JP2007291760A - Bar-shaped member fastening device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bar-shaped member fastening device for firmly fastening an object member to a bar-shaped member by being interposed between the object member having a circular hole and the bar-shaped member arranged in the circular hole by leaving play. <P>SOLUTION: This bar-shaped member fastening device has a synthetic resin outer cylinder 12 and an inner cylinder 14 usable for fastening a part between a sill 2 of a wooden house and an anchor bolt 6 erected from a foundation 4 via a circular hole 8 of the sill 2, and installed for filling a gap between the inner peripheral surface of the circular hole 8 and the anchor bolt 6 in spite of being eccentric in the anchor bolt 6 with respect to the circular hole 8. The outer cylinder 12 and the inner cylinder 14 can expand and contract their diameters. The outer cylinder 12 has a female tapered surface 30 on its inner peripheral surface for expanding and contracting the diameters of the outer cylinder 12 and the inner cylinder 14 by engaged with the outer peripheral surface of the inner cylinder 14. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is applied to a rod-shaped member arranged with play in a circular hole of the target member, and is interposed between the target member and the rod-shaped member so as to fill the play, so that the target member and the rod-shaped member It is related with the fastening device which fastens mutually.

  For example, a base of a wooden house can be considered as the target member having a circular hole. In this base, a plurality of circular holes are formed penetrating up and down, and these circular holes are arranged at predetermined intervals in the longitudinal direction of the base. Such a circular hole is used for inserting an anchor bolt as a rod-like member standing upright from a concrete foundation, and a fastening bolt is attached to the upper end of the anchor bolt, and the fastening bolt is placed between the fastening bolt and the foundation. The base can be fixed to the foundation by sandwiching the base via the washer.

  The anchor bolts described above should be embedded in the foundation so that the anchor bolts are arranged at an arrangement pitch corresponding to the interval between the circular holes. However, when the concrete is driven when forming the foundation, the anchor bolts are driven. Due to the pressure, the anchor bolt may be displaced from its normal position. Such misalignment not only makes the spacing between the anchor bolts non-uniform, but also disturbs the arrangement of the anchor bolts that should be placed in the same line. For this reason, the circular holes in the base have an inner diameter sufficiently larger than the diameter of the anchor bolt, and the difference between the inner diameter of these circular holes and the outer diameter of the anchor bolt absorbs the displacement of the anchor bolt. I am doing so.

However, even if the foundation is clamped and fixed to the foundation with a tightening nut, there is a gap between the inner peripheral surface of the circular hole and the anchor bolt. There is a risk of horizontal movement.
Under these circumstances, a fine adjustment device that fills the gap in the circular hole in the base plate is known, and this fine adjustment device is fitted in the adjustment washer that fits in the circular hole in the base plate. The sliding washer is inserted into the anchor bolt at an eccentric position, and the sliding washer is arranged eccentric with respect to the adjustment washer (Patent Document 1).

According to the fine adjustment device described above, even if the anchor bolt is eccentric through the circular hole of the base plate, this eccentricity can be absorbed by the fine adjustment device, and the gap between the anchor bolt and the inner peripheral surface of the circular hole is Can also be filled by a fine-tuning device.
Japanese Laid-Open Patent Publication No.2-13642

Since the configuration of the fine adjustment device described above is merely a combination of large and small washers, no anchor bolt is fixed to the base plate. Therefore, if the tightening nut is loosened, the base plate may move relative to the axial direction of the anchor bolt, that is, the vertical direction.
The present invention has been made based on the above-described circumstances, and its object is to provide a rod-shaped member fastening device capable of firmly fastening a target member and a rod-shaped member to each other in addition to the function of the fine adjustment device described above. May provide.

  In order to achieve the above-described object, the rod-shaped member fastening device of the present invention has an outer peripheral surface that can be tightly fitted in the circular hole of the target member, and has a fitting hole having a larger diameter than the rod-shaped member at an eccentric position. Including an outer cylinder, an inner cylinder that can be disposed in the fitting hole of the outer cylinder, and has a through hole that allows the rod-shaped member to pass through in an eccentric position; and a notch formed in each of the outer cylinder and the inner cylinder; When the inner cylinder is disposed in the fitting hole of the outer cylinder and the allowing means for allowing the outer cylinder and the inner cylinder to expand and contract, a wedge is formed between the outer cylinder and the inner cylinder. And a wedge means for expanding the outer diameter of the outer cylinder and reducing the diameter of the inner cylinder (claim 1).

According to the fastening device described above, when the outer cylinder and the inner cylinder are arranged in the circular hole of the target member with the bar-shaped member penetrating the through hole of the inner cylinder, the rod-shaped member is located with respect to the circular hole of the target member. Even in an eccentric state, such eccentricity is absorbed by adjusting the position of the fitting hole of the outer cylinder with respect to the circular hole and the position of the through hole of the inner cylinder with respect to the fitting hole.
When the inner cylinder is assembled in the outer cylinder, the wedge of the wedge means expands the outer diameter of the outer cylinder and presses the outer peripheral surface of the outer cylinder against the inner peripheral surface of the circular hole in the target member, while the inner cylinder The diameter of the cylinder is reduced and the inner circumferential surface of the through hole in the inner cylinder is pressed against the outer circumferential surface of the rod-shaped member, whereby the target member and the rod-shaped member are fastened together via the outer cylinder and the inner cylinder.

The outer cylinder and the inner cylinder described above can be formed of an elastically deformable synthetic resin.
When the fastening device is composed only of the outer cylinder and the inner cylinder, the inner cylinder has an outer surface that is in close contact with the inner peripheral surface of the fitting hole when inserted into the fitting hole of the outer cylinder. The wedge is formed between the inner surface of the fitting hole and the outer surface of the inner cylinder. Specifically, when viewed in the insertion direction of the inner cylinder, the wedge includes a female tapered surface that is formed at the inner end of the fitting hole and engages with the insertion tip of the inner cylinder (Claim 4). Alternatively, it includes a female tapered surface that forms the inner peripheral surface of the fitting hole and a male tapered surface that forms the outer peripheral surface of the inner cylinder.

On the other hand, the above-mentioned permissible means includes slits formed on the outer peripheral surfaces of the outer cylinder and the inner cylinder as the notches, respectively, and these slits extend over the entire axial length of the corresponding cylinder and are fitted into the fitting hole and the through hole. (Claim 6). In this case, it is desirable that the slit is disposed at a position where the thickness in the radial direction of the cylinder is the smallest when viewed in the circumferential direction of the corresponding cylinder.
The permissive means may further include, as a notch, longitudinal grooves formed in the inner peripheral surfaces of the fitting hole and the through hole, respectively, and these longitudinal grooves extend over the entire axial length of the corresponding cylinder and are slits. Are spaced apart in the diameter direction of the cylinder (claim 8). Furthermore, the vertical groove has a bottom portion located outside as viewed in the radial direction of the corresponding cylinder and is expanded in an arc shape when viewed in cross section.

Both the slit and the longitudinal groove described above allow the diameter of the outer cylinder and the inner cylinder to expand and contract.
Further, the longitudinal groove can have a triangular shape that tapers toward the outer peripheral surface of the cylinder as viewed in the cross section of the corresponding cylinder, and in this case, the permissive means is connected to the outer peripheral surface of the corresponding cylinder. It further includes an axial recess formed to reduce the wall thickness with the bottom of the flutes, which cooperates with the flutes to form a self hinge that allows the slit to expand and contract (claims). Item 10).

  If the above-described self-hinge is formed on the outer cylinder and the inner cylinder, the outer cylinder and the inner cylinder are each composed of a half-circular portion extending from the self-hinge to the slits on both sides in the circumferential direction. It can be opened and closed in a direction that is close to and away from the center. Therefore, when the rod-shaped member protrudes from the circular hole, the outer cylinder and the inner cylinder can widen the slit so that the rod-shaped member can be accessed from the side.

  The above-mentioned target member is a wooden base installed on a concrete foundation for a wooden house, and in this case, the rod-shaped member is an anchor bolt having a lower end embedded in the foundation (claim 11).

  Even if the rod-shaped member is eccentric with respect to the circular hole of the target member, the fastening device for the rod-shaped member according to claims 1 to 11 fills a gap between the circular hole and the rod-shaped member regardless of the eccentricity, and the target member and The rod-shaped members can be firmly fastened to each other.

FIG. 1 shows a fastening device for fastening a wooden base 2 of a wooden house to a concrete base 4. In this case, the base 2 is a target member, and anchor bolts 6 erected from the base 4 are rod-shaped. It becomes a member.
The anchor bolts 6 are arranged at a predetermined pitch in the longitudinal direction of the base 2, while circular holes 8 are formed in the base 2 so as to penetrate in the vertical direction. These circular holes 8 are used for inserting the anchor bolts 6, and are therefore formed in the base 2 at the same pitch as the anchor bolts 6.

As is clear from FIG. 1, the circular hole 8 is sufficiently larger than the diameter of the anchor bolt 6, and the anchor bolt 6 passes through the corresponding circular hole 8 even if there is a slight deviation in the distance between the anchor bolts 6. Can do.
A fastening device 10 is mounted around the anchor bolt 6 in the circular hole 8. The fastening device 10 includes an outer cylinder 12 and an inner cylinder 14, and both the outer cylinder 12 and the inner cylinder 14 are made of an elastically deformable synthetic resin such as polycarbonate.

Further, the fastening device 10 includes a tightening nut 18 attached to the upper end portion of the anchor bolt 6 together with a washer 16. The tightening nut 18 is disposed between the washer 16 and the base 4 between the outer cylinder 12 and the inner cylinder 14. The base 2 is sandwiched together with the base 2 and the base 2 is fastened to the foundation 4.
As apparent from FIG. 2, the outer cylinder 12 and the inner cylinder 14 completely fill the gap existing between the inner peripheral surface of the circular hole 8 and the anchor bolt 6, and in order to realize this, the outer cylinder 12. Is formed with a fitting hole 20 for fitting the inner cylinder 14, and the fitting hole 20 is positioned eccentrically. The inner cylinder 14 is formed with a through hole 22 for allowing the anchor bolt 6 to pass therethrough, and the through hole 22 is also positioned eccentrically. The size and amount of eccentricity of the fitting hole 20 and the amount of eccentricity of the through-hole 22 are adjusted so that the anchor bolt 6 is positioned in any one of the circular holes 8 by adjusting the rotational posture of the outer cylinder 12 and the inner cylinder 14. 2, the inner and outer peripheral surfaces of the outer cylinder 12 are the outer periphery of the inner cylinder 14 with the anchor bolt 6 passing through the through hole 22 of the inner cylinder 14 disposed in the circular hole 8 as shown in FIG. 2. The surface and the inner peripheral surface of the circular hole 8 are set so as to be able to contact each other.

Therefore, as shown in FIG. 3, the anchor bolt 6 is displaced, the intervals P ₁ , P ₂ , P ₃ ... Between the anchor bolts 6 are not uniform, and the anchor bolts 6 are the same. Even if they are not arranged on the line, as long as the anchor bolt 6 is present in the circular hole 8 of the base 2, the combination of the outer cylinder 12 and the inner cylinder 14 described above is the anchor bolt 6 and the inner peripheral surface of the circular hole 8. The gap between the base 2 and the foundation 4 can be reliably prevented from being horizontally moved.

4 and 5 show the first embodiment of the outer cylinder 12 and the inner cylinder 14 in detail.
First, the outer cylinder 12 shown in FIG. 4 has a flange 24 on the outer periphery of the upper end, and the lower surface of the flange 24 has a tapered shape that tapers toward the lower end of the outer cylinder 12. Further, a chamfer 26 is formed on the outer peripheral edge of the lower end of the outer cylinder 12.
The inner peripheral surface of the fitting hole 20 of the outer cylinder 12 has a female tapered receiving surface 28 on the periphery of the upper end thereof and a female tapered surface 30 on the lower end portion thereof. Unlike the receiving surface 28, the male tapered surface 30 gradually decreases the inner diameter of the fitting hole 20 toward the lower end of the outer cylinder 12. Note that the outer diameter of the outer cylinder 12 substantially matches the inner diameter of the circular hole 8 in the base 2.

A slit 32 as a notch is formed on the outer peripheral surface of the outer cylinder 12. The slit 32 extends over the entire length in the axial direction of the outer cylinder 12 and continues into the fitting hole 20. More specifically, as is clear from FIG. 4B, the slit 32 is positioned at the position where the thickness of the outer cylinder 12 is the thinnest in the cross section of the outer cylinder 12.
A vertical groove 34 is further formed as another notch on the inner peripheral surface of the fitting hole 20, and this vertical groove 34 also extends over the entire length in the axial direction of the outer cylinder 12, similarly to the slit 32. The vertical groove 34 is separated from the slit 32 in the diameter direction of the fitting hole 20, and the depth reaches the vicinity of the outer peripheral surface of the outer cylinder 12. As apparent from FIG. 2B, the bottom of the vertical groove 34 is not arcuate when viewed in cross section, and expands larger than the groove width of the vertical groove 34. The groove width of the longitudinal groove 34 is narrower than the slit width of the slit 32.

The slits 32 and the vertical grooves 34 described above constitute a permitting means that allows the diameter of the outer cylinder 12 to expand and contract.
Furthermore, a pair of pinch holes 36 are formed in the upper surface of the outer cylinder 12 over a predetermined depth, and these pinches 36 are respectively positioned on both sides of the vertical groove 34 so as to sandwich the vertical groove 34 therebetween.
On the other hand, the inner cylinder 14 shown in FIG. 5 has a flange 38 similar to the flange 24 described above on the outer periphery of the upper end, and the flange 38 has a size that matches the receiving surface 28 of the outer cylinder 12 described above. In addition, a male taper surface 40 connected to the lower side of the flange 38 is formed on the outer peripheral surface of the inner cylinder 14 over a predetermined length, and the male taper surface 40 has an outer diameter of the inner cylinder 14 at the lower end of the inner cylinder 14. Gradually decrease toward. Further, a chamfer 41 is also provided on the outer periphery of the lower end of the inner cylinder 14.

The inner cylinder 14 includes a slit 42, a vertical groove 44, and a pair of pinch holes 46 similar to the slit 32, the vertical groove 34, and the pair of pinch holes 36 of the outer cylinder 12 described above. Constitutes an accepting means for allowing the diameter of the inner cylinder 14 to be expanded or reduced. Furthermore, the outer diameter D1 of the bottom end of the inner cylinder 14 substantially conforms to the inner diameter _{D 2} of the receiving surface 28 and the fitting hole 20 with the exception of the female tapered surface 30 (see FIG. 2 (c)). The through hole 22 of the inner cylinder 14 has an inner diameter substantially the same as the outer diameter of the anchor bolt 6, and the axial length thereof is the same as that of the outer cylinder 12 and corresponds to the thickness of the base 2.

  In order to incorporate the above-described outer cylinder 12 and inner cylinder 14 into the circular hole 8 of the base 2, first, the outer cylinder 12 is disposed so as to surround the anchor bolt 6 in the circular hole 8 as shown in FIG. 6. At this time, the flange 24 of the outer cylinder 12 matches the female tapered receiving surface 8a formed at the upper edge of the circular hole 8, and is received by the receiving surface 8a. Therefore, the upper surface of the outer cylinder 12 is flush with the upper surface of the base 2.

Thereafter, while inserting the anchor bolt 6 into the through hole 22 of the inner cylinder 14, the rotational angle position of the outer cylinder 12 is adjusted so that the inner cylinder 14 and the fitting hole 20 of the outer cylinder 12 are aligned in the vertical direction. After the adjustment, the inner cylinder 14 is inserted into the fitting hole 20 of the outer cylinder 12 along the anchor bolt 6 until its lower end comes into contact with the upper surface of the base 2.
In this state, as shown in FIG. 7, the flange 38 of the inner cylinder 14 matches the receiving surface 28 of the outer cylinder 12 and is received by the receiving surface 28, and the upper surface of the inner cylinder 14 is the base together with the upper surface of the outer cylinder 12. 2 is flush with the upper surface.

  After the lower end portion of the inner cylinder 14 is engaged with the female tapered surface 30 of the outer cylinder 12 in the process of inserting the inner cylinder 14 described above, the wedge action of the female tapered surface 30 and the slit 32 and the longitudinal groove 34 are formed. Due to the presence, as shown by the arrows in FIGS. 7 and 8, the insertion of the inner cylinder 14 applies a force for expanding the diameter of the outer cylinder 12 to the outer cylinder 12, and the outer peripheral surface of the outer cylinder 12 is placed inside the circular hole 8. Press firmly against the circumference. On the other hand, the outer cylinder 12 receives a reaction force from the inner peripheral surface of the circular hole 8, and the inner cylinder 14 is formed with slits 42 and vertical grooves 44 like the outer cylinder 12. The applied reaction force reduces the diameter of the inner cylinder 14 as indicated by the arrows in FIGS. 7 and 8, and the inner peripheral surface of the through hole 22 in the inner cylinder 14 is also firmly pressed against the outer peripheral surface of the anchor bolt 6. As a result, the anchor bolt 6 and the base 2 are firmly fastened to each other in the radial direction of the anchor bolt 6. 8 shows the outer cylinder 12 and the inner cylinder 14 in a state where the slits 32 and 42 of the outer cylinder 12 and the inner cylinder 14 are aligned with each other, but this is for convenience of drawing.

As described above, since the base 2 is made of wood, the inner diameter of the circular hole 8 is reduced when the base 2 is dried. Such a reduced diameter of the circular hole 8 further increases the fastening force in the radial direction of the anchor bolt 6 with respect to the anchor bolt 6 and the base 2.
On the other hand, since the upper surfaces of the outer cylinder 12 and the inner cylinder 14 are flush with the upper surface of the base 2, the washer 16 is fixed between the base 2, the outer cylinder 12 and the base 4 by tightening the tightening nut 18 described above. The inner cylinder 14 can be sandwiched at the same time, and the base 2, the outer cylinder 12, and the inner cylinder 14 are also fastened to the foundation 4 in the axial direction of the anchor bolt 6. Therefore, the base 2 does not move relative to the foundation 4 in the vertical direction. Even if the tightening nut 18 is loosened, the outer cylinder 12 and the inner cylinder 14 are firmly fastened to the base 2 and the anchor bolt 6, so that the base 2 is moved relative to the base 4 in the vertical direction. Can be reliably prevented.

FIG. 9 specifically shows a washer 16 suitable for the outer cylinder 12 and the inner cylinder 14.
The washer 16 shown in FIG. 9 has an octagonal shape in which four corners of a square plate material are cut off, but one corner is cut off larger than the other. The washer 16 is formed with an insertion hole 16a through which the anchor bolt 6 is inserted. The insertion hole 16a is eccentrically positioned at the one corner side. The insertion hole 16a is preferably a tapered hole.

According to the washer 16 described above, as is clear from FIGS. 10A to 10C, the region of the washer 16 can be obtained regardless of which direction the anchor bolt 6 is eccentric in the circular hole 8 of the base 2. The circular hole 8 can be accommodated in the inside, and the size of the circular hole 8 can be minimized, and the base 2, the outer cylinder 12, and the inner cylinder 4 can be effectively tightened to the foundation 4.
FIG.11 and FIG.12 shows the fastening device 10 outer cylinder 12 and the inner cylinder 14 in 2nd Example, respectively.

In the description of the second embodiment and the subsequent embodiments, members and portions that exhibit the same functions as those of the first embodiment and the previous embodiments are denoted by the same reference numerals. These descriptions are omitted.
In the case of the second embodiment, the entire inner peripheral surface of the fitting hole 20 in the outer cylinder 12 is formed as a female tapered surface 48, and the entire outer peripheral surface of the inner cylinder 14 is formed as a male tapered surface 50. ing. As shown in FIG. 13, when the inner cylinder 14 is inserted into the fitting hole 20 of the outer cylinder 12, the female tapered surface 48 and the male tapered surface 50 of the outer cylinder 12 and the inner cylinder 14 are engaged with each other. The wedge action is exerted, and a strong fastening force along the radial direction of the anchor bolt 6 is applied to both the base 2 and the anchor bolt 6 as in the case of the first embodiment.

As shown in FIG. 14, the longitudinal groove 44 of the inner cylinder 14 may have a constant groove width, and the same applies to the outer cylinder 12.
Further, as shown in FIG. 15, when the base 2 has a thickness larger than the protruding height of the anchor bolt 6, a counterbore hole 52 is formed in the upper part of the circular hole 8, and the counterbore hole 52 is formed. Is larger than the washer 16. In such a case, the base 2 can be fastened to the foundation 4 without causing the anchor bolt 6, the washer 16 and the fastening nut 18 to protrude from the upper surface of the base 2.

FIG. 16 shows a target member in which a wall 54 is pre-coupled to the base 2 and allows access to the circular hole 8 and the anchor bolt 6 at a portion of the wall 54 corresponding to the circular hole 8 of the base 2. The fastening apparatus 10 of the 3rd Example suitable for the object member in which the opening 56 is formed is shown.
The outer cylinder 12 of the third embodiment is shown in FIG. In this case, the vertical groove 34 of the outer cylinder 12 has a triangular shape that tapers toward the outer peripheral surface of the outer cylinder 12 when viewed in cross section, and a portion corresponding to the vertical groove 34 is formed on the outer peripheral surface of the outer cylinder 12. A recess 58 is formed in the bottom. The recess 58 extends over the entire length of the outer cylinder 12 in the axial direction, and reduces the thickness of the outer cylinder 12 between the bottom of the vertical groove 34. That is, the recess 58 forms a self hinge 60 of the outer cylinder 12 in cooperation with the longitudinal groove 34.

  If such a self hinge 60 is provided in the outer cylinder 12, the outer cylinder 12 has a pair of openable and closable half-circular portions extending from the self hinge 60 to the slit 32 on both sides of the self hinge 60. Therefore, as shown in FIG. 17 (c), the groove width of the slit 32 is expanded beyond the diameter of the anchor bolt 6 by opening the pair of semicircular portions in a direction away from each other.

18, the inner cylinder 14 of the third embodiment also has a longitudinal groove 44 that is triangular when viewed in cross section, and has a recess 58 and a self-hinge 60 as in the case of the outer cylinder 12. Therefore, the inner cylinder 14 can also expand the groove width of the slit 42 to be larger than the diameter of the anchor bolt 6 as shown in FIG.
If each of the outer cylinder 12 and the inner cylinder 14 is provided with a self hinge 60, as shown in FIG. 19, the distance between the upper end of the anchor bolt 6 and the ceiling wall of the opening 56 described above is Even when the total length of the inner cylinder 14 is less than the outer cylinder 12, the outer cylinder 12 and the inner cylinder 14 greatly expand the slits 32 and 42, so that the anchor bolt 6 from the side as shown by the arrow in FIG. Access is possible, and it can be mounted in the circular hole 8 of the base 2 without interfering with the anchor bolt 6.

As shown in FIG. 20, the outer cylinder 12 may have a longitudinal groove 34 on its outer peripheral surface. In this case, the longitudinal groove 34 is displaced in the circumferential direction of the outer cylinder 12 as shown in FIG. It may be divided up and down in the state.
As shown in FIG. 22, the female tapered surface 48 of the outer cylinder 12 and the male tapered surface 50 of the inner cylinder 14 may be upside down, unlike the case of the second embodiment. As shown in FIG. 23, the lower portion of the slit 32 of the outer cylinder 12 may be greatly expanded.

As shown in FIG. 24, the inner cylinder 14 can have two types of through holes 22a and 22b having different diameters (a), and the through holes 22a and 22b partially overlap each other. It may be (b).
As shown in FIG. 25, the fastening device 10 can further include two large and small intermediate cylinders 62 and 64 that are allowed to expand and contract in diameter between the outer cylinder 12 and the inner cylinder 14. The intermediate cylinder 62 having a diameter can have a through hole 22 similar to the inner cylinder 14.

  In the case of the fastening device 10 in FIG. 25, the intermediate cylinder 62 becomes the second inner cylinder with respect to the outer cylinder 12, and the intermediate cylinder 64 becomes the second outer cylinder with respect to the inner cylinder 14. Any of the through holes 22 can be used to penetrate the anchor bolt 6. And the wedge for clamping the outer cylinder 12 and the inner cylinder 14 in the radial direction should just be provided between the arbitrary cylinders adjacent to radial direction.

  In the fastening device 10 of the above-described embodiment, the base 2 and the anchor bolt 6 of the wooden house are the target members and rod-like members, but the fastening device 10 of the present invention is not limited to the base 2 and the anchor bolt 6, and various The present invention can be applied to a combination of a target member and a rod-shaped member.

It is the longitudinal cross-sectional view which showed roughly the fastening device for fastening the base of a wooden house to the anchor bolt of a foundation. It is a cross-sectional view of the fastening device of FIG. It is a figure for demonstrating the basic function of the fastening apparatus of FIG.1 and FIG.2. The outer cylinder in the fastening apparatus of 1st Example is shown, (a) is a side view, (b) is a top view, (c) is sectional drawing in alignment with the cc line in (b), (d) is ( It is sectional drawing which follows the dd line in b). The inner cylinder in the fastening apparatus of 1st Example is shown, (a) is a side view, (b) is a top view, (c) is sectional drawing in alignment with the cc line in (b), (d) is ( It is sectional drawing which follows the dd line in b). It is the figure which showed the state just before the outer cylinder and inner cylinder of FIG.4 and FIG.5 being assembled | attached. It is a figure which shows the state in which the outer cylinder and inner cylinder of FIG.4 and FIG.5 were assembled | attached. It is a top view of the outer cylinder and inner cylinder shown in FIG. It is the top view which showed an example of the washer. It is a figure which shows the function of a washer, (a)-(c) shows the mutually different positional relationship between the circular hole of a base, and a washer. The outer cylinder in the fastening apparatus of 2nd Example is shown, (a) is a side view which fractures | ruptures and shows the right half, (b) is a top view. The inner cylinder in the fastening apparatus of 2nd Example is shown, (a) is a side view which fractures | ruptures and shows the right half, (b) is a top view. It is a figure which shows the assembly | attachment of the outer cylinder and inner cylinder of 2nd Example. It is the top view which showed the modification of the inner cylinder. It is sectional drawing which showed the modification of the foundation. It is a figure which shows the target object to which the fastening apparatus of 3rd Example is applied, (a) is sectional drawing, (b) is a side view. The outer cylinder of the fastening apparatus in 3rd Example is shown, (a) is a top view, (b) is sectional drawing in alignment with the bb line in (a), (c) is a top view in an expanded state, (D) is a side view in an expanded state. The inner cylinder of the fastening apparatus in 3rd Example is shown, (a) is a top view, (b) is sectional drawing in alignment with the bb line in (a), (c) is a top view in an expanded state, (D) is a side view in an expanded state. It is a figure for demonstrating the assembly | attachment of the outer cylinder and inner cylinder of FIG.17 and FIG.18. It is the top view which showed the outer cylinder of the modification. It is the side view which showed the outer cylinder of the modification. It is the side view which showed the fastening apparatus of the modification. It is the side which cut and showed only the right half of the fastening device of a modification. The inner cylinder of the modification which has two through-holes from which a diameter differs is shown, (a) shows the case where a through-hole has isolate | separated, (b) shows the case where a through-hole partially overlaps, respectively. In addition to an outer cylinder and an inner cylinder, the fastening device of the modification containing two large and small intermediate cylinders and a 2nd through-hole is shown, (a)-(d) shows the example of arrangement | positioning of a mutually different through-hole, respectively.

Explanation of symbols

2 Foundation (target material)
4 Foundation 6 Anchor bolt (bar-shaped member)
8 circular hole 12 outer cylinder 14 inner cylinder 30 female taper surface (wedge)
32 Slit (Notch)
34 Longitudinal groove (notch)
48 Female taper surface (wedge)
50 Male taper surface (wedge)
58 dent 60 self hinge

Claims (11)

A fastening device that is disposed between a circular hole of a target member and a rod-shaped member that is arranged with play in the circular hole and fastens the target member and the rod-shaped member to each other,
An outer cylinder having an outer peripheral surface that can be tightly fitted in the circular hole, and having a fitting hole having a larger diameter than the rod-shaped member at an eccentric position;
An inner cylinder that can be disposed in the fitting hole of the outer cylinder, and has a through hole that penetrates the rod-shaped member in an eccentric position;
Including a notch formed in each of the outer cylinder and the inner cylinder, and allowing means for allowing expansion and contraction of the diameters of the outer cylinder and the inner cylinder;
When the inner cylinder is disposed in the fitting hole of the outer cylinder, a wedge is formed between the outer cylinder and the inner cylinder, and the outer diameter of the outer cylinder is increased by the wedge. A rod-like member fastening device comprising wedge means for reducing the diameter of the inner cylinder.   The said outer cylinder and the said inner cylinder are formed from the synthetic resin which can be elastically deformed, The fastening apparatus of the rod-shaped member of Claim 1 characterized by the above-mentioned.   When the inner cylinder is inserted into the fitting hole, the inner cylinder has an outer surface that is in close contact with the inner peripheral surface of the fitting hole, and the wedge is between the inner surface of the fitting hole and the outer surface of the inner cylinder. The rod-shaped member fastening device according to claim 1, wherein the fastening device is formed as described above.   The said wedge is formed in the inner end part of the said fitting hole, seeing in the insertion direction of the said inner cylinder, The female taper surface engaged with the insertion front-end | tip part of the said inner cylinder is characterized by the above-mentioned. The fastening apparatus of the rod-shaped member of description.   The said wedge includes the female taper surface which forms the inner peripheral surface of the said fitting hole, and the male taper surface which forms the outer peripheral surface of the said inner cylinder, The fastening of the rod-shaped member of Claim 3 characterized by the above-mentioned. apparatus.   The permissive means includes, as the notches, slits respectively formed on the outer peripheral surfaces of the outer cylinder and the inner cylinder, and the slits extend over the entire axial length of the corresponding cylinder, and the fitting hole and the through hole. The bar-shaped member fastening device according to claim 2, wherein the bar-shaped member fastening device is connected to the bar-shaped member.   The said slit is the fastening apparatus of the rod-shaped member of Claim 6 arrange | positioned in the position where the thickness of the radial direction of the said cylinder is the thinnest seeing in the circumferential direction of the said corresponding cylinder.   The permissive means further includes vertical grooves formed in the inner peripheral surfaces of the fitting hole and the through hole as the notches, and the vertical grooves extend over the entire axial length of the corresponding cylinder and The rod-shaped member fastening device according to claim 7, wherein the slit is positioned to be spaced apart from each other in a diameter direction of the cylinder.   9. The fastening device for a bar-shaped member according to claim 8, wherein the vertical groove has a bottom portion located outside as viewed in the radial direction of the corresponding cylinder and is expanded in an arc shape when viewed in cross-section. The longitudinal groove has a triangular shape that tapers toward the outer peripheral surface of the cylinder as seen in a cross section of the corresponding cylinder,
The permissive means further includes an axial recess formed on the outer peripheral surface of the corresponding cylinder to reduce a thickness between the outer peripheral surface and the bottom of the vertical groove, and the axial recess is the vertical groove. The rod-like member fastening device according to claim 8, wherein a self-hinge that enables expansion and contraction of the slit is formed in cooperation with the device.   2. The target member is a wooden base installed on a concrete foundation for a wooden house, and the rod-shaped member is an anchor bolt having a lower end embedded in the foundation. 10. A fastening device for a rod-shaped member according to any one of 10 to 10.

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