JP2008162060A - Sealing pumping-up apparatus for tire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sealing pumping-up apparatus for a tire which reduces the labor burden of an operator operating a muscle-driven pump and can well repair a punctured tire. <P>SOLUTION: When the volume of the cylinder of the muscle-driven pump 70 is V1, and the volume of gas in a liquid agent accommodation part 14 is V2, V2/V1 is 0.2-1. When the gas exists in the liquid agent accommodation part 14, the gas functions as a pressure accumulation tank. Since discharge pressure is equalized to reduce pulsation, the labor burden of the operator operating the muscle-driven pump can be reduced, and shearing force in a tire valve part which is exerted to a sealant can be reduced. Since the value of V2/V1 is 0.2-1, the gelation of the sealant can be prevented, and air can be supplied smoothly to the punctured tire 50, so that the punctured tire can well be repaired. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a tire sealing / pump-up device.

Conventionally, when a pneumatic tire is punctured, the puncture tire is repaired with a sealing agent without replacing the puncture tire and the wheel, and the inner pressure of the puncture tire is increased (pumped up) to a predetermined reference pressure. -Pump-up devices are known.
As an electric air pump for a battery used in this sealing / pump-up device or the like, an electric air pump for a battery disclosed in Patent Document 1 is known.

  An electric air pump for a battery disclosed in Patent Document 1 includes a connection plug to a power socket, an electric motor that is rotationally driven by power supply from the connection plug, and a pressurizing device that moves the piston up and down by the rotational drive of the electric motor. And between the joint pipe and the air supply hose so that the compressed air by the pressurizing device is supplied to the adapter through the joint pipe and the air supply hose. A pressure-resistant tank having an expanding internal volume is provided so as to communicate with each other.

  According to the battery-powered air pump of Patent Document 1, compressed air generated in the pressurizing device by driving the electric motor is introduced from the joint pipe into the pressure-resistant tank. Since the pressure tank has an enlarged internal volume with respect to the joint pipe and the air supply hose, the air pressure of the compressed air introduced into the pressure tank is temporarily reduced when the electric motor is started up. For this reason, a buffering action that reduces the load applied to the pressure device and the electric motor is exhibited.

  The air pressure in the pressure tank is gradually increased by the compressed air that is sequentially introduced. In this case as well, the same buffering action is exhibited, and the pressure is increased to a pressure that exceeds the air pressure of the compressed air in the pressurizing device. When the air pressure in the pressure tank becomes higher than the air pressure on the tire side via the adapter and the air supply hose, the compressed air is replenished by being pressed into the tire from the pressure tank. At this time, since the air supply can be performed efficiently by the increased air pressure, the amount of power consumption can be reduced.

JP 2002-48069 A

Incidentally, as an air pump used in a tire sealing / pump-up device, there is a human-powered pump that supplies compressed air to the outside by operating a piston in a cylinder by human power.
However, since there are many pulsations in the manual pump, when the sealing agent is injected into the puncture tire, the pressure applied to the sealing agent passing through the tire valve of the puncture tire increases, and the sealing agent gels and the tire valve It is easy to clog up. Moreover, the labor burden of the operator who operates a human-powered pump is large.

  In consideration of the above-described facts, an object of the present invention is to provide a tire sealing / pump-up device capable of reducing the labor burden of an operator who operates a human-powered pump and repairing a good puncture tire.

  The tire sealing / pump-up device according to claim 1 of the present invention includes a human-powered pump in which a piston in a cylinder is operated by human power to supply compressed air to the outside, a sealing agent and a gas inside, and A liquid agent discharge part for discharging the sealing agent and an air inlet part for supplying air into the inside, a liquid agent container having one end connected to the air inlet, and the other end connected to the human power pump. A first connecting pipe that communicates the housing portion with the human-powered pump; one end portion is connected to the liquid agent discharge port; and the other end portion is connected to a tire valve of a puncture tire to connect the liquid agent accommodation portion and the puncture tire. A second connecting pipe that communicates, and when the cylinder volume of the human-powered pump is V1, and the gas capacity of the liquid agent storage part is V2, V2 / V1 is in the range of 0.2 to 1. And wherein the Rukoto.

According to this configuration, one end of the first connection pipe is connected to the air inlet of the liquid agent storage part that stores the sealing agent and gas therein, and the other end of the first connection pipe is connected to the human-powered pump. The liquid container and the human-powered pump communicate with each other.
One end of the second connection pipe is connected to the liquid agent discharge port of the liquid agent storage section, and the other end of the second connection pipe is connected to the tire valve of the puncture tire so that the liquid agent storage section and the puncture tire communicate with each other. To do.
By operating the human power pump, air is sent from the human power pump to the liquid container, the sealing agent and air are supplied to the puncture tire, and the puncture tire is repaired.

Here, in the configuration of claim 1, when the cylinder volume of the human-powered pump is V1, and the gas capacity of the liquid agent storage portion is V2, V2 / V1 is in the range of 0.2-1.
Thus, since there exists gas in a liquid agent accommodating part, since this gas functions as a pressure accumulation tank and can reduce a pulsation, the labor burden of the operator who operates a human-powered pump can be reduced.

On the other hand, if the value of V1 / V2 is less than 0.2, the discharge pressure of the human-powered pump increases and gelling of the sealing agent tends to appear. When the value of V2 / V1 exceeds 1, the discharge pressure of the human-powered pump decreases and it becomes difficult to supply air to the puncture tire.
For this reason, when the value of V2 / V1 is in the range of 0.2 to 1, it is possible to prevent the sealing agent from gelling, and it is difficult to supply air to the punctured tire. Tire repair is possible.

  Since this invention was set as the said structure, the labor burden of the operator who operates a human-powered pump can be reduced, and a favorable puncture tire repair can be performed.

  Below, an example of an embodiment concerning the present invention is described based on a drawing.

(Configuration of tire sealing / pump-up device)
First, the structure of the tire sealing / pump-up device according to this embodiment will be described. FIG. 1 shows a tire sealing / pump-up device (hereinafter simply referred to as “pump-up device”) 10 according to the present embodiment.

  The pump-up device 10 according to the present embodiment repairs a punctured tire with a sealing agent without replacing the punctured tire and the wheel when a pneumatic tire mounted on a vehicle such as an automobile is punctured. Is increased (pumped up) to a predetermined reference pressure.

  As shown in FIG. 1, the pump-up device 10 includes a human-powered pump 70 that supplies compressed air to the outside by operating a piston 74 in a cylinder 72 by human power. The human-powered pump 70 according to the present embodiment is a manual air pump, and air can be pumped by manually moving the piston 74 in the cylinder 72 up and down manually. Note that the human-powered pump 70 by human power may be, for example, a stepping type air pump.

Further, as shown in FIG. 1, the pump-up device 10 contains a sealing agent inside, a liquid agent containing portion having a liquid agent outlet 56 for discharging the sealing agent and an air inlet 58 for flowing air into the inside. 14 is provided.
The liquid agent storage unit 14 includes a liquid agent container 16 that stores a sealing agent therein, and an injection unit 18 provided at an opening of the liquid agent container 16.

  As shown in FIG. 2, a barrel portion 20 having a substantially constant cross-sectional area along the radial direction and a circular, oval or elliptical cross section is formed on the upper part of the liquid container 16. . A substantially cylindrical neck portion 24 that protrudes downward is integrally formed at the lower portion of the liquid agent container 16 via a shoulder portion 22 whose cross-sectional area gradually decreases from the lower end side of the body portion 20.

  The liquid container 16 is molded from various resin materials having gas barrier properties and metal materials such as aluminum alloys. The liquid agent container 16 is filled with a slightly larger amount of the sealing agent 26 than a prescribed amount (for example, 300 g to 700 g) according to the type and size of the tire to be repaired by the pump-up device 10.

  An air layer G is formed on the upper side of the sealing agent 26 in the liquid agent container 16 in a state where a larger amount of the sealing agent 26 than the prescribed amount is accommodated. The gas stored in the liquid agent container 16 is not limited to air, and an inert gas such as Ar is enclosed in the liquid agent container 16 together with the sealing agent 26 at the time of shipment in order to prevent deterioration due to oxidation or the like of the sealing agent 26. You may do it.

As shown in FIG. 2, the injection unit 18 includes a unit main body 28 formed in a substantially cylindrical shape and a plate-like leg portion 30 extending from the lower end portion of the unit main body 28 to the outer peripheral side. The neck 24 of the liquid agent container 16 is fixed to the upper end of the unit main body 28 by welding.
Further, the injection unit 18 is provided with an L-shaped pressure pipe 40 having one end inserted into the liquid container 16 and the other end extending from the injection unit 18.

On the other hand, as shown in FIG. 1, a pressure hose 42 as an example of a first connection pipe is connected to the human power pump 70. A joint coupler 43 is attached to the other end of the pressure hose 42.
An air inlet 58 for allowing air to flow into the liquid agent accommodating portion 14 is formed at the tip of the pressure pipe 40, and a connection member 46 to which the joint coupler 43 can be connected is provided at the air inlet 58. . The pressure pipe 40 protrudes into the liquid agent container 16 through the pressurized liquid supply chamber 32 through the peripheral wall portion of the unit main body 28 at the tip opposite to the connection member 46.

One end of the pressure hose 42 is connected to the pressure pipe 40 by the joint coupler 43 and the connecting member 46, the other end of the pressure hose 42 is connected to the human power pump 70, and the liquid agent storage unit 14 and the human power pump 70 are connected. It comes to communicate.
In addition, although the flow of the compressed air from the outside to the inside of the pressurized liquid supply chamber 32 is allowed at the tip of the pressure pipe 40, the compressed air and the backflow of the sealing agent 26 from the inside of the pressurized liquid supply chamber 32 to the outside are allowed. The structure which arrange | positions the non-return valve to prevent may be sufficient.

In the pump-up device 10, as shown in FIG. 2, when the liquid agent container 16 is set upright above the injection unit 18, the sealing agent 26 in the liquid agent container 16 is formed inside the injection unit 18 by its own weight. Into the pressurized liquid supply chamber 32.
In the pressurized liquid supply chamber 32, a liquid agent discharge port 56 for discharging the sealing agent 26 to the outside is formed, and the liquid agent discharge port 56 is provided as an example of a second connection pipe via a nipple 34. One end of the joint hose 36 is connected. As a result, the joint hose 36 communicates with the pressurized liquid supply chamber 32 via the nipple 34.

  As shown in FIG. 1, a valve adapter 38 that is detachably connected to the tire valve 52 of the puncture tire 50 is provided at the other end of the joint hose 36. By connecting the valve adapter 38 to the tire valve 52, the pressurized liquid supply chamber 32 of the liquid agent storage unit 14 and the puncture tire 50 communicate with each other via the joint hose 36.

Here, in the pump-up device 10, when the cylinder volume of the human-powered pump 70 is V1, and the capacity of the air layer G of the liquid agent storage unit 14 is V2, V2 / V1 is in the range of 0.2-1.
FIG. 3 shows the relationship between the value of V2 / V1 and the maximum value of the discharge pressure of the human power pump. This is calculated under the conditions that the inner diameter of the cylinder is 40 mm, the moving distance of the piston is 100 mm, and the speed of moving the piston is 1 to 2 times per second.
As shown in FIG. 3, the maximum value of the discharge pressure of the human power pump 70 varies depending on the ratio of the capacity of the air layer G of the liquid agent storage unit 14 and the cylinder volume of the human power pump 70, that is, the value of V2 / V1.

When the discharge pressure of the human-powered pump 70 is 75 kPa, gelation of the sealing agent 26 supplied from the liquid agent storage unit 14 to the puncture tire 50 appears.
When the value of V2 / V1 is 0.2 or more, the discharge pressure of the human-powered pump is suppressed to less than 75 kPa, and gelling of the sealing agent can be prevented.
On the other hand, when the value of V2 / V1 exceeds 1, the discharge pressure of the human-powered pump decreases, and it becomes difficult to supply air to the puncture tire 50.

(Operation of Tire Sealing and Pump-Up Device According to this Embodiment)
Next, an operation procedure for repairing the puncture tire 50 using the pump-up device 10 according to the present embodiment will be described.
When puncture occurs in the pneumatic tire, the operator first screws the valve adapter 38 of the joint hose 36 to the tire valve 52 of the puncture tire 50 and connects the joint hose 36 to the puncture tire 50.

Thereby, the puncture tire 50 communicates with the liquid agent container 16 of the liquid agent storage unit 14 via the joint hose 36.
When the operator operates the human-powered pump 70, that is, when the piston 74 in the cylinder 72 is manually moved up and down, air is sent from the human-powered pump 70 to the liquid agent storage unit 14.

  When the compressed air is sent from the human power pump 70 to the liquid agent container 14, the sealing agent 26 accommodated in the liquid agent container 14 is pushed out from the liquid agent discharge port 56 of the liquid agent container 14 by the pressure of the compressed air, This sealing agent 26 is injected into the puncture tire 50 through the joint hose 36. Further, compressed air is supplied from the human-powered pump 70 to the puncture tire 50, the pressure of the puncture tire 50 is increased, and the puncture tire 50 is repaired.

Here, in the configuration of the present embodiment, when the cylinder volume of the human-powered pump 70 is V1, and the gas volume of the liquid agent storage unit 14 (that is, the volume of the liquid agent container−the volume of the sealing agent) is V2, V2 / V1 is It is in the range of 0.2-1.
When there is no gas in the liquid container 14, that is, when there is no pressure accumulating tank function, as shown in FIG. The maximum value of the discharge pressure increases (see solid line b).

When the gas is present in the liquid agent storage unit 14 as in the present embodiment, this gas functions as a pressure accumulation tank, and as shown in FIG. 4, compared to the case where there is no gas in the liquid agent storage unit 14, The maximum value (see A) of the discharge pressure of the human pump 70 is kept low, and the minimum value of the discharge pressure is also kept high (see dotted line a).
As described above, in the pump-up device 10 according to the present embodiment, the discharge pressure can be averaged and pulsation can be reduced, so that the labor burden on the operator who operates the human-powered pump can be reduced, and the tire valve portion related to the sealant The shearing force at can be reduced.

Further, in the pump-up device 10, when the cylinder volume of the human-powered pump 70 is V1, and the capacity of the air layer G of the liquid agent storage unit 14 is V2, V2 / V1 is in the range of 0.2 to 1, so the sealing agent Can be prevented, and it is difficult to supply air to the puncture tire 50, so that the puncture tire can be repaired satisfactorily.
Moreover, even if a pump without a sub tank (auxiliary tank) is used as the human power pump, the sealing agent can be easily injected into the tire.
Moreover, you may make it prevent deterioration of the liquid agent before the pump up apparatus 10 is used by filling the space of the capacity | capacitance V2 of this application with the inert gas.
The present invention is not limited to the above-described embodiment, and various modifications, changes, and improvements can be made.

FIG. 1 is a schematic view showing a configuration of a tire sealing / pump-up device according to an embodiment of the present invention. FIG. 2 is a schematic diagram showing the configuration of the liquid medicine container according to the present embodiment. FIG. 3 shows the relationship between the value of V2 / V1 and the maximum value of the discharge pressure of the human-powered pump when the cylinder volume of the human-powered pump according to the present embodiment is V1 and the capacity of the air layer of the liquid agent storage unit is V2. It is a graph to show. FIG. 4 is a graph showing the relationship between the discharge pressure of the human-powered pump according to the present embodiment and the presence or absence of a pressure accumulating tank.

Explanation of symbols

10 Pump Up Device 14 Liquid Agent Storage Unit 26 Sealing Agent 36 Joint Hose (Second Connection Pipe)
42 Pressure hose (first connecting pipe)
50 Puncture tire 52 Tire valve 56 Liquid agent discharge port 58 Air inlet 70 Human power pump 72 Cylinder 74 Piston

Claims (1)

A human-powered pump in which the piston in the cylinder is manually operated to supply compressed air to the outside;
A liquid agent container having a sealing agent and a gas therein, a liquid agent outlet for discharging the sealing agent, and an air inlet for allowing air to flow into the interior; and
A first connection pipe having one end connected to the air inlet and the other end connected to the human-powered pump to communicate the liquid agent-containing part and the human-powered pump;
A second connection pipe having one end connected to the liquid agent discharge port and the other end connected to a tire valve of a puncture tire to connect the liquid agent storage portion and the puncture tire;
With
A tire sealing / pump-up device, wherein V2 / V1 is in a range of 0.2 to 1, where V1 is a cylinder volume of the human-powered pump and V2 is a gas volume of the liquid agent storage portion.

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