JP2527836Y2 - Hose neck breaker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application field] The present invention relates to a hose neck break prevention device.

More specifically, the present invention relates to an improvement in a preventive device for preventing a neck connected to a connecting fitting from being bent near a connection end to the connecting fitting.

[Related Art] Conventionally, as a hose neck break prevention device, for example, a metal wire is formed by spirally winding a metal wire, and can be screwed into a female screw portion engraved on a connection fitting to which the hose is connected. There is known a cover having a cover fitted to the outside of a hose connected to a connection fitting, and a mounting nut for tightening a screw portion of the cover to the connection fitting toward the connection fitting.

This conventional hose neck break prevention device reinforces the vicinity of the connection end of the hose connected to the connection fitting to the connection fitting with an elastic cover portion, and the cover portion bends and responds to external pressure and the like. This is to prevent the hose from breaking.

[Problem to be Solved by the Invention] In the above-mentioned conventional hose neck break prevention device, although the cover is screwed to the connection fitting by its spiral shape and further tightened by the mounting nut, it is attached to the connection fitting. There is a problem that the cover portion has a low attachment strength against a tensile force in the axial direction, and the cover portion is easily detached from the connection fitting during use.

Furthermore, since the cover part is made of thin metal wire and the supporting area of the hose is small, and the spiral terminal of the cover part is open and has elasticity in the axial direction, the internal shape is formed by bending deformation of the cover part due to external pressure etc. Is crushed and the hose is flattened, so that there is a problem that a neck break cannot be effectively prevented.

SUMMARY OF THE INVENTION The present invention has been made in consideration of such problems, and has as its object to provide a hose neck-break preventing device which has high attachment strength and can effectively prevent neck break.

[Means for Solving the Problems] In order to solve the above-mentioned problems, a hose neck break prevention tool according to the present invention is integrated with a mounting portion that can be fixed to a fitting to which the hose is connected, and is integrated with the mounting portion. A spiral cover fitted to the outside of the hose connected to the connection fitting, wherein the cover is formed in a spiral shape with a band having a certain width, and the spiral end is closed in an annular shape. Means.

[Operation] According to the above-described means, since the cover portion is integrated with the mounting portion fixed to the connection fitting, the mounting strength of the cover portion is increased, and the cover portion is detached from the connection fitting during use. Will not be. Also, since the cover part is made of a band material with a large support area and its spiral terminal is closed in a ring shape to prevent expansion and contraction in the axial direction, the internal shape is not crushed by bending deformation of the cover part. Because there is no hose, the hose will not be flattened.

For this reason, the problem of providing a hose neck break prevention tool which has high attachment strength and can effectively prevent neck breakage is solved.

[Embodiment] Hereinafter, an embodiment of a hose neck break prevention device according to the present invention will be described with reference to the drawings.

In this embodiment, a mounting part 1 made of a metal material and a cover part 2 made of a synthetic resin material are shown.

The mounting portion 1 is entirely formed in a cylindrical nut structure having an inner diameter through which the hose H can be inserted, and a male screw (not shown) engraved on the outer peripheral surface of the connection fitting N at the front of the inner peripheral surface. ) Is formed with a female screw 11 which can be screwed, and an annular groove 12 for mounting the cover 2 is formed in the rear portion of the outer peripheral surface.

The cover portion 2 is entirely formed in a spiral cylindrical shape having an inner diameter through which the hose H can be inserted, and a cylindrical mounting portion 21 that can be fitted to the outer peripheral surface of the mounting portion 1 is provided at a front portion. A spiral portion 22 is provided in which a strip having a certain width is spirally wound. An annular projection 23 that engages with the annular groove 12 of the mounting portion 1 is provided on an inner peripheral surface of the mounting portion 21.
The cover 2 is integrally attached to the attachment 1 by the engagement of the annular projection 23 and the annular groove 12 with the attachment 21 and the attachment 1. Also, this spiral part 22
The terminal 22 'is closed in an annular shape to prevent expansion and contraction in the axial direction. Further, the belt material of the spiral portion 22 has a trapezoidal cross-sectional shape that is wider on the inner side surface 22b than on the outer side surface 22a.

According to such an embodiment, in use, the hose H is inserted in advance into the hose H, and the hose H is connected to the connection fitting N by pressing or the like, and then the female screw 11 of the mounting portion 1 is connected to the male screw of the connection fitting N. Mounting is completed by screwing.

When the cover 2 is mounted in this manner, the cover 2 is integrally attached to the mounting portion 1 screwed to the connection fitting N, so that the cover 2 is not easily detached from the connection fitting N.

Also, during use after mounting, the spiral portion 22 of the cover 2 is made of a band material having a large supporting area, and its end 22 'is closed in a ring shape to prevent expansion and contraction in the axial direction. Even when the cover 2 is bent and deformed, the inner shape of the cover 2 is not crushed and a true circle is maintained, so that the hose H is not flattened.

Further, since the cross-sectional shape of the band of the spiral portion 22 of the cover 2 is trapezoidal, the hose H is not bent when the cover 2 is bent.
Since the inner side surfaces 22b, which are sides, are in contact with each other, it is possible to prevent the hose H from being caught between the strips.

As described above, in addition to the illustrated embodiment, an embodiment in which the mounting portion 1 and the cover portion 2 are integrally formed of the same material is also possible.

Further, an embodiment in which the mounting portion 1 can be fixed to the connection fitting N by fixing means other than screwing is also possible.

[Effects of the Invention] As described above, the hose neck break prevention device according to the present invention is:
Since the cover is integrated with the mounting portion fixed to the connection fitting, there is an effect that the mounting strength of the cover is increased. In addition, this effect prevents the cover from being accidentally detached from the connection fitting during use, and does not cause the hose to break, so that the hose can be stably used for water flow.

Furthermore, since the cover part is made of a band material with a large supporting area and its spiral terminal is closed in a ring shape to prevent expansion and contraction in the axial direction, the inner shape is crushed by bending deformation of the cover part, and the hose Since the flattening does not occur, there is an effect that the neck of the hose can be effectively prevented from being broken.

In addition, since the cross-sectional shape of the band is trapezoidal and is formed in a spiral shape with its wide side facing inward, the wide side of the band comes into contact when the cover is bent, whereby the band is It is possible to prevent the hose from biting between the materials

[Brief description of the drawings]

FIG. 1 is a front sectional view showing an embodiment of a hose neck breaking prevention device according to the present invention, and FIG. 2 is a front view showing a use state of FIG. 1: Mounting part 2: Cover part H: Hose N: Connection fitting

Claims (1)

(57) [Scope of request for utility model registration] A cover which is fixed to a connection fitting to which the hose is connected, and a helical cover fitted to the outside of the hose integrated with the fitting and connected to the connection fitting; The portion is a band material having a trapezoidal cross section having a certain width, formed in a spiral shape with the wide side facing inward, and a hose neck breaking prevention device in which the spiral end is closed in an annular shape. .