JPS6028860Y2 - Long, small diameter connecting steel pipes with connecting heads such as flares, bridges, or sleeve joints. - Google Patents

Description

[Detailed description of the invention] This invention is a long, small-diameter connecting steel pipe with a connecting head such as a flare, bridge, or sleeve joint. A connecting head 5 such as a flare, bridge or sleeve joint is provided at the distal edge for the purpose of preventing irregular movement of the connecting head 5. A pipe with a length of about 2000 mm or more, which is frequently used as a brake pipe of various vehicles, a fuel pipe, or a refueling or air supply pipe for mechanical equipment, in which the through hole 3 of a tightening screw pipe 4 with a tightening screw 6 is loosely fitted. Regarding the improvement of the structure of a long narrow-diameter mesh connecting steel pipe with a connecting head such as a flare, bridge or sleeve joint having a diameter of approximately 30 mm or less, the said long length It is characterized in that a locking protrusion 1, which is formed by bending the pipe wall outward, is integrally provided on the outer periphery of the small-diameter connecting steel pipe body a, and as an embodiment thereof, the connecting head 5 is provided integrally or by brazing on the end edge of the connecting steel pipe body a.

According to this invention, tightening during bending of a long, small-diameter connecting steel pipe with a connecting head such as a flare, bridge, or sleeve joint, or when transporting a product, prevents irregular movement of the nut. In addition to improving workability during bending,
This is extremely useful as it eliminates the trouble of corrective movement towards the end of these tightening threaded pipes on the vehicle assembly line, etc., making the installation process quick and easy. .

Conventionally, this type of long, small-diameter connecting steel pipe has been provided with a connecting head such as a flare, bridge, or sleeve joint at the end edge, and a tightening screw is provided on the outer periphery of the base end of the connecting head. A structure in which a through-hole of a tightening threaded pipe is loosely fitted is generally known.

With this conventional structure, irregular movement occurs in the incorporated tightening threaded pipe when bending the product or transporting the product.Especially in long products, this movement causes irregular movement. This may affect productivity when bending the product, and there is a risk that work efficiency may be reduced due to the troublesome movement of corrective movement toward each end during subsequent installation on a vehicle assembly line, etc. There are certain drawbacks.

Furthermore, it has been known to provide a stopper on a general elongated body in order to suppress the sliding range of a member attached to the elongated body in a sliding manner; The long body and the attachment member are neither the long small-diameter connecting steel pipe nor the tightening threaded pipe in the invention of this application, so they are immediately referred to as the long small-diameter connecting steel pipe with a connecting head of the invention of this application. cannot be applied to

In contrast, the invention of this application eliminates these drawbacks of the conventional structure and constitutes a long sub-connection steel pipe with a connecting head such as a flare, bridge, or sleeve joint. According to the invention, a through-hole 3 of a tightening screw pipe 4 is provided with a connecting head 5 such as a flare, a bridge, or a sleeve joint on the distal edge, and a tightening screw 6 is provided on the outer periphery of the proximal end 2 of the connecting head 5. A locking protrusion whose outer wall is bent outward is provided on the outer periphery of the long, small-diameter connecting steel pipe (a) at an appropriate distance from the outer end surface of the tightening threaded pipe 4 in the loosely fitted long, small-diameter steel pipe a. Since the edge 1 is integrally protruded, tightening during bending of a long small diameter steel pipe or transporting a product prevents irregular movement of the nut and improves workability during bending. At the same time, it eliminates the trouble of corrective movement toward the end of these tightening threaded pipes on the vehicle assembly line, etc., and the installation work can be done quickly and easily. Very useful.

[Brief explanation of the drawing]

Figure 1 is a layout diagram of one implementation structure of this invention, and Figure 2 is the
Fig. 3 shows an enlarged side view of part A, and Fig. 3 shows its longitudinal sectional view. In the figure, a indicates a long narrow diameter steel pipe, 1 indicates a locking flange, 2 indicates a base end, 3 indicates a through hole, 4 indicates a tightening threaded pipe, and 5 indicates a connecting head.

Claims (2)

[Scope of utility model registration request] (1) A connecting head 5 such as a flare, bridge or sleeve joint is provided at the distal edge, and the base end 2 of the connecting head 5 is provided.
A tightening threaded pipe 4 with a tightening screw 6 provided on the outer periphery of the
In the long small-diameter steel pipe body a into which the through-hole 3 is loosely fitted, the outer wall of the long thin-diameter steel pipe body a is placed on the outer periphery of the long small-diameter steel pipe body a, at an appropriate distance from the outer end surface of the tightening threaded pipe 4). A long narrow diameter connecting steel pipe with a connecting head such as a flare, bridge or sleeve joint, characterized in that a locking flange 1 is integrally protruded. (2) The connecting head 5 is a flare, a bridge, a sleeve joint, etc. according to claim 1 of the utility model registration claim, in which the connecting head 5 is provided integrally or by brazing on the end edge of the connecting steel pipe body a. A long narrow diameter connecting steel pipe with a connecting head.