JPS6220562Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to construction connecting fittings, and is constructed using rational processing methods, reducing costs and stabilizing quality, making mass production possible, and making it practical as construction connecting fittings. It is intended to enhance sexuality.

Conventionally, in connection fittings for construction such as building inserts, holes are drilled by cutting along the axis of the main body, so this is particularly difficult when used with bolts screwed onto the top and bottom of the main body. would result in a significant increase in cost and would be impractical.

Furthermore, in the case of a configuration in which the anchor is buried in concrete, a parallel portion is provided in the anchor portion of the main body in a separate process to prevent rotation, which further increases costs.

This idea focuses on the conventional drawbacks mentioned above,
This is provided to solve this problem.

Next, the structure of the construction connecting fitting according to this invention will be explained based on the drawings of the embodiment.

FIG. 1 shows a perspective view of the first embodiment taken in longitudinal section, in which reference numeral 1 denotes a connecting fitting that connects a flange 3 at one end of a rod 2 and a shaft from both ends of the rod 2. Hollow holes 4 and 5 that do not penetrate along the center are integrally formed by plastic working, and a female thread 6 is formed in the hollow hole at the other end of the rod 2.

The construction connecting fitting according to the first embodiment of this invention having the above structure is installed on a concrete formwork (not shown) using female screws 6 as shown in FIG. 2, and is buried by pouring concrete. By screwing the hanging bolt A into the female thread 6, it is possible to construct a ceiling base or the like.

At this time, if the hollow hole 4 at the top (one end) is made into a square hole, it will be placed in the concrete and will have a great anti-rotation effect.

FIG. 3 is a partial central vertical sectional view of the second embodiment of this invention in use. According to this structure, a female thread 14 is inserted into the hollow hole 14 at the upper part (one end) of the connecting fitting 11.
By forming a, for example, an adjustment bolt B for regulating the concrete top, an anchor bolt C for fixing a floor base material, etc. can be screwed into this for use.

FIG. 4 is a central longitudinal sectional view showing a third embodiment of the connecting fitting 21 of this invention, in which a synthetic resin pedestal D is press-fitted into the outer periphery of the lower part (other end) of the connecting fitting 21 and supported. Mounting to the formwork is done on the pedestal D.
This is easily possible by nailing the

FIG. 5 is a partial cross-sectional view of a state in which the connecting fitting of this invention is used as a joint for maintaining the gap between forms. By press-fitting the separator S into the internal thread 34a on one end, and the bolt shaft F into the internal thread 36 on the other end, the separator S is inserted into the internal thread 34a at one end, and the bolt shaft F is inserted into the internal thread 36 at the other end. Can be tightened.

As described above, according to this invention, since the hollow holes on both sides of the flange and the shaft center are formed by plastic processing (forming by heading with a bolt homer, etc.), there is no scrap compared to the conventional cutting process. Moreover, since the material extruded from both sides by blow molding is extruded and expanded along the axis, the material cost can be reduced, and moreover, the machining process can be labor-saving, and cost reductions can be expected.

In addition, high strength can be obtained due to the high tissue density,
The quality is constant and it is advantageous for mass production.

Furthermore, if it is buried in concrete, it has a high anti-rotation effect, and if female threads are formed in the upper and lower hollow holes, it can be used for multiple purposes.

Furthermore, the metal fittings themselves have the effect of being lightweight, which is practically effective.

[Brief explanation of the drawing]

Fig. 1 is a central vertical sectional view showing the first embodiment of the connecting fitting of this invention, Fig. 2 is a diagram of its usage state, and Fig. 3
The figure is a partial central vertical sectional view showing the second embodiment in use, FIG. 4 is a central longitudinal sectional view showing the third embodiment of the connecting fitting of this invention, and FIG. FIG. 7 is a partial cross-sectional view of the device in use for other purposes. 1... Connecting metal fittings, 2... Rod body, 3... Flange part,
4, 5... Hollow hole, A... Hanging bolt, B... Adjustment bolt, D... Pedestal, E... Cone, F... Bolt shaft, G... Tightening rod, P... Formwork.

Claims (1)

[Scope of utility model registration request] A flange at one end of the rod and a hollow hole that does not penetrate along the axis from both ends of the rod are integrally formed by plastic working, and at least a female thread is formed in the hollow hole at the other end. Connecting fittings for construction.