JP3006126U - Pipe connection fitting - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a pipe connecting fitting for joining steel pipes to each other when constructing a temporary scaffold or the like. [Structure] An inner surface of a metal fitting body 1 having a side surface L shape having a required width is formed in a semi-circular shape, while a lower end of a holding metal fitting 2 having an inner surface semi-circular shape is rotatable on a support shaft 3 provided at a lower end of the metal fitting body. Attached to the upper end of the metal fitting 2, a bent edge 4 is formed on the side edge of the upper end of the metal fitting 2 and is bent outward in an acute angle, and the opening / closing plate 6 is rotated on a support shaft 5 provided on the upper end of the metal fitting body 1. A washer 9 is integrally fitted on the upper surface of the opening / closing plate 6 to the rotary shaft 7 which is freely attached and is rotatably supported by the opening / closing plate 6, and is also opened / closed with a recess 12 formed in the bottom surface of the washer 9. The rotary shaft 7 is positioned by fitting with the convex portion 13 provided on the surface of the plate 6, and the cam plate 10 is integrally formed on the rotary shaft 7 with the elastic body 11 interposed at the inner bottom of the opening / closing plate 6. It is made by external fitting.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a metal fitting for interconnecting pipes in a scaffolding frame for construction work made by combining steel pipes.

[0002]

[Prior art]

 A pair of side L-shaped metal fitting bodies having a required width, and their rear surfaces rotatably joined to each other, and the arc-shaped inner surface of the metal fitting body and the arc of the holding metal fitting rotatably attached to one end of the metal fitting body. It is desired that the pipe connecting metal fitting for sandwiching the pipe between the metal part and the metal fitting should be a simple and reliable means for joining the metal fitting body and the holding metal fitting.

[0003]

[Problems to be solved by the device]

 The present invention provides a pipe connecting fitting for easily and surely connecting pipes constituting a temporary scaffolding or the like.

[0004]

[Means for Solving the Problems]

 In the pipe connection fitting of the first invention, the inner surface of the side L-shaped fitting main body is formed in a semicircular shape with a required width, while the lower end of the inner semicircular pressing fitting is provided in the width direction of the lower end of the main fitting body. A pipe connecting metal fitting, which is rotatably attached to a support shaft, and is provided with joining means at the upper end portion of the holding metal fitting and the upper end portion of the metal fitting body, which are rotatably joined at their rear surfaces. The joining means consists of the following. As for the joining means, the holding metal fitting has a bent edge with the upper end bent outward in an acute angle, and the tool body has an opening / closing plate rotatably attached to a support shaft provided in the width direction of the upper end. At the inner bottom of the opening / closing plate, a cam plate is fixed by inserting a rotary shaft orthogonal to the support shaft.

In the pipe connecting fitting of the second invention, a recess is provided in the bottom surface of the washer integrated with the opening of the opening / closing plate on the rotating shaft, and a projection is fitted on the surface of the opening / closing plate. It is formed by projecting, and an elastic body that expands and contracts with a required stroke is externally fitted between the inner bottom surface of the opening and closing plate and the cam plate.

[0006]

[Action]

 By the rotation of the rotating shaft within one rotation, the cam surface of the cam plate engages with the bent edge of the press fitting to press the press fitting against the outer circumference of the pipe, and the elastic member expands and contracts to project the convex portion on the top surface of the opening / closing plate. Insert into the recess on the bottom of the washer at the positioning end, and clamp the pipe between the metal fitting body and the holding metal fitting.

[0007]

【Example】

 The present invention will be described with reference to an embodiment. As shown in FIG. 1, a pair of metal fitting bodies 1 each having a required width and having a substantially L-shaped side surface are joined to each other at their rear surfaces and rotatably joined at the same rear surface. The lower end of the holding metal fitting 2 whose inner surface is formed in a semi-circular shape is rotatably attached to the support shaft 3 provided in the width direction of the lower end of the metal fitting body 1. The front end edge and both side edges of the upper end portion of the holding metal fitting 2 are bent at an acute angle to form a bent edge portion 4. An opening / closing plate 6 is rotatably attached to a support shaft 5 provided in the width direction at the upper end of the metal fitting body 1. The opening / closing plate 6 is formed with a front edge and both side edges on a projecting edge that is fitted onto the bending edge 4 of the holding metal fitting 2, and the rotation shaft 7 is inserted through the support shaft 5 at the center portion thereof. On the surface of the opening / closing plate 6, a washer 9 is externally fitted and a nut 8 is screwed and fixed, and inside the bottom surface of the opening / closing plate 6, a cam plate 10 is integrally externally fitted and fixed, and a required space is provided between the bottom surface and the cam plate 10. 3 is used as a rotational positioning means of the rotary shaft 7 by externally fitting an elastic body 11 (spring washer) that vertically expands and contracts with a stroke (height sufficient for the lower surface of the washer 9 to get over the latter convex portion 13). In this way, the recess 12 is provided on the bottom surface of the washer 9 that is integral with the rotating shaft 7, and the projection 13 that fits into the recess 12 is provided on the surface of the opening / closing plate 6 so as to project.

The pipe connection metal fitting a of the present invention is used when constructing a temporary scaffold with a long pipe 14, and opens the opening / closing plate 6 upward with respect to the metal fitting body 1 and lowers the holding metal fitting 2 downward. Open and the inner surface of the metal fitting body 1 abuts on the outer surface of the pipe 14, the pressing metal fitting 2 is closed upward and its arcuate portion is abutted on the outer surface of the pipe 14, and the open / close plate 6 is closed downward to project the open / close plate 6. The edge is fitted onto the bent edge 4, and the nut 8 on the head of the rotating shaft 7 is rotated by applying a spanner (not shown) to rotate the cam plate 10 to the position shown by the phantom line as shown in FIG. When moved, the cam surface of the cam plate 10 engages with the bent concave portion inside the front edge of the bent edge 4 of the holding metal fitting 2, and the pipe 14 is sandwiched between the inner surface of the metal fitting body 1 and the holding metal fitting 2, and As shown in FIG. 3, the washer 9 which is integral with the rotary shaft 7 at the positioning end in the clamped state has the convex portion 13 of the opening / closing plate 6 fitted in the concave portion 12 thereof. Therefore, it is prevented from loosening.

In the other metal fitting body 1 as well, the pipe 14 is clamped at a required crossing angle (90 ° in this embodiment), similar to the attachment of the pipe 14 to the one metal fitting body 1.

[0010]

[Effect of device]

 According to the pipe connecting fitting of the present invention, the pipes can be sandwiched by the rotation of the rotary shaft within one rotation, so that the construction work such as the temporary scaffolding of the pipe structure is simplified, and the exposed portion of the rotary shaft is simple. Does not come into contact with the rotating shaft at the positioning end during the work and loosen.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a pipe connecting fitting a according to the present invention in a used state.

FIG. 2 is a bottom view of the opening / closing plate 6.

3 is a central cross-sectional view of the opening / closing plate 6 in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Metal fitting body 2 Pressing metal fitting 3 Support shaft 4 Bending edge 5 Support shaft 6 Opening plate 7 Rotating shaft 8 Nut 9 Washer 10 Cam plate 11 Elastic body 12 Recessed portion 13 Convex portion 14 Pipe a Pipe connecting metal fitting

Claims (2)

[Scope of utility model registration request] 1. A metal fitting body having a required width and a side surface L shape has an inner surface formed in a semi-circular arc shape, while a holding metal fitting having an inner surface formed in a semi-circular arc shape is such that the lower end of the holding metal fitting is rotatable with respect to the lower end of the metal fitting body. In the pipe connecting metal fitting, which is attached to the upper end of the pressing metal fitting and the upper end of the metal fitting main body, the metal fittings each having a joining means for both upper ends thereof are rotatably joined to each other at their rear surfaces,
A pipe connecting fitting whose joining means consists of the following. The joining means has a press fitting with a bent edge in which the upper end portion is bent outward in an acute-angled shape, and the fitting body is rotatably attached to the upper end, and the opening / closing plate is attached to the opening / closing plate. A cam plate is fixed to the penetrating rotary shaft at the inner bottom of the opening / closing plate so that the cam plate can be engaged with the bent edge of the metal fitting body. 2. A recess is provided in the bottom surface of a washer fixed to the inner bottom of the opening / closing plate of the rotating shaft, and a projection is formed on the surface of the opening / closing plate so as to fit into the recess. 2. The pipe connecting fitting according to claim 1, wherein an elastic body that expands and contracts with a required stroke is externally fitted between the rotary shaft and the cam plate.