JPH0341186Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a structure for interconnecting the ends of metal pipes installed as supply paths for oil and air in automobiles, various machines, equipment, etc. This is related to the improvement of

[Prior Art] Conventionally, as shown in FIG. 4, for example, this type of connection structure has a plurality of slits 12, .
The vicinity of the end of the local tube 14 is inserted into the connecting end of one tube 11 having an annular groove 13 therein, and an outer circumferential surface 15 where the annular groove 13 and the tube 14 are located. The slits 12 were connected by tightening the slits 12 with a binding band 17 while the seal ring member 16 was mounted in a pinched manner between the slits 12 and the slits 12.

[Problems to be Solved by the Invention] However, in such a conventional connection structure, the cable tie 17 is often
This may cause movement or misalignment of the seal itself, causing loosening of the binding, leading to problems with mutual connection, and deterioration of the function of the seal over a long period of time, which tends to induce leakage. This method has problems such as being expensive due to the use of parts.

In order to extremely effectively solve the above-mentioned conventional problems, the present invention provides a plurality of long holes in a row at the end of one tube body, and makes the front side inside the long holes a pressure-receiving sheet surface. An annular inclined wall is provided outward, and an annular squeeze wall with the front side as a pressing sheet surface is provided at or near the tip of the other tube body, and a plurality of annular grate walls are provided rearwardly from the squeeze mouth wall. Protruding walls are provided, one tube body is inserted into the other tube body, the pressure receiving sheet surface and the pressing sheet surface are brought into contact with each other, and the overlapping elongated hole portions located between the protruding walls are tightened. By deforming and connecting in a reduced diameter shape, even under vibration conditions, there is no need to worry about the cable ties moving, loosening due to misalignment, or causing problems, and ensuring secure connection and retention over a long period of time. Needless to say, the purpose is to propose a connection structure that can apply strong surface pressure between the surfaces of mutually abutting sheets and connect them in a tight manner by simple operation using a cable tie. It is something to do.

[Means for solving the problem] The present invention has a plurality of long holes arranged in a row in the end wall in the direction of the peripheral wall, and a front side in the connecting direction inside the long holes in the axial direction. One tube body is provided with an annular inclined wall outward with the pressure receiving seat surface, and an annular squeeze mouth wall with the front side as the pressure seat surface is provided at or near the tip, and the axis is and the other tube body provided with a plurality of annular protruding walls along the peripheral wall surface at the rear in the core direction, and the one tube body is inserted into the other tube body, and the pressure receiving sheet surface and the pressing sheet surface are The ends of the metal tubes are brought into contact with each other, and the long holes on one side of the tube body, which are located between the protruding walls of the tube bodies and overlap, are tightened and deformed into a diameter-reduced shape to connect the ends of the metal tubes. Furthermore, the diameter reduction shape deformation is performed using a cable tie, and the one tube body side is pulled to create a surface pressure between the abutting surfaces of the pressure receiving sheet surface and the pressing sheet surface. A hanging claw is provided on the wall of the end of the one pipe body located on the outside and is located inside the elongated hole and protrudes rearward in the axial direction. The tube is connected by being bent and supported on the opposing protruding wall portion of the other tube body.

[Example] Hereinafter, an example of the present invention will be described based on the drawings. Fig. 1 is a partially cutaway cross-sectional view showing the interconnection structure of the metal tube ends of the present invention before tightening, and Fig. 2 The figure is a state diagram after tightening in Figure 1, and Figure 3 is a diagram equivalent to Figure 2 showing another embodiment, in which 1 indicates a plurality of elongated holes 2 in the end wall surface 1' in the peripheral wall direction. , . . . are arranged in a row, and an annular inclined wall 3 is provided on the inside of the elongated hole in the axial direction, with the front side in the connecting direction serving as the pressure-receiving seat surface 3'. 4
is provided with an annular squeeze mouth wall 5 having an inwardly inclined front side as a pressing sheet surface 5' at or near the tip,
The other tube body is provided with a plurality of annular protruding walls 6 along the circumferential wall surface behind the squeeze mouth wall portion in the axial direction, and the connection holding portion on the one tube body 1 side is provided with the tube body 4 side. The pressure-receiving sheet surface 3' and the pressing sheet 5' are brought into contact with each other by inserting the vicinity of the end thereof.

Reference numeral 7 is a binding band formed by tightening from the outside the elongated hole 2, ... on the tube body 1 side, which is located between the projecting walls 6 on the tube body 4 side and overlaps in the inserted state, With the tightening, a forward tension is generated on the pipe body 1 side, and surface pressure is applied between the contact surfaces of the pressure receiving sheet surface 3' and the pressing sheet 5', so that the pressure receiving sheet surface 3' and the pressing sheet 5' are closely connected. It is.

In FIG. 3, when one binding band 7 is provided, 8 is a long hole 2,
. . . This is a hanging claw located inside and protruding rearward in the axial direction, and is bent and hung on the opposing projecting wall 6 to perform the same function as the binding band 7.

It goes without saying that instead of using the binding band 7, it may be crimped from the outside in the radial direction to bind and connect.

[Function] Since the present invention is configured as described above, the connection between the tubes 1 and 4 is inserted between the connecting holding portion and the vicinity of the end, so that the tube body 4 is positioned between the projecting walls 6 on the side of the tube 4. The elongated holes 2, . The force applies a strong surface pressure between the contact surfaces of the pressure receiving sheet surface 3' and the pressing sheet surface 5', resulting in a tight connection.

[Effect of the invention] As explained above, the connection structure of the ends of metal tubes according to the invention includes a diameter-reduced shape at the elongated hole 2 between the protruding walls 6 on the tube body 4 side using the binding band 7 or the like. In this deformed state, the tensile force on the pipe body 1 side due to the tightening causes a strong surface pressure to be applied between the contact surfaces of the pressure receiving sheet surface 3' and the pressing sheet surface 5', resulting in a tight seal. Due to this connection structure, there is no worry about the movement of the cable ties 7, loosening due to misalignment, or problems caused by dislodgement, etc., even when the cable ties are installed under vibration conditions, and can be used for a long period of time. It is possible to securely connect and hold the cable for the entire length of the cable.
This is an extremely useful structure for connecting the ends of metal pipes, as it is possible to apply strong surface pressure between the abutting sheet surfaces and connect them in a tight manner through simple operations such as tightening. be.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway cross-sectional view of a metal tube end interconnection structure before tightening, showing an embodiment of the present invention, Fig. 2 is a state diagram of Fig. 1 after tightening, and Fig. 3 is FIG. 2 is a view corresponding to another embodiment, and FIG. 4 is a partially cutaway sectional view of a conventional connection structure. 1... Pipe body, 1'... Wall part, 2,... Long hole, 3
...Annular inclined wall, 3'...Pressure-receiving seat surface, 4...
Pipe body, 5... annular squeeze mouth wall, 5'... pressed sheet surface,
6... protruding wall, 7... cable tie, 8... hanging support claw.

Claims (1)

[Claims for Utility Model Registration] 1. A plurality of long holes 2,... are arranged in a row in the end wall 1' in the peripheral wall direction, and a front surface in the connecting direction is provided inside the long holes in the axial direction. Pressure-receiving seat surface 3'
One tube body 1 is provided with an annular inclined wall 3 slanting outward, and an annular squeezing mouth wall 5 whose front side is a pressing sheet surface 5' is provided at or near the tip, and from the squeezing mouth wall. The other tube body 4 is provided with a plurality of annular protruding walls 6 along the peripheral wall surface at the rear in the axial direction, and the other tube body 4 is inserted into the one tube body 1 to form the pressure receiving seat surface. 3' and the pressing sheet surface 5' are brought into contact with each other, and the elongated hole 2 on the tube body 1 side, which is located between the protruding walls 6 of the tube body 4 and overlapped with each other, is tightened to reduce the diameter. A structure for connecting metal tube ends to each other, characterized in that the metal tube ends are connected in a deformed manner. 2 Utility Model Registration Scope of Claims 1. The structure for interconnecting metal tube ends, as set forth in claim 1, characterized in that the diameter-reducing deformation is performed by a binding band 7. 3 Utility Model Registration Claims 1. In claim 1, the one tube 1 is pulled in the axial direction to apply surface pressure between the contact surfaces of the pressure receiving sheet surface 3' and the pressing sheet surface 5'. A structure for connecting metal tube ends to each other, characterized in that the ends of the metal tubes are connected to each other in a tightly packed manner. 4. In the scope of claim 1 of the utility model registration, the wall portion 1' of the end on the side of the one tube 1 includes:
The elongated hole 2,... is characterized in that it is bent and connected to the opposing projecting wall 6 on the tube body 4 side by a hanging claw 8 located inside and protruding rearward in the axial direction. Connection structure between metal tube ends.