JP6731204B2 - Embedded anchor aid - Google Patents

Description

Auxiliary material that enhances the orthogonal force strength (shear force strength) with respect to the axial direction at the surface part of the base material structure (joint base material) in which anchor bars are embedded in the base material such as concrete or the joint boundary (joint surface) Embedded anchor aids used as

Conventionally, as the anchor material to be installed on the surface part of the base material structure (joint base material) in which the anchor bars are embedded in the base material such as concrete or the joint boundary (joint surface), An anchor bolt support including a rotating means provided near the bottom is disclosed (see Patent Document 1).
Further, there is disclosed an insert device in which an insert body embedded in a concrete structure and used as a female member has a ceramic body (see Patent Document 2). The main body of the insert device has a tapered receiving surface on the outer peripheral surface of which the outer diameter decreases toward the lower end of the main body, and has an overall spherical shape that bulges outward.

Japanese Utility Model Publication No. 7-47527 Japanese Utility Model Publication No. 5-6326

However, in these conventional anchors, the resistance force orthogonal to the anchor axis depends on the acupressure strength on the concrete surface portion. For this reason, the strength of the outermost edge of the concrete becomes the maximum strength, and when a force larger than this is applied, the fracture surface expands along the surface portion, and the fracture of the concrete occurs in a wide range.

In such a case, when the shearing force is repeatedly applied, the fracture of the joint surface spreads more than the size of the outer shape of the joint material.

Therefore, in the present invention, the resistance force orthogonal to the anchor axis does not depend on the acupressure strength on the concrete surface portion, and even when a repeated shearing force is applied, the fracture of the joint surface does not greatly spread to the surface portion. An object is to provide an embedded anchor auxiliary material.

(1) A circular side peripheral portion 11R concentrically formed around the through hole 10 in the vertical direction,
A solid (that is, a packing material for a structural material), which is configured by including a slanted peripheral portion 12 formed of a conical surface or a hemispherical surface, which is curved from the side peripheral portion 11R to the top portion with the lower tip as the top portion. A rotating body 1),
An anchor body that is configured by a through hole 10 that vertically penetrates along the rotation axis A1 of the rotating body 1 and that is embedded (permanently) embedded in the vicinity of the base material surface BF of the base material B,
With respect to the base material B in which the anchor muscle A is embedded and fixed, and the opening BD that spreads around the anchor muscle A toward the base material surface BF is formed,
The anchor body is embedded in the opening BD in a state where the anchor muscle A is inserted into the through hole 10 and is above the side peripheral portion 11R (the second base material B2 or the pressing nut 3). ), it is installed in the vicinity of the base material surface BF under a downward pressure,
In a state where the anchor body is embedded and installed, when the anchor muscle A1 above the side peripheral portion 11R receives a shearing force, one side portion of the inclined peripheral portion 12 of the rotary body 1 of the anchor body is An embedded anchor auxiliary material, which is pressure-contacted with a part of an opening BD facing the portion.

When the inclined peripheral portion 12 of the rotating body 1 is brought into pressure contact with the opening portion BD of the base material B, the horizontal shearing force received by the anchor muscle A can be dispersed in the other direction.

(2) When the anchor body is embedded and installed, and when the anchor muscle A1 above the side peripheral portion 11R receives a shearing force, the rotation axis A1 of the rotary body 1 of the anchor body is below one side. Devoted to
One side portion of the inclined peripheral portion 12 in the tilting direction is in surface pressure contact with one side portion of the opening BD facing the one side portion while being displaced downward,
The other side portion of the inclined peripheral portion 12 in the direction opposite to the tilting direction is in surface pressure contact with the other side portion of the opening BD facing the other side portion while shifting upward. Embedded anchor auxiliary material.

(3) Between the hole end of the through hole 10 and the top of the rotating body 1, a chamfered part 120 having curved upper and lower ends is formed over the entire circumference of the hole end of the through hole 10.
The outer boundary edge 122 of the chamfered portion 120 that contacts the lower end of the inclined peripheral portion 12 forms an edge circle having an edge diameter 122D within a range of 102% to 120% with respect to the anchor muscle diameter AD of the anchor muscle A. 1. The embedded anchor auxiliary material according to 1.

(4) The embedded anchor auxiliary material according to claim 1 or 2, wherein the inclined peripheral portion 12 is a partial sphere having a curvature C of a predetermined value or more in a central cross section.

(5) A circular side peripheral portion 11R concentrically formed around the through hole 10 in the vertical direction,
A downward inclined peripheral portion 12 formed of a conical surface or a hemispherical surface, which is curved from the side peripheral portion 11R toward the lower top portion with the lower tip as the top portion;
A solid rotating body 1 configured to include an upper inclined peripheral portion 13 formed of a conical surface or a hemispherical surface, which is curved from the side peripheral portion 11R toward the upper top portion with the upper tip as the apex;
And a through hole 10 that vertically penetrates along the rotation axis A1 of the rotating body 1,
An anchor body that is permanently embedded and installed at a boundary between the first base material B1 and the second base material B2,
With respect to the first base material B1 in which the anchor muscle A is embedded and fixed, and the opening portion BD that spreads around the anchor muscle A toward the base material surface BF is formed,
The anchor body is composed of a second base material B2 that is embedded in the opening BD and is spliced to the upper side of the side peripheral portion 11R while the anchor muscle A is inserted into the through hole 10. The structure is embedded and installed across the boundary surface BF between the first base material B1 and the second base material B2 in a state of being pressed downward from the structure.
In a state where the anchor body is embedded and installed in the first base material B1 and the second base material B2, when the anchor muscle A1 above the side peripheral portion 11R receives a shearing force,
One side part of the inclined peripheral part 12 below the rotary body 1 of the anchor body is in surface pressure contact with a part of the opening BD of the first base material B1 facing the one side part,
The other side part of the inclined peripheral part 13 above the rotating body 1 of the anchor body is in surface contact with a part of the opening BD of the second base material B2 facing the other side part. Anchor auxiliary material.

(6) Between the lower end of the through hole 10 and the lower top of the rotating body 1, a chamfered portion 120 having curved upper and lower ends is formed over the entire circumference of the end of the through hole 10.
A chamfered portion 130 having curved upper and lower ends is formed between the upper end of the through hole 10 and the upper top of the rotating body 1 over the entire circumference of the end of the through hole 10.
The outer boundary end 122 of the chamfered portion 120 that contacts the lower end of the inclined peripheral portion 12 and the outer boundary end 132 of the chamfered portion 130 that contacts the upper end of the inclined peripheral portion 13 are both relative to the anchor muscle diameter AD of the anchor muscle A. The implantable anchor auxiliary material according to claim 5, which forms edge circles having common edge diameters 122D and 132D within a range of 102% to 120%.

(7) A circumferential surface concentrically formed around the through hole 10 in the vertical direction at a predetermined height (axial length) between the lower inclined peripheral portion 12 and the upper inclined peripheral portion 13. A side peripheral portion 11R composed of
In the anchor body, the first base material is so arranged that the side peripheral portion 11R extends between the base material surface BF1 of the first base material B1 and the boundary surface BF of the base material surface BF2 of the second base material B2. The embedded anchor auxiliary material according to claim 5 or 6, which is embedded and installed at a joint-placing boundary between B1 and the second base material B2.

According to the present invention, by taking the above-mentioned means, when an external force (shearing force) orthogonal to the anchor axis is applied, the inclined peripheral portion 12 of the rotating body 1 is brought into surface pressure contact with the opening BD of the base material B, so that the anchor muscle The horizontal shearing force that A receives can be dispersed in the other direction.

As a result, an embedded anchor auxiliary material is provided, which does not depend on bearing strength at the concrete surface portion and does not greatly spread the fracture of the joint surface to the surface portion even when repeated shearing force is applied. This is an issue.

FIG. 3 is an exploded perspective view showing an installation configuration example of the embedded anchor auxiliary material according to the first embodiment of the present invention. FIG. 3 is a central cross-sectional view showing the installation state of the embedded anchor auxiliary material of the first embodiment. The conceptual diagram which shows the generation|occurrence|production direction of the force when a shearing force is received in the installation state of FIG. The center sectional view and the partial enlarged view showing the installation state of the embedding type anchor auxiliary material of Example 2 of the present invention. The center sectional view and the partial enlarged view showing the installation state of the embedding type anchor auxiliary material of Example 3 of the present invention. The conceptual diagram which shows the generation|occurrence|production direction of the force when a shearing force is received in the installation state of FIG. The center sectional view which shows the installation state of the embedded anchor auxiliary material of Example 4 of this invention. The center sectional view which shows the installation state of the embedded anchor auxiliary material of Example 5 of this invention. The center sectional view which shows the installation state of the embedded anchor auxiliary material of Example 6 of this invention.

Hereinafter, an example of a mode for carrying out the invention will be described with reference to the drawings shown as examples. The present invention secures the strength of the surface portion of a base material in which an anchor bar is embedded to project one end, such as a reinforced concrete structure, or the base materials in which the anchor bar is embedded are spliced to the projection extension destination of the anchor bar. It is used to secure the strength of the joint when placing and joining. For example, it can be used in a portion where a force orthogonal to the axial direction is generated, such as a lower portion of a base plate of a steel image column pedestal anchor bolt or a fixing bolt for a car stop such as a parking lot.

Examples of the base material include concrete material, brick material, stone material, asphalt surface and other solidified high compressive strength material, or concrete member before solidification.

The embedded anchor auxiliary material according to the first embodiment of the present invention is
A flat top surface 11 concentrically formed around the through hole 10 in the vertical direction and having a circular side peripheral portion 11R as a peripheral edge;
A solid (that is, a structure including a slanted peripheral portion 12 that is a conical surface or a hemispherical surface and is curved from the side peripheral portion 11R of the top surface 11 toward the top with the lower tip as the top portion. A rotating body 1 composed of a filling body of material),
The rotary body 1 includes a through hole 10 that vertically penetrates along the rotation axis A1. S1 is an inclination line of the outline connecting the lower end of the inclined peripheral portion 12 (the outer boundary end 122 of the chamfered portion 120) to the upper end (the lower end of the side peripheral portion 11R), and forms an elevation angle 12θ with the axis A1. (Figs. 1, 2). The elevation angle 12θ is preferably set in the range of at least 35 degrees and 80 degrees or less, and more preferably in the range of 40 degrees and 50 degrees.

In the installed state, in the vicinity of the base material surface BF of the base material B, with respect to the base material B in which the anchor bar A is embedded and fixed and the opening BD that spreads around the anchor bar A toward the base material surface BF is formed. (Permanently) embedded (Figs. 2 and 3). In this installed state, the anchor body is a structure body that is embedded in the opening BD and is located above the side peripheral portion 11R in a state where the anchor muscle A is inserted into the through hole 10. The nut 3 is embedded and installed in the vicinity of the base material surface BF while receiving a downward pressing force. The pressing nut 3 has a circular pressing plate 31 fixed to the lower end of the nut body 32, and has a screw hole 30 formed in the longitudinal direction for screw-joining with the anchor bar A. The pressing nut 3 constantly applies a pressing force that exceeds twice the weight of the rotating body 1 of the anchor auxiliary agent. It should be noted that as shown in the third and subsequent embodiments, the joint concrete structure B2 may be jointly formed instead of the pressing nut 3.

When the anchor body is embedded and installed and the top surface 11 is pressed, when the anchor muscle A1 above the side peripheral portion 11R receives a shearing force, the inclined peripheral portion 12 of the rotary body 1 of the anchor body is The one side portion is in surface pressure contact with a part of the opening portion BD facing the one side portion (FIG. 3 ).

When the anchor body rotates in a direction tilting to one side in an axial sectional view so that the inclined peripheral portion 12 of the rotating body 1 comes into surface pressure contact with the opening portion BD of the base material B, the anchor muscle A receives the horizontal direction. The shearing force can be dispersed in the other direction.

When the anchor body is embedded and installed, when the anchor muscle A1 above the side peripheral portion 11R receives a shearing force, the rotation axis A1 of the rotary body 1 of the anchor body tilts downward toward one side. ,
One side portion of the inclined peripheral portion 12 in the tilting direction is in surface pressure contact with one side portion of the opening BD facing the one side portion while being displaced downward,
The other side portion of the inclined peripheral portion 12 in the direction opposite to the tilting direction comes into surface pressure contact with the other side portion of the opening BD facing the other side portion while shifting upward (FIG. 3 ).
(Generation of force when receiving shear force)
When a shearing force is generated in the installed state of the present invention, a tensile force RF1 acts on the anchor muscle A1 which is the shaft member, and the anchor body rotates in the direction of one rotation with the center of gravity of the anchor body as the rotation center. Tilt to rotate (clockwise in Figure 3). At this time, on the compression side (lower right portion in FIG. 3) which is a reaction force, the base material B is compressed in the normal direction of the inclined peripheral portion 12 with respect to the base material B in the diagonal direction (the lower right portion in FIG. 3). A force CF is generated that resists by pressing in the direction).

The shear resistance at this time is the tensile force RF1 of the anchor muscle A1 which is the shaft member and the compression of the inclined peripheral surface 12 in the normal direction with respect to the bending moment of the distance from the shear surface to the axial center of gravity of the auxiliary member. It is calculated based on the balance with the anchor axial component CF1 of the force CF.

The force of pressing the base material and resisting it acts on the inclined concave surface of the opening BD provided in the base material. When the base material is a high-strength compressed material such as concrete material, stone material, or brick, a solid material is used. By the surface pressure contact of the anchor body made of the high compressive strength material, it is possible to exhibit a strength about 10 times as high as the compressive strength of the base material.

The resistance mechanism of the present invention is such that, when a shearing force acts on the surface of the base material or outside the base material, the anchor body is viewed in cross section in the space formed by the inclined peripheral surface 12 provided inside the base material. By rotating so as to tilt in one rotation direction, the force for directly pushing the base material in the direction orthogonal to the axis is dispersed and weakened. That is, the shearing force is converted into the compressive force in the normal direction of the inclined peripheral surface 12, and the substantial resistance to the shearing force is based only on the axial orthogonal component CF2 of the compressive resistance force of the base material. As a result, it is possible to prevent the surface of the base material, which is the connecting boundary, from breaking in a wide range.

(Chamfer 120)
Between the hole end of the through hole 10 and the top of the rotating body 1, a chamfered portion 120 having curved upper and lower ends is formed over the entire circumference of the hole end of the through hole 10.

In particular, the outer boundary edge 122 of the chamfered portion 120 that contacts the lower end of the inclined peripheral portion 12 forms an edge circle having an edge diameter 122D within a range of 102% to 120% with respect to the anchor muscle diameter AD of the anchor muscle A ( (Fig. 2). As shown in the enlarged view of FIG. 2, the chamfered portion 120 forms a partial arc having an outer boundary end 122 as an outer end portion and an inner boundary end 121 as an inner end portion in an axial cross section, whereby the anchor body is rotationally tilted. At this time, the lower end of the through hole 10 is prevented from being locked, stress concentration is prevented from occurring in this portion, and the tilting of the rotation is facilitated. In addition, the gap between the anchor streak A, the opening BD, and the anchor body is filled with a resin adhesive G having a lower compressive strength than the anchor body, thereby promoting rotation and tilting of the anchor body.

In the embedded anchor auxiliary material of Example 2 of the present invention shown in FIG. 4, the inclined peripheral portion 12 is a partial sphere having a curvature C of a predetermined value or more in the central cross section. This curvature C is within a range of plus or minus 10% with reference to a curvature whose radius of curvature is either the outer diameter of the top surface 11 or the hole length of the through hole (the distance from the top surface 11 to the inner boundary end 121). Furthermore, the curvature of the outer surface of the top surface 11 as the radius of curvature is within the range of plus or minus 5% of the first reference, and the length of the through hole (from the top surface 11 to the inner boundary). It is preferable that the curvature having any one of the distances to the end 121) as the radius of curvature is within the range of plus or minus 5% of the second reference with the second reference. Alternatively, within the curvature range having the minimum curvature range and the maximum curvature range of the first criterion, the second criterion, and the third criterion, with the curvature having the radius of curvature 12D of the outer boundary end 122 as the third criterion. Is preferably set to.

The embedded anchor auxiliary material of the third embodiment of the present invention shown in FIG. 5 has inclined peripheral portions 12 and 13 at the top and bottom. That is, the embedded anchor auxiliary material of Example 3 was
A circular side peripheral portion 11R concentrically formed around the through hole 10 in the vertical direction,
A downward inclined peripheral portion 12 formed of a conical surface or a hemispherical surface, which is curved from the side peripheral portion 11R toward the lower top portion with the lower tip as the top portion;
A solid rotating body 1 configured to include an upper inclined peripheral portion 13 formed of a conical surface or a hemispherical surface, which is curved from the side peripheral portion 11R toward the upper top portion with the upper tip as the apex;
The rotary body 1 includes a through hole 10 that vertically penetrates along the rotation axis A1.

Then, it is permanently embedded in the boundary between the first base material B1 and the second base material B2 (FIG. 5).
Specifically, with respect to the first base material B1 in which the anchor muscle A is embedded and fixed and the opening portion BD that spreads around the anchor muscle A toward the base material surface BF is formed, the anchor body has the through hole 10 The downward pressing force from the structure made of the second base material B2 that is embedded in the opening BD and is spliced to the upper side of the side peripheral portion 11R with the anchor muscle A inserted therethrough. In the received state, it is embedded and installed across the boundary surface BF between the first base material B1 and the second base material B2.

In this manner, when the anchor body is embedded in the first base material B1 and the second base material B2 and the anchor muscle A1 above the side peripheral portion 11R receives a shearing force,
One side part of the inclined peripheral part 12 below the rotary body 1 of the anchor body is in surface pressure contact with a part of the opening BD of the first base material B1 facing the one side part,
The other side portion of the inclined peripheral portion 13 above the rotating body 1 of the anchor body comes into surface pressure contact with a part of the opening BD of the second base material B2 facing the other side portion (FIG. 6).

(Chamfer 120, 130)
A chamfered portion 120 having curved upper and lower ends is formed between the lower end of the through hole 10 and the lower top of the rotating body 1 over the entire circumference of the hole end of the through hole 10.
A chamfered portion 130 having curved upper and lower ends is formed between the upper end of the through hole 10 and the upper top of the rotating body 1 over the entire circumference of the end of the through hole 10.

The outer boundary end 122 of the chamfered portion 120 that contacts the lower end of the inclined peripheral portion 12 and the outer boundary end 132 of the chamfered portion 130 that contacts the upper end of the inclined peripheral portion 13 are both relative to the anchor muscle diameter AD of the anchor muscle A. An edge circle having a common edge diameter 122D and 132D within the range of 102% to 120% is formed.

Also in the embedded anchor auxiliary material of the fourth embodiment of the present invention shown in FIG. 7, as in the case of the third embodiment, the lower inclined peripheral portion 12 and the upper inclined peripheral portion 13 are side peripheral portions 11R formed by boundaries. As a boundary ridge line and has a continuous upper and lower sides. In the embedded anchor auxiliary material of Example 4, the lower inclined peripheral portion 13 and the upper inclined peripheral portion 12 are both partial spheres having a curvature C of a predetermined value or more in the central cross section.

In the embedded anchor auxiliary material of Example 5 of the present invention shown in FIG. 8, a predetermined height (axial length) is provided between the lower inclined peripheral portion 12 and the upper inclined peripheral portion 13. A side peripheral portion 11R formed of a circumferential surface is formed concentrically around the through hole 10 in the vertical direction.

This anchor body includes a first base material B such that the side peripheral portion 11R extends between the base material surface BF1 of the first base material B1 and the boundary surface BF of the base material surface BF2 of the second base material B2. It is embedded and installed at the jointing boundary between B1 and the second base material B2.

Also in the implantable anchor auxiliary material of the sixth embodiment of the present invention shown in FIG. 9, as in the fifth embodiment, a predetermined height (between the lower inclined peripheral portion 12 and the upper inclined peripheral portion 13 ( A side peripheral portion 11R formed of a circumferential surface is formed concentrically around the through hole 10 in the vertical direction (axial length). In the embedded anchor auxiliary material of Example 6, both the lower inclined peripheral portion 13 and the upper inclined peripheral portion 12 are partial spheres having a curvature C of a predetermined value or more in the central cross section.

This anchor body includes a first base material B such that the side peripheral portion 11R extends between the base material surface BF1 of the first base material B1 and the boundary surface BF of the base material surface BF2 of the second base material B2. It is embedded and installed at the jointing boundary between B1 and the second base material B2.

Others The present invention is not limited to the above-described embodiments, and is appropriately changed in shape without departing from the spirit of the present invention, the number of combined points is changed by an integral or separate structure, the material is changed, and the attached shape or attached parts are added. It is possible to delete a part of the shape or part of the part, combine it with a part of Kochi, or replace it.

Rotating body 1
Through hole 10
Side circumference 11R
Inclined peripheral portion 12, lower inclined peripheral portion 12
Chamfer 120
Outer boundary edge 122
Edge diameter 122D, edge diameter 132D
Upper inclined peripheral portion 13, inclined peripheral portion 13
Chamfer 130
Outer boundary edge 132
Push nut 3
Pressing plate 31
Nut body 32
Screw hole 30
Anchor muscle A
Anchor muscle diameter AD
Rotation axis A1
Base material B
First base material B1
Second base material B2
Opening BD
Base material surface BF
Base material surface BF1
Base material surface BF2
Curvature C
Base material surface BF, boundary surface BF
Anchor muscle A1
Resin adhesive G

Claims (7)

A circular side peripheral portion formed concentrically around the through hole in the vertical direction,
A solid rotating body, comprising a slanted peripheral portion formed of a conical surface or a hemispherical surface, which is curved from the side peripheral portion to the top portion with the lower tip as the top portion,
An anchor body that is configured by a through hole that vertically penetrates along the rotation axis of the rotating body, and is embedded and installed in the vicinity of the base material surface of the base material,
Between the hole end of the through hole and the top of the rotating body, a chamfered portion having upper and lower ends as curved surfaces is formed over the entire circumference of the hole end of the through hole,
For the base material in which the anchor bar is embedded and fixed and the opening that expands around the anchor bar toward the base material surface is formed,
The anchor body is embedded in the opening in a state in which the anchor muscle is inserted in the through hole, and the base material surface of the base material surface in a state of being pressed downward from the structure above the side peripheral portion. It is embedded and installed in the vicinity,
When the anchor body is embedded and installed, when the anchor muscle above the side circumference receives a shearing force, the anchor body is centered on the center of gravity of the anchor body as the center of rotation, and the anchor body has a central cross-sectional view passing through the rotation axis. By tilting so as to rotate in one rotation direction, one side portion of the inclined peripheral portion of the rotating body of the anchor body comes into surface pressure contact with a part of the opening portion facing the one side portion. , Embedded anchor auxiliary material. The implantable anchor according to claim 1 , wherein an outer boundary end of the chamfered portion that contacts the lower end of the inclined peripheral portion forms an edge circle having an edge diameter within a range of 102% to 120% with respect to the anchor muscle diameter of the anchor muscle. Auxiliary material. The solid rotating body is
A flat top surface, which is concentrically formed around the through-hole in the up-down direction and has a circular side peripheral portion as a peripheral edge,
A sloped peripheral portion formed of a conical surface, the curved surface being formed from the side peripheral portion of the top surface to the top portion with the lower tip as the top portion,
The embedded type according to claim 1 or 2, wherein an elevation angle formed between an inclination line of an outer shape connecting the lower end to the upper end of the inclined peripheral portion and an axis line is set in a range of 40 degrees or more and 50 degrees or less. Anchor auxiliary material. The embedded anchor auxiliary material according to claim 1 or 2 , wherein the inclined peripheral portion is a partial sphere having a curvature of a predetermined value or more in a central cross section. A circular side peripheral portion formed concentrically around the through hole in the up-and-down direction,
A downward inclined peripheral portion formed of a conical surface or a hemispherical surface, which is curved from the side peripheral portion to the lower top portion with the lower tip as the apex,
A solid rotating body, comprising a curved surface formed from the side peripheral portion to the upper top portion with the upper tip as the apex, and comprising an upper inclined peripheral portion formed of a conical surface or a hemispherical surface,
It is composed of a through hole that penetrates vertically along the rotation axis of the rotating body,
An anchor body that is permanently embedded and installed at the boundary between the first base material and the second base material,
Between the lower end of the through hole and the lower apex of the rotating body, and between the upper end of the through hole and the upper apex of the rotating body, the upper and lower ends are curved over the entire circumference of the hole end of the through hole. The chamfered part to be formed is formed,
For the first base material in which the anchor bar is embedded and fixed and the opening that expands around the anchor bar toward the surface of the base material is formed,
The anchor body is embedded in the opening in a state in which the anchor muscle is inserted in the through hole, and the anchor body is downwardly sewn from the structure made of the second base material spliced to the upper portion of the side peripheral portion. It is installed embedded over the boundary surface between the first base material and the second base material in the state of receiving the pressing force,
When the anchor body is embedded and installed in the first base material and the second base material, the anchor body rotates about the center of gravity of the anchor body when the anchor muscle above the lateral circumference receives a shearing force. As the center, by tilting to rotate in one rotation direction in the central cross-sectional view passing through the rotation axis,
One side part of the lower inclined peripheral part of the rotating body of the anchor body is in surface pressure contact with a part of the opening of the first base material facing the one side part,
The embedded anchor auxiliary material, wherein the other side portion of the inclined peripheral portion of the anchor body above the rotating body is in surface pressure contact with a part of the opening of the second base material facing the other side portion. Between the hole lower end of the through hole and the lower apex of the rotating body, a chamfered portion having curved upper and lower ends is formed over the entire circumference of the hole end of the through hole,
Between the hole upper end of the through hole and the upper apex of the rotating body, a chamfered portion having upper and lower ends as curved surfaces is formed over the entire circumference of the hole end of the through hole,
The outer boundary edge of each chamfered portion in contact with the lower end of the inclined peripheral portion and the outer boundary edge of each chamfered portion in contact with the upper end of the inclined peripheral portion are both 102% to 120% of the anchor muscle diameter of the anchor muscle. The implantable anchor aid of claim 5, forming an edge circle with a common edge diameter within the range. Between the lower inclined peripheral portion and the upper inclined peripheral portion, a side peripheral portion formed of a circumferential surface is formed concentrically around the through hole in the vertical direction at a predetermined height,
The anchor body, the base material surface of the first base material, the first base material and the second base material of the second base material, so that the lateral peripheral portion across the boundary surface of the base material surface of the second base material. The embedded anchor auxiliary material according to claim 5 or 6, which is embedded and installed at a splicing boundary.

Images