JPH0244893Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a flange tool that expands and crushes the cut end of a flexible tube to form a flange.

(Prior art) When installing a gas water heater, bath kettle, etc.
A flexible tube 2 in which ring-shaped peaks 1 are formed at regular intervals on the outlet or a part of the piping as shown in Fig. 9.
use. Conventionally, this flexible tube 2 used a commercially available product with a predetermined length to which a cap nut 3 was attached in advance, but in recent years, due to changes in housing conditions, commercially available products have come to have an excess or deficiency in length. People are beginning to use long products by cutting them to the required length.

By the way, in order to attach the cap nut 3 to the flex tube 2, if the cut end remains cut, it will come off, so the cut end is expanded and crushed to form a flange 4.

As shown in FIG. 10, this flange tool has semicircular grooves 5, 5a formed in the center, and protrusions 6, 6a forming semicircular concave spaces on the inner surfaces of the grooves 5, 5a. A holder 8 is constructed using two holder pieces 7 and 7a, which are arranged around the periphery as shown in FIG. A cylinder consisting of a tube 9 and a punch 10 is used. Here, the protrusions 6, 6 of the holder pieces 7, 7a
A is designed so that when both holder pieces 7 and 7a are brought together, the peak 1 of the flexible tube 2 is caught. To remove the flange using this tool, as shown in FIG. Then, fit the small diameter part into the holding cylinder 9, and then insert the punch 1.
This was done by inserting the 0 as shown in D and hitting the punch 10 with a hammer.

(Problem that the invention attempts to solve) However, since such a tool has a large number of parts,
The process of removing the flange became complicated, and some parts were sometimes lost or forgotten.

Also, depending on the object to be attached to the flex tube 2, different diameters may be used, for example 1/2 inch and 3/4 inch, so prepare two types of tools depending on the diameter of the flex tube 2. I had to.

For this reason, there was a need for a flange tool that had a small number of parts, connected members, and could be used to flange two types of flexible tubes 2 having different diameters.

(Means for Solving the Problems) In the present invention, the flange tool is configured as follows.
That is, a semicircular straight groove is formed on the entire length of the smooth surface of the block body, and protrusions are provided on the inner surface on both sides in the longitudinal direction of the groove so that the tips of the protrusions form semicircular concave spaces with different diameters. A holder in which two holder pieces are connected in a hinge structure with the grooves of both holder pieces parallel and the grooves and protrusions forming the same semicircular concave space symmetrical on the left and right, and a holder with a cylindrical shape at the tip of the shaft. The punch head has a smaller diameter than the circular hole formed by the grooves of both holder pieces when the smooth surfaces of both holder pieces are brought together, and the punch head has a circular hole formed by the protrusion. The diameter of the shaft is larger than that of the larger one, and the diameter of the circular hole formed by the protrusion of the shaft is smaller than that of the smaller one.

(Function) Since this tool has two holder pieces connected in a hinge structure, both holder pieces can be opened and closed. Therefore, the punch and flexible tube are set with both holder pieces open, and after they are closed, the punch is struck with a hammer to release the flange. The head of the punch is inserted into the groove between the protrusions with the holder piece open, and the flexi tube is inserted into one of the grooves so that its peaks are located on the protrusion. In this case, since protrusions forming different semicircular concave spaces are provided on both sides of the groove, flexible tubes with different diameters can be set.
After both are set, when both holder pieces are closed, the grooves and protrusions face each other, the former forming a circular hole along the entire length of the holder, and the latter surrounding the flexi tube at its peak. Here, the diameter of the circular hole formed by the protrusion on the shaft of the punch is smaller than that of the smaller one, so the head can be moved no matter which side of the holder the shaft is protruded from. If you hit it with a hammer, you can spit it out.

(Example) Figures 1 to 7 show examples of the flange tool according to the present invention, and the holder 21 has a semi-cylindrical shape with the same shape and size as shown in Figures 1 to 5. The holder pieces 22 and 22a are connected by a hinge 23, and the holder pieces 22 and 22a are symmetrical. Each holder piece 22, 22a
There are semicircular straight grooves 2 along the entire length of the smooth surface of the
4 and 24a are formed parallel to each other and symmetrical on the left and right sides, and the large diameter portions 25 and 25 have the same diameter in the center.
a, both sides thereof are medium diameter portions 26, 26a and small diameter portions 27, 27a of the same diameter;
The outlet of 27a is the medium diameter portion 26, 26a. Here, the radius of the medium diameter portions 26, 26a is slightly larger than the radius of the crest of the 3/4 inch flex tube, and the radius of the small diameter portions 27, 27a is slightly larger than the radius of the crest of the 1/2 inch flex tube. ing. And the medium diameter portions 26, 26a and the small diameter portion 2
Projections 28, 28a and 29, 29a are provided around the inner surface of the large diameter portions 25, 25a of the large diameter portions 7, 27a so as to form semicircular concave spaces. These protrusions 28, 28a and 29, 29a are such that when the holder pieces 22, 22a are put together, the 3/4 inch ridge of the flexible tube will be caught on the former, and the 1/2 inch ridge will be caught on the latter. It's becoming like that.

A concave portion 30 and a convex portion 31 are provided symmetrically on each side of the holder pieces 22 and 22a, respectively.
When the holder pieces 22, 22a are put together, they fit together, and even if the punch is hit with a hammer when removing the flange, a large load is not applied to the hinge 23, and both holder pieces 22, 22a are prevented from shifting. be.

A hinged threaded rod 33 of a wing nut 32 is pivotally attached to one end of the holder piece 22.
A hole 34 into which a threaded rod 33 is inserted is provided at one end of 2a. The periphery of the hole 34 is ground flat and serves as a seat for the wing nut 32, as shown in FIG. Therefore, holder 2
2 and 22a, insert the threaded rod 33 into the hole 34, and tighten the wing nut 32. Both holder pieces 22,
22a is fixed in a cylindrical shape.

Figures 6 and 7 show the punch 35, with the head 3
6 is a cylindrical body with a tapered tip, the diameter is large enough to slide on the large diameter portions 25, 25a of the holder pieces 22, 22a, and a 1/2 cylindrical body is formed at the center of the tip.
A disc-shaped projection 37 smaller than the inner diameter of the inch flex tube is provided. Shaft 38 of punch 35
has a circular cross section, and its radius is the protrusion 2
The radius is smaller than the radius of the semicircular concave space formed by 9 and 29a. A handle portion 39 is provided at the end of the shaft 38, the radius of which is smaller than the medium diameter portions 26, 26a of the straight grooves 24, 24a.

To flange a 3/4 inch flexible tube with this flange tool, use the holder pieces 22, 22a.
Open the holder piece 22 as shown in FIG.
Insert the head 36 of the punch 35 into the large diameter part 25 of the straight groove 24 so that the shaft 38 is on the small diameter part 27 side of the straight groove 24.
Next, the flex tube 2 is inserted into the protrusion 28 between the ridges 1 so that the cut end is inside the protrusion 28. When the other holder piece 22a is closed in this state, the convex part 31 of the holder piece 22a
2, and the hole 34 is aligned with the threaded rod 33. Then, the straight grooves 24 and 24a, the protrusions 28 and 28a, and 29 and 29a are also combined, allowing the punch 35 to move through the circular hole formed by the large diameter parts 25 and 25a, and the flexi tube 2 also has a space between the ridges 1. protrusion 28,
28a. Then, when the threaded rod 33 is erected and inserted into the hole 34 and the wing nut 32 is tightened, both the holder pieces 22, 22a are fixed in a cylindrical shape. When the holder 21 is raised in this state,
Since the handle portion 39 of the punch 35 is thinner than the medium diameter portion 26, the punch 35 descends until the head 36 hits the end of the flex tube 2. Then, when the handle 39 of the punch 35 is struck with a hammer, the tip of the tapered head expands while being crushed, and the collar 4 is formed.

To flange the 1/2 inch flexi tube 2, the shaft 38 of the punch 35 is attached to the holder piece 22.
The middle diameter part 26 side of the flexible tube 2
Set it so that it is on the protrusion 29, 29a side,
You can do it in the same way as above.

(Effects) As described above, since the tool of the present invention includes only the holder and the punch, which are two holder pieces connected to each other, the number of parts is smaller than that of the conventional tool, and there is no risk of losing the tool. Also, to remove the flange, all you have to do is open the holder piece, set the punch and flexible tube, then close it and hit the punch with a hammer.
Easy to work with. In addition, protrusions that hold the ridges of the flexi tube are provided on both sides of the holder, and the punch head inserted between the protrusions can be pushed from either side, so one holder can handle different diameters. Two types of flexi tube flanging can be performed.

[Brief explanation of drawings]

Fig. 1 is a plan view of the holder with the holder piece opened, Fig. 2 is a sectional view at - in Fig. 1, and Fig. 3 is a sectional view at - in Fig. 2.
The dotted line portion shows the holder piece 22a when the holder piece is closed. Figure 4 is - of Figure 2.
3, the dotted line portion represents the holder piece 22a when the holder piece is closed, as in the case of FIG.
It shows. FIG. 5 is a partial side view of the holder piece 22a seen from the direction A in FIG. 1. FIG. 6 is a side view of the punch, and FIG. 7 is a sectional view of the punch. FIG. 8 is a plan view of the punch and flexible tube set on one holder piece. FIG. 9 is a side view of the flex tube with the flange exposed. Figure 10 shows a conventional flange tool, where A is a side view of the holder with the flexible tube set on one holder piece, and B is a side view of the holder with the flexible tube held by the holder and fitted into the holding cylinder. C is a perspective view of the punch, and D is a perspective view of the punch inserted into the holder. 1... Mountain, 2... Flexi tube, 3... Bag nut, 4... Brim, 5, 5a... Groove, 6, 6a
...Protrusion, 7,7a...Holder piece, 8...Holder, 9...Holding tube, 10...Punch, 21...
Holder, 22, 22a...Holder piece, 23...
...Hinge, 24, 24a...Straight groove, 25, 25a
...Large diameter part, 26, 26a...Medium diameter part, 27, 2
7a...Small diameter part, 28, 28a...Protrusion, 29,
29a... protrusion, 30... recess, 31... protrusion,
32...wing nut, 33...threaded rod, 34...
Hole, 35... Punch, 36... Head, 37... Disc shaped projection, 38... Shaft, 39... Handle.

Claims (1)

[Scope of utility model registration request] An identical holder in which a semicircular linear groove is formed on the entire length of the smooth surface of the block body, and protrusions are provided on the inner surface on both sides of the groove in the longitudinal direction so that the tips of the protrusions form semicircular concave spaces with different diameters. A holder in which two pieces are connected in a hinge structure with the grooves of both holder pieces being parallel and the grooves and protrusions forming the same semicircular concave space being left and right symmetrical, and a cylindrical head at the tip of the shaft. It consists of a punch with a fixed part,
The punch head has a smaller diameter than the circular hole formed by the grooves of both holder pieces when the smooth surfaces of both holder pieces are brought together, and a diameter larger than the larger diameter of the circular hole formed by the protrusion. A flexible tube flange tool characterized in that the diameter of the circular hole formed by the protrusion on the shaft is smaller than that of the smaller one.