JP3011460U - Construction fasteners - Google Patents

Abstract

(57) [Summary] [Purpose] Without restricting the construction around the pillars of the building, for example, the construction of the outer wall, and without providing the notch for fixing the bolt head on the stake beam part. It consists of a bolt tightening metal fitting and an angle member for fixing the bolt tightening metal fitting that can be used and can easily fix the device on site, has a small number of parts, and can hold the tightening force for a long period of time. It provides a fastener for construction. [Structure] An angle member for fixing a bolt tightening metal fitting, which is provided with a bolt insertion hole in a plate body bent at a right angle, and a rotor housed in a case, and one end of which is fixed to the rotor, The other end has a spring fixed to the case,
A fastening tool for construction consisting of a bolt fastening fitting with a rotation stopper on the top of the rotor.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a construction fastener using a fastening bolt and a nut for joining a beam and a strut beam, a girder and a beam, or a beam and a column in a wooden construction of a wooden structure, and particularly, a bolt fastening The present invention relates to a construction fastener including a metal fitting and a bolt fastening metal fitting fixing angle member.

[0002]

[Prior art]

 In the wooden construction of wooden construction, tightening bolts and nuts are used to join beams and strut beams, beams and girders, and beams and columns. For example, as shown in FIG. When joining, a tightening metal fitting consisting of a battledore bolt 2 and a nut 3 is used as a tightening bolt. A tightening metal fitting using this tightening bolt and nut can be used for preventing shrinkage of wood due to drying or earthquakes. There is a drawback in that the tightening of the tightening bolts and nuts becomes loose due to vibration.

Therefore, in order to prevent the bolts and nuts from loosening, Japanese Patent Laid-Open No. 6-173930 proposes a bolt loosening prevention device. This bolt loosening prevention device is, as shown in FIG. 7, a metal fitting 5 side having a through hole 4 which engages in a rotational direction with a head 3 ′ of a bolt 2 inserted into the bolt hole of a beam and a pillar 1 and the metal fitting 5 thereof. Is connected to the side of the rotating box 6 covered by a coil spring 7, and the rotating box 6 is provided with a rotating direction fixing portion 8 for the material 1, and is tightened at the rotating box fixing position by the fixing portion 8. The tightening direction of the coil spring 7 is the tightening direction of the head 3 '.

According to the bolt loosening prevention device, not only the looseness of the tightening bolt can be automatically tightened, but also the device can be downsized and can be applied and arranged in a narrow space. Is.

However, when the bolt loosening device is attached to the pillar or the beam, the device protrudes from the surface of the pillar or the beam by the height of the bolt loosening device. If the user wants to install a beam, it may not be possible to install an outer wall or the like as it is because the protruding device becomes an obstacle, and in the case of joining a beam and a struck beam forming an angle of 45 degrees, Since it is necessary to cut out the beam in order to fix the bolt head or the nut to the beam, it takes a lot of work to construct, and the structure of the building restricts the installation of the device and prevents the bolt from loosening. In some cases, itself cannot be used as a joining point.

Further, the above-mentioned bolt loosening prevention device has a complicated structure and a large number of parts. Therefore, it takes a lot of time to manufacture it, and since it is assembled on site, the coil spring is resisted against its biasing force on site. Since it has to be forcibly rotated and fixed, there is a drawback that fixing the device requires labor and time.

[0007]

[Problems to be solved by the device]

 INDUSTRIAL APPLICABILITY The present invention can be used without restricting the construction around the pillar of the building, for example, the construction of the outer wall surface, and without providing the notch for fixing the head of the bolt on the struck beam part. The present invention provides a construction fastener that can be easily fixed on site and has a small number of parts and a bolt tightening metal fixing angle member.

[0008]

[Means for Solving the Problems]

 The construction fastener according to the present invention is constructed such that the plate member bent at a right angle is provided with a bolt insertion hole for fixing the bolt fastening metal fitting, and the rotor is housed in the case. Has a spring fixed to the rotor and the other end fixed to the case, and comprises a bolt tightening fitting having a rotation stopper provided on the upper part of the rotor.

[0009]

[Action]

 In the present invention, since the bolt tightening fitting is fixed to the bolt tightening fitting fixing angle member, it does not project from the surface of the building pillar, so there is no hindrance to the construction of pillars such as outer walls. There is no need to make a connection, and pillars and beams can be joined without making notches for placing bolt heads and nuts in the striking beam part, and the spring of the bolt tightening fitting can be tightened. By tightening from the on-site tightening to the factory tightening, it is possible to tighten uniformly at the factory, which improves the quality of the bolt tightening metal fittings and eliminates the trouble of on-site tightening, so that the installation work of the construction fasteners can be done. It will be easier and the site work will be easier.

Further, since the tightening of the spring of the bolt tightening tool can be performed by a mechanical force in the factory, it is possible to apply a uniform tightening force as compared with the on-site installation by human power.

Furthermore, the bolt tightening fitting has a small number of parts, and its structure is simple, so that it is easy to manufacture.

[0012]

【Example】

 Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

As shown in FIGS. 1 and 2, the bolt fastening metal fixture fixing angle member 11 is formed by bending a metal plate at a substantially right angle, and the plate portions 12 and 13 forming a right angle have bolt insertion holes, respectively. 14 are provided.

Through the bolt insertion hole 14, a tightening bolt for fixing the angle member 11 for fixing the bolt tightening metal fitting to a pillar, a beam or the like, or a bolt for coupling with the bolt tightening metal fitting 21 is inserted.

Further, the plate portions 12 and 13 may be provided with a screw hole 15 for temporarily fixing and fixing the bolt fastening metal fixture fixing angle member 11 to a column or the like.

On the surfaces of the plate portions 12 and 13, projections 16 and 17 for engaging the elongated holes (FIG. 3) of the bolt tightening fitting 21 (FIG. 3) described later to fix the bolt tightening fitting 21. Has been formed.

Further, the angle member 11 for fixing the bolt tightening metal fitting is provided with the reinforcing ribs 18, the reinforcing flange portions 19 are provided on both side edges of the angle, or both are provided. The strength of 11 can be increased. When the reinforcing flange 19 is provided, a 45-degree inclined surface is formed at the end of the flange 19 in order to easily press the striking beam.

Next, the bolt tightening fitting will be described with reference to FIGS. 3, 4, and 5.

The projections 16 and 17 of the bolt fastening metal fixture fixing angle member 11 are locked to the lower part of the case 22 to fix the bolt fastening metal fixture 21 to the bolt fastening metal fixture fixing angle member 11. A flange 24 having a long hole 23 is formed.

Inside the case 22, a rotor 27 having a lower flange 26 that slides on the inner wall of the case 22 in the circumferential direction in the lower part of the hollow portion 25 is rotatably accommodated in the case 22. . The cross section of the hollow portion 25 of the rotor 27 is shaped so as to form a locking hole 34 for locking a bolt head or a nut.

A spring 28 is wound around the rotor 27. One end of the spring 28 is fixed to the rotor 27 and the other end is fixed to the case 22. The spring may be a single winding, but if a spring in which the inner winding spring 28 and the outer winding spring 35 are integrated is used, the tightening distance becomes large, and accordingly, the tightening bolt or nut is Since the tightening rotation distance can be increased and the tightening force can be maintained for a long period of time, it is possible to prevent loosening of the bolt for a long period of time.

A rotation stopper 30 can be detachably coupled to the upper portion of the rotor 27 protruding through the opening 29 provided in the lid 31 of the case 22. The rotation stopper 30 is provided with a pin 33 that is locked in the hole 32 of the lid portion 31 of the case 22, and the spring 28 is tightened by the rotation of the rotor 27 against its urging force. It is a stopper for preventing the rotor 27 from rotating back. The tightening of this spring is done in the factory.

A method of tightening the spring of the bolt tightening fitting 21 having the above structure will be described.

The rotor 27 is rotated by an appropriate means against the biasing force of the spring 28, and the spring 28 is tightened according to this rotation. In the case of the spring in which the inner wrap spring 28 and the outer wrap spring 35 are integrated as shown in FIG. 5, the inner wrap spring 28 is tightened first, and then the outer wrap spring 35 is tightened, so that the spring is large. The tightening distance is given. After rotating the rotor 27 a predetermined number of times and tightening the spring by a predetermined amount, the rotation stopper 30 is fitted onto the upper portion of the rotor 27, and the pin 33 of the rotation stopper 30 is engaged with the hole 32 of the lid 31 of the case 22. Stop to prevent the spring from rewinding.

Next, the tightening of timber with the building fastener according to the present invention will be described.

In FIG. 6, in the case of a beam-to-beam connection having a right angle, a bolt is passed through the bolt insertion hole 14 of the tightening metal fixture fixing angle member 11 inside the beam to fix the bolt tightening metal fixture angle. The member 11 is fixed so that the plate portion is perpendicular to the beam. The above-mentioned fixing may be performed by using the screw holes 15 to temporarily fix the screws.

Next, the tightening bolt 2 is inserted into the bolt insertion hole 14 of the tightening metal fixture fixing angle member 11 and the bolt hole formed in the beam and tightened with a nut to join the beam and the beam.

When the beam-to-beam connection is completed by the tightening bolt 2 and the nut, the fixing elongated holes 24 of the bolt tightening metal fitting 21 are engaged with the projections 16 and 17 of the bolt tightening metal fitting fixing angle member 11. At the same time, the head or nut of the tightening bolt 2 is locked in the locking hole 34, the bolt tightening metal fitting 21 is fixed to the bolt tightening metal fitting fixing angle member 11, and then the rotation stopper 30 is removed. No. 28 is given a biasing force in the direction of tightening the tightening bolt 2 or the nut, so that the bolt is tightened, and the tightening of the tightening bolt 2 and the nut is loosened by contraction due to drying of wood or vibration due to an earthquake or the like. Even if a force is applied, the tightening bolt and nut are tightened by the action of the tightening force, so they will not loosen. Needless to say, the bolt tightening fitting 21 may be applied to prevent loosening of the bolts and nuts used to fix the bolt fastening fitting fixing angle member 11 to the beam.

Next, the joining of the beam and the striking beam shown in FIG. 6 will be described.

The angle member 11 for fixing the bolt tightening metal fitting is set to be 45 degrees with respect to the striking beam, and the tightening bolt 2 is inserted through the bolt insertion hole 14 and the through hole formed in the beam to tighten the bolt. By tightening the attached bolt 2 and the nut, the bolt tightening fixture fixing angle member 11 is pressed against the beam, and the beam and the striking beam are tightened. After joining the beams to each other, the heads or nuts of the tightening bolts 2 are locked in the locking holes 34 in the same manner as in the above-described embodiment, and the bolt tightening metal fittings 21 are fixed to the bolt tightening metal fittings. After fixing to 11, the urging force of the spring acts in the direction of tightening the bolt or nut by removing the rotation stopper 30.

[0031]

[Effect of device]

 The effects of the present invention are as follows.

Since the bolt tightening bracket is fixed to the bolt tightening bracket fixing angle member, the bolt tightening bracket does not protrude from the surface of the pillar, so there is no hindrance to the work around the pillar such as the exterior wall of the building. .

Since the wood cross section can be used without cutting out the struck beam part of the surface of 45 degrees, it does not take time and labor for the work.

Since the bolt tightening metal is pre-biased, it is not necessary to tighten the spring on site, and the bolt tightening metal and the bolt tightening metal fixing angle member can be mounted and rotated. Only the work of removing the stopper is required, which greatly simplifies the work of installing the bolt tightening bracket and the angle member for fixing the bolt tightening bracket on site. Since the spring is tightened at the factory, the bolt tightening metal fittings can be fixed, and the spring with a large elastic force can be tightened by the mechanical force. Uniform and stable tightening force can be obtained compared with tightening by.

The building fastener according to the present invention has a smaller number of mounting parts, a simple structure, and is easier to manufacture than the conventional fasteners.

[Brief description of drawings]

FIG. 1 is a perspective view of an angle member for fixing a bolt tightening fitting according to the present invention.

2 is a perspective view of an angle member for fixing a bolt tightening metal fitting according to the present invention, as viewed from an angle different from FIG.

FIG. 3 is a plan view of a bolt tightening fitting according to the present invention.

FIG. 4 is a front view of a bolt tightening fitting according to the present invention.

5 is a sectional view taken along line AA of FIG.

FIG. 6 is an explanatory view of an embodiment in which the building fastener of the present invention is used for a joint portion.

FIG. 7 is a vertical sectional view of a conventional bolt loosening prevention device.

FIG. 8 is an explanatory view of a conventional bolt tightening fitting.

[Explanation of symbols]

1 Beam and Column, 2 Bolts, 3 Nuts, 3'Bolt Head, 4 Through Holes, 5 Metal Fittings, 6 Rotating Boxes, 7 Coil Ribs, 8 Fixing Parts, 11 Bolt Tightening Fixing Angle Members, 12, 13 Plate part, 14 Bolt insertion hole, 15
Screw holes, 16, 17 protrusions, 18 reinforcing ribs, 19 reinforcing flanges, 21 bolt tightening fittings, 22 case, 2
3 long hole, 24 flange, 25 hollow part, 26 flange, 27 rotor, 28 inner winding spring, 29
Opening, 30 rotation stopper, 31 lid, 32 hole, 3
3 pins, 34 locking holes, 35 outer winding spring

Claims (6)

[Scope of utility model registration request] 1. A rotor that is wound in a case,
It has a spring with one end fixed to the rotor and the other end fixed to the case, and a bolt clamp with a rotation stopper on the upper part of the rotor and a bolt insertion hole in the plate bent at a right angle. A fastening tool for construction, which is provided with an angle member for fixing a bolt fastening fitting provided. 2. The construction fastener according to claim 1, wherein the plate body has a reinforcing rib. 3. A reinforcing flange is provided on a side edge of the plate body,
The construction fastener according to claim 1 or 2, wherein an inclined surface of 45 degrees is formed at an end of the reinforcing flange. 4. The rotation stopper is attachable to and detachable from the rotor.
The described fasteners for construction. 5. The building fastener according to claim 1, wherein the spring is a spring in which an inner winding spring and an outer winding spring are integrated. 6. The building according to claim 1, wherein a protrusion that engages with an elongated hole provided in a lower portion of the case is provided on a surface of the plate body. Fasteners.