; 103. cross groove; 104. epoxy resin column; 1041. fastening hole; 2. deformable rod; 201. conical protrusion; 3. screw. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The utility model provides Figure 1-5A quick expansion screw assembly shown includes a fixed sleeve 1, one end of the fixed sleeve 1 is provided with an expansion portion for expanding and limiting the fixed sleeve 1, and the other end of the fixed sleeve 1 is interspersed with a screw 3 for squeezing and expanding the expansion portion;

[0021] Specifically, the expansion portion includes a plurality of deformable rods 2, which are arranged around one end of the fixed sleeve 1, and the ends of the deformable rods 2 are provided with conical protrusions 201 for piercing the surface of the gypsum board;

[0022] It should be noted that the fixing sleeve 1, the deformable rod 2 and the conical protrusion 201 are all made of polyethylene, which has good corrosion resistance and anti-aging properties, can effectively protect the screw 3, and is lightweight and easy to install and operate. The three are made of an integrated molding process, and the opposite side of the deformable rod 2 is provided with a cylindrical groove for the screw 3 to be inserted, and the conical protrusion 201 facilitates the deformation rod 2 to be inserted into the surface of the gypsum board;

[0023] The outer side of the fixing sleeve 1 is provided with a raised thread 101 for fixing the gypsum board and the fixing sleeve 1, and the inner wall of the fixing sleeve 1 is provided with a rotating part for driving the raised thread 101 to rotate and lock;

[0024] Specifically, the rotating part includes a cross groove 103 provided on the inner wall of the other end of the fixed sleeve 1, and the cross groove 103 is used for the tool to rotate the fixed sleeve 1;

[0025] It should be noted that the raised thread 101 facilitates the fixing sleeve 1 to be rotated and inserted into the inner wall of the gypsum board, and can enhance the friction fixation of the gypsum board to the fixing sleeve 1, and the cross groove 103 facilitates the construction personnel to use tools to rotate the fixing sleeve 1 as a whole;

[0026] The inner wall of the fixed sleeve 1 is provided with an epoxy resin column 104 for enhancing the strength of the inner wall of the fixed sleeve 1, and the end of the epoxy resin column 104 is provided with a fastening hole 1041 for the screw 3 to be inserted;

[0027] It should be noted that the epoxy resin column 104 is formed and solidified by epoxy resin and curing agent, and the epoxy resin column 104 is bonded to the inner wall of the fixed sleeve 1 by glue, and the cross-sectional diameter of the fastening hole 1041 in the middle is smaller than the cross-sectional diameter of the screw 3, so as to facilitate the relative position of the screw 3 and the fixed sleeve 1 to be tightened and rotated;

[0028] A limiting portion for limiting the depth of the fixing sleeve 1 being screwed into the gypsum board is provided at the other end of the fixing sleeve 1 and located outside the screw 3;

[0029] Specifically, the limiting part includes a limiting ring 102 arranged at the other end of the fixed sleeve 1, and the limiting ring 102 is sleeved on the outer side of the screw 3;

[0030] It should be noted that the limiting ring 102 is made of polyethylene and is connected to the fixed sleeve 1 by integral injection molding. The cross-sectional diameter of the limiting ring 102 is larger than the cross-sectional diameter of the fixed sleeve 1. The limiting ring 102 stays on the surface of the gypsum board, thereby limiting the rotation depth of the fixed sleeve 1. The inner cavity cross-sectional diameter of the fixed sleeve 1 is the same as the inner cavity cross-sectional diameter of the fixed sleeve 1.

[0031] In actual use, a raised thread 101 is provided on the outer side of the fixed sleeve 1, and a tool is used to insert the cross groove 103, and the fixed sleeve 1 is rotated. The fixed sleeve 1 and the deformable rod 2 and the conical protrusion 201 provided at its end are rotated and screwed into the surface of the gypsum board using the raised thread 101. Then the screw 3 is screwed between the fixed sleeve 1 and the deformable rod 2, so that the deformable rod 2 is deformed and expanded, and thus fixed to the gypsum board. The epoxy resin column 104 provided on the inner wall of the fixed sleeve 1 can enhance the friction between the fixed sleeve 1 and the screw 3, and increase the connection stability between the screw 3 and the inner wall of the fixed sleeve 1, thereby avoiding the phenomenon of thread slippage between the screw 3 and the inner wall of the fixed sleeve 1, affecting the squeezing of the deformable rod 2 by the screw 3, and further affecting the insertion and fixation of the expansion screw assembly to the gypsum board.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick expansion screw assembly, comprising a fixing sleeve (1), characterized in that: One end of the fixed sleeve (1) is provided with an expansion portion for expanding and limiting the fixed sleeve (1), the other end of the fixed sleeve (1) is inserted and connected with a screw (3) for squeezing and expanding the expansion portion, the outer side of the fixed sleeve (1) is provided with a raised thread (101) for fixing the gypsum board and the fixed sleeve (1), the inner wall of the fixed sleeve (1) is provided with a rotating portion for driving the raised thread (101) to rotate and lock, and the inner wall of the fixed sleeve (1) is provided with an epoxy resin column (104) for enhancing the strength of the inner wall of the fixed sleeve (1).

2. A rapid expansion screw assembly according to claim 1, characterized in that: The end of the epoxy resin column (104) is provided with a fastening hole (1041) for inserting a screw (3).

3. A rapid expansion screw assembly according to claim 1, characterized in that: The expansion portion comprises a plurality of deformable rods (2), and the plurality of deformable rods (2) are arranged around one end of the fixed sleeve (1).

4. A rapid expansion screw assembly according to claim 3, characterized in that: The end of the deformable rod (2) is provided with a conical protrusion (201) for piercing the surface of the gypsum board.

5. A rapid expansion screw assembly according to claim 1, characterized in that: The rotating part comprises a cross groove (103) arranged on the inner wall of the other end of the fixed sleeve (1), and the cross groove (103) is used for a tool to rotate the fixed sleeve (1).

6. A rapid expansion screw assembly according to claim 1, characterized in that: A limiting portion for limiting the depth of the fixing sleeve (1) being screwed into the gypsum board is provided at the other end of the fixing sleeve (1) and located outside the screw (3).

7. A rapid expansion screw assembly according to claim 6, characterized in that: The limiting portion comprises a limiting ring (102) arranged at the other end of the fixing sleeve (1), and the limiting ring (102) is sleeved on the outside of the screw (3).

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