JP4410087B2 - Anchor bolt fixing device - Google Patents

Description

  The present invention relates to an anchor bolt fixing device used when a structure having an anchor bolt insertion hole is fixed with a nut to a so-called anchor bolt fixed by being embedded in concrete or the like.

  In Patent Document 1, the anchor bolt insertion hole of the pedestal is enlarged for the purpose of firmly fixing the structure to be fixed by the anchor bolt at the correct position even if the position of the anchor bolt is not accurate. A structure is shown in which a structure is fixed through a washer that is formed and provided with a through hole that fits into an anchor bolt at the center or an eccentric position.

  In Patent Document 2, for the purpose of providing a washer that can be easily attached even if the position of an anchor bolt that has been pre-adjusted with respect to a large hole for inserting an anchor bolt provided on a pedestal is greatly shifted, A structure of a washer is shown in which a pair of large and small lower and upper washers each having a protrusion and a through hole eccentric from the center are rotatably superposed.

In Patent Document 3, even if the anchor bolt is eccentric from the reference position, the structure to be fixed by the anchor bolt can be fixed at a desired position, and the strength is not reduced and the man-hour is not increased. For the purpose of providing a washer, a circular convex fitting adjustment portion that fits into the washer receiving hole in the pedestal, and a locking flange portion that presses the outer peripheral portion of the washer receiving hole on the nut tightening surface side of the pedestal. For the fitting adjusting portion, a washer has been developed in which an anchor bolt hole is formed so as to penetrate the locking flange portion so that the eccentric position is different.
JP-A 62-296035 JP-A-6-74227 JP2000-110240A

  However, in order to achieve the purpose with the washer shown in Patent Document 1, a washer with a through hole in the center, a washer with a through hole at a slightly eccentric position, and a through hole at a largely eccentric position are provided. It is necessary to prepare multiple types of washers such as a washer. In order to eliminate such inconvenience, a washer for an anchor bolt shown in Patent Document 2 has been developed.

  However, in the washer for an anchor bolt shown in Patent Document 2, the washer rotates when a large lateral force is applied to the pedestal. Therefore, the structure to be fixed by the anchor bolt together with the pedestal is displaced relative to the anchor bolt. There was a bug.

  Moreover, in the washer for fixing the anchor bolt shown in Patent Document 3, if the eccentric amount of the anchor bolt exceeds the allowable value, it is necessary to prepare a washer with another allowable value. When a large lateral force is applied, the washer rotates, so that the inconvenience in Patent Document 1 and the problem in Patent Document 2 have not been solved.

  Therefore, the present inventor makes it easy to insert the anchor bolt into the anchor bolt insertion hole regardless of the position of the anchor bolt in the anchor bolt insertion hole of the base by using a set of two washers. And the anchor bolt fixing device provided with the structure which prevented the structure etc. from having shifted | deviated to the anchor bolt as much as possible even if external force acted on the structure etc. fixed with the anchor bolt was developed.

The anchor bolt fixing device according to the present invention includes a pedestal, a first washer, and a second washer, and the pedestal is provided with an anchor bolt insertion hole larger than the diameter of the anchor bolt, and the first washer A pedestal-fitting circular convex portion is provided on the back surface of the pedestal-fitting circular convex portion and is concentric with the pedestal-fitting circular convex portion. An inscribed portion half of the inner diameter equal to the diameter of the anchor bolt inscribed in the circular convex portion for fitting the pedestal having a central semicircle with an inner diameter equal to the diameter of the anchor bolt and a chord collinear with the chord of the central semicircle A circle having a diameter equal to the diameter of the anchor bolt while being in contact with the continuous part of the center semicircle and the inscribed part semicircle, Moves in the opposite direction from the central semicircle to the inscribed semicircle An anchor bolt movement hole through which the anchor bolt can be inserted is provided, and the second washer is fitted on the back surface of the anchor bolt movement hole. and, first washer fitting circular protrusion of diameter equal to the diameter of the anchor bolt is provided, and the anchor bolt through-hole having an inner diameter equal to the diameter of the anchor bolt can be inserted anchor bolt is at least the first washer fitting It is characterized by being provided leaving a part of the circular convex portion.

  Since the anchor bolt insertion hole provided in the pedestal is larger than the diameter of the anchor bolt by configuring as described above, the anchor bolt embedded position and the anchor bolt insertion of the pedestal are within the range of the anchor bolt insertion hole. Even if the through hole is slightly deviated, the anchor bolt insertion hole of the base can be inserted into the anchor bolt, so that the base can be easily fitted into the anchor bolt.

  The first washer has a base fitting circular convex portion provided on the back surface thereof rotatably fitted in the anchor bolt insertion hole. Therefore, when the first washer is rotated with respect to the base, The anchor bolt moving hole provided in the circular convex portion can be rotated in the anchor bolt insertion hole.

In addition, the anchor bolt moving hole has a center semicircle having an inner diameter equal to the diameter of the anchor bolt concentric with the circular fitting for fitting the base, and the base fitting having a string collinear with the chord of the center semicircle. While touching the continuous part of two semicircles in which an inscribed part semicircle having an inner diameter equal to the diameter of the anchor bolt inscribed in the joint circular convex part and the central part semicircle and the inscribed part semicircle A circle having a diameter equal to the diameter of the anchor bolt is surrounded by a trajectory line formed by a trajectory moved from the central semicircle to the inscribed semicircle in the direction opposite to the arc of the central semicircle, Since the anchor bolt is formed so that it can be inserted, any one from the center semicircle concentric with the circular protrusion for pedestal fitting in the anchor bolt moving hole to the inscribed part semicircle inscribed in the circular convex part for pedestal fitting The anchor bolt can be inserted even at the position of A.

  Therefore, the anchor bolt inserted into the anchor bolt insertion hole is inserted into the anchor bolt moving hole by appropriately rotating the first washer at any position with respect to the anchor bolt insertion hole, The base fitting circular convex portion can be fitted into the anchor bolt insertion hole.

  In the anchor bolt fixing device described above, it is desirable that the anchor bolt insertion hole provided in the pedestal has a circular shape with the same diameter as the pedestal fitting circular convex portion.

  Further, the second washer can insert the anchor bolt into the anchor bolt through hole, and in the state where the anchor bolt is inserted, the first washer fitting circular convex portion provided on the back surface of the second washer is It can be fitted into the anchor bolt moving hole. Therefore, the anchor bolt is inserted into the anchor bolt insertion hole of the base, the anchor bolt is inserted into the anchor bolt movement hole of the first washer, and the base fitting circular convex portion of the first washer is inserted into the anchor bolt insertion hole. In this state, the anchor bolt can be inserted into the anchor bolt through hole of the second washer, and the first washer fitting circular convex portion can be fitted into the anchor bolt moving hole. If the screw is screwed from the tip of the anchor bolt and tightened, the base is fixed to the anchor bolt.

Further, in the anchor bolt fixing device described above, the anchor bolt insertion hole provided in the pedestal is a rounded square having the same length and length as the diameter of the circular protrusion for pedestal fitting. An extension hole portion having an inner diameter equal to the diameter of the anchor bolt to which the anchor bolt can move from the anchor bolt movement hole is provided on the outer side of the inscribed semicircle side in the provided anchor bolt movement hole. Also good. In this case, any one from the center semicircle concentric with the pedestal fitting circular convex portion in the anchor bolt moving hole to the inscribed portion semicircle inscribed in the pedestal fitting circular convex portion to the extension hole portion. Even at the position, the anchor bolt can be inserted. Therefore, the anchor bolt inserted into the anchor bolt insertion hole can be turned into the anchor bolt moving hole or the extension hole portion by appropriately rotating the first washer at any position with respect to the anchor bolt insertion hole. The circular protrusion for base fitting can be fitted into the hole for anchor bolt insertion by being inserted. Moreover, the 2nd washer can make the 1st washer fitting circular convex part provided in the back surface of the 2nd washer fit in the said anchor bolt movement hole or the extension hole part in the state which penetrated the anchor bolt. Therefore, the anchor bolt is inserted into the anchor bolt insertion hole of the base, and the anchor bolt is inserted into the anchor bolt moving hole or the extension hole of the first washer to anchor the circular fitting for mating the base of the first washer. In a state where the bolt is inserted into the bolt insertion hole, the anchor bolt is inserted into the anchor bolt through hole of the second washer, and the first washer fitting circular convex portion is fitted into the anchor bolt moving hole or the extension hole. After that, if a predetermined nut is screwed and tightened from the tip of the anchor bolt, the base is fixed to the anchor bolt.

  As described above, in the state where the pedestal is fixed to the anchor bolt, even if a force is applied from the lateral direction to the pedestal, the first washer fitting circular convex portion serves to regulate the movement of the pedestal with respect to the anchor bolt. . Below, in the case of four types in which the positions of the anchor bolt and the anchor bolt insertion hole are different, the first washer fitting circular convex portion is compared with the case where the second washer is not used and the case where it is used. Prove that it plays a role in regulating the movement of the pedestal relative to the anchor bolt.

  FIG. 8 shows a case where the second washer is not used, and the base A in which the circular anchor bolt insertion hole is formed is fitted into the anchor bolt B that is fixed, and the first washer C is fitted into the base. FIG. 8A is a view when the anchor bolt B is located at the center of the anchor bolt insertion hole, and FIG. 8B is a view showing that the anchor bolt B is about 3 from the center of the anchor bolt insertion hole. FIG. 8C is a diagram when the anchor bolt B is decentered to the left by about two thirds from the center of the anchor bolt insertion hole, and FIG. d) is a view when the anchor bolt B reaches a position inscribed in the anchor bolt insertion hole.

  In FIG. 8A, when force is applied in the directions of arrows a1 and a4, the first washer C cannot move because there is no gap between the first washer C and the anchor bolt B in each direction. Pedestal A does not move either. When a force is applied in the direction of the arrow a2, there is a gap S in which the first washer C can move between the first washer C and the anchor bolt B in that direction. Since it starts to rotate while moving, the pedestal A moves out of position. When force is applied in the direction of the arrow a3, the projecting continuous portion C9 becomes an obstacle and the first washer C cannot move, so the pedestal A also does not move.

  In FIG. 8B, when a force is applied in each direction of arrows b1, b2, b3, and b4, the first washer C can move between the first washer C and the anchor bolt B in each direction. Since there is a gap S, the first washer C starts to rotate while moving due to the gap S, so that the pedestal A shifts.

  In FIG. 8C, when force is applied in each direction of arrows c1, c2, c3, and c4, the first washer C can move between the first washer C and the anchor bolt B in each direction. Since there is a gap S, the first washer C starts to rotate while moving due to this gap, so the pedestal A is displaced.

  In FIG. 8D, when a force is applied in the direction of the arrow d1, the protrusion A is an obstacle, and the first washer C cannot move, so the pedestal A does not move. When a force is applied in the direction of the arrow d2, there is a gap S in which the first washer C can move between the first washer C and the anchor bolt B in that direction. Since it begins to rotate while moving, the pedestal A will shift. When a force is applied in the directions of the arrows d3 and a4, the first washer C cannot move because there is no gap between the first washer C and the anchor bolt B in each direction, and therefore the pedestal A does not move.

  As described above, when the second washer is not used, it can be understood that there is a high possibility that the pedestal A shifts when a force from the lateral direction is applied.

  FIG. 9 shows a case where the second washer is used, and the base A in which the circular anchor bolt insertion hole is formed is fitted into the fixed anchor bolt B, and the first washer C is fitted into the base A. It is explanatory drawing of the state which inserted the 2nd washer in this 1st washer C, and D1 in the figure is a circular convex part for the 1st washer fitting of the 2nd washer. FIG. 9A is a view when the anchor bolt B is positioned at the center of the anchor bolt insertion hole, and FIG. 9B is a view where the anchor bolt B is about one third left from the center of the anchor bolt insertion hole. FIG. 9C is a diagram when the anchor bolt B is eccentric to the left by about two thirds from the center of the anchor bolt insertion hole, and FIG. 9D is a diagram when the anchor bolt B is eccentric. It is a figure when reaches the position inscribed in an anchor bolt insertion hole.

  In FIG. 9A, when force is applied in the directions of arrows a1 and a4, the first washer C cannot move because there is no gap between the first washer C and the anchor bolt B in each direction. Pedestal A does not move either. When a force is applied in the direction of the arrow a2, the first washer fitting circular convex portion D1 is sandwiched between the anchor bolt moving holes in that direction, so that the first washer C cannot move, and therefore the pedestal A also moves. Absent. When force is applied in the direction of the arrow a3, the projecting continuous portion C9 becomes an obstacle and the first washer C cannot move, so the pedestal A also does not move.

  In FIG. 9B, when a force is applied in the direction of arrows b1 and b3, there is a gap S between the first washer C and the anchor bolt B in that direction. Since it is difficult to smoothly pass both the anchor bolt B and the first washer fitting circular convex portion D1 adjacent to the anchor bolt B through the anchor bolt moving hole, the first washer C can move. Therefore, the base A does not move. The reason why the anchor bolt B and the first washer fitting circular convex portion D1 adjacent to the anchor bolt B do not smoothly pass through the anchor bolt moving hole is that the anchor bolt moving hole is curved. The direction of the acting force that causes the anchor bolt B to pass through the bolt moving hole is different from the direction in which the first washer fitting convex portion D1 should pass through the anchor bolt moving hole. In other words, since the anchor bolt moving hole is curved, the traveling direction of the anchor bolt B in the anchor bolt moving hole is different from the traveling direction of the first washer fitting convex portion D1. When force is applied in the direction of the arrows b2 and b4, the first washer C and the first washer fitting circular convex portion D1 are sandwiched between the anchor bolt moving holes in that direction. It cannot move, so pedestal A does not move either.

  In FIG. 9C, when force is applied in the directions of the arrows c1 and c3, there is a gap S between the first washer C and the anchor bolt B in that direction. Since it is difficult to smoothly pass both the anchor bolt B and the first washer fitting circular convex portion D1 adjacent to the anchor bolt B through the anchor bolt moving hole, the first washer C can move. Therefore, the base A does not move. Also in this case, the traveling direction of the anchor bolt B in the anchor bolt moving hole is different from the traveling direction of the first washer fitting convex portion D1. When a force is applied in the direction of the arrows c2 and c4, the first washer C and the first washer-fitting circular convex portion D1 are sandwiched between the anchor bolt moving holes in that direction. It cannot move, so pedestal A does not move either.

  In FIG. 9D, when a force is applied in the direction of the arrow d1, the protrusion A-like portion C9 becomes an obstacle and the first washer C cannot move, so the pedestal A also does not move. When a force is applied in the direction of the arrow d2, the first washer fitting circular convex portion D1 is sandwiched between the anchor bolt moving holes in that direction, so that the first washer C cannot move, and therefore the pedestal A also moves. Absent. When a force is applied in the directions of the arrows d3 and d4, there is no gap between the first washer C and the anchor bolt B in each direction, so the first washer C cannot move, and therefore the pedestal A does not move.

  As described above, when the pedestal A moves with respect to the anchor bolt B that is fixed, the first washer C needs to rotate. However, when the second washer is used as described above, The first washer-fitting circular convex portion D1 formed on the two washers must move along the anchor bolt movement hole of the first washer C together with the anchor bolt B. The traveling direction of the anchor bolt B in the anchor bolt movement hole Since the traveling direction of the first washer fitting convex portion is different, the first washer does not easily rotate. Therefore, by using the second washer, it is possible to prevent the pedestal A from shifting.

  According to the anchor bolt fixing device according to the present invention described above, by using a set of two washers, the anchor bolt can be anchored at any position within the anchor bolt insertion hole of the base. Even if an external force is applied to the pedestal fixed by the anchor bolt, it is possible to prevent the pedestal from moving with respect to the anchor bolt as much as possible. The structure etc. which are attached can be fixed stably.

  Hereinafter, preferred embodiments 1 and 2 of the anchor bolt fixing device according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is an exploded perspective view of the anchor bolt fixing device according to the first embodiment, FIG. 2 is an explanatory view showing a state in which the anchor bolt fixing device according to the first embodiment is assembled, and FIG. FIG. 4 is a schematic view of the first washer used in the anchor bolt fixing device according to 1 as viewed from the pedestal fitting convex portion side, and FIG. 4 shows the second washer used in the anchor bolt fixing device according to the first embodiment. It is the schematic seen from the circular convex part side for 1st washer fitting.

  1-4, P shows the anchor bolt fixing device which concerns on a present Example, and is comprised from the base A, the 1st washer C, and the 2nd washer D.

The pedestal A is provided with a circular anchor bolt insertion hole A1 having a diameter larger than that of the anchor bolt B. In this embodiment, the diameter of the anchor bolt B is 10 mm, and the diameter of the circular anchor bolt insertion hole A1 is 34 mm.

  By configuring the pedestal A as described above, the anchor bolt insertion hole A1 provided in the pedestal A is 34 mm and the diameter of the anchor bolt B is larger than 10 mm, so that it is within the range of the anchor bolt insertion hole A1. Even if the anchor bolt B burying position and the anchor bolt insertion hole A1 of the base A are slightly shifted, the anchor bolt insertion hole A1 of the base A can be inserted into the anchor bolt B. The base A can be easily fitted.

  The first washer C is provided with a pedestal fitting circular convex portion C1 which can be fitted and rotated in the anchor bolt insertion hole A1 on the back surface thereof. In this embodiment, the diameter of the pedestal fitting circular convex portion C1 is set to 34 mm, and the pedestal fitting circular projection C1 is designed to be rotatably fitted to the anchor bolt insertion hole A1.

  As shown in detail in FIG. 3, the pedestal fitting circular convex portion C1 is provided with an anchor bolt moving hole C2 into which the anchor bolt B can be inserted. This is a hole having a shape surrounded by a two-half semicircle C3 and a locus line C8 described below. That is, the double semicircle C3 can be inserted with a concentric anchor bolt B having the same center as that of the circular convex portion C1 for fitting the base, and a central semicircle having a diameter of 10 mm substantially equal to the diameter of the anchor bolt B. C4 and an inscribed portion semicircle C6 having a diameter of 10 mm substantially equal to the diameter of the anchor bolt B inscribed in the base fitting circular convex portion C1 having a chord C7 that is collinear with the chord C5 of the central semicircle C4 It is a curve of two mountain semicircles formed continuously. The locus line C8 is a circle having a diameter of 10 mm, which is substantially equal to the diameter of the anchor bolt B, while being in contact with the continuous portion C9 of the central semicircle C4 and the inscribed semicircle C6 in the two semicircles C3. It is a curve formed by a trajectory moved from the central semicircle C4 to the inscribed semicircle C6 in the opposite direction to the arc side of the circle C4. Since the sum of the diameter of the inscribed portion semicircle C6, the width of the continuous portion C9, and the radius of the central semicircle C4 is equal to the radius of the anchor bolt insertion hole, the width of the continuous portion C9 in the first embodiment is about 2 mm. It becomes.

  By configuring the first washer C as described above, the base washer fitting circular convex portion C1 provided on the back surface of the first washer C is rotatably fitted in the anchor bolt insertion hole A1. And if the 1st washer C is rotated with respect to the base A, the anchor bolt moving hole C2 provided in the circular fitting C1 for base fitting can be rotated in the anchor bolt insertion hole A1. The anchor bolt moving hole C2 can be inserted with the anchor bolt B at any position from the central semicircle C4 to the inscribed semicircle C6. Therefore, the anchor bolt B inserted into the anchor bolt insertion hole A1 can be obtained by appropriately rotating the first washer C regardless of the position of the anchor bolt B with respect to the anchor bolt insertion hole A1. The bolt moving hole C2 can be inserted, and the base fitting circular convex portion C1 can be fitted into the anchor bolt inserting hole A1.

  As shown in detail in FIG. 4, the second washer D is fitted to the anchor bolt moving hole C2 on the back surface thereof, and the first washer fitting circular convex portion having a diameter of 10 mm substantially equal to the diameter of the anchor bolt B. D1 is provided. In addition, the second washer D leaves at least a part of the first washer-fitting circular convex portion D1, and has an anchor bolt through hole D2 having a diameter of 10 mm substantially equal to the diameter of the anchor bolt B through which the anchor bolt B can be inserted. Is provided. It should be noted that, regardless of the position of the anchor bolt B in the anchor bolt moving hole C2 in the first washer C, the anchor was fixed by changing the position of the first washer fitting circular convex portion D1 in the second washer D. The second washer D can be fitted into the bolt moving hole C2. That is, when the anchor bolt B is positioned on the right side with respect to the anchor bolt moving hole C2 in the first washer C, the first washer fitting circular convex portion D1 is positioned on the left side of the anchor bolt B to move the anchor bolt. When the anchor bolt B is positioned on the left side with respect to the anchor bolt moving hole C2 in the first washer C, while the second washer D is fitted in the hole C2, the first washer fitting circular convex portion D1 is Positioned on the right side of the anchor bolt B, the second washer D can be fitted into the anchor bolt moving hole C2.

  By configuring the second washer D in this manner, the anchor bolt B can be inserted into the anchor bolt through hole D2 formed in the second washer D, and in the state where the anchor bolt B is inserted, the second washer The first washer fitting circular projection D1 provided on the back surface of D can be fitted into the anchor bolt moving hole C2. Accordingly, the anchor bolt B is inserted into the anchor bolt insertion hole A1 of the pedestal A, and the base fitting circular protrusion C1 of the first washer C is fitted to the anchor bolt insertion hole A1, whereby the pedestal A is fitted with the first washer. In a state where C is combined, the anchor bolt B is inserted into the anchor bolt through hole D2 of the second washer D, and the first washer fitting circular convex portion D1 is fitted into the anchor bolt moving hole C2, thereby The second washer D can be combined with the one washer C, and then the base A is fixed to the anchor bolt B by screwing a predetermined nut E from the tip of the anchor bolt B and tightening.

  As described above, as the anchor bolt fixing device P shown in the first embodiment is configured, the anchor bolt B is connected to the anchor bolt insertion hole A1 as described in the means for solving the problem. Since the first washer-fitting circular convex portion D1 formed on the second washer D prevents the first washer C from rotating at any position, any lateral force acts on the base A. In addition, the movement of the base A can be prevented. Therefore, if this anchor bolt fixing device P is used, even if a force is applied to the structure or the like that is combined with the pedestal A, the structure or the like can be prevented from shifting.

  It should be noted that the dimensions are specified in Example 1 only to help understanding, and are not limited to this. Needless to say, the anchor bolt moving hole C2 of the first washer C may be symmetrical with the one shown in the embodiment. Further, the shape of the anchor bolt insertion hole A1 in the pedestal A is not limited to a circle as in the first embodiment, but may be a quadrangle or other polygons as in the second embodiment described below. The thing which touches is preferable. Further, the anchor bolt insertion hole A1 of the pedestal A with respect to the anchor bolt B is not limited to that of the first embodiment, and the diameter of the anchor bolt B and the diameter of the anchor bolt insertion hole A1 is 1: 2.5. A range of ˜1 to 4.0 is preferred.

  Moreover, if the radial uneven groove which meshes | engages with each other is formed in the surface where the 1st washer C and the 2nd washer D contact, the shift | offset | difference movement of the base A can be prevented further. Furthermore, if the radial concave and convex grooves that mesh with each other are formed on the surface that contacts the first washer C and the base A, the movement of the base A can be further prevented. Furthermore, a radial uneven groove that meshes with each other is formed on the surface where the anchor bolt moving hole C2 of the first washer C and the first washer-fitting circular projection D1 of the second washer D are in contact with each other. Then, the movement of the pedestal A can be further prevented. In addition, when a radial concave and convex cut groove that meshes with each other is formed on the surface where the circular fitting C1 for base fitting of the first washer C and the anchor bolt insertion hole A1 of the base A are fitted and contacted, The shift movement can be further prevented.

  The second embodiment is a modified example of the pedestal A and the first washer C in the first embodiment. Since the remaining configuration is the same as that of the first embodiment, the description thereof is omitted in the second embodiment. The same configuration as in FIG.

  FIG. 5 is a schematic view of the first washer according to the second embodiment as viewed from the side of the circular convex portion for base fitting, FIG. 6 is a rear view of FIG. 5, and FIG. It is the schematic which looked at the state which fitted the washer from the circular convex part side for base fitting of the 1st washer.

  As shown in FIG. 7, in the base A ′ in the second embodiment, the anchor bolt insertion hole A1 ′ provided in the base A ′ has the same diameter and length as the base fitting circular projection C1 ′. It is a configuration of a rounded square shape. As shown in FIGS. 5 and 6, the first washer C ′ is moved from the anchor bolt moving hole C2 ′ to the anchor bolt moving hole C2 ′ provided in the first washer C ′. An extension hole C10 having a diameter substantially equal to the diameter of the possible anchor bolt B is provided on the outer side of the inscribed portion semicircle C6 ′.

  If comprised as mentioned above, the inscribed part semicircle inscribed in the circular convex part C1 'for base fitting from the center part semicircle C4' concentric with the circular convex part C1 'for base fitting in hole C2' for anchor bolt movement The anchor bolt B can be inserted through any position from C6 ′ to the extension hole C10.

  Accordingly, the anchor bolt B inserted through the anchor bolt insertion hole A1 ′ can be moved by appropriately rotating the first washer C ′ at any position with respect to the anchor bolt insertion hole A1 ′. The insertion hole C2 ′ or the extension hole C10 can be inserted, and the base fitting circular convex portion C1 ′ can be fitted into the anchor bolt insertion hole A1 ′.

  Further, the second washer D has the first washer fitting circular convex portion D1 provided on the back surface of the second washer D in the anchor bolt moving hole C2 ′ or the extension hole C10 in a state where the anchor bolt B is inserted. Can be fitted. Then, the anchor bolt B is inserted into the anchor bolt insertion hole A1 ′ of the pedestal A ′, and the anchor bolt B is inserted into the anchor bolt moving hole C2 ′ or the extension hole C10 of the first washer C ′. In the state where the circular projection C1 'for pedestal fitting is fitted in the anchor bolt insertion hole A1', the anchor bolt B is inserted into the anchor bolt through hole D2 of the second washer D, and the anchor bolt moving hole C2 is inserted. 'Or the first washer fitting circular convex portion D1 can be fitted into the extension hole C10, and then a predetermined nut E is screwed from the tip of the anchor bolt B and tightened, and then the base A is fixed to the anchor bolt B. 'Is fixed.

  Even when the second embodiment is configured as described above, the first washer-fitting circular protrusion formed on the second washer D regardless of the position at which the anchor bolt B is inserted into the anchor bolt insertion hole A1 ′. Since D1 prevents the rotation of the first washer C ′, any movement of the pedestal A ′ can be prevented even if any lateral force acts on the pedestal A ′. Therefore, even if a force is applied to the structure or the like that is integrally combined with the pedestal A ′, the structure or the like can be prevented from shifting.

It is a disassembled perspective view of the anchor bolt fixing device according to the first embodiment of the present invention. It is explanatory drawing which shows the state which has assembled the anchor bolt fixing device which concerns on Example 1 of this invention. It is the schematic seen from the pedestal fitting convex part side of the 1st washer used for the anchor bolt fixing device concerning Example 1 of the present invention. It is the schematic seen from the 1st washer fitting circular convex part side of the 2nd washer used for the anchor bolt fixing device concerning Example 1 of the present invention. It is the schematic seen from the circular convex part side for base fitting of the 1st washer which concerns on Example 2 of this invention. It is a reverse view of FIG. It is the schematic which looked at the state which inserted the 1st washer in the base concerning Example 2 of the present invention from the circular convex part side for base fitting of the 1st washer. In the case where the second washer is not used, the base A in which the circular anchor bolt insertion hole is formed is fitted into the anchor bolt B that is fixed, and the first washer C is fitted into the base. 8A is a view when the anchor bolt B is located at the center of the anchor bolt insertion hole, and FIG. 8B is only about one third of the anchor bolt B from the center of the anchor bolt insertion hole. FIG. 8C is a diagram when the anchor bolt B is eccentric to the left, and FIG. 8C is a diagram when the anchor bolt B is eccentric to the left by about two thirds from the center of the anchor bolt insertion hole. It is a figure when the volt | bolt B has reached the position inscribed in the anchor bolt insertion hole. In the case of using the second washer, the base A in which the circular anchor bolt insertion hole is formed is fitted into the fixed anchor bolt B, and the first washer C is fitted into the base A, and the first washer It is explanatory drawing of the state which inserted the 2nd washer in C, and D1 in the figure is the 1st washer fitting circular convex part of the 2nd washer. FIG. 9A is a view when the anchor bolt B is positioned at the center of the anchor bolt insertion hole, and FIG. 9B is a view where the anchor bolt B is about one third left from the center of the anchor bolt insertion hole. FIG. 9C is a diagram when the anchor bolt B is eccentric to the left by about two thirds from the center of the anchor bolt insertion hole, and FIG. 9D is a diagram when the anchor bolt B is eccentric. It is a figure when reaches the position inscribed in an anchor bolt insertion hole.

Explanation of symbols

P ... Anchor bolt fixing device A ... Base A1 ... Anchor bolt insertion hole B ... Anchor bolt C ... First washer C1 ... Circular projection for base fitting C2 ... Anchor bolt movement Hole C3 ・ ・ Two semicircles C4 ・ ・ Central semicircle C5 ・ ・ Central semicircle C6 ・ ・ Inscribed semicircle C7 ・ ・ Inscribed semicircle C8 ・ ・ Track line C9 ・・ Continuous part D ・ ・ ・ Second washer D1 ・ ・ Circular convex part for fitting first washer D2 ・ ・ Anchor bolt through hole E ・ ・ ・ Nut S ・ ・ ・ Gap A '・ ・ Base A1' ・ For anchor bolt insertion Hole C '·· First washer C1' · Pedestal fitting circular convex portion C2 '· Anchor bolt moving hole C4' · Center semicircle C6 '· Inscribed portion semicircle C10 · Extension hole

Claims (5)

An anchor bolt fixing device comprising a pedestal, a first washer and a second washer,
The pedestal is provided with an anchor bolt insertion hole larger than the diameter of the anchor bolt,
The first washer is provided with a pedestal-fitting circular convex portion that can be fitted into the anchor bolt insertion hole and rotated on the back surface thereof, and the pedestal-fitting circular convex portion has a circular shape for fitting the pedestal. An inner diameter equal to the diameter of the anchor bolt inscribed in the circular fitting portion for fitting the base having a central semicircle having an inner diameter equal to the diameter of the anchor bolt concentric with the convex portion and a chord that is collinear with the chord of the central semicircle And a circle having a diameter equal to the diameter of the anchor bolt while being in contact with a continuous portion of the center semicircle and the inscribed portion semicircle. For anchor bolt movement that is surrounded by a trajectory line formed by a trajectory moved from the central semicircle to the inscribed semicircle in the direction opposite to the arc side of the circle, and through which the anchor bolt can be inserted Holes are provided,
The second washer, on the back surface, fitted to the anchor bolt moving holes, the first washer fitting circular protrusion of diameter equal to the diameter of the anchor bolt is provided, and the anchor bolts can be inserted anchor An anchor bolt fixing device, wherein an anchor bolt through hole having an inner diameter equal to the diameter of the bolt is provided so as to leave at least a part of the first washer fitting circular convex portion.   The anchor bolt fixing device according to claim 1, wherein the anchor bolt insertion hole provided in the pedestal is a circle having the same diameter as the circular protrusion for pedestal fitting. The anchor bolt insertion hole provided in the pedestal is a rounded square whose length and width are the same as the diameter of the circular projection for fitting the base, and the anchor bolt moving hole provided in the first washer 2. The anchor bolt according to claim 1, wherein an extension hole portion having an inner diameter equal to a diameter of the anchor bolt capable of moving the anchor bolt from the bolt moving hole is provided on the outer side of the inscribed semicircular side. Fixing device. A first washer used to fix the anchor bolt,
The first washer is provided with a circular convex portion for base fitting on the back surface thereof, and
The pedestal fitting circular convex portion includes a central semicircle having an inner diameter equal to the diameter of an anchor bolt concentric with the circular convex portion for pedestal fitting, and a string that is collinear with the chord of the central semicircle. While touching the continuous part of two semicircles in which an inscribed part semicircle having an inner diameter equal to the diameter of the anchor bolt inscribed in the joint circular convex part and the central part semicircle and the inscribed part semicircle A shape in which a circle having a diameter equal to the diameter of the anchor bolt is surrounded by a trajectory line formed by a trajectory moving from the central semicircle to the inscribed semicircle in a direction opposite to the arc of the central semicircle A first washer comprising an anchor bolt moving hole through which the anchor bolt can be inserted. A second washer used to fix the anchor bolt,
The second washer is provided on its back surface with a first washer-fitting circular projection having a diameter equal to the diameter of the anchor bolt , and
An anchor bolt through hole having an inner diameter equal to the diameter of the anchor bolt through which the anchor bolt can be inserted is provided, leaving at least a part of the circular protrusion for fitting the first washer.

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