JPH0338550Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention mainly relates to a fastener for various types of hoses such as spiral hoses and standard hoses used in the general market.

(Prior art) Various types of fasteners have been proposed in the past, and one example is Japanese Utility Model Application Publication No. 125329/1983, which tightens a pair of nuts, pulls up a protruding piece, and connects a hose. It compresses the ring, and has the disadvantage that each nut must be tightened evenly, which is time consuming and time consuming.

In addition, since the hose fastening ring has two hose receiving surfaces on the lower side and one hose receiving surface on the upper side, the tightening force is weak and the tightening force does not work evenly on the hose, causing damage to the inside of the hose. When the pressure rose, there was a risk of liquid or air leakage from the tightened parts.

(Technical Problem) Therefore, the present invention was made in view of the shortcomings of the prior art, and it is an object of the present invention to propose a fastening tool that is easy to tighten, strong, and exerts a well-balanced tightening force. is a technical issue.

(Technical means) In order to solve the above-mentioned technical problem, in the present invention, a coil-shaped tightening body is fixed to a pair of arc-shaped metal strips, two lower tightening parts are formed, and an upper tightening part is formed. When tightening the bolts, there are three parts.

Specifically, as shown in the illustrated embodiment, the configuration is as follows.

Reference numeral 1 denotes a tightening tool body, which mainly includes a coil-shaped tightening body 2 wound several times and a pair of arc-shaped metal strips 3.
and one bolt/nut mechanism 4.

The coil-shaped tightening body 2 is made of metal and is wound approximately 2 to 2.5 times, and part P and Q thereof are welded 5 or the like to the pair of belt-shaped bodies 3 described above.
are fixed to each. Since the fixing positions of the P and Q portions are located at the lower part of the arc-shaped belt-shaped body 3, the tightening range of the coil-shaped tightening body 2 can be widened.

That is, the radius R can be greatly reduced.

Moreover, the compressive force f during tightening is applied to the hose 6 on average.

2A and 2B are the lower tightening portions of the tightening body 2, and are composed of two pieces.

2C, 2D, and 2E are the upper tightening portions of the tightening body 2, and are composed of three pieces.

The upper tightening portions 2C and 2E substantially function as tightening portions at the time when the respective tightening portions 2C and 2E press into the inner surfaces 3A and 3B of the opposing strips 3 and 3, respectively.

4A is a bolt, 4B is a nut, 7 is a washer, 8 is a bolt insertion hole drilled in the flange 9 of the belt-shaped body 3, and 10 is an upper tapered part formed at the end S of the upper tightening parts 2C and 2E, which is an arcuate belt-shaped part. inner surface 3 of body 3
It is formed to smoothly penetrate and press into contact with A and 3B.

Further, reference numeral 11 is a lower tapered portion which is formed to prevent damage to the surface of the hose 6.

12 is a threaded recess of the hose 6 into which the clamping body 2 is inserted. It goes without saying that a hose 6 without a threaded recess may also be used.

Reference numeral 13 denotes a connecting fitting fitted to the hose 6.

(effect) The above technical means works as follows.

As shown in FIG. 5, the tightening tool main body 1 is fitted onto the hose 6. After that, when the nut 4B is screwed and the pair of band-shaped bodies 3 are drawn together relatively, the coil-shaped tightening body 2 has a small radius R, and the upper tightening parts 2C and 2E are connected to the opposing band-shaped bodies 3, respectively. The hose 6 is pressed against the inner surfaces 3A and 3B of the hose 6 in the direction of the arrows U and V, and the compressive force f is evenly applied to the hose 6.

Therefore, the hose 6 and the connecting fitting 13 are tightly crimped together.

(Effects) Since the present invention has the structure and operation as described above, it has the following unique effects.

(a) It is easy to operate on-site because only one bolt/nut mechanism needs to be tightened.

(b) When tightening the hose, there are three upper tightening sections, and together with the two lower tightening sections, there is an advantage that a strong tightening force is applied evenly.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the product of the present invention, Fig. 2 is a front view, Fig. 3 is a plan view, Fig. 4 is a schematic perspective view of a coiled tightening body, and Fig. 5 is a use of the product of the present invention. FIG. 3 is a plan view of main parts showing the state. 1...Tightening tool body, 2...Tightening body, 3...
Band-shaped body, 4...Bolt/nut mechanism, 2A, 2B
...Lower tightening section, 2C, 2D, 2E... Upper tightening section, 9... Flange section.

Claims (1)

[Claims for Utility Model Registration] (1) A coil-shaped tightening body 2 is fixed to a pair of arc-shaped belt-shaped bodies 3 to which a tightening force is applied by a single bolt/nut mechanism 4, and the tightening body 2
, at least two lower tightening portions 2A, 2B.
and at least three upper tightening portions 2C, 2D,
2E, and when the bolt/nut mechanism 4 is tightened, the two upper tightening parts 2C, 2E enter and press into the inner surfaces 3A, 3B of the pair of opposing band-shaped bodies 3, respectively. Fasteners. (2) A fastener for a hose or the like, as set forth in claim 1 of the utility model registration, in which the coil-shaped fastener 2 is fixed to the lower side of the pair of band-like members 3. (3) A fastener, such as a hose, as set forth in claim 1 of the utility model registration, in which an upper tapered part 10 and a lower tapered part 11 are formed at the ends S of the upper fastening parts 2C and 2E.