JP2001228043A - Detection implement for air leakage of inner tube for bicycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a detecting implement, which can detect air leakages from a place, in which an air aupply device to an inner tube for a bicycle is submerged simply. SOLUTION: A hollow seat disk 4 is locked and attached to the opening end of a transparent bottomed hollow container body 2. A fitting ring 8, which is composed of an elastic material is internally fitted and bonded to the step part 7 of a hollow part 3 in the seat disk 4. A lid 9 is externally fitted, in a watertight manner, to the seta disk 4 in its flange part 6. The fitting ring 8, in which a groove part 10 due to a diameter difference is arranged and installed is one provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention belongs to the field of detection,
The present invention mainly relates to a detector for detecting air leakage from a bicycle tube.

[0002]

2. Description of the Related Art Conventionally, in puncture repair of a bicycle tube, a tube is taken out and turned into water to search for a location of an air leak. In such a case, if it is possible to detect an air leak at that point, the trouble of removing the tube from the tire can be eliminated. For this reason, a flange was attached to the air inlet of the base to detect air leakage due to settling of the base rubber, but air from the gap between the tapered part of the base rubber and the tapered surface of the inner surface of the hollow screw shaft was detected. Leaks could not be detected by the method.

[0003]

SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a detector which can easily submerge an entire air supply device to a bicycle tube and detect air leakage from that location. Is what you do.

[0004]

Means for Solving the Problems A first method for solving the above problems is described below.
The bicycle tube air leak detecting device according to the invention is a container formed by fitting a lid to an opening of a transparent cylindrical container body having a bottom and an open end. An expandable and contractable fitting ring fitted to the base of the provided hollow screw shaft is internally fitted. Further, a bicycle tube air leak detecting device according to a second invention is the bicycle tube air leakage detecting device according to the first invention, wherein the fitting ring is provided with a depressed portion on the inner periphery.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Since the container body is used by putting water in it, considering the case of carrying, it is desirable that the lid that fits over the opening be fitted in a watertight manner. ,
The fitting ring is made of an elastic material, and a set portion provided on an inner periphery thereof may be a groove having a difference in diameter, or a protrusion provided with a downwardly inclined surface at a protrusion between the grooves.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to an embodiment. As shown in FIG. 1, a transparent container body 2 made of synthetic resin having one end opened and a bottom cover 1 bonded to the other end in a watertight manner. The boss portion 5 of the seat plate 4 having the hollow portion 3 at the end is fitted inside,
The flange 6 is seated on the upper end and adhered, and the hollow 3
A fitting ring 8 as shown in FIG. 3 is internally fitted and adhered to the upper large-diameter stepped portion 7, and a lid 9 is water-tightly attached to the seat base 4 via an outer periphery of the flange portion 6. Externally. As the fitting ring 8, as shown in FIG.
A groove 10 is provided according to a difference in diameter so that the protrusion 11 can be easily depressed by resistance at the time of fitting, or as shown in FIG. 5, a slope is formed on the protrusion 11 from the upper surface to the lower surface. Also provided are those formed so as to be easily fitted.

As shown in FIG. 2, the bicycle tube air leak detecting device a thus constructed has the lid 9 removed, water 7 to 8 minutes is poured into the container body 2 and fitted in that state. When the air supply device 14 for the tube fixed to the rim 13 of the bicycle is inserted into the inner peripheral surface of the attachment ring 8 and pressed further upward from the state shown in FIG. 2, the base nut 15 is elastically deformed. By this, it fits inside the fitting ring 8,
It does not fall off even if you release your hand. Whether or not the bubbles 16 are generated in the water in such a state is obvious because the container body 2 is transparent.
The location of the occurrence is from the base 17 or the base 1
This is extremely convenient because it can be determined from the portion of the cap 18 that holds the 7. Therefore, it is easy to determine whether it is air leakage from the tube due to a nail or the like or air leakage from the air supply device 14 when the tire is not normal during cycling, as well as during normal running, and In the case of an air leak from the air supply device 14, it is possible to determine from which location the air leaks, so that appropriate and quick leak countermeasures can be taken. The lid 9 has an O-ring (not shown) on its inner periphery.
Can also be provided as an internal device.

[0008]

As described above, according to the present invention, since it is small and compact and can be carried in a watertight manner, there is no need for a special water tank, so that it is possible to carry out the cycling or the like, not to mention during daily running. There is an effect that the determination of air deficiency can be made promptly and appropriately.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an air leak detector a of a bicycle tube according to the present invention.

FIG. 2 shows a tube tube air leak detector a of the present invention.
FIG.

FIG. 3 is a perspective view of a fitting ring 8;

FIG. 4 is a perspective view of a fitting ring 8 according to another embodiment.

FIG. 5 is a longitudinal sectional view of a fitting ring 8 according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bottom lid 2 Container main body 3 Hollow part 4 Seat plate 5 Boss part 6 Flange part 7 Step part 8 Fitting ring 9 Lid 10 Groove part 11 Protrusion part 12 Water 13 Rim 14 Air supply device 15 Nut 16 Bubbles 17 Base 18 Cap a Bicycle Tube air leak detector

Claims (2)

[Claims] 1. A container in which a lid is externally fitted to an opening of a transparent cylindrical container body with one end opened and having a bottom, and a base of a hollow screw shaft erected on a bicycle tube in the opening. An air leak detecting device for a bicycle tube, in which a scalable fitting ring is fitted. 2. The bicycle tube air leak detecting device according to claim 1, wherein the fitting ring is provided with a depressed portion on the inner periphery.