Fixture and fixing method of grid-like reinforcement member

Abstract

To provide a fixture capable of fixing a grid-like reinforcement member by driving a fixing pin at a correct position, and to provide a fixing method of the grid-like reinforcement member.SOLUTION: A fixture 1 which is arranged on a grid-like reinforcement member installed in a grid-like manner on a surface of a structure, and which fixes the grid-like reinforcement member to the structure by driving a fixing pin from above includes: a tabular pressing part 11 for pressing the grid-like reinforcement member; an upper protrusion 12 protruding perpendicularly with respect to the pressing part 11 from the surface on the side where the fixing pin of the pressing part 11 is driven; and a lower protrusion 13 protruding perpendicularly with respect to the pressing part 11 from the surface coming into contact with the grid-like reinforcement member of the pressing part 11. The upper protrusion 12 includes contact parts 122, 122 coming into contact with an injection passage of a driving machine when the driving machine which drives the fixing pin into an upper surface 112 of the pressing part 11 is abutted against the fixture 1 from the upper protrusion 12 side.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a fastener and a method for fastening a grid-like reinforcing member. [Background technology]

[0002] Conventionally, as a method for reinforcing the tensile strength of a skeleton such as concrete, a reinforcing fiber material such as a grid-shaped FRP grid reinforcement material (FRP (Fiber Reinforced Plastics): fiber reinforced plastics) is attached to the skeleton with anchors or the like, and mortar or the like is poured on top of it to integrate it with the skeleton and reinforce it. For example, Patent Document 1 discloses a method in which a synthetic resin net structure is attached to the surface of a concrete skeleton, anchor pins are driven in from above to fix the net structure to the concrete skeleton, and the net structure is covered with a cement-based coating material. Patent Document 2 discloses a method in which reinforcing fiber sheets with fiber arrangement directions perpendicular to each other are placed on both ends of a reinforcing fiber sheet attached to a concrete surface, and the net structure is fixed to the concrete surface with a locking pin while being held down with a washer.

[0003] In all of the reinforcement methods listed above, pins are driven into the surface of the structure from above the reinforcement to fix the reinforcement to the surface of the structure. By using a pin driving method to fix the reinforcement, there is no need to pre-drill pilot holes in the surface of the structure, as with rivets, so there is no need to change the tool to fix the reinforcement. In addition, there is no need to clean or dispose of shavings from the structure when fixing the reinforcement, because there is no need to pre-drill pilot holes in the surface of the structure. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 9-317199 [Patent Document 2] Japanese Patent Application Publication No. 6-193281 Summary of the Invention [Problem to be solved by the invention]

[0005] On the other hand, the above-mentioned method of fixing a reinforcing material by driving in a pin has a problem that the workability is low because the driving tool is operated while holding the fixing device for fixing the reinforcing material such as a washer and the reinforcing material with one hand when driving in the pin. In addition, there is a problem that it is difficult to drive the pin in an accurate position by performing the work while holding the fixing device and the reinforcing material with one hand, and there is a risk that the fixing device and the reinforcing material will slide sideways due to the impact of actually driving the pin, and the pin will be driven in a different position.

[0006] SUMMARY OF THE PRESENT DISCLOSURE An object of the present invention is to provide a fastener and a method for fastening a grid-shaped reinforcing member, which are capable of driving fixing pins into accurate positions to fasten the grid-shaped reinforcing member. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the fixing device of the present invention is a fixing device that is placed on a grid-shaped reinforcing member installed in a grid pattern on the surface of a structure and fixes the grid-shaped reinforcing member to the structure by driving fixing pins from above, and comprises a flat pressing portion that holds the grid-shaped reinforcing member, an upper protrusion that protrudes perpendicular to the pressing portion from the surface of the pressing portion on the side into which the fixing pins are driven, and a lower protrusion that protrudes perpendicular to the pressing portion from the surface of the pressing portion that abuts against the grid-shaped reinforcing member, and the upper protrusion protrudes outward and has an abutment portion that abuts against the injection path of a driving machine that drives the fixing pins into the upper surface of the holding portion when the fixing device is brought into contact with the fixing device from the upper protrusion side.

[0008] With the above configuration, when placing the fixing device at a predetermined position on the structure, there is no need to hold the fixing device with one hand, and the fixing pin can be driven into the fixing device with one hand released. Therefore, the fixing device and the driving machine engaged therewith can be positioned while holding only the grid-shaped reinforcing member with one hand, etc., and the fixing pin driving position can be accurately targeted. In addition, since the pin driving position can be easily determined, the fixing pin driving work can be performed with high efficiency.

[0009] In the fastener according to the present invention, the upper protrusion and the lower protrusion may be disposed at positions that substantially coincide with each other in a plan view.

[0010] With the above configuration, the positions of the upper protrusion and the lower protrusion overlap in a planar view, so that when the driving tool is brought into contact with the fastener, the fastener can be positioned without being tilted relative to the driving direction of the driving tool.

[0011] In the fastener according to the present invention, the lower projection may be formed so as to be crushed when the fastening pin is driven in from the upper projection side.

[0012] With the above-described configuration, the gap between the pressing portion and the surface of the structure is narrowed, so that the fixing device can firmly press the grid-shaped reinforcing member with the pressing portion.

[0013] In the fastener according to the present invention, the lower projection may be formed with a lower slit cut from a tip in a protruding direction toward the pressing portion.

[0014] With the above-described configuration, the lower projection is buckled outward when the fixing pin is driven into the structure, and can be easily crushed between the structure and the pressing portion.

[0015] In the fastener according to the present invention, the upper protrusion may be formed so as to be crushed when the fastening pin is driven into the fastener.

[0016] With the above-mentioned configuration, when the fixing pin is driven into the structure, the upper protrusion is crushed, so that when the fixed grid-shaped reinforcement member is covered with a covering material such as mortar, the upper protrusion does not protrude from the covered area, and the desired cover thickness for the poured portion can be easily ensured.

[0017] In the fastener according to the present invention, the upper projection may be formed with an upper slit cut from a tip in a protruding direction toward the pressing portion.

[0018] With the above-mentioned configuration, the upper protrusions are easily crushed on the upper surface of the pressing part by being buckled outward when the fixing pin is driven into the structure. In addition, since the upper protrusions are easily crushed by the upper slits, it is easier to ensure a desired covering thickness when the fixed grid-like reinforcing member is covered with a covering material.

[0019] The fixture according to the present invention may be integrally formed from a resin material.

[0020] With the above-described configuration, the fixture can be manufactured light-weight and inexpensively.

[0021] In the fastener according to the present invention, the pressing portion may be formed on an outer periphery with a tapered surface that expands in diameter upward from a surface side that abuts against the grid-shaped reinforcing member.

[0022] With the above configuration, after the grid-shaped reinforcing member is fixed on the structure with the fixture secured by the fixing pin, when a material to cover the reinforced portion, such as mortar, is poured on the structure, the lower protrusions are crushed between the fixture and the structure to secure a gap, making it easier for the covering material to get in between the structure and the fixture. This increases the contact area between the structure and the covering material, and improves the adhesive strength between the structure and the covering material. Furthermore, when the fastener is made of a resin material, the adhesive strength is generally inferior to that of conventional fasteners made of known metals such as stainless steel, etc. Therefore, by increasing the contact area between the structure and the coating material by using a tapered surface, it is possible to ensure adhesive strength equivalent to that of conventional fasteners made of metal.

[0023] In addition, in the fastener of the present invention, the upper protrusion may be located around the lower protrusion in a planar view and may be provided with a second upper protrusion that protrudes perpendicularly to the pressing portion from the surface on the side into which the fixing pin is driven.

[0024] With the above configuration, even if the injection path of the driving tool is larger than the planar cross section of the upper protrusion, the fastener and the driving tool can be engaged by abutting the upper second protrusion and the injection path.

[0025] In addition, in the fastener of the present invention, the upper second protrusion is arranged to protrude radially outward from the peripheral edge of the holding portion, and the lower surface of the upper second protrusion may be located higher than the lower surface of the holding portion.

[0026] With the above configuration, after the grid-like reinforcing member is fixed on the structure with the fixture secured by the fixing pin, when a material such as mortar is poured onto the structure to cover the reinforced portion, the covering material such as mortar smoothly flows under the fixture and is less likely to form voids that are not filled with the covering material because a space is formed between the underside of the upper second protrusion and the underside of the pressing portion. This increases the contact area between the structure and the covering material, improving the adhesive strength between the structure and the covering material.

[0027] In addition, in the fixing device of the present invention, the upper second protrusions may be provided at intervals along the circumferential direction of the holding portion, and lower second protrusions may be provided between adjacent upper second protrusions so as to protrude radially outward from the periphery of the holding portion.

[0028] With the above configuration, after the grid-like reinforcing member is fixed on the structure with the fixture secured by the fixing pin, when a material such as mortar is poured onto the structure to cover the reinforced portion, a space is formed between the underside of the upper second protrusion and the underside of the pressing portion, so that the covering material such as mortar smoothly flows under the fixture and the lower second protrusion allows the covering material to flow even more smoothly under the upper second protrusion, resulting in less formation of voids that are not filled with the covering material. This increases the contact area between the structure and the covering material, improving the adhesive strength between the structure and the covering material.

[0029] Furthermore, in the fixing device of the present invention, a peripheral portion is provided around the entire circumference of the holding portion, the peripheral portion is located around the lower protrusion in a planar view, and the peripheral portion may include a raised portion protruding perpendicularly to the holding portion from the surface on the side into which the fixing pin is driven, a top portion of the raised portion with a high height and a bottom portion of the raised portion with a low height, which are formed alternately and successively in the circumferential direction on an upper surface of the peripheral portion, a recessed portion formed on the upper surface of the holding portion corresponding to the top portion, and an opening formed in the raised portion opposite the recessed portion.

[0030] With the above configuration, after the grid-shaped reinforcing member is fixed on the structure with the fixture secured by the fixing pin, when a material such as mortar is poured onto the structure to cover the reinforced portion, the covering material can be smoothly introduced from the recess formed on the upper surface of the pressing portion through the opening to below the peripheral portion, making it difficult for voids to be formed that are not filled with the covering material. This increases the contact area between the structure and the covering material, improving the adhesive strength between the structure and the covering material.

[0031] In order to achieve the above-mentioned object, the method of fixing a grid-like reinforcement member of the present invention is a method of fixing a grid-like reinforcement member using the above-mentioned fixing device, in which the driving tool is abutted against the fixing device from the upper protrusion side to engage the driving tool and the fixing device, the tip face of the lower protrusion is abutted against the surface of the structure so that it does not overlap the grid-like reinforcement member, the driving tool is driven to drive the fixing pin into the structure, and at least a part of the holding portion is pressed against the grid-like reinforcement member to fix the grid-like reinforcement member.

[0032] With the above-mentioned configuration, by placing the fixing device on the grid-shaped reinforcement member with the lower protrusion abutting the surface of the structure, the position of the grid-shaped reinforcement member can be easily determined without shifting, and the insertion position of the fixing pin can be easily determined. In addition, by arranging the lower protrusion so that the tip surface of the lower protrusion does not overlap with the grid-shaped reinforcing member and butting the lower protrusion against the surface of the structure, a wall formed by the protrusion is always positioned between the fixing pin and the grid-shaped reinforcing member, so that the fixing pin can be driven into the structure without coming into contact with the grid-shaped reinforcing member. Also, because the fixing pin does not come into contact with the grid-shaped reinforcing member, damage to the grid-shaped reinforcing member due to the driving of the fixing pin can be prevented. In addition, because the upper and lower protrusions are provided perpendicular to the holding portion, the fixing pin ejected from the ejection path is actually driven perpendicularly into the structure, which suppresses tilting of the fixing pin when it is driven in, prevents chipping of the surface of the structure, and improves the success rate of the fixing pin being actually driven in. As described above, the fixing device can be fixed to the structure by simply driving the fixing pin into the correct position, and the pressing portion of the fixing device presses the grid-shaped reinforcing member against the structure, thereby firmly fixing the grid-shaped reinforcing member.

[0033] In the method for fixing a grid-shaped reinforcing member according to the present invention, the lower protrusion may be crushed between the pressing portion and the structure when the fixing pin is driven into the structure.

[0034] With the above-described configuration, the gap between the pressing portion and the surface of the structure is narrowed, so that the pressing portion can firmly press the grid-shaped reinforcing member.

[0035] In addition, in the method for fixing a grid-shaped reinforcing member according to the present invention, when the fixing pin is driven into the structure, the upper protrusion may be crushed on the surface of the pressing portion on the side into which the fixing pin is driven.

[0036] With the above configuration, when pouring material such as mortar to cover the reinforced area after installing the grid-shaped reinforcing member, the upper protrusion can easily ensure the desired cover thickness for the poured portion without protruding from the poured portion of the covering material. Effect of the Invention

[0037] According to the present invention, it is possible to realize a fixture and a method for fixing a grid-shaped reinforcing member, which are capable of driving fixing pins into accurate positions to fix the grid-shaped reinforcing member. [Brief description of the drawings]

[0038] [Figure 1] FIG. 1 is a perspective view illustrating an example of a fixture according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a plan view showing the installation position of a fixing device according to an embodiment of the present invention. [Diagram 3] FIG. 2 is a vertical cross-sectional view showing a state before a fixing pin is driven into the fixing device according to the embodiment of the present invention. [Figure 4] 1 is a vertical cross-sectional view showing a state after a fixing pin has been driven into the fixing device according to an embodiment of the present invention. FIG. [Diagram 5] FIG. 13 is a perspective view showing a modified example of a fastener according to an embodiment of the present invention, illustrating a modified example of an upper protrusion with the illustration of a lower protrusion omitted. [Figure 6] FIG. 13 is a perspective view showing a modified example of a fixing device according to an embodiment of the present invention, illustrating a modified example of a lower protrusion with the illustration of an upper protrusion omitted. [Figure 7]1A to 1C are diagrams showing another aspect (1) of a fixture according to an embodiment of the present invention, where (a) is a plan view, (b) is a perspective view from above, and (c) is a perspective view from below. [Figure 8] 13A to 13C are diagrams showing another aspect (2) of a fixture according to an embodiment of the present invention, in which (a) is a plan view, (b) is a perspective view from above, and (c) is a perspective view from below. [Figure 9] 11A to 11C are diagrams showing another aspect (3) of a fixture according to an embodiment of the present invention, where (a) is a plan view, (b) is a perspective view from above, and (c) is a perspective view from below. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0039] Hereinafter, a fastener and a method for fastening a grid-shaped reinforcing member according to an embodiment of the present invention will be described with reference to FIGS.

[0040] As shown in Fig. 1, the fastener 1 includes a pressing portion 11, an upper first protrusion 12, a lower protrusion 13, and an upper second protrusion 14. The fastener 1 is integrally molded from a resin material. As shown in Fig. 2, the fastener 1 is disposed on each intersection 31 of a grid-like reinforcing member 3 (hereinafter referred to as "reinforcing member 3") that has a lattice shape in a plan view and is installed on the surface of a structure 2. The structure 2 is, for example, a concrete skeleton. The material of the reinforcing member 3 can be, for example, a known FRP (fiber reinforced plastic).

[0041] The pressing portion 11 is a flat plate that is circular in plan view, and a flat surface 111 on one side abuts against the reinforcing member 3. The flat surface 111 on one side of the pressing portion 11 serves as a lower surface 111, and the flat surface on the other side serves as an upper surface 112. The pressing portion 11 is formed on its outer periphery with a tapered surface 113 that expands in diameter upward from an end 111a on the lower surface 111 side toward an end 112a on the upper surface 112 side.

[0042] The upper first protrusion 12 is formed to protrude perpendicularly to the pressing portion 11 from the center of the upper surface 112 of the pressing portion 11. The upper first protrusion 12 has a cylindrical portion 121 and a pair of abutment portions 122, 122 continuous with the cylindrical portion 121. The cylindrical portion 121 has a first insertion hole 123 formed therein extending in the same direction as the protruding direction. The pair of abutment portions 122, 122 are ribs formed to protrude outward from both ends 121a, 121b of the cylindrical portion 121 in one direction when viewed from above (hereinafter referred to as "ribs 122, 122").

[0043] The upper first projection 12 has a pair of upper slits 125, 125 cut toward the pressing portion 11 from both ends 121c, 121d in the other direction in plan view that are perpendicular to both ends 121a, 121b in one direction in plan view at the tip surface 124 of the cylindrical portion 121.

[0044] The cylindrical portion 121 and the pair of ribs 122, 122 have substantially the same height in the protruding direction. The pair of ribs 122, 122 are formed in a rectangular parallelepiped shape.

[0045] The pair of upper slits 125, 125 are cuts formed parallel to the protruding direction of the upper first projection 12. The pair of upper slits 125, 125 are formed to have a depth that is approximately the same from the tip surface 124 to the middle part of the upper first projection 12 in the protruding direction.

[0046] The tip surface 124 of the upper first protrusion 12 in the protruding direction corresponds to the tip surfaces of the cylindrical portion 121 and the pair of ribs 122, 122 in the protruding direction, and is formed in a plane parallel to the upper surface 112 of the pressing portion 11 except for the openings formed by the pair of upper slits 125, 125.

[0047] The lower projection 13 is formed to project perpendicularly to the pressing portion 11 from the center of the lower surface 111 of the pressing portion 11. The lower projection 13 is formed in a cylindrical shape, and a second insertion hole 131 is formed inside the lower projection 13 extending in the same direction as the protruding direction. As shown in FIG. 3, the length H1 of the lower projection 13 in the protruding direction is formed to be equal to or greater than the thickness of the reinforcing member. The lower projection 13 is formed with a pair of lower slits 133, 133 cut in a V-shaped direction expanding in diameter from a connection portion 15 between the lower projection 13 and the pressing portion 11 toward a tip surface 132 of the lower projection 13.

[0048] A tip surface 132 of the lower projection 13 in the protruding direction is formed as a flat surface parallel to the lower surface 111 of the pressing portion 11 except for the openings formed by the pair of lower slits 133, 133.

[0049] The upper first protrusion 12 and the lower protrusion 13 are disposed at positions overlapping in a plan view. The pressing portion 11 has a communication hole 114 formed in the center, the communication hole 114 having a shape that generally matches the shape of the first insertion hole 123 and the second insertion hole 131 in a plan view. The communication hole 114, the first insertion hole 123, and the second insertion hole 131 have cross-sectional shapes that generally match and communicate with each other, forming a driving hole 4 that communicates in one direction from the first insertion hole 123 to the second insertion hole 131.

[0050] A plurality of upper second protrusions 14 are provided around the upper first protrusion 12, and are formed to protrude perpendicularly from the upper surface 112 to the pressing portion 11. The plurality of upper second protrusions 14 are divided into a plurality of parts and arranged on a circular locus. The protruding height of the plurality of upper second protrusions 14 is lower than the protruding height of the first protrusion 12.

[0051] The method of joining the pressing portion 11, the upper first protrusion 12, the lower protrusion 13, and the multiple upper second protrusions 14 of the fixing device 1 is not limited, and for example, the fixing device 1 may be formed as a single unit or may be formed by joining each part with a known adhesive or the like.

[0052] A method for fixing a reinforcing member 3 using the fixing device 1 will be described with reference to the drawings. As shown in Fig. 3, the fixing device 1 is fixed to the surface of the structure 2 by inserting a fixing pin 51 ejected from a driving machine 5 into a driving hole 4 and driving the fixing pin 51 into the structure 2, sandwiching the reinforcing member 3 therebetween, thereby fixing the reinforcing member 3 to the surface of the structure 2.

[0053] The driving machine 5 is a known pneumatic pin nail driver that drives the fixing pin 51 with compressed air pressure-fed from an electrically connected air compressor. The fixing pin 51 is a known metal anchor pin. The inner peripheral surface 52a of the ejection passage 52 that ejects the fixing pin 51 and the end surfaces 122a, 122a of the pair of ribs 122, 122 come into contact when the tip 52b of the ejection passage 52 of the driving machine 5 hits the upper surface 112 of the pressing part 11. The driving machine 5 is not limited to the above-mentioned pneumatic pin nail driver, and may be, for example, a pin driver that is driven by the combustion pressure of gas, or a rechargeable nail driver that is powered by a battery.

[0054] The method of fixing the reinforcing member 3 is to first insert the upper first protrusion 12 of the fastener 1 into the injection path 52 of the driving machine 5, and abut the tip 52b of the injection path 52 of the driving machine 5 against the upper surface 112 of the pressing part 11. With this configuration, the fastener 1 and the driving machine 5 are locked together by friction at the abutting portions between the inner circumferential surface 52a of the injection path 52 and the end faces 122a, 122a of the ribs 122, 122. The abutting portions 122, 122 are not limited to the ribs of this embodiment as long as they have a shape that abuts against the inner circumferential surface 52a of the driving machine 5.

[0055] With the fastener 1 engaged with the driving machine 5, the fastener 1 is positioned near the intersection 31, which is the fixing location of the reinforcing member 3, with the tip surface 132 of the lower protrusion 13 abutting against the surface of the structure 2. The fastener 1 is positioned so that the outer surface of the lower protrusion 13 is close to the orthogonal inner sides 3a, 3a of the reinforcing member 3. Therefore, the driving hole 4 is positioned at a position that does not overlap with the reinforcing members 3, 3 in a plan view, and the pressing portion 11 is positioned at a position that overlaps with the intersection 31 of the reinforcing members 3, 3 in a plan view. The orientation of the fastener 1 in a plan view is not limited.

[0056] 4, the fastener 1 is placed in the above position, and the driving machine 5 is driven with a force applied to bring the lower protrusion 13 into contact with the surface of the structure 2, and the fastener 1 is inserted into the driving hole 4 and driven into the structure 2. The fastener 1 is driven into the structure 2 with the tip surface 132 in contact with the surface of the structure 2, and is therefore driven perpendicularly into the structure 2.

[0057] When the fixing pin 51 is driven into the structure 2 by the above method, the upper first protrusion 12 is crushed on the inner upper surface 112 of the multiple upper second protrusions 14. The multiple upper second protrusions 14 are not crushed by the driving of the fixing pin 51. The upper first protrusion 12 is crushed so as not to be exposed from the peripheral portion of the pressing portion 11 in a plan view. In addition, the crushed portion of the upper first protrusion 12 fills the space between the inner peripheral surface of the first insertion hole 123 and the fixing pin 51.

[0058] Similarly, when the fixing pin 51 is driven into the structure 2, the lower protrusion 13 is crushed between the holding portion 11 and the structure 2. The lower protrusion 13 is crushed so as not to be exposed from the peripheral edge of the holding portion 11 in a plan view. The lower protrusion 13 is crushed to a thickness that is approximately equal to the thickness T1 of the intersection portion 31. The crushed portion of the lower protrusion 13 fills the space between the inner peripheral surface of the second insertion hole 131 and the fixing pin 51.

[0059] The fixing pin 51 is driven into the structure 2 and the upper first protrusion 12 and the lower protrusion 13 are crushed, completing the driving of the fixing pin 51 and causing the pressing portion 11 of the fixing device 1 to be pressed against the reinforcing member 3, fixing the reinforcing member 3 to the structure 2 at the intersection 31. The fixing pin 51 is driven perpendicularly into the structure 2, avoiding the FRP grid reinforcing material 3, and is therefore driven into the structure 2 without coming into contact with the reinforcing member 3. The pressing portion 11 functions as a washer that holds the reinforcing member 3.

[0060] The above-mentioned fixing operation of the fasteners 1 by driving in the fixing pins 51 is carried out at each intersection 31 of the reinforcing member 3, and the reinforcing member 3 is fixed to the structure 2 by the multiple fasteners 1.

[0061] After the reinforcing member 3 is fixed to the structure 2 with a plurality of fasteners 1, a known covering material such as mortar is poured onto the fixed reinforcing member 3 to cover the FRP grid reinforcement material 3 together with the fasteners 1, thereby integrating the reinforcing member 3 with the structure 2. With the above method, the strength of the structure 2 in the tensile direction is reinforced by the reinforcing member 3. When the reinforcing member 3 is installed on the underside of the structure 2, it may be integrated with the structure 2 by spraying a covering material such as mortar onto it.

[0062] Length H1 of lower projection 13 in the protruding direction may be formed to correspond to thickness T1 of intersection 31 and to be greater than thickness T1 of intersection 31. For example, thickness T1 of intersection 31 is about 4 mm, so length H1 of lower projection 13 in the protruding direction is formed in the range of 4 mm to 6.5 mm. Also, for example, when fastener 1 is installed on integrally molded reinforcing member 3, reinforcing member 3 is formed to have a thickness of about 2 mm, and length H1 of lower projection 13 in the protruding direction is formed in the range of 2 mm to 6.5 mm.

[0063] The length of upper first protrusion 12 in the protruding direction may be any length that has a holding force capable of engaging fastener 1 and driving machine 5 when tip 52b of injection path 52 of driving machine 5 abuts against upper surface 112 of pressing part 11, that ensures the perpendicularity of fixing pin 51 when fixing pin 51 is inserted, and that allows fixing pin 51 to be crushed when it is driven in. The length of upper first protrusion 12 in the protruding direction is, for example, about 7.5 mm.

[0064] In the above state, the fixing pin 51 is similarly inserted through the driving hole 4 and driven into the structure 2, the fastener 1 is pressed onto the reinforcing member 3, the lower protrusion 13 is crushed, and the reinforcing member 3 can be fixed to the structure 2.

[0065] Next, the functions and effects of the fastener and the method for fastening a grid-shaped reinforcing member according to the embodiment of the present invention described above will be described with reference to the drawings.

[0066] 3, the fastener 1 and the driving machine 5 are locked together when the tip 52b of the driving machine 5 abuts against the upper surface 112 of the pressing part 11, causing the inner circumferential surface 52a of the injection path 52 to come into contact with the end surfaces 122a, 122a of the pair of ribs 122, 122. In addition, when the fastener 1 and the driving machine 5 are locked together, the driving hole 4, in which the communication hole 114, the first insertion hole 123, and the second insertion hole 131 are in communication with the injection path 52, is in communication with each other.

[0067] With the above configuration, when placing the fixing device 1 at a predetermined position on the structure 2, there is no need to hold the fixing device 1 with one hand, and the fixing pin 51 can be driven into the structure 2 with the fixing device 1 in a state where the hand is released. Therefore, the positioning of the driving machine 5 engaged with the fixing device 1 can be performed while holding down only the reinforcing member 3 with one hand, etc., and the driving position of the fixing pin 51 into the structure 2 can be accurately aimed. In addition, since the driving position of the fixing pin 51 into the structure 2 can be easily determined, the driving operation of the fixing pin 51 can be performed with high efficiency. Furthermore, since the driving hole 4 and the injection path 52 are in communication with each other, the fixing pin 51 can be reliably inserted through the driving hole 4 and reliably driven into the structure 2.

[0068] Furthermore, the inner circumferential surface 52a of the injection path 52 abuts against and engages with the end surfaces 122a, 122a of the pair of ribs 122, 122, thereby reducing the contact area between the upper first protrusion 12 and the inner circumferential surface 52a of the injection path 52 and reducing the frictional resistance of the abutting portion of the upper first protrusion 12 with the injection path 52. Therefore, the upper first protrusion 12 can be easily attached within the injection path 52 while ensuring a holding force that can integrate the fastener 1 and the driving tool 5. In addition, by reducing the contact area between the upper first protrusion 12 and the inner surface 52a of the injection path 52 by the pair of ribs 122, 122, a gap 6 can be formed between the upper first protrusion 12 and the inner surface 52a of the injection path 52, and a configuration can be achieved in which the upper first protrusion 12 is reliably crushed within the gap 6 when the fixing pin 51 is driven in.

[0069] The length H1 of the lower projection 13 in the protruding direction is formed to be greater than the thickness T1 of the intersection 31. As shown in Fig. 2, when the fixing pin 51 is driven in, the lower projection 13 of the fixing device 1 is positioned so as to be close to the orthogonal inner sides 3a, 3a of the reinforcing member 3 with the tip surface 132 abutting against the structure 2. In addition, the driving hole 4 is positioned so as not to overlap with the reinforcing member 3 in a plan view.

[0070] With the above-mentioned configuration, by bringing the lower protrusion 13 close to the perpendicular inner sides 3a, 3a of the reinforcing member 3 and butting it against the structure 2, the position of the fixing pin 51 can be easily determined without the reinforcing member 3 being misaligned.

[0071] Furthermore, with the above configuration, the fixing device 1 allows the tip surface 132 of the lower protrusion 13 to abut against the structure 2 without the driving hole 4 overlapping with the reinforcing member 3. With the above configuration, when the fixing pin 51 is driven, a wall formed by each protrusion is always positioned between the fixing pin 51 and the reinforcing member 3, so that the fixing pin 51 is reliably inserted into the driving hole 4. Therefore, the fixing pin 51 can be driven without contacting the reinforcing member 3. Furthermore, since the fixing pin 51 does not contact the reinforcing member 3, damage to the reinforcing member 3 due to the driving of the fixing pin 51 can be prevented.

[0072] 3, the upper first projection 12 is formed to project perpendicularly from the holding portion 11. Furthermore, the fastener 1 and the driving machine 5 are arranged such that the upper first projection 12 enters the injection path 52 and the tip 52b of the driving machine 5 abuts against the upper surface 112 of the holding portion 11, whereby the inner circumferential surface 52a of the injection path 52 and the pair of ribs 122, 122 are engaged, and the injection path 52 is communicated with the driving hole 4 which is in communication with the injection path 52 in one direction. The fastener 1 engaged with the driving machine 5 is placed on the structure 2 with the planar tip surface 132 of the lower projection 13 abutting against the structure 2.

[0073] With the above-described configuration, the fastener 1 and the driving machine 5 can be engaged with each other without the driving machine 5 being tilted relative to the fastener 1 when the driving machine 5 is butted against the fastener 1. Furthermore, the driving hole 4 is disposed perpendicular to the structure 2, and the driving hole 4 and the injection path 52 communicate in one direction in the forming direction of the driving hole 4, so that the fixing pin 51 that is injected from the injection path 52 and passes through the driving hole 4 is actually driven perpendicularly into the structure 2. Therefore, chipping of the surface of the structure 2 when the fixing pin 51 is driven can be prevented, and the desired success rate of actually driving the fixing pin 51 can be ensured.

[0074] Furthermore, in the fixing device 1, the upper first protrusion 12 and the lower protrusion 13 protrude perpendicularly to the holding portion 11 and are arranged in positions where they overlap in a plan view, so that the fixing pin 51 can be driven in while being held perpendicularly to the holding portion 11. This prevents the fixing pin 51 from tilting when being driven in, improving the success rate of actually driving the fixing pin 51. Furthermore, because the upper first protrusion 12 and the lower protrusion 13 are arranged in positions where they overlap in a plan view, when the driving tool 5 is butted against the fixing device 1, the fixing device 1 can be locked without being tilted with respect to the driving direction of the driving tool 5.

[0075] Since the fastener 1 is integrally molded from a resin material, the fastener 1 can be formed light-weight and inexpensively.

[0076] When the fixing pin 51 passes through the driving hole 4 and is driven into the structure 2, the upper first protrusion 12 buckles outward and is crushed by the pair of upper slits 125, 125. Similarly, when the fixing pin 51 is driven into the structure 2, the lower protrusion 13 buckles outward and is crushed by the pair of V-shaped lower slits 133, 133.

[0077] With the above configuration, when the fixing pin 51 is driven in, the upper first protrusion 12 and the lower protrusion 13 are each buckled outward by the pair of slits and can be easily crushed. By crushing the upper first protrusion 12, when the fixed reinforcing member 1 is covered with a covering material such as mortar, the upper first protrusion 12 does not protrude from the covered portion, and a desired cover thickness for the poured portion can be easily ensured. By crushing the lower protrusion 13, the gap between the holding portion 11 and the surface of the structure 2 is narrowed, so that the fixing device 1 can firmly hold the reinforcing member 1 with the holding portion 11. In addition, the upper first protrusion 12 is easily crushed by the pair of upper slits 125, 125, and a desired cover thickness can be easily ensured without protruding from the covered portion when the covering material such as mortar is poured.

[0078] The conditions such as the number and depth of the pair of upper slits 125, 125 and lower slits 133, 133 are not limited as long as the above-mentioned effects can be achieved, and may be set arbitrarily.

[0079] Furthermore, the pair of V-shaped lower slits 133, 133 cause the lower protrusions 13 to buckle outward when the fixing pin 51 is driven in, and the lower protrusions 13 are crushed approximately uniformly radially in a plan view. Therefore, due to the above-described manner in which the second protrusions 13 are crushed, the second protrusions 13 do not tilt relative to the structure 2, and the fixing device 1 can be installed without tilting relative to the protruding direction of each protrusion.

[0080] The pressing portion 11 has a tapered surface 113 formed on the outer periphery thereof, the tapered surface 113 expanding in diameter upward from an end portion 111a on the lower surface 111 side to an end portion 112a on the upper surface 112 side.

[0081] With the above configuration, after the reinforcing member 3 is fixed onto the structure 2 by the fixture 1 fixed by the fixing pin 51, when a covering material such as mortar is poured onto the structure 2, the mortar easily finds its way into the gap 7 formed between the lower surface 111 of the fixture 1 and the surface of the structure 2. This increases the contact area between the structure 2, which is a concrete skeleton, and the poured covering material, thereby improving the adhesive strength between the structure 2 and the covering material. Furthermore, the resin material from which fastener 1 is made has inferior adhesive strength compared to known metallic materials such as stainless steel that are generally used in conventional fasteners. Therefore, by increasing the contact area between structure 2 and the covering material by using tapered surface 113, it is possible to ensure adhesive strength equivalent to that of conventional metallic fasteners.

[0082] When the lower protrusion 13 is crushed by driving the fixing pin 51 into the structure 2 and the lower protrusion 13 is positioned between the structure 2 and the fixed holding portion 11, the length of the lower protrusion 13 in the protruding direction approximately coincides with the thickness T1 of the intersection portion 31.

[0083] With the above-mentioned configuration, the pressing portion 11 of the fixing device 1 abuts against the reinforcing member 3 without any gaps, and therefore the reinforcing member 3 can be firmly pressed down. Furthermore, since there is no difference in height between the crushed lower protrusion 13 and the reinforcing member 3, the fastener 1 can be fixed to the structure 2 without the pressing portion 11 being excessively deformed due to the difference in height with the thickness T1 of the intersection portion 31.

[0084] Furthermore, by providing the multiple upper second protrusions 14, in cases where the cross-sectional shape of the tip of the driving tool 5 is even larger or where the inner peripheral surface 52b of the injection path 52 is not engaged with the ribs 122, 122, the outer peripheral surface 52c of the driving tool 5 is brought into contact with the inner peripheral surface 14a of the upper second protrusions 14, and the fastener 1 is held in place by friction between the outer peripheral surface 52c and the inner peripheral surface 14a. Furthermore, even when the fixing pin 51 is driven in under the above-mentioned condition, the multiple upper second protrusions 14 are not crushed. With the above configuration, even if the driving machine 5 is large or the diameter of the upper first protrusion 12 is greater than the diameter of the injection path 52 and the inner surface 52b of the injection path 52 does not engage with the ribs 122, 122, the fastener 1 and the driving machine 5 can be engaged via the multiple upper second protrusions 14, and the fixing pin 51 can be driven into the specified position.

[0085] 7 to 9 show modified examples of the fixing device.

[0086] 7 includes a pressing portion 211, an upper first protrusion 212, a lower protrusion 213, and an upper second protrusion 214. The fixing device 201 is integrally molded from a resin material.

[0087] The pressing portion 211 is a flat plate that is circular in plan view, and a lower surface 211a abuts against the reinforcing member 3. An upper first protrusion 212 and an upper second protrusion 214 are provided on an upper surface 211b of the pressing portion 211. A lower protrusion 213 is provided on a lower surface 211a of the pressing portion 211.

[0088] Upper first protrusion 212 is formed to protrude perpendicularly to pressing portion 211 from the center of upper surface 211b of pressing portion 211. The shape of upper first protrusion 212 is substantially the same as that of upper first protrusion 12 described above, and therefore description thereof will be omitted.

[0089] The lower projection 213 is formed to project perpendicularly to the pressing portion 211 from the center of the lower surface 211a of the pressing portion 211. The lower projection 213 is formed in a cylindrical shape, and a second insertion hole 231 is formed therein extending in the same direction as the projecting direction. The length of the lower projection 213 in the projecting direction is formed to be greater than the thickness T1 of the intersection portion 31. The lower projection 213 is formed with a pair of lower slits 232, 232 that are cut from the tip surface 213a of the lower projection 213 toward the pressing portion 211.

[0090] A tip surface 213a of the lower projection 213 in the protruding direction is formed as a flat surface parallel to the lower surface 211a of the pressing portion 211 except for the openings formed by the pair of lower slits 232, 232.

[0091] The upper first protrusion 212 and the lower protrusion 213 are disposed at positions overlapping in a plan view. The pressing portion 211 has a communication hole 114 formed in the center, the communication hole 114 having a shape that generally matches the shape of the first insertion hole 123 and the second insertion hole 231 in a plan view. The communication hole 114, the first insertion hole 123, and the second insertion hole 231 have cross-sectional shapes that generally match and communicate with each other, forming a driving hole 4 that communicates in one direction from the first insertion hole 123 to the second insertion hole 231.

[0092] A plurality of upper second protrusions 214 are provided around the upper first protrusion 212, and have rising portions 241 that protrude from the upper surface 211b in a direction perpendicular to the pressing portion 211. The plurality of upper second protrusions 214 are divided into a plurality of portions and arranged on a circular locus. The protruding height of the plurality of upper second protrusions 214 is lower than the protruding height of the upper first protrusion 212.

[0093] In the fixing device 201, the bottom surface (lower surface) of the upper second protrusion 214 protruding outward from the pressing portion 211 is formed at a position higher than the upper surface 211b of the pressing portion 211, but it is sufficient that a space into which a coating material such as mortar enters is formed below the upper second protrusion 214 protruding outward from the outer circumferential side of the pressing portion 211. In the fixing device 201, the upper second protrusion 214 includes a horizontal portion 242 extending horizontally from the upper end of the rising portion 241 and radially outward from the pressing portion 211, and a curved portion 243 extending from a radially outer end 242a of the horizontal portion 242 toward the lower surface 211a of the pressing portion 211 on the lower surface side of the upper second protrusion 214. The upper second protrusion 214 is formed so as to protrude radially outward from the periphery of the pressing portion 211. The curved portion 243 is curved in a direction in which the thickness of the upper second protrusion 214 increases from the radial outer end portion 242a of the horizontal portion 242 toward the lower surface 211a of the pressing portion 211. In other words, the curved portion 243 is curved so as to be convex upward when viewed from the lower surface side of the fixing device 201.

[0094] In addition, the method of joining the pressing portion 211, the upper first protrusion 212, the lower protrusion 213, and the multiple upper second protrusions 214 of the fixing device 201 is not limited, and for example, the fixing device 201 may be formed as a single unit, or the fixing device 201 may be formed by joining each part with a known adhesive or the like.

[0095] By configuring the fixture 201 as described above, it is possible to obtain substantially the same effects as the fixture 1 described above. In particular, when a covering material such as mortar is poured onto the structure 2 after the reinforcing member 3 is fixed onto the structure 2 by the fixture 201 fixed by the fixing pin 51, the mortar tends to get into the gap 7 formed between the lower surface 211a of the fixture 201 and the surface of the structure 2. This increases the contact area between the structure 2, which is a concrete skeleton, and the poured covering material, thereby improving the adhesive strength between the structure 2 and the covering material.

[0096] In addition, even if a force that would peel off the covering material covering the entire washer acts, the covering material that has entered the space and the lower surface of the upper second protrusion 214 interfere with each other, preventing the covering material from peeling off. Therefore, although a force that deforms the upper second protrusion 214 may act due to mortar or the like that has wrapped around the lower side of the upper second protrusion 214, the curved portion 243 formed between the upper second protrusion 214 and the pressing portion 211 exerts an effect of suppressing the deformation. Note that the upper second protrusion 214 does not necessarily have to be divided into a plurality of parts, but since a gap formed in the side portion of the upper second protrusion 214 makes it easier for the covering material such as mortar to penetrate into the space below, it is preferable that the upper second protrusion 214 is formed by separating it into about 3 to 10 parts. Furthermore, the pressing portion 211 has a taper formed on the outer periphery such that the diameter of the lower surface is smaller than the upper surface of the pressing portion 211 in the portion where the upper second protrusion 214 is not formed. In fastener 201, curved portion 243 on the lower surface of upper second protrusion 214 and the tapered side surface of pressing portion 211 are formed as an integral curved surface. As a result, even in areas where upper second protrusion 214 is not present, an anchor effect can be expected due to the covering material that has wrapped around to the underside.

[0097] 8 includes a pressing portion 311, an upper first protrusion 312, a lower first protrusion 313, an upper second protrusion 314, and a lower second protrusion 315. The fixing device 301 is integrally molded from a resin material.

[0098] The pressing portion 311 is a flat plate that is circular in plan view, and a lower surface 311a abuts against the reinforcing member 3. An upper first protrusion 312 and an upper second protrusion 314 are provided on an upper surface 311b of the pressing portion 311. A lower first protrusion 313 and a lower second protrusion 315 are provided on a lower surface 311a of the pressing portion 311.

[0099] Upper first protrusion 312 is formed to protrude perpendicularly to pressing portion 311 from the center of upper surface 311b of pressing portion 311. The shape of upper first protrusion 312 is substantially the same as that of upper first protrusion 12 described above, and therefore description thereof will be omitted.

[0100] The lower first protrusion 313 is formed to protrude perpendicularly to the pressing portion 311 from the center of the lower surface 311a of the pressing portion 311. The lower first protrusion 313 is formed in a cylindrical shape, and a second insertion hole 331 is formed therein extending in the same direction as the protruding direction. The length of the lower first protrusion 313 in the protruding direction is formed to be greater than the thickness T1 of the intersection portion 31. The lower first protrusion 313 is formed with a pair of lower slits 332, 332 that are cut from a tip surface 313a of the lower first protrusion 313 toward the pressing portion 311.

[0101] A tip surface 313a of the lower first projection 313 in the protruding direction is formed as a flat surface parallel to the lower surface 311a of the pressing portion 311 except for the openings formed by the pair of lower slits 332, 332.

[0102] The upper first protrusion 312 and the lower first protrusion 313 are disposed at positions overlapping in a plan view. The pressing portion 311 has a communication hole 114 formed in the center thereof, the communication hole 114 having a shape generally corresponding to the shape of the first insertion hole 123 and the second insertion hole 331 in a plan view. The communication hole 114, the first insertion hole 123, and the second insertion hole 331 have cross-sectional shapes generally corresponding to each other and communicate with each other, forming a driving hole 4 that communicates in one direction from the first insertion hole 123 to the second insertion hole 331.

[0103] A plurality of upper second protrusions 314 are provided around upper first protrusion 312, and have rising portions 341 protruding perpendicularly from upper surface 311b to pressing portion 311. The plurality of upper second protrusions 314 are divided into a plurality of portions and arranged on a circular locus. The protruding height of the plurality of upper second protrusions 314 is lower than the protruding height of upper first protrusion 312.

[0104] The upper second projection 314 has a horizontal portion 342 extending horizontally from the upper end of the rising portion 341 and radially outward from the pressing portion 311, forming a space below into which a coating material such as mortar can flow. The upper second projection 314 has a curved portion 343 extending from a radially outer end 342a of the horizontal portion 342 toward the lower surface 311a of the pressing portion 311. The curved portion 343 is curved in a direction in which the thickness of the upper second projection 314 increases from the radially outer end 342a of the horizontal portion 342 toward the lower surface 311a of the pressing portion 311.

[0105] Note that curved portion 343 may be omitted if a space is formed below upper second protrusion 314. As long as the covering material can wrap around, there are no particular restrictions on the size of the lower space (thickness of upper second protrusion 314). However, the thickness must be sufficient to ensure the strength required for upper second protrusion 314 not to deform when a force is applied to peel off the covering material.

[0106] The lower second protrusions 315 are provided between the adjacent upper second protrusions 314, 314 in a plan view. The lower second protrusions 315 are provided so as to extend from the side surface of the pressing portion 311 to the radially outer side of the pressing portion 311. The lower second protrusions 315 are formed with a protruding length shorter than the radial protruding length of the upper second protrusions 314. The lower second protrusions 315 have a bottom portion 351 formed flush with the lower surface 311a of the pressing portion 311, and an inclined portion 352 formed above the bottom portion 351. The lower second protrusions 315 are formed in a triangular shape in a side view. That is, the inclined portion 352 is configured to have a downward slope from the top portion 353 toward the adjacent upper second protrusions 314, 314.

[0107] In addition, the method of joining each of the pressing portion 311, the upper first protrusion 312, the lower first protrusion 313, the multiple upper second protrusions 314, and the multiple lower second protrusions 315 of the fixing device 301 is not limited, and for example, the fixing device 301 may be formed as a single unit, or the fixing device 301 may be formed by joining each part with a known adhesive or the like.

[0108] By configuring the fixture 301 as described above, it is possible to obtain substantially the same effect as the fixture 1 described above. In particular, when pouring a covering material such as mortar on the structure 2 after the reinforcing member 3 is fixed on the structure 2 by the fixture 301 fixed by the fixing pin 51, the covering material is guided by the inclined portion 352 of the lower second projection 315 and is easily filled under the upper second projection 314, and the mortar is easily introduced into the gap 7 formed between the lower surface 311a of the fixture 301 and the surface of the structure 2. Therefore, the contact area between the structure 2, which is a concrete skeleton, and the poured covering material is increased, and the adhesive strength between the structure 2 and the covering material can be improved.

[0109] In addition, it goes without saying that the inclined portion 352 may be a flat surface as shown in FIG. 8, or may be formed as a curved surface. By the covering material such as mortar wrapping around the underside of the upper second protrusion 314, not only does the contact area between the concrete surface and the covering material increase, but the covering material that has entered the underside of the upper second protrusion 314 is caught by (the underside of) the upper second protrusion 314, making it difficult for the covering material to peel off. In addition, since the upper second protrusions 314 are arranged with a plurality of protrusions spaced apart, the covering material is likely to enter between the adjacent protrusions. Furthermore, by arranging the lower second protrusions 315 at positions corresponding to the gaps formed between the adjacent upper second protrusions 314 and forming a guide surface (inclined surface) on the upper surface side of the lower second protrusions 315 that separates and guides the covering material in the left-right direction, the covering material such as mortar is likely to wrap around the space below the upper second protrusions 314. However, since providing the lower second protrusions 315 reduces the contact area between the concrete surface and the covering material, it is preferable that the size of the lower second protrusions 315 is minimized. Therefore, it is preferable that the outer diameter of the lower second protrusions 315 is smaller than the outer diameter of the upper second protrusions 314.

[0110] 9 includes a pressing portion 411, an upper protrusion 412, a lower protrusion 413, and a peripheral portion 414. The fixing device 401 is integrally molded from a resin material.

[0111] The pressing portion 411 is a flat plate that is circular in plan view, and a lower surface 411a abuts against the reinforcing member 3. An upper protrusion 412 is provided on an upper surface 411b of the pressing portion 411. A lower protrusion 413 is provided on a lower surface 411a of the pressing portion 411. A peripheral portion 414 is provided around the pressing portion 411.

[0112] The upper protrusion 412 is formed to protrude perpendicularly to the pressing portion 411 from the center of the upper surface 411b of the pressing portion 411. The shape of the upper protrusion 412 is substantially the same as the shape of the above-mentioned upper first protrusion 12, so a description thereof will be omitted.

[0113] The lower protrusion 413 is formed to protrude perpendicularly to the pressing portion 411 from the center of the lower surface 411a of the pressing portion 411. The lower protrusion 413 is formed in a cylindrical shape, and a second insertion hole 431 is formed therein extending in the same direction as the protruding direction. The length of the lower protrusion 413 in the protruding direction is formed to be greater than the thickness T1 of the intersection portion 31. The lower protrusion 413 is formed with a pair of lower slits 432, 432 that are cut from the tip surface 413a of the lower protrusion 413 toward the pressing portion 411.

[0114] A tip surface 413a of the lower projection 413 in the protruding direction is formed as a flat surface parallel to the lower surface 411a of the pressing portion 411 except for the openings formed by the pair of lower slits 432, 432.

[0115] The upper projection 412 and the lower projection 413 are disposed at positions that overlap in a plan view. The pressing portion 411 has a communication hole 114 formed in the center, the communication hole 114 having a shape that generally matches the shape of the first insertion hole 123 and the second insertion hole 431 in a plan view. The communication hole 114, the first insertion hole 123, and the second insertion hole 431 have cross-sectional shapes that generally match and communicate with each other, forming a driving hole 4 that communicates in one direction from the first insertion hole 123 to the second insertion hole 431.

[0116] The peripheral portion 414 is provided around the upper protrusion 412 and has a rising portion 441 that protrudes from the upper surface 411b in a direction perpendicular to the pressing portion 411. The peripheral portion 414 is formed around the entire periphery of the pressing portion 411. The protruding height of the peripheral portion 414 is smaller than the protruding height of the upper protrusion 412.

[0117] The peripheral portion 414 is formed such that its upper surface 414a is wavy on the peripheral portion of the pressing portion 411. A top portion 442 having a high height of the rising portion 441 in the peripheral portion 414 and a bottom portion 443 having no rising portion 441 are formed so as to be alternately continuous. A recessed portion 444 is formed in the pressing portion 411 facing the top portion 442. The recessed portion 444 has an inclined surface 445 formed on the upper surface 411b of the pressing portion 411, the inclined surface 445 being deeper toward the radially outer side. In addition, an opening 446 is formed in the rising portion 441 facing the recessed portion 444. In other words, the mortar poured into the upper surface 411b of the pressing portion 411 flows through the inclined surface 445 of the recessed portion 444, passes through the opening 446, and is guided downward to the peripheral portion 414. The opening 446 is configured so as not to be visible when the fixing device 401 is viewed from above.

[0118] Although the wavy peripheral portion 414 is a circle formed with a constant width, cutouts with different widths may be provided in parts to make it easier for the coating material such as mortar to flow below the peripheral portion 414. Because an opening 446 for guiding the coating material is formed on the inner diameter side of the peripheral portion 414, it is more effective to provide cutouts on the outer periphery side of the peripheral portion 414.

[0119] A reinforcing portion 447 is formed on the lower surface side of the bottom portion 443 of the peripheral portion 414. The reinforcing portion 447 is formed on the lower surface side of the bottom portion 443 from the lower surface 411a of the pressing portion 411 toward the outside in the radial direction. The lower surface 447a of the reinforcing portion 447 and the lower surface 411a of the pressing portion 411 are formed to be flush with each other. A space portion 448 communicating with the openings 446 is formed between the adjacent reinforcing portions 447, 447.

[0120] In addition, the method of joining the pressing portion 411, the upper protrusion 412, the lower protrusion 413, and the peripheral portion 414 of the fixing device 401 is not limited, and for example, the fixing device 401 may be formed as a single unit, or the respective parts may be formed by joining them with a known adhesive or the like.

[0121] By configuring the fixture 401 as described above, it is possible to obtain substantially the same effects as the fixture 1 described above. In particular, when a covering material such as mortar is poured onto the structure 2 after the reinforcing member 3 is fixed onto the structure 2 by the fixture 401 fixed by the fixing pin 51, the covering material is guided along the inclined surface 445 of the recess 444 and is easily filled from the opening 446 to the underside of the fixture 401, and the mortar is easily introduced into the gap 7 formed between the underside 411a of the fixture 401 and the surface of the structure 2. This increases the contact area between the structure 2, which is a concrete skeleton, and the poured covering material, thereby improving the adhesion strength between the structure 2 and the covering material.

[0122] The above describes an embodiment of the fastener and the method for fixing a grid-shaped reinforcing member according to the present invention. However, the present invention is not limited to the above embodiment and can be modified as appropriate without departing from the spirit of the present invention.

[0123] For example, in the above embodiment, the upper first protrusion 12 has a cylindrical portion 121 and a pair of rectangular parallelepiped ribs 122, 122, but is not limited to the above configuration as long as the desired function can be exhibited. For example, as shown in Fig. 5(a), it may be a truncated cone shape with a slope on the side, as shown in Fig. 5(b), it may be a configuration having four ribs protruding in four directions perpendicular to each other in a plan view, or as shown in Fig. 5(c), it may be formed in a groove shape protruding concavely from the upper surface 112 and configured to fit the injection path 52 of the driving tool 5.

[0124] For example, in the above embodiment, the lower protrusion 13 has a cylindrical shape, but is not limited to the above configuration as long as it can exhibit the desired function. For example, as shown in Fig. 6(a), it may have a truncated cone shape with a slope on the side, or as shown in Fig. 6(b), it may have a polygonal shape.

[0125] For example, in the above embodiment, the upper first protrusion 12 has a pair of upper slits 125, 125, and the lower protrusion 13 has a pair of V-shaped lower slits 133, 133, but the configuration is not limited to the above as long as each protrusion can be crushed to a predetermined height when the fixing pin 51 is driven in. For example, a configuration in which a thin portion is formed at the tip of each of the upper first protrusion 12 and the lower protrusion 13 can be exemplified.

[0126] For example, in the above embodiment, when the diameter of the injection path 52 is large, the multiple upper second protrusions 14 engage with the injection path 52 and communicate between the injection path 52 and the driving hole 4, but if the fastener 1 and the driving machine 5 are engaged with each other by the upper first protrusions 12, the upper second protrusions 14 may not be provided. Also, if the fastener 1 and the driving machine 5 are engaged with each other by the multiple upper second protrusions 14, the upper first protrusions 12 may be omitted, and the fixing pin 51 may be driven into the lower protrusion 13 from the communication hole 114.

[0127] For example, in the above embodiment, the fastener 1 is held by engagement between the upper first protrusion 12 and the injection path 52 of the driving machine 5, but the driving machine 5 may be provided with a contact member (contact arm) that is located near the injection path 52 and comes into contact with the structure 2, and the fastener 1 may be held by the contact member.

[0128] For example, in the above embodiment, the fastener 1 is formed with the driving hole 4 that communicates in one direction from the first insertion hole 123 to the second insertion hole 131, but is not limited to the above configuration as long as each protrusion can be crushed to a predetermined height when the fixing pin 51 is driven in. For example, the configuration may be such that the communication hole 114 is omitted and the first insertion hole 123 and the second insertion hole 131 are not communicated with each other by the retaining portion 11, and when the fixing pin 51 is driven into the fastener 1, the first protrusion 12 and the lower protrusion 13 are crushed and the fixing pin 51 penetrates the retaining portion 11 and is driven into the structure 2. [Explanation of symbols]

[0129] 1,201,301,401 Fixtures 2 structures 3 Grid-shaped reinforcing member (reinforcing member) 5. Hitting machine 11 Holding part 12 Upper first protrusion (upper protrusion) 13 Lower protrusion 14 Upper second protrusion 51 Fixing pin 52 Injection path 113 Tapered surface 122 Contact part (rib) 125 Upper slit 133 Lower slit

Claims

1. A fastener is disposed on a grid-like reinforcing member that is installed in a grid pattern on a surface of a structure, and fastens the grid-like reinforcing member to the structure by driving a fastening pin into the grid-like reinforcing member from above, A flat plate-shaped pressing portion that presses the grid-shaped reinforcing member; an upper protrusion protruding perpendicularly to the holding portion from a surface of the holding portion on a side into which the fixing pin is driven; a lower protrusion protruding perpendicularly to the pressing portion from a surface of the pressing portion that contacts the grid-shaped reinforcing member; Equipped with The upper protrusion has an abutment portion that protrudes outward and abuts against the injection path of a driving tool when the driving tool is abutted against the fixing tool from the upper protrusion side to drive the fixing pin into the upper surface of the pressing portion. Fixtures.

2. The upper protrusion and the lower protrusion are disposed at positions substantially aligned with each other in a plan view. The fixture of claim 1 .

3. The lower projection is formed so as to be crushed when the fixing pin is driven in from the upper projection side. The fixture of claim 1 .

4. The lower protrusion has a lower slit cut from a tip in a protruding direction toward the pressing portion. The fixture of claim 1 .

5. The upper protrusion is formed to be crushed when the fixing pin is driven in. The fixture of claim 1 .

6. The upper protrusion has an upper slit cut from a tip in a protruding direction toward the pressing portion. The fixture of claim 1 .

7. It is integrally formed from a resin material. The fixture of claim 1 .

8. The pressing portion has an outer periphery formed with a tapered surface that expands in diameter upward from a surface side that abuts against the grid-shaped reinforcing member. The fixture of claim 1 .

9. The upper protrusion is located around the lower protrusion in a plan view and includes an upper second protrusion that protrudes perpendicularly to the pressing portion from a surface on a side on which the fixing pin is driven. The fixture of claim 1 .

10. The upper second protrusion is provided so as to protrude radially outward from the periphery of the pressing portion, The fastener according to claim 9 , wherein a lower surface of the upper second projection is located higher than a lower surface of the pressing portion.

11. The upper second protrusions are provided at intervals along the circumferential direction of the pressing portion, The fastener according to claim 10 , wherein a lower second protrusion is provided between adjacent upper second protrusions so as to protrude radially outward from a periphery of the pressing portion.

12. A peripheral portion is provided around the entire periphery of the pressing portion, The peripheral portion is located around the lower protrusion in a plan view, and has a rising portion that protrudes perpendicularly to the pressing portion from a surface on a side on which the fixing pin is driven. A top portion where the rising portion is high and a bottom portion where the rising portion is low are formed alternately and successively on an upper surface of the peripheral portion in a circumferential direction; a recessed portion formed on an upper surface of the pressing portion corresponding to the apex; an opening formed in the rising portion facing the recessed portion, The fixture of claim 1 .

13. A method for fixing a grid-like reinforcing member using the fastener according to any one of claims 1 to 12, comprising the steps of: The driving tool is brought into contact with the fastener from the upper protrusion side to engage the driving tool with the fastener; abutting the tip surface of the lower protrusion against the surface of the structure so that the tip surface of the lower protrusion does not overlap the grid-shaped reinforcing member; The driving tool is driven to drive the fixing pin into the structure; At least a part of the pressing portion is pressed against the grid-shaped reinforcing member to fix the grid-shaped reinforcing member. A method for fixing a grid-shaped reinforcing member.

14. When the fixing pin is driven into the structure, the lower protrusion is crushed between the pressing portion and the structure. The method for fixing a grid-like reinforcing member according to claim 13.

15. When the fixing pin is driven into the structure, the upper protrusion is crushed on a surface of the holding portion on the side into which the fixing pin is driven. The method for fixing a grid-like reinforcing member according to claim 13.

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