JP2840117B2 - Base mounting structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a base mounting structure for mounting a base on a concrete foundation with anchor bolts.

[Prior Art] In this type of conventional base mounting structure, as shown in FIG. 6, an anchor bolt 3 of a foundation 4 is inserted into a through hole 2 'provided in the base 1, and a screw is inserted into the anchor bolt 3. The combined nut 5 was fixed by tightening. However, the anchor bolts 3 of the foundation 4 are not always erected accurately. If the anchor bolts 3 are not accurate, the positions of the anchor bolts 3 and the positions of the through holes 2 ′ of the base 1 do not coincide with each other. 1 cannot be attached. In order to eliminate this problem, the hole provided in the base 2 is formed as an elliptical hole, and the nut 5 is screwed into the anchor bolt 3 via a seat plate larger than the hole. However, in this case, when the nut is tightened through the seat plate, there is a problem that the seat plate is bent and deformed due to the space formed by the fool holes, and falls into the fool holes.

To solve this problem, the present applicant has previously filed Japanese Patent Application No. 1-165659. As shown in FIG. 7, a spacer plate 6 'is disposed in the fool hole 2 of the base 1 into which the anchor bolt 3 is inserted, and the anchor bolt 3 is inserted through a hole eccentrically provided in the spacer plate 6'. Place the seat plate 7 on the spacer plate 6 ′, and on the seat plate 7, attach the nut 5 to the anchor bolt 3.
Was screwed.

[Problem to be Solved by the Invention] The use of the spacer plate 6 'can prevent the bending of the seat plate 7, but has a problem that the number of parts increases because the separate spacer plate 6' is used.

The present invention has been made in view of the above description, and the object of the present invention is not only to be able to absorb the positional variation of the anchor bolts but also to attach the bolts without bending the seat plate. It is another object of the present invention to provide a base mounting structure in which the spacer can be fitted into the fool hole without reducing the number of parts and without changing the direction of the seat plate.

[Means for Solving the Problems] To achieve the above object, the base mounting structure of the present invention comprises:
The anchor bolt 3 erected on the foundation 4 is attached to the fool hole 2 of the base 1.
The spacer 6 disposed on the back surface of the seat plate 7 having a size larger than the fool hole 2 is fitted into the fool hole 2, and the spacer 6 and the seat plate 7 are bolted to be eccentric with respect to the center of the spacer 6. The insertion hole 8 is provided, and the spacer 6 is mounted on the seat plate 7 so that the spacer 6 is rotatable about the bolt insertion hole 8 with respect to the seat plate 7, and the anchor bolt 3 is inserted into the bolt insertion hole 8. And the nut 5 is screwed onto the anchor bolt 3 on the seat plate 7.

An anchor bolt 3 erected on the foundation 4 is inserted into the fool hole 2 of the base 1, and a spacer 6 formed by recessing a recess 13 in a seat plate 7 larger than the fool hole 2 is fitted into the fool hole 2. A bolt insertion slot 9 is provided in the seat plate 7 integrally provided with the spacer 6, the anchor bolt 3 is inserted into the bolt insertion slot 9, and the nut 5 is attached to the anchor bolt 3 on the seat plate 7.
It is also preferable to be characterized by being screwed together.

[Operation] Since the anchor bolt 3 is inserted through the fool hole 2 of the base 1, the variation in the position of the anchor bolt 3 can be absorbed and attached. Bending and the like can be prevented. Since the spacer 6 is mounted on the seat plate 7, the number of components can be reduced. In the case where the spacer 6 is rotatably mounted on the back surface of the seat plate 7, the spacer 6 can be rotated with respect to the seat plate 7 so that the spacer 6 is aligned with the hole 2 and the spacer 6 can be fitted into the hole.

Further, in the case where the recess 6 is formed in the seat plate 7 having a size larger than the fool hole and the spacer 6 is formed, the spacer 6 and the seat plate 7 can be completely integrated with each other. The spacer 6 can be fitted into the stupid hole 2 by changing the position at which the anchor bolt 3 is inserted into the bolt insertion elongated hole 9 because it is inserted into the bolt insertion elongated hole 9.

[Example] The foundation 4 is formed of concrete, and the anchor bolt 3 is protruded upward from the upper surface. Base 1 is horizontal 1a and vertical
1b form an L-shape. An oblong hole 2 is drilled in the horizontal piece 1a of the base 1 so as to correspond to the position of the anchor bolt 3. The base 1 is placed on the upper surface of the foundation 4 and the anchor bolt 3 is inserted into the hole 2. It has been inserted. The seat plate 7 is formed in a rectangular plate shape as shown in FIG. 3, and a disc-shaped spacer 6 is mounted on the back surface of the seat plate 7. A bolt insertion hole 8 is formed so as to be eccentric with respect to the center of the disc-shaped spacer 6 and penetrate through the spacer 6 and the seat plate 7, and the spacer 6 is centered on the bolt insertion hole 8 with respect to the seat plate 7. It is mounted so that it can rotate freely. To make the spacer 6 freely rotatable with respect to the seat plate 7, a cylindrical portion 7 a extending from the bolt insertion hole 8 of the seat plate 7 is inserted into the light-transmitting 10 of the spacer 6 to form a mating portion 11. It is. The seat plate 7 is larger than the size of the elliptical hole 3, and is at least larger than the minor diameter of the hole 3. The spacer 6 is slightly smaller than the minor diameter of the fool hole 3. The seat plate 7 is disposed on the horizontal piece 1a of the base 1, and the anchor bolt 3 is inserted into the bolt insertion hole 8,
By rotating the spacer 6 with the seat plate 7 oriented in a predetermined direction, the spacer 6 is aligned with the fool hole 2 so that the spacer 6
The fool hole 2 is fitted. With the seat plate 7 placed on the anchor bolt 3 through a washer 12 such as a spring washer.
The seat plate 7 is pressed and fixed by screwing and tightening the nut 5. At this time, since the spacer 6 is provided on the back of the seat plate 7, the seat plate 7 can be tightened with a constant force without bending. In the case of the present embodiment, the seat plate 7 is rectangular, but may be disk-shaped, oval, or another shape.

FIG. 4 shows another embodiment. In the case of the present embodiment, the spacer 6 is formed by recessing the disc-shaped recess 13 in the seat plate 7, and the bolt insertion slot 9 is formed in this portion.
Is provided. By mounting the seat plate 7 on the horizontal piece 1a of the base 1 and inserting the anchor bolt 3 into the bolt insertion slot 9, and moving the bolt insertion slot 9 with respect to the anchor bolt 3,
The spacer 6 is fitted to the fool hole 2 and fitted, and the nut 5 is tightened in the same manner as in the above embodiment. In the case of the embodiment shown in FIG. 5 (a), the oval seat plate 5 is provided with the spacer 6 by recessing the oval recess 14 and in the case of the embodiment shown in FIG. A large number of recesses 15 are provided in the oval seat plate 5 to provide spacers 6. In the case of the embodiment shown in FIGS. 5 (a) and 5 (b), it can be mounted similarly to the embodiment shown in FIG.

[Effect of the Invention] In the present invention, as described above, an anchor bolt erected on a foundation is inserted into a stupid hole of a base, and a nut is screwed to the anchor bolt via a seat plate to attach the base. Even if the accuracy of the mounting position varies, it can be absorbed by the fool hole and the base can be mounted, as well as the spacer on the back of the seat plate is fitted into the fool hole, so the spacer when tightening the nut The seat plate can be prevented from bending and can be securely attached with a fixed tightening force.In addition, since the spacer is provided integrally on the back of the seat plate, the number of parts increases even if there is a spacer In addition, the number of parts can be reduced, and a bolt insertion hole is provided in the spacer and the seat plate so as to be eccentric with respect to the center of the spacer, and the spacer is seated around the bolt insertion hole. Since the spacer is mounted on the seat plate so that it can rotate freely with respect to the plate, only the spacer can be rotated with the seat plate facing the predetermined direction and the spacer can be aligned with the fool hole. The spacer can be fitted into the fool hole without changing the direction of the plate.

In the invention according to claim 2 of the present invention, since the anchor bolt is inserted through the bolt insertion slot, the bolt insertion slot is moved relative to the anchor bolt without changing the direction of the seat plate. And the spacer can be fitted to the fool hole, and since the spacer is formed by forming a recess in the seat plate, an integral body of the spacer and the seat plate can be easily and inexpensively obtained. In addition to the above, the weight can be reduced as compared with the case where the spacer, which is a separate component, is integrated with the seat plate.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of one embodiment of the present invention, and FIG.
FIG. 3B is a cross-sectional view and a plan view of a main part of the above, and FIG.
FIG. 4B is a perspective view and a sectional view showing a seat plate and a spacer according to the embodiment, and FIG. 4A is a sectional view of a main part of another embodiment according to the embodiment.
FIGS. 4 (b) and (c) are a plan view and a sectional view showing the seat plate and the spacer, respectively, and FIGS. 5 (a) and (b) are perspective views of another embodiment of the seat plate according to the sixth embodiment. 6A is a cross-sectional view of the conventional example, FIG. 6B is a perspective view of the base of the conventional example, FIG. 7A is a cross-sectional view of the conventional example, and FIG. Fig. 2 is an exploded perspective view of a), wherein 1 is a base, 2 is a pit, 3 is an anchor bolt, 4 is a foundation, 5 is a nut, 6 is a spacer, 7 is a seat plate,
8 is a bolt insertion hole, and 9 is a bolt insertion long hole.

Claims (2)

(57) [Claims] 1. An anchor bolt erected on a foundation is inserted into a fool hole of a base, and a spacer arranged on the back surface of a seat plate having a size larger than the fool hole is fitted into the fool hole. A bolt insertion hole is provided in the spacer and the seat plate so as to be eccentric, and the spacer is mounted on the seat plate so that the spacer can be freely rotated with respect to the seat plate around the bolt insertion hole, and the anchor bolt is inserted into the bolt insertion hole. A base mounting structure characterized in that a nut is screwed into an anchor bolt on a seat plate by passing through a base plate. 2. An anchor bolt erected on a foundation is inserted into a fool hole in a base, and a spacer formed by recessing a recess in a seat plate larger than the fool hole is fitted into the fool hole. A base mounting structure, wherein a bolt insertion slot is provided in an integrally provided seat plate, an anchor bolt is inserted in the bolt insertion slot, and a nut is screwed to the anchor bolt on the seat plate.