JPS5929128Y2 - pipe coupling device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a pipe coupling device, which allows a plurality of pipes to be connected easily and reliably.

Examples of uses for connecting multiple rods of the same type include ■fishing rods, ■water chestnut rods for catching abalone, turban shells, sea cucumbers, etc. from the boat, ■screw rods for catching kelp, and ■balls for surveying. However, in the past, it was common to simply fit together wooden sticks, bamboo, etc., or to tie them together with strings or ropes.

The rods used for these purposes do not have to be round rods as long as there are no problems with their strength; they can be made of pipe material. Even if there is an FRP pipe that has sufficient strength, is lightweight, and can be obtained at low cost, there is a problem that it cannot be used for the above-mentioned purpose.

This idea was made in view of this point.

An embodiment of this invention will be described with reference to FIGS. 1 and 3. Reference numerals 1 and 2 are FRP pipes, which are joined at a portion indicated by the reference numeral 3.

A large diameter portion 5 of a different diameter pipe 4, the details of which will be described later, is inserted into the tip of the pipe 1, and is integrally fixed by a pin 7 that passes through the pipe diametrically and is caulked 6 at both ends.

8 and 9 are holes for inserting the pin 7. The different diameter pipe 4 has a stepped shape from approximately the center thereof, and the narrow diameter portion 10
A small hole 11 is provided at a predetermined location, for example, in the center of the narrow diameter portion 10.
is drilled in pipe 2, and the pipe 2 is connected to pipe 1.
Small hole 1 is placed at the position that matches small hole 11 when the
2 is drilled.

Note that it is convenient for use if one more small hole 12 is provided at a position diametrically opposed to the pipe 2 (indicated by a broken line in the figure).

What is shown in FIG. 2 is a stop member 13.

That is, this stopper member 13 has a cylindrical boss portion 14 whose outer diameter is slightly smaller than the inner diameter of the narrow diameter portion 10 of the pipe 4 of different diameters and which can fit into the narrow diameter portion 10, and this boss. a pin 18 having a hole 15 provided in a defined manner in the portion 14 and a flange portion 17 loaded into the hole 15 by a spring 16 so as to be biased to protrude in the radial direction of the boss portion 14; It is made up of.

The diameter of the pin 18 is slightly smaller than the small diameter portion 10 and the small holes 11, 12 of the pipe 2, and therefore the pin 18 is loosely inserted into the small hole 11, 12 until it comes into contact with the flange portion 17. It will be possible to insert it.

A driver receiving groove 19 of an appropriate depth is provided at one end of the boss portion 14.
is provided to receive the cutting edge of a screwdriver (not shown).

Note that this driver receiving groove may have other shapes depending on the type of driver.

In this device configured in this way, first, the boss portion 1
A spring 16 and a pin 18 are loaded into the hole 15 of the pipe 4, and while pushing the pin 18 against the spring 16, the boss part 14 is pushed into the inside of the narrow diameter part 10 of the different diameter pipe 4.

At this time, if the cutting edge of the screwdriver is applied to the driver receiving groove 19 of the boss portion 14, the work will be facilitated.

In this way, when the boss portion 14 is rotated while being pushed into the narrow diameter portion 10 and the pin 18, which is biased in the protruding direction by the spring 16, is aligned with the small hole 11, the pin 1
8 protrudes from the small hole 11 up to the flange portion 17.

The tip of the pipe 1 is always kept in this state.

If the pipe 2 is brought close to the pipe 1 with the small diameter part 10 of the different diameter pipe 4 exposed from the tip, and the small diameter part 10 is pushed into the pipe 2 to align the pin 18 with the small hole 12, the pin 1
8 protrudes from J'JL12, and pipe 1 and pipe 2 are connected.

When inserting the narrow diameter portion 10 of the different diameter pipe 4 into the pipe 2, it is preferable to push the pin 18 in by hand.

When separating the pipe 1 and the pipe 2, it is sufficient to push the pin 18 by hand and pull them apart.

Next, another embodiment of this invention will be described with reference to FIG. 4. In this case, a pin 20 is provided protruding in the radial direction near the tip of the pipe buoy of different diameters, and a pin 20 is fitted into the pipe 2'. The receiving pipe 21 is provided with a cutout hole 23 having a key portion 22 bent in the circumferential direction of the pipe γ only at its tip.

In this embodiment, when connecting pipe 7 to pipe 1,
Align the pin 20 with the notch hole 23 and pull it in against the spring 16 to insert the narrow diameter part 10 of the different diameter pipe 4' into the receiving pipe 21.
, and when the flange portion 24 of the different diameter pipe 4' and the flange portion 25 of the receiving pipe 21 come into contact with each other, rotate the pipe 7 by a slight angle, and the pin 20 will fit into the key portion 22. .

At this time, the pin 18 is inserted into the small hole 26 of the receiving pipe 21 (
/J4L12 of the pipe 7) and protrude outside from the small hole 12 of the pipe 2'.

In this embodiment, the receiving pipe 21 is fitted to the pipe 2', but it is not necessary to do so, and the pipe 1 itself may be provided with a cutout hole 23.

Components with the same reference numerals as those shown in FIGS. 1 to 3 are the same members, and therefore their explanations will be omitted.

Since this invention has the above-mentioned configuration, it is possible to connect a plurality of pipes easily and reliably, making it convenient for a variety of uses.

When inserting the stop member into a different diameter pipe, engage the tip of the screwdriver in the driver receiving groove of the stop member and turn the driver, so that the stop member can freely change its orientation inside the different diameter pipe. Therefore, when inserting the stopper member, there is no need to consider alignment (direction alignment) between the small hole of the pipe of different diameter and the pin of the stopper member, and the work can be carried out easily and quickly.

In manufacturing this pipe coupling device, it goes without saying that the inner diameter and outer diameter dimensions of the pipes 1, 2, 2', the pipes 4, 4' of different diameters, and the receiving pipe 21 must be adapted to each other. do not have.

Furthermore, since the boss portion 14 and the spring 16, pin 18, etc. incorporated in the boss portion 14 can be disassembled, they can be easily replaced or inspected in the event that they are damaged or their performance deteriorates. There are also advantages.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a main part of an embodiment of this invention, FIG. 2 is a perspective view of the stopper member 13, FIG. 3 is a perspective view of FIG. 1, and FIG.
The figure is a longitudinal sectional view of a main part of another embodiment of this invention. 1, 2, 2'...Pipe, 4, 4'...
... Different diameter pipe, 5 ... Large diameter part, 7, 18.
...Pin, 10...Small diameter part, 11, 12
...Small hole, 13... Stopping member, 14.
... Boss part, 15 ... Hole, 16 ...
...Spring, 1T...Flange part, 19...
...Driver receiving groove.

Claims (1)

[Scope of utility model registration request] At the joining part of multiple pipes, a stepped pipe of different diameters is provided from the center of the pipe, and the large diameter part of the different diameter pipe is inserted and fixed at the tip of one pipe, and the small diameter part is fixed. A small hole is bored at a predetermined location, and apart from this, a pin with an outer diameter that can be fitted into the narrow diameter portion protrudes in the radial direction inside the hole, and a driver receiving groove is formed at one end. A stop member is provided, and the stop member is inserted into the narrow diameter portion from the front end of the narrow diameter portion of the different diameter pipe to cause the pin to protrude from the small hole of the narrow diameter portion, and a stop member is provided at the base end of the other pipe.・Drill a small hole with the same diameter as the hole, insert the base end of the other pipe into the narrow diameter part of the different diameter pipe attached to the tip of the one pipe, and fix it with the pin. A pipe joining device characterized by: