JP3005716U - Anchor bolt for wall - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an anchor bolt for walls which has a high bonding strength and can withstand a relatively large impact force. [Structure] Mainly composed of one bolt, one expansion part, one conical tube, one cylinder, one nut, the expansion part is fitted to the left end of the bolt, and the conical tube is the expansion part. Provided on the right side of the part, the cylinder provided on the right side of the conical tube,
Each of these components is fixed to the rightmost end of the bolt by tightening a nut, the expansion component is a circular tubular body, and its left end is in contact with a head slightly larger in diameter than the bolt body provided at the left end of the bolt. The right end of the expansion member is formed of several expansion pieces, and the front end of the expansion piece is gradually reduced to be a pointed shape, and the conical tube contacts the expansion part at one end having a smaller diameter. It is characterized by

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a type of wall anchor bolt, and more particularly to a wall anchor bolt having a high bonding strength and capable of withstanding a comparatively large impact force.

[0002]

[Prior art]

 Conventionally, a commonly used wall anchor bolt is generally composed of a bolt, a cylinder, and a nut, as shown in FIG. The cylinder is fitted outside the cylinder of the bolt, a screw is fitted to one end of the bolt, and the front end of the bolt has a truncated cone shape with a gradually increasing diameter, and one end corresponding to the front end of the bolt of the cylinder. A groove is provided in the axial direction. When using the wall, first drill a wall, make a circular hole that is approximately the size of one bolt, put the wall anchor bolt in it, and rotate the nut at the end of the bolt to rotate it, and Move the cylinder in one direction. Since the front end of the cylinder is provided with several axial grooves, the front end of the cylinder appears to be open under the pressure of the frustoconical portion of the bolt, as well as the inner wall of the tight circular hole. Bite in and secure the wall anchor bolts to the wall.

[0003]

[Problems to be solved by the device]

 The conventional wall anchor bolts as described above have the following drawbacks due to their forward direction pushing method: (a) Insufficient bonding strength: Currently, a construction company arrives. By the way, although they are forested, the construction quality of each company does not match. Therefore, due to poor construction quality, the wall or mortar strength may be insufficient, resulting in brittleness or powdery appearance. Alternatively, the aged building mortar may be aged or weathered. If the conventional forward push-in type wall anchor bolt is used for this, the wall cannot withstand the pressure of the expansion part at the front end of the wall anchor bolt, the mortar breaks and the hole widens, and the wall anchor The bolt did not fall off and could not penetrate into the wall, and could not perform its original function. (B) Being unable to withstand a large impact force: The conventional wall anchor bolt has a cylindrical front end. It used the effect of expansion to expand and bite it in a circular hole made in the wall, thus fulfilling the purpose of fixing the position. The effect was to hang and support the article mostly statically. However, when a relatively large impact force or an acting force perpendicular to the wall anchor bolt is received, the force often becomes larger than the force and frictional force on the wall of the circular hole at the front end of the cylinder, and There was a situation where the anchor bolt slipped out of the wall.

Due to the above-mentioned drawbacks of the conventional wall anchor bolts, the present invention provides a kind of wall anchor bolt having a high coupling strength, stable bite, and relatively large impact force. Is an issue.

[0005]

[Means for Solving the Problems]

 The present invention mainly comprises one bolt, one expansion part, one conical tube, one cylinder, one nut, the expansion part is fitted to the left end of the bolt, and the conical tube is A wall anchor that is provided adjacent to the right side of the expansion part, the cylinder is provided adjacent to the right side of the conical tube, and each of these components is fixed by fastening the nut to the rightmost end of the bolt. The expansion part is a circular tubular body, the left end of which is provided so as to come into contact with a head having a diameter slightly larger than the bolt main body provided at the left end of the bolt, and the right end of the expansion member includes several expansion pieces. The conical tube adjacent to the right side of the expansion member is in contact with the expansion member at one end having a smaller diameter.

[0006]

[Action]

 The wall anchor bolt of the present invention mainly consists of one bolt, one expansion part, one conical tube, one cylinder and one nut, and each component is mainly on the cylinder of the bolt. They are installed by fitting, and from the left to the right, the expansion part, the conical tube, the cylinder, and finally the rightmost end of the bolt is tightened with a nut, and each component is tightly coupled and integrated. Due to such a combination method, the wall anchor bolt of the present invention has a high coupling strength, penetrates strongly into the wall, and can withstand a relatively large impact force as compared with the conventional general wall anchor bolt. It is characterized by being able to do it.

[0007]

【Example】

 FIG. 2 is a three-dimensional view of the wall anchor bolt of the present invention. The present invention mainly consists of one bolt (1), one expansion part (2), one conical tube (3), one cylinder (4) and one nut (5). The extension part (2) is fitted on the left end of the bolt (1), and the conical tube (3) is provided on the right side of the extension part (2). The cylinder (4) is provided on the right side of the conical tube (3). Further, each of these constituent parts is fixed on the bolt (1) by utilizing the fitting of the screw of the nut (5). Thus, the entire shape of the present invention is formed.

FIG. 3 is an exploded perspective view of the present invention. At the left end of the bolt (1), a circular head (11) having a diameter larger than the main body is provided, and this is used to prevent the expansion component (2) from falling off the bolt (1). A male screw (12) is cut on the cylinder at the other end of the bolt (1), and this is used for screw fitting with the nut (5). First, the nut (5) is cut with an internal thread (5) corresponding to the external thread (12). The extension part (2) is a circular tubular body, the inner diameter of which is equal to the outer diameter of the bolt (1). The right end of the extension part (2) is composed of three extension pieces (21). Moreover, the front end of the expansion piece (21) is gradually reduced in size and sharpened. Its purpose is to increase the contact force with the wall. The inner diameter of the conical tube (3) is the same as the outer diameter of the bolt (1). However, the outer diameter of the conical tube (3) is gradually increased toward the left end so as to have a conical shape. The purpose is to allow the expansion piece (21) at one end of the expansion part (2) to expand outwards due to the conicity of the conical tube (3).

At the time of combination, the expansion part (2) is fitted to the bolt (1) so that the expansion part (21) is provided at one end of the head (11) and on the right side of the bolt (1). Fit the conical tube (3) onto the bolt (1) so that it is adjacent to the expansion member (2). At this time, one end of the conical tube (3) having a smaller size is adjacent to the expansion piece (21). A cylinder (4) is provided adjacent to the right side of the conical tube (3). The length, or number, of the cylinders (4) can be increased or decreased depending on the actual demand. Thereby, the opening degree of the expansion piece (21) is adjusted. The nut (5) is provided on the rightmost side of the bolt (1) by fitting the screw.

In use, the wall is excavated to drill a circular hole with one outer diameter equal to the larger outer diameter of the conical tube (3). Further, the wall anchor bolt is placed in the circular hole, and the nut (5) is rotated to press the conical tube (3) to move it to the left side. This causes the expansion piece (21) to expand outwardly according to the conicity of the conical tube (3) (as shown in Figure 4). In addition, the end of the expansion piece (21) is inserted into the wall of the circular hole, so that the wall anchor bolt is stably fixed to the wall. When the expansion piece (21) is subjected to an extremely large impact force to open toward the opening of the circular hole, the tip portion of the expansion piece (21) firmly bites into the hole wall in the circular hole. Prevents the wall anchor bolts from falling off the wall.

FIG. 5 shows another embodiment of the present invention. This is performed when, in actual use, due to the condition of the wall and the difference in the fixed object, it is necessary to have a larger binding force and a stronger biting force than those in the above-mentioned embodiment and to receive a large impact force. It In this example, the bolt (1) is fitted with two extensions (2), two conical tubes (3) and two cylinders (4). As a result, the wall anchor bolt of the present invention can withstand a larger impact force.

As can be seen from the above description, the wall anchor bolt of the present invention has an effect that cannot be achieved by the conventional wall anchor bolt, and has a practical structure applicable to a wide range. Have.

[0013]

[Effect of device]

 The present invention has the following effects: (a) When the expansion piece is pressed into the conical tube and opened when the expansion piece is pressed into the wall and stably stabs into the wall, the front end of the expansion piece is slightly inclined. In accordance with the above, it bites into the wall of the circular hole and presses the wall of the circular hole tightly. Due to such a double action, the wall anchor bolt can be coupled to the tight wall, and it is possible to withstand a relatively large impact force, which does not easily fall off. As can be seen from the above description, when the wall anchor bolt of the present invention is used, the expansion piece bites into the wall of the circular hole, that is, the wall, and the foundation bolt has a relatively large impact force or bolt. When subjected to the same direction of force, the end of the bolt pushes the expansion part toward the opening of the circular hole, so that the expansion piece follows the inclination of the conical tube and further penetrates deeply into the wall of the circular hole. This is because it is more difficult for the wall anchor bolt to fall off the wall.

[Brief description of drawings]

FIG. 1 is a perspective view of a conventional wall anchor bolt.

FIG. 2 is a perspective view of the wall anchor bolt of the present invention.

FIG. 3 is an exploded perspective view of the wall anchor bolt of the present invention.

FIG. 4 is a cross-sectional view showing a state in which the wall anchor bolt of the present invention is connected to the inside of a wall.

FIG. 5 is a cross-sectional view showing a state in which a wall anchor bolt according to another embodiment of the present invention is connected to a wall.

[Explanation of symbols]

1 Bolt 11 Head 12 Male screw 2 Expansion part 21 Expansion piece 3 Conical tube
4 Cylindrical 5 Nut 51 Female thread

Claims (1)

[Scope of utility model registration request] 1. Mainly, one bolt, one extension part,
Consists of one conical tube, one cylinder, one nut,
The expansion part is fitted to the left end of the bolt, the conical tube is provided so as to be adjacent to the right side of the expansion part, and the cylinder is provided so as to be adjacent to the right side of the conical tube. , A wall anchor bolt in which a nut is tightened and fixed to the rightmost end of the bolt, the expansion part is a circular tubular body, and the left end thereof is a head having a diameter slightly larger than the bolt body provided at the left end of the bolt. The right end of the expansion member is formed by several expansion pieces, the front end of the expansion piece is gradually reduced to be a pointed shape, and the conical tube adjacent to the right side of the expansion piece has a small diameter. An anchor bolt for walls, which is in contact with the extension part at one end thereof.