JPS5840191Y2 - Structure connection fittings - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a connecting fitting for connecting pipe materials constituting scaffolding, support frames, etc. in construction, civil engineering works, etc.

2. Description of the Related Art Conventionally, scaffolding at construction sites and the like has generally been constructed by combining logs.

The connecting fittings used to combine such pipe materials have traditionally been cast or forged products, so
It was not only heavy, but also not very strong and expensive.

In addition, silver-gold ones have recently been developed, but they have the drawback of insufficient strength as described below.

The present invention was devised in view of the above-mentioned problems, and the purpose is to provide a lightweight, strong, and inexpensive connecting fitting.It also aims to provide a connecting fitting that is lightweight, has high strength, and is inexpensive. An object of the present invention is to provide a connector that can firmly perform the following.

An embodiment of the present invention will be described in detail below with reference to the drawings.

The conventional connecting fitting has a structure in which a structure is held between flanges 17 a and 17 b on both sides of the base fitting 3 and flanges 16 a and 16 b on both sides of the opening/closing fitting 5, as shown in FIG. 5, for example.

That is, the ribs 19 provided on the opening/closing fitting 3 merely serve to reinforce the opening/closing fitting, and are designed to protrude outward and do not come into contact with the outer periphery of the structure.

Therefore, even if the basic metal fitting 3 and the opening/closing metal fitting 5 are tightened using the bolts 9 and nuts 11, sufficient strength is not exerted, and loosening occurs, and the curled portion 20 is likely to elongate.

Connecting fitting 1 according to the present invention as shown in FIGS. 1 and 2
The base metal fittings 3 and the opening/closing metal fittings 5 are connected to each other by pins 7, and the ends of the opening/closing metal fittings 5 are attached to the base metal fittings 3 as described later. A bolt 9 attached to the tip is inserted and can be tightened freely via a nut 11, and the opening/closing fitting 5 and the base fitting 3 are provided so as to tighten the structure, that is, the pipe material 13.

The base metal fitting 3 is formed by forming a steel plate into a substantially semicircular arc shape using a press machine, and has radially projecting flange portions 17a on both sides of the body portion 15, respectively.
17b is formed, and these flange parts 17a, 17
The inner peripheral edge of b is provided in a semicircular arc shape so as to engage with the pipe material 13.

The opening/closing fitting 5 is formed by forming a steel plate into a semicircular arc shape using a press machine, and has a reinforcing plate in the center of its body in the width direction. The ribs 19 are shaped to protrude inward.

Therefore, the rib 19 is located in the center of the base metal fitting 3 between the flanges 17 a and 17 b on both sides.

As shown in FIGS. 2 and 3, the rib 19 has a T-shape in which the inner end protrudes to a position where it can press the structure, and the cross-sectional shape of the rib 19 is (cut along a radial line). ) is preferably U-shaped.

That is, when the structure is formed into a U-shape, the pressing surface of the structure becomes wider.

At the tip of the opening/closing fitting 5, there is a notch 2 in which a bolt 9 can be freely engaged and detached.
The stand-up bracket 23 with 1 is of the form.

The base of the bolt 9 is pivotally connected to a pivot bracket 10 provided at the other end of the base metal fitting 3 via a pin 25.
The pivot bracket 10 and the rising bracket 23
By joining with, the opening/closing fitting 5 and the base fitting 3 can be freely tightened.

By the way, to further explain the T-shaped rib 19, the rib bottom 8 protrudes inward from the center of the opening/closing fitting 5, and is preferably continuous along almost the entire circumference of the opening/closing fitting.

Next, the head of the T-shaped rib 19 will be explained. It is characterized by being provided close to the upright bracket 23, and with this configuration, when tightening the bolt 9 with the nut 11, the opening/closing metal 5 rising bracket 23
The bracket 23 is deflected to the side opposite to the pivot bracket 10, thereby providing a tightening margin for the bracket 23 to be tightly tightened to the pivot bracket 10.

Since the width of the bottom of the rib in this portion is wide, the nut 11 can be sufficiently tightened and a loosening effect can be produced.

The usage of the connecting fitting 1 according to the present invention will be described.

By loosening the nut 11 and separating the bolt 9 from the notch 21 of the bracket 23 provided on the opening/closing fitting 5, the opening/closing fitting 5 can be opened and closed about the pin 7.

Therefore, after opening the opening/closing fitting 5, engaging the pipe material 13 with the basic fitting 3, closing the opening/closing fitting 5 again, engaging the bolt 9 with the notch 21, and then tightening the nut 11, the pipe material 13 is flange portion 17a of the base metal fitting 3;
17b and the inwardly protruding edge of the knob 19 of the opening/closing fitting 5, it tends to bend in response to a bending moment, and is tightened extremely firmly.

Further, the two pipe members 13, 13 can be firmly connected to the connecting fitting 1 at any angle ranging from a perpendicular direction to a parallel direction.

In particular, when the structure of the present invention is used, the structure is tightened not only by the flanges on both sides of the fitting but also by the central rib, and furthermore, the tightening by the nut becomes strong.

As can be understood from the explanation of the embodiments above, the gist of this invention is the configuration as stated in the claims for utility model registration, so when tightening and fixing a structure, it is necessary to Since a bending moment acts and tends to bend, it can be tightened more firmly than in the past.

Please refer to the following attached table 1. Second, we will show the results of a clamp test between the conventional connecting fitting and the connecting fitting of the present invention in accordance with the testing method of the Temporary Construction Industry Association, which showed an approximately 45% improvement in strength, and no abnormalities were observed. There wasn't.

The present invention is not limited to the above-mentioned embodiments, and the present invention can be implemented in modes other than the above-mentioned embodiments.

[Brief explanation of the drawing]

1 is a perspective view of a main part of a connecting fitting according to the present invention, FIG. 2 is a front sectional view thereof, and FIG. 3 is a view taken in the direction of arrow III in FIG. 2. FIG. 4 is a cross-sectional view taken along the line ■■-■V in FIG. 3, and FIG. 5 is a cross-sectional view showing a conventional silver-gold connecting fitting. Explanation of the symbols representing the main parts of the drawing 1...
Connection fittings, 3... Basic fittings, 5... Opening/closing fittings, 7... Pins, 9... Bolts,
19...T-shaped rib.

Claims (1)

[Scope of utility model registration request] One end of each of the basic metal fitting and the opening/closing metal molded in a semicircular arc shape is pivotally connected, and the other end of each is provided so as to be tightenable and releasable. A rib having a U-shaped cross section is formed at the center of the width direction of the body of the opening/closing fitting, and when the other end of the opening/closing fitting is tightened to the base fitting. A connecting fitting for a structure, characterized in that the inwardly projecting end edge of the rib projects inward to press the structure between the base fitting and the opening/closing fitting.