JP4993538B2 - Tire injection method for puncture sealant and puncture sealant sealed container used therefor - Google Patents

Description

  The present invention relates to a tire filling method of a puncture sealant that enables efficient and reliable sealing by injecting an appropriate amount of a puncture sealant into a punctured tire, and a puncture sealant sealing container used therefor.

  In preparation for tire puncture, a vehicle with a puncture sealant sealed container filled with a puncture sealant in place of or together with an emergency tire that increases the weight of the vehicle and is dangerous to work on the road of an unfamiliar person An emergency repair method (see, for example, Patent Document 1) that facilitates the operation of allowing the vehicle to travel to the repair location by injecting the puncture sealant into the tire and filling the air pressure with It is used for repairing passenger car tires.

  When the amount of puncture sealant injected is small compared to the tire size, the coating film is thin and inferior to the puncture repair effect. Reduce the viscosity to make the tire balance poor.

  On the other hand, although such a puncture sealant is known to contain natural rubber latex (see Patent Document 1), the expiration date is about 4 years, but it is creamed in the meantime. The amount of liquid that can be filled is reduced. Proposals for preventing such creaming (for example, Patent Document 2) have also been made. However, in consideration of liquid leakage during filling, injection of liquid remaining in the can, etc. Because it was clear, it was difficult to set the filling amount according to the tire size, so the puncture sealant sealed container filled with an excessive amount of puncture sealant compared to the tire size, or insufficient It was easy to carry a puncture sealant sealed container.

Japanese Patent Laid-Open No. 9-118779 JP 2003-82328 A

  Therefore, as described above, coupled with the fact that the proper injection amount of the puncture sealant is not clear, only one or two kinds of puncture sealant sealed containers are used, and two kinds are used. In this case, there was a problem that the proper use according to the tire size was not clear.

  The tire injection method of the puncture sealant of the present invention solves the above-mentioned problems by setting the coating thickness based on the tire numerical value determined according to the tire size, and other present invention is set according to the tire size An object of the present invention is to provide a sealed container for a puncture sealant with a filled amount.

In order to achieve the above object, an invention according to claim 1 of the present invention is a tire filling method of a puncture sealant that seals a puncture portion of a punctured tire by injecting a puncture sealant containing natural rubber latex. When the tire outer diameter is OD (mm) and the tire cross-sectional width is W (mm), V / (π · (OD-30) · 0.9 · W) is 1.0 to 1.5 mm. The tire is injected into a tire by a puncture sealant sealed container filled with a puncture sealant having a filling amount V ( mm ³ ).

The invention according to claim 2 is a puncture sealant sealed container filled with a tire puncture sealant containing natural rubber latex, wherein the tire outer diameter is OD (mm), and the tire cross-sectional width is W (mm). It is characterized by being filled with a puncture sealant with a filling amount V ( mm ³ ) of ((1.0-1.5) · π · (OD-30) · 0.9 · W). The tire size corresponding to the tire outer diameter OD (mm) and the tire cross-sectional width W (mm) is preferably displayed on the surface of the puncture sealant sealed container. The invention according to claim 4 is a puncture sealant sealed container filled with a tire puncture sealant containing natural rubber latex, comprising a filling container filled with a puncture sealant, and an injection amount adjusting means, The injection amount adjusting means includes a puncture seal take-out pipe having a lower end inserted into the filling container and an upper end outside the filling container, and the take-out pipe includes a detachable adjustment piece, The lower end position of the take-out pipe in the filling container is changed by attachment and detachment and is fixed to the container, so that the puncture sealant corresponding to the tire size is supplied and the amount of the supplied puncture sealant (mm ³ ), When the tire outer diameter is OD (mm) and the tire cross-sectional width is W (mm), ((1.0 to 1.5) · π · (OD-30) · 0.9 · W) Specially To.

In the tire injection method of the puncture sealant of the present invention, the injection amount V ( mm ) where the value of V / (π · (OD-30) · 0.9 · W) determined by the tire size is 1.0 to 1.5 mm. ³ ) Since the puncture sealant sealed container having the above is injected into the tire, the active ingredient is reduced (cream) before the use of the puncture sealant containing the natural rubber latex. Appropriate amount can be injected in anticipation of unavoidable reduction in normal use conditions such as adhesion to the inner surface of the part, injection residue, leakage in injection work, etc. The time required can be shortened to the minimum necessary, and at the same time, the waste of puncture sealant is reduced.

Further, in the puncture sealant sealed container according to claim 2, an appropriate amount corresponding to the tire size can be injected by an injection operation using the same. When the size is displayed on the surface of the puncture sealant-sealed container, it is possible to eliminate misuse, facilitate management, and to inject an appropriate amount.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The tire injection method of the puncture sealant of the present invention is V / (π · (OD-30) · 0.9 · W, where the tire outer diameter is OD (mm) and the tire cross-sectional width is W (mm). ) Is injected by the puncture sealant sealed container 2 filled with a filling amount V ( mm ³ ) of 1.0 to 1.5 mm , that is, the puncture sealant sealed container 2 has ((1. A filling amount V ( mm ³ ) of 0 to 1.5) · π · (OD-30) · 0.9 · W) is filled.

  The puncture sealant sealed container (hereinafter sometimes simply referred to as a container) 2 is filled with the puncture sealant 3 in a filling container 4 as illustrated in FIG. 1, and the filling container 4 is a puncture seal. It has a container body 5 provided with a neck portion 5B having a thread portion on the outer periphery of the upper portion of the body portion 5A filled with the agent 3 and can penetrate the inner hole of the neck portion 5B. The cap 7 is screwed onto the screw portion while being closed by the closing plug 6.

Further, as the puncture sealant 3, for example, the natural rubber latex described in JP-A 2000-272022 is a mixture of natural rubber latex and a terpene resin as an adhesive and ethylene glycol as an antifreeze agent. As a stabilizer for stabilizing the above, a surfactant added with a fatty acid salt having 9 to 18 carbon atoms and / or an acrylic emulsion, a deproteinized natural rubber latex disclosed in JP-A No. 2002-294214 A puncture sealing agent containing a water-soluble polymer and having a viscosity of 80 to 150 cP at 25 ° C., disclosed in JP-A-2003-82328, is a natural puncture sealing agent for sealing the inner surface of a tire. the deproteinized rubber latex made by removing protein contained rubber latex raw rubber in the rubber particles, adhesive And an antifreeze agent and a surfactant, and the nitrogen content is 0.1 wt% or less and the ammonia content is 0.5 wt% or less with respect to the rubber solid content of the deproteinized rubber latex. A puncture sealing agent using at least one glycol selected from ethylene glycol, diethylene glycol and propylene glycol as the antifreezing agent, and the content of this glycol with respect to the total weight of the puncture sealing agent is 25% by weight. Lauric acid as a stabilizer in addition to natural rubber latex, such as terpene resin, phenol resin, polyvinyl ester, ethylene glycol and other anti-freezing agents. Surfactants such as ammonium and lauric acid triethanolamine It may use Dressings.

In addition, regarding the filling amount Vo ( mm ³ ) of the puncture sealant 3 into the filling container 4, the tire outer diameter OD (mm) and the tire cross-sectional width W (mm) are related to tires for passenger cars, according to JATMA or JIS D4202. The values are defined as the design outer diameter and the cross-sectional width, and are determined according to the tire size. With respect to the tire outer diameter OD (mm) and the tire cross-sectional width W (mm), the filling amount Vo ( mm ³ ) is set to ((1.0 to 1.5) · π · (OD-30) · 0. 9 · W).

  In this formula, (OD-30) is a value obtained by subtracting 30 mm from the tire outer diameter OD, that is, a value approximated to the inner diameter of the tire lumen, and 0.9 · W (mm) is a tire cross section. It corresponds to 0.9 times the width W, that is, the width in the tire axial direction of the tread region in the tire lumen. By using such a tread region as a reference region, the coating thickness of the puncture sealant 3 is verified. Because it was found to be suitable.

Further, a tire for a passenger car having a tire size of 215 / 45ZR17 is assembled on a rim having a rim size of 17 × 7.5JJ, and drilled by using nails having an outer diameter of 4 mm symmetrically in the locations shown in Table 1, and a puncture sealant. No. 3 was tested for repair after running a real vehicle (front right wheel) for 10 minutes at an internal pressure of 200 kPa and a speed of 60 km / h, as shown in Table 1. By filling 200 ml of puncture sealant, the puncture hole was sealed. It turned out to be possible. This value is a film thickness of 0.6 mm in the reference region. In Table 1, “grounding end” refers to the tire axial grounding end when the internal pressure is 130 kPa and the load is 5.3 kPa (corresponding to the maximum load capacity of JATMA), and “buttress position” refers to “grounding end” 10 mm away from the side wall side. In addition, although it tested also on the tire of tire size 165 / 65R14, it turned out that 0.6 mm is enough for the film thickness calculated | required by above-described numerical formula.

By the way, the injection amount is an actual injection amount injected while measuring the puncture sealant 3, and the container 2 according to the present invention has ((1.0 to 1.5) · π · (OD-30) The puncture sealant ³ having a filling amount V ( mm ³ ) of 0.9 · W is filled. This is because a) the expiration date of the container 2 is, for example, 4 years, and the injectable amount is reduced by creaming that occurs during storage,
b) Reduction of liquid volume due to mass reduction accompanying the creaming during storage,
c) Consideration of liquid leakage during use by inexperienced users, puncture sealant remaining in the can during injection, and adhesion to unnecessary places.

Regarding a) and b), the results of investigating the weight percentage of the amount of cream and the reduced mass of the liquid accompanying the storage months and the difference in storage state are shown in Table 2 and graphed for creaming in FIG. Show. The room temperature is 20 ° C., and the actual vehicle is stored in the trunk of a vehicle traveling around Hyogo Prefecture. By the way, I have run 80,778 km in 20 months and 103,969 km in 28 months. As shown in Fig. 5, the claiming rate is 30% at room temperature considering 4 years, and the creaming is reduced to about 7% by vibration in the actual vehicle state, so it turns out that 30% is enough did. In addition, the reduction | decrease in the liquid amount by weight reduction can be included in this value. For c), it was found to be around 20%.

As a result, in consideration of a) to c), it is preferable that 0.6 mm / (0.7 × 0.8) be 0.93 mm, that is, 1.0 mm or more. In addition, when the value obtained by the above formula is larger than 1.5 mm, particularly in the initial use of the container 2 and before the creaming progresses, the film thickness becomes large and is not economical. It is not a good idea to bring about a decrease in balance. Therefore, it is set in the range of 1.0 to 1.5 mm. Therefore, the filling amount V ( mm ³ ) is ((1.0 to 1.5) · π · (OD-30) · 0.9 · W), so that the optimum amount according to the tire size is filled. The amount can be determined.

  When the above mathematical formula is applied to the tire size, in the case of radial tires for passenger cars, the tires having “nominal cross-sectional width” of 135, 145, 155, 165 have a filling amount V of about 280 ml, and 175, 185, 195 have filling amounts V Is about 370 ml, 205, 215, 225 is about 460 ml, V is about 460 ml, 235, 245, 255, 265, 275 is about 4 sizes of container 2 with a capacity of about 600 ml. It can be adapted. In addition, by displaying the display unit 9 for displaying such an appropriate size using a label or the like on the surface of the can, it is possible to eliminate misuse and facilitate management, and to inject an appropriate amount.

By using the container 2 according to the tire size, when the tire outer diameter is OD (mm) and the tire cross-sectional width is W (mm), V / (π · (OD-30) · 0.9 · A filling amount V ( mm ³ ) with which W) is 1.0 to 1.5 mm can be injected into the tire. For injection, for example, as shown in FIGS. 2 and 3, tire puncture emergency repair that is installed in a car in preparation for puncture and includes a small compressor 11 and a seal / pump-up device 12 on which the container 2 can be mounted. Kit 10 is used.

  This tire puncture emergency repair kit 10 connects the small compressor 11 and the seal / pump-up device 12 by a hose 15a having a joint 13a, and connects the seal / pump-up device 12 and the nipple of the tire T to a joint 13b. It connects by the hose 15b which has.

  As shown in FIG. 3, the container 2 has the cap 7 removed, and the neck portion 5 </ b> B is screwed down and fixed to the base of the seal / pump-up device 12, so that the container 2 is connected to the small compressor 11. A pipe 18 breaks through the closing plug 6 and allows the puncture sealant 3 to flow out. The high-pressure air supplied to the seal / pump-up device 12 by starting the small compressor 11 is sent to the filling container 4, and the puncture sealant 3 is injected into the tire T from the take-out pipe 19 while opening the on-off valve 20. it can. Even after the supply of the puncture sealant 3 is completed, the operation of the small compressor 11 is continued to fill the predetermined internal pressure. Preferably, after traveling a little and spreading the sealing agent inside the tire 2, the internal pressure is checked again.

As a result, it fed to the puncture sealing agent 3 nearly tire T puncture sealant sealed container 2, the tire T, the tire outside diameter OD (mm), a section width of the tire and W (mm) At this time, the puncture sealant 3 with V / (π · (OD-30) · 0.9 · W) of 1.0 to 1.5 mm can be injected.

  In this way, sufficient and sufficient amount for tire puncture seal is filled, and the time required for puncture emergency repair can be shortened to the minimum necessary, and the performance after tire repair by reducing the injection of excessive puncture sealant Reduce the deterioration of

FIG. 4 illustrates a puncture sealant sealed container 2 having an injection amount adjusting means 22, and in this case, the neck portion 5 </ b> B is used on the upper side, and the injection amount adjusting means 22 includes the extraction pipe. 19 is intended to change the height of the lower end of, for example, the removable adjuster piece 23a to the take-out pipe 19, consists 23b · ·, fixed to the and container changing the position of the lower end of the extraction pipe 19 by the removable Therefore, it is possible to supply the puncture sealant 3 according to the tire size, which helps to reduce the type of the container 2, and when the tire outer diameter is OD (mm) and the tire cross-sectional width is W (mm). , V / (π · (OD-30) · 0.9 · W) is 1.0 to 1.5 mm, and is included in the puncture sealant sealed container 2 filled with a filling amount V ( mm ³ ).

  For tires of tire size 215 / 45ZR17, for (π · (OD-30) · 0.9 · W), a container in which the filling amount V of the puncture sealant is the following value is manufactured. Table 3 shows the result of injecting into the tire after creaming corresponding to 4 years and 6 years. The sealing effect refers to the presence or absence of air leakage, the running feeling refers to the presence or absence of a sense of discomfort such as vibration after running for 3 days, and ◯ indicates that it is good.

  As shown in Table 3, in each case of the examples, the repairability was ensured, and the tires did not feel uncomfortable during running.

It is a perspective sectional view which illustrates one embodiment of a puncture sealant sealed container. It is a perspective view which illustrates a tire puncture emergency repair kit. It is sectional drawing which illustrates the use condition of the puncture sealant sealing container 1 in a tire puncture emergency repair kit. It is a perspective view which illustrates other embodiment of a puncture sealant sealing container. It is a diagram which illustrates creaming of a puncture sealant.

Explanation of symbols

2 Puncture sealant sealed container 3 Punk sealant 4 Filling container 9 Display

Claims (4)

A tire injection method for a puncture sealant that seals a puncture portion of a punctured tire by injecting a puncture sealant containing natural rubber latex,
When the tire outer diameter is OD (mm) and the tire cross-sectional width is W (mm), V / (π · (OD-30) · 0.9 · W) is 1.0 to 1.5 mm. A tire injection method for a puncture sealant, characterized in that the tire is injected into a tire by a puncture sealant sealed container filled with a puncture sealant having a filling amount V ( mm ³ ). A puncture sealant sealed container filled with a tire puncture sealant containing natural rubber latex,
When the tire outer diameter is OD (mm) and the tire cross-sectional width is W (mm), the filling amount of ((1.0 to 1.5) · π · (OD-30) · 0.9 · W) A puncture sealant sealed container filled with a puncture sealant of V ( mm ³ ). The puncture sealant sealing according to claim 2, wherein a tire size corresponding to a tire outer diameter OD (mm) and a tire cross-sectional width W (mm) is displayed on a surface of the puncture sealant sealing container. container. A puncture sealant sealed container filled with a tire puncture sealant containing natural rubber latex,
A filling container filled with a puncture sealant and an injection amount adjusting means,
The injection amount adjusting means includes a puncture sealant extraction pipe having a lower end inserted into the filling container and an upper end outside the filling container,
The extraction pipe comprises a removable adjusting pieces by Rukoto lower end position in the filling container of the extraction pipe by attachment and detachment of the adjusting pieces are fixed to the change vital vessel, sealing preparation in accordance with the tire size with supplying the,
The amount (mm ³ ) of the supplied puncture sealant is ((1.0 to 1.5) · π · when the tire outer diameter is OD (mm) and the tire cross-sectional width is W (mm). (OD-30) · 0.9 · W), a puncture sealant-sealed container.

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