JP2005194832A - Anchor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anchor capable of keeping a secure fixing state of a mounting member when a brick body weakened due to secular change or an other member made of ALC, a resin, etc. are fixed with other members. <P>SOLUTION: The anchor is constituted of a bolt 3 provided in the base end side, a fixing means provided at the front end side axis, a collar 6 provided between the bolt 3 and the fixing means, and a nut screwed with the bolt 3. Further, a reaction support part 8A for adding a fastening torque to the nut is provided. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an anchor used for fixing other members to a casing, and particularly used when fixing other members to a brick casing weakened by secular change, ALC, a casing made of resin, or the like. It relates to a suitable anchor.

In the case of fixing other members to a brick casing weakened by secular change, ALC, a casing made of resin, etc., special anchors combined in combination with metal, plastic, metal and plastic, etc. Adhesive anchors are used.
The types of anchors include screw-type anchors that obtain a fixing force by expanding a main body by screwing bolts or wood screws after inserting a resin or metal plug main body into a hole previously drilled in the housing. , Driving-type anchors that expand the plug body by driving an extension pin into the plug body inserted into the hole with a hammer or the like, or screws that screw the body into the housing and obtain the fixing force by biting the thread Fixed anchor, type that anchor strength can be obtained when adhesive anchor anchor muscle is inserted after filling capsule type or injection type adhesive into hole previously drilled in housing, etc. There is.

In the above-described screw-fixed anchor, for example, as disclosed in Patent Document 1, it is a retrofitting metal fitting used to attach an attachment member to an attachment portion of a housing, and is engaged with the attachment portion of the housing provided on the distal end side. The engaging part, a bolt part provided on the rear end side, a flange part provided between the engaging part and the bolt part, and a nut screwed to the bolt part are provided. The engaging portion may be a screw or a non-circular cross section.
When attaching a member to be attached to the mounting part of the housing using this retrofitting metal fitting, it is done by fixing the engaging part of this metal fitting to the mounting part of the housing, but when the metal fitting is screwed or nailed, The flange portion is in contact with the surface of the mounting portion for fixing and positioning. The mounting member is applied to the bolt portion provided on the rear end side of the fixed bracket through the mounting hole of the mounting member, and then the nut is screwed onto the bolt. In other words, the attachment member can be sandwiched and attached.
Japanese Utility Model Publication No. 6-14526

The above-mentioned retrofitting metal fitting is composed of a hook part provided between an engaging part and a bolt part fixed by screwing or nailing to the case, and a nut screwed to the bolt part on the rear end side. When the housing is a brick housing weakened due to secular change, or a housing made of ALC, resin, etc., when tightening the nut to sandwich the mounting member The tightening torque applied to the nut sometimes breaks the fixed portion between the housing and the engaging portion.
Also, in order not to break the fixed part between the housing and the engaging part, if the necessary tightening torque is not applied to the nut, the necessary axial force will not be generated on the bolt. May be loosened, and there is a risk that the fixed state of the attachment cannot be maintained.
This is because the reaction force when the nut is rotated and the tightening torque is applied cannot be sufficiently received by the fixing portion between the housing and the engaging portion.

  The present invention has been made in view of the above circumstances, and even when other members are fixed to a brick housing weakened due to secular change, ALC, resin, or the like, the mounting member is securely fixed. It is an object of the present invention to provide an anchor that can maintain the resistance.

In order to achieve the above object, the present invention proposes the following means.
The first of the solving means is a bolt part provided on the base end side, a fixing means provided on the distal end side shaft part, a flange part provided between the bolt part and the fixing means, and the bolt And a reaction force receiving portion for applying a tightening torque to the nut.
According to a second aspect of the present invention, the reaction force receiving portion is a concave portion and / or a convex portion provided at an end portion of the bolt portion.
According to a third aspect of the present invention, the reaction force receiving portion is a hole or groove provided at an end portion of the bolt portion.
A fourth means of the present invention is characterized in that the reaction force receiving portion is a polygonal head provided at the end of the bolt.
A fifth means for solving the present invention is characterized in that the reaction force receiving portion is provided in the collar portion.
Sixth of the solving means is that the fixing means includes at least one continuous high screw thread formed circumferentially on the surface of the tip side shaft portion, and a tip side shaft portion between the high screw threads in the circumferential direction. It is characterized by comprising at least one continuous low screw formed on the surface.
A seventh solving means is characterized in that the adhering means is provided with a circumferential groove on the surface of the tip side shaft portion.
Eighth of the solving means is characterized in that the fixing means is provided with concave portions and / or convex portions dispersed on the surface of the tip side shaft portion.
Ninth of the solving means is characterized in that the adhering means comprises an expansion element at the distal end side shaft portion.
The tenth solving means is characterized in that an adhesive is filled in the gap between the anchor fixing means and the housing.
The eleventh of the solving means has a portion in which the adhesive fixing means is screwed into the housing and the space between the hole drilled in the housing and the inner wall surface of the hole is filled with adhesive, and the portion is fixed by hardening of the adhesive. It is characterized by that.

  Since the anchor of the present invention is provided with a reaction force receiving portion for applying a tightening torque to the nut at the bolt portion or the collar portion, the brick housing which has become weak due to secular change, a housing made of ALC, resin, etc. When fixing other members, the fixing part between the fixing means and the housing will not be destroyed, and the necessary tightening torque can be applied to the nut, generating axial force on the bolt part. Therefore, the mounting member can be securely fixed.

An embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a partially cutaway sectional view showing an anchor of the present invention, FIG. 2 is a side view showing a state in which the nut of the anchor shown in FIG. 1 is removed, and FIGS. 3 to 5 use the anchor of the present invention. FIG. 6 is a partially cutaway sectional view showing another embodiment of the present invention.

  As shown in FIGS. 1 and 2, the anchor 1 of the present invention includes a bolt portion 3 provided on the base end side 2, a fixing means 5 provided on the distal end side shaft portion 4, the bolt portion 3, and the It is comprised from the collar part 6 provided between the adhering means 5, and the nut 7 screwed together by the said bolt part 3. As shown in FIG. The flange portion 6 is integrally formed between the bolt portion 3 and the distal end side shaft portion 4.

  The fixing means 5 is formed in a double thread shape in which high threads 10 and low threads 11 are spirally provided on the surface of the distal end side shaft portion 4, or in FIG. An extension element is formed on the distal end side shaft portion 4, which is formed in a single thread shape with a thread 21 having a constant height as shown, an anchor bar for an adhesive anchor such as a deformed steel bar, or the like. There is something to have.

  The deformed steel bar and the entire screw bolt are of a type that can be fixed by inserting a capsule-type or injection-type adhesive into a hole previously drilled in the housing, and then hardening the adhesive. Further, the surface of the distal end side shaft portion 4 as shown in FIG. 1 is formed in a double thread shape in which a high thread 10 and a low thread 11 are alternately provided spirally, as shown in FIG. Even in the case of a single thread having a thread 21 of the same height, a hole 17 drilled in the housing 13 (see FIGS. 3 to 5) to a diameter larger than the outer diameter of the anchor 1. Alternatively, an adhesive may be filled in a gap between the inner wall surface 17a and the fixing means 5 of the anchor 1, and the adhesive may be cured to obtain an adhesive force to be fixed.

  In the case where the distal end side shaft portion 4 has an expansion element, the gap between the inner wall surface 17a of the hole 17 drilled in the housing 13 and the anchoring means 5 of the anchor 1 is filled with an adhesive. By expanding the expansion element, it is possible to receive an initial load at the expansion element at the tip and receive a final load as a so-called adhesive anchor 1 by curing the adhesive filled in the gap. The attachment can be immediately attached, and the overall strength of the anchor 1 can be increased. In addition, there is no limitation in particular as an expansion element, For example, a well-known structure, such as an expansion part of the structure employ | adopted with the screw-in type or drive-in anchor mentioned above, is applicable.

One formed with a double thread shape in which a high thread 10 and a low thread 11 are spirally provided on the surface of the distal end side shaft portion 4 or a thread 21 having the same height. In the case of what is formed in a screw shape, a hole having a diameter larger than the outer diameter of the anchor 1 and a depth of about ½ of the entire length of the anchor 1 is drilled in the housing 13. A hole having a diameter slightly smaller than the outer diameter of the anchor 1 and a depth of about ½ of the entire length of the anchor 1 is drilled in the back to form a two-stepped hole.
Next, the anchor 1 is inserted into the hole, and the screw portion on the distal end side of the anchor 1 is screwed and fixed into a hole having a smaller diameter than the anchor 1 formed on the inner side of the housing 13, and then the remaining screw portion on the rear end side is fixed. By filling the gap between the hole and the inner wall surface with an adhesive, the gap between the screw portion, which is the fixing means 5 of the anchor 1, is screwed into and fixed to the housing 13 and the inner wall surface of the hole drilled in the housing 13. And a portion that is filled with an adhesive and is fixed by curing of the adhesive.

By adopting the fixing structure as described above, the initial load is received by the screwed fixing portion of the screw portion on the front end side, and the ultimate load is received as the so-called adhesive anchor 1 by the remaining screw portion on the rear end side. It is possible to attach the attachment immediately after the anchor 1 is constructed, and it is possible to increase the overall proof stress as the anchor 1.
As shown in FIG. 6, when the thread 21 is formed in a sharp shape up to the forefront of the anchor 1, the thread 21 on the distal end side of the anchor 1 is provided only by providing the first stage hole instead of the second stage hole. Can be screwed in.

  Further, when the adhesive is filled into the hole into which the anchor according to the present invention is inserted, the opening of the hole is covered by the seating surface 14 of the flange part 6, so that the adhesive filled in the hole leaks. Can be prevented.

  The bolt portion 3 is formed with a reaction force receiving portion 8A capable of obtaining a reaction force when the nut 7 is rotated to apply a tightening torque. As the reaction force receiving portion 8A, for example, a cross hole 15 (see FIG. 2) that opens to the end surface of the bolt portion 3, a hole (wrench hole) such as a hexagonal hole or a square hole, and a minus that opens to the end surface of the bolt portion 3. It is a groove, a polygonal head 16 such as a quadrangle or a hexagon. In addition, when the adhering means 5 has a screw shape, the above-described reaction force receiving portion 8A can be used as a rotational force transmitting means for screwing the anchor 1 into the housing 13.

  Further, a reaction force receiving portion 8B that can obtain a reaction force when the nut 7 is rotated to apply a tightening torque may be formed in the flange portion 6 (see FIGS. 6 and 7). The reaction force receiving portion 8B may be in any shape as long as the anchor can be fixed (stopped) with a tool or the like with respect to the tightening torque of the nut 7, and is not limited to the shape in the illustrated example. For example, a concave portion or a convex portion formed on the attachment member fixed by the anchor is used to engage the reaction force receiving portion 8B, and the attachment member itself fixes the anchor against the tightening torque of the nut 7 (rotation prevention) It is also possible to function as a tool.

  Hereinafter, an example of the procedure for constructing the anchor 1 of the present invention shown in FIG. 1 on the housing 13 will be described with reference to FIGS. First, as shown in FIG. 3, a hole 17 is formed by drilling at a specified position of the housing 13 to a predetermined diameter and depth, and chips and the like generated in the hole 17 are removed. Furthermore, as shown in FIG. 4, the anchoring means 5 of the anchor 1 is screwed into a hole 17 provided in the housing 13 in advance, and when the seating surface 14 of the collar portion 6 of the anchor 1 comes into contact with the housing surface 13A, the screwing is finished. The mounting member 18 is applied to the housing surface 13A through the mounting hole 19 of the mounting member 18 through the bolt portion 3 of the anchor 1 protruding from the housing surface 13A. Next, as shown in FIG. 5, in a state where the reaction force receiving portion 8A provided on the bolt portion 3 is fixed with a tool such as a screwdriver or a hexagon wrench (not shown), the nut 7 is rotated and the attachment member 18 is fixed. The construction is complete. Accordingly, it is possible to prevent the inconvenience that the fixing portion between the fixing means and the casing is broken by the tightening torque to the nut 7 and to apply a necessary tightening torque to the nut 7. The member can be securely fixed.

  In the above embodiment, the reaction force receiving portion 8A is provided on the bolt portion 3 or the reaction force receiving portions 8A and 8B are provided on the bolt portion 3 and the flange portion 6. However, the reaction force receiving portion may be provided only on the collar portion 6.

It is a partially cutaway sectional view showing an anchor of the present invention. It is a side view which shows the state which removed the nut of the anchor shown in FIG. It is a work process figure which shows the procedure which performs an attachment operation | work using the anchor of this invention. It is a work process figure which shows the procedure which performs an attachment operation | work using the anchor of this invention. It is a work process figure which shows the procedure which performs an attachment operation | work using the anchor of this invention. It is a partially cutaway sectional view showing another embodiment of the present invention. It is a side view which shows the state which removed the nut of the anchor shown in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Anchor, 2 ... Base end part, 3 ... Bolt part, 4 ... Front end side shaft part, 5 ... Adhering means, 6 ... Gutter part, 7 ... Nut, 8A, 8B ... Reaction force receiving part, 10 ... High thread DESCRIPTION OF SYMBOLS 11 ... Low screw thread, 13 ... Housing, 13A ... Housing surface, 15 ... Cross hole, 16 ... Head, 17 ... Hole, 18 ... Mounting member, 19 ... Mounting hole.

Claims (11)

A bolt portion provided on the base end side;
Fixing means provided on the tip side shaft portion;
A collar provided between the bolt part and the fixing means;
It consists of a nut screwed into the bolt part,
An anchor having a reaction force receiving portion for applying a tightening torque to a nut. The anchor according to claim 1, wherein the reaction force receiving portion is a concave portion and / or a convex portion provided at an end portion of the bolt portion. The anchor according to claim 1 or 2, wherein the reaction force receiving portion is a hole or a groove provided at an end portion of the bolt portion. The anchor according to any one of claims 1 to 3, wherein the reaction force receiving portion is a polygonal head provided at an end portion of the bolt. The anchor according to claim 1, wherein the reaction force receiving portion is provided on the flange portion. The fixing means has at least one continuous high thread formed circumferentially on the surface of the tip side shaft portion;
The anchor according to any one of claims 1 to 5, comprising at least one continuous low screw formed on a surface of a distal end side shaft portion between the high threads in the circumferential direction. The anchor according to any one of claims 1 to 6, wherein the fixing means is provided with a circumferential groove on a surface of the distal end side shaft portion. The anchor according to any one of claims 1 to 7, wherein the fixing means is provided with concave portions and / or convex portions dispersed on the surface of the distal end side shaft portion. The anchor according to any one of claims 1 to 8, wherein the fixing means includes an expansion element at a distal end side shaft portion. The anchor according to any one of claims 1 to 9, wherein an adhesive is filled in a gap between the anchor fixing means and the housing. The adhesive is filled in a gap between a portion where the anchor fixing means is screwed and fixed to the housing and an inner wall surface of the hole drilled in the housing, and has a portion fixed by hardening of the adhesive. The anchor according to claim 1.

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