WO2010130185A1

WO2010130185A1 - Anchor bolt

Info

Publication number: WO2010130185A1
Application number: PCT/CN2010/072548
Authority: WO
Inventors: 瞿滨
Original assignee: 福建鹏坤实业有限公司
Priority date: 2009-05-14
Filing date: 2010-05-10
Publication date: 2010-11-18
Also published as: CN201722791U

Abstract

An anchor bolt consists of a nut (1), a bolt (2) and an expansion element (3). The outer end of the bolt is provided with a screw thread section (21), and the inner end of the bolt is provided with a bolt end (22). The expansion element is tubular, and its wall is opened with multiple rows of expansion holes (31) in radial direction for guiding the tubular expansion element to perform expansion deformation. Expansion pieces (32) are formed between adjacent expansion holes in each row. The expansion element is sleeved on the bolt and its inner end abuts on the bolt end. The nut is screwed on the screw thread section and abuts on the outer end of the expansion element. The anchor bolt has good anchoring effect and simple structure, and the manufacturing process thereof is simple and convenient.

Description

Anchor bolt

技术领域Technical field

The invention belongs to the technical field of building anchors, in particular to a building anchor.

背景技术Background technique

As shown in FIG. 1 , the conventional anchor bolt is composed of a nut 100, a screw 200 and an expansion member 300. The inner end of the screw 200 has a wedge-shaped head 201. The expansion member 300 has a tubular shape and has an expansion piece 301 at the inner end and a sleeve 300 of the expansion member. On the screw 200, the expansion piece 301 abuts against the wedge head 201, and the nut 100 is screwed over the outer end of the screw 200.

During installation, the screw 200 sleeved with the expansion member 300 is inserted into the drilled wall hole, and the external object is hung on the outer end of the screw 200. Then, the nut 100 is screwed onto the screw 200, and the nut 100 is screwed. Pushing the expansion member 300 into the wall hole, so that the inner end expansion piece 301 of the expansion member 300 is expanded under the guidance of the wedge head 201, and firmly grasps the inner wall of the wall hole, so that the entire anchor bolt is fixed in the wall hole. To achieve the purpose of fixing the external objects on the building.

Because the number of the expansion pieces 301 of the expansion member 300 is small, the contact surface with the wall hole is small, and the gripping force is insufficient, especially in the hollow brick body, the expansion piece 301 is likely to be in the cavity, as shown in the figure. As shown in 1-1, the anchoring is invalid, so the fixing effect is poor and has been gradually eliminated.

In the prior art, there is an anchor bolt as shown in FIG. 2, which is composed of a nut 10, a screw 20 and at least two expansion members 30. The screw 20 has a threaded section 210 and a bolt head 220, and the nut 10 is screwed on the threaded section 210. The plurality of expansion members 30 are disposed one by one on the threaded section 210 of the screw 20, and the same end of each expansion member 30 forms a plurality of expansion sheets 310, and the other end corresponding to the adjacent expansion sheets 310 forms a wedge surface 320. The nut 10 or the screw 20 may also form a wedge-shaped surface corresponding to the expansion sheet 310.

During installation, a plurality of expansion members 30 are placed on the threaded section 210 of the screw 20, and the nut 10 is screwed onto the threaded section 210 of the screw 20, and the external object is placed at the position of the screw 20 against the bolt head 220. Then, the nut 10 is turned inward, inserted into the pre-drilled wall hole together with the expansion member 30, the screw 20, the screw 20 is tightened, or the bolt head 220 is turned inward, and the pre-drilled together with the expansion member 30 and the screw 20 are inserted. In the wall hole, the nut 10 is tightened, so that the expansion piece 310 is expanded under the guidance of the wedge surface 320, and the inner wall of the wall hole is tightly grasped, so that the entire anchor bolt is fixed in the wall hole to reach the external object. Fixed for the purpose of the building.

Due to the increase of the expansion member 30, the anchor bolt multiplies the number of the expansion sheets 310, and the contact surface with the wall holes is doubled, and the gripping force is greatly improved. Therefore, the fixing effect is good, and it has been widely used in construction.

However, such an anchor needs to be sleeved with a plurality of expansion members 30, and each expansion member 30 must form an expansion sheet 310 and a wedge surface 320. The nut 10 or the screw 20 also forms a wedge surface corresponding to the expansion sheet 310. There are many disadvantages such as many components, complicated structure, and troublesome processing and production.

In view of this, the inventors have developed a new type of anchor bolt to simplify the structure, reduce the components, facilitate processing, and effectively anchor, and the present invention is produced.

发明内容Summary of the invention

The object of the present invention is to provide an anchor bolt which has good anchoring effect, has few components, simple structure, and is simple and convenient to manufacture.

An anchor bolt is composed of a nut, a screw and an expansion member; the outer end of the screw has a threaded section and the inner end has a bolt head; the expansion member has a tubular shape, and a plurality of rows of the tube wall are radially opened to guide the expansion member to undergo expansion deformation. An expansion hole, an expansion piece is formed between adjacent expansion holes of each row, the expansion member is sleeved on the screw, and the inner end is abutted on the bolt head; the nut is screwed on the thread segment and is abutted on the outer end of the expansion member .

Wherein, the expansion hole on the expansion member is an axial elongated hole.

Both ends of the expansion hole form a flare that facilitates deformation of the expansion sheet.

The expansion piece of the expansion member is provided with an aperture that facilitates deformation of the expansion piece.

The inner end of the expansion member extends to form a positioning bar, and the positioning bar is bent to form a positioning hook, and the positioning hook is hooked on the bolt head of the screw.

The expansion member is formed by curling a sheet of material, and the sheet is punched with an expansion hole, an expansion sheet, a small hole and a positioning strip.

A positioning groove corresponding to the expansion member and a positioning hook are formed on the side wall of the bolt head of the screw, and the positioning bar and the positioning hook are located in the positioning groove.

A threaded washer is placed on the threaded section of the screw and the nut is screwed.

The bolt head is integrally formed on the screw.

The bolt head and the screw are separately formed, and the bolt head is fixed on the screw.

After the above structure is used, when the invention is installed, the wall is drilled, the expansion member is placed on the screw, and the bolt head of the screw is inserted into the pre-drilled wall hole, and then the external object is hung on the wall. On the screw, finally, the nut is screwed on the threaded section of the screw, so that the expansion member is deformed at the expansion hole and the expansion piece, the expansion piece expands to the periphery, and the inner wall of the wall hole is tightly grasped, so that the entire anchor The bolt is fixed in the wall hole to achieve the purpose of fixing the external object to the building.

The invention has a plurality of rows of expansion sheets, so that the contact surface of the expansion member and the wall hole is doubled, and the gripping force is greatly improved, so the fixing effect is good. Moreover, the present invention replaces a plurality of expansion members of the prior art by a tubular expansion member having a plurality of rows of expansion sheets at the same time, the member is greatly reduced, the structure is simplified, the processing is simple and convenient, and in particular, the sheet is curled into a tubular shape. At this time, since the expansion hole, the expansion sheet, the small hole, and the positioning bar can be directly formed on the sheet, it is easier to process.

附图说明DRAWINGS

Figure 1 is a schematic structural view of a conventional building anchor;

Figure 1-1 is a schematic diagram of the invalid anchoring when the traditional building anchor bolt is applied to the hollow brick body;

2 is a schematic structural view of a conventional building anchor;

Figure 3 is a schematic view of the structure of the present invention;

Figure 4 is an exploded perspective view of the present invention;

Figure 5 is a developed perspective view of the expansion member of the present invention;

Figure 6 is a schematic illustration of the effective anchoring of the present invention when applied to a hollow tile body.

Label description

Nut 100

Screw 200 wedge head 201

Expansion member 300 expansion sheet 301

Nut 10

Screw 20 threaded section 210

Bolt head 220

Expansion member 30 expansion sheet 310

Wedge 320

Nut 1

Screw 2 threaded section 11

Bolt head 22 positioning groove 23

Expansion member 3 expansion hole 31

Expansion piece 32 small hole 33

Positioning bar 34 positioning hook 35

Flared 36

Washer 4

具体实施方式detailed description

3 and 4, which is a preferred embodiment of the present invention, consists of a nut 1, a screw 2 and an expansion member 3.

The outer end of the screw 2 has a threaded section 21 and the inner end has a bolt head 22. The bolt head 22 may be integrally formed on the screw 2 or may be fixed to the screw 2 after being separately formed from the screw 2.

The expansion member 3 has a tubular shape, and the tube wall has a plurality of rows of expansion holes 31 for guiding the expansion deformation of the expansion member 3 in the radial direction. In this embodiment, the expansion holes 31 are axially elongated holes. An expansion piece 32 is formed between adjacent expansion holes 31 of each row. In order to facilitate deformation of the expansion piece 32, the expansion piece 32 is further provided with a small hole 33, and a flare 36 is formed at both ends of the expansion hole 31. The expansion member 3 is placed on the screw 2, and the inner end is abutted against the bolt head 22. In order to allow the expansion member 3 to be rapidly expanded after being squeezed, and to prevent the expansion member 3 from rotating relative to the screw 2, the inner end of the expansion member 3 further extends to form a positioning strip 34, and the positioning strip 34 is bent to form a positioning hook 35, and the positioning hook 35 Hook on the bolt head 22 of the screw 2. Moreover, in this embodiment, the positioning bar 34 and the positioning hook 35 of the expansion member 3 on the side wall of the bolt head 22 of the screw 2 are provided with positioning grooves 23, and the positioning bar 34 and the positioning hook 35 are located in the positioning groove 23, so that the expansion member 3 The inner end is fixed to the bolt head 22 of the screw 2, and the expansion effect is better. In order to facilitate the processing, as shown in FIG. 5, the expansion member 3 of this embodiment is formed by crimping a sheet of material, and the sheet is punched with an expansion hole 31, an expansion sheet 32, a small hole 33, and a positioning strip 34.

The nut 1 is screwed onto the threaded section 21 of the screw 2 and abuts against the outer end of the expansion member 3. For more reliable assembly, this embodiment first places a washer 4 on the threaded section 21 and then screws the nut 1.

When the invention is installed, the wall is bored, the expansion member 3 is first placed on the screw 2, and the bolt head 22 of the screw 2 is inserted into the pre-drilled wall hole, and then the external object is hung on the wall. On the screw 2, the washer 4 is placed on the screw 2, and finally, the nut 1 is screwed onto the threaded section 21 of the screw 2. When the screw 2 is tightened, the expansion member 3 is pressed, and deformation is formed at both ends of the expansion hole 31, and the plurality of rows of the expansion sheets 32 are outwardly extended, especially under the guidance of the small holes 33 and the flares 36, and are expanded. The piece 32 is expanded to the periphery, and the inner wall of the wall hole is tightly grasped, so that the entire anchor bolt is fixed in the wall hole to achieve the purpose of fixing the external object to the building.

As shown in FIG. 6, when the present invention is applied to a hollow brick body, after each row of the expandable sheets 32 are slid together, a part of the expandable sheet 32 will always fall outside the cavity, so that the portion of the expandable sheet 32 and the hollow brick are The effective contact of the solid portion of the body ensures the effectiveness of the present invention for anchoring within the hollow brick.

The above description is only one embodiment of the present invention, and is not a limitation on the design of the present case. Any equivalent changes made according to the design key of the present case fall within the scope of protection of the present case.

Claims

1. An anchor bolt consisting of a nut, a screw and an expansion member; the outer end of the screw has a threaded section and the inner end has a bolt head; and the expansion member has a tubular shape, and the tube wall has a plurality of rows of radial openings. An expansion hole in which the expansion member is expanded and deformed, an expansion piece is formed between adjacent expansion holes of each row, the expansion member is sleeved on the screw, and the inner end is abutted on the bolt head; the nut is screwed on the thread segment, and the nut is pressed against On the outer end of the expansion member.

2. An anchor according to claim 1 wherein the expansion aperture in the expansion member is an axially elongated aperture.

3. An anchor according to claim 1, wherein both ends of said expansion hole form a flare which facilitates deformation of the expansion piece.

4. An anchor according to claim 1, wherein the expansion piece of the expansion member is provided with an aperture for facilitating deformation of the expansion piece.

The anchor bolt according to claim 1 or 4, wherein the inner end of the expansion member extends to form a positioning bar, and the positioning bar is bent to form a positioning hook, and the positioning hook is hooked on the bolt head of the screw. .

6. An anchor according to claim 5, wherein the expansion member is formed by crimping a sheet of material, and the sheet is punched with an expansion hole, an expansion sheet, a small hole and a positioning strip.

The anchor bolt according to claim 5, wherein the positioning rod and the positioning hook of the expansion head corresponding to the side wall of the bolt head of the screw are provided with positioning grooves, and the positioning bar and the positioning hook are located in the positioning groove. .

8. An anchor according to claim 1, wherein a threaded section of the screw is first placed with a washer and then a nut is screwed.

9. An anchor according to claim 1 wherein said bolt head is integrally formed on the screw.

10. An anchor according to claim 1 wherein said bolt head is formed separately from the screw and the bolt head is fixed to the screw.