JP5448431B2 - Joint material fixing tool - Google Patents

Description

  The present invention relates to a joint material fixing tool for fixing a joint material, which is arranged along the vertical direction on the inner surface of a mold, to be embedded in the surface of a concrete foundation.

  Conventionally, joint materials embedded in the surface of concrete foundations are known in order to form grooves for concentrating cracks in the concrete foundation. The long joint material is arranged along the vertical direction on the inner surface of the mold when the concrete is placed in the mold. At this time, a joint material is hold | maintained at a formwork by fitting with the protrusion part along the up-down direction provided in a formwork (for example, patent document 1).

  Here, in the mold frame, as in Patent Document 1, a mold frame composed of a plurality of mold frame materials arranged side by side and a sheet material (or plate material) laid along the inner surface of the mold frame material, There is simply a mold made of a plurality of mold materials arranged side by side. In addition, in the formwork material, there is a formwork material in which the inner surface is formed in a flat shape, and a formwork material in which irregularities such as protrusions are integrally formed on the inner surface.

Further, the joint material is configured to externally fit the protruding portion of the mold at the fitting portion extending in a groove shape in the longitudinal direction. In addition, when the fitting part of the joint material cannot reliably fit the protruding part of the formwork, that is, when a gap is generated between the fitting part and the protruding part, the fitting is performed to fill the gap. By inserting the insertion material along the longitudinal direction between the joint portion and the ridge portion, the fitting portion of the joint material can be fitted onto the ridge portion of the mold.
JP 2002-115394 A

  However, when placing concrete, liquid concrete is poured, so the joint material receives a large external force (particularly in the lateral direction) from the flowing concrete. And when the external force received from the concrete becomes larger than the holding force by fitting with the projections of the formwork, the joint material comes off from the formwork and is embedded in the concrete (in an undesired position) in that state. Will do.

  Therefore, in view of such circumstances, an object of the present invention is to provide a joint material fixing tool capable of reliably fixing the joint material to the mold.

The joint material fixing tool according to the present invention includes a protrusion extending in the vertical direction of the inner surface, and is disposed along the vertical direction on the inner surface of the mold that forms a space above the protrusion . Fixing the joint material to be fixed to the formwork in a state where the joint material embedded in the surface of the concrete foundation by being placed on the concrete base is fitted to the protruding portion when the concrete is placed. A pair of sandwiching pieces sandwiching the joint material and the outer surface of the mold , and the inner surface of the mold forming a space by the one sandwiching piece. And a claw portion.

  According to the present invention, the pair of sandwiching pieces sandwich the joint material and the formwork, and the claw portion disposed between the pair of sandwiching pieces sandwiches the formwork with the one sandwiching piece. When placing concrete, a joint material arranged along the vertical direction on the inner surface of the mold can be fixed to the mold.

  Further, in the joint material fixing tool according to the present invention, the claw portion includes a side and a pair of claw pieces, and only one of the claw pieces is configured to be able to hold the mold frame with the one holding piece. May be.

  According to such a configuration, the claw portion includes a pair of claw pieces side by side, and the mold can be clamped by only one of the claw pieces and the one clamping piece. Therefore, for example, when one claw piece interferes with a joint material, an insertion material, or a formwork, the other claw piece and one clamping piece are removed by removing (cutting, deforming) one claw piece. Thus, the mold can be clamped.

  Further, the joint material fixing tool according to the present invention includes a main body portion for connecting the pair of sandwiching pieces and the claw portion, and the pair of sandwiching pieces and the claw portion are formed to protrude in the same direction from the main body portion. Also good.

  According to this configuration, the main body portion connects the pair of sandwiching pieces and the claw portion, and the pair of sandwiching pieces and the claw portion are formed so as to protrude from the main body portion in the same direction. Therefore, for example, in a state where the joint material is held in the mold, it can be attached so as to be inserted into the joint material or the mold.

  In the joint material fixing tool according to the present invention, the other holding piece may include a locking portion that protrudes inward to lock the joint material.

  According to this structure, since the other clamping piece is provided with the latching | locking part which protrudes toward inward, a latching | locking part latches a joint material. Therefore, since the other clamping piece can be prevented from being displaced relative to the joint material, the joint material can be more reliably fixed.

  As described above, according to the joint material fixture according to the present invention, the pair of sandwiching pieces sandwich the joint material and the mold frame, and the claw portion sandwiches the mold frame with the one sandwiching piece. It has an excellent effect that it can be securely fixed to the mold.

  Hereinafter, an embodiment of a joint material fixing tool according to the present invention will be described with reference to FIGS.

  As shown in FIGS. 1 to 3, the mold 60 is formed of a plurality of flat plate mold materials (hereinafter simply referred to as “formwork materials”) 61, 61 to form a midway portion of the foundation. ... And a plurality of corner mold materials 62,... Which are bent (in an L shape in plan view) to form the corners of the foundation. The mold 60 is configured by connecting the mold materials 61 and 61 ′ and the corner mold material 62 arranged side by side by a connecting means (not shown).

  The mold material 61 is formed in a long rectangular shape, and is erected so that the longitudinal direction is along the horizontal direction (horizontal direction) and the width direction is along the vertical direction (vertical direction). And the formwork material 61 is provided with the protrusion parts 61a, 61a, 61b extended along an up-down direction in an inner surface so that it may fit in the joint material 70 embed | buried under the foundation of concrete.

  In addition, the mold material 61 includes pattern forming portions 61c and 61c formed in an uneven shape on the inner surface in order to form a pattern on the surface of the foundation. In addition, the mold material 61 is integrally formed with the protruding portions 61a and 61b and the pattern forming portion 61c, for example, with resin.

  The protrusions 61a and 61b are provided at both ends and the center of the mold member 61 in the horizontal direction. The central protrusion 61b is formed so that the width dimension is approximately twice the width of the end protrusion 61a.

  Further, each of the protrusions 61 a and 61 b is formed such that the length in the vertical direction is shorter than the length in the vertical direction of the mold member 61, and is disposed in the middle portion of the mold member 61 in the vertical direction. Specifically, the upper ends of the ridges 61 a and 61 b are not extended to the upper end of the mold member 61, and the lower ends of the ridges 61 a and 61 b are extended to the lower end of the mold member 61. It is not extended.

  The corner mold material 62 is formed so that the vertical length is substantially the same as the vertical length of the mold material 61, and the thickness dimension is smaller than the thickness dimension of the mold material 61. Further, the inner surface of the corner mold material 62 is formed in a planar shape. The corner mold material 62 is made of, for example, metal.

  The joint material 70 is formed in a long shape, and is disposed on the inner surface of the mold 60 along the vertical direction. And the joint material 70 is provided with the flat plate part 71 extended along the longitudinal direction. Further, the joint material 70 has a fitting portion 72 extending in a groove shape along the longitudinal direction so as to externally fit the protrusions 61a and 61b of the mold member 61 on one surface side of the flat plate portion 71. Prepare. The joint material 70 is made of resin and has elasticity.

  The flat plate portion 71 includes a plurality of grooves 71a,... On the other surface side. The groove 71 a is formed over the longitudinal direction of the flat plate portion 71. Moreover, the groove | channel 71a is arrange | positioned so that it may mutually become parallel.

  When the joint material 70 is disposed at the center of the mold member 61, the fitting portion 72 is configured to be able to fit the protrusion 61 b at the center of the mold member 61. Moreover, when the fitting part 72 is arrange | positioned ranging over the edge part of the two formwork materials 61 and 61 with which the joint material 70 is connected, the protrusion part 61a of the edge part of each formwork material 61 is provided. It is configured to be able to fit together (integrally).

  And when the fitting part 72 is arrange | positioned ranging over the edge part of the formwork material 61 and the corner | angular part formwork material 62 with which the joint material 70 is connected, it inserts the elongate insertion material 80 inside. By inserting along the vertical direction, the protrusion 61a at the end of the mold member 61 can be fitted.

  The insertion member 80 is formed so that the width dimension is substantially the same as the width dimension of the protrusion 61 a at the end of the mold member 61. Specifically, the interposition material 80 is formed so that the cross-sectional shape in the horizontal direction is substantially the same as the cross-sectional shape in the horizontal direction of the protrusion 61 a at the end of the formwork material 61.

Further, through挿材80, the length in the vertical direction is substantially equal to the vertical length of the form member 61. Then, the insertion member 80 is arranged over the mold member 61 in the vertical direction. Specifically, the insertion member 80 is arranged such that the upper end coincides with the upper end of the mold member 61 and the lower end coincides with the lower end of the mold member 61. The insertion material 80 is made of resin and has elasticity.

  And as shown in FIGS. 4-7, the joint material fixing tool which concerns on this embodiment is a main-body part 1, a pair of clamping pieces 2 and 3 for clamping the joint material 70 and the formwork 60, A claw portion 4 is provided for clamping the mold 60 with one clamping piece (hereinafter referred to as “first clamping piece”) 2. The joint material fixing tool is attached to each joint material 70 at two locations, that is, an upper end and a lower end (each end portion of the joint material 70), and fixes the joint material 70 to the mold 60.

  The main body 1 is formed in a long flat shape, and connects the pair of sandwiching pieces 2 and 3 and the claw 4. The main body 1 is formed so that the dimension in the width direction is substantially the same (or smaller) as the dimension in the width direction of the joint material 70. The main body 1 has a circular first opening 11 at the center and a rectangular shape larger than the first opening 11 on the other clamping piece (hereinafter referred to as “second clamping piece”) 3 side. A second opening 12.

  The first clamping piece 2 is connected to one end side in the longitudinal direction of the main body 1. The first clamping piece 2 is formed so as to protrude from the one surface side of the main body 1. Specifically, the first clamping piece 2 is formed in a flat plate shape (concave shape rather than the main body portion 1), and is arranged so as to be substantially orthogonal to the main body portion 1 (slightly inwardly inclined). . Further, the first clamping piece 2 is formed so that the dimension in the width direction is substantially the same as the dimension in the width direction of the main body 1.

  Furthermore, the 1st clamping piece 2 is equipped with the bending part 21 formed by bending inward, in order to latch the press form 60 (outer surface of the formwork material 61). Thereby, the 1st clamping piece 2 is formed so that a front-end | tip part may spread outward.

  The second clamping piece 3 is connected to the other end side in the longitudinal direction of the main body 1. And the 2nd clamping piece 3 protrudes from the one surface side of the main-body part 1, and is formed. Specifically, the second sandwiching piece 3 is formed in a flat shape (straighter than the first sandwiching piece 2), protrudes from the main body 1 in the same direction as the first sandwiching piece 2, and is separated from the main body 1. They are arranged so as to be orthogonal.

  Further, the second sandwiching piece 3 is formed so that the widthwise dimension thereof is substantially the same as the widthwise dimension of the main body 1 and the first sandwiching piece 2. And the 2nd clamping piece 3 is formed so that the protrusion length from the main-body part 1 is smaller than the protrusion length from the main-body part 1 in the 1st clamping piece 2. FIG. Further, the second sandwiching piece 3 includes a plurality of (four in the present embodiment) locking portions 31,... Protruding inward to lock the joint material 70.

  Each locking portion 31 is disposed at a different position in the width direction of the second clamping piece 3. Specifically, each locking portion 31 is arranged corresponding to the position of a plurality of grooves 71a provided in the flat plate portion 71 of the joint material 70, and each fits or engages with a different groove 71a. Configured as follows.

  In addition, each of the locking portions 31 is formed so that the protruding amount (relative to the flat portion) is larger than the recessed amount of each groove 71 a of the joint material 70. And each latching | locking part 31 is projected and formed in a hemispherical shape (The four circular shapes in FIG.4 (b) are recessed parts formed with formation of the latching | locking part 31, ...).

  The claw portion 4 is connected to a midway portion in the longitudinal direction of the main body portion 1 and is disposed between the pair of sandwiching pieces 2 and 3. And the nail | claw part 4 protrudes from the one surface side of the main-body part 1, and is formed. Specifically, the claw portion 4 is formed in a flat plate shape, protrudes from the main body portion 1 in the same direction as the pair of holding pieces 2 and 3, and is substantially orthogonal to the main body portion 1 (slightly on the first holding piece 2 side). To be inclined).

  Further, the claw portion 4 is formed so that the dimension in the width direction is smaller than the dimension in the width direction of the main body 1. The claw portion 4 is formed so that the protruding length from the main body portion 1 is smaller than the protruding length from the main body portion 1 in the pair of sandwiching pieces 2 and 3. Further, the claw portion 4 includes a pair of claw pieces 41, 41.

  The pair of claw pieces 41, 41 are arranged side by side, and only one of the claw pieces 41 is configured to be able to hold the mold 60 (formwork material 61) with the first holding piece 2. The pair of claw pieces 41 are formed in substantially the same shape and are arranged in parallel in the width direction of the main body 1.

  Further, the claw piece 41 is bent to be formed on the first sandwiching piece 2 side (inward) so as to lock the mold 60 (the inner surface of the mold material 61 or the corner mold material 62). 41a. Thereby, the claw piece 41 is formed so that the tip end portion is spread outward, and when the claw piece 41 is attached to the joint material 70, the fitting portion 72 of the joint material 70 can be locked.

  The joint material fixture according to the present embodiment is formed from a single metal plate. Specifically, a pair of sandwiching pieces 2 and 3 are formed at both ends of the main body 1 by bending both ends in the longitudinal direction of a long metal plate, and a part of the main body 1 is cut out (punched) ) To form the claw portion 4 (a pair of claw pieces 41, 41).

  The configuration of the joint material fixing tool according to the present embodiment is as described above. Next, a method for attaching and fixing the joint material fixing tool according to the present embodiment will be described.

  First, with reference to FIG. 6, a case where the joint material 70 is arranged across the end portions of the two formwork members 61 and 61 to be connected and is attached to the upper end of the joint material 70 will be described. . In this case, the fitting portion 72 of the joint material 70 is externally fitted integrally with the protrusion 61a at the end of each mold member 61.

  Therefore, since the pair of sandwiching pieces 2 and 3 and the pair of claw pieces 41 and 41 protrude from the main body 1 in the same direction and are arranged substantially in parallel with each other, the joint material 70 and each mold member 61 Attach the joint material fixing tool from above. At this time, since the front ends of the first clamping pieces 2 and the claw pieces 41 spread outward with respect to the respective formwork members 61, the insertion is easy, and although not shown, 2 Each locking part 31 of the clamping piece 3 is guided along each groove 71 a of the joint material 70.

  Then, the flat main body 1 is disposed along the upper surfaces of the mold materials 61 and the joint material 70. The bent portion 21 of the first clamping piece 2 is in pressure contact with the outer surface of each mold member 61, and the bent portion 41 a of each claw piece 41 is in pressure contact with the inner surface of each mold member 61. Thereby, since the 1st clamping piece 2 and a pair of nail | claw pieces 41 and 41 hold | grip each formwork material 61, a joint material fixing tool is fixed to each formwork material 61. FIG.

  At this time, each claw piece 41 is accommodated in a space formed inside the joint material 70 and above the protrusion 61 a of each mold member 61. Thereby, for example, even if the joint material fixing tool and the joint material 70 try to be relatively displaced in the lateral direction, each claw piece 41 locks the inside of the fitting portion 71 of the joint material 70, so that the joint material fixing tool And joint material 70 can be prevented from being displaced relative to each other in the lateral direction.

  In addition, the bent portion 21 of the first sandwiching piece 2 is in pressure contact with the outer surface of each mold member 61, and the second sandwiching piece 3 is in pressure contact with the flat plate portion 71 of the joint material 70. Sandwiches the joint material 70 and each formwork material 61. Thereby, the joint material 70 is fixed to each formwork material 61.

  At this time, each locking part 31 of the second clamping piece 3 locks the joint material 70 by each groove 71a. Thereby, for example, even if the joint material fixing tool and the joint material 70 are about to be displaced relatively in the lateral direction, each locking portion 31 is locked to each groove portion 71a of the joint material 70. It is possible to further prevent the joint material 70 from being displaced in the lateral direction.

  Next, referring to FIG. 7, the joint material 70 is disposed across the end portions of the mold material 61 and the corner mold material 62 to be connected, and the joint material 70 is arranged at the upper end of the joint material 70. The case of attachment will be described. In addition, about the content which overlaps with the case where it demonstrated referring said FIG. 6, description is abbreviate | omitted.

  In such a case, the fitting portion 72 of the joint material 70 is externally fitted to the protrusion 61a at the end of the mold member 61 by inserting the insertion member 80 along the vertical direction. Thereby, since the insertion material 80 is arrange | positioned to the upper end of the corner | angular part formwork material 62, in this state, one nail piece 41 will interfere with the insertion material 80, As a result, the joint material 70 and each formwork The joint material fixing tool cannot be attached to the materials 61 and 62.

  Therefore, after deforming the joint material fixing tool so that the one claw piece 41 is substantially flush with the main body portion 1 (so as to be disposed along the main body portion 1), the joint material 70 and each formwork The joint material fixing tool is inserted from above the material 61 and attached. Then, the bent portion 21 of the first clamping piece 2 is in pressure contact with the outer surface of the mold member 61 having a thickness dimension larger than that of the corner mold member 62, and the bent portion 41 a of the other claw piece 41 is in contact with the mold member 61. Press contact with the inner surface. As a result, the first clamping piece 2 and the other claw piece 41 clamp the mold material 61, and the joint material fixture is fixed to the mold material 61.

  At this time, the other claw piece 41 is accommodated in a space formed inside the joint material 70 and above the protruding portion 61 a of the mold member 61. Thereby, for example, even when the joint material fixing tool and the joint material 70 are about to be relatively displaced in the lateral direction, each claw piece 41 is engaged with the inside of the fitting portion 71 of the joint material 70 or the side of the insertion material 80. Therefore, the joint material fixing tool and the joint material 70 can be prevented from being relatively displaced in the lateral direction.

  In addition, the bent portion 21 of the first sandwiching piece 2 is in pressure contact with the outer surface of the mold member 61, and the second sandwiching piece 3 is in pressure contact with the flat plate portion 71 of the joint material 70, whereby the pair of sandwiching pieces 2 and 3 are formed. The joint material 70 and the formwork material 61 are clamped. Thereby, the joint material 70 is fixed to each formwork material 61 and 62.

  As described above, in the joint material fixing tool according to the present embodiment, the pair of sandwiching pieces 2 and 3 sandwich the joint material 70 and the mold 60 (formwork 61), and are arranged between the pair of sandwiching pieces 2 and 3. Since the nail | claw part 4 (nail piece 41) clamps the formwork 60 (formwork material 61) with the 1st clamping piece 2, it arrange | positions along the up-down direction on the inner surface of the formwork 60 (formwork material 61). The joint material 70 to be formed can be securely fixed to the mold 60 (formwork 61).

  Further, in the joint material fixing tool according to the present embodiment, the claw portion 4 includes a pair of claw pieces 41, 41, and even with only one claw piece 41, the mold 60 (mold material) 61) can be clamped, and even when one claw piece 41 interferes with the insertion material 80, the other claw piece 41 is deformed so as to eliminate one claw piece 41. And the first clamping piece 2 can clamp the mold 60 (formwork material 61).

  In the joint material fixing tool according to the present embodiment, the main body 1 connects the pair of sandwiching pieces 2 and 3 and the claw portions 4 (each claw piece 41), and the pair of sandwiching pieces 2 and 3 and the claw portion 4. (Each claw piece 41) is formed to protrude from the main body 1 in the same direction. Therefore, the joint material 70 can be attached to the joint material 70 and the mold 60 so as to be inserted from above with the joint material 70 being held by the mold 60.

  Moreover, since the joint fixing tool which concerns on this embodiment is provided with the latching | locking part 31, ... which the 2nd clamping piece 3 protrudes toward inward, the latching | locking part 31, ... latches the joint material 70. FIG. Therefore, it is possible to prevent the second holding piece 3 from being displaced relative to the joint material 70, and to fix the joint material 70 more reliably.

  The joint material fixture according to the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

  For example, in the joint material fixing tool according to the above-described embodiment, the case in which the mold frame 60 is configured by the mold frame material 61 and the corner mold material 62 has been described. However, the present invention is not limited thereto. As described above, it may be configured by a mold material and a sheet material (or plate material) laid along the inner surface of the mold material.

  Moreover, although the case where the 1st clamping piece 2 was equipped with the bending part 21 was demonstrated in the joint material fixing tool which concerns on the said embodiment, it is not restricted to this. For example, as shown in FIG. 8 (a), the first holding piece may be provided with a bending portion 22 that curves inward, and as shown in FIG. 8 (b), the first holding piece is A hook portion 23 formed by bending the tip portion into a hook shape may be provided. Further, as shown in FIG. 8C, the first sandwiching piece 2 ′ is flat and inclined inward. It may be formed in a shape.

  Further, in the joint material fixing tool according to the above-described embodiment, the case where the first sandwiching piece 2 is configured by one piece has been described. However, the present invention is not limited to this case, and as shown in FIG. One clamping piece may be configured to include a pair of pieces 24 and 24. According to such a configuration, even when the joint material 70 is disposed across the end portions of the mold material 61 and the corner mold material 62 having different thickness dimensions, it is possible to cope with the problem more effectively.

  Moreover, in the joint material fixing tool which concerns on the said embodiment, although the case where the 2nd clamping piece 3 was formed in flat shape and connected so that it might orthogonally cross with the main-body part 1, it was not restricted to this. For example, as in the case of the first sandwiching piece 2 of the above embodiment, it may be provided with a bent portion (see reference numeral 21 in FIG. 4), a curved portion (see FIG. 8A), or a latching portion. (See FIG. 8B) may be provided, and further, the case may be inclined inward (see FIG. 8C).

  Moreover, in the joint material fixing tool which concerns on the said embodiment, although the nail | claw part 4 was provided with a pair of claw pieces 41 and 41 and each claw piece 41 was provided with the bending part 41a, it is not restricted to this. . For example, the claw portion may be composed of one piece, and the claw portion may be provided with a curved portion (see FIG. 8A) or a latching portion (see FIG. 8B). In addition, the claw portion may be formed in a flat shape.

  Further, in the joint material fixing tool according to the above embodiment, the case of preventing the interference with the insertion member 80 by deforming one of the claw pieces 41 is not limited to such a case. One nail piece 41 may be deleted (cut). In such a case, a cut groove may be provided in the base end portion of the claw piece 41 in order to make it easy to cut the claw piece 41.

  Moreover, in the joint material fixing tool which concerns on the said embodiment, although the case where it formed from one metal plate was demonstrated, it is not restricted to such a case. Specifically, it may be formed from a resin, or may be formed integrally without being formed integrally.

It is a principal part schematic diagram of the formwork to which the joint material fixing tool which concerns on one Embodiment of this invention is attached, Comprising: The top view of the state in which the joint material is attached is shown. It is a principal part schematic diagram of the formwork to which the joint material fixing tool which concerns on the embodiment is attached, Comprising: The perspective view of the state to which the joint material is attached is shown. It is a principal part schematic diagram of the formwork to which the joint material fixing tool which concerns on the embodiment is attached, Comprising: The perspective view of the state in which the joint material is not attached is shown. It is a general view in the joint material fixing tool which concerns on the embodiment, Comprising: (a) is a top view, (b) shows a front view. It is a general view in the joint material fixing tool which concerns on the embodiment, (a) is sectional drawing in the AA of FIG. 4, (b) is a side view of the B arrow direction of FIG. 4, (c) is a figure. The side view of 4 C arrow direction is shown. In the joint material fixing tool which concerns on the embodiment, it is a general view of the state attached to the formwork and the joint material, (a) is a top view, (b) shows sectional drawing in the DD line. In the joint material fixing tool which concerns on the embodiment, it is a general view of the state attached to the formwork and the joint material, (a) is a top view, (b) shows sectional drawing in the EE line | wire. (A)-(c) is a principal part front view in the joint material fixing tool which concerns on other embodiment of this invention, (d) shows the whole side view of the C arrow direction of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Main-body part, 2 ... (1st) clamping piece, 3 ... (2nd) clamping piece, 31 ... Locking part, 4 ... Claw part, 41 ... Claw piece, 60 ... Formwork, 70 ... Joint material

Claims (4)

A concrete foundation by extending a ridge portion in the vertical direction of the inner surface, being arranged along the vertical direction on the inner surface of the mold that forms a space above the ridge, and placing concrete in the mold A joint material fixing tool for fixing the joint material embedded in the surface of the mold in a state in which the joint material is placed in the state where the joint material is fitted to the protruding portion ,
A pair of sandwiching pieces that sandwich the joint material and the outer surface of the formwork , and a claw part that is disposed between the pair of sandwiching pieces and sandwiches the inner surface of the formwork that forms a space with the one sandwiching piece. A joint material fixture characterized by that.   The joint material fixing tool according to claim 1, wherein the claw portion includes a pair of claw pieces side by side, and only one of the claw pieces can be clamped by the one clamping piece.   The joint material fixing tool according to claim 1 or 2, further comprising a main body portion that connects the pair of sandwiching pieces and the claw portion, wherein the pair of sandwiching pieces and the claw portion are formed to protrude in the same direction from the main body portion.   The joint material fixing tool according to any one of claims 1 to 3, wherein the other sandwiching piece includes a locking portion protruding inward to lock the joint material.

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