Patent Application
20100154915
1. Field of the Invention
The present invention relates to a hose capable of combining with a sanitary apparatus.
2. Description of the Prior Art
As depicted in Taiwan patent, application No. 090204625, a conventional hose normally includes a metal spiral hose, a plastic hose, an outer positioning sleeve, an inner sleeve with threaded section corresponding to the spiral pattern of the metal spiral hose and a fastening head.
Practically, the inner sleeve has an outer diameter bigger than a bore diameter of the metal spiral hose, and the outer positioning sleeve is then sleeved around the metal spiral hose, such that the inner sleeve is tightly screwed in the metal spiral hose. In which, the inner sleeve should have adequate thickness to bear the positioning force without deformation. However, the bore diameter of the hose is inevitably sacrificed.
The main object of the present invention is to provide a hose which the metal spiral hose, the inner and outer sleeves are fastened up tightly.
Another main object of the present invention is to provide a hose that a bore diameter thereof is close to or equal to that of the metal spiral hose.
To achieve the above object, a hose of the present invention includes a nut cap, a plastic hose and a metal spiral hose with two openings on both ends thereof. On at least one end of the metal spiral hose is disposed an outer sleeve and an inner metal sleeve. In which, the outer sleeve sleeves around an outer periphery of the metal spiral hose, and one end thereof proximate to the opening is radially and outwardly extended a first rim. Moreover, the inner metal sleeve has an initial outer diameter smaller than a bore diameter of the metal spiral hose so as to be installed therein, and the inner metal sleeve is then enlarged in a stamping manner to form an enlarged section, such that the metal spiral hose is tightly gripped between the outer and inner metal sleeves. Furthermore, the plastic hose is disposed in the metal spiral hose, and on at least one end of the plastic hose is disposed a positioning sleeve, so that the plastic hose is positioned between the inner metal sleeve and the positioning sleeve.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiments in accordance with the present invention.
Please refer to
The hose further includes a plastic hose 40 disposed in the metal spiral hose 10. The plastic hose 40 has two openings on both ends thereof. On at least one end of the plastic hose 40 is disposed a positioning sleeve 50, so that the plastic hose 40 is positioned between the inner metal sleeve 30 and the positioning sleeve 50. In the present embodiment, the positioning sleeve 50 is made from metal material, and the positioning sleeve 50 is also enlarged in a stamping manner to form an enlarged section, such that the plastic hose 40 is tightly gripped between the inner metal sleeve 30 and the positioning sleeve 50. Moreover, an end of the positioning sleeve 50 proximate to the opening of the plastic hose is radially and outwardly extended a third rim 51 to prevent the end of the plastic hose from exposure.
The hose further includes a nut cap 60. One end of the nut cap 60 has an inner flange with an inner diameter smaller than an outer diameter of the first rim 21 yet bigger than an outer diameter of the metal spiral hose 10, such that the nut cap 60 sleeves the outer sleeve 20 and the inner flange is hookable with the first rim 21. Another end of the nut cap 60 has a threaded section to screw with a sanitary apparatus, i.e. a shower head. In addition, an outer periphery of the extended section 33 is disposed a gasket ring 70 to from a watertight section.
Based on the above-mentioned description, it is readily to be understood that the hose of the present invention is designed to realize the follow efficacy:
1. The initial outer diameter of the inner metal sleeve is not bigger than the bore diameter of the metal spiral hose, which allows the inner metal sleeve to be installed into the hose without much effort. The inner metal sleeve is then enlarged in a stamping manner while the metal spiral hose is also enlarged during the stamping process. Therefore, the bore diameter of the hose is not sacrificed, and the mechanical strength of the hose is maintained as well.
2. To bear the pressure during the process of positioning the parts of the hose, the thickness of the inner metal sleeve of a conventional hose is increased to get better mechanic strength; on the contrary, the parts of the present invention is positioned in a stamping manner, so that the bore diameter of the hose is enlarged, the metal spiral hose, the outer and the inner metal sleeves is fastened up tightly and the thickness of the inner metal sleeve is thinner (0.2 mm to 0.4 mm) which reduces the consumption of the material, lowering the manufacturing cost.
3. The positioning sleeve can be also enlarged to form an enlarged section. Therefore, the same effect as described hereinabove can be achieved as well.
While we have shown and described various embodiments in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
