JP2006016952A - Anchor, method for temporarily fixing it, and temporary fixing structure using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anchor which is excellent in construction performance because it can be easily, surely and temporarily fixed to a base material for various types of structure such as a foundation, a wall, a column and a fence, formed of concrete, mortar, stone, wood, a metal plate, etc., by using a simple constitution, and which is excellent in durability and reliability, because it can be surely and firmly bound to an object to be fixed, without imposing a load on the base material and has a high drawing bearing strength. <P>SOLUTION: This anchor comprises: a female screw part 3a which is formed up to a predetermined depth from an upper end of an embedment part in parallel with the longitudinal direction of the axial center of the embedment part 2; a diameter-enlarged part 4 which has a fitting hole 4a drilled up to a predetermined height from a lower end of the embedment part in parallel with the axial center of the embedment part, and a plurality of split grooves 4c for splitting an outer peripheral wall of the fitting hole; a temporary fixing part member 5 which is almost cylindrically formed of a flexible metal or an elastic body and which is subjected to external insertion to the diameter-enlarged part; and a fitting member which has a diameter-enlarged insertion part 6b inserted from a lower end of the fitting hole and formed by being expanded downward, and a step wise locking part 6c formed at the lower end of the diameter-enlarged insertion part and locked by abutting on a lower end of an outer peripheral wall of the fitting hole. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is embedded in a base material of various structures such as a foundation, a wall, a pillar, a fence, etc. formed of concrete, mortar, block, stone, wood, metal plate, etc., for fixing an object to be fixed to the base material. The anchor, its temporary fixing method, and a temporary fixing structure using the anchor.

For anchors that are embedded in the base material of various structures such as foundations, walls, pillars, fences, etc., made of concrete, mortar, blocks, stone, wood, metal plates, etc. There are two types of mechanical anchors and chemical anchors.
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, “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 into the hole, and when the anchor main body is driven into an anchor construction hole of a base material such as concrete, the capsule is broken and the inner wall of the construction hole of the 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 point. "Temporary fixing means such as screws and anchors" characterized in that a protruding portion of an elastic body exerted 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 There is disclosed a resin combined anchor device in which an expansion member is wound and fitted and an outer peripheral surface of the expansion member is provided with a rotation stop protrusion.
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) In mechanical anchors such as (Patent Document 1), the open leg portion is expanded, and the open leg portion is directly pressed against the hole wall of the lower hole drilled in the base material. When it is fixed, the pulling strength is insufficient, and a high tensile pressure is applied, the anchor comes off together with the structure, and there is a problem of lack of reliability. In addition, when a person hits like a pin driving type to open and fix the open leg part, the degree of expansion changes depending on the strength of the person hitting, and the pullout strength tends to vary, and reliability Had the problem of lacking. In addition, since the open leg is fixed in direct contact with the hole wall of the lower hole, if the lower hole is drilled in the edge or thin part of the base material such as concrete or mortar and there are few marginal dimensions, Cracks and cracks are likely to occur due to the generated stress, and there is a problem that the strength is insufficient and 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, the work of the next process cannot be performed until the adhesive is cured, and it takes time until the adhesive is cured. Therefore, there is a problem that productivity and workability are lacking.
(3) Although the mechanical anchor of (Patent Document 3) is provided with a protruding portion of an elastic body that is compressed by insertion into the hole and exerts a restoring force on the hole wall as a temporary fixing means, the protruding portion protrudes from the beginning. Therefore, when inserting into the hole, the projecting part is scraped or torn off and it is not reliable, and the fixing method with the hole is the same as the conventional mechanical anchor, so the strength and dispersion of the extraction etc. Regarding the reliability and durability, the same problems as in (Patent Document 1) were encountered.
(4) Since the resin combined anchor device of (Patent Document 4) is fixed mechanically even before the resin is cured, a load can be applied to the bolt immediately after the construction, and the work of the next process can be performed. Although it can be performed continuously, it has a problem that the number of parts is large, the shape is complicated, and productivity and workability are 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 press against the inner peripheral surface of the construction hole. When the stop protrusion is scraped or chipped, the expansion member cannot be expanded, resulting in a lack of reliability.

  The present invention solves the above-mentioned conventional problems, and has a simple configuration for the base material of various structures such as foundations, walls, pillars, fences, etc. formed of concrete, mortar, blocks, stone, wood, metal plates, etc. Easy and reliable temporary fixing, excellent workability, strong fixation without imposing a burden on the base material, excellent reliability, reliable connection between the base material and the object to be fixed, and high pulling strength In addition, the provision of anchors with excellent durability, the anchors can be easily and securely temporarily fixed, the temporary fixing method capable of ensuring the workability and reliability in the subsequent process, and the base material and the object to be fixed using the same. An object is to provide a temporary fixing structure excellent in workability and productivity that can be fixed reliably in a short time.

In order to solve the above problems, the anchor of the present invention has the following configuration.
The anchor according to claim 1 of the present invention is formed in a base material of various structures such as a foundation, a wall, a pillar, and a fence in which an embedded portion is formed of concrete, mortar, block, stone, wood, metal plate, or the like. An anchor that is embedded in the prepared lower hole and is fixed by a synthetic resin or an adhesive filled between the outer periphery of the embedded portion and the hole wall of the lower hole, and binds the base material and the object to be fixed, a) An internal thread portion formed from the upper end of the embedded portion to a predetermined depth in parallel with the longitudinal direction of the shaft core of the embedded portion, or connected to the upper end of the embedded portion in parallel with the longitudinal direction of the shaft core of the embedded portion And (b) a fitting hole drilled from the lower end of the buried portion to a predetermined height in parallel with the longitudinal direction of the shaft core of the buried portion, and parallel to the longitudinal direction of the shaft core of the buried portion. A plurality of dividing grooves formed on the outer peripheral wall of the fitting hole and dividing the outer peripheral wall; (C) a temporary fixing member formed in a substantially cylindrical shape with a soft metal or elastic body and externally inserted into the enlarged diameter portion; and (d) inserted into the enlarged diameter portion from the lower end of the fitting hole and downward. The diameter-expanded insertion portion formed to expand to a diameter larger than the diameter of the fitting hole and the lower end of the enlarged-diameter insertion portion formed in contact with the lower end of the outer peripheral wall of the fitting hole And a fitting member having a stepped locking portion to be locked.
This configuration has the following effects.
(1) In the case where the internal thread portion is formed from the upper end of the embedded portion to a predetermined depth in parallel with the longitudinal direction of the shaft core of the embedded portion, a fixing bolt is attached to the internally threaded portion of the anchor that is embedded and temporarily fixed in the lower hole. Since it can be screwed, a fixing bolt can be inserted into a fixing hole or the like of an object to be fixed, and a fixing nut can be screwed and fixed to the base material.
(2) When having a male threaded portion that is connected to the upper end of the buried portion parallel to the longitudinal direction of the shaft core of the buried portion, insert a fixing hole or the like of the object to be fixed into the male threaded portion, and screw a fixing nut. Can be fixed to the base material.
(3) The diameter-enlarged portion has a fitting hole drilled from the lower end of the buried portion to a predetermined height parallel to the longitudinal direction of the shaft core of the buried portion, and a fitting hole parallel to the longitudinal direction of the shaft core of the buried portion A plurality of dividing grooves that are formed on the outer peripheral wall of the outer peripheral wall and split the outer peripheral wall; By having the anchor, the diameter-expanded portion can be easily expanded by simply pressing the upper end of the anchor against the lower hole and inserting the diameter-expanded insertion portion of the fitting member from the lower end of the fitting hole. Since the diameter of the temporary fixing member extrapolated to the diameter portion can be increased in the diameter direction, the outer periphery of the temporary fixing member can be pressed against the hole wall of the lower hole, and the temporary fixing member itself is deformed to the base material. The anchor can be temporarily fixed to the pilot hole without imposing a burden, and the anchor can be securely installed even in places where there are few marginal dimensions. Can.
(4) When the fitting member has a stepped locking portion formed at the lower end of the enlarged diameter insertion portion, the locking portion is inserted when the enlarged diameter insertion portion is inserted into the fitting hole of the enlarged diameter portion. Since it contacts and locks to the lower end of the outer peripheral wall of the fitting hole, the insertion amount of the fitting member can be regulated, and the diameter expansion amount of the expanded diameter portion can always be kept constant and temporarily fixed. The outer periphery of the member can be reliably brought into pressure contact with the hole wall of the pilot hole, and variations in the drawing strength can be reduced.
(5) Since the temporary fixing member is formed of a soft metal or an elastic body in a substantially cylindrical shape, the temporary fixing member can be surely expanded in the diameter direction according to the diameter expansion of the expanded diameter portion. Since the impact at the time of diameter expansion can be absorbed and the outer periphery of the temporary fixing member can be pressed against the hole wall of the lower hole without imposing a burden on the base material, the pressure contact surface expands and a large frictional resistance is obtained. The anchor can be reliably prevented from rotating, and the anchor fixing effect can be improved.
(6) By expanding the diameter of the substantially cylindrical temporary fixing member inserted on the outer periphery of the enlarged diameter portion, the outer periphery of the temporary fixing member can be pressed against and fixed to the hole wall of the lower hole. The hole wall of the lower hole can be pressed, and a certain pulling strength can be secured in the temporarily fixed state.
(7) Since the anchor can be temporarily fixed to the pilot hole of the base material by the temporary fixing member, the fixing bolt can be screwed to the female screw portion or the male screw portion even before the adhesive is completely solidified and the anchor is fixed. Even if the fixing nut is screwed onto the anchor, the anchor does not rotate together due to the frictional resistance to the enlarged diameter portion of the temporary fixing member and the lower hole, and the fixing bolt or fixing nut is securely attached to the female screw portion of the anchor. Or it can fix to a male screw part and can fix a base material and a to-be-fixed object.
(8) Since the anchor is temporarily fixed to the pilot hole of the base material by the temporary fixing member, and the outer periphery of the buried portion is fixed by the adhesive, the tensile strength of the anchor can be improved, and the variation in the pulling strength can be reduced. Can be reduced.
(9) When a step is formed on the outer periphery of the lower end portion of the buried portion and the outer peripheral wall of the enlarged diameter portion is formed thin, the enlarged diameter portion is deformed when the enlarged diameter insertion portion of the fitting member is inserted into the fitting hole. It is easy and can be easily expanded in diameter and has excellent workability.
(10) The diameter expansion amount of the expanded diameter part is easily adjusted by the difference in diameter between the outer diameter of the expanded diameter insertion part of the fitting member and the diameter of the fitting hole, the length of the split groove of the enlarged diameter part, or the like. It can be used and has excellent versatility.

Here, as the material of the embedded portion and the fitting member, in addition to metal products such as stainless steel, chrome steel, iron and steel, cast steel, cast iron, carbon steel, and aluminum alloys, carbon fiber, boron fiber, and glass fiber In addition, an organic or inorganic fiber such as a metal fiber and a synthetic resin-molded material are used. In the case of a metal, a rust-proofed one is preferably used. Thereby, it is possible to prevent the embedded portion from rusting and to improve the workability of assembly and disassembly.
As the temporary fixing member, an elastic body such as polyurethane resin or synthetic rubber or a soft metal such as lead is preferably used.
The outer diameter of the 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 temporary fixing member is excellent in workability and reliability without being caught or scraped by the hole wall of the lower hole.

When the female screw part is formed from the upper end side of the embedded part, the fitting hole is drilled from the lower end side of the embedded part to form a partition between them, and the female screw part and the fitting hole are not communicated with each other, The fixing bolt and the fitting member that are screwed onto the female screw portion do not come into contact with each other, and damage to the fitting member, the enlarged diameter portion, and the like can be reliably prevented. In addition, when the inner thread portion and the fitting hole are formed so as to communicate with each other without providing a partition wall, it is easy to process and the anchor can be reduced in weight. It is preferable to form a communication hole. Thereby, the lower end of the fixing bolt screwed to the female screw portion stops before the communication hole and does not interfere with the fitting member, and damage to the fitting member, the enlarged diameter portion, or the like can be prevented.
If the reduced diameter part that connects the communication hole and the fitting hole of the enlarged diameter part is formed, and the outer peripheral wall of the upper end part of the enlarged diameter part is formed thicker than the outer peripheral wall of the fitting hole, Excellent mechanical strength. In particular, by forming the top part of the dividing groove from the lower end to the upper end of the reduced diameter part and dividing at least a part of the lower end side of the reduced diameter part, the enlarged diameter part is easily deformed and damage to the enlarged diameter part is prevented. Reliability can be improved.

The enlarged diameter insertion portion of the fitting member is formed in a substantially conical shape, a substantially frustoconical shape, a substantially hemispherical shape, etc., and is expanded to a diameter larger than the diameter of the fitting hole toward the lower side. Can be inserted into the fitting hole of the enlarged diameter part from the small diameter side of the diameter insertion part, and when the bottom part of the fitting member is pressed, the enlarged diameter insertion part can be smoothly pushed into the fitting hole and easily It is possible to increase the diameter of the temporary fixing member disposed on the outer periphery of the lower end of the expanded diameter portion.
In addition, when the cylindrical insertion part whose outer diameter is substantially equal to the hole diameter of the fitting hole is formed at the upper end of the enlarged diameter insertion part, the fitting member can be held in the fitting hole in the initial state, and the fitting member When inserting into the fitting hole, the fitting member can be smoothly guided and the workability can be improved.

It is preferable to form the dividing grooves of the enlarged diameter portion at 3 to 6 locations on the outer peripheral wall of the fitting hole. As the number of dividing grooves becomes smaller than three, it becomes difficult to insert the enlarged diameter insertion portion of the fitting member into the fitting hole, and the diameter of the enlarged diameter portion becomes insufficient, and the strength of temporarily fixing the anchor Tends to be insufficient, and as the number increases from six, the strength of the outer peripheral wall of the fitting hole tends to decrease, and the enlarged diameter portion tends to break, both of which are not preferred.
The amount of diameter expansion of the expanded diameter portion can be changed by the difference in diameter between the outer diameter of the expanded diameter insertion portion of the fitting member and the diameter of the engagement hole or the length of the dividing groove of the expanded diameter portion. Even if the diameter of the fitting hole of the enlarged diameter part and the length of the dividing groove are the same, the diameter expansion amount can be easily changed by combining with a fitting member with a different outer diameter of the enlarged diameter insertion part. Excellent in properties.
Examples of the fixed object include a structure formed of concrete, brick, metal, and the like, a plate-like display object such as a signboard, and a manhole receiving frame. In particular, it can be suitably used for fixing a manhole receiving frame or the like that requires tensile strength.

The anchor according to claim 2 of the present invention is drilled in a base material of various structures such as a foundation, a wall, a pillar, and a fence in which an embedded portion is formed of concrete, mortar, block, stone, wood, metal plate, or the like. An anchor that is embedded in the prepared lower hole and is fixed by a synthetic resin or an adhesive filled between the outer periphery of the embedded portion and the hole wall of the lower hole, and binds the base material and the object to be fixed, a) an internal thread portion formed from the upper end of the embedded portion to a predetermined depth in parallel with the longitudinal direction of the axial center of the embedded portion; (b) a reduced diameter portion formed at a lower portion of the internal thread portion; ) A fitting hole that is smaller than the inner diameter of the female screw portion and communicates with the reduced diameter portion and is drilled to the lower end of the embedded portion; and a top portion of the embedded portion that is parallel to the longitudinal direction of the axial center of the embedded portion. A plurality formed from the lower end to the upper end and dividing at least a part of the outer peripheral wall and the reduced diameter portion of the fitting hole. (D) a temporary fixing member formed in a substantially cylindrical shape with a soft metal or elastic body and extrapolated to the enlarged diameter portion; and (e) the enlarged diameter portion. An enlarged diameter insertion portion that is inserted from the upper end of the fitting hole and expands upward to a diameter larger than the diameter of the fitting hole, and the fitting is formed at the upper end of the enlarged diameter insertion portion. And a fitting member having a stepped locking portion that is locked in contact with the outer periphery of the upper end of the hole.
With this configuration, in addition to the operation of the first aspect, the following operation is provided.
(1) The diameter-expanded portion is smaller than the inner diameter of the female screw portion, communicates with the reduced-diameter portion and is drilled to the lower end of the embedded portion, and the top portion has a reduced diameter parallel to the longitudinal direction of the shaft axis of the embedded portion. A plurality of dividing grooves that divide at least a part of the outer peripheral wall of the fitting hole and the reduced diameter portion, and are formed larger than the diameter of the fitting hole upward. By having the enlarged diameter insertion part formed to expand to the diameter, the upper end of the fitting member is pressed against the fitting hole with a rod-like member inserted from the female screw part, and fitted from the upper end of the fitting hole. By simply inserting the expanded diameter insertion portion of the joint member, the expanded diameter portion can be easily expanded, and the temporary fixing member externally inserted into the expanded diameter portion can be expanded in the diameter direction. The outer periphery of the fixing member can be pressed against the hole wall of the lower hole, and the temporary fixing member itself is deformed and the anchor is lowered without placing a burden on the base material. Temporarily fixing it can be, it can be reliably construction of the anchor also at the edges free size less place.
(2) When the fitting member has a stepped locking part formed at the upper end of the enlarged diameter insertion part, the locking part is inserted when the enlarged diameter insertion part is inserted into the fitting hole of the enlarged diameter part. Since the is abutted and locked to the upper end of the outer peripheral wall of the fitting hole, the insertion amount of the fitting member can be restricted, the diameter expansion amount of the expanded diameter portion can always be kept constant, and temporarily fixed The outer periphery of the member can be reliably brought into pressure contact with the hole wall of the pilot hole, and variations in the drawing strength can be reduced.
(3) Since the fitting member is inserted into the fitting hole of the enlarged diameter portion from the upper end, the drilling of the lower hole only needs to be the length of the embedded portion, and it is securely fitted with a rod-like member inserted from the female screw portion. The member can be pressed, the diameter-expanded portion can be stably expanded by a certain amount, and workability can be improved.
(4) By forming the reduced diameter part by making the outer peripheral wall of the upper end part of the enlarged diameter part thicker than the outer peripheral wall of the fitting hole, and forming the top part of the dividing groove from the lower end to the upper end of the reduced diameter part, When the fitting member is inserted into the fitting hole of the enlarged diameter portion, the enlarged diameter portion can be reliably deformed, and the mechanical strength at the time of diameter expansion is excellent.

Here, when a communication hole having a hole diameter equal to or smaller than the inner diameter of the female screw portion and a depth greater than the height of the engaging portion of the fitting member is formed between the lower end of the female screw portion and the upper end of the reduced diameter portion, the female screw portion The lower end of the fixing bolt that is screwed onto the fitting member does not come into contact with the fitting member, and the fitting member and the enlarged diameter portion can be reliably prevented from being damaged.
The embedded part is embedded in the lower hole, and a rod-shaped member or the like is inserted into the female thread part so that the lower end is in contact with the upper surface of the fitting member, and the upper end is hit with a hammer or the like to engage the engaging part of the fitting member. By pressing until it is locked to the upper end of the outer peripheral wall of the hole, a certain amount of diameter expansion can be easily secured.

Invention of Claim 3 is an anchor of Claim 1 or 2, Comprising: It has the structure provided with the collar part formed or arrange | positioned in the upper end outer periphery of the said embedment part.
With this configuration, in addition to the operation of the first or second aspect, the following operation is provided.
(1) Since the flange is formed or disposed on the outer periphery of the upper end of the embedded portion, the embedded portion can be held by locking the flange to the base material surface or the opening edge of the lower hole. The anchor is not buried in the inside, and only the buried portion can be reliably buried in the prepared hole, so that the anchor can be temporarily fixed.
(2) Since the flange is formed or disposed 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. And excellent workability.

Here, the outer diameter of the collar portion is larger than the hole diameter of the lower hole of the base material, and the bottom surface of the collar portion is surely locked to the upper surface of the base material when the embedded portion is inserted into the lower hole. To do. In addition, when a counterbore with a thickness equal to or greater than the thickness of the collar is formed on the outer periphery of the pilot hole, the collar does not protrude from the surface of the base material, and the object to be fixed can be supported on the entire surface of the base material. Excellent.
A cylindrical part is formed on the inner peripheral bottom side of the collar that is formed in an annular shape, and the inner diameter is almost equal to the outer shape of the buried part, and the outer diameter is almost equal to the hole diameter of the lower hole of the base material. If the cylindrical portion is inserted between the outer periphery of the embedded portion and the inner periphery of the lower hole of the base material, it is ensured that the flange portion is reliable regardless of the length of the embedded portion and the depth of the lower hole. Can be locked to the upper surface of the base material, and the center of the pilot hole and the center of the embedded portion can be substantially matched, so that the embedded portion can be easily held upright and improved in workability. Excellent. If the collar is detachable, it can be removed after temporary fixing and used repeatedly, resulting in excellent resource saving.
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 means of a diameter expanding means For example, it is possible to fix the buried portion and improve the workability.

Invention of Claim 4 is an anchor of any one of Claims 1 thru | or 3, Comprising: The structure provided with the some protrusion part or uneven | corrugated | grooved part formed in the outer peripheral surface of the said embedment part have.
With this configuration, in addition to the operation of any one of claims 1 to 3, the following operation is provided.
(1) Since protrusions and irregularities are formed on the outer peripheral surface of the embedded portion, the erosion 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 between the base hole and the embedded portion can be made stronger.
Here, the protrusions and irregularities formed on the outer peripheral surface of the embedded part are embedded with continuous protrusions or discontinuous protrusions formed randomly or at predetermined intervals, or spiral grooves. It is desirable to form a shape that functions as a buffer for the adhesive filled between the outer periphery of the part and the hole wall of the lower hole, widens the bonding area, and gives 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 5 is an anchor of Claim 1 or 3, Comprising: The structure provided with the embedded external thread part formed in the outer peripheral surface of the said embedded part by the same diameter as the outer diameter of the said external thread part. have.
With this configuration, in addition to the operation of the first or third aspect, the following operation is provided.
(1) By forming the embedded male screw part on the outer peripheral surface of the embedded part to the same diameter as the outer diameter of the male screw part connected to the upper end of the embedded part, the embedded male screw part and the male screw part are collectively formed by one processing. And processability can be improved.
(2) Since the embedded male screw part is formed on the outer peripheral surface of the embedded part, the adhesive filled between the outer periphery of the embedded part and the hole wall of the lower hole and the outer peripheral surface of the embedded part are well bitten. Thus, the fixing between the base hole and the buried portion can be further strengthened.
Here, as the embedded male screw portion and the male screw portion, an existing single bolt shaft can be used as it is. An anchor can be easily formed simply by forming an enlarged diameter portion at the lower end of the bolt shaft and disposing a temporary fixing member and a fitting member, and is excellent in mass productivity.

Invention of Claim 6 is an anchor of Claim 3 or 5, Comprising: The said collar part has the structure screwed together by the said external thread part or the said embedded external thread part so that height adjustment was possible. Yes.
With this configuration, in addition to the operation of the third or fifth aspect, the following operation is provided.
(1) The height of the collar can be freely adjusted according to the depth of the pilot hole drilled in the base material by screwing the collar to the male thread or the embedded male thread. In particular, when the construction is performed on a horizontal surface such as a floor surface, the buried portion can be held by locking the collar portion to the surface of the base material, which is excellent in versatility.
(2) Since the eaves part can be arranged to move up and down with respect to the external thread part or the embedded external thread part, a plurality of eaves parts can be screwed together, and any gap between the base material and the fixed object The height of the buttock can be adjusted freely to level the object to be fixed, or after the height adjustment, mortar is filled between the base material and the object to be fixed. It can fix the object to be fixed and has excellent workability.
(3) When a plurality of flanges are arranged in the male screw portion or the buried male screw portion, a gap can be easily formed between the base material and the fixed object, so that a heat insulating material, an advertisement, etc. can be formed in the gap. A member can be interposed, and it is excellent in functionality and practicality.

  Here, the flange portion is formed in an annular shape, and a female screw portion for screwing that is screwed into the male screw portion or the buried male screw portion is formed on the inner periphery. You may form the taper part expanded toward the outer periphery upwards in the bottom face part of a collar part. As a result, when the embedded part is inserted into the lower hole of the base material, the taper part is engaged with the opening edge of the lower hole and automatically aligned so that the center of the lower hole coincides with the center of the embedded part. Therefore, it is excellent in workability. In addition, since the center of the pilot hole and the center of the embedded portion coincide with each other, when the diameter of the temporary fixing member is increased, the outer periphery of the temporary fixing member can be uniformly pressed against the hole wall of the base material. Thus, the embedded portion can be temporarily fixed to the pilot hole of the base material more reliably and stably, and the workability and reliability can be improved. Since the collar part is used by being screwed into the male thread part or the buried male thread part, a plurality of collar parts can be adjusted and arranged at an arbitrary height, and the position (height of the object to be fixed) can be arranged at the collar part. ), A desired gap can be formed between the base material and the object to be fixed, and the workability and functionality are excellent.

A seventh aspect of the present invention is the anchor according to any one of the third to sixth aspects, wherein the anchor holding recess formed in the upper surface of the flange or the upper surface of the flange 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 3 to 6, 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. Since the embedded portion can be held by an anchor holding jig having a recess or the like that fits or engages with the anchor holding convex portion, the enlarged diameter insertion portion of the fitting member is inserted from the lower end of the fitting hole. When the diameter of the temporary fixing member is increased, the embedded portion can be pressed downward using the anchor holding jig, and the workability is excellent.
(2) By having an anchor holding recess or anchor holding projection on the upper surface of the flange, the anchor holding recess can be used when a male screw such as a fixing bolt or a female screw such as a fixing nut is screwed onto the female screw portion or the male screw portion. The anchor holding convex portion can be held to prevent the embedded portion from rotating together, and the male screw or the female screw can be securely and firmly fixed to the female screw portion or the male screw portion.

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 holding jig is formed with an opening so that a male screw such as a male screw connected to the upper end of the embedded portion or a male screw such as a fixing bolt screwed into the female screw portion of the embedded portion can be inserted. When the collar portion has an anchor holding concave portion, a convex portion that fits into the anchor holding concave portion is formed on the back surface of the anchor holding 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 holding jig to fit the anchor holding convex portion, and the collar portion is 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 holding 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 holding jig is formed in a U shape or the like so as to open on the side, the anchor holding jig can be easily removed from the side and the workability is excellent.

When the embedded part is held by the anchor holding jig, a protection formed of a synthetic resin or the like larger than the outer diameter of the anchor collar between the lower surface of the anchor holding jig and the upper surface of the anchor collar. It is preferable to dispose a sheet. Thereby, it can prevent that the adhesive agent which filled the pilot hole of the base material and overflowed adheres to the jig | tool for anchor holding, and is excellent in workability and maintainability. As the shape of the protective sheet, a circular shape or a rectangular shape is preferable because it is excellent in productivity, but any shape may be used as long as it is larger than the outer diameter of the collar portion and can prevent adhesion of the adhesive. An insertion hole larger than at least the inner diameter of the female screw portion of the embedded portion or the outer diameter of the male screw portion is formed at a substantially central portion of the protective sheet, and a position corresponding to the anchor holding concave portion or the anchor holding convex portion is also opened. Accordingly, the anchor holding jig can be attached to the anchor holding concave portion or the anchor holding convex portion through the protective sheet, and the fitting member is pressed by inserting the rod-like member or the like from the insertion hole, or the female screw portion. A male screw such as a fixing bolt can be screwed onto the screw.
The protective sheet may be removed after the anchor is temporarily fixed and the anchor holding jig is removed. However, a male screw such as a fixing bolt is inserted into the protective sheet from the insertion hole of the protective sheet. Since it can be screwed on, it may be left as it is.

In the anchor fixing step, the protective sheet is disposed between the lower surface of the anchor mounting jig and the upper surface of the anchor flange in the anchor temporary fixing step. It is also possible to arrange them between. 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.

According to an eighth aspect of the present invention, there is provided a method for temporarily fixing an anchor, the pilot hole drilling step of drilling a pilot hole in the base material, the adhesive filling step of filling the pilot hole with the adhesive, An anchor embedding step of inserting the embedded portion of the anchor according to any one of claims 1 to 7 into the hole, and expanding the diameter-expanded portion in the diameter direction by pressing the fitting member, A temporary fixing step of pressing the outer periphery of the temporary fixing member against the hole wall of the lower hole.
This configuration has the following effects.
(1) Since there is a pilot hole drilling step of drilling a pilot hole in the base material, the pilot hole can be drilled in accordance with the lengths of the anchor embedding portion and the locking portion of the fitting member. Can be prevented from protruding from the surface of the base material, 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) The anchor embedded portion is inserted and embedded in the lower hole in the anchor embedding step, and the fitting member is pressed in the temporary fixing step to increase the diameter in the diameter direction (the hole wall side of the lower hole). Since the outer periphery of the temporary fixing member can be pressed against the hole wall of the lower hole, the embedded portion of the anchor can be temporarily fixed to the lower hole of the base material and filled in the adhesive filling step. Even before the adhesive is solidified, fixing bolts can be screwed onto the internal threaded part of the buried part, and fixing nuts can be screwed onto the male threaded part, allowing the base material and the object to be fixed to be fixed in a short time. It can be carried out.
(5) By pressing the fitting member in the temporary fixing step, the diameter-expanded portion can be expanded in the diameter direction, and the outer periphery of the temporary fixing member can be pressed against the hole wall of the lower hole. The anchor can be temporarily fixed to the pilot hole without being hooked, 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. By disposing a stopper on the outer periphery of a tool such as a hammer drill in accordance with the length of the embedded portion or the like, a pilot hole of a predetermined depth can be drilled uniformly and easily.
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 makes it easy to insert the embedded portion of the anchor into the pilot hole and reliably embed the embedded portion to a predetermined depth. Can be covered without spots, the anchor pull-out strength can be ensured, and the reliability can be improved. When the pilot hole drilling process is performed in a factory or the like in advance, the precision of the pilot hole is excellent, the work man-hours on site can be reduced, and the productivity can be improved.

In addition, the pilot hole drilling process may be provided with a pilot hole roughening process that roughens the surface by, for example, scraping the hole wall (inner peripheral surface) of the pilot hole with a wire brush or the like. By roughening the hole wall of the lower hole to form irregularities, the adhesive filled in the lower hole and the surface of the hole wall of the lower hole are better bitten, and the anchor pull-out strength 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. Instead of filling the liquid adhesive, an encapsulated adhesive may be used.

In the anchor embedding process, the anchor embedding portion is inserted into the pilot hole of the base material and embedded. When a flat collar is formed or disposed on the outer periphery of the anchor's buried part, the buried part is inserted until the lower surface of the collar comes into contact with the surface of the base material. It can be locked to the opening edge, and the anchor can be supported on the surface of the base material. In particular, when the taper 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 taper portion is in contact with the opening 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 on the surface of the base material, the object to be fixed can be reliably supported on the entire surface of the base material, and the fixing stability is excellent.

  In the temporary fixing step, the diameter-enlarged portion is expanded in the diameter direction by the fitting member, and the outer periphery of the temporary fixing member is pressed against the hole wall of the lower hole. When the fitting member is inserted from the lower end of the fitting hole of the enlarged diameter portion, the anchor is inserted by inserting the buried portion of the anchor into the lower hole of the base material drilled to a predetermined depth and pressing it downward. The lower surface of the combined member rises by being pressed against the bottom surface of the lower hole, and the diameter-expanded portion can be expanded outwardly to expand the diameter in the diameter direction. When the fitting member is inserted from the upper end of the fitting hole of the enlarged diameter portion, the fitting member can be pressed downward by a rod-like member or the like inserted from the upper female screw portion side. Regardless of this, the fitting member can be surely lowered, and the expanded diameter portion can be expanded outwardly and expanded in the diameter direction, thereby being excellent in reliability and workability.

The invention according to claim 9 is the anchor temporary fixing method according to claim 8, wherein the anchor part of the anchor according to claim 6 is moved up and down as a pre-process or a post-process of the anchor embedding process. It has the structure provided with the embedding depth adjustment process which moves and adjusts the embedding depth of the said embedding part.
With this configuration, in addition to the operation of the eighth aspect, the following operation is provided.
(1) As a pre-process or a post-process of the anchor embedding process, the base material is drilled by having an embedding depth adjusting process of adjusting the embedding depth of the embedding part by moving the anchor collar up and down. The height of the collar can be adjusted freely according to the depth of the pilot hole, the anchor can be locked to the upper surface of the base material, and the buried part can be held, making it easy to temporarily fix the anchor. It can be performed.
(2) By having the embedment depth adjustment step, the lower surface of the fitting member inserted from the lower end of the fitting hole can be brought into contact with the bottom surface of the lower hole and pressed, and the processing accuracy of the lower hole Regardless of this, since the diameter-expanded portion can be expanded, the outer periphery of the temporary fixing member can be brought into pressure contact with the hole wall of the lower hole, and the anchor can be temporarily fixed.

The invention according to claim 10 of the present invention is a temporary fixing structure using an anchor, and is any one of claims 1 to 7 embedded and temporarily fixed in the lower hole drilled in the base material. The anchor according to claim 1, a fixing bolt screwed to the female screw portion of the anchor or a fixing nut screwed to the male screw portion, and the fixing bolt or the fixing nut via the anchor. And the fixed object tightly fixed to the base material.
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 anchor is fixed by a fixing bolt screwed to the female screw portion of the anchor or a fixing nut screwed to the male screw portion. Thus, the object to be fixed can be tightly fixed to the base material.
(2) Since the object to be fixed is fixed to the base material via the anchor by the fixing bolt screwed to the female screw part of the anchor or the fixing nut screwed to the male screw part, the prepared hole is filled. Even if the adhesive is not completely cured, the object to be fixed does not move, the work can be advanced, and the construction period can be shortened.
(3) 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 or the fixing nut screwed to the male threaded portion. The adhesive is cured as time passes, and the anchor is changed from the temporarily fixed state to the fixed state, so that the fixed object and the base material can be firmly fixed.

As described above, according to the anchor of the present invention, the temporary fixing method thereof, and the temporary fixing structure using the anchor, the following advantageous effects can be obtained.
According to invention of Claim 1, it has the following effects.
(1) The expanded diameter portion has a fitting hole drilled from the lower end of the buried portion to a predetermined height parallel to the longitudinal direction of the shaft core of the buried portion, and a fitting hole parallel to the longitudinal direction of the shaft core of the buried portion. A plurality of dividing grooves that are formed on the outer peripheral wall of the outer peripheral wall and split the outer peripheral wall; By having the anchor, the diameter-expanded portion can be easily expanded by simply pressing the upper end of the anchor against the lower hole and inserting the diameter-expanded insertion portion of the fitting member from the lower end of the fitting hole. Since the diameter of the temporary fixing member extrapolated to the diameter portion can be increased in the diameter direction, the outer periphery of the temporary fixing member can be pressed against the hole wall of the lower hole, and the temporary fixing member itself is deformed to the base material. The anchor can be temporarily fixed to the pilot hole without imposing a burden, and the anchor can be securely installed even in places where there are few marginal dimensions. It is possible to provide an anchor reliability, excellent in workability that can.
(2) When the fitting member has a stepped locking portion formed at the lower end of the enlarged diameter insertion portion, the locking portion is inserted when the enlarged diameter insertion portion is inserted into the fitting hole of the enlarged diameter portion. Since it contacts and locks to the lower end of the outer peripheral wall of the fitting hole, the insertion amount of the fitting member can be regulated, and the diameter expansion amount of the expanded diameter portion can always be kept constant and temporarily fixed. The outer periphery of the member can be reliably brought into pressure contact with the hole wall of the pilot hole, and an anchor with excellent reliability that can reduce the variation in the pulling strength can be provided.
(3) Since the temporary fixing member is formed of a soft metal or an elastic body in a substantially cylindrical shape, the temporary fixing member can be reliably expanded in the diameter direction in accordance with the diameter expansion of the expanded diameter portion. Since the impact at the time of diameter expansion can be absorbed and the outer periphery of the temporary fixing member can be pressed against the hole wall of the lower hole without imposing a burden on the base material, the pressure contact surface expands and a large frictional resistance is obtained. It is possible to provide an anchor excellent in workability and reliability that can reliably prevent the rotation of the anchor and improve the temporary fixing effect of the anchor.
(4) By expanding the diameter of the annular temporary fixing member inserted in the outer periphery of the enlarged diameter portion, the outer periphery of the temporary fixing member can be pressed and fixed to the hole wall of the lower hole. It is possible to provide a highly reliable anchor capable of pressing the hole wall and securing 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 temporary fixing member, the fixing bolt can be screwed to the female screw portion or the male screw portion even before the adhesive is completely solidified and the anchor is fixed. Even if the fixing nut is screwed to the anchor, the anchor does not rotate together due to the frictional resistance to the enlarged diameter portion of the temporary fixing member and the lower hole, and the fixing bolt or fixing nut is securely attached to the female screw portion of the anchor. Alternatively, it is possible to provide an anchor excellent in workability that can be fixed to the male screw portion and can shorten the work period and fix the base material and the fixed object.
(6) Since the anchor is temporarily fixed to the pilot hole of the base material by the temporary fixing member, and the outer periphery of the embedded portion is fixed by the adhesive, the tensile strength of the anchor can be improved and the variation in the pulling strength can be reduced. An anchor with excellent reliability that can be reduced can be provided.
(7) The diameter expansion amount of the expanded diameter part is easily adjusted by the difference in diameter between the outer diameter of the expanded diameter insertion part of the fitting member and the diameter of the fitting hole, the length of the split groove of the enlarged diameter part, and the like. An anchor having excellent versatility that can be provided can be provided.

According to invention of Claim 2, in addition to the effect of Claim 1, it has the following effects.
(1) The diameter-expanded portion is smaller than the inner diameter of the female screw portion, communicates with the reduced-diameter portion, drilled to the lower end of the embedded portion, and the top portion has a reduced diameter parallel to the longitudinal direction of the shaft axis of the embedded portion. A plurality of dividing grooves that divide at least a part of the outer peripheral wall of the fitting hole and the reduced diameter portion, and are formed larger than the diameter of the fitting hole upward. By having an enlarged diameter insertion part formed to expand to the diameter, the upper end of the fitting member is pressed against the fitting hole with a rod-like member inserted from the female screw part and fitted from the upper end of the fitting hole. By simply inserting the expanded diameter insertion portion of the combined member, the expanded diameter portion can be easily expanded, and the temporary fixing member extrapolated to the outer periphery of the expanded diameter portion can be expanded in the diameter direction. The outer periphery of the temporary fixing member can be brought into pressure contact with the hole wall of the lower hole, and the temporary fixing member itself is deformed so that the anchor is not burdened. The can be temporarily fixed to the prepared hole, reliability can be reliably construction of the anchor also at the edges free size is small place, it is possible to provide an excellent anchor workability.
(2) When the fitting member has a stepped locking part formed at the upper end of the enlarged diameter insertion part, the locking part is inserted when the enlarged diameter insertion part is inserted into the fitting hole of the enlarged diameter part. Since the is abutted and locked to the upper end of the outer peripheral wall of the fitting hole, the insertion amount of the fitting member can be restricted, the diameter expansion amount of the expanded diameter portion can always be kept constant, and temporarily fixed The outer periphery of the member can be reliably brought into pressure contact with the hole wall of the pilot hole, and an anchor with excellent reliability that can reduce the variation in the pulling strength can be provided.
(3) Since the fitting member is inserted into the fitting hole of the enlarged diameter portion from the upper end, the fitting member is surely pressed with a rod-like member or the like inserted from the female screw portion regardless of the depth of the lower hole. Thus, it is possible to provide an anchor excellent in workability and reliability capable of stably expanding the diameter-expanded portion by a certain amount.
(4) The outer peripheral wall of the upper end portion of the enlarged diameter portion is made thicker than the outer peripheral wall of the fitting hole to form the reduced diameter portion, and the top of the dividing groove is formed from the lower end to the upper end of the reduced diameter portion. By dividing at least a part of the lower end side of the diameter part, when the fitting member is inserted into the fitting hole of the enlarged diameter part, the enlarged diameter part can be reliably deformed and the workability is excellent, and the enlarged diameter is obtained. The mechanical strength at the time can be ensured, and an anchor excellent in reliability and durability can be provided.

According to invention of Claim 3, in addition to the effect of Claim 1 or 2, it has the following effects.
(1) Since the flange is formed or disposed on the outer periphery of the upper end of the embedded portion, the embedded portion can be held by locking the flange to the upper surface of the base material or the opening edge of the lower hole. To provide an anchor excellent in workability and reliability, in which the anchor is not buried in the hole, only the buried portion can be reliably buried in the lower hole, and the anchor can be temporarily fixed. Can do.
(2) Since the flange is formed or disposed 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 workability.

According to invention of Claim 4, in addition to the effect of any one of Claims 1 thru | or 3, 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 5, in addition to the effect of Claim 1 or 3, it has the following effects.
(1) By forming the embedded male screw portion on the outer peripheral surface of the embedded portion to the same diameter as the outer diameter of the male screw portion protruding from the upper end of the embedded portion, the embedded male screw portion and the male screw portion are formed together in a single process. An anchor excellent in processability and productivity can be provided.
(2) Since the embedded male screw part is formed on the outer peripheral surface of the embedded part, the adhesive filled between the outer periphery of the embedded part and the hole wall of the lower hole and the outer peripheral surface of the embedded part are well bitten. As a result, it is possible to provide a highly reliable anchor capable of further strengthening the fixation between the prepared hole of the base material and the embedded portion and improving the bonding strength.

According to invention of Claim 6, in addition to the effect of Claim 3 or 5, it has the following effects.
(1) The height of the collar can be freely adjusted according to the depth of the pilot hole drilled in the base material by screwing the collar to the male thread or the embedded male thread. In particular, when constructing on a horizontal surface such as a floor surface, we provide anchors with excellent workability and reliability that can hold the buried part by locking the collar part to the upper surface of the base material or the opening edge of the lower hole can do.
(2) Since the collar portion can be arranged to move up and down with respect to the male screw portion and the embedded male screw portion, a plurality of collar portions can be screwed together, and an arbitrary gap is provided between the base material and the fixed object. The height of the buttocks can be freely adjusted to level the object to be fixed, or after the height adjustment, mortar is filled between the base material and the object to be fixed. An anchor excellent in workability capable of fixing an object to be fixed can be provided.
(3) By arranging a plurality of flanges on the male screw part or the buried male screw part, a gap can be easily formed between the base material and the fixed object, and a heat insulating material, an advertisement, etc. can be formed in the gap. An anchor excellent in functionality and practicality capable of interposing a member can be provided.

According to invention of Claim 7, in addition to the effect of any one of Claims 3 thru | or 6, 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 on the upper surface of the buttock with the convex portion or concave portion of the anchor holding jig, The embedded portion can be easily held, and when the diameter-expanded insertion portion of the fitting member is inserted from the lower end of the fitting hole to increase the diameter of the temporary fixing member, the embedded portion is lifted from the lower hole of the base material. Thus, it is possible to provide an anchor having excellent workability and reliability that can securely prevent the temporary fixing member from being expanded and can be firmly fixed temporarily to 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 8, 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) The anchor burying step inserts and embeds the anchor buried portion in the pilot hole, and the temporary fixing step presses the fitting member or the pressing member to expand the diameter-expanded portion in the diameter direction. Since the outer periphery of the temporary fixing member can be pressed against the hole wall of the lower hole, the embedded portion of the anchor can be temporarily fixed to the lower hole of the base material, and the adhesive filled in the adhesive filling process solidifies. The fixing bolt can be screwed to the female threaded part of the buried part before, or the fixing nut can be screwed to the male threaded part, and the base material and the object to be fixed can be fixed in a short period of time. It is possible to provide an anchor temporary fixing method excellent in workability capable of shortening the work period.
(4) By pressing the fitting member in the temporary fixing step, the diameter-expanded portion can be expanded in the diameter direction and the outer periphery of the temporary fixing member can be pressed against the hole wall of the lower hole. An anchor with excellent workability and reliability that can be fixed temporarily in the pilot hole without being hung, can prevent cracking even in places where there are few marginal dimensions, and can be installed reliably. A temporary fixing method can be provided.

According to invention of Claim 9, in addition to the effect of Claim 8, it has the following effects.
(1) As a pre-process or a post-process of the anchor embedding process, the base material is drilled by having an embedding depth adjusting process of adjusting the embedding depth of the embedding part by moving the anchor collar up and down. Construction that can adjust the height of the collar part according to the depth of the pilot hole, and can hold the buried part by locking the collar part to the upper surface of the base material or the opening edge of the pilot hole. It is possible to provide a method for temporarily fixing an anchor excellent in reliability and reliability.
(2) By having the embedment depth adjustment step, the lower surface of the fitting member inserted from the lower end of the fitting hole can be brought into contact with the bottom surface of the lower hole and pressed, and the processing accuracy of the lower hole Regardless of the diameter, the diameter-expanded portion can be expanded, so that the outer periphery of the temporary fixing member can be pressed against the hole wall of the lower hole, and the anchor can be temporarily fixed. A method for temporarily fixing an anchor can be provided.

According to invention of Claim 10, it has the following effects.
(1) Since the anchor is embedded and temporarily fixed in a pilot hole drilled in the base material, the anchor is fixed by a fixing bolt screwed to the female screw portion of the anchor or a fixing nut screwed to the male screw portion. Thus, it is possible to provide a temporary fixing structure using an anchor having excellent reliability capable of tightly fixing an object to be fixed to a base material.
(2) Since the object to be fixed is fixed to the base material via the anchor by the fixing bolt screwed to the female screw part of the anchor or the fixing nut screwed to the male screw part, the prepared hole is filled. Even if the adhesive is not completely cured, the object to be fixed will not move, work can be carried out, and the work period can be shortened. can do.
(3) 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 or the fixing nut screwed to the male threaded portion. A temporary fixing structure using an anchor with excellent workability and reliability that can firmly fix the object to be fixed and the base material by changing the anchor from the temporarily fixed state to the fixed state over time. Can be provided.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment 1)
FIG. 1A is an exploded cross-sectional side view of a main part showing an anchor in the first embodiment, and FIG. 1B is a cross-sectional side view of an essential part showing the anchor in the first embodiment.
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 the anchor 1 molded with organic or inorganic fibers such as fibers and metal fibers and a synthetic resin, 2a is a flange portion of the anchor 1 formed on the outer periphery of the upper end of the embedded portion 2, and 2b is a bottom surface portion of the flange portion 2a. 2c is a spiral groove formed on the outer peripheral surface of the embedded portion 2, and 3a is an anchor formed from the upper end of the embedded portion 2 to a predetermined depth in parallel with the longitudinal direction of the axis of the embedded portion 2. 1, a female threaded portion 3b communicates with the lower portion of the female threaded portion 3a, and is formed with a smaller diameter bore than the female threaded portion 3a. 3c has a reduced diameter portion formed in communication with the lower portion of the communicating hole 3b. Is the anchor 1 formed at the lower end of the buried portion 2 The diameter portion, 4a is coaxially drilled from the lower end of the embedded portion 2 to a predetermined height, and the fitting hole of the enlarged diameter portion 4 connected to the reduced diameter portion 3c, 4b is the outer peripheral wall of the fitting hole 4a, 4c is A plurality of diameter-enlarged portions 4 that are formed in three to six locations on the outer peripheral wall 4b of the reduced diameter portion 3c and the fitting hole 4a in parallel with the longitudinal direction of the shaft core of the embedded portion 2 and divide the reduced diameter portion 3c and the outer peripheral wall 4b. The dividing grooves, 4d are steps of the enlarged diameter portion 4 formed at the upper end of the outer peripheral wall 4b, and 5 is an enlarged diameter portion formed of a soft metal such as lead or an elastic body such as polyurethane resin or synthetic rubber in a substantially cylindrical shape. 4 is a temporary fixing member that is extrapolated to the outer periphery of the lower end of 4, 6 is a fitting member of the anchor 1 inserted from the lower end into the fitting hole 4 a of the enlarged diameter portion 4, and 6 a is a hole diameter of the fitting hole 4 a of the enlarged diameter portion 4. The fitting member 6 is inserted into the fitting hole 4a and held in the initial state in the initial state, and the fitting member 6 has a cylindrical insertion portion 6b from the lower end of the cylindrical insertion portion 6a. The expanded diameter insertion portion 6c of the fitting member 6 formed to expand in a conical shape toward the direction is formed at the lower end of the expanded diameter insertion portion 6b and is in contact with the lower end of the outer peripheral wall 4b of the engagement hole 4a. It is a step-shaped locking part of the fitting member 6 to be locked.

The buried portion 2 of the anchor 1 is reduced in weight by forming a communication hole 3b communicating with the lower end of the female screw portion 3a. Further, by forming the communication hole 3b with a hole diameter equal to or smaller than the inner diameter of the female screw portion 3a, the lower end of the male screw such as a fixing bolt screwed to the female screw portion 3a is prevented from interfering with the fitting member 6. Thus, the enlarged diameter portion 4 and the fitting member 6 are prevented from being damaged, and the fitting member 6 is prevented from falling out of the fitting hole 4a.
By forming the reduced diameter portion 3c in communication with the lower end of the communication hole 3b, the outer peripheral wall of the upper end portion (reduced diameter portion 3c) of the enlarged diameter portion 4 is formed thicker than the outer peripheral wall 4b of the fitting hole 4a. It is excellent in mechanical strength during diameter expansion. Further, the enlarged diameter portion 4 is formed at the lower end portion of the embedded portion 2 so as to be thinned through the step 4d, and the top portion of the dividing groove 4c is the center of the reduced diameter portion 3c or the base portion (upper end of the reduced diameter portion 3c). ), It is easy to expand the diameter when the expanded diameter insertion portion 6b is inserted, and the expanded diameter portion 4 is prevented from being damaged.

  The dividing grooves 4c of the enlarged diameter portion 4 were formed at 3-6 locations at equal intervals. As the number of the dividing grooves 4c becomes smaller than three, it becomes difficult to insert the enlarged diameter insertion portion 6b of the fitting member 6 into the fitting hole 4a, and the diameter of the enlarged diameter portion 4 is insufficient and the anchor is insufficient. There is a tendency that the strength of the temporary fixing of 1 is insufficient, and as the number increases more than six, the strength of the outer peripheral wall 4b of the fitting hole 4a decreases, and the enlarged diameter portion 4 tends to be easily damaged. This is because I understand. In addition, by forming the dividing grooves 4c at equal intervals, the diameter-enlarged portion 4 can be easily enlarged, the temporarily fixing member 5 can be uniformly deformed, and a certain pulling strength in the temporarily fixed state can be secured. .

By forming a cylindrical insertion portion 6a having an outer diameter substantially equal to the diameter of the fitting hole 4a at the upper end of the enlarged diameter insertion portion 6b of the fitting member 6, the fitting member 6 is held in the fitting hole 4a in the initial state. can do.
Moreover, the fitting member 6 is formed into a fitting hole by forming the enlarged-diameter insertion portion 6b of the fitting member 6 in a substantially truncated conical shape that expands downward from the diameter of the fitting hole 4a. When the diameter-expanded portion 4 is expanded by being pushed into 4a, the fitting member 6 can be smoothly guided and the workability can be improved.

The female screw portion 3 a is formed from the upper end side of the embedded portion 2, the fitting hole 4 is formed from the lower end side of the embedded portion 2 to form a partition, and the female screw portion 3 a and the fitting hole 4 communicate with each other. The hole 3b may not be formed. Thereby, the number of processing steps can be reduced, and the fitting member 6 and the male screw such as a fixing bolt screwed to the female screw portion 3a do not come into contact with each other, and the fitting member 6 and the enlarged diameter portion 4 can be reliably prevented from being damaged. can do.
Depending on the difference in diameter between the outer diameter of the enlarged diameter insertion portion 6b of the fitting member 6 and the diameter of the fitting hole 4a and the length of the dividing groove 4c of the enlarged diameter portion 4, the diameter expansion amount of the enlarged diameter portion 4 is changed. be able to. Moreover, even if the hole diameter of the fitting hole 4a of the enlarged diameter part 4 and the length of the dividing groove 4c are the same, the diameter expansion amount can be easily changed by combining with the fitting member 6 having a different outer diameter of the enlarged diameter insertion part 6b. It can be used and has excellent versatility.

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 of various structures such as a foundation, a wall, a pillar, and a fence formed of concrete, mortar, block, stone, wood, metal plate, 10a is a base material surface, and 11 is a base material surface. The lower hole 11a is drilled perpendicularly to 10a and is anchored and temporarily fixed by the anchor 1, 11a is the hole wall of the lower hole 11, 11b is the lower hole 11 in which the tapered portion 2b of the collar 2a of the anchor 1 is locked. An opening edge portion, 12 is filled in the lower hole 11, and an organic or inorganic adhesive filling the space between the spiral groove 2c on the outer peripheral surface of the embedded portion 2 and the hole wall 11a of the lower hole 11, and 13 is a female screw of the anchor 1 A fixing bolt screwed into the portion 3a, 14 is an object to be fixed installed on the surface 10a of the base material 10 with the fixing bolt 13 inserted into the fixing hole 14a, and 14b is on the back surface of the object 14 to be fixed. The formed counterbore, 15 is a washer inserted into the fixing bolt 13, and 16 is a fixed The base material 10 is screwed to use the bolt 13 is a fixing nut that fixes the object to be fixed 14.

By setting the outer diameter of the flange portion 2 a to be larger than the hole diameter of the lower hole 11 of the base material 10, when the embedded portion 2 is inserted into the lower hole 11, the opening edge of the lower hole 11 on the base material surface 10 a The taper part 2b of the collar part 2a is fastened to 11b, and the upper surface of the collar part 2a and the base material surface 10a are flush with each other. Thereby, there is no unevenness | corrugation in the base material surface 10a, the to-be-fixed object 14 can be reliably supported in the whole surface of the base material surface 10a, and it is excellent in fixing stability. In addition, when the counterbore 14b is formed on the back surface of the fixed object 14, the anchor 1 and the base material surface 10a do not interfere with each other even if the flange portion 2a of the anchor 1 protrudes from the base material surface 10a. Excellent.
By setting the outer diameter of the temporary fixing member 5 before deformation to be smaller than the diameter of the lower hole 11 of the base material 10, the temporary fixing member 5 is prepared as a lower hole when the embedded portion 2 of the anchor 1 is inserted into the lower hole 11. 11 is prevented from being caught or scraped by the hole wall 11a.
The stepped locking portion 6c formed at the lower end of the diameter-enlarged insertion portion 6b of the fitting member 6 is brought into contact with the lower end of the outer peripheral wall 4b of the fitting hole 4a after the diameter expansion, thereby engaging. The insertion amount of the member 6 can be restricted, the diameter expansion amount of the diameter expansion portion 4 can always be kept constant, and the outer periphery of the temporary fixing member 5 can be securely brought into pressure contact with the hole wall 11a of the lower hole 11 it can.

A method of temporarily fixing the anchor of the first embodiment configured as described above will be described 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 the main part showing an anchor embedding step and a temporary fixing step of the 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. By disposing a stopper on the outer periphery of a tool such as a hammer drill in accordance with the length of the embedded portion 2 of the anchor 1, the pilot hole 11 having a predetermined depth can be formed uniformly and easily. .
The hole diameter of the lower hole 11 is larger than the outer diameter of the embedded portion 2 and the temporary fixing member 5 of the anchor 1 and smaller than the flange portion 2 a of the embedded portion 2. Thereby, in the anchor embedment process in the subsequent step, when the burying portion 2 of the anchor 1 is inserted into the lower hole 11, the burying portion 2 and the temporary fixing member 5 are caught or scraped by the hole wall 11 a of the lower hole 11. In addition, when the embedded portion 2 is embedded in the lower hole 11, the taper portion 2b of the flange portion 2a can be positioned in contact with the opening edge portion 11b of the lower hole 11 in the vicinity of the base material surface 10a. 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 and moisture accumulated in the pilot hole 11 are removed by a brush, a blower, or the like. As a result, the embedded portion 2 of the anchor 1 can be easily inserted into the prepared 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.
In addition, the pilot hole drilling process may be provided with a pilot hole roughening process that roughens the surface by, for example, scraping the hole wall 11a (inner peripheral surface) of the pilot hole 11 with a wire brush or the like. 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 holes 11, and in the anchor embedding step, as shown in FIG. The embedded portion 2 is inserted into 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 groove 2 c on the outer peripheral surface of the embedded portion 2, the adhesion area can be expanded and the anchor effect after the adhesive 12 is cured can be improved.
The same effect can be obtained by forming continuous ridges or discontinuous ridges at random or at predetermined intervals instead of the spiral groove 2c. Moreover, you may change the width | variety and depth of uneven | corrugated | grooved parts, such as the spiral groove 2c, according to the kind (viscosity) of an adhesive agent. Further, an adhesive with a capsule may be used.

Next, in the temporary fixing step, the anchor 1 is fixed so that the bottom surface of the fitting member 6 is brought into contact with the bottom surface of the lower hole 11 and the diameter-expanded portion 4 is expanded by the diameter-expanding insertion portion 6b of the fitting member 6. The collar part 2a is struck and pushed into the lower hole 11 of the base material 10.
Since the engaging portion 6c of the fitting member 6 is brought into contact with and locked to the lower end of the outer peripheral wall 4b of the fitting hole 4a after the diameter expansion, the diameter expanding portion 4 can be reliably expanded by a certain amount. The outer periphery of the temporary fixing member 5 can be pressed against the hole wall 11a of the lower hole 11, and the anchor 1 can be temporarily fixed.

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, and the tapered portion is formed on the bottom surface portion of the flange portion 2a, the tapered portion of the flange portion 2a is formed on the opening edge portion 11b of the lower hole 11. 2b can be fastened to hold the buried portion 2, the anchor 1 is not buried in the lower hole 11, and only the buried portion 2 can be reliably buried in the lower hole 11. 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 in the lower hole 11 of the base material 10, the embedment part 2 is used as a lower hole by utilizing the collar part 2a. 11 and is excellent in workability.
(3) The expanded diameter portion 4 includes a fitting hole 4a that is drilled from the lower end of the embedded portion 2 to a predetermined height in parallel with the longitudinal direction of the shaft core of the embedded portion 2, and the longitudinal direction of the shaft core of the embedded portion 2. There are a plurality of dividing grooves 4c formed in parallel on the outer peripheral wall 4b of the reduced diameter portion 3c and the fitting hole 4a and dividing the lower end side of the reduced diameter portion 3c and the outer peripheral wall 4b, and the fitting member 6 faces downward. By having the enlarged diameter insertion portion 6b that is expanded larger than the diameter of the fitting hole 4a, the upper end of the anchor 1 is pressed against the lower hole 11, and the fitting member 6 is pressed from the lower end of the fitting hole 4a. The diameter-enlarged portion 4 can be easily expanded without using a special tool or the like by inserting the diameter-enlarged insertion portion 6b. 5 can be expanded in the diameter direction, the outer periphery of the temporary fixing member 5 can be pressed against the hole wall 11a of the lower hole 11, The anchor 1 without constant member 5 itself burdening and Hahazai 10 deformed can be temporarily fixed to the lower hole 11, can be reliably construction of the anchor 1 at the edge free size is small place.
(4) Since the fitting member 6 has the stepped locking portion 6c formed at the lower end of the enlarged diameter insertion portion 6b, the enlarged diameter insertion portion 6b is inserted into the fitting hole 4a of the enlarged diameter portion 4. At this time, since the locking portion 6c is brought into contact with and locked to the lower end of the outer peripheral wall 4b of the fitting hole 4a, the insertion amount of the fitting member 6 can be restricted, and the diameter expansion amount of the diameter expansion portion 4 Can always be kept constant, the outer periphery of the temporary fixing member 5 can be reliably brought into pressure contact with the hole wall 11a of the lower hole 11, and variations in the drawing strength can be reduced.
(5) Since the temporary fixing member 5 is formed of a soft metal or an elastic body in a substantially cylindrical shape, the temporary fixing member 5 is surely expanded in the diameter direction in accordance with the expansion of the diameter expansion portion 4. It is possible to absorb the impact at the time of diameter expansion, and the outer periphery of the temporary fixing member 5 can be pressed into contact with the hole wall 11a of the lower hole 11 without imposing a burden on the base material 10. It spreads and a big frictional resistance can be obtained, rotation of the anchor 1 etc. can be prevented reliably, and the temporary fixing effect of the anchor 1 can be improved.
(6) By expanding the diameter of the substantially cylindrical temporary fixing member 5 inserted into the outer periphery of the enlarged diameter portion 4, the outer periphery of the temporary fixing member 5 can be pressed and fixed to the hole wall 11 a of the lower hole 11. The fixing member 5 can evenly press the hole wall 11a of the lower hole 11, and a certain pulling strength can be secured in the temporarily fixed state.
(7) Since the anchor 1 can be temporarily fixed to the lower hole 11 of the base material 10 by the temporary fixing member 5, even before the adhesive 12 is completely solidified and fixed to the anchor 1, the female screw portion 3a of the embedded portion 2 is fixed. When the fixing bolt 13 is screwed, the anchor 1 does not rotate together due to the frictional resistance to the enlarged diameter portion 4 and the lower hole 11 of the temporary fixing member 5, and the fixing bolt 13 is securely connected to the female screw portion 3a. The base material 10 and the fixed object 14 can be fixed.
(8) Since the anchor 1 is temporarily fixed to the pilot hole 11 of the base material 10 by the 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 can be improved. It is possible to reduce the variation in the drawing strength.
(9) Since the communication hole 3b has a hole diameter less than or equal to the inner diameter of the female screw portion 3a between the female screw portion 3a and the fitting hole 4a, the anchor 1 can be reduced in weight and the fixing bolt screwed to the female screw portion 3a The lower end of 13 does not interfere with the fitting member 6, and damage to the fitting member 6, the enlarged diameter portion 4, etc. can be prevented.
(10) 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.
(11) By having the tapered portion 2b formed on the bottom surface portion 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 diameter of the temporary fixing member 5 is increased. Since the outer periphery of the temporary fixing member 5 can be uniformly brought into pressure contact with the hole wall 11a of the lower hole 11 of the base material 10, the embedded portion 2 is temporarily fixed to the lower hole 11 of the base material 10 more reliably. can do.
(12) Since the outer peripheral wall of the reduced diameter portion 3c is formed thicker than the outer peripheral wall 4b of the fitting hole 4a, the mechanical strength at the time of diameter expansion of the enlarged diameter portion 4 is excellent.
(13) By forming the enlarged diameter portion 4 at the lower end of the embedded portion 2 through the step 4d, the enlarged diameter portion 4 is expanded when the enlarged diameter insertion portion 6b is inserted. Easy and excellent workability.

The temporary fixing structure using the anchor in the first embodiment has the following effects.
(14) 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.
(15) 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, 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.
(16) 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.
(17) The temporary fixing member 5 and the fitting member 6 can regulate the amount of diameter expansion of the enlarged diameter portion 4, prevent the lower hole 11 from being broken, and securely fix the anchor 1 temporarily to the lower hole 11. can do.

The temporary anchor fixing method according to Embodiment 1 has the following effects.
(18) 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 in accordance with the length of the embedded portion 2 and the locking portion 6c of the anchor 1. The anchor 1 can be prevented from protruding from the base material surface 10a, and the base material 10 and the fixed object 14 can be reliably fixed.
(19) As a post-process of the pilot hole drilling process, by performing a pilot hole cleaning process for removing chips and moisture accumulated in the pilot hole 11 with a brush, a blower or the like, the anchor 1 to the pilot hole 11 is The embedded portion 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 that is filled in the subsequent adhesive filling step. The pull-out strength of the anchor 1 can be ensured, and the reliability can be improved.
(20) Since there is an adhesive filling step of filling the adhesive hole 12 in the lower hole 11, the outer peripheral surface of the embedded portion 2 of the anchor 1 temporarily fixed in the lower hole 11 can be firmly fixed with the adhesive 12. The pull-out strength of the anchor 1 can be improved.
(21) Moreover, since it has an adhesive filling process, the space 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 to prevent intrusion of rainwater or moisture in the air. The corrosion of the anchor 1 can be prevented and the durability can be improved.
(22) The embedded portion 2 of the anchor 1 is inserted and embedded in the lower hole 11 by the anchor embedding process, and the fitting member 6 is pressed by the temporary fixing process, whereby the enlarged diameter portion 4 is changed in the diameter direction (the lower hole 11). Since the outer periphery of the temporary fixing member 5 is brought into pressure contact with the hole wall 11a of the lower hole 11, the embedded portion 2 of the anchor 1 is temporarily fixed to the lower hole 11 of the base material 10. Even before the adhesive 12 filled in the adhesive filling process is solidified, the fixing bolt 13 can be screwed onto the female screw portion 3a of the embedded portion 2, and the fixing material 14 can be attached to the base material 10. Fixing can be performed.
(23) By pressing the fitting member 6 in the temporary fixing step, the diameter-expanded portion 4 is expanded in the diameter direction, and the outer periphery of the temporary fixing member 5 is pressed against the hole wall 11a of the lower hole 11. The anchor 1 can be temporarily fixed to the lower hole 11 without imposing a burden on the surface, and the occurrence of cracks and the like can be prevented even in places where the marginal dimension is small, so that the anchor 1 can be reliably constructed.
(24) Since the flange portion 2a is formed on the outer periphery of the upper end of the embedded portion 2 of the anchor 1, and the tapered portion 2b is formed on the bottom surface portion of the flange portion 2a, the base material 10 is drilled in the pilot hole drilling step. By forming the hole diameter of the lower hole 11 smaller than the outer shape of the flange portion 2a and inserting the embedded portion 2, the center of the lower hole 11 and the center of the anchor 1 are automatically aligned, and the tapered portion 2b. Is fastened to the opening edge 11b of the lower hole 11 and is stably held, and the workability in the subsequent process can be improved.

(Embodiment 2)
The anchor according to Embodiment 2 of the present invention will be described below with reference to the drawings. In addition, the same code | symbol is attached | subjected to the thing similar to Embodiment 1, and description is abbreviate | omitted.
FIG. 4 is a cross-sectional side view of an essential part showing the anchor in the second embodiment.
In FIG. 4, the anchor in the second embodiment is different from the first embodiment in that the anchor 1a is connected to the upper end of the embedded portion 2 in parallel with the longitudinal direction of the axial center of the embedded portion 2 instead of the female screw portion 3a. A point having a male screw part 3d, a point having an embedded male screw part 2d formed on the outer peripheral surface with the same diameter as the outer diameter of the male screw part 3d in place of the spiral groove 2c of the buried part 2, and a flange part 2a having a male screw part This is a point that the height is adjustable with respect to 3d and the embedded male screw portion 2d.

The temporary fixing structure using the anchor of Embodiment 2 formed as described above will be described with reference to the drawings.
FIG. 5 is a cross-sectional side view of an essential part showing a temporary fixing structure using the anchor according to the second embodiment.
Since it has the male screw part 3d continuously provided at the upper end of the burying part 2, the base material can be easily obtained by simply inserting the fixing hole 14a of the fixed object 14 into the male screw part 3d of the anchor 1a and screwing the fixing nut 16 therewith. The object 14 can be fixed to 10 and the workability is excellent.

In the anchor fixing method of the anchor according to the second embodiment configured as described above, the embedment depth of the embedment portion 2 is increased by moving the collar 2a of the anchor 1a up and down as a pre-process or a post-process of the anchor embedment process. Since it is the same as that of Embodiment 1 except having the embedding depth adjustment process to adjust, only the embedding depth adjustment process is demonstrated here.
The anchor 1a has an embedded male screw portion 2d formed on the outer peripheral surface of the embedded portion 2 so as to have the same outer diameter as the male screw portion 3d. Since it can be screwed freely, in the embedment depth adjusting step, the height of the flange 2a can be easily adjusted according to the depth of the lower hole 11 of the base material 10. Thereby, the taper portion 2b of the flange portion 2a can be securely fastened to the opening edge portion 11b of the lower hole 11 regardless of the depth of the lower hole 11, and the anchor 1a can be held by the base material 10. In addition, the lower end surface of the fitting member 6 can be surely brought into contact with the bottom surface of the lower hole 11, and the enlarged diameter insertion portion 6 b of the fitting member 6 is inserted into the fitting hole 4 a to Since the diameter can be increased, it is excellent in workability and versatility.

In the present embodiment, the flange portion 2a is screwed into the male screw portion 3d or the embedded male screw portion 2d. Alternatively, a cylindrical portion whose outer diameter is substantially equal to the hole diameter of the lower hole 11 of the base material 10 may be formed, and may be detachably inserted into the embedded portion 2. Thereby, the cylindrical portion is fitted between the outer periphery of the embedded portion 2 and the inner periphery of the lower hole 11 of the base material 10, and the bottom surface of the flange portion 2a can be easily and reliably locked to the base material surface 10a. Since the center of the lower hole 11 and the center of the embedded portion 2 can be substantially matched, the embedded portion 2 can be held upright and excellent in workability.
Further, the plurality of flange portions 2a may be screwed into the male screw portion 3d or the embedded male screw portion 2d with an arbitrary interval. As a result, the position (height) of the fixed object 14 can be adjusted by the flange portion 2a to form a gap between the base material 10 and the fixed object 14, and the gap is filled with a filler such as mortar. Thus, the fixing can be further strengthened, or a plate-like member such as a heat insulating material or an advertisement can be sandwiched and fixed in layers.

As described above, the anchor according to the second embodiment has the following operation in addition to the operation of the first embodiment.
(1) By having a male screw portion 3d projecting from the upper end of the buried portion 2 parallel to the longitudinal direction of the shaft core of the buried portion 2, the fixing hole 14a of the fixed object 14 is inserted into the male screw portion 3d for fixing. The fixed object 14 can be fixed to the base material 10 only by screwing the nut 16.
(2) By setting the embedded male screw part 2d on the outer peripheral surface of the embedded part 2 to the same diameter as the outer diameter of the male screw part 3d projecting from the upper end of the embedded part 2, the embedded male screw part 2d and the male screw part 3d are They can be formed together by processing, and the workability can be improved.
(3) Since the embedded male screw portion 2 d is formed on the outer peripheral surface of the embedded portion 2, the adhesive 12 filled between the outer periphery of the embedded portion 2 and the hole wall 11 a of the lower hole 11 and the outer periphery of the embedded portion 2. The biting with the surface can be improved and the fixing of the prepared hole 11 of the base material 10 and the embedded portion 2 can be made stronger.
(4) When the collar part 2a is screwed into the male screw part 3d or the embedded male screw part 2d, the height of the collar part 2a can be freely set according to the depth of the lower hole 11 formed in the base material 10. In particular, when constructing on a horizontal surface such as a floor surface, the embedded portion 2 can be held by fastening the tapered portion 2b of the flange portion 2a to the opening edge portion 11b of the lower hole 11, which is versatile. Excellent workability.

The temporary fixing structure using the anchor in the second embodiment has the following effects.
(5) Since the anchor 1a is embedded and temporarily fixed in the lower hole 11 formed in the base material 10, the anchor 1a can be attached with a small number of man-hours by the fixing nut 16 screwed to the male thread portion 3d of the anchor 1a. Thus, the fixed object 14 can be tightly fixed to the base material 10.
(6) Since the fixing object 14 is fixed to the base material 10 via the anchor 1a by the fixing nut 16 screwed to the male screw portion 3d of the anchor 1a, the adhesive 12 filled in the prepared hole 11 is used. Even if it is not completely cured, the fixed object 14 does not move, the work can be advanced, and the construction period can be shortened.
(7) Since the fixing object 14 is fixed to the base material 10 via the anchor 1a by the fixing nut screwed to the male thread portion 3d of the anchor 1a, the adhesive 12 can be removed over time only by leaving it alone. It hardens | cures, the anchor 1a changes from a temporarily fixed state to a fixed state, and the to-be-fixed object 14 and the base material 10 can be fixed firmly.
(8) Since the flange portion 2a can be disposed so as to be vertically movable with respect to the male screw portion 3d and the embedded male screw portion 2d, the plurality of flange portions 2a can be screwed together, and the base material 10 and the fixed object 14 An arbitrary gap can be formed between the base material 10 and the fixed object 14 after the height is adjusted by freely adjusting the height of the flange 2a. The base material 10 and the object to be fixed 14 can be fixed by filling mortar or the like, and the workability is excellent.
(9) When a plurality of flanges 2a are arranged in the male screw portion 3d and the embedded male screw portion 2d, a gap can be easily formed between the base material 10 and the fixed object 14, and therefore a heat insulating material is provided in the gap. And members such as advertisements can be interposed, and it is excellent in functionality and practicality.

According to the anchor temporary fixing method in the second embodiment, in addition to the operation in the first embodiment, the following operation is provided.
(10) As a pre-process or a post-process of the anchor burying step, the base material 10 has a burying depth adjusting step of adjusting the burying depth of the burying portion 2 by moving the collar 2a of the anchor 1a up and down. The height of the flange portion 2a can be freely adjusted according to the depth of the drilled lower hole 11, and particularly when the construction is performed on a horizontal surface such as a floor surface, the tapered portion 2b of the flange portion 2a is formed in the lower hole 11. The embedded portion 2 can be held by being fastened to the opening edge portion 11b, and the anchor 1a can be securely fixed temporarily.
(11) By having the embedment depth adjustment step, the lower surface of the fitting member 6 inserted from the lower end of the fitting hole 4a can be brought into contact with the bottom surface of the lower hole 11 and pressed. Since the diameter-expanded portion 4 can be expanded regardless of the processing accuracy of 11, the outer periphery of the temporary fixing member 5 can be brought into pressure contact with the hole wall 11a of the lower hole 11, and the anchor 1a can be temporarily fixed. it can.

(Embodiment 3)
An anchor according to Embodiment 3 of the present invention will be described below with reference to the drawings. In addition, the same code | symbol is attached | subjected to the thing similar to Embodiment 1, and description is abbreviate | omitted.
FIG. 6A is a plan view showing an anchor in the third embodiment, FIG. 6B is a cross-sectional side view of an essential part showing the anchor in the third embodiment, and FIG. 7 is an anchor in the third embodiment. It is a principal part cross-sectional side view which shows the temporarily fixed state.
In FIG. 6, the anchor in the third 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 flange 2a of the anchor 1b and the fitting of the anchor 1b. The joint member 6 is inserted into the fitting hole 4a of the enlarged diameter portion 4 from the flange portion 2a side of the embedded portion 2 and is held on the inner walls of the communication hole 3b and the fitting hole 4b.

The reduced diameter portion 3c is formed continuously with the lower end of the communication hole 3b, and the top of the dividing groove 4c is formed from the lower end to the upper end of the reduced diameter portion 3c. Thereby, when the enlarged diameter insertion portion 6b of the fitting member 6 is inserted from the upper end side of the fitting hole 4a, the outer peripheral wall 4b of the enlarged diameter portion 4 is deformed around the vicinity of the base (upper end) of the reduced diameter portion 3c. The diameter can be surely expanded.
Further, since the fitting member 6 is held inside the embedded portion 2, the possibility that the fitting member 6 falls off and is lost is low, and the reliability and practicality are excellent.

Since the temporary fixing structure using the anchor of the third embodiment formed as described above is the same as that of the first embodiment, the description thereof is omitted.
Next, a method for temporarily fixing the anchor of the third embodiment formed as described above will be described with reference to the drawings.
FIG. 8 (a) is a cross-sectional side view of the main part showing the pilot hole drilling process of the temporary fixing method, and FIG. 8 (b) is a cross-sectional side view of the main part showing the adhesive filling process of the temporary fixing method. 8 (c) is a cross-sectional side view of the main part showing an anchor embedding step and a temporary fixing step of the temporary fixing method.
In FIG. 8, 20 is a rod-shaped member inserted into the female threaded portion 3a so that the lower end is in contact with the upper surface of the fitting member 6, and 21 is hitting the upper end of the rod-shaped member 20 to insert the fitting member 6 into the fitting hole 4a. It is a hammer to make it.

Since the anchor fixing method of the third embodiment is the same as that of the first embodiment except for the temporary fixing process, only the temporary fixing process will be described here.
8C, the rod-like member 20 is inserted into the female screw portion 3a of the buried portion 2 buried in the lower hole 11 so that the lower end of the rod-like member 20 is in contact with the upper surface of the fitting member 6. Hit with.
By engaging the locking portion 6c of the fitting member 6 with the upper end of the outer peripheral wall 4b of the fitting hole 4a, the diameter-expanding portion 4 can be reliably expanded by a certain amount. The outer periphery can be pressed against the hole wall 11a of the lower hole 11, and the anchor 1b can be temporarily fixed.

Next, the fixing bolt screwing step after the temporary fixing of the anchor in Embodiment 3 will be described.
FIG. 9A is a perspective view showing a fixing bolt screwing process, FIG. 9B is a cross-sectional side view of an essential part showing the fixing bolt screwing process, and FIG. 10 is a fixing bolt screwing process. It is a principal part cross-section side view which shows the completion | finish state.
In FIG. 9, reference numeral 25 denotes an adhesive 12 disposed between the upper surface of the flange 2 a of the anchor 1 b and the bottom surface of an anchor holding jig 30 described later and filled in the lower hole 11 of the base material 10. A protective sheet made of synthetic resin that prevents the anchor holding jig 30 from adhering to the anchor holding jig 30 when it overflows 10a, has a hole diameter larger than the inner diameter of the internal thread portion 3a of the embedded portion 2 in the substantially central portion of the protective sheet 25. The formed insertion hole 25b is a jig mounting opening drilled in the protective sheet 25 in accordance with the position of the anchor holding recess 2e drilled in the upper surface of the flange 2a. An anchor holding jig 30a that is attached to the anchor 1b and holds the anchor 1b in the fixing bolt screwing process in which the fixing bolt 13 is screwed onto the female thread portion 3a of the anchor 1b in the third embodiment, and 30a is an anchor holding jig 30 of The holding part, 30b is an opening part of the anchor holding jig 30 formed by opening the side part at the end part of the grip part 30a, and 30c is projected on the back surface of the anchor holding jig 30 on both sides of the opening part 30b. It is a convex part fitted to the anchor holding concave part 2e of the anchor 1b.

First, the anchor holding jig 30 is mounted so that the protective sheet 25 is sandwiched between the upper surface of the flange portion 2 a of the anchor 1 b and the bottom surface of the anchor holding jig 30.
The shape of the protective sheet 25 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.
By forming the hole diameter of the insertion hole 25a of the protective sheet 25 to be larger than the inner diameter of the female thread part 3a of the embedded part 2 and forming the opening 30b in the anchor holding jig 30, the fixing bolt 13 can be removed from the insertion hole 25a. It can be inserted and screwed into the female screw portion 3a. At this time, the embedded portion 2 can be held by inserting the convex portion 30c of the anchor holding jig 30 through the jig mounting opening 25b of the protective sheet 25 and fitting it into the anchor holding concave portion 2e of the anchor 1b. it can. In addition to the temporary fixing by the temporary fixing member 5, the embedded portion 2 can be reliably prevented by holding the embedded portion 2 by the convex portion 30 c of the anchor holding jig 30, so that the female screw portion 3 a and the fixing bolt 13 can be firmly screwed. Can be fixed.
Since the anchor holding jig 30 only fits the convex portion 30c into the anchor holding concave portion 2e, it is easy to attach and detach and is excellent in workability. Further, since a part of the opening 30b of the anchor holding jig 30 is opened laterally, the anchor holding jig 30 can easily be laterally formed even after the fixing bolt 13 is screwed to the anchor 1b. It can be removed and has excellent workability.

After completion of the fixing bolt screwing process, the protection sheet 25 and the anchor holding jig 30 are removed, and the state shown in FIG. 10 is obtained. Note that after the fixing bolt screwing process, only the anchor holding jig 30 may be removed and the protective sheet 25 may be left as it is.
Thereafter, the fixing bolt 13 is inserted into the fixing hole 14a of the fixed object 14, and the fixing nut 16 is screwed through the washer 15, thereby obtaining the same state as the temporary fixing structure shown in FIG. be able to.
In this embodiment, the anchor holding recess 2e is drilled on the upper surface of the flange 2a of the anchor 1b. Instead of the anchor holding recess 2e, two or more pin-shaped protrusions and at least the outer side of the upper surface of the flange 2a are provided. An anchor holding convex portion may be formed by projecting a projection having a pair of parallel portions.
The anchor holding concave portion 2e and the anchor holding convex portion can be provided also on the anchor 1 in the first embodiment and the flange portion 2a of the anchor 1a in the second embodiment, and the fixing bolt 13 and the fixing nut 16 are screwed. Can be used when Moreover, also when pressing a fitting member in a temporary fixing process, the embedded part 2 can be hold | maintained using the anchor holding recessed part 2e and the anchor holding convex part.

As described above, the anchor according to the third embodiment has the following operation in addition to the operation of the first embodiment.
(1) The expanded diameter portion 4 has a diameter smaller than the inner diameter of the female screw portion 3a, communicates with the reduced diameter portion 3c and is drilled to the lower end of the embedded portion 2, and the longitudinal direction of the shaft core of the embedded portion 2 It has a plurality of dividing grooves 4c which are parallel and have a top part formed from the lower end to the upper end of the reduced diameter part 3c and which divide at least a part of the outer peripheral wall 4b of the fitting hole 4a and the reduced diameter part 3c. By having the enlarged diameter insertion portion 4b that expands larger than the diameter of the fitting hole 4a toward the upper side, the upper end of the fitting member 6 is inserted into the fitting hole 4a by the rod-like member 20 inserted from the female screw portion 3a. The diameter-enlarged portion 4 can be easily expanded simply by inserting the expanded-diameter insertion portion 6b of the fitting member 6 from the upper end of the engagement hole 4a. Since the inserted temporary fixing member 5 can be expanded in the diameter direction, the outer periphery of the temporary fixing member 5 is formed on the hole wall 11 a of the lower hole 11. Can be contact, the anchor 1b without burdening the base member 10 can be temporarily fixed to the lower hole 11, it is possible to perform application of reliably anchor 1b even at the edges free size is small place.
(2) Since the fitting member 6 has the stepped locking portion 6c formed at the upper end of the enlarged diameter insertion portion 6b, the enlarged diameter insertion portion 6b is inserted into the fitting hole 4a of the enlarged diameter portion 4. At this time, since the locking portion 6c is brought into contact with and locked to the upper end of the outer peripheral wall 4b of the fitting hole 4a, the insertion amount of the fitting member 6 can be restricted, and the diameter expansion amount of the diameter expansion portion 4 Can always be kept constant, the outer periphery of the temporary fixing member 5 can be reliably brought into pressure contact with the hole wall 11a of the lower hole 11, and variations in the drawing strength can be reduced.
(3) Since the fitting member 6 is inserted into the fitting hole 4a of the enlarged diameter portion 4 from the upper end, the drilling depth of the lower hole 11 only needs to be the length of the embedded portion 2, and is a rod shape inserted from the female screw portion 3a. The fitting member 6 can be reliably pressed by the member 20, the diameter-expanded portion 4 can be stably expanded by a certain amount, and workability can be improved.
(4) Since the hole diameter of the communication hole 3b formed on the female screw portion 3a side of the fitting hole 4a is equal to the inner diameter of the female screw portion 3a, the lower end of the fixing bolt screwed to the female screw portion 3a is connected to the fitting member 6. Without contact, it is possible to reliably prevent the fitting member 6 and the enlarged diameter portion 4 from being damaged.
(5) Since the anchor holding recess 2e is provided on the upper surface of the flange portion 2a, the anchor holding recess 2e is held when the male screw such as the fixing bolt 13 is screwed into the female screw portion 3a after the temporary fixing is completed. 2 can be prevented, and a male screw such as a fixing bolt 13 can be securely and firmly fixed to the female screw portion 3a.
(6) Continuing to the lower end of the communication hole 3b, the reduced diameter portion 3c is formed, and the top of the dividing groove 4c is formed from the lower end to the upper end (base) of the reduced diameter portion 3c. When the enlarged diameter insertion portion 6b is inserted into the fitting hole 4a, the outer peripheral wall 4b of the enlarged diameter portion 4 can be deformed with the vicinity of the base portion of the reduced diameter portion 3c as a center and reliably expanded.

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.
(7) The fitting member 6 can be simply pressed by simply inserting the rod-like member 20 from the female screw portion 3a of the buried portion 2 buried in the lower hole 11 and hitting the upper end of the rod-like member 20 with the hammer 21. The diameter-enlarged portion 4 can be reliably expanded by a certain amount, and the outer periphery of the temporary fixing member 5 can be uniformly pressed against the hole wall 11a of the lower hole 11 to temporarily fix the anchor 1b.

(Embodiment 4)
FIG. 11A is a plan view showing an anchor embedding process of the anchor temporary fixing method according to the fourth embodiment, and FIG. 11B is a key diagram showing an anchor embedding process of the anchor temporary fixing method according to the fourth embodiment. FIG.
In FIG. 11, the anchor in the fourth embodiment is different from that in the third embodiment in that the outer shape of the flange 2a of the anchor 1c is not circular, and is formed in a part of the outer side of the flange 2a instead of the anchor holding recess 2e. This is a point having a pair of parallel portions 2f.
Thereby, a general-purpose tool such as a spanner can be engaged with the parallel portion 2f of the flange portion 2a without using the dedicated anchor holding jig 30 or the like, and the embedded portion 2 can be held. Temporary fixing can be performed similarly to the anchor 1b.
In the present embodiment, the pair of parallel portions 2f 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 fourth embodiment will be described.
In FIG. 11, the anchor fixing method in the fourth embodiment is different from that in the third embodiment in that, in the anchor embedding process, the protective sheet 25 is provided between the lower surface of the flange 2a of the anchor 1c and the base material surface 10a. It is the point where it is arranged. In this case, the embedded portion 2 can be easily inserted by forming the insertion hole 25a of the protective sheet 25 with a hole diameter equal to or larger than the outer diameter of the embedded portion 2 of the anchor 1c.
Since the protective sheet 25 is formed of soft synthetic rubber, synthetic resin, or the like, the peripheral edge of the insertion hole 25a is deformed so as to follow the tapered portion 2b of the flange portion 2a, and the flange portion 2a and the protective sheet 25 are formed by the tapered surface 25c. The adhesive 12 can be prevented from overflowing to the surface side of the protective sheet 25 from the gap between the outer periphery of the embedded portion 2 and the insertion hole 25a, and the workability is excellent. In addition, you may form the taper surface 25c previously in the insertion hole 25a periphery of the protection sheet 25 according to the taper part 2b of the collar part 2a.
Further, when the protective sheet 25 is formed of a transparent or translucent material, the overflow of the adhesive 12 can be confirmed with the naked eye, so that filling failure of the adhesive 12 can be prevented in advance and the reliability is excellent. .

As described above, the anchor according to the fourth embodiment has the following functions in addition to the functions of the third embodiment.
(1) By having at least one pair of parallel portions 2f 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 fourth embodiment, in addition to the functions in the third embodiment, the following actions are provided.
(2) In the anchor embedding step, the protective sheet 25 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 in the pilot hole 11 of the base material 10 and overflowed. 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 25c is formed at the periphery of the insertion hole 25a of the protective sheet 25, so that the protective sheet 25 can be brought into close contact with the tapered portion 2b of the flange portion 2a, and the outer periphery of the embedded portion 2 and the insertion hole 25a. It is possible to prevent the adhesive 12 from overflowing from the gap to the surface side of the protective sheet 25 and to have excellent reliability.

  The present invention is embedded in a base material of various structures such as a foundation, a wall, a pillar, a fence, etc. formed of concrete, mortar, block, stone, wood, metal plate, etc., for fixing an object to be fixed to the base material. Anchor and its temporary fixing method and temporary fixing structure using it, as a base material for various structures such as foundations, walls, pillars, fences, etc., made of concrete, mortar, block, stone, wood, metal plate, etc. Easy and reliable temporary fixing with a simple configuration, excellent workability, strong fixing without imposing a burden on the base material, excellent reliability, and the base material and the object to be fixed can be tightly connected and high Provision of anchors with pulling strength and excellent durability, temporary fixing methods that can easily and reliably temporarily fix the anchors, and ensure workability and reliability in the post-process, and base materials using the same And fixing the object to be fixed in a short time It provides a temporary fixing structure with excellent workability and productivity that can be used in practice, and can be suitably used for fixing the manhole receiving frame that requires a particularly high pulling strength. Property and durability can be improved.

(A) Main part sectional exploded side view showing an anchor in the first embodiment (b) Main part sectional side view showing the anchor in the first embodiment 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 process of the temporary fixing method (b) Main part cross-sectional side view showing the adhesive filling process of the temporary fixing method (c) Anchor embedding process and temporary fixing of the temporary fixing method Cross-sectional side view of the main part showing the process Cross-sectional side view of the main part showing the anchor in the second embodiment Cross-sectional side view of a main part showing a temporary fixing structure using the anchor of the second embodiment (A) Plan view showing an anchor in the third embodiment (b) Main part cross-sectional side view showing the anchor in the third embodiment Cross-sectional side view of the main part showing a temporarily fixed state of the anchor in the third embodiment (A) Main part cross-sectional side view showing the pilot hole drilling process of the temporary fixing method (b) Main part cross-sectional side view showing the adhesive filling process of the temporary fixing method (c) Anchor embedding process and temporary fixing of the temporary fixing method Cross-sectional side view of the main part showing the process (A) Perspective view showing fixing bolt screwing step (b) Main part cross-sectional side view showing fixing bolt screwing step Cross-sectional side view of the main part showing the end state of the fixing bolt screwing process (A) Plan view showing anchor embedding process of anchor temporary fixing method in embodiment 4 (b) Main part cutting showing anchor embedding process of anchor temporarily fixing method in embodiment 4

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 1a, 1b, 1c Anchor 2 Embedded part 2a Ridge part 2b Tapered part 2c Helical groove 2d Embedded male thread part 2e Anchor holding recessed part 2f Parallel part 3a Female thread part 3b Communication hole 3c Reduced diameter part 3d Male thread part 4 Expanded part 4a Fitting Joint hole 4b Outer peripheral wall 4c Dividing groove 4d Step 5 Temporary fixing member 6 Fitting member 6a Cylindrical insertion portion 6b Expanded insertion portion 6c Locking portion 10 Base material 10a Base material surface 11 Lower hole 11a Hole wall 11b Opening edge portion 12 Adhesion Agent 13 Fixing bolt 14 Fixed object 14a Fixing hole 14b Counterbore 15 Washer 16 Fixing nut 20 Bar-shaped member 21 Hammer 25 Protective sheet 25a Insertion hole 25b Jig mounting opening 25c Tapered surface 30 Anchor holding jig 30a Holding part 30b Opening 30c Convex

Claims (10)

  The buried part is buried in a base hole made of concrete, mortar, block, stone, wood, metal plate, etc. And an anchor that is fixed by a synthetic resin or an adhesive filled between the hole wall of the lower hole and tightly connects the base material and the object to be fixed, and (a) the longitudinal direction of the shaft core of the embedded portion; A female screw portion formed in parallel from the upper end of the embedded portion to a predetermined depth, or a male screw portion connected to the upper end of the embedded portion in parallel with the longitudinal direction of the axial center of the embedded portion; and (b) the embedded portion. A fitting hole drilled from the lower end of the buried portion to a predetermined height parallel to the longitudinal direction of the shaft core, and formed on the outer peripheral wall of the fitting hole parallel to the longitudinal direction of the shaft core of the buried portion. A diameter-enlarged portion having a plurality of dividing grooves for dividing the outer peripheral wall; and (c) a substantially circular shape made of a soft metal or elastic body. A temporary fixing member formed in a shape and externally inserted in the enlarged diameter portion, and (d) inserted into the enlarged diameter portion from the lower end of the fitting hole and having a diameter larger than the diameter of the fitting hole toward the lower side. An enlarged diameter insertion portion formed by expanding, and a stepped engagement portion formed at the lower end of the enlarged diameter insertion portion and abutted and engaged with the lower end of the outer peripheral wall of the fitting hole. An anchor having a fitting member.   The buried part is buried in a base hole made of concrete, mortar, block, stone, wood, metal plate, etc. And an anchor that is fixed by a synthetic resin or an adhesive filled between the hole wall of the lower hole and tightly connects the base material and the object to be fixed, and (a) the longitudinal direction of the shaft core of the embedded portion; A female screw portion formed in parallel from the upper end of the embedded portion to a predetermined depth; (b) a reduced diameter portion formed at a lower portion of the female screw portion; and (c) a diameter smaller than the inner diameter of the female screw portion. A fitting hole drilled to the lower end of the buried portion, and a top portion formed from the lower end to the upper end of the reduced diameter portion in parallel with the longitudinal direction of the axial center of the buried portion. A diameter-enlarged portion having a plurality of dividing grooves that divide at least a part of the outer peripheral wall and the reduced-diameter portion; and (d) A temporary fixing member formed in a substantially cylindrical shape with a qualitative metal or an elastic body and externally inserted into the enlarged diameter portion; and (e) the enlarged diameter portion is inserted from the upper end of the fitting hole and is directed upward. A diameter-enlarged insertion portion that is formed to expand to a diameter larger than the diameter of the fitting hole, and a stepped shape that is formed at the upper end of the enlarged-diameter insertion portion and is in contact with and locked to the outer periphery of the upper end of the fitting hole. And a fitting member having a locking portion.   The anchor according to claim 1, further comprising a collar portion formed or disposed on an outer periphery of an upper end of the embedded portion.   The anchor according to any one of claims 1 to 3, further comprising a plurality of protrusions or uneven portions formed on an outer peripheral surface of the embedded portion.   The anchor according to claim 1, further comprising an embedded male screw portion formed on the outer peripheral surface of the embedded portion so as to have the same diameter as the outer diameter of the male screw portion.   The anchor according to claim 3 or 5, wherein the flange portion is screwed to the male screw portion or the embedded male screw portion so as to be adjustable in height.   The inside of an anchor holding recessed part drilled in the upper surface of the said collar part, or an anchor holding convex part projected on the upper surface of the said collar part, The inside of Claim 3 thru | or 6 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 7. An anchor embedding step of inserting the embedded portion of the anchor, and pressing the fitting member expands the diameter-expanded portion in the diameter direction so that the outer periphery of the temporary fixing member is brought into contact with the hole wall of the lower hole A method of temporarily fixing an anchor, comprising: a temporary fixing step.   It has the embedding depth adjustment process which moves the said collar part of the anchor of Claim 6 up and down as a pre-process or a back process of the anchor embedding process, and adjusts the embedding depth of the embedding part. The method for temporarily fixing an anchor according to claim 8. The anchor according to any one of claims 1 to 7, wherein the anchor is embedded and temporarily fixed in the lower hole formed in the base material, and a fixing bolt screwed into the female thread portion of the anchor, or An anchor comprising: a fixing nut screwed to the male screw portion; and the fixed object tightly fixed to the base material through the anchor by the fixing bolt or the fixing nut. Temporary fixing structure using

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