JPH0142605Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a formwork support used for supporting formwork during concrete pouring.

[Prior art and its problems]

As shown in the drawing of the conventional example in FIG. 3, the formwork support conventionally used to support the formwork during concrete pouring consists of a conical body 21 made of wood or plastic, and a pivot foot 27 integrated in the center of the conical body 21. The pivot foot 27 is provided with a female thread 22 screwed into the reinforcing bar 24 on the end surface that coincides with the top surface of the conical body 21, and a male thread 23 for tightening the formwork 25 on the other end.
When removing the formwork support 20 after pouring concrete 26 using the formwork support 20 configured in this way, it is important to be aware that concrete may stick to the female threads 22, male threads 23, corners, etc. easily female thread 2
2 could not be rotated to remove the formwork support 20 from the reinforcing bars 24. Therefore, the formwork support 20 may be damaged because a double nut is inserted into the external screw 23 and removed by applying a blow, which is a very time-consuming work when constructing a concrete structure. Also, there was a lot of wasted material.

[Purpose of invention]

The present invention improves the conventional formwork support to eliminate material waste and provide a formwork support that is easy to remove.

[Structure of the idea]

The present invention penetrates through the center of the cone, attaches the pivot foot integrally to the cone so that the end of the pivot foot coincides with the top surface of the cone, and attaches a reinforcing bar screw of a predetermined depth to the end of the pivot foot. At the same time, the other end of the shaft protrudes from the bottom of the cone by a predetermined length, and a male thread for tightening the formwork is provided on the outer periphery of the shaft, and a prismatic head is formed at the tip of this male thread. This is a formwork support.

〔Example〕

One embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view with a part of the formwork support in cross section. The formwork support 1 is composed of a cone body 2 made of wood or plastic and a pivot foot 3 that passes through the center of the cone body 2 and is integrally attached by driving or molding. The end 4 of the pivot foot 3 is the cone 2
A female screw 5 for screwing the reinforcing steel of a predetermined depth is screwed into the center of this end 4, and the shaft foot 3
The other end protrudes from the bottom surface 2b of the conical body by a predetermined length, and a male screw 7 for tightening the formwork is provided on the outer periphery of the cone, and the tip of the male screw 7 has a rectangular or hexagonal cross section. A prismatic head 8 is formed.

[Effect]

FIG. 2 is a side sectional view showing the form support 1 in use. The formwork support 1 is constructed by first screwing the reinforcing bar screwing female screw 5 onto the screw 10a at the tip of the reinforcing bar 10, then attaching the formwork 12 and screwing the nut 11 onto the formwork tightening male screw 7, and then tightening the formwork. 12 to fix the formwork 12. After pouring the concrete 13, remove the nuts 11, remove the formwork 12, insert the wrench 14 into the square column head 8 and rotate it to loosen the female threads 5 and screws 10a at the threaded part with the reinforcing bars 10, and remove the formwork. Remove the frame support 1. This sampled-out trace is filled with mortar or the like, and the sampled form support 1 can be reused.

[Effect of idea]

The formwork support according to the present invention can be easily removed using a common spanner without damaging the formwork support, which has the effect of eliminating wasted materials and improving work efficiency.

[Brief explanation of the drawing]

Figure 1 is a partially sectional side view of the formwork support;
The figure is a side sectional view for explaining the usage state, and FIG. 3 is a side sectional view for explaining the usage state of the conventional formwork support. DESCRIPTION OF SYMBOLS 1... Formwork support, 2... Cone, 2a... Top surface of the cone, 2b... Bottom surface of the cone, 3... Pivot foot, 4... End of pivot foot, 5... Reinforcement bar Female thread for screwing, 7... Male thread for tightening formwork, 8... Square column head, 10... Rebar, 10a... Screw, 11... Nut, 12... Formwork, 13... Concrete, 1
4...Spanner.

Claims (1)

[Scope of utility model registration request] Penetrates through the center of the cone, attaches the shaft foot integrally to the cone so that the end of the shaft foot matches the top surface of the cone, and screws a female thread for reinforcing bar screwing to a specified depth into the end of the shaft foot. At the same time, the other end of the shaft protrudes from the bottom surface of the cone by a predetermined length, and a male screw for tightening the formwork is provided on the outer periphery of the foot, and a prismatic head is formed at the tip of this male screw. Support.