Post-installed anchor set and post-installed anchor installation method

Abstract

This invention provides a post-installed anchor set and a post-installed anchor installation method that are less likely to cause cracking or damage to the anchored object, even when the anchor is installed on a wooden object. [Solution] The device comprises a main body 2, a protruding portion 3, and a cylindrical body 4. The main body 2 is rod-shaped. The protruding portion 3 is provided at the tip of the main body 2 so as to be able to be positioned in a state where it protrudes laterally from the main body 2 and in a state where it is aligned with the main body 2. The cylindrical body 4 is provided so as to be able to push the protruding portion 3, which is aligned with the main body 2, into a state where it protrudes laterally from the main body 2 when the main body 2 is inserted into the cylindrical body 4 from the rear end of the main body 2.

Description

Technical Field

[0001] The present invention relates to a post-construction anchor set and a post-construction anchor construction method for construction.

Background Art

[0002] Conventionally, as a method for constructing a post-construction anchor, a first step of inserting an assembly in which a sleeve is extrapolated to the rear side of the tapered portion of a tapered bolt into a concrete hole, and a driving rod is used to strike the rear end of the sleeve, so that the tapered portion relatively enters the inside of the expanding piece, and the expanding piece is expanded. A second step, and a third step of extrapolating an attachment to the male screw portion of the tapered bolt protruding from the concrete, screwing a lock nut from the outside of the attachment to the male screw portion up to the tip side from the stepped portion, and tightening the lock nut until the dome washer is crushed. A method is disclosed (for example, see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the method for constructing a post-construction anchor described in Patent Document 1, when the rear end of the sleeve is struck with a driving rod, there is a risk of cracking or damage to the anchor installation target, and in particular, it cannot be applied when the anchor installation target is wooden.

[0005] The present invention has been made paying attention to such problems, and an object thereof is to provide a post-construction anchor set and a post-construction anchor construction method that are less likely to cause cracking or damage to the anchor installation target even when the anchor installation target is wooden.

Means for Solving the Problems

[0006] To achieve the above objective, the post-installed anchor set according to the present invention comprises an anchor body, an overhang, and a cylindrical body, wherein the anchor body is rod-shaped, the overhang is provided at the tip of the anchor body so as to be positionable in a state where it protrudes laterally from the anchor body and in a state where it is aligned with the anchor body, and the cylindrical body is provided so as to be able to push the overhang, which is aligned with the anchor body, into a state where it protrudes laterally from the anchor body when the anchor body is inserted into the cylindrical body from the rear end of the anchor body.

[0007] The post-installed anchor installation method according to the present invention is a post-installed anchor installation method using a post-installed anchor set according to the present invention, and is characterized by comprising: a hole forming step of forming an anchor installation hole that penetrates the insertion side and the penetration side in an anchor installation target having an insertion side and a penetration side; an anchor insertion step after the hole forming step of inserting the tip of the anchor body into the anchor installation hole from the insertion side with the protruding portion aligned with the anchor body and positioning the protruding portion on the outside of the penetration side; an extension step after the anchor insertion step of inserting the cylindrical body into the anchor installation hole from the insertion side and inserting the anchor body into the interior of the cylindrical body and pushing the protruding portion, which is aligned with the anchor body, to protrude laterally from the anchor body; a cylindrical body removal step after the extension step of removing the cylindrical body from the anchor installation hole; and an anchor fixing step after the cylindrical body removal step of fixing the anchor body to the anchor installation target with the protruding portion in contact with the penetration side. In the anchor fixing process, the anchor body may be fixed to the anchor installation target by filling the inside of the anchor installation hole with a binder while the protruding portion is in contact with the through-hole side.

[0008] In the post-installed anchor set and post-installed anchor installation method according to the present invention, the cylindrical body is inserted into the anchor installation hole from the insertion side, the anchor body is inserted inside, the protruding portion which is aligned with the anchor body is pushed out so that it protrudes laterally from the anchor body, and the anchor body can be fixed to the anchor installation target with the protruding portion in contact with the penetrating side, so that cracks or damage to the anchor installation target are less likely to occur even when the anchor installation target is made of wood.

[0009] In the post-installed anchor set according to the present invention, the overhang portion has a plurality of arm members and a net member, each arm member is provided so as to be positioned to extend laterally from the anchor body radially from the tip of the anchor body, and the net member is attached to the arm members and may extend between the arm members when each arm member is positioned to extend laterally from the anchor body. In this case, when filling the anchor installation hole with a binder to fix the anchor body to the object to be anchored, the binder can be applied to the net material to fix the protruding portion to the object to be anchored.

[0010] Another post-installed anchor set according to the present invention comprises an anchor body, an overhang, a cylindrical body, and a connecting member, wherein the anchor body is rod-shaped, the overhang is positioned at the tip of the anchor body in a state where it protrudes laterally from the anchor body and in a state where it is aligned with the anchor body, and has a biasing force that positions it in the state where it protrudes laterally from the anchor body, the cylindrical body is provided so that the anchor body can be inserted into it and removed from the rear relative to the anchor body, the connecting member connects the overhang and the cylindrical body and positions the overhang against the biasing force and aligned with the anchor body, and is provided so as to break the connection between the overhang and the cylindrical body when the cylindrical body is removed from the rear relative to the anchor body.

[0011] Another post-installed anchor installation method according to the present invention is a post-installed anchor installation method using another post-installed anchor set according to the present invention, characterized by comprising: a hole forming step of forming an anchor installation hole that penetrates the insertion side and the penetration side in an anchor installation target having an insertion side and a penetration side; an anchor insertion step after the hole forming step of inserting the tip of the anchor body together with the cylindrical body into the anchor installation hole from the insertion side with the protruding portion aligned with the anchor body and positioning the protruding portion on the outside of the penetration side; a cylindrical body removal step after the anchor insertion step of removing the cylindrical body from the rear of the anchor installation hole and cutting the connection between the protruding portion and the cylindrical body by the connecting material; a protruding step after the cylindrical body removal step of spreading the protruding portion, which is aligned with the anchor body, outwards from the anchor body by the biasing force; and an anchor fixing step after the protruding step of filling the inside of the anchor installation hole with a binder with the protruding portion in contact with the penetration side and fixing the anchor body to the anchor installation target.

[0012] In other post-installed anchor sets and other post-installed anchor installation methods according to the present invention, the tip of the anchor body, with the protruding portion aligned with the anchor body, is inserted into the anchor installation hole from the insertion side, along with the cylindrical body connected by the protruding portion and the connecting material, and the anchor body is inserted into the inside of the cylindrical body. The cylindrical body is then removed from the rear of the anchor installation hole, the connection between the protruding portion and the cylindrical body by the connecting material is cut, the protruding portion aligned with the anchor body is spread out laterally from the anchor body by biasing force, and the inside of the anchor installation hole is filled with a binder with the protruding portion in contact with the penetration side, thereby fixing the anchor body to the anchor installation target. As a result, even when the anchor installation target is made of wood, cracks and damage to the anchor installation target are less likely to occur. The protruding portion may be made of a shape memory alloy and may have the property of returning to a state where it protrudes laterally from the anchor body at the tip of the anchor body when heated above a predetermined temperature, even though it is initially aligned with the anchor body.

[0013] A further post-installed anchor installation method according to the present invention is a post-installed anchor installation method using a post-installed anchor set according to the present invention, comprising: a hole forming step of forming an anchor installation hole that penetrates the insertion side and the penetration side in an anchor installation target having an insertion side and a penetration side; a housing part forming step of forming a housing part on the inner surface of the anchor installation hole after the hole forming step that is capable of accommodating the protruding portion that protrudes laterally from the anchor body; and after the housing part forming step, inserting the tip of the anchor body into the anchor installation hole from the insertion side with the protruding portion aligned with the anchor body, and the protruding portion The invention is characterized by comprising: an anchor insertion step of positioning the anchor in a position facing the housing; an extension step of inserting the cylindrical body into the anchor installation hole from the insertion side after the anchor insertion step, inserting the anchor body into the interior of the cylindrical body, and pushing the protruding portion, which is aligned with the anchor body, to protrude laterally from the anchor body and position it in the housing; a cylindrical body removal step of removing the cylindrical body from the anchor installation hole after the extension step; and an anchor fixing step of fixing the anchor body to the anchor installation target with the protruding portion in contact with the inner surface of the housing after the cylindrical body removal step. In yet another post-installed anchor installation method according to the present invention, a housing is formed on the inner surface of the anchor installation hole, and the protruding portion that extends laterally from the anchor body is housed in the housing. Therefore, even when there is no space to position the protruding portion on the penetrating side of the object to be anchored, the post-installed anchor set can be installed. Furthermore, even when the object to be anchored is made of wood, it is less likely to cause cracking or damage to the object to be anchored. [Effects of the Invention]

[0014] According to the present invention, it is possible to provide a post-installed anchor set and a post-installed anchor installation method that are less likely to cause cracking or damage to the anchor installation target, even when the anchor installation target is made of wood. [Brief explanation of the drawing]

[0015] [Figure 1] A side view showing a post-installed anchor set according to an embodiment of the present invention. [Figure 2] It is a process explanatory drawing showing a post-construction anchor construction method after an embodiment of the present invention. [Figure 3] It is a process explanatory drawing showing a post-construction anchor construction method after another embodiment of the present invention. [Figure 4] It is a process explanatory drawing showing a post-construction anchor construction method after still another embodiment of the present invention. [Figure 5] It is a process explanatory drawing showing another example of the hole forming process of the post-construction anchor construction method shown in FIG. 4.

Mode for Carrying Out the Invention

[0016] Hereinafter, based on the drawings, the first to third embodiments of the present invention will be described. FIG. 1 shows a post-construction anchor set after the first embodiment of the present invention. FIG. 2 shows a post-construction anchor construction method after the first embodiment of the present invention. As shown in FIG. 1, the post-construction anchor set 1 has an anchor body 2, a projecting portion 3, and a cylindrical body 4. The anchor body 2 is a straight bar made of iron or stainless steel, and a male screw 2a is formed on the rear end side. The projecting portion 3 has a plurality of arm members 3a and a net member 3b. The arm member 3a is made of a plate material and can be opened and closed like an umbrella. One end is attached to the tip of the anchor body 2, and it is provided so as to be positioned in a state of protruding horizontally from the anchor body 2 radially around the tip of the anchor body 2 and in a state along the anchor body 2. The arm member 3a preferably opens to an angle of 60° to 80° when the state along the anchor body 2 is set to 0°. The arm member 3a is sharpened so that the free end can pierce an object. The net member 3b is attached to the arm member 3a and extends between the arm members 3a when each arm member 3a is positioned in a state of protruding horizontally from the anchor body 2.

[0017] The cylindrical body 4 is cylindrical in shape, has a bulge 4a around its tip, and a flange 4b ​​at its rear end. The bulge 4a gradually widens from the tip to the rear end. The flange 4b ​​is plate-shaped and perpendicular to the length of the cylindrical body 4. The cylindrical body 4 is designed to allow the anchor body 2 to be inserted into it and to be removed from the rear of the anchor body 2. The cylindrical body 4 is designed to allow the protruding portion 3, which is aligned with the anchor body 2 when the anchor body 2 is inserted into it from the rear end, to be pushed out laterally from the anchor body 2.

[0018] In the post-installed anchor installation method of the first embodiment of the present invention, the post-installed anchor set of the first embodiment of the present invention is used. First, as shown in Figure 2(A), an anchor installation hole 6 is formed in the anchor installation target 5, which has an insertion side 5a and a penetration side 5b, passing through the insertion side 5a and the penetration side 5b (hole formation step). The anchor installation target 5 can be a reinforced concrete or wooden wall, column, beam, etc., but other targets may also be used. The insertion side 5a and the penetration side 5b of the anchor installation target 5 are usually opposite sides parallel to each other, but they do not necessarily have to be parallel to each other. The anchor installation hole 6 can be formed using an electric drill D or the like. After forming the anchor installation hole 6, the internal debris is sucked up with a suction device, cleaned with a blower, brushing, etc., and the length of the hole is measured. The inside of the anchor installation hole 6 is checked with an endoscope.

[0019] Hole formation process: As shown in Fig. 2(B), with the overhanging portion 3 along the anchor body 2, insert the tip of the anchor body 2 into the anchor installation hole 6 from the insertion side 5a, and position the overhanging portion 3 outside the penetration side 5b (anchor insertion process). Marking 2b is made on the anchor body 2 at a location corresponding to the insertion opening of the anchor installation hole 6 at the anchor fixing position. As shown in Fig. 2(C), after the anchor insertion process, insert the tip of the cylindrical body 4 into the anchor installation hole 6 from the insertion side 5a to insert the anchor body 2 inside the cylindrical body 4, and expand the overhanging portion 3 in a state along the anchor body 2 to a state of protruding laterally from the anchor body 2 (overhanging process). Further, screw the nut 7 onto the male thread 2a of the anchor body 2, and press the flange 4b of the cylindrical body 4 with the male thread 2a to firmly expand the overhanging portion 3.

[0020] As shown in Fig. 2(D), after the overhanging process, remove the nut 7 from the male thread 2a of the anchor body 2, and remove the cylindrical body 4 from the anchor installation hole 6 (cylindrical body 4 removal process). After the cylindrical body 4 removal process, bring the arm material 3a of the overhanging portion 3 into contact with the penetration side 5b, and in a state of biting into the penetration side 5b of the anchor installation target 5, fill the inside of the anchor installation hole 6 with a binder 8 made of a synthetic resin adhesive to fix the anchor body 2 to the anchor installation target 5 (anchor fixing process). Further, insert the anchor body 2 into the insertion hole of the washer 9b having an insertion hole and a screw hole, and fix the washer 9b along the insertion side 5a of the anchor installation target 5 with a screw 9a inserted into the screw hole. Screw the tightening nut 10 onto the male thread 2a of the anchor body 2 to tighten the anchor body 2, firmly bite the arm material 3a of the overhanging portion 3 into the penetration side 5b of the anchor installation target 5, and fix the anchor body 2. When the binder 8 hardens, the construction of the post-construction anchor is completed.

[0021] In the post-construction anchor construction method, since the cylindrical body 4 can be inserted into the anchor installation hole 6 from the insertion side 5a to insert the anchor body inside, and the overhanging portion 3 in a state along the anchor body 2 can be expanded to a state of protruding laterally from the anchor body 2 and the anchor body 2 can be fixed to the anchor installation target 5 with the overhanging portion 3 in contact with the penetration side 5b, even when the anchor installation target 5 is made of wood, cracks and damage are unlikely to occur in the anchor installation target 5. Since the protruding portion 3 has multiple arm members 3a and net members 3b, when the anchor body 2 is fixed to the anchor installation target 5 by filling the inside of the anchor installation hole 6 with a binder 8, the binder 8 can be attached to the net members 3b and the protruding portion 3 can be fixed to the anchor installation target 5.

[0022] Figure 3 shows a post-installed anchor installation method according to a second embodiment of the present invention. In Figure 3, the same reference numerals are used for parts of the same type as in Figure 2, and redundant explanations are omitted. The post-installed anchor set 11 used in the post-installed anchor installation method of the second embodiment of the present invention has an anchor body 12, an overhang 13, a cylindrical body 14, and a connecting member 15. The anchor body 12 is a straight rod made of iron or stainless steel, with a male thread 12a formed on its rear end. The overhang 13 has a plurality of arm members 13a and a net member 13b. The arm members 13a are made of plate material, are openable and closable like an umbrella, and one end is attached to the tip of the anchor body 12 in a leaf spring-like manner. They are positioned so as to be positioned radially from the tip of the anchor body 12, extending laterally from the anchor body 12, and along the anchor body 12. The free end of the arm member 13a is pointed so as to be able to pierce an object. The net member 13b is attached to the arm members 13a and extends between each arm member 13a when each arm member 13a is positioned to extend laterally from the anchor body 12. The arm member 13a has a biasing force from a leaf spring that positions it in a state where it protrudes laterally from the anchor body 12.

[0023] The cylindrical body 14 is cylindrical in shape, has a bulge 14a around its tip, and a flange 14b at its rear end. The bulge 14a gradually widens from the tip to the rear end. The flange 14b is plate-shaped and perpendicular to the length of the cylindrical body 14. The cylindrical body 14 is provided so that the anchor body 12 can be inserted into it and removed from the rear of the anchor body 12. When the anchor body 12 is inserted into the cylindrical body 14 from its rear end, the protruding portion 13 that is aligned with the anchor body 12 can be pushed outwards from the anchor body 12 in a lateral direction. The connecting member 15 is made of iron wire and connects the protruding portion 13 and the cylindrical body 14, positioning the protruding portion 13 along the anchor body 12 against the biasing force of the leaf spring. The connecting member 15 is designed to sever the connection between the protruding portion 13 and the cylindrical body 14 when the cylindrical body 14 is pulled out from the rear relative to the anchor body 12.

[0024] In the post-installed anchor installation method of the second embodiment of the present invention, first, as shown in Figure 3(A), an anchor installation hole 6 is formed in the anchor installation target 5, which has an insertion side 5a and a penetration side 5b, passing through the insertion side 5a and the penetration side 5b (hole formation step). The anchor installation target 5 can be a reinforced concrete or wooden wall, column, beam, etc., but other targets may also be used. The insertion side 5a and the penetration side 5b of the anchor installation target 5 are usually opposite sides parallel to each other, but they do not necessarily have to be parallel to each other. The anchor installation hole 6 can be formed using an electric drill D or the like. After forming the anchor installation hole 6, the internal debris is sucked up with a suction device, cleaned with a blower, brushing, etc., and the length of the hole is measured. The inside of the anchor installation hole 6 is checked with an endoscope.

[0025] As shown in Figure 3(B), after the hole forming process, the tip of the anchor body 12 is inserted into the anchor installation hole 6 from the insertion side 5a together with the cylindrical body 14, with the protruding portion 13 aligned with the anchor body 12, and the protruding portion 13 is positioned outside the through-side 5b (anchor insertion process). A marking 12b is placed on the anchor body 12 at the location where the entire protruding portion 13 is positioned at the insertion opening of the anchor installation hole 6, with the through-side 5b of the anchor installation hole 6 protruding. As shown in Figure 3(C), after the anchor insertion process, the cylindrical body 14 is removed from the anchor installation hole 6 to the rear, and the connection between the protruding portion 13 and the cylindrical body 14 by the connecting member 15 is cut (cylindrical body removal process). After the cylindrical body removal process, the protruding portion 13, which was aligned with the anchor body 12, is spread out laterally from the anchor body 12 by the biasing force of the leaf spring (protrusion process). Furthermore, the tip of the cylindrical body 14 is inserted again into the anchor installation hole 6 from the insertion side 5a, and the anchor body 12 is inserted into the cylindrical body 14, and the protruding portion 13 is pushed out firmly laterally from the anchor body 12. Once the protruding portion 13 has been pushed out, the cylindrical body 14 is removed from the anchor installation hole 6.

[0026] As shown in Figure 3(D), after the extension process, the extension portion 13 is brought into contact with the through-side 5b, and with the arm material 13a of the extension portion 13 embedded in the through-side 5b of the anchor installation target 5, the anchor body 12 is fixed to the anchor installation target 5 by filling the inside of the anchor installation hole 6 with a binder 18 made of synthetic resin adhesive (anchor fixing process). If the anchor installation target 5 is made of concrete, it is preferable that the binder 18 is made of cement.

[0027] Furthermore, as shown in Figure 3(E), the anchor body 12 is inserted into the insertion hole of the washer 9b, which has an insertion hole and a screw hole, and the washer 9b is fixed along the insertion side 5a of the anchor installation target 5 with a screw 9a inserted into the screw hole. The tightening nut 10 is screwed onto the male thread 12a of the anchor body 12 to tighten the anchor body 12, and the arm material 13a of the protruding part 13 is firmly bitten into the through side 5b of the anchor installation target 5, thereby fixing the anchor body 12. Once the binder 18 hardens, the installation of the post-installed anchor set 11 is complete.

[0028] In the post-installed anchor installation method, the tip of the anchor body 12, with the protruding portion 13 aligned with the anchor body 12, is inserted into the anchor installation hole 6 from the insertion side 5a, inserting the anchor body 12 into the interior of the cylindrical body 14. The cylindrical body 14 is then pulled out from the rear of the anchor installation hole 6, the connection between the protruding portion 13 and the cylindrical body 14 by the connecting material 15 is severed, and the protruding portion 13, which was aligned with the anchor body 12, is spread out laterally from the anchor body 12 by biasing force. With the protruding portion 13 in contact with the penetration side 5b, the anchor body 12 can be fixed to the anchor installation target 5 by filling the inside of the anchor installation hole 6 with a binder 18. Therefore, even if the anchor installation target 5 is made of wood, cracks or damage to the anchor installation target 5 are less likely to occur.

[0029] Since the protruding portion 13 has multiple arm members 13a and net members 13b, when the anchor body 12 is fixed to the anchor installation target 5 by filling the inside of the anchor installation hole 6 with a binder 18, the binder 18 can be attached to the net members 13b and the protruding portion 13 can be fixed to the anchor installation target 5. The arm material 13a of the protruding portion 13 may be made of a shape memory alloy and have the property of returning to a state where it protrudes laterally from the anchor body 12 when heated above a predetermined temperature from a state along the anchor body 12.

[0030] Figure 4 shows a post-installed anchor installation method according to a third embodiment of the present invention. In Figure 4, the same reference numerals are used for parts of the same type as in Figure 2, and redundant explanations are omitted. In the post-installed anchor installation method of the third embodiment of the present invention, the post-installed anchor set of the first embodiment of the present invention is used. First, as shown in Figure 4(A), an anchor installation hole 6 is formed in the anchor installation target 5, which has an insertion side 5a and a penetration side 5b, passing through the insertion side 5a and the penetration side 5b (hole formation step). Examples of anchor installation targets 5 include wooden walls, columns, beams, etc., but other targets may also be used. The insertion side 5a and the penetration side 5b of the anchor installation target 5 are usually opposite sides parallel to each other, but they do not necessarily have to be parallel to each other. The anchor installation hole 6 can be formed using an electric drill D or the like. After forming the anchor installation hole 6, the internal debris is sucked up with a suction device, cleaned with a blower, brushing, etc., and the length of the hole is measured. The inside of the anchor installation hole 6 is checked with an endoscope.

[0031] After the hole formation process, a housing portion 6a is formed on the inner surface of the anchor installation hole 6, capable of accommodating the protruding portion 3 that extends laterally from the anchor body 2 (housing portion formation process). The housing portion 6a can be formed using an electric drill D with a blade H extending from its side. As shown in Figure 4(B), after the housing portion 6a formation process, the tip of the anchor body 2 is inserted into the anchor installation hole 6 from the insertion side 5a with the protruding portion 3 aligned with the anchor body 2, and the protruding portion 3 is positioned facing the housing portion 6a (anchor insertion process). As shown in Figure 4(C), after the anchor insertion process, the cylindrical body 4 is inserted into the anchor installation hole 6 from the insertion side 5a, and the anchor body 2 is inserted into the cylindrical body 4, and the protruding portion 3, which is aligned with the anchor body 2, is pushed out so that it extends laterally from the anchor body 2 and positioned in the housing portion 6a (protrusion process). After the protrusion process, the cylindrical body 4 is removed from the anchor installation hole 6 (cylindrical body removal process).

[0032] As shown in Figure 4(D), after the cylindrical body 4 is removed, the protruding portion 3 is brought into contact with the inner surface of the housing portion 6a, and with the arm material 3a embedded in the housing portion 6a, the anchor body 2 is fixed to the anchor installation target 5 by filling the inside of the anchor installation hole 6 with a binder 8 made of synthetic resin adhesive (anchor fixing process). Furthermore, the anchor body 2 is inserted into the insertion hole of the washer 9b, which has an insertion hole and a screw hole, and the washer 9b is fixed along the insertion side 5a of the anchor installation target 5 with a screw 9a inserted into the screw hole. The tightening nut 10 is screwed onto the male thread 2a of the anchor body 2 to tighten the anchor body 2, firmly embedding the arm material 3a of the protruding portion 3 into the housing portion 6a and fixing the anchor body 2. Once the binder 8 hardens, the installation of the post-installed anchor is complete. After the installation of the post-construction anchors is complete, the wall panel 21, etc. can be fixed to the penetrating side 5b of the anchor installation target 5 via the intermediate stud 20, etc.

[0033] In addition, in the hole-forming process shown in Figure 4(A), after forming an anchor installation hole 6 in the anchor installation target 5 using an electric drill D or the like as shown in Figure 5(A-1), a housing portion 6a with a different shape from that shown in Figures 4(A) to (D) may be formed using an electric drill D' or the like having an umbrella-shaped blade H' as shown in Figure 5(A-2).

[0034] In the post-installed anchor installation method of the third embodiment of the present invention, a housing portion 6a is formed on the inner surface of the anchor installation hole 6, and the protruding portion 3 that extends laterally from the anchor body 2 is housed in the housing portion 6a. Therefore, even if there is no space to position the protruding portion 3 on the through-side 5b of the anchor installation target 5, the post-installed anchor can be installed. Furthermore, even if the anchor installation target 5 is made of wood, cracks or damage to the anchor installation target 5 are less likely to occur. [Explanation of symbols]

[0035] 1 Post-installed anchor set, 2 Anchor body, 2a Male thread, 2b Marking, 3 Protruding part, 3a Arm material, 3b Net material, 4 cylindrical body, 4a bulging part, 4b flange, 5 anchor installation target, 5a Insertion side, 5b Through side, 6 Anchor installation hole, 7 Nut, 8. Bonding agent, 9a. Screw, 9b. Washer, 10. Tightening nut, 11 Post-installed anchor set, 12 Anchor body, 12a Male thread, 13 Protruding part, 13a Arm material, 13b Net material, 14 Tube body, 14a Bulging part, 14b Flange, 15 Connecting material, 18 Binder, 20 Studs, 21 Wall panels, D Electric drill, D' Electric drill, H Blade, H' Blade

Claims

1. It has an anchor body, an overhanging part, and a cylindrical body. The anchor body is rod-shaped, The protruding portion is provided at the tip of the anchor body so as to be positioned either extending laterally from the anchor body or along the anchor body. The cylindrical body is provided in such a way that when the anchor body is inserted into it from the rear end of the anchor body, the protruding portion that is aligned with the anchor body is pushed outwards from the anchor body in a lateral direction. A distinctive feature is the post-installed anchor set.

2. The post-installed anchor set according to claim 1, characterized in that the protruding portion has a plurality of arm members and a net member, each arm member is provided so as to be positioned to protrude laterally from the anchor body radially from the tip of the anchor body, the net member is attached to the arm members and extends between the arm members when each arm member is positioned to protrude laterally from the anchor body.

3. It has an anchor body, an overhanging part, a cylindrical body, and a connecting member. The anchor body is rod-shaped, The protruding portion can be positioned at the tip of the anchor body in a state where it protrudes laterally from the anchor body and in a state where it is aligned with the anchor body, and has a biasing force that positions it in the state where it protrudes laterally from the anchor body. The cylindrical body is provided so that the anchor body can be inserted into it and removed from the rear relative to the anchor body. The connecting member connects the protruding portion and the cylindrical body, positioning the protruding portion along the anchor body against the biasing force, and is provided to sever the connection between the protruding portion and the cylindrical body when the cylindrical body is pulled backward relative to the anchor body. A distinctive feature is the post-installed anchor set.

4. A post-installed anchor installation method using the post-installed anchor set according to claim 1 or 2, A hole forming step in which an anchor installation hole is formed in an anchor installation target having an insertion side and a through side, the hole forming step in which an anchor installation hole is formed that penetrates the insertion side and the through side, After the hole forming step, the anchor insertion step involves inserting the tip of the anchor body into the anchor installation hole from the insertion side with the protruding portion aligned with the anchor body, and positioning the protruding portion on the outside of the through-side. After the anchor insertion step, the cylindrical body is inserted into the anchor installation hole from the insertion side, the anchor body is inserted into the cylindrical body, and the protruding portion, which is aligned with the anchor body, is pushed outwards so that it protrudes laterally from the anchor body in a protruding state. After the extension process, the cylindrical body is removed from the anchor installation hole in a cylindrical body removal process, After the cylindrical body removal step, the anchor fixing step is performed in which the anchor body is fixed to the anchor installation target with the protruding portion in contact with the through-hole side. A post-installed anchor installation method characterized by having [a specific feature].

5. A post-installed anchor installation method using the post-installed anchor set according to claim 1 or 2, A hole forming step in which an anchor installation hole is formed in an anchor installation target having an insertion side and a through side, the hole forming step in which an anchor installation hole is formed that penetrates the insertion side and the through side, After the hole forming step, a housing portion forming step is performed to form a housing portion on the inner surface of the anchor installation hole that is capable of accommodating the protruding portion that extends laterally from the anchor body, After the housing portion forming step, the anchor insertion step involves inserting the tip of the anchor body into the anchor installation hole from the insertion side with the protruding portion aligned with the anchor body, and positioning the protruding portion in a position facing the housing portion. After the anchor insertion step, the cylindrical body is inserted into the anchor installation hole from the insertion side, the anchor body is inserted into the cylindrical body, and the protruding portion, which is aligned with the anchor body, is pushed out so that it protrudes laterally from the anchor body and positioned in the housing section. After the extension process, the cylindrical body is removed from the anchor installation hole in a cylindrical body removal process, After the cylindrical body removal step, the anchor fixing step is performed in which the anchor body is fixed to the anchor installation target with the protruding portion in contact with the inner surface of the housing portion. A post-installed anchor installation method characterized by having [a specific feature].

6. A post-installed anchor installation method using the post-installed anchor set described in claim 3, A hole forming step in which an anchor installation hole is formed in an anchor installation target having an insertion side and a through side, the hole forming step in which an anchor installation hole is formed that penetrates the insertion side and the through side, After the hole forming step, the anchor insertion step involves inserting the tip of the anchor body together with the cylindrical body into the anchor installation hole from the insertion side, with the protruding portion aligned with the anchor body, and positioning the protruding portion on the outside of the through-side. After the anchor insertion step, the cylindrical body is removed from the anchor installation hole to the rear, and the connection between the protruding portion and the cylindrical body by the connecting member is cut in a cylindrical body removal step, After the cylindrical body removal step, the protruding portion, which is aligned with the anchor body, is extended laterally from the anchor body by the biasing force. After the extension step, the anchor fixing step is performed in which the extended portion is brought into contact with the through-hole and a binder is filled into the inside of the anchor installation hole to fix the anchor body to the anchor installation target, A post-installed anchor installation method characterized by having [a specific feature].

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