JPH0333456Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention particularly relates to a puncture repair tool for tubeless tires.

[Conventional technology]

A filling plug and a repair tool for repairing a punctured part of a tubeless tire from outside the tire are previously disclosed by the present applicant in Japanese Utility Model Application Publication No. 175704/1983.

The filling plug is as shown in FIG.
Umbrella parts 2 and 3 having edges larger than the outer diameter of the rod-like main body 1 are formed at the upper and lower ends of the rod-like main body 1, and an aggregate 4 is formed in a state where the umbrella parts 2 and 3 are connected to the center of the rod-like main body 1. is embedded, and at least the surface layer 5 of the rod-shaped main body 1 is made of unvulcanized rubber, and the other parts except for the aggregate 1 are made of vulcanized rubber.

In order to repair a puncture using this filling plug, a first tool having a conical part to be inserted into the puncture hole in order to repair the puncture hole, and a tool that is screwed onto the first tool and used to repair the puncture hole are used. requires a second tool with a push rod to insert the filling plug into the sheath left behind. Therefore, when replacing tools, there is a problem in that if one tool is placed on the floor or the like, it is difficult to find it.

As an integrated version of this, the present applicant has also proposed a driver body with a cone on one side and a push rod on the other, as previously described in Japanese Utility Model Publication No. 51-3522. However, when the push rod is used to remove the tire from the tire, the conical part faces toward the operator's body, which is very dangerous.

[Problem that the invention attempts to solve]

The present invention aims to solve the problems of conventional tools, such as having to prepare multiple types of tools or being dangerous.

[Means for solving problems]

The present invention has a rod-shaped tool rod with a conical tip and a rotation locking portion formed near the base end, and the tool rod can be attached and detached in either forward or reverse direction, and the rotation locking portion is formed in the vicinity of the base end. A holder has an engaging part that engages with a stop part to stop the rotation of the tool bar and prevents the tool bar from being inserted beyond a certain length, and a holder that fits loosely around the outer circumference of the tool bar attached to the holder and allows the tool bar to be inserted. A tire puncture repair tool comprising: a sheath portion fixed to the holder, the inner diameter of the sheath portion being approximately equal to the diameter of a filling plug attached thereto.

〔Example〕

Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

FIG. 1 is an exploded perspective view of a repair tool according to the present invention. In the figure, 11 is a tool rod, the tip of which is a conical part 11a.
The base end is a push rod 11b. A locking portion 11c is formed near the base end to prevent rotation and to prevent slippage in the longitudinal direction.
Further, a spiral strip is formed on the circumferential surface of the tip portion to facilitate screwing into the puncture hole. 12
is a holder, and the locking portion 11 is provided on the inner surface of the tip.
An engaging portion 12a that engages with the screw portion c is provided, and a male threaded portion 12b is formed on the outer periphery of the tip. Note that the inside of the holder 12 is hollow, and a filling plug or the like can be stored therein. 12c
is its cap. 13 in the figure is a sheath part,
As shown in FIG. 2, the male threaded portion 1 of the holder 12
A female threaded portion 13a is formed to be screwed into 2b, the tip is cut diagonally, and a spiral strip is formed on the outer periphery.

FIG. 2 is a sectional view showing a state in which these are combined.

Hereinafter, a method for repairing a puncture hole using the tool of the present invention will be explained.

First, the puncture hole 21 of the tire 20 shown in FIG.
Insert the tip of the tool assembled in the state shown in Fig. 2 into (Fig. 4). At this time, it may be necessary to penetrate layers such as the steel cord of a tire. If the cut of the sheath 12 is perpendicular to the axis, the steel cord will get caught in the cut of the sheath even when the tool is rotated, making it difficult to penetrate the steel cord layer. By cutting the sheath portion 12 into a tapered shape, when inserting the tool while turning it, the tool can be inserted through the steel cord layer with little resistance.

After completely inserting the tip of the tool in this way, as shown in FIG.
2, and insert only the sheath 12 into the puncture hole 21.
Remove the holder 12 and the tool bar 11, leaving them in place.

Next, replace the tool rod 11 and attach it to the holder 12 so that the push rod 11b side becomes the tip, and insert the filling plug A with the vulcanization accelerator adhered to the surface into the sheath remaining in the puncture hole. , push rod 1
1b, push in the same filling plug 1. At this time,
Since the filling plug A is guided inside the sheath part 13,
The vulcanization accelerator is never wiped away. Push rod 11b
The protruding length of the plug A from the holder 12 is such that when the plug A is pushed all the way into the sheath 13, the tip umbrella portion 2 of the plug A slightly protrudes from the cut portion at the tip of the sheath 13.

After that, by turning the holder 12 and screwing it into the sheath 13 (Fig. 7), and pulling out the sheath 13 and the holder 12 together, only the plug A will remain in the puncture hole 21 of the tire 20. (Figures 8 and 9
figure).

Although the drawing shows a state in which the umbrella portion 2 at the tip of the plug A protrudes into the inside of the tire, the umbrella portion 2 may remain within the puncture hole 21 depending on the thickness of the tire. In this case, the umbrella part 2 serves as a stopper to prevent the plug A from being pulled out together with the sheath part 13 inside the puncture hole, and the plug is reliably filled into the puncture hole.

The unvulcanized portion of the plug A is accelerated to be vulcanized by the frictional heat of the tire during running, and becomes integrated with the rubber of the tire during the process from adhesion to hardening.

[Effect of idea]

As described above, the present invention provides the following effects.

The entire puncture repair process can be completed by simply replacing three types of tools in sequence, and each tool is used until the process is completed, so there is no need to temporarily leave it on the floor or other places and forget it. Can work safely.

By cutting the tip of the sheath diagonally,
It can penetrate the steel cord layer of a tire with little resistance.

By making the inside of the holder hollow, all the equipment and parts such as the filling plug can be stored, and the volume of the molding material can be reduced.

By configuring the holder and tool separately, there is no need for conventional insert molding of resin and metal, allowing for mass production, simplifying the manufacturing process, and reducing costs. .

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing an embodiment of the present invention, Fig. 2 is an assembled sectional view thereof, Figs. 3 to 8 are process diagrams showing a puncture repair method using the tool of the present invention, and Fig. 9 8 is an enlarged view of the main part of FIG. 8, and FIG. 10 is an enlarged sectional view of the filling plug. A: Filling plug, 1: Rod-shaped main body, 2, 3: Umbrella portion, 4: Aggregate, 5: Surface layer, 11: Tool rod, 11
a: conical part, 11b: push rod, 11c: locking part, 1
2: holder, 12a: engaging portion, 12b: male threaded portion, 12c: cap, 13: sheath portion, 13a: female threaded portion, 20: tire, 21: puncture hole.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A rod-shaped tool rod with a conical tip and a rotation stopper formed near the base end, and the tool rod can be attached and detached in either forward or reverse directions. , a holder having an engaging part that engages with the detent locking part to stop the rotation of the tool bar and prevents the tool bar from being inserted beyond a certain length; and a sheath portion for fixing the tool rod to the holder, the inner diameter of the sheath portion being approximately equal to the diameter of a filling plug attached thereto. 2. The tire puncture repair tool according to claim 1, wherein the tip of the sheath is cut diagonally. 3. The tire puncture repair tool according to claim 1 or 2 of the utility model registration claim, wherein the holder is hollow inside.