JP2005273447A - Anchor, its temporary fixation method and structure using the same method, and anchor installation jigs - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple-structured anchor capable of being temporarily fixed easily and reliably to a base material such as a foundation, wall, column, etc. made of concrete, mortar, blocks, etc., being easy in work execution, being fixed strongly and highly reliably to the base material without any load on it fastening an anchored object securely to the base material, and having a high draw-out resistant strength as well as excellent durability. <P>SOLUTION: The anchor is provided with a flange formed around the outer circumference of the top end of its buried part, a female thread formed at the center of the buried part in a certain depth from its top end in parallel with the longitudinal anchor shaft core, an insert hole bored at the center of the buried part from its bottom end to a certain height in parallel with the longitudinal anchor shaft core or a female thread for temporarily fixing the anchor formed at the center of the buried part from its bottom end to a certain height in parallel with the longitudinal anchor shaft core, an annular component for temporary fixing the anchor arranged at the bottom end of the buried part, and a means inserted through the insert hole or screwed down to the female thread for temporary fixing the anchor for expanding the annular component for temporary fixing the anchor in diameter. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an anchor embedded in a base material such as a foundation, a wall, or a pillar formed of concrete, mortar, or a block, for fixing an object to be fixed to the base material, a method for temporarily fixing the anchor, and a temporary method using the anchor. The present invention relates to a fixing structure and an anchor mounting jig.

There are two types of anchors, mechanical anchors and chemical anchors, that are embedded in base materials such as concrete, mortar, blocks, etc. is there.
For example, in (Patent Document 1), as a mechanical anchor, “a pin insertion hole having a narrowed bottom portion at the back of the front end, an open leg portion that can be expanded at the front end portion, and a male screw at the rear end portion are provided. There is disclosed a “pin-driving type expansion anchor comprising a cylindrical anchor body provided and a driving pin inserted into a pin insertion hole”.
In addition, (Patent Document 2) describes, as chemical anchors, “an anchor body, an insertion hole drilled in the center of the anchor body, a capsule containing an oxalate aqueous solution built in the insertion hole, and the insertion It is composed of an insert member inserted through a hole, and when the anchor body is driven into a hole for anchoring a base material such as concrete, the capsule is broken and the inner wall of the hole for base material is hardened An anchor having a capsule and a method for constructing the same are disclosed.
(Patent Document 3) mainly describes a means for temporarily fixing a mechanical anchor as follows: “In various types of conventionally known screws, anchors, etc., the restoring force is compressed by insertion into the hole of the mating member at the main point. There is disclosed a “temporary fixing means such as a screw or an anchor” characterized in that an elastic protrusion on the wall is provided.
(Patent Document 4) states that “a thread portion that extends from the base end portion to the body portion is provided on the outer peripheral surface of the anchor, and a thread groove is provided in the axial direction from the base end portion to the tip end portion. It has a tapered part with an enlarged diameter at the front, a shaft part smaller than the outer diameter of the body part following the taper part continues to the body part through the step part, and further has a plurality of slits in the shaft part A resin combined anchor device in which an expansion member is wound and fitted, and an anti-rotation protrusion is provided on the outer peripheral surface of the expansion member is disclosed.
Japanese Utility Model Publication No. 3-75305 JP-A-8-1335026 Japanese Utility Model Publication No. 3-4919 JP 2003-269100 A

However, the above conventional techniques have the following problems.
(1) Mechanical anchors such as (Patent Document 1) have an open leg portion that is widened, and the open leg portion is brought into direct contact with a hole wall of a lower hole formed in a base material, and the friction force thereof. In the case where the pulling strength is insufficient and a high tensile pressure is applied, the anchor comes off together with the structure, resulting in a problem of lack of reliability. Further, since the open leg portion is expanded and fixed by being hit by a person like a pin driving type, there is a problem that the pullout strength is likely to vary and the reliability is lacking. Furthermore, since the open leg is fixed directly in contact with the hole wall of the lower hole, when the lower hole is drilled in the edge or thin part of the base material such as concrete or mortar, and there is little marginal space, the hole wall Cracks and cracks are likely to occur due to the stress generated in the steel, and there is a problem that the strength is insufficient and the reliability and durability are lacking.
(2) Chemical anchors such as (Patent Document 2) are fixed with adhesive strength by filling the outer periphery of the anchor with an adhesive and curing it, and obtain sufficient strength after curing. However, since it takes time to cure, it has a problem of lack of productivity and workability.
(3) The mechanical anchor of (Patent Document 3) is provided with a protruding portion of an elastic body that is compressed by insertion into a hole and exerts a restoring force on the hole wall as a temporary fixing means. The projecting part is shaved or shredded and lacks in reliability, and since the fixing method with the hole is the same as the conventional mechanical anchor, regarding reliability and durability such as strength and variation (Patent Document) It had the same problem as 1).
(4) Since the resin combined anchor device of (Patent Document 4) is also mechanically fixed, it is possible to apply a load to the bolt immediately after construction, but the number of parts is large, the shape is complicated, and the productivity and workability are high. Had the problem of lacking. Also, by providing a rotation stop projection on the outer peripheral surface of the expansion member, the expansion member is prevented from rotating and expanded to contact the inner peripheral surface of the construction hole. When the rotation stop protrusion is scraped or chipped, the expansion member cannot be expanded, resulting in a problem of lack of reliability.

  The present invention solves the above-described conventional problems, and can be easily and reliably temporarily fixed to a base material such as a base, a wall, or a pillar formed of concrete, mortar, or a block with an easy construction, and has excellent workability. Providing anchors that can be firmly fixed without imposing a burden on the base material, have excellent reliability, can securely bond the base material and the object to be fixed, have high pullout strength, and have excellent durability. Provision of a temporary fixing method that can be easily and reliably temporarily fixed, ensuring workability and reliability in subsequent processes, and fixing a base material and an object to be fixed using the method in a short time. Provision of a temporary fixing structure with excellent workability and productivity, and provision of an anchor mounting jig that can be temporarily fixed at the time of anchor construction and can improve workability.

In order to solve the above-mentioned problems, an anchor of the present invention, a temporary fixing method thereof, a temporary fixing structure using the anchor, and an anchor mounting jig have the following configurations.
The anchor according to claim 1 of the present invention is embedded in a base hole formed in a base material such as a concrete, mortar, block, or the like, a base material such as a pillar, or the like, and an outer periphery of the embedded portion. An anchor that is fixed by an adhesive filled between a hole wall of a lower hole and tightly connects the base material and an object to be fixed, and a flange formed on an outer periphery of an upper end of the embedded portion, and the embedded An internal thread portion formed from the upper end of the embedded portion to a predetermined depth parallel to the longitudinal direction of the shaft core at the center portion of the embedded portion, and the lower end of the embedded portion parallel to the longitudinal direction of the shaft core at the center portion of the embedded portion A temporary fixing female thread portion formed from the lower end of the embedded portion to a predetermined height parallel to the longitudinal direction of the shaft core in the insertion hole drilled to a predetermined height from the center or the central portion of the embedded portion, An annular temporary fixing member disposed at the lower end, and inserted through the insertion hole or temporarily fixed Has a configuration which includes a radially enlarged section for being screwed into the internal thread portion is expanded the annular temporary fixing member.
This configuration has the following effects.
(1) Since it has the collar part formed in the upper-end outer periphery of an embedding part, an embedding part can be held on the upper surface of a preform | base_material, and an embedding part can be hold | maintained, and an anchor may be buried inside a pilot hole. However, only the embedded portion can be reliably embedded in the pilot hole, and the anchor can be temporarily fixed.
(2) Since it has a flange formed on the outer periphery of the upper end of the embedded portion, when the embedded portion is inserted into the lower hole of the base material, the embedded portion can be pushed into the lower hole using the flange. Excellent in properties.
(3) Fixing bolts to anchors that are embedded in the lower hole and temporarily fixed by having a female screw portion formed from the upper end of the embedded portion to a predetermined depth in the center of the embedded portion in parallel with the longitudinal direction of the shaft core. Can be screwed, so that a fixing bolt can be inserted into a fixing hole or the like of the fixed object and fixed to the base material.
(4) An insertion hole drilled from the lower end of the buried portion to a predetermined height parallel to the longitudinal direction of the shaft core in the central portion of the buried portion, or the lower end of the buried portion parallel to the longitudinal direction of the shaft core in the central portion of the buried portion For temporary fixing of the ring, which is provided at the lower end of the embedded portion by having a female screw portion for temporary fixing formed from a predetermined height to a predetermined height by inserting the diameter expanding means through the insertion hole or screwing into the female screw portion for temporary fixing. The diameter of the member can be increased in the outer circumferential direction, etc., and the outer periphery of the annular temporary fixing member can be brought into contact with the hole wall of the lower hole, so that the anchor is temporarily fixed to the lower hole without imposing a burden on the base material. Therefore, the anchor can be reliably constructed even in a place where the marginal dimension is small.
(5) Since the outer diameter of the annular temporary fixing member is brought into contact with the hole wall of the lower hole by expanding the diameter of the annular temporary fixing member, the hole wall of the lower hole is pressed evenly by the annular temporary fixing member. And a certain pulling strength can be secured in the temporarily fixed state.
(6) Since the anchor can be temporarily fixed in the pilot hole of the base material by the annular temporary fixing member, the fixing bolt is screwed onto the female screw portion of the embedded portion before the adhesive is completely solidified and the anchor is fixed. Even if it makes it, an anchor does not rotate together, a fixing bolt can be fixed to an internal thread part reliably, and a base material and a fixed object can be fixed.
(7) Since the anchor is temporarily fixed to the pilot hole of the base material by the annular temporary fixing member, and the outer periphery of the embedded portion is fixed by the adhesive, the anchor tensile strength can be improved, and the pullout strength can be improved. Variations can be reduced.

Here, the material of the buried part and the diameter expanding means is made of stainless steel, chrome steel, steel, cast steel, cast iron, metal such as carbon steel, metal such as aluminum alloy, carbon fiber, boron fiber, glass fiber In addition, an organic or inorganic fiber such as a metal fiber and a synthetic resin-molded one are used. In the case of a metal, a rust-proofed one is preferably used. Thereby, it can prevent that an embedding part and a diameter expansion means rust, and can improve the workability | operativity of an assembly or a decomposition | disassembly.
For the annular temporary fixing member, an elastic body such as polyurethane resin or synthetic rubber or a soft metal such as lead is preferably used.
When the annular temporary fixing member is formed of a cylindrical metal material, a plurality of cuts are formed in the vicinity of the central portion of the cylindrical height direction in parallel to the height direction, and divided into a plurality of leaf springs to expand the diameter. When compressed by the means, the diameter may be increased so as to bend in the outer peripheral direction, and the outer periphery of the annular temporary fixing member may be brought into point contact with the hole wall of the lower hole. Thereby, a gap is generated on the outer periphery of the annular temporary fixing member during temporary fixing, and the gap can be filled with an adhesive, so that the adhesive is not divided between the embedded portion and the diameter expanding means, The adhesive can be filled without any spots over the entire length of the anchor, and the pullout strength of the anchor can be improved.

The outer diameter of the annular temporary fixing member before deformation is set to be smaller than the diameter of the lower hole of the base material. Thereby, when inserting the embedded portion of the anchor into the lower hole, the annular temporary fixing member is excellent in workability and reliability without being caught or scraped by the hole wall of the lower hole.
The outer diameter of the collar is larger than the diameter of the lower hole in the base material, and the bottom surface of the flat collar is surely locked to the upper surface of the base material when the embedded part is inserted into the lower hole. To do. Further, when a counterbore having a thickness equal to or greater than the thickness of the collar portion is formed on the outer periphery of the lower hole, the collar portion does not protrude from the surface of the base material, and the fixed object can be supported by the entire surface of the base material.
The outer shape of the collar portion may be formed in a polygonal shape such as a rectangular shape, a hexagonal shape, an octagonal shape or the like other than a circular shape. By having at least one pair of parallel parts on the outside, the heel part can be easily grasped with a tool such as a wrench, and when the embedded part is inserted into the pilot hole of the base material or when temporarily fixed by a diameter expanding means For example, it is possible to fix the buried portion to improve the workability.
As the diameter expanding means, the annular temporary fixing member is directly expanded in the vertical direction to expand the diameter, or the through hole formed in the center of the annular temporary fixing member is expanded in the outer peripheral direction. What makes it diameter is used suitably.

  In the case where the annular temporary fixing member is formed of a soft metal, a member for expanding the diameter by compressing the annular temporary fixing member directly in the vertical direction is suitably used as the diameter expanding means. In particular, a pressing portion formed in a substantially circular flat plate shape or the like that contacts the lower surface of the annular temporary fixing member, and a substantially cylindrical insertion that protrudes from the upper surface of the pressing portion and is inserted into the insertion hole of the annular temporary fixing member. And having a part. Thereby, when the embedded portion is inserted into the lower hole of the base material, the bottom surface of the pressing portion of the diameter expanding means is pressed against the bottom surface of the lower hole, and the insertion portion of the diameter expanding means is formed at the lower end of the embedded portion. By inserting and fitting into the insertion hole, the annular temporary fixing member can be compressed and expanded in the outer circumferential direction. If the female threaded part of the embedded part is not in communication with the insertion hole, the fixing bolt and the diameter expanding means do not interfere when the fixing bolt is screwed into the female threaded part. Can be prevented from being damaged.

When the insertion hole communicates with the female screw portion, a fitting projection that deforms in the outer peripheral direction due to the spring property may be formed at the upper end of the insertion portion of the diameter expanding means. Thereby, after compressing the fitting projection and inserting the insertion portion through the insertion hole, the fitting projection can be expanded in diameter at the upper end of the insertion hole. At this time, by forming the hole diameter of the insertion hole to be smaller than the inner diameter of the female screw portion, the fitting protrusion can be locked to the upper end of the insertion hole. The diameter-expanding means is not easily removed from the insertion hole by the fitting projection, and the diameter-expanded (compressed) state of the annular temporary fixing member can be maintained. Therefore, the annular temporary fixing member is made of an elastic material such as a synthetic resin or a synthetic rubber. Even when it is formed of a body, it is possible to prevent the temporary fixation from being released.
Further, when at least the insertion portion of the diameter expanding means is formed in a substantially conical shape, a substantially frustoconical shape, a substantially hemispherical shape, etc., the inside of the insertion hole can be smoothly made by inserting the diameter expanding means from the small diameter side into the insertion hole. The diameter of the annular temporary fixing member can be increased by expanding the through hole of the annular temporary fixing member in the outer peripheral direction.

In the case where a temporary fixing female thread portion is formed on the lower end side of the embedded portion, a male thread portion can be formed in the insertion portion of the diameter expanding means and can be screwed into the temporary fixing female thread portion. By disposing or forming a rotation-preventing member for the diameter-enlarging means that engages with the lower hole of the base material on the lower end side of the pressing part, the diameter-enlarging means is simply inserted through the lower hole and rotated. Ascending along the insertion hole, the annular temporary fixing member can be compressed and expanded in diameter by the pressing portion.
In addition, since the lower end position of the embedded portion can be made constant by having the flange on the outer periphery of the upper end of the embedded portion, the diameter expansion amount of the annular temporary fixing member can be adjusted by managing the depth of the prepared hole. It is possible to obtain a desired pulling strength in the temporarily fixed state.

Invention of Claim 2 is an anchor of Claim 1, Comprising: The said insertion hole is drilled in communication with the said internal thread part of the said embed | buried part, The said diameter expansion means is the said insertion hole and A temporary fixing bolt inserted through a through hole formed in the center of the annular temporary fixing member and rotatably supported by the embedded portion, and a male screw portion of the temporary fixing bolt and screwed into the annular temporary fixing bolt. And an annular pressing member in contact with the lower surface of the fixing member.
With this configuration, in addition to the operation of the first aspect, the following operation is provided.
(1) The insertion hole is drilled in communication with the female threaded portion of the embedded portion, and the diameter expanding means is inserted into the through hole formed in the center of the insertion hole and the annular temporary fixing member and rotated to the embedded portion. A pilot hole drilled in the base material by having a temporary fixing bolt that is freely supported and an annular pressing member that is screwed into the male screw portion of the temporary fixing bolt and that contacts the lower surface of the annular temporary fixing member. Just by rotating the temporary fixing bolt with a tool such as a hexagon wrench, the annular pressing member screwed into the male screw portion of the temporary fixing bolt is moved upward along the male screw portion of the temporary fixing bolt. The annular temporary fixing member inserted between the male screw portion of the temporary fixing bolt and sandwiched between the lower end of the embedded portion and the annular pressing member can be compressed up and down. The diameter of the member can be increased in the outer circumferential direction, and the outside of the annular temporary fixing member The can be brought into contact with the hole wall of the lower hole, you are possible to temporarily fix the anchor pilot hole.
(2) Since the annular temporary fixing member is compressed in the vertical direction by being sandwiched between the lower end of the embedded portion and the annular pressing member, the entire upper and lower surfaces of the annular temporary fixing member are uniformly compressed and expanded in the outer peripheral direction. Thus, the outer periphery of the annular temporarily fixing member can be evenly brought into contact with the hole wall of the lower hole, and the pullout strength in the temporarily fixed state can be ensured.
(3) Since the diameter of the annular temporary fixing member is increased by the annular pressing member screwed to the temporary fixing bolt, a certain pulling strength can be secured by managing the tightening torque of the temporary fixing bolt. Variations can be reduced.

Here, the insertion hole that communicates with the internal thread portion of the embedded portion is formed with a smaller diameter than the internal diameter of the internal thread portion. As a result, the head of the temporary fixing bolt can be locked at the upper end of the insertion hole, so that the temporary fixing bolt can be rotatably supported by simply inserting the temporary fixing bolt into the insertion hole from the female thread side of the embedded portion. Thus, the anchor can be temporarily fixed.
In addition, by holding the embedded portion when tightening the temporary fixing bolt, it is possible to prevent the embedded portion of the anchor from rotating together, and the workability is excellent. As a means for holding the embedded portion, it is formed in an annular shape so that a tool for rotating the temporary fixing bolt can be inserted, and presses the upper surface of the collar portion, or a concave or convex portion formed on the upper surface of the collar portion. What fits or engages, the thing screwed in the internal thread part of an embedding part, etc. are used suitably.
Further, when the washer is disposed under the head of the temporary fixing bolt, the temporary fixing bolt can be rotated more smoothly, and workability can be improved.
In addition, when the head part of the temporary fixing bolt is formed at the lower part of the female screw part with a counterbore part having a depth that does not protrude toward the female screw part side of the embedded part, the fixing bolt and the temporary fixing bolt to be screwed to the female screw part The head does not interfere, and the anchor can be prevented from being broken.

A tool fitting recess such as a single letter, a cross, a hexagon or a star is formed on the head of the temporary fixing bolt, or the outer shape of the head is formed into a polygon such as a hexagon. As a result, the temporary fixing bolt can be rotated with a tool such as a screwdriver or a wrench, the temporary fixing bolt can be easily tightened or loosened, and the diameter expansion amount of the annular temporary fixing member is adjusted. be able to.
It is preferable to form locking concave portions or locking convex portions that are locked to each other on the top surface and / or bottom surface of the annular temporary fixing member and the bottom surface of the embedded portion and / or the top surface of the annular pressing member. Thereby, it is possible to prevent the annular pressing member and the annular temporary fixing member from rotating, and it is possible to prevent the annular pressing member and the annular temporary fixing member from rotating together when the temporary fixing bolt is rotated.
In addition, when a nut is used as the annular pressing member, the versatility and productivity are excellent.

Invention of Claim 3 is an anchor of Claim 2, Comprising: The lower end of the said embedding part, the upper and lower surfaces of the said cyclic | annular temporary fixing member, and the upper surface of the said cyclic | annular pressing member each inclined at equal angles It has the structure provided with the 1 or more inclination part.
With this configuration, in addition to the operation of the second aspect, the following operation is provided.
(1) When the temporary fixing bolt is tightened by having one or more inclined portions in which the lower end of the embedded portion, the upper and lower surfaces of the annular temporary fixing member, and the upper surface of the annular pressing member are inclined at equal angles, respectively. The annular pressing member does not rotate together, the annular temporary fixing member can be reliably compressed and expanded in diameter, and the outer periphery of the annular temporary fixing member can be reliably brought into contact with the hole wall of the lower hole. The anchor can be temporarily fixed to the prepared hole.
Here, the lower end of the embedded portion, the upper and lower surfaces of the annular temporary fixing member, and the inclined portion formed on the upper surface of the annular pressing member may be formed by inclining in only one direction, It may be formed in a zigzag shape or the like.

Invention of Claim 4 is an anchor of Claim 2 or 3, Comprising: It has the structure where the said external thread part of the said bolt for temporary fixation of the said diameter expansion means is a reverse thread.
With this configuration, in addition to the operation of the second or third aspect, the following operation is provided.
(1) Since the male screw part of the temporary fixing bolt is a reverse screw, when the temporary fixing bolt is tightened by holding the female screw part of the embedded part by screwing, the fixing direction and temporary fixing of the embedded part Since the bolt tightening direction is reversed, the temporary fixing bolt can be securely tightened, and the annular pressing member can be reliably compressed and expanded in diameter by the annular pressing member. The outer periphery of the member can be reliably brought into contact with the hole wall of the lower hole, and the anchor can be temporarily fixed to the lower hole.

Invention of Claim 5 is an anchor of Claim 1, Comprising: The said internal thread part for temporary fixing is formed in communication with the said internal thread part by a diameter smaller than the internal diameter of the said internal thread part, The said diameter expansion The means is disposed at a temporary fixing male screw portion screwed into the temporary fixing female screw portion and inserted into a through hole formed in the center of the annular temporary fixing member, and a lower end of the temporary fixing male screw portion. And a pin that is inserted into the lower end of the annular temporary fixing member and inserted into the lower end of the annular temporary fixing member. doing.
With this configuration, in addition to the operation of the first aspect, the following operation is provided.
(1) The temporary fixing female thread portion is formed in communication with the female thread portion with a diameter smaller than the inner diameter of the female thread portion, and the diameter expanding means is screwed into the temporary fixing female thread portion and drilled in the center of the annular temporary fixing member. Since it has a male screw part for temporary fixing inserted through the provided through-hole and a circular pressing part disposed at the lower end of the male screw part for temporary fixing and in contact with the lower surface of the annular temporary fixing member, the male screw part for temporary fixing The circular pressing portion disposed at the lower end of the temporary fixing male screw portion can be reliably raised along the temporary fixing female screw portion only by rotating the temporary fixing male screw portion, and the annular temporary fixing member is formed by the embedded portion and the circular pressing portion. The diameter of the annular temporary fixing member can be increased by compressing it in the vertical direction with the pin interposed therebetween, the outer periphery of the annular temporary fixing member can be brought into contact with the hole wall of the lower hole, and the anchor can be temporarily fixed to the lower hole.
(2) The temporary fixing female threaded portion is formed in communication with the female threaded portion with a diameter smaller than the inner diameter of the female threaded portion, and the diameter expanding means is screwed into the temporary fixing female threaded portion and drilled in the center of the annular temporary fixing member Since it has a male screw part for temporary fixing inserted through the provided through hole and a pin that is inserted into the lower end of the male screw part for temporary fixing and fixed to the lower end part of the member for annular temporary fixing, the member for annular temporary fixing and the pin By arranging an annular member such as a washer between the two, the annular member such as a washer disposed at the lower end of the temporary fixing male screw portion can be securely fixed by simply rotating the temporary fixing male screw portion. And can be expanded in the vertical direction by sandwiching the annular temporary fixing member between the embedded portion and the annular member, and the outer periphery of the annular temporary fixing member is formed as a hole wall in the lower hole. The anchor can be temporarily fixed to the pilot hole. Kill.
(3) Since the annular temporary fixing member is compressed in the vertical direction by sandwiching the annular temporary fixing member between the lower end of the embedded portion and the circular pressing portion or an annular member such as a washer, the entire upper and lower surfaces of the annular temporary fixing member are uniformly compressed to the outer periphery. The outer circumference of the annular temporary fixing member can be evenly brought into contact with the hole wall of the lower hole, and the pulling strength in the temporarily fixed state can be ensured.
(4) Since the diameter of the annular temporary fixing member is increased by an annular member such as a circular pressing portion or a washer disposed on the temporary fixing male screw portion, a certain pull-out is achieved by managing the tightening torque of the temporary fixing male screw portion. The strength can be secured, and the variation in the drawing strength can be reduced.

Here, a tool fitting recess such as a single letter, a cross, a hexagon or a star is formed at the upper end of the temporary fixing male screw part. This allows the male screw part for temporary fixing to be rotated with a tool such as a screwdriver or a wrench, so that the male screw part for temporary fixing can be easily tightened or loosened, and the diameter of the annular temporary fixing member is adjusted. can do.
The temporarily fixing male screw portion and the circular pressing portion of the diameter expanding means may be formed integrally, or those formed separately may be fixed by pin fitting, welding or the like.
When tightening the temporary fixing male screw portion, holding the embedded portion by the same means as described above prevents the anchor embedded portion from co-rotating, and is excellent in workability.
Further, when a washer is disposed between the annular temporary fixing member and the circular pressing portion, the annular temporary fixing member can be prevented from rotating together with the circular pressing portion, and the temporary fixing male screw portion can be smoothly rotated. Therefore, the annular temporary fixing member can be reliably compressed and expanded in diameter, and the workability of temporary fixing can be improved.

The invention according to claim 6 is the anchor according to claim 5, wherein the temporary fixing female screw portion of the embedded portion and the temporary fixing male screw portion of the diameter expanding means are reverse screws. doing.
With this configuration, in addition to the operation of the fifth aspect, the following operation is provided.
(1) Since the internally fixed screw portion of the embedded portion and the internally fixed screw portion of the diameter expanding means are reverse screws, the internally fixed screw portion of the embedded portion is held by screwing and tightened. At this time, the fixing direction of the embedded portion and the tightening direction of the internal screw portion for temporary fixing are reversed, so that the internal screw portion for temporary fixing can be securely tightened, and the annular temporary fixing member is surely secured by the circular pressing portion. It is possible to compress and expand the diameter, the outer periphery of the annular temporary fixing member can be reliably brought into contact with the hole wall of the lower hole, and the anchor can be temporarily fixed to the lower hole.
(2) Since the temporary fixing female screw portion of the embedded portion and the temporary fixing female screw portion of the diameter expanding means are reverse screws, the temporary fixing female screw portion of the diameter expanding means is rotated clockwise to increase the diameter expanding means. Can be raised along the female threaded portion of the embedded portion, and the annular temporary fixing member can be compressed and expanded in diameter by the circular pressing portion, and the outer periphery of the annular temporary fixing member can be reliably brought into contact with the hole wall of the lower hole. Since the anchor can be temporarily fixed to the prepared hole, the workability is excellent.
(3) When the internal fixing screw portion of the embedded portion and the internal fixing screw portion of the diameter-expanding means are reverse screws, the lower surface of the fixing bolt is screwed when the fixing bolt is screwed into the internal screw portion of the embedded portion. Even if it comes into contact with the top surface of the head of the temporary fixing male screw portion of the diameter expanding means, a force is applied in the direction of rotating the temporary fixing male screw portion clockwise to compress the annular temporary fixing member. The temporary fixing by the fixing member can be prevented from being released.

Invention of Claim 7 is an anchor of any one of Claims 1 thru | or 6, Comprising: It has the structure by which the protrusion part and the uneven | corrugated | grooved part are formed in the outer peripheral surface of the said embed | buried part. ing.
With this configuration, in addition to the operation of any one of claims 1 to 6, the following operation is provided.
(1) Since protrusions and irregularities are formed on the outer peripheral surface of the embedded portion, the bite between the adhesive filled between the outer periphery of the embedded portion and the hole wall of the lower hole and the outer peripheral surface of the embedded portion The attachment can be improved and the fixing of the base material with the buried hole can be made stronger.
Here, the protrusions and irregularities formed on the outer peripheral surface of the embedded part are those in which continuous protrusions or discontinuous protrusions are randomly formed or spiral grooves, etc., and the outer periphery of the embedded part It is desirable that it be formed in a shape that functions as a buffer for the adhesive filled between the inner wall and the hole wall of the lower hole, and that widens the bonding area and provides an anchor effect. In addition, you may change the width | variety and depth of uneven | corrugated | grooved parts, such as a spiral groove, according to the kind (viscosity) of an adhesive agent.

Invention of Claim 8 is an anchor of any one of Claims 1 thru | or 7, Comprising: It has the structure provided with the taper part formed in the bottom face part of the said collar part. .
With this configuration, in addition to the operation of any one of claims 1 to 7, the following operation is provided.
(1) By having the taper portion formed on the bottom surface of the collar portion, the embedded portion can be easily aligned with the pilot hole of the base material, and when the diameter of the annular temporary fixing member is expanded, Since the outer periphery of the temporary fixing member can be brought into contact with the lower hole of the base material evenly, the embedded portion can be temporarily fixed to the lower hole of the base material more reliably.
Here, the taper portion is formed in an inclined shape or an arc shape that expands upward. As a result, when the embedded portion is inserted into the lower hole of the base material, the taper portion is engaged with the peripheral edge of the opening of the lower hole, so that the center of the lower hole and the center of the embedded portion are automatically aligned. Therefore, the outer periphery of the annular temporary fixing member can be reliably and stably brought into contact with the hole wall of the lower hole of the base material, and workability and reliability can be improved.

A ninth aspect of the present invention is the anchor according to any one of the first to eighth aspects, wherein the anchor holding concave portion drilled in the upper surface of the collar portion or the upper surface of the collar portion is projected. It has the structure provided with at least any one of the made anchor holding convex part.
With this configuration, in addition to the operation of any one of claims 1 to 8, the following operation is provided.
(1) A convex part that fits into the anchor holding concave part by having at least one of an anchor holding concave part drilled in the upper surface of the collar part or an anchor holding convex part projected from the upper surface of the collar part. The anchor portion can be held by an anchor mounting jig having a recess or the like that fits or engages with the anchor holding convex portion, and temporarily fixed by rotating a temporary fixing bolt or a temporary fixing male screw portion. At this time, the embedded portion does not rotate together, the diameter of the annular temporary fixing member can be reliably increased, and the temporary fixing can be firmly fixed to the pilot hole of the base material.
(2) By having an anchor holding recess or anchor holding projection on the upper surface of the collar, the anchor holding recess or anchor holding projection can be held even when a male screw such as a fixing bolt is screwed onto the female thread. Co-rotation of the embedded portion can be prevented, and the female screw portion and the male screw can be securely and firmly fixed.

Here, the anchor holding recess is preferably formed by two or more circular or oval holes formed in the upper surface of the flange. Further, the anchor holding convex portion is preferably formed by two or more pin-shaped projections disposed on the upper surface of the collar portion, or a projection having at least one pair of parallel portions on the outer side projecting from the upper surface of the collar portion. .
The anchor mounting jig is formed with an opening at least in the center so that a tool for rotating the temporarily fixing bolt or the temporarily fixing male screw portion of the diameter expanding means can be inserted. In the case where the collar portion has an anchor holding recess, a convex portion to be fitted into the anchor holding recess is formed on the back surface of the anchor mounting jig. In addition, when the collar portion has an anchor holding convex portion formed of a pin-shaped protrusion, a hole-shaped concave portion is formed on the back surface of the anchor mounting jig to which the anchor retaining convex portion is fitted. When it has an anchor holding convex part formed with protrusions having at least one pair of parallel parts on the outside, the opening of the anchor mounting jig can be fitted or engaged according to the shape of the anchor holding convex part Form.
In particular, when a part of the opening of the anchor mounting jig is formed in a U shape so as to open sideways, the anchor can be easily anchored from the side even after a male screw such as a fixing bolt is screwed to the anchor. The mounting jig can be removed and the workability is excellent.

The method for temporarily fixing an anchor according to claim 10 includes a step of drilling a pilot hole in the base material, a step of filling an adhesive into the pilot hole, and a step of filling the pilot hole with the adhesive. The anchor embedment step for inserting the embedded portion of the anchor according to any one of Items 1 to 9, and the annular temporary fixing member to expand the diameter by pressing or rotating the diameter expanding means. A temporary fixing step of bringing the outer periphery of the temporary fixing member into contact with the hole wall of the lower hole.
This configuration has the following effects.
(1) Since there is a pilot hole drilling step for drilling a pilot hole in the base material, the pilot hole can be drilled in accordance with the length of the embedded part of the anchor, and the embedded part protrudes from the surface of the base material. Can be prevented, and the base material and the fixed object can be reliably fixed.
(2) Since it has an adhesive filling step for filling the lower hole with an adhesive, the outer peripheral surface of the anchor portion temporarily fixed to the lower hole can be firmly fixed with an adhesive, and the pullout strength of the anchor can be increased. Can be improved.
(3) Since it has an adhesive filling step of filling the lower hole with an adhesive, the gap between the outer periphery of the anchor and the hole wall of the lower hole can be filled with an adhesive, and rainwater and moisture in the air can enter. Can be prevented, corrosion of the anchor can be prevented, and durability can be improved.
(4) In the anchor burying step, the anchor buried portion is inserted and embedded in the lower hole, and in the temporary fixing step, the diameter of the annular temporary fixing member is increased by the diameter expanding means, and the outer periphery of the annular temporary fixing member is Since it is brought into contact with the hole wall, the anchor embedded portion can be temporarily fixed to the lower hole of the base material, and the fixing bolt is fixed to the internal thread portion of the embedded portion before the adhesive filled in the adhesive filling process solidifies. Can be screwed, and the object to be fixed can be fixed to the base material.
(5) By pressing or rotating the diameter expanding means in the temporary fixing step, the diameter of the annular temporary fixing member is increased, and the outer periphery of the annular temporary fixing member is brought into contact with the hole wall of the lower hole. The anchor can be temporarily fixed to the pilot hole without applying a crack, and the occurrence of cracks and the like can be prevented even in a place where the marginal space is small, so that the anchor can be reliably constructed.

  Here, in the pilot hole drilling step, a pilot hole is drilled in the base material with a hammer drill, a rotary drill or the like using a cutting edge such as a hammer drill bit, diamond, or a core hole saw of a super steel tip. As a subsequent process of the pilot hole drilling process, it is preferable to perform a pilot hole cleaning process that removes chips and moisture accumulated in the pilot hole with a brush, a blower, or the like. This facilitates the insertion of the embedded portion of the anchor into the pilot hole and allows the embedded portion to be reliably embedded to a predetermined depth, and the outer peripheral surface of the embedded portion with an adhesive that is filled in a subsequent adhesive filling step. Can be covered without spots, the anchor pull-out strength can be ensured, and the reliability can be improved. When the pilot hole drilling step is performed at a factory or the like in advance, the precision of the pilot hole is excellent, the number of work steps at the site can be reduced, and productivity can be improved.

In addition, in the prepared hole drilling process, a prepared hole roughening process for roughening the surface by, for example, scraping the hole wall (inner peripheral surface) of the prepared hole with a wire brush or the like may be provided. By roughening the hole wall of the lower hole and forming irregularities, the adhesive filled in the lower hole and the surface of the hole wall of the lower hole are better bitten and the pullout strength of the anchor after curing the adhesive is effective. Can be improved. The rough surface roughening step may be performed by manually rotating a wire brush or the like, or by attaching a shaft portion of a wire brush or the like to the tip of a power tool such as a drill and rotating it electrically. .
Adhesives to be filled in the adhesive filling process are organic based mainly on unsaturated polyester resin, epoxy acrylate resin, vinyl urethane resin, epoxy resin, etc. A system adhesive is preferably used.

In the anchor embedding process, the anchor embedding portion is inserted through the pilot hole of the base material and embedded. Since the flange is formed on the outer periphery of the upper end of the anchor embedded portion, the embedded portion is inserted until the lower surface of the flange contacts the surface of the base material, thereby locking the flange to the opening peripheral edge of the lower hole. The anchor can be supported on the surface of the base material. In particular, when the tapered portion is formed on the bottom surface of the collar portion, the center of the pilot hole and the center of the anchor are automatically aligned, and the tapered portion is in contact with the opening peripheral edge of the pilot hole and stably. Since it is hold | maintained, the workability | operativity in a post process can be improved.
If necessary, a counterbore is formed on the outer periphery of the prepared hole so that the upper surface of the collar and the surface of the base material are flush with each other. Thereby, there is no unevenness | corrugation on the surface of a preform | base_material, a to-be-fixed object can be reliably supported by the whole surface of a preform | base_material, and it is excellent in fixation stability.

  In the temporary fixing step, the diameter of the annular temporary fixing member is increased by the diameter expanding means, and the outer periphery of the annular temporary fixing member is brought into contact with the hole wall of the lower hole. The diameter expanding means rises when pressed against the bottom surface of the lower hole, so that the diameter of the annular temporary fixing member can be increased by simply inserting the embedded portion into the lower hole drilled to a predetermined depth and pressing it. Further, the annular temporary fixing member can be compressed or expanded to expand the diameter in the outer peripheral direction, and the workability is excellent. In addition, when the annular temporary fixing member is compressed by rotating it by rotating the diameter expanding means, the annular temporary fixing member is reliably compressed in the vertical direction regardless of the depth of the lower hole. The diameter can be expanded, and it is excellent in reliability and workability.

The invention according to claim 11 is the anchor temporary fixing method according to claim 10, wherein the female thread portion of the anchor or the anchor holding recess or the anchor holding is performed as a pre-process or a post-process of the anchor embedding process. An anchor mounting jig mounting step for mounting an anchor mounting jig on the convex portion, and the temporary fixing step includes an anchor detent step for holding the anchor mounting jig and preventing rotation of the anchor It has the composition which is.
With this configuration, in addition to the operation of the tenth aspect, the following operation is provided.
(1) As a pre-process or a post-process of the anchor embedding process, the anchor mounting jig mounting process for mounting the anchor mounting jig to the female threaded portion of the anchor or the anchor holding concave portion or the anchor holding convex portion, Since it has an anchor rotation prevention process that holds the anchor mounting jig and prevents the anchor from rotating, when the diameter expanding means is rotated, the diameter expanding means and the anchor do not rotate together, and the annular The fixing member can be compressed and expanded in diameter, and the anchor can be temporarily fixed.
(2) When there is an anchor mounting jig mounting step in which an anchor mounting jig is mounted on the female threaded portion of the anchor, the anchor holding concave portion or the anchor holding convex portion as a pre-process of the anchor embedding step, the anchor is embedded in the anchor embedding step When the part is inserted into the pilot hole of the base material, the anchor can be held using the anchor mounting jig, and the anchor can be easily embedded.

  Here, as means for attaching the anchor mounting jig to the female threaded portion of the anchor, a means for fitting an elastic body such as synthetic rubber or polyurethane to the inner diameter of the female threaded portion or a means for screwing and fixing the male screw, etc. Can be used. Particularly, an anchor mounting jig screwed into the female threaded portion of the anchor can firmly hold the anchor, and can more reliably prevent the anchor from rotating. Moreover, what attaches the jig | tool for anchor attachment to an anchor holding | maintenance recessed part or an anchor holding | maintenance convex part is easy to attach or detach, and is excellent in workability.

In the anchor mounting jig mounting process, it is formed between the lower surface of the anchor mounting jig and the upper surface of the anchor collar with a soft synthetic rubber or synthetic resin that is larger than the outer diameter of the anchor flange. When the protective sheet is disposed, it is possible to prevent the overflowing adhesive filled in the pilot hole of the base material from adhering to the anchor mounting jig, and excellent in workability and maintainability of the anchor mounting jig. As the shape of the protective sheet, a circular or rectangular shape is preferable because of its excellent productivity, but any shape may be used as long as it is larger than the outer diameter of the collar and can prevent adhesion of the adhesive. An insertion hole larger than at least the inner diameter of the female thread portion of the embedded portion is formed in the substantially central portion of the protective sheet. Moreover, when the anchor holding recessed part or the anchor holding convex part is formed in the collar part, the position corresponding to the anchor holding concave part or the anchor holding convex part is also opened. Accordingly, the anchor mounting jig can be attached to the female screw portion, the anchor holding concave portion or the anchor holding convex portion via the protective sheet, and the temporary fixing bolt or the temporary fixing male screw can be inserted through the insertion hole. The part can be rotated.
The protective sheet may be removed after the temporary fixing process is completed and the anchor mounting jig is removed, but a male screw such as a fixing bolt is inserted into the female screw portion of the embedded portion from the insertion hole of the protective sheet. Since it can be screwed, it may be left as it is.

In the anchor mounting jig mounting step, the protective sheet is disposed between the lower surface of the anchor mounting jig and the upper surface of the anchor collar. It can also be arranged between the surface. In this case, the embedded portion can be easily inserted by forming the insertion hole of the protective sheet to have a hole diameter equal to or larger than the outer diameter of the anchor embedded portion. Moreover, when the taper part is formed in the bottom face part of a collar part, you may form a taper surface on the periphery of the insertion hole of a protective sheet according to the taper part of a collar part. Thereby, a collar part and a protective sheet can be stuck, it can prevent that an adhesive overflows from the clearance gap between the outer periphery of an embedding part, and an insertion hole to the surface side of a protective sheet, and is excellent in workability.
Further, when the protective sheet is formed of a transparent or translucent material, the overflow of the adhesive can be confirmed with the naked eye, and the filling failure of the adhesive can be prevented beforehand.

The anchor according to any one of claims 1 to 9, wherein the temporary fixing structure using the anchor according to claim 12 is embedded and temporarily fixed in the lower hole formed in the base material. A fixing bolt screwed into the female thread portion of the anchor; and the fixed object fastened to the base material via the anchor by the fixing bolt.
This configuration has the following effects.
(1) Since the anchor is embedded and temporarily fixed in a pilot hole drilled in the base material, the object to be fixed is fixed to the base material via the anchor with a fixing bolt screwed into the female thread portion of the anchor. Tightened and fixed.
(2) The object to be fixed is fixed to the base material via the anchor by the fixing bolt screwed to the female thread portion of the anchor, so that the adhesive filled in the pilot hole is not completely cured. In addition, the fixed object does not move, the work can be advanced, and the construction period can be shortened.
(3) Since the object to be fixed is fixed to the base material via the anchor by the fixing bolt screwed to the female threaded portion of the anchor, the adhesive hardens over time only by leaving it alone. The object to be fixed and the base material can be firmly fixed by changing from the fixed state to the fixed state.

The anchor mounting jig according to claim 13 is a non-rotating male screw portion screwed into the female screw portion of the anchor according to any one of claims 1 to 9, and an upper portion of the non-rotating male screw portion. And an anti-rotation male screw part and a tool insertion hole formed through the anti-rotation head.
This configuration has the following effects.
(1) Since the anchor mounting jig has a non-rotating male threaded portion that is threadedly engaged with the female threaded portion of the anchor, it can be easily threaded and fixed to the female threaded portion of the anchor manually or with a tool. When rotating the diameter means, the diameter expanding means and the anchor do not rotate together, the annular temporary fixing member can be reliably compressed and expanded in diameter, and the anchor can be temporarily fixed.
(2) Since the anchor mounting jig has a non-rotating head formed on the upper part of the non-rotating male screw, the anti-rotating head can be easily and securely held with a tool, improving workability. Can be made.
(3) Since the anchor mounting jig has a tool insertion hole drilled through the non-rotating male screw portion and the non-rotating head portion, even when a tool is required to rotate the diameter expanding means of the anchor The diameter expanding means can be easily rotated by inserting the tool through the tool insertion hole.

Here, by preparing multiple types of anchor mounting jigs with different sizes of the non-rotating male screw part, non-rotating head part, and tool insertion hole, they can be used properly according to the dimensions of the female thread part of the anchor. it can.
By forming the non-rotating head in a polygonal shape such as a hexagon, the anchor can be held via the anchor mounting jig with a tool such as a wrench or spanner, and the diameter of the anchor and the diameter of the anchor can be rotated together. Can be prevented.
A tool insertion hole penetrating the non-rotating male screw portion and the non-rotating head portion is formed along the axis of the non-rotating male screw portion and the non-rotating head portion so as to communicate with the female screw portion of the anchor. Accordingly, the shaft portion of a tool such as a screwdriver or a substantially L-shaped or substantially T-shaped wrench can be inserted from the tool insertion hole to the female threaded portion of the anchor, and the tip of the tool is positioned at the head of the diameter expanding means. It can be rotated by engaging with the portion, and the temporary fixing work can be easily performed.

The invention as set forth in claim 14 is the anchor mounting jig according to claim 13, wherein the jig is provided with a gripping portion provided continuously to the detent head.
With this configuration, in addition to the operation of the thirteenth aspect, the following operation is provided.
(1) Since the gripping portion is continuously provided on the detent head, when the anchor mounting jig is mounted on the anchor, the non-rotating male thread portion of the anchor mounting jig and the anchor female screw are used without using a tool. The part can be fixed by screwing it manually.
(2) Since the detent head has the grip portion, the anchor can be inserted into the pilot hole of the base material by grasping the grip portion, and the workability of the anchor embedding process can be improved.
(3) Since the detent head has a gripping part, the anchor can be fixed by embedding the anchor in the pilot hole of the base material and then holding the gripping part or pressing the gripping part against the base material. The anchor can be prevented from co-rotating during temporary fixing.

  Here, the gripping part can be provided at one place or two or more places radially from the center side of the detent head to the outside. The gripping part may be formed integrally with the detent head, or an engagement hole that engages with the detent head may be formed in the gripping part so as to be detachable. In addition, the bottom surface of the gripping part should be flush with the surface of the base material in a state where the non-rotating male thread part of the anchor mounting jig is screwed into the female thread part of the anchor and the anchor is embedded in the lower hole of the base material. Is preferred. As a result, the anchor can be held by pressing the grip portion against the base material, and the workability is excellent.

As described above, according to the anchor of the present invention, the temporary fixing method thereof, the temporary fixing structure using the anchor, and the anchor mounting jig, the following advantageous effects can be obtained.
According to invention of Claim 1, it has the following effects.
(1) Since it has the collar part formed in the upper-end outer periphery of an embedding part, an embedding part can be held on the upper surface of a preform | base_material, and an embedding part can be hold | maintained, and an anchor may be buried inside a pilot hole In addition, it is possible to provide an anchor excellent in workability and reliability, in which only the buried portion can be reliably buried in the pilot hole and the anchor can be temporarily fixed.
(2) Since it has a flange formed on the outer periphery of the upper end of the embedded portion, when the embedded portion is inserted into the lower hole of the base material, the embedded portion can be pushed into the lower hole using the flange. An anchor excellent in property can be provided.
(3) An insertion hole drilled from the lower end of the buried portion to a predetermined height parallel to the longitudinal direction of the shaft core in the central portion of the buried portion, or the lower end of the buried portion parallel to the longitudinal direction of the shaft core in the central portion of the buried portion For temporary fixing of the ring, which is provided at the lower end of the embedded portion by having a female screw portion for temporary fixing formed from a predetermined height to a predetermined height by inserting the diameter expanding means through the insertion hole or screwing into the female screw portion for temporary fixing. The diameter of the member can be increased in the outer circumferential direction, etc., and the outer periphery of the annular temporary fixing member can be brought into contact with the hole wall of the lower hole, so that the anchor is temporarily fixed to the lower hole without imposing a burden on the base material. Therefore, it is possible to provide an anchor with excellent reliability capable of reliably performing the anchor construction even in a place where the marginal dimension is small.
(4) Since the outer diameter of the annular temporary fixing member is brought into contact with the hole wall of the lower hole by expanding the diameter of the annular temporary fixing member, the hole wall of the lower hole is pressed evenly by the annular temporary fixing member. Therefore, it is possible to provide an anchor with excellent reliability that can secure a certain pulling strength in a temporarily fixed state.
(5) Since the anchor can be temporarily fixed to the pilot hole of the base material by the annular temporary fixing member, before the anchor is fixed after the adhesive such as synthetic resin or adhesive is completely solidified, the internal thread portion of the embedded portion Even if the fixing bolt is screwed to the anchor, the anchor does not rotate together, the fixing bolt can be securely fixed to the female thread, and the base material and the fixed object can be fixed. It is possible to provide an anchor having excellent workability that can shorten the length of the anchor.
(6) Since the anchor is temporarily fixed to the pilot hole of the base material by the annular temporary fixing member, and the outer periphery of the embedded portion is fixed by the adhesive, the anchor tensile strength can be improved, and the pulling strength can be improved. An anchor with excellent reliability that can reduce variation can be provided.

According to invention of Claim 2, in addition to the effect of Claim 1, it has the following effects.
(1) The insertion hole is drilled in communication with the female threaded portion of the embedded portion, and the diameter expanding means is inserted into the through hole formed in the center of the insertion hole and the annular temporary fixing member and rotated to the embedded portion. A pilot hole drilled in the base material by having a temporary fixing bolt that is freely supported and an annular pressing member that is screwed into the male screw portion of the temporary fixing bolt and that contacts the lower surface of the annular temporary fixing member. Just by rotating the temporary fixing bolt with a tool such as a hexagon wrench, the annular pressing member screwed into the male screw portion of the temporary fixing bolt is moved upward along the male screw portion of the temporary fixing bolt. The annular temporary fixing member inserted between the male screw portion of the temporary fixing bolt and sandwiched between the lower end of the embedded portion and the annular pressing member can be compressed up and down. The diameter of the member can be expanded, and the outer periphery of the annular temporary fixing member Can be brought into contact with the wall, it is possible to provide an anchor with excellent workability which can be temporarily fixed to anchor down hole.
(2) Since the annular temporary fixing member is compressed in the vertical direction by sandwiching the annular temporary fixing member between the lower end of the embedded portion and the annular pressing member, the entire upper and lower surfaces of the annular temporary fixing member can be uniformly compressed and expanded in diameter. The outer periphery of the annular temporary fixing member can be evenly brought into contact with the hole wall of the lower hole, and an anchor having excellent reliability that can secure the pullout strength in the temporarily fixed state can be provided.
(3) Since the diameter of the annular temporary fixing member is increased by the annular pressing member screwed to the temporary fixing bolt, a certain pulling strength can be secured by managing the tightening torque of the temporary fixing bolt. An anchor having excellent reliability that can reduce variation can be provided.

According to invention of Claim 3, in addition to the effect of Claim 2, it has the following effects.
(1) When the temporary fixing bolt is tightened by having one or more inclined portions in which the lower end of the embedded portion, the upper and lower surfaces of the annular temporary fixing member, and the upper surface of the annular pressing member are inclined at equal angles, respectively. The annular pressing member does not rotate together, the annular temporary fixing member can be reliably compressed and expanded in diameter, and the outer periphery of the annular temporary fixing member can be reliably brought into contact with the hole wall of the lower hole. It is possible to provide an anchor excellent in workability capable of temporarily fixing the anchor to the prepared hole.

According to invention of Claim 4, in addition to the effect of Claim 2 or 3, it has the following effects.
(1) When the male screw part of the temporary fixing bolt is a reverse screw, when fixing the temporary fixing bolt while holding the female screw part of the embedded part by screwing, the fixing direction and temporary fixing of the embedded part Since the bolt tightening direction is reversed, the temporary fixing bolt can be securely tightened, and the annular pressing member can be reliably compressed and expanded in diameter by the annular pressing member. An anchor excellent in workability can be provided in which the outer periphery of the member can be reliably brought into contact with the hole wall of the lower hole, and the anchor can be temporarily fixed in the lower hole.

According to the invention described in claim 5, in addition to the effect of claim 1, the following effect is obtained.
(1) The temporary fixing female thread portion is formed in communication with the female screw portion with a diameter smaller than the inner diameter of the female screw portion, and the diameter expanding means is screwed into the temporary fixing female screw portion and is drilled in the center of the annular temporary fixing member. Since it has a male screw portion for temporary fixing inserted through the provided through-hole and a circular pressing portion disposed at the lower end of the male screw portion for temporary fixing and in contact with the lower surface of the annular temporary fixing member, the male screw portion for temporary fixing The circular pressing portion disposed at the lower end of the temporary fixing male screw portion can be reliably raised along the temporary fixing female screw portion only by rotating the temporary fixing male screw portion, and the annular temporary fixing member is formed by the embedded portion and the circular pressing portion. Workability can be expanded by compressing in the vertical direction across the ring, the outer periphery of the annular temporary fixing member can be brought into contact with the hole wall of the lower hole, and the anchor can be temporarily fixed in the lower hole An excellent anchor can be provided.
(2) The temporary fixing female threaded portion is formed in communication with the female threaded portion with a diameter smaller than the inner diameter of the female threaded portion, and the diameter expanding means is screwed into the temporary fixing female threaded portion and drilled in the center of the annular temporary fixing member Since it has a male screw part for temporary fixing inserted through the provided through hole and a pin that is inserted into the lower end of the male screw part for temporary fixing and fixed to the lower end part of the member for annular temporary fixing, the member for annular temporary fixing and the pin By arranging an annular member such as a washer between the two, the annular member such as a washer disposed at the lower end of the temporary fixing male screw portion can be securely fixed by simply rotating the temporary fixing male screw portion. And can be expanded in the vertical direction by sandwiching the annular temporary fixing member between the embedded portion and the annular member, and the outer periphery of the annular temporary fixing member is formed as a hole wall in the lower hole. The anchor can be temporarily fixed to the pilot hole. Workability that can, it is possible to provide an excellent anchor productivity.
(3) Since the annular temporary fixing member is compressed in the vertical direction by being sandwiched between the lower end of the embedded portion and the annular member such as a circular pressing portion or a washer, the entire upper and lower surfaces of the annular temporary fixing member are uniformly compressed and expanded. Providing an anchor with excellent reliability that can be made to have a diameter, the outer periphery of the annular temporary fixing member can be evenly brought into contact with the hole wall of the lower hole, and the pullout strength in the temporarily fixed state can be secured. can do.
(4) Since the diameter of the annular temporary fixing member is increased by an annular member such as a circular pressing portion or a washer disposed on the temporary fixing male screw portion, a certain pull-out is achieved by managing the tightening torque of the temporary fixing male screw portion. It is possible to provide an anchor with excellent reliability that can ensure strength and can reduce variations in pull-out strength.

According to invention of Claim 6, in addition to the effect of Claim 5, it has the following effects.
(1) The temporary fixing female screw portion of the embedded portion and the temporary fixing female screw portion of the diameter expanding means are reverse screws, so that the female screw portion of the embedded portion is held by screwing and the temporary fixing female screw portion is tightened. At this time, since the fixing direction of the embedded portion and the tightening direction of the temporary fixing female screw portion are reversed, the temporary fixing female screw portion can be securely tightened, and the annular temporary fixing member can be surely secured by the annular pressing member. It can be compressed and expanded in diameter, the outer periphery of the annular temporary fixing member can be securely brought into contact with the hole wall of the lower hole, and the anchor can be temporarily fixed in the lower hole. An excellent anchor can be provided.
(2) Since the temporary fixing female screw portion of the buried portion and the temporary fixing female screw portion of the diameter expanding means are reverse screws, the diameter increasing means can be obtained by rotating the temporary fixing female screw portion of the diameter expanding means clockwise. Can be raised along the female threaded portion of the embedded portion, and the annular temporary fixing member can be compressed and expanded in diameter by the circular pressing portion, and the outer periphery of the annular temporary fixing member can be reliably brought into contact with the hole wall of the lower hole. It is possible to provide an anchor excellent in workability capable of temporarily fixing the anchor to the prepared hole.
(3) When the internal fixing screw portion of the buried portion and the internal fixing screw portion of the diameter-expanding means are reverse screws, the lower surface of the fixing bolt is screwed when the fixing bolt is screwed into the internal screw portion of the embedded portion. Even if it comes into contact with the upper surface of the head of the temporary fixing male screw portion of the diameter expanding means, a force is applied in the direction of rotating the temporary fixing male screw portion clockwise to compress the annular temporary fixing member. An anchor excellent in workability and reliability that can prevent temporary fixing by the fixing member from being released can be provided.

According to invention of Claim 7, in addition to the effect of any one of Claims 1 thru | or 6, it has the following effects.
(1) Since protrusions and irregularities are formed on the outer peripheral surface of the embedded portion, the bite between the adhesive filled between the outer periphery of the embedded portion and the hole wall of the lower hole and the outer peripheral surface of the embedded portion It is possible to provide a highly reliable anchor capable of improving the attachment and further strengthening the fixing between the prepared hole of the base material and the embedded portion and improving the bonding strength.

According to invention of Claim 8, in addition to the effect of any one of Claims 1 thru | or 7, it has the following effects.
(1) By having the taper portion formed on the bottom surface of the collar portion, the embedded portion can be easily aligned with the pilot hole of the base material, and when the diameter of the annular temporary fixing member is expanded, Since the outer periphery of the temporary fixing member can be uniformly contacted with the pilot hole of the base material, it is possible to temporarily fix the buried part to the base material with a more reliable workability and reliability. Anchors can be provided.

According to invention of Claim 9, in addition to the effect of any one of Claims 1 thru | or 8, it has the following effects.
(1) By fitting or engaging the anchor holding concave portion drilled on the upper surface of the buttock or the anchor holding convex portion protruding from the upper surface of the buttock with the convex portion or concave portion of the anchor mounting jig, The embedded portion can be easily held, and when temporary fixing is performed by rotating the temporary fixing bolt or the male screw portion for temporary fixing, the embedded portion can be prevented from co-rotating and the annular temporary fixing member can be reliably expanded. It is possible to provide an anchor excellent in workability and reliability that can be made to have a diameter and can be firmly fixed temporarily in the pilot hole of the base material.
(2) When a male screw such as a fixing bolt is screwed into the female screw part, the anchor holding concave part and anchor holding convex part can be held, so that the embedded part can be prevented from rotating together and fixed to the female screw part. It is possible to provide an anchor excellent in fixing reliability capable of reliably and firmly fixing a male screw such as a bolt for use.

According to invention of Claim 10, it has the following effects.
(1) Since there is an adhesive filling step of filling the pilot hole drilled in the base material with an adhesive in the pilot hole drilling step, the outer peripheral surface of the embedded portion of the anchor temporarily fixed in the pilot hole is covered with an adhesive. It is possible to provide a highly reliable anchor temporary fixing method that can be firmly fixed and can improve the pullout strength of the anchor.
(2) Since it has an adhesive filling process that fills the lower hole with an adhesive, the gap between the outer periphery of the anchor and the hole wall of the lower hole can be filled with the adhesive, and rainwater and moisture in the air can enter. Thus, it is possible to provide a method for temporarily fixing an anchor that is excellent in reliability and durability and can prevent corrosion of the anchor.
(3) In the anchor burying step, the anchor buried portion is inserted and embedded in the lower hole, and in the temporary fixing step, the diameter of the annular temporary fixing member is increased by the diameter expanding means, and the outer periphery of the annular temporary fixing member is Since it is brought into contact with the hole wall, the anchor embedded portion can be temporarily fixed to the lower hole of the base material, and the fixing bolt is fixed to the internal thread portion of the embedded portion before the adhesive filled in the adhesive filling process solidifies. Thus, the anchor can be fixed to the base material, and the anchor can be temporarily fixed, and the construction period can be shortened.
(4) The annular temporary fixing member is expanded in diameter by pressing or rotating the diameter expanding means in the temporary fixing step, and the outer periphery of the annular temporary fixing member is brought into contact with the hole wall of the lower hole, so that the base material is burdened. Anchor with excellent workability and reliability that can fix anchors in pilot holes without applying cracks, can prevent cracks from occurring even in places where there are few marginal dimensions It is possible to provide a temporary fixing method.

According to the eleventh aspect of the invention, the following effect is brought about in addition to the effect of the tenth aspect.
(1) As a pre-process or a post-process of the anchor embedding process, the anchor mounting jig mounting process for mounting the anchor mounting jig on the female threaded portion of the anchor, the anchor holding concave portion, or the anchor holding convex portion, Since it has an anchor rotation prevention process that holds the anchor mounting jig and prevents the anchor from rotating, when the diameter expanding means is rotated, the diameter expanding means and the anchor do not rotate together, and the annular It is possible to provide a method for temporarily fixing an anchor having excellent workability and capable of temporarily fixing the anchor by compressing and fixing the fixing member.
(2) When there is an anchor mounting jig mounting step for mounting an anchor mounting jig on the anchor's female thread portion, anchor holding concave portion or anchor holding convex portion as a pre-process of the anchor embedding step, the anchor is embedded in the anchor embedding step. Anchor anchoring method with excellent workability that allows anchors to be held using anchor mounting jigs and allows anchors to be easily embedded when inserting the part through the base material pilot hole Can be provided.

According to invention of Claim 12, it has the following effects.
(1) Since the anchor is embedded and temporarily fixed in a pilot hole drilled in the base material, the object to be fixed is fixed to the base material via the anchor with a fixing bolt screwed into the female thread portion of the anchor. It is possible to provide a temporary fixing structure using an anchor with excellent reliability that can be tightly fixed.
(2) The object to be fixed is fixed to the base material via the anchor by the fixing bolt screwed to the female thread portion of the anchor, so that the adhesive filled in the pilot hole is not completely cured. In addition, it is possible to provide a temporary fixing structure using an anchor excellent in workability that allows the work to proceed without shortening the work period without moving the object to be fixed.
(3) Since the object to be fixed is fixed to the base material via the anchor by the fixing bolt screwed to the female threaded portion of the anchor, the adhesive hardens over time only by leaving it alone. It is possible to provide a temporary fixing structure using an anchor excellent in workability and reliability capable of firmly fixing an object to be fixed and a base material by changing from a fixed state to a fixed state.

According to invention of Claim 13, it has the following effects.
(1) Since it has a rotation-preventing male threaded portion that is screwed into the female threaded portion of the anchor, it can be easily threaded and fixed to the female threaded portion of the anchor manually or with a tool, and the diameter expanding means of the anchor is rotated. At this time, the diameter expansion means and the anchor do not rotate together, the annular temporary fixing member can be reliably compressed and expanded in diameter, and the anchor can be temporarily fixed. A jig can be provided.
(2) Since it has a non-rotating head formed on the top of the non-rotating male screw part, the anti-rotating head can be easily and securely held with a tool or the like, and an anchor can be attached to improve workability. A jig can be provided.
(3) Since it has a tool insertion hole drilled through the non-rotating male screw part and the non-rotating head part, the tool can be inserted into the tool insertion hole even when a tool is required to rotate the diameter expanding means of the anchor. It is possible to provide an anchor mounting jig excellent in workability and versatility that can be easily inserted through the diameter of the diameter expanding means.

According to the invention described in claim 14, in addition to the effect of claim 13, the following effect is obtained.
(1) Since the gripping part is connected to the detent head, the gripping part can be turned manually without using a tool when attaching the anchor mounting jig to the anchor. It is possible to provide an anchor mounting jig excellent in workability, in which the rotation-preventing male screw portion of the jig for use and the female screw portion of the anchor can be easily screwed together and fixed.
(2) Since the detent head has a gripping part, the anchor can be inserted through the pilot hole of the base material by grasping the gripping part, and it has excellent functionality that can improve the workability of the anchor embedding process An anchor mounting jig can be provided.
(3) Since the detent head has a grip part, the anchor can be fixed by gripping the grip part or pressing the grip part against the base material after embedding the anchor in the pilot hole of the base material. It is possible to provide an anchor mounting jig excellent in workability and reliability that can prevent the anchor from co-rotating during temporary fixing.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment 1)
FIG. 1 (a) is a side view showing an anchor according to Embodiment 1 of the present invention, and FIG. 1 (b) is a cross-sectional side view showing the anchor according to Embodiment 1 of the present invention.
In FIG. 1, 1 is the anchor in the first embodiment, 2 is made of iron products such as stainless steel, chrome steel, steel, cast steel, cast iron, carbon steel, and metal such as aluminum alloy, carbon fiber, boron fiber, and glass. An embedded portion of an anchor 1 molded with organic or inorganic fibers such as fibers and metal fibers and a synthetic resin, 2a is a flange formed on the outer periphery of the upper end of the embedded portion 2, and 2b is formed on the bottom surface of the flange 2a. The taper part, 2c is a spiral groove formed on the outer peripheral surface of the embedded part 2, 2d is an inclined part formed on the lower end side of the embedded part 2, and 3a is an embedded part parallel to the longitudinal direction of the axis of the embedded part 2 A female threaded portion 3b formed from the upper end of 2 to a predetermined depth, 3b is a counterbore formed at the lower portion of the female threaded portion 3a, and 3c is drilled to the lower end of the embedded portion 2 through the counterbored portion 3b. The inserted insertion hole 4 is inserted into the insertion hole 3b of the buried portion 2. A temporary fixing bolt 4b, which is passed through the head 4a and rotatably locked by the head 4a, is formed on the head 4a of the temporary fixing bolt 4 and is used to rotate the temporary fixing bolt 4. One-letter or ten-letter, hexagonal or star-shaped tool-fitting recess into which a tool such as a wrench is fitted, 4c is a male threaded portion of a temporary fixing bolt 4, and 5 is equiangular with an inclined portion 2d of an embedded portion 2. An annular temporary fixing member 5c, in which a temporary fixing bolt 4 is inserted into a through hole 5b which is in contact with the inclined portion 2d of the embedded portion 2 by an inclined upper surface inclined portion 5a and is drilled in the center, is designated as 5c. The lower surface inclined portion 6 is formed at an equal angle with the upper surface inclined portion 5a on the lower surface, and 6 is a pressing inclined portion 6a inclined at an equal angle with the lower surface inclined portion 5c of the annular temporary fixing member 5 of the annular temporary fixing member 5. The external thread portion 4 of the temporary fixing bolt 4 is in contact with the internal thread portion 6b for screwing and is in contact with the lower inclined portion 5c. Annular pressing member but screwed, 6c is a helical groove formed on the outer peripheral surface of the annular pressing member 6.

Since the insertion hole 3c of the embedded portion 2 through which the male screw portion 4c of the temporary fixing bolt 4 is inserted is formed with a smaller diameter than the inner diameter of the female screw portion 3a, the head 4a of the temporary fixing bolt 4 is connected to the upper surface of the insertion hole 3c. The temporary fixing bolt 4 can be rotatably held.
Further, since the head 4a of the temporary fixing bolt 4 is formed to be thinner than the depth of the counterbore 3b, the head 4a does not protrude toward the female thread 3a side of the embedded part 2 and is screwed to the female thread 3a. The fixing bolt and the head 4a of the temporary fixing bolt 4 do not interfere with each other, and the anchor 1 can be prevented from being damaged.
The head 4a of the temporary fixing bolt 4 has a tool fitting recess 4b such as a single letter, a cross, a hexagon or a star, so that the temporary fixing bolt 4 can be easily turned using a general-purpose tool such as a screwdriver or a wrench. Can be moved.
Since the lower surface inclined portion 5c of the annular temporary fixing member 5 and the pressing inclined portion 6a of the annular pressing member 6 are formed at an equal angle and are in contact with each other, when the temporary fixing bolt 4 is rotated, it is temporarily fixed. Since the bolt 4 and the annular pressing member 6 do not rotate together, the annular pressing member 6 can be raised along the male screw portion 4c of the temporary fixing bolt 4, and the annular temporary fixing member 5 can be reliably compressed. .
Since the upper surface inclined portion 5a and the lower surface inclined portion 5c of the annular temporary fixing member 5 are formed at equal angles and in parallel, the width of the annular temporary fixing member 5 is uniform and can be uniformly deformed during compression.

The temporary fixing structure using the anchor of Embodiment 1 formed as described above will be described with reference to the drawings.
FIG. 2 is a cross-sectional side view of an essential part showing a temporary fixing structure using the anchor according to the first embodiment.
In FIG. 2, 10 is a base material such as a foundation, wall, or pillar formed of concrete, mortar, or a block, 10a is a base material surface, 11 is drilled perpendicular to the base material surface 10a, and anchor 1 is embedded. The temporarily fixed lower hole, 11a is the hole wall of the lower hole 11, 11b is the opening peripheral edge of the lower hole 11 where the tapered portion 2b of the collar 2a of the anchor 1 is locked, and 12 is filled in and buried in the lower hole 11. An organic or inorganic adhesive filling the space between the spiral groove 2c on the outer peripheral surface of the part 2 and the hole wall 11a of the lower hole 11, 13 is a fixing bolt screwed into the female thread part 3a of the anchor 1, and 14 is The fixing bolt 13 is inserted into the fixing hole 14a and the object to be fixed installed on the base material surface 10a of the base material 10, 14b is a counterbore formed on the back surface of the fixing object 14, and 15 is inserted into the fixing bolt 13. The washer 16 is screwed onto the fixing bolt 13 and attached to the base material 10. A fixing nut for fixing the fixture 14.
When the counterbore 14b is not formed on the back surface of the fixed object 14, a counterbore is formed on the outer periphery of the pilot hole 11 of the base material surface 10a, and the upper surface of the flange 2a and the base material surface 10a are flush with each other. Like that. Thereby, there is no unevenness | corrugation in the base material surface 10a, the to-be-fixed object 14 can be reliably supported by the whole surface of the base material surface 10a, and it is excellent in fixing stability.

The temporary fixing structure using the anchor of the first embodiment configured as described above will be described below with reference to the drawings.
FIG. 3A is a cross-sectional side view of the main part showing the pilot hole drilling process of the temporary fixing method, and FIG. 3B is a cross-sectional side view of the main part showing the adhesive filling process of the temporary fixing method. 3 (c) is a cross-sectional side view of a main part showing an anchor embedding step of a temporary fixing method.
First, in the pilot hole drilling step, as shown in FIG. 3A, the pilot hole 11 perpendicular to the base material surface 10a of the base material 10 is drilled using a tool such as a hammer drill. The hole diameter of the lower hole 11 is larger than the outer diameter of the embedded portion 2 of the anchor 1 and the annular temporary fixing member 5 and smaller than the flange portion 2 a of the embedded portion 2. Thereby, in the anchor embedment process in the subsequent process, when the embedded portion 2 of the anchor 1 is inserted into the lower hole 11, the embedded portion 2 and the annular temporary fixing member 5 are caught or scraped by the hole wall 11 a of the lower hole 11. In addition, the anchor portion 2a of the embedded portion 2 can be locked to the base material surface 10a and the tapered portion 2b of the flange portion 2a can be brought into contact with the opening peripheral edge portion 11b of the lower hole 11 to position the anchor 1. The embedded portion 2 can be stably held in the prepared hole 11 (see FIG. 3C).

Next, as a subsequent process of the pilot hole drilling process, a pilot hole cleaning process is performed in which chips, moisture, and the like accumulated in the pilot hole 11 are removed by a brush, a blower, or the like. Accordingly, the embedded portion 2 of the anchor 1 can be easily inserted into the pilot hole 11 so that the embedded portion 2 can be reliably embedded to a predetermined depth, and the adhesive 12 that is filled in the subsequent adhesive filling step can be used. The outer peripheral surface of the embedded portion 2 can be covered without any spots, the pullout strength of the anchor 1 can be ensured, and the reliability can be improved.
In addition, when the pilot hole drilling step is performed in advance in a factory or the like, the processing accuracy of the pilot hole 11 is excellent, the number of work steps at the site can be reduced, and productivity can be improved.
Moreover, you may provide the roughening process of the rough hole which roughens the surface by shaving the hole wall 11a (inner peripheral surface) of the rough hole 11 with a wire brush etc. in the rough hole drilling process. By mounting and rotating a shaft portion such as a wire brush on a power tool such as a drill, the hole wall 11a of the lower hole 11 can be easily cut. By roughening the hole wall 11a of the lower hole 11 to form irregularities, the adhesive 12 filled in the lower hole 11 and the surface of the hole wall 11a of the lower hole 11 are improved, and the anchor after the adhesive is cured The pull-out strength of 1 can be effectively improved.

  Next, in the adhesive filling step, as shown in FIG. 3 (b), the adhesive 12 is filled into the pilot hole 11, and in the anchor embedding step, as shown in FIG. The embedded portion 2 is inserted through the prepared hole 11. By inserting the embedded portion 2 of the anchor 1 into the lower hole 11, the adhesive 12 spreads between the spiral groove 2 c on the outer peripheral surface of the embedded portion 2 and the hole wall 11 a of the lower hole 11 and is filled without a gap. . By forming the spiral grooves 2 c and 6 c on the outer peripheral surfaces of the embedded portion 2 and the annular pressing member 6, the adhesion area can be expanded and the anchor effect after the adhesive 12 is cured can be improved. The spiral groove 6c on the outer peripheral surface of the annular pressing member 6 may not be provided.

Next, the anchor mounting jig that is inserted into the anchor in the anchor mounting jig mounting step and holds the anchor in the anchor detent step will be described.
4A is a cross-sectional side view showing the anchor mounting jig, and FIG. 4B is a rear view of the anchor mounting jig.
In FIG. 4, reference numeral 20 denotes an anchor mounting jig that is screwed to the female thread portion 3 a of the anchor 1 by a rotation-preventing male thread portion 21 in the anchor mounting jig mounting step, and 22 is an anchor mounting jig that holds the anchor 1 in the anchor rotation stopping process. A detent head 23 formed on the upper part of the non-rotating male screw portion 21 of the mounting jig 20 is formed integrally with the detent head 22 radially outward from the center side of the detent head 22. The holding portion of the anchor mounting jig 20, 23 a is a support protrusion of the anchor mounting jig 20 formed to protrude from the lower surface of the gripping portion 23, and 24 penetrates the non-rotating male screw portion 21 and the non-rotating head portion 22. This is a tool insertion hole for the anchor mounting jig 20 drilled.

Next, the anchor mounting jig mounting step and the temporary fixing step will be described.
FIG. 5 is a cross-sectional side view of an essential part showing a temporary fixing step of the temporary fixing method.
In FIG. 5, 25 is inserted from the tool insertion hole 24 of the anchor mounting jig 20 and is fitted into the tool fitting recess 4 b formed in the head 4 a of the temporary fixing bolt 4 to rotate the temporary fixing bolt 4. A tool 30 used for a temporary fixing process, such as a hexagon wrench, is provided between the upper surface of the flange 2a of the anchor 1 and the bottom surface of the detent head 22 of the anchor mounting jig 20, and is a pilot hole of the base material 10. 11 is a synthetic resin protective sheet for preventing the adhesive 12 filled in 11 from adhering to the anchor mounting jig 20 when the base material surface 10 a overflows, and 30 a is embedded in the substantially central portion of the protective sheet 30. This is an insertion hole formed with a larger hole diameter than the inner diameter of the second female screw portion 3a.

First, in the anchor mounting jig mounting step, the female thread portion of the anchor 1 so that the protective sheet 30 is sandwiched between the upper surface of the flange portion 2a of the anchor 1 and the bottom surface of the detent head 22 of the anchor mounting jig 20. The non-rotating male screw portion 21 of the anchor mounting jig 20 is screwed to 3a.
Since the anchor mounting jig 20 has the gripping portion 23, the gripping portion 23 is manually rotated without using a special tool or the like, so that the female screw portion 3a of the anchor 1 and the anchor mounting jig 20 are prevented from rotating. The male screw portion 21 can be attached and detached.
The shape of the protective sheet 30 is formed in a circular shape or a rectangular shape excellent in productivity, but may be any shape as long as it is larger than the outer diameter of the flange portion 2a and can prevent the adhesive 12 from adhering. Since the hole diameter of the insertion hole 30a of the protective sheet 30 is formed larger than the inner diameter of the female screw portion 3a of the embedded portion 2, the anchor mounting jig 20 can be attached to the female screw portion 3a via the protective sheet 30. In the subsequent temporary fixing step, the tool 25 can be inserted through the insertion hole 30a and the temporary fixing bolt 4 can be rotated.
In the present embodiment, the anchor mounting jig mounting step is performed as a post-process of the anchor embedding step, but may be performed as a pre-process of the anchor embedding step. When the anchor mounting jig mounting step is performed as a pre-process of the anchor embedding process, the anchoring jig 20 is gripped by the gripping portion 23 of the anchor mounting jig 20 so that the embedded portion 2 of the anchor 1 is embedded in the prepared hole 11. And workability can be improved.

Next, in the temporary fixing step, an anchor detent step for holding the grip portion 23 of the anchor attachment jig 20 and preventing the anchor 1 from rotating is performed, and then the tool 25 is used as the tool of the anchor attachment jig 20. By inserting the tip of the tool 25 into the tool fitting recess 4b formed in the head 4a of the temporary fixing bolt 4 through the insertion hole 24 and rotating the temporary fixing bolt 4, an annular pressing member 6 is raised along the temporary fixing bolt 4, the annular temporary fixing member 5 is compressed in the vertical direction and the diameter thereof is expanded, and the outer periphery of the annular temporary fixing member 5 is brought into contact with the hole wall 11 a of the lower hole 11. Perform temporary fixing.
Since the supporting protrusion 23a protrudes from the bottom surface of the gripping portion 23 of the anchor mounting jig 20, the gripping portion 23 is pressed against the base material surface 10a of the base material 10 in the anchor detent process and the temporary fixing process. Thus, the anchor mounting jig 20 can be held and the workability is excellent.

In particular, when the support protrusion 23a is formed of an elastic body such as synthetic rubber, the bottom surface of the support protrusion 23a is reliably pressed against the base material surface 10a without being affected by irregularities or steps of the base material surface 10a. The anchor 1 can be prevented from being lifted.
In the present embodiment, the grip portion 23 of the anchor mounting jig 20 is formed in one character, but it may be formed in a T shape or a cross. Further, instead of forming the supporting protrusions 23a entirely with an elastic body, an elastic body may be attached to the bottom surface formed of metal or the like.
The protective sheet 30 may be removed after the temporary fixing step is finished and the anchor mounting jig 20 is removed, or may be left as it is.

Next, a modification of the anchor mounting jig will be described.
FIG. 6A is a plan view showing a modification of the anchor mounting jig, and FIG. 6B is a sectional side view showing a modification of the anchor mounting jig.
The modified example of the anchor mounting jig in FIG. 6 is different from the anchor mounting jig in the first embodiment in that the anchor mounting jig 20a rotates and holds the detent head 22a manually. Instead of having 23, the non-rotating head 22a is formed in a hexagonal shape, and the washer 22b is disposed at the bottom of the non-rotating head 22a.
Since the non-rotating head portion 22a is formed in a hexagonal shape, the anchor mounting jig 20a can be held with a tool such as a wrench or spanner to prevent the anchor 1 from rotating, and the diameter of the anchor 1 and the anchor 1 can be increased. Thus, it is possible to prevent the temporary fixing bolt 4 from rotating together.
Further, by providing the washer portion 22b, the washer portion 22b is brought into contact with the flange portion 2a of the anchor 1 when the rotation-preventing male screw portion 21 of the anchor mounting jig 20a is screwed to the female screw portion 3a of the anchor 1. The anchor mounting jig 20a can be reliably and stably fixed to the female thread portion 3a of the anchor 1.

As described above, the anchor according to Embodiment 1 has the following effects.
(1) Since the flange portion 2a is formed on the outer periphery of the upper end of the embedded portion 2, the embedded portion 2 can be held by locking the flange portion 2a to the opening peripheral edge portion 11b of the base material surface 10a. 11, the anchor 1 is not buried, and only the buried portion 2 can be reliably buried in the prepared hole 11, so that the anchor 1 can be temporarily fixed.
(2) Since it has the collar part 2a formed in the upper-end outer periphery of the embedment part 2, when inserting the embedment part 2 into the lower hole 11 of the base material 10, the burial part 2 is used as a pilot hole. 11 and is excellent in workability.
(3) An anchor embedded and temporarily fixed in the lower hole 11 by having a female screw portion 3a formed from the upper end of the embedded portion 2 to a predetermined depth in the center of the embedded portion 2 in parallel with the longitudinal direction of the shaft core. Since the fixing bolt 13 can be screwed into the fixing member 14, the fixing bolt 13 can be inserted into the fixing hole 14 a of the fixed object 14 and the fixed object 14 can be fixed to the base material 10.
(4) By having an annular temporary fixing member 5 disposed at the lower end of the embedded portion 2 and a temporary fixing bolt 4 as a diameter expanding means for expanding the annular temporary fixing member 5, the annular temporary fixing member 5 is provided. Since the outer periphery of the member 5 can be brought into contact with the hole wall 11 a of the lower hole 11, the anchor 1 can be temporarily fixed to the lower hole 11 without imposing a burden on the base material 10, and there is little marginal dimension. However, the anchor 1 can be reliably constructed.
(5) By expanding the diameter of the annular temporary fixing member 5, the outer periphery of the annular temporary fixing member 5 is brought into contact with the hole wall 11 a of the lower hole 11. The hole wall 11a can be pressed, and a certain pulling strength can be secured in the temporarily fixed state.
(6) Since the anchor 1 can be temporarily fixed to the lower hole 11 of the base material 10 by the annular temporary fixing member 5, before the adhesive 12 is completely solidified and the anchor 1 is fixed, the female thread portion of the embedded portion 2 Even if the fixing bolt 13 is screwed to 3a, the anchor 1 does not rotate together, and the fixing bolt 13 can be securely fixed to the female screw portion 3a, and the fixing work of the base material 10 and the fixed object 14 can be performed. It can be performed.
(7) Since the anchor 1 is temporarily fixed to the lower hole 11 of the base material 10 by the annular temporary fixing member 5, and the outer periphery of the embedded portion 2 is fixed by the adhesive 12, the tensile strength of the anchor 1 is improved. It is possible to reduce the variation in the drawing strength.
(8) The embedded portion 2 has an insertion hole 3b that communicates with the female screw portion 3a of the embedded portion 2 and is drilled to the lower end of the embedded portion 2, and the temporary fixing bolt 4 as the diameter expanding means is inserted into the insertion hole. 3b and a temporary fixing bolt 4 inserted through a through hole 5b drilled in the center of the annular temporary fixing member 5 and rotatably supported by the embedded portion 2, and a male screw portion 4c of the temporary fixing bolt 4 By having the annular pressing member 6 that is brought into contact with the lower surface of the annular temporary fixing member 5, the embedded portion 2 is embedded in the lower hole 11 formed in the base material 10, and the tool 25 such as a hexagon wrench is used to temporarily By simply rotating the fixing bolt 4, the annular pressing member 6 screwed into the male screw portion 4 c of the temporary fixing bolt 4 can be moved upward along the male screw portion 4 c of the temporary fixing bolt 4. Between the lower end of the embedded portion 2 and the annular pressing member 6 inserted through the male screw portion 4c of the fixing bolt 4 Since the annular temporary fixing member 5 sandwiched between the annular temporary fixing members 5 can be compressed up and down, the diameter of the annular temporary fixing member 5 can be increased. The anchor 1 can be temporarily fixed to the prepared hole 11.
(9) Since the annular temporary fixing member 5 is sandwiched between the lower end of the embedded portion 2 and the annular pressing member 6 and compressed in the vertical direction, the entire upper and lower surfaces of the annular temporary fixing member 5 are uniformly compressed and expanded in diameter. The outer circumference of the annular temporary fixing member 5 can be evenly brought into contact with the hole wall 11a of the lower hole 11, and the pull-out strength in the temporarily fixed state can be ensured.
(10) Since the diameter of the annular temporary fixing member 5 is increased by the annular pressing member 6 screwed to the temporary fixing bolt 4, a certain pulling strength can be secured by managing the tightening torque of the temporary fixing bolt 4. The variation in the pulling strength can be reduced.
(11) Since the insertion hole 3c drilled in communication with the female screw portion 3a of the embedded portion 2 is formed with a smaller diameter than the inner diameter of the female screw portion 3a, the head 4a of the temporary fixing bolt 4 is inserted into the insertion hole 3c. Since it can be locked at the upper end, the temporary fixing bolt 4 can be rotatably supported only by inserting the temporary fixing bolt 4 from the female threaded portion 3a side of the embedded portion 2 into the insertion hole 3c. Can be temporarily fixed.
(12) By forming the counterbored portion 3b below the female screw portion 3a, the head 4a of the temporary fixing bolt 4 does not protrude toward the female screw portion 3a side of the embedded portion 2, and is screwed into the female screw portion 3a. The fixing bolt 13 and the head 4a of the temporary fixing bolt 4 do not interfere with each other, and the anchor 1 can be prevented from being damaged.
(13) The temporary fixing bolt 4 is turned with a tool 25 such as a screwdriver or a wrench by forming a tool fitting recess 4b such as a single letter, a cross, a hexagon or a star in the head 4a of the temporary fixing bolt 4. The temporary fixing bolt 4 can be easily tightened or loosened, and the diameter expansion amount of the annular temporary fixing member 5 can be adjusted.
(14) The inclined portion 2d formed at the lower end of the embedded portion 2, the upper surface inclined portion 5a, the lower surface inclined portion 5c of the annular temporary fixing member 5, and the pressing inclined portion 6a of the annular pressing member 6 are inclined at equal angles. Therefore, when the temporary fixing bolt 4 is tightened, the annular pressing member 6 does not rotate together, and the annular temporary fixing member 5 can be reliably compressed and expanded in diameter. The outer periphery of the member 5 can be reliably brought into contact with the hole wall 11 a of the lower hole 11, and the anchor 1 can be temporarily fixed to the lower hole 11.
(15) Since the spiral groove 2 c is formed on the outer peripheral surface of the embedded part 2, the adhesive 12 filled between the outer periphery of the embedded part 2 and the hole wall 11 a of the lower hole 11 and the outer peripheral surface of the embedded part 2 And the fixing between the prepared hole 11 of the base material 10 and the embedded portion 2 can be made stronger.
(16) By having the tapered portion 2b formed on the bottom surface of the flange portion 2a, the embedded portion 2 can be easily aligned with the lower hole 11 of the base material 10, and the annular temporary fixing member 5 is expanded. Since the outer periphery of the annular temporary fixing member 5 can be evenly brought into contact with the lower hole 11 of the base material 10 when the diameter is increased, the embedded portion 2 is temporarily attached to the lower hole 11 of the base material 10 more reliably. Can be fixed.

The temporary fixing structure using the anchor in the first embodiment has the following effects.
(17) Since the anchor 1 is embedded and temporarily fixed in the lower hole 11 formed in the base material 10, the anchor 1 is screwed to the fixing bolt 13 and the fixing bolt 13 that are screwed to the female thread portion 3 a of the anchor 1. The fixed object 14 can be tightly fixed to the base material 10 via the anchor 1 by the fixing nut 16 thus formed.
(18) The fixed object 14 is fixed to the base material 10 via the anchor 1 by the fixing bolt 13 screwed to the female thread portion 3 a of the anchor 1 and the fixing nut 16 screwed to the fixing bolt 13. Therefore, even if the adhesive 12 filled in the lower hole 11 is not completely cured, the fixed object 14 does not move, the work can be advanced, and the construction period can be shortened.
(19) The fixed object 14 is fixed to the base material 10 via the anchor 1 by the fixing bolt 13 screwed to the female thread portion 3a of the anchor 1 and the fixing nut 16 screwed to the fixing bolt 13. Therefore, the adhesive 12 is hardened with the lapse of time just by leaving it, and the anchor 1 is changed from the temporarily fixed state to the fixed state, so that the fixed object 14 and the base material 10 can be firmly fixed.

The anchor mounting jig according to Embodiment 1 has the following effects.
(20) Since the anchor mounting jigs 20 and 20a have the rotation-preventing male screw portion 21 screwed into the female screw portion 3a of the anchor 1, they can be easily screwed and fixed to the female screw portion 3a of the anchor 1 by hand. When the temporary fixing bolt 4 as a means for expanding the diameter of the anchor 1 is rotated, the temporary fixing bolt 4 and the embedded portion 2 of the anchor 1 do not rotate together, and the annular temporary fixing member is surely provided. 5 can be compressed and expanded in diameter, and the anchor 1 can be temporarily fixed.
(21) Since the anchor mounting jigs 20 and 20a have the tool insertion holes 24 drilled through the non-rotating male screw portion 21 and the non-rotating head portion 22, the temporary fixing bolt 4 of the anchor 1 is rotated. In doing so, the tool 25 can be inserted through the tool insertion hole 24 and easily rotated.
(22) The anti-rotation male screw portion 21 and the anti-rotation so that the tool insertion hole 24 penetrating the anti-rotation male screw portion 21 and the anti-rotation head portion 22 of the anchor mounting jigs 20 and 20a communicates with the internal screw portion 3a of the anchor 1 By drilling along the axis of the head 22, the shaft of the tool 25 such as a screwdriver or a wrench formed in a substantially L-shape or a T-shape is passed from the tool insertion hole 24 to the female thread portion of the anchor 1. 3a, and the tip of the tool 25 can be rotated by engaging with the tool fitting recess 4b formed on the head 4a of the temporary fixing bolt 4 so that the temporary fixing operation can be easily performed. be able to.
(23) Since the anchor mounting jig 20 has the gripping portion 23 that rotates and holds the rotation-preventing head 22 manually, a tool is not used when mounting the anchor mounting jig 20 to the anchor 1. The locking male screw portion 21 of the anchor mounting jig 20 and the female screw portion 3a of the anchor 1 can be easily screwed together.
(24) Since the anchor mounting jig 20 has the gripping portion 23 on the non-rotating head 22, the anchor 1 can be inserted through the pilot hole 11 of the base material 10 by gripping the gripping portion 23. The workability can be improved.
(25) Since the anchor mounting jig 20 has the gripping portion 23 in the detent head 22, after the anchor 1 is embedded in the lower hole 11 of the base material 10, the gripping portion 23 is gripped or the gripping portion 23 is By anchoring against the base material surface 10a of the base material 10, the anchor 1 can be fixed, and the anchor 1 can be prevented from rotating together during temporary fixing.

The temporary anchor fixing method according to Embodiment 1 has the following effects.
(26) Since there is a pilot hole drilling step of drilling the pilot hole 11 in the base material 10, the pilot hole 11 can be drilled according to the length of the buried part 2 of the anchor 1, and the buried part 2 Protrusion from the base material surface 10a can be prevented, and the base material 10 and the fixed object 14 can be reliably fixed.
(27) As a post-process of the pilot hole drilling process, by performing a pilot hole cleaning process for removing chips accumulated in the pilot hole 11 with a brush, a blower, or the like, the embedded portion of the anchor 1 in the pilot hole 11 2 can be easily inserted to ensure that the embedded portion 2 can be embedded to a predetermined depth, and the outer peripheral surface of the embedded portion 2 can be covered with the adhesive 12 filled in the subsequent adhesive filling step. The pullout strength of the anchor 1 can be ensured, and the reliability can be improved.
(28) Since the adhesive filling step for filling the adhesive hole 12 with the adhesive hole 11 is provided, the outer peripheral surface of the embedded portion 2 of the anchor 1 temporarily fixed to the pilot hole 11 can be firmly fixed with the adhesive agent 12. The pull-out strength of the anchor 1 can be improved.
(29) Since there is an adhesive filling step for filling the lower hole 11 with the adhesive 12, the gap between the outer periphery of the anchor 1 and the hole wall 11a of the lower hole 11 can be filled with the adhesive 12, and in rainwater or in the air It is possible to prevent the intrusion of moisture, to prevent the anchor 1 from being corroded, and to improve the durability.
(30) In the anchor burying step, the embedded portion 2 of the anchor 1 is inserted and embedded in the pilot hole 11 and the temporary fixing bolt 4 as a diameter expanding means is expanded in diameter by the temporary fixing step. Since the outer periphery of the annular temporary fixing member 5 is brought into contact with the hole wall 11a of the lower hole 11, the embedded portion 2 of the anchor 1 can be temporarily fixed to the lower hole 11 of the base material 10 and filled in the adhesive filling process. Before the adhesive 12 is solidified, the fixing bolt 13 can be screwed onto the female screw portion 3 a of the embedded portion 2, and the fixed object 14 can be fixed to the base material 10.
(31) Since the diameter of the annular temporary fixing member 5 is increased by the temporary fixing bolt 4 in the temporary fixing step and the outer periphery of the annular temporary fixing member 5 is brought into contact with the hole wall 11a of the lower hole 11, the burden on the base material 10 is increased. The anchor 1 can be temporarily fixed to the lower hole 11 without applying a crack, and the occurrence of cracks and the like can be prevented even in a place where the marginal space is small, so that the anchor 1 can be reliably constructed.
(32) Since the flange portion 2a is formed on the outer periphery of the upper end of the embedded portion 2 of the anchor 1, the flange portion 2a is inserted by inserting the embedded portion 2 until the lower surface of the flange portion 2a contacts the base material surface 10a. It can be locked to the opening peripheral edge portion 11b of the lower hole 11, and the anchor 1 can be supported by the base material surface 10a.
(33) Since the tapered portion 2b is formed on the bottom surface of the flange portion 2a, the center of the lower hole 11 and the center of the anchor 1 are automatically aligned, and the tapered portion 2b is opened to the lower hole 11. Since it abuts on the peripheral edge portion 11b and is stably held, workability in the subsequent process can be improved.
(34) There is an anchor mounting jig mounting step for mounting the anchor mounting jigs 20 and 20a on the female thread portion 3a of the anchor 1 as a pre-process or a post-process of the anchor embedding process, and the temporary fixing process is the anchor mounting jig. Since there is an anchor rotation prevention process that holds the tools 20 and 20a and prevents the anchor 1 from rotating, the temporary fixing bolt 4 and the embedded portion 2 of the anchor 1 rotate together when the temporary fixing bolt 4 is rotated. Therefore, the annular temporary fixing member 5 can be reliably compressed and expanded in diameter, and the anchor 1 can be temporarily fixed.
(35) When the anchor mounting jig mounting step of mounting the anchor mounting jigs 20 and 20a on the female threaded portion 3a of the anchor 1 is performed as a pre-process of the anchor embedding process, the embedded portion 2 of the anchor 1 in the anchor embedding process Is inserted into the pilot hole 11 of the base material 10, the anchor 1 can be held using the anchor mounting jigs 20, 20a, and the anchor 1 can be embedded easily.
(36) In the anchor mounting jig mounting step, the anchor mounting jig 20 is screwed so that the protective sheet 30 is sandwiched between the flange portion 2a of the anchor 1 and the anchor mounting jig 20, whereby the mother Even when the adhesive 12 filled in the lower hole 11 of the material 10 overflows the base material surface 10a, the adhesive 12 can be prevented from adhering to the anchor mounting jig 1, and the workability and maintenance are excellent.

(Embodiment 2)
FIG. 7A is a plan view showing an anchor in the second embodiment, and FIG. 7B is a sectional side view showing the anchor in the second embodiment.
In FIG. 7, the anchor in the second embodiment is different from that in the first embodiment in that it has two circular anchor holding recesses 2e drilled in the upper surface of the collar 2a of the anchor 1a and the anchor 1a is buried. The portion 2 has a temporary fixing female screw portion 3d that is smaller than the inner diameter of the female screw portion 3a and communicates with the female screw portion 3a and is formed to the lower end of the embedded portion 2, and the diameter expanding means 26 is the temporary fixing female screw portion 3d. The temporary fixing male screw portion 26a inserted through a through hole 5b formed in the center of the annular temporary fixing member 5 and the lower end of the temporary fixing male screw portion 26a. A point having a circular pressing portion 26b in contact with the lower surface, a tool fitting recess 26c formed on the head of the male screw portion 26a for temporary fixing, into which a tool such as a screwdriver or a wrench is fitted, and the annular temporary fixing member 5 And the circular pressing portion 26 of the diameter expanding means 26 It has been a point having a washer 27 disposed between the.

Since the temporary fixing male screw portion 26a and the circular pressing portion 26b of the diameter expanding means 26 are integrally formed, by rotating the temporary fixing male screw portion 26a, the circular temporary fixing member 5 can be surely secured by the circular pressing portion 26b. Can be compressed and expanded in diameter. Further, since the washer 27 is disposed between the annular temporary fixing member 5 and the circular pressing portion 26b of the diameter expanding means 26, the annular temporary fixing member 5 and the circular pressing portion 26b do not rotate together, The annular temporary fixing member 5 can be reliably compressed and expanded in diameter, and the workability is excellent.
Note that the temporary fixing male screw portion 26a and the circular pressing portion 26b of the diameter expanding means 26 may be fixed by welding or pin fitting instead of being integrally formed, or by annular temporary fixing. When the washer 27 is disposed on the lower surface of the member 5 for use, a pin may be inserted and fixed to the lower end of the male screw portion 26a for temporary fixing instead of the circular pressing portion 26b.

The anchor temporarily fixing method in the second embodiment is the same as that in the first embodiment, and only the anchor mounting jig mounted on the anchor in the anchor mounting jig mounting step is different. explain.
FIG. 8 is a rear perspective view showing the anchor mounting jig.
In FIG. 8, 35 is an anchor mounting jig used in the temporary fixing process of the anchor 1a according to the second embodiment, 35a is a gripping part of the anchor mounting jig 35, and 35b is open at the end of the gripping part 35a. The opening portion 36 of the anchor mounting jig 35 formed as described above is projected from the back surface 35c of the anchor mounting jig 35 on both sides of the opening portion 35b and is fitted into the anchor holding recess 2e of the anchor 1a. It is.

The embedded portion 2 can be held by fitting the convex portion 36 of the anchor attachment jig 35 into the anchor holding concave portion 2e of the anchor 1a. Since only the convex portion 36 is fitted to the anchor holding concave portion 2e, the attachment and detachment is easy and the workability is excellent.
Since the anchor mounting jig 35 has the opening 35b, a tool for rotating the diameter expanding means 26 can be inserted. When the diameter expanding means 26 is rotated and temporarily fixed, the embedded section 2 is shared. Without rotating, the diameter of the annular temporary fixing member 5 can be expanded reliably. Further, when the male screw such as the fixing bolt 13 is screwed into the female screw portion 3a, the embedded portion 2 can be held to prevent co-rotation. Can be fixed to. In particular, since a part of the opening 35b of the anchor mounting jig 35 is opened laterally, the anchor can be easily mounted from the side even after a male screw such as a fixing bolt 13 is screwed to the anchor 1a. The jig 35 can be removed and the workability is excellent.

The anchor 1a can be temporarily fixed using the anchor mounting jig 20 or 20a as in the first embodiment.
At this time, it is preferable that the temporarily fixing female screw portion 3d of the embedded portion 2 and the temporary fixing male screw portion 26a of the diameter expanding means 26 screwed to the temporary fixing female screw portion 3d are reverse screws. When the anchoring male screw portion 21 of the anchor mounting jig 20 or 20a is screwed into the female screw portion 3a of the embedded portion 2 and the anchor 1a is held, the tightening direction of the non-rotating male screw portion 21 and the diameter expanding means 26 This is because the tightening direction is the reverse direction, and the temporarily fixing male thread portion 26a of the diameter expanding means 26 can be securely tightened.

FIG. 9A is a plan view showing a modification of the anchor in the second embodiment, and FIG. 9B is a sectional side view showing a modification of the anchor in the second embodiment.
The modification of FIG. 9 differs from the anchor in the second embodiment in that the anchor 1b has an anchor holding convex portion 2f protruding from the upper surface of the flange portion 2a instead of the anchor holding concave portion 2e.
By forming a pair of parallel portions on the outside of the anchor holding convex portion 2f, the opening portion 35b of the anchor mounting jig 35 or the like is engaged with or fitted to the outside of the anchor holding convex portion 2f so that the embedded portion 2 is formed. It can hold | maintain and can be temporarily fixed similarly to the anchor 1a of Embodiment 2. FIG.
In the present embodiment, a pair of parallel portions is formed outside the anchor holding convex portion 2f. However, the anchor holding convex portion 2f may have an outer shape of a rectangular shape, a hexagonal shape, or the like, or a plurality of pin shapes. These protrusions may be formed in a protruding manner.

As described above, the anchor according to the second embodiment has the following operation in addition to the operation of the first embodiment.
(1) Temporary fixing means in which the diameter expanding means 26 is screwed into a temporary fixing female thread portion 3d formed in the embedded portion 2 and is inserted into a through hole 5b formed in the center of the annular temporary fixing member 5. Since the male screw portion 26a and the circular pressing portion 26b disposed at the lower end of the temporary fixing male screw portion 26a and in contact with the lower surface of the annular temporary fixing member 5, the temporary fixing male screw portion 26a is merely rotated. The circular pressing portion 26b disposed at the lower end of the fixing male screw portion 26a can be reliably raised along the temporary fixing female screw portion 3d, and the annular temporary fixing member 5 is formed by the embedded portion 2 and the circular pressing portion 26b. The diameter of the annular temporary fixing member 5 can be brought into contact with the hole wall 10a of the lower hole 10 and the anchor 1a is temporarily fixed to the lower hole 10. Can do.
(2) Since the annular temporary fixing member 5 is sandwiched between the lower end of the embedded portion 2 and the circular pressing portion 26b and compressed in the vertical direction, the entire upper and lower surfaces of the annular temporary fixing member 5 are uniformly compressed and expanded in diameter. The outer periphery of the annular temporary fixing member 5 can be evenly brought into contact with the hole wall 10a of the lower hole 10, and the pull-out strength in the temporarily fixed state can be ensured.
(3) Since the diameter of the annular temporary fixing member 5 is increased by the circular pressing portion 26b disposed on the temporary fixing male screw portion 26a, a certain pulling strength can be obtained by managing the tightening torque of the temporary fixing male screw portion 26a. Can be ensured, and the variation in the drawing strength can be reduced.
(4) When the washer 27 is disposed between the embedded portion 2 and the annular temporary fixing member 5 or between the annular temporary fixing member 5 and the circular pressing portion 26b, the temporary fixing male screw portion 26a is rotated more smoothly. The workability can be improved.
(5) Since the temporarily fixing female thread portion 3d of the embedded portion 2 and the temporary fixing male thread portion 26a of the diameter expanding means 26 are reverse screws, the temporary fixing female thread portion 3d of the diameter expanding means 26 is rotated clockwise. As a result, the diameter expanding means 26 rises along the female threaded portion 3a of the embedded portion 2, and the circular temporary fixing member 5 can be compressed and expanded in diameter by the circular pressing portion 26b. Since the outer periphery can be reliably brought into contact with the hole wall 10a of the lower hole 10 and the anchor 1a can be temporarily fixed to the lower hole 10, the workability is excellent.
(6) When the temporarily fixing female screw portion 3d of the embedded portion 2 and the temporary fixing male screw portion 26a of the diameter expanding means 26 are reverse screws, the fixing bolt 13 is screwed into the female screw portion 3a of the embedded portion 2. In addition, even if the lower surface of the fixing bolt 13 contacts the upper surface of the head of the temporary fixing male screw portion 26a of the diameter expanding means 26, the temporary fixing male screw portion 26a is rotated clockwise and the annular temporary fixing member 5 is rotated. Since a force is applied in the direction of compressing the ring, it is possible to prevent the temporary fixing by the annular temporary fixing member 5 from being released.
(7) By having at least one of the anchor holding concave portion 2e drilled in the upper surface of the flange portion 2a or the anchor holding convex portion 2f protruding from the upper surface of the flange portion 2a, the anchor holding concave portion 2e The embedded portion 2 can be held by the anchor mounting jig 35 or the like having an opening 35b that is fitted or engaged with the fitting convex portion 36 or the anchor holding convex portion 2f, and the diameter expanding means 26 is temporarily fixed. When the male screw portion 26a is rotated and temporarily fixed, the embedded portion 2 does not rotate together, and the diameter of the annular temporary fixing member 5 can be surely increased. It can be firmly fixed temporarily.
(8) Since the anchor holding recess 2e and the anchor holding projection 2f are provided on the upper surface of the flange portion 2a, the anchor holding recess 2e and the anchor holding are held even when a male screw such as a fixing bolt 13 is screwed to the female screw 3a. The convex portion 2f can be held to prevent the embedded portion 2 from rotating together, and the female screw portion 3a and the male screw such as the fixing bolt 13 can be securely and firmly fixed.
(9) When the temporary fixing female thread portion 3d of the embedded portion 2 and the temporary fixing male screw portion 26a of the diameter expanding means 26 are reverse screws, the female thread portion 3a of the embedded portion 2 is replaced with the anchor mounting jig 20 or 20a, etc. When tightening the temporary fixing male screw portion 26a by holding by screwing, the tightening direction of the female screw portion 3a of the embedded portion 2 and the anchor mounting jig 20 or 20a and the like and the tightening direction of the temporary fixing male screw portion 26a Therefore, the male screw portion 26a for temporary fixing can be securely tightened, and the annular temporary fixing member 5 can be reliably compressed and expanded in diameter by the circular pressing portion 26b. The outer periphery of the member 5 can be reliably brought into contact with the hole wall 10a of the lower hole 10, and the anchor 1a can be temporarily fixed to the lower hole 10.

(Embodiment 3)
FIG. 10A is a plan view showing an anchor embedding process of the anchor temporary fixing method according to the third embodiment, and FIG. 10B is a diagram showing an anchor embedding process of the anchor temporary fixing method according to the third embodiment. FIG.
In FIG. 10, the anchor in the third embodiment is different from that in the first or second embodiment in that the outer shape of the flange portion 2a of the anchor 1c is not circular, and instead of the anchor holding concave portion 2e and the anchor holding convex portion 2f, the flange portion 2a. It is a point which has a pair of parallel parts 2g formed in a part of the outside of the.
As a result, it is possible to hold the embedded portion 2 by engaging a general-purpose tool such as a spanner with the parallel portion 2g of the flange portion 2a without using a dedicated anchor mounting jig 20, 20a, 35, etc. Temporary fixing can be performed similarly to the anchor 1 in the first embodiment or the anchors 1a and 1b in the second embodiment.
In the present embodiment, the pair of parallel portions 2g is formed outside the flange portion 2a. However, the outer shape of the flange portion 2a may be formed in a rectangular shape, a hexagonal shape, or the like.

Next, an anchor temporary fixing method according to the third embodiment will be described.
In FIG. 10, the anchor fixing method in the third embodiment is different from that in the first or second embodiment, in the anchor embedding step, between the lower surface of the flange 2a of the anchor 1c and the base material surface 10a. 30 is disposed. In this case, the embedded portion 2 can be easily inserted by forming the insertion hole 30a of the protective sheet 30 to have a hole diameter equal to or larger than the outer diameter of the embedded portion 2 of the anchor 1c.
Since the protective sheet 30 is formed of soft synthetic rubber, synthetic resin, or the like, the peripheral edge of the insertion hole 30a is deformed so as to follow the tapered portion 2b of the flange portion 2a, and the flange portion 2a and the protective sheet 30 are formed by the tapered surface 30b. It is possible to prevent the adhesive 12 from overflowing from the gap between the outer periphery of the embedded portion 2 and the insertion hole 30a to the surface side of the protective sheet 30, and the workability is excellent. In addition, you may form the taper surface 30b in the insertion hole 30a periphery of the protection sheet 30 previously according to the taper part 2b of the collar part 2a.
Moreover, since the overflow of the adhesive agent 12 can be confirmed visually when the protective sheet 30 is formed of a transparent or translucent material, the filling failure of the adhesive agent 12 can be prevented and the reliability is excellent. .
The anchor 1c can be temporarily fixed using the anchor mounting jig 20 or 20a as in the first embodiment.

As described above, the anchor according to the third embodiment has the following operation in addition to the operation of the first or second embodiment.
(1) By having at least one pair of parallel portions 2g outside the flange portion 2a, the flange portion 2a can be easily grasped with a tool such as a spanner, and the embedded portion 2 is inserted into the lower hole 11 of the base material 10. Therefore, the embedded portion 2 can be fixed, for example, when temporarily fixing with a diameter expanding means, and versatility and workability can be improved.

According to the anchor temporary fixing method in the third embodiment, in addition to the operation in the first embodiment, the following operation is provided.
(2) In the anchor embedding step, the protective sheet 30 is disposed between the lower surface of the flange portion 2a of the anchor 1c and the base material surface 10a, whereby the adhesive 12 filled and overflows in the lower hole 11 of the base material 10. Can be prevented from adhering to the vicinity of the surface of the flange portion 2a and is excellent in workability. In particular, the tapered surface 30b is formed at the periphery of the insertion hole 30a of the protective sheet 30, so that the protective sheet 30 can be closely attached to the tapered portion 2b of the flange portion 2a, and the outer periphery of the embedded portion 2 and the insertion hole 30a. The adhesive 12 can be prevented from overflowing from the gap to the surface side of the protective sheet 30, and the reliability is excellent.

  The present invention relates to an anchor embedded in a base material such as a foundation, a wall, or a pillar formed of concrete, mortar, or a block, for fixing an object to be fixed to the base material, a method for temporarily fixing the anchor, and a temporary method using the anchor. With regard to the fixing structure and anchor mounting jig, it can be easily and reliably temporarily fixed to a base material such as a concrete, mortar, or block, or a base material such as a wall or a pillar, and has excellent workability. It can be firmly fixed without imposing a load, has excellent reliability, can securely fasten the base material to the object to be fixed, and provides an anchor with high pulling strength and excellent durability. Temporary fixing method that can secure workability and reliability in the subsequent process, and workability and production that can securely fix the base material and the object to be fixed in a short time. Excellent temporary Manholes that provide a fixed structure and provide an anchor mounting jig that can be temporarily fixed at the time of anchor construction and can improve workability. It can be suitably used for fixing the receiving frame, and the construction period can be shortened to improve the reliability and durability.

(A) Side view showing anchor in embodiment 1 (b) Cross-sectional side view showing anchor in embodiment 1 Cross-sectional side view of a main part showing a temporary fixing structure using the anchor of the first embodiment (A) Main part cross-sectional side view showing the pilot hole drilling step of the temporary fixing method (b) Main cross-sectional side view showing the adhesive filling step of the temporary fixing method (c) Key point showing the anchor embedding step of the temporary fixing method Sectional side view (A) Cross-sectional side view showing anchor mounting jig (b) Rear view of anchor mounting jig Cross-sectional side view of the main part showing the temporary fixing step of the temporary fixing method (A) Plan view showing a modification of the anchor mounting jig (b) Cross-sectional side view showing a modification of the anchor mounting jig (A) Top view showing anchor in embodiment 2 (b) Cross-sectional side view showing anchor in embodiment 2 Rear side perspective view showing anchor mounting jig (A) Top view showing anchor in embodiment 2 (b) Cross-sectional side view showing anchor in embodiment 2 (A) Plan view showing anchor embedding process of anchor temporary fixing method in embodiment 3 (b) Main part cross-sectional side view showing anchor embedding process of anchor temporary fixing method in embodiment 3

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 1a, 1b, 1c Anchor 2 Buried part 2a Ridge part 2b Tapered part 2c Spiral groove 2d Inclined part 2e Anchor holding recessed part 2f Anchor holding convex part 2g Parallel part 3a Female thread part 3b Counterbore part 3c Insertion hole 3d Temporary fixing female thread part DESCRIPTION OF SYMBOLS 4 Temporary fixing bolt 4a Head 4b Tool fitting recessed part 4c Male thread part 5 Annular temporary fixing member 5a Upper surface inclined part 5b Through hole 5c Lower surface inclined part 6 Annular pressing member 6a Pressing inclined part 6b Screw female thread part 6c Spiral groove DESCRIPTION OF SYMBOLS 10 Base material 10a Base material surface 11 Pilot hole 11a Hole wall 11b Opening peripheral part 12 Adhesive 13 Fixing bolt 14 Fixed object 14a Fixing hole 14b Counterbore 15 Washer 16 Fixing nut 20, 20a, 35 Anchor mounting jig 21 Non-rotating male screw part 22, 22a Non-rotating head part 22b Washer part 23, 35a Grasping part 23a Protrusion for support 24 Tool insertion hole 25 Tool 26 Expanding means 26a Male screw part for temporary fixing 26b Circular pressing part 26c Tool fitting concave part 27 Washer 30 Protection sheet 30a Insertion hole 30b Tapered surface 35b Opening part 35c Back surface 36 Convex part

Claims (14)

  The buried part was buried in a base hole formed in a base material such as a concrete, mortar, or block, or a base material such as a pillar, and filled between the outer periphery of the buried part and the hole wall of the lower hole. An anchor that is fixed by an adhesive and that tightly connects the base material and an object to be fixed, and a flange formed on the outer periphery of the upper end of the embedded portion and a central portion of the embedded portion parallel to the longitudinal direction of the shaft core An internal thread portion formed from the upper end of the embedded portion to a predetermined depth, and an insertion hole formed in the central portion of the embedded portion in parallel to the longitudinal direction of the axial core from the lower end of the embedded portion to a predetermined height, or A temporary fixing internal thread portion formed from the lower end of the embedded portion to a predetermined height parallel to the longitudinal direction of the shaft core in the central portion of the embedded portion; and an annular temporary fixing member disposed at the lower end of the embedded portion; The annular temporary fixing is inserted into the insertion hole or screwed into the temporary fixing female thread portion. Anchor, characterized in that it comprises a diameter means for diameter of the timber, the.   The insertion hole is drilled in communication with the female thread portion of the embedded portion, and the diameter-expanding means is inserted into a through-hole drilled in the center of the insertion hole and the annular temporary fixing member. A temporary fixing bolt that is rotatably supported by the portion, and an annular pressing member that is screwed into a male screw portion of the temporary fixing bolt and is in contact with the lower surface of the annular temporary fixing member. The anchor according to claim 1.   The anchor according to claim 2, wherein a lower end of the embedded portion, upper and lower surfaces of the annular temporary fixing member, and an upper surface of the annular pressing member each include one or more inclined portions inclined at an equal angle. .   The anchor according to claim 2 or 3, wherein the male screw portion of the temporary fixing bolt of the diameter expanding means is a reverse screw.   The internal thread portion for temporary fixing is formed in communication with the internal thread portion with a smaller diameter than the internal diameter of the internal thread portion, and the diameter-expanding means is screwed into the internal thread portion for temporary fixing and is formed on the annular temporary fixing member. A temporary fixing male screw portion inserted through a through hole formed in the center, and a circular pressing portion disposed at the lower end of the temporary fixing male screw portion and in contact with the lower surface of the annular temporary fixing member or the temporary fixing The anchor according to claim 1, further comprising: a pin inserted into a lower end of the male screw portion and fixed to a lower end portion of the annular temporary fixing member.   The anchor according to claim 5, wherein the temporary fixing female screw portion of the embedded portion and the temporary fixing male screw portion of the diameter expanding means are reverse screws.   The anchor according to any one of claims 1 to 6, wherein a ridge portion and an uneven portion are formed on an outer peripheral surface of the embedded portion.   The anchor according to any one of claims 1 to 7, further comprising a tapered portion formed on a bottom surface portion of the flange portion.   The inside of the anchor holding recessed part drilled in the upper surface of the said collar part, or the anchor holding convex part protrudingly provided in the upper surface of the said collar part is provided, The inside of Claim 1 thru | or 8 characterized by the above-mentioned. The anchor according to any one of claims.   The pilot hole drilling step of drilling a pilot hole in the base material, the adhesive filling step of filling the pilot hole with an adhesive, and the pilot hole according to any one of claims 1 to 9. An anchor embedding step for inserting the embedded portion of the anchor and a diameter of the annular temporary fixing member by expanding or pressing the diameter-expanding means so that the outer periphery of the annular temporary fixing member is a hole wall of the lower hole. A method for temporarily fixing an anchor, comprising: a step of temporarily fixing the anchor.   An anchor mounting jig mounting step for mounting an anchor mounting jig on the female thread portion, the anchor holding concave portion or the anchor holding convex portion of the anchor as a pre-process or a post-process of the anchor embedding step, The anchor fixing method according to claim 10, wherein the fixing step includes an anchor detent step for holding the anchor attachment jig to prevent rotation of the anchor.   The anchor according to any one of claims 1 to 9, wherein the anchor is embedded and temporarily fixed in the pilot hole drilled in the base material, and a fixing bolt screwed into the female thread portion of the anchor. A temporary fixing structure using an anchor, comprising: an object to be fixed tightly fixed to the base material via the anchor by the fixing bolt.   A non-rotating male screw portion screwed into the female screw portion of the anchor according to any one of claims 1 to 9, a non-rotating head formed on an upper portion of the non-rotating male screw portion, and the rotation An anchor mounting jig, comprising: a set male screw portion and a tool insertion hole formed through the anti-rotation head portion. The jig for anchor attachment according to claim 13, further comprising a gripping portion provided continuously with the detent head.

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