JPH0618714U - Temporary fixing bolt - Google Patents

Abstract

(57) [Summary] [Purpose] Easily and temporarily fix building members. [Structure] A peripheral surface of a rod-shaped member 11 having a circular cross section is deleted in a lengthwise direction to form a recess 14 having a semicircular cross section, and a step 17 is formed between a tip portion 12 and the recess 14, and a rear end portion 1
3, a nut 18 is screwed onto, and an elongated leaf spring 15 is attached to the opposite side of the recess 14, and an intermediate portion 1 of the leaf spring 15 is attached.
6 is bulged outward to form a temporary fixing bolt 20. When the temporary fixing bolt 20 is inserted into the holes 22 and 23 of the building member in which the tip portions 12 are overlapped and the step 17 is projected, the flat spring 15 causes the flat surface 26 of the recess to form the holes 22 and 23.
It is pressed against the wall surface of the and the step 17 is caught on the peripheral edge of the hole (22, 23). At that time, when the nut 18 is tightened, the two building members 24 and 25 are sandwiched between the nut 18 and the step 17 and temporarily fixed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention mainly relates to a temporary fixing bolt used for construction work of building members.

[0002]

[Prior art]

 In the construction work of building members, the screw holes 24 and 25 opened in the building members 22 and 23 such as steel columns, steel beams, and outer wall panels to be assembled are overlapped, and they are inserted into the holes 24 and 25 in which Shino and bolts are overlapped. The building members 22 and 23 are temporarily fixed with and the building members 22 and 23 with holes 24 and 25 in which the screw thread is not engraved are opened. 22 and 23 are temporarily fastened, and the members are temporarily assembled in the temporarily fastened state to perform positional assembly, and then the bolts inserted in the overlapping holes are fully tightened to construct the building. Assembling the parts.

[0003]

[Problems to be solved by the device]

 In such a conventional method, the overlapping holes are damaged by the inserts used to adjust the joint position between the building members, and the bolts used for temporary fixing cannot be removed from the holes or the screw threads of the bolts are not removed. Is damaged.

Further, the vise 29 is difficult to use for temporarily fixing the construction members 22 and 23 in a place where the scaffolding is high.

In addition, when the distance from the position of the holes 24 and 25 of the building members to the edge of the building member 22 and 23 is large, or when the members 22 and 23 are too thick, In some cases, the vise 29 cannot be used for temporarily fixing the construction members 22 and 23.

Therefore, the present invention is intended to provide a temporary fixing bolt that can be inserted into and removed from the assembly holes of the building members to be stacked and temporarily fixed between the building members.

[0007]

[Means for Solving the Problems]

 The temporary fixing bolt 20 according to the present invention is composed of a rod-shaped member 11 having a straight circular cross-section with a straight axis, and does not reach both ends 12 and 13 of the rod-shaped member 11 along the length direction of the axis. A concave portion 14 having a long peripheral surface is formed, and the cross section of the concave portion 14 has a semicircular shape, and the cross section along the axial center of the rod-shaped member including the concave portion 14 has a long U-shape of an intermediate portion. Then, a long and thin leaf spring 15 is attached along the lengthwise direction of the shaft core on the peripheral surface opposite to the recess 14 with the shaft core as a boundary. The leaf spring 15 has an intermediate portion 16 in the lengthwise direction. Elastically projects toward the opposite side of the recess 14, and there is a step between the tip portion 12 of the rod-shaped member on the tip side of the recess and the recess 14, and the step 17 makes the tip portion 12 hook-shaped. And the rear end of the rod-shaped member 11 on the rear end side of the recess It is characterized in that the thread 19 which is screwed in the nut 18 on the peripheral surface 13 is attached.

The temporary fixing bolt 20 is inserted into the overlapping holes 24 and 25 of the two building members 22 and 23 to be temporarily fixed until the tip side of the recess 14 projects.

When the tip portion 12 protrudes to the back side of the hole in this way, the leaf spring 15 pushes up the entire temporary fixing bolt 20 in the holes 24 and 25, and the flat surface 26 of the recess 14 is pressed against the hole inner wall surface 27. Since the step 17 is caught on the back side peripheral edge 28 of the hole, when the nut 18 is tightened, the two building members 22 and 23 are sandwiched between the step 17 and the nut 18 and temporarily fixed.

When the nut 18 is tightened, in order to prevent the temporary fixing bolt 20 from rotating together with the nut 18, the rear end portion 13 provided with the screw thread 19 is rotated around the axial center of the rod-shaped member 11. The shape 21 that engages with a tool such as a monkey or a driver may be used. In the illustrated embodiment, the shape 21 is suitable for grasping with a fingertip or pliers, but the shape 21 may be a through hole which is opened at a right angle to the axis of the rod-shaped member 11 and into which a driver can be inserted. Alternatively, it may be an engagement recess that engages with a driver recessed in the axial direction of the rod-shaped member 11.

When removing the temporary fixing bolt 20, the entire temporary fixing bolt 20 is pushed down against the elastic force of the leaf spring 15 in the direction in which the flat surface 26 of the recess is separated from the inner wall surface 27 of the hole, and the step 17 is removed. Remove from the peripheral edge 28 and pull out the temporary fixing bolt 20.

In order to make it possible to push down the entire temporary fixing bolt 20 in this way, it is sufficient to use a leaf spring 15 having elasticity such that the flat surface 26 of the recess is lightly pressed against the inner wall surface 27 of the hole. .

[0013]

[Effect of device]

 The temporary fixing bolt 20 of the present invention is locked only by pushing the tip portion 12 into the holes 24 and 25, and the nut 18 is tightened as it is to temporarily fix the building members 22 and 23. Operation at the time of temporary fixing However, the temporary fixing bolt 20 of the present invention can be used for quick temporary fixing because the temporary fixing bolt 20 is pushed in and the nut 18 is rotated.

Therefore, the temporary fixing bolt 20 of the present invention is very convenient for temporarily temporarily fixing the building members 22 and 23 such as two panels that are overlapped with each other in the assembly work of a factory-manufactured house or the like.

[Brief description of drawings]

FIG. 1 is a perspective view of a temporary fixing bolt according to the present invention in use.

FIG. 2 is a side view of the temporary fixing bolt according to the present invention in use.

FIG. 3 is a side view of the temporary fixing bolt according to the present invention in use.

FIG. 4 is a sectional side view of a building member temporarily fixed by a vise.

[Explanation of symbols]

 11 Rod-shaped member 12 Front end portion 13 Rear end portion 14 Recessed portion 15 Leaf spring 16 Intermediate portion 17 Step 18 Nut 19 Screw thread 20 Temporary fixing bolt 21 Shape 22 Building member 23 Building member 24 Hole 25 hole 26 Plane 27 Hole inner wall surface 28 Perimeter 29 vise

Claims (2)

[Scope of utility model registration request] 1. A rod-shaped member 1 having a straight circular axis and a circular cross section.
1 and both ends 1 of the rod-shaped member 11
A recessed portion 14 is formed whose peripheral surface is elongated along the longitudinal direction of the shaft core without reaching 2 · 13. The recessed portion 14 has a semicircular cross section, and the rod-shaped member includes the recessed portion 14. Has a long U-shaped cross section along the axis, and a leaf spring 15 that is elongated along the length direction of the axis is formed on the peripheral surface opposite to the recess 14 with the axis as a boundary. It is attached,
An intermediate portion 16 in the length direction of the leaf spring 15 elastically projects toward the opposite side of the recess 14, and there is a step between the tip portion 12 of the rod-shaped member on the tip side of the recess and the recess 14. The tip portion 12 is hook-shaped due to the step 17, and a screw thread 19 to which a nut 18 is screwed is attached to the peripheral surface of the rear end portion 13 of the rod-shaped member 11 which is the rear end side of the recess. A temporary fixing bolt characterized in that 2. A shape 21 for engaging a tool such as a monkey or a screwdriver for rotating the rod-shaped member 11 around the shaft with the rear end portion 13 provided with the screw thread 19 according to claim 1 above. The above-mentioned claim 1 characterized in that
Temporary fixing bolt described in.