JPS6213655A - Method and jig for clamping concrete mold frame - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a concrete form tightening method and a tightening tool thereof.

[Conventional technology]

Conventionally, this type of concrete formwork fastener was the Jikko 5.
Publication No. 0-19701, Publication No. 53-8193,
Utility Model Publication No. 49-43409, Utility Model Number 52-2832
Publication No. 8, etc. may be mentioned.

FIG. 5 shows a first conventional structure, in which an end threaded portion 53 of a separator 52 interposed between panel plates 51, in this case a male threaded portion, and a threaded portion 5 at the front end of a shaft member 54.
5. In this case, screw the female thread part and parallel reinforcement pipe%
A shaft member diagram is arranged orthogonally between them, a female screw 57 is formed at the rear of the shaft member 54, a seat material helmet, in this case for a round pipe, is passed through the shaft member 8, and the male screw 57 is tightened. Attached nut 59
is screwed onto the reinforcing pipe group, and the reinforcing pipe group is tightened by a tightening nut 59 via the seat member sleeve.

Further, as a second conventional structure, there is a structure in which a wedge member is driven into the elongated hole of the shaft member M.

[Problem that the invention seeks to solve]

However, in the case of the above-mentioned first conventional structure, since the nut is used for tightening, the nut is first screwed onto the male screw, turned until the nut contacts the washer member, and then the nut is turned with a spanner or the like and reinforced through the washer member. The work efficiency is low because the pipe is tightened, and when concrete adheres to the male screw, it becomes difficult to turn the nut, and tools such as spanners are required for this work.
Since the shaft member, washer, and nut are carried around individually, work efficiency is further reduced and parts management is difficult.

Further, in the case of the second conventional structure, it is necessary to drive the wedge member, so that the work efficiency is low.

[Means for solving problems]

The present invention aims to eliminate these inconveniences, and the gist of the first invention is to connect a shaft member to an outwardly protruding portion of a panel plate of a separator, and to orthogonally connect the shaft member between reinforcing pipes. The tightening member loosely fitted to the shaft member is moved in the radial direction of the shaft member to engage the stepped groove of the shaft member, and the tightening member is rotated to tighten the tightening member. A method for tightening a concrete formwork is characterized in that the washer member penetrating the shaft member is pressed, and the reinforcing pipe is tightened by the tightening member via the washer member.

The gist of the second invention is to provide a shaft member having a connection portion with a separator at the front end and disposed perpendicularly between the reinforcing pipes, and a washer that penetrates the shaft member and is fitted onto the reinforcing pipe. member, and a tightening member that tightens the reinforcing pipe through the washer member, the tightening member is formed with elongated holes of different diameters, one end of which has a small diameter and the other end of which is a large diameter, and the shaft member has the different diameter elongated holes formed therein. A step groove that can be engaged is formed on the small diameter side of the long diameter hole, and a pressure contact portion that can press the washer member when the tightening member is rotated is formed on the opposing side surface of the washer member and/or the tightening member. A concrete formwork fastener characterized by comprising:

〔Example〕

1 to 4 show an embodiment of the concrete formwork fastener of the present invention, in which 1 is a panel plate, 2 is a separator, and a screw 3 is formed at the end of the separator 2. A spacing between the separator 2 and a panel plate (not shown) is maintained by the collar 4 of the separator 2.

Reference numeral 5 indicates reinforcing pipes, and the reinforcing pipes 5 are arranged in parallel along the outer surface of the panel board 1.

6 is a shaft member, and the front end of the shaft member 6 has a connecting portion 7;
In this case, a female thread is formed, and the connecting part 7 is connected to the thread 3.
and are arranged orthogonally between the reinforcing pipes 5.

8 is a washer member, and in this case, the washer member 8 is for a round pipe because the reinforcing pipe 5 has a circular cross section.
A hole 9 through which the shaft member 6 is inserted is formed in the center of the washer member 8 .

10 is a tightening member, and the tightening member 10 is formed in a rectangular plate shape.

Further, an annular step groove 11 is formed in the shaft member 6, and the rear step surface of the step groove 11 defines a locking step. It is determined by the diameter, the thickness of the washer member 8, etc.

Further, the tightening member 10 is formed with a long hole B having a small diameter at one end and a large diameter at the other end, and the large diameter side 13a is formed in the shaft member 6.
The small diameter side 13b is formed to be smaller than the outer diameter of the shaft member 6 and slightly larger than the outer diameter of the stepped groove 11, and the shaft member 6 is inserted into the large diameter side 13a, A bulging portion 14 is formed at the rear end of the shaft member 6 to prevent the tightening member 10 from being pulled out and removed, and the surface of the tightening member 10 facing the washer member 8 is formed as a flat surface to provide a locking stepped surface appearance. The opposite surface is the small diameter side 13
A locking slope is formed in which the thickness of the tightening member 10 gradually decreases from b to the large diameter side 13a, and the tightening member 10
A grip portion 16 is formed at the end of the large diameter side 13a of the shaft member 6, and a two-sided cut surface 17 having the same width as the width of the small diameter side 13b of the elongated hole 13 with different diameters is formed at the rear end of the shaft member 6. ing.

Further, on the opposing side surface of the washer member 8, pressure contact portions are formed in the form of two peaks on both sides, and the middle part of the washer member 8 between the pressure contact portions is formed into a valley bottom surface twisted with approximately the same width as the width of the tightening member 10. It is formed.

Since this embodiment has the above-mentioned configuration, the connecting portion 7 of the shaft member 6 is screwed and connected to the screw 3 of the separator 2, the shaft member 6 is disposed orthogonally between the reinforcing pipes 5, and the washer member 8 is connected to the reinforcing pipe. 5, and with the tightening member 10 in the direction of contacting the root surface 19, the large diameter side 13a of the long hole with different diameters is loosely fitted to the shaft member 6, and the tightening member 10 is moved to the washer member 8 side. Then, by grasping the grip part, the tightening member 10 is pulled in the radial direction of the shaft member 6 so that the small diameter side 13b faces the shaft member 6.

At this time, the locking slope positive and the locking step surface n engage with each other, and the washer member 8 presses the reinforcing pipe 5 due to the slope action, which is generated between the reinforcing pipe 5 and the outer surface of the panel board 1. Gaps can be almost eliminated.

When the tightening member 10 is rotated in this state, the tightening member 1
The opposite side surface of the washer member 8 engages with the pressure contact portion of the washer member 8.

At this time, the washer member 8 is pressed, and the reinforcing pipe 5 can be tightened through the washer member 8, and the tightening member 10 can be locked and fixed near the 90 degree rotation of the tightening member 1o.

Therefore, the reinforcing pipe 5 can be easily tightened by the axial movement, radial movement, and rotation of the tightening member 10.

In addition, as another embodiment, it is possible to tighten the reinforcing pipe 5 only by the action of the pressure welding part without forming a locking slope, and it is also possible to tighten the reinforcing pipe 5 only by the action of the pressure welding part. 10 and the washer member 8, or an intermediate member having a pressure contact portion may be interposed between the tightening member 10 and the washer member 8.

Further, although this embodiment shows the case where the reinforcing pipe 5 has a circular cross section, it can also be applied to cases where the cross section is square or triangular.

Further, since the tightening member 10 is formed with a grip portion 16, the tightening member W can be rotated without a tool such as a spanner, and
In this embodiment, the small diameter side 13b of the different diameter elongated hole 13 is hooked on the two-sided cut surface 17, and the shaft member 6 can also be rotated without a tool.

Furthermore, in this embodiment, the washer member 8 and the tightening member 10 are prevented from coming off from the shaft member 6 by the bulge 14, so that they can be carried around together.

In addition, if the screw 3 of the separator 2 is a female screw, the connecting portion 7
becomes a male screw.

〔Effect of the invention〕

As described above, the present invention moves the tightening member in the radial direction of the shaft member, engages the tightening member with the stepped groove of the shaft member, and rotates the tightening member to engage the washer member with the tightening member. By pressing, the reinforcing pipe can be tightened by the tightening member via the washer member, so that the reinforcing pipe can be easily and reliably tightened, and the efficiency of formwork tightening work can be improved. can.

As described above, the intended purpose can be fully achieved.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; Fig. 1 is an exploded perspective view, Fig. 2 is a side sectional view after tightening, Fig. 3 is a front view before tightening, and Fig. 4 is an overall perspective view. 5 are side sectional views of the conventional structure after tightening. 5. Reinforcement pipe °, 6. Shaft member, 7. Connection part,
8...Washer member, 10...Tightening member, 11...Step groove, 1
3. Long holes with different diameters, quick pressure contact parts. July 5, 1985 Applicant Masashi Abe Shido Limited Company Kaibu Construction 727 7,? -7+-1 Puffer fish 40

Claims (1)

[Claims] 1. A shaft member is connected to the outward protrusion of the panel plate of the separator, and the shaft member is orthogonally arranged between the reinforcing pipes, and the tightening member loosely fitted to the shaft member is connected to the shaft member. The clamping member is moved in the radial direction to engage the stepped groove of the shaft member, and the clamping member is rotated to press the washer member penetrating the shaft member, and the clamping member is used to press the washer member that penetrates the shaft member. A concrete formwork tightening method characterized by tightening a reinforcing pipe through members. 2. A shaft member that has a connection part with the separator at the front end and is arranged orthogonally between the reinforcing pipes, a washer member that penetrates the shaft member and is fitted onto the reinforcing pipe, and a washer member that is inserted through the washer member. and a tightening member for tightening the reinforcing pipe, and the tightening member is formed with elongated holes of different diameters, one end of which has a small diameter and the other end of which is a large diameter, and the shaft member is formed with elongated holes of different diameters that engage with the small diameter side of the elongated holes of different diameters. Concrete characterized by forming step grooves that can be combined with each other, and forming a press-contact part that can press the washer member when the tightening member is rotated on the opposite side of the washer member and/or the tightening member. Formwork fasteners.