JP2007168418A - Sealing pumping up apparatus of tire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make it unnecessary to fracture a seal material which sealed an output port when it inhibits that air mixes in a sealing agent applied into a pneumatic tire, and the feeding speed of the sealing agent falls off and the sealing agent is made breathe out from the output port of a liquid medicine receptacle. <P>SOLUTION: With the pumping up apparatus 10, if a plunger member 50 moves to a gas liquid feeding position from an air feeding position, a bottom closure 54 blockades the cylinder hole 48 of an impregnation unit 18, and an output port 25 of a liquid medicine receptacle 16 is disengaged. Thereby, a compressor unit communicates in the liquid medicine receptacle 16 through a pressure-tight hose 84, a first air supply passage 80 and a second air supply passage 74, a sealing agent 28 in the liquid medicine receptacle 16 flows in the pressurization liquid supply chamber 42 of the impregnation unit 18 through the output port 25, and the sealing agent 28 in the pressurization liquid supply chamber 42 is supplied under pressure into the tire through a gas liquid feeding way 82 by the pressure of compressed air supplied into a liquid container 16 from a compressor unit 12, and the sealing agent 28 in the pressurization liquid supply chamber 42 is supplied under pressure into the tire through the gas liquid feeding way 82. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  In the present invention, after injecting a sealing agent for sealing a punctured pneumatic tire into the pneumatic tire, compressed air is supplied into the pneumatic tire to increase the internal pressure of the pneumatic tire, or the pneumatic tire The present invention relates to a sealing / pump-up device for increasing the internal pressure of a pneumatic tire by supplying compressed air as needed.

  In recent years, when a pneumatic tire (hereinafter simply referred to as “tire”) is punctured, the tire is repaired with a sealing agent and the internal pressure is pumped up to a predetermined reference pressure without replacing the tire and the wheel. Puncture repair devices (hereinafter simply referred to as “puncture repair devices”) have become widespread. An example of this type of puncture repair device is described in Patent Document 1.

  The puncture repair device disclosed in Patent Document 1 includes a storage container in which a puncture sealing agent is stored and a storage portion sealed by a lid portion through which a puncture sealing agent can be broken is stored in a replaceable manner, and a cylindrical body And a unit main body provided with a switching tool movably disposed in the body portion. An inflow port that leads to a high-pressure air source and a discharge port that leads to a tire are provided in the body portion of the housing. Further, the switching tool can be moved from a position (retracted position) away from the lid part in the body part to a position (break position) at which the lid part is broken by the tip breaking part.

  In the puncture repair device of Patent Document 1, when the switching tool is in the retracted position, the inlet and the discharge port communicate with each other through the main communication passage formed in the switching tool, and the high-pressure air supplied from the high-pressure air source into the trunk portion. Is fed into the tire.

  Further, in the puncture repair device of Patent Document 1, when the switching tool is at the breaking position, the high-pressure air supplied from the high-pressure air source into the trunk through the main communication passage of the switching tool is supplied into the storage container. Thereby, the sealing agent is pushed out from the outlet by the static pressure of the air pocket formed in the storage container, and this sealing agent is formed between the inner peripheral surface of the trunk portion and the outer peripheral surface of the switching tool in the trunk portion. It is supplied into the tire through the gap and the discharge port. Further, the switching tool is formed with a sub-communication path that penetrates between the inner peripheral surface of the main communication path and the outer peripheral surface of the switching tool. In the puncture repair device, the switching tool is in a state where the lid portion is broken, The sealing agent flowing into the main communication passage (reverse flow) is pushed through the auxiliary communication passage into the gap formed between the inner peripheral surface of the trunk portion and the outer peripheral surface of the switching tool in the trunk portion. The sealing agent that has flowed into the gap from the storage container joins and is supplied from the discharge port into the tire.

  Further, in the puncture repair device of Patent Document 1, the storage container is configured as an operation unit for operating the switching tool, and the user pushes the storage container downward while the switching tool is in the retracted position. This pressing force causes the switching tool to move upward relative to the container and reach the breaking position.

By the way, in the puncture repair apparatus of patent document 1, in the state which has a switching tool in a fracture | rupture position, the front-end | tip fracture | rupture part of this switching tool is hold | maintained slightly upwards from the taking-out port of a storage container. For this reason, a part of the high-pressure air supplied into the container through the main communication passage of the switching tool is caught in the sealing agent flowing into the gap in the trunk through the take-out port. The air is bubbled and mixed in the sealing agent, and is supplied into the tire together with the sealing agent.
Japanese Patent Laid-Open No. 2005-199618

  However, when air (bubbles) is mixed in the sealing agent, solid components such as filler and granular filler mixed in the sealing agent are separated from the liquid component, and the fixed component separated from the liquid component is clogged in the tire valve. The phenomenon tends to occur. Further, when the amount of air mixed in the sealing agent increases, the apparent specific gravity of the sealing agent decreases, and the injection rate of the sealing agent into the tire decreases.

  Further, like the puncture repair device of Patent Document 1, the container outlet is sealed with a lid made of aluminum foil, a resin film or the like, and a sealing material such as the lid is used when supplying the sealing agent into the tire. When the switch breaks, a part of the sealing material (fragment) mixes in the sealing agent in the container, and the fracture fragment clogs the pressure hose or tire valve that connects the discharge port to the tire valve. There is a possibility that the supply speed of the agent may be reduced or the sealing agent may not be supplied in the worst case.

  In view of the above facts, the object of the present invention is to prevent air from entering the sealing agent supplied into the pneumatic tire and lowering the supply rate of the sealing agent, and sealing from the discharge port of the liquid agent container. Tire sealing / pump-up device that does not require breaking the sealing material that seals the outlet when discharging the agent.

  A tire sealing / pump-up device according to claim 1 of the present invention is a tire sealing / pump-up device that selectively supplies one of a liquid sealing agent and compressed air into a pneumatic tire. A liquid agent container having a discharge port for discharging the sealing agent and a pressurized liquid supply chamber communicating with the inside of the liquid agent container through the discharge port are provided. An injection unit having a cylinder hole communicating with the outside, a first air supply path having one end connected to the injection unit and communicating with the pressurized liquid supply chamber, and one end connected to the injection unit And the other end is connected to a pneumatic tire to connect the pressurized liquid supply chamber into the pneumatic tire, the cylinder hole, the pressurized liquid supply chamber, and the It is inserted into the liquid container through the outlet, and moves between an air supply position that closes the cylinder hole and the discharge port, and a gas-liquid supply position that closes the cylinder hole and opens the discharge port. When the plunger member is in the gas-liquid supply position, the first air supply path is communicated with the interior of the liquid container, and the plunger member is provided in the plunger member. When in the air supply position, the second air supply path is closed with respect to the first air supply path, and when the plunger member is in the air supply position, the first air supply path, When the compressed air is supplied into the pneumatic tire through the pressurized liquid supply chamber and the gas-liquid supply path, and the plunger member is in the gas-liquid supply position, the first air supply path and the second air supply are supplied. Compressed air was fed into the liquid agent container, and having an air supply means for applying a pressure of the compressed air in the sealing agent in the solution container, a through.

  In the tire sealing / pump-up device according to claim 1 of the present invention, when the plunger member is in the air supply position, the plunger member closes the cylinder hole of the injection unit and the discharge port of the liquid container, respectively. Since the means communicates with the pneumatic tire through the first air supply path, the pressurized liquid supply chamber, and the gas-liquid supply path, the compressed air generated by the air supply means is the first air supply path, the pressurized liquid supply chamber. In addition, the gas is supplied into the pneumatic tire through the gas-liquid supply path, but the sealing agent is not supplied into the pneumatic tire.

  At this time, since the discharge port of the liquid agent container is closed by the plunger member at the air supply position, a sealable material that can be broken to seal the discharge port of the liquid agent container as in a conventional sealing / pump-up device. Therefore, it is not necessary to block the discharge port.

  In the tire sealing / pump-up device according to claim 1, when the plunger member is in the gas-liquid supply position, the plunger member closes the cylinder hole of the injection unit and opens the discharge port of the liquid container. Since the supply means communicates with the liquid agent container through the first air supply path and the second air supply path, and the sealing agent in the liquid agent container flows into the pressurized liquid supply chamber of the injection unit through the discharge port, the air supply The compressed air generated by the means is supplied into the liquid agent container through the first air supply path and the second air supply path, and forms an air reservoir on the liquid surface of the sealing agent accommodated in the liquid agent container.

  Therefore, the air pressure of the compressed air that forms an air pocket acts on the sealing agent contained in the liquid agent container, and the sealing agent that flows into the pressurized liquid supply chamber due to the air pressure and the water head pressure passes through the gas-liquid supply path. To be supplied (pumped) into the pneumatic tire. Thereafter, when the supply of the entire amount of the sealing agent in the liquid container is substantially completed into the pneumatic tire, the compressed air generated by the air supply means is the first air supply path, the second air supply path, the liquid container, It is supplied into the pneumatic tire through the pressurized liquid supply chamber and the gas-liquid supply path.

  At this time, the discharge port of the liquid agent container is opened when the plunger member at the air supply position moves to the gas-liquid supply position, so that the discharge port of the liquid agent container is opened as in the conventional sealing / pump-up device. Part of the sealing material that has blocked the discharge port by being opened is not mixed into the sealing agent.

  The plunger member is inserted into the liquid agent container through the cylinder hole and the pressurized liquid supply chamber in the injection unit and the discharge port of the liquid container, and the upper end side of the plunger member is positioned above the discharge port of the liquid agent container. Therefore, when the plunger member is at the gas-liquid supply position, the upper opening end that opens into the liquid agent container in the second air supply path provided in the plunger member is located above the discharge port. Can be located. Therefore, if the insertion length into the liquid agent container on the upper end side of the plunger member is increased, the sealing agent in which the air supplied into the liquid agent container through the second air supply path flows into the pressurized liquid supply chamber through the discharge port. Can be effectively prevented.

  A sealing / pump-up device according to claim 2 of the present invention is the sealing / pump-up device according to claim 1, wherein an upper opening end that opens into the liquid container in the second air supply path is provided. When the plunger member is in the gas-liquid supply position, the plunger member is positioned 30 mm or more above the discharge port along the vertical direction.

  The sealing / pump-up device according to claim 3 of the present invention is the sealing / pump-up device according to claim 2, wherein an upper opening end that opens into the liquid container in the second air supply path opens. When the plunger member is at the gas-liquid supply position, the plunger member is positioned upward along the vertical direction with respect to the liquid surface of the sealing agent accommodated in the liquid agent container.

  A sealing / pump-up device according to a fourth aspect of the present invention is the sealing / pump-up device according to any one of the first to third aspects, wherein when the plunger member is in the air supply position, When the outlet is closed and the liquid / air supply position is at the liquid supply position, the cylinder block is closed when the air supply position is closed. When in the gas-liquid supply position, a first closing portion that is detached from the cylinder hole is provided.

  The sealing / pump-up device according to claim 5 of the present invention is the sealing / pump-up device according to claim 4, wherein the liquid agent container is formed with an insertion port facing the discharge port, and the plunger is passed through the insertion port. The upper end side of the member protrudes to the outside of the liquid container, and the plunger member closes the insertion port when in the air supply position, and detaches from the insertion port when in the gas-liquid supply position. A blocking portion and a fourth blocking portion that closes the insertion port when in the gas-liquid supply position and separates from the insertion port when in the air supply position are provided.

  The sealing / pump-up device according to a sixth aspect of the present invention is the sealing / pump-up device according to any one of the first to fifth aspects, wherein the plunger member includes the liquid container and the plunger member from the outside of the device. In response to an operating force applied to one or both of the air supply position and the gas-liquid supply position, the air supply position and the gas-liquid supply position move relative to each other.

  As described above, according to the sealing / pump-up device for a tire of the present invention, it is possible to prevent air from being mixed into the sealing agent supplied into the pneumatic tire and to reduce the supply rate of the sealing agent, and When the sealing agent is discharged from the discharge port of the liquid agent container, it is unnecessary to break the sealing material that seals the discharge port.

  Hereinafter, a tire sealing / pump-up device according to an embodiment of the present invention will be described.

[First embodiment]
(Configuration of sealing / pump-up device)
FIG. 1 shows a tire sealing / pump-up device (hereinafter simply referred to as “sealing / pump-up device”) according to a first embodiment of the present invention. The sealing / pump-up device 10 is configured to form a puncture hole in a tire without replacing the tire and the wheel when a pneumatic tire (hereinafter simply referred to as “tire”) mounted on a vehicle such as an automobile punctures. It is repaired with a sealing agent to repressurize (pump up) the internal pressure of the tire to a predetermined reference pressure.

  As shown in FIG. 1, the sealing / pump-up device 10 includes a compressor unit 12. The compressor unit 12 includes a motor, an air pump, a power circuit, and the like. A power cable (not shown) extending to the outside is provided. For example, by inserting a plug provided at the tip of the power cable into a socket of a cigarette lighter installed in the vehicle, power can be supplied to a motor or the like through a power circuit by a battery mounted on the vehicle. Here, the compressor unit 12 can generate compressed air having a pressure (for example, 0.2 MPa to 0.5 MPa) higher than the reference pressure defined for each type of the tire 14 to be repaired by the air pump.

  The sealing / pump-up device 10 is provided with a liquid container 16 containing a sealing agent (see FIG. 2) and an injection unit 18 to which the liquid container 16 is connected. As shown in FIG. 2, the liquid container 16 has a circular, oval or elliptical cross section in which the cross-sectional area along the radial direction is substantially constant on the upper end side along the vertical direction (arrow H direction) of the apparatus. The body portion 20 is formed in a substantially cylindrical shape and protrudes downward along the height direction through a shoulder portion 22 whose cross-sectional area gradually decreases from the lower end side of the body portion 20. The neck portion 24 is integrally formed.

  A cylindrical space penetrating in the vertical direction is formed in the neck portion 24 on the inner peripheral side, and this cylindrical space is for discharging the liquid sealing agent 28 accommodated in the liquid agent container 16 to the outside of the container. It is set as the discharge outlet 25. In the neck portion 24, a planar joining surface 30 is formed in an annular shape on the outer peripheral side of the discharge port 25. Further, the liquid agent container 16 is integrally formed with a cylindrical plunger receiving portion 26 so as to protrude into the container at the center of the top plate portion.

  Here, 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 28 than a prescribed amount (for example, 200 g to 400 g) according to the type and size of the tire 14 to be repaired by the sealing / pump-up device 10. . An air layer G is formed above the sealing agent 28 in the liquid agent container 16 in a state where a larger amount of the sealing agent 28 than the prescribed amount is accommodated. However, in order to prevent the sealing agent 28 from being deteriorated due to oxidation, nitridation, etc., an inert gas such as Ar may be enclosed in the liquid agent container 16 together with the sealing agent 28 at the time of shipment. The agent 28 may be filled without a gap.

  As shown in FIG. 2, the injection unit 18 is provided with a unit main body 32 formed in a substantially columnar shape, and a leg 34 connected to the lower end of the unit main body 32. The unit main body 32 is integrally formed with a flange portion 36 extending from the lower end portion to the outer peripheral side. The leg portion 34 is formed in a cylindrical shape having a larger diameter than the injection unit 18, and the top plate portion 38 is joined to the lower surface side of the flange portion 36.

  The unit body 32 is formed with a cylindrical tube portion 40 on the upper end side, and the space on the inner peripheral side of the tube portion 40 is added with the sealing agent 28 discharged from the liquid agent container 16 through the discharge port 25. The pressure supply liquid chamber 42 is used. The upper end surface of the cylindrical portion 40 is bonded to the bonding surface 30 of the liquid agent container 16 by spin welding, ultrasonic welding, adhesion, or the like. Thereby, the neck portion 24 of the liquid agent container 16 is connected and fixed to the cylindrical portion 40 in the unit main body 32, and the space in the liquid agent container 16 communicates with the pressurized liquid supply chamber 42 in the unit main body 32 through the discharge port 25.

  The unit main body 32 is integrally formed with a bottom plate portion 44 that closes the lower end side of the pressurized liquid supply chamber 42, and the bottom plate portion 44 has a cylindrical boss so as to protrude upward at the center thereof. The part 46 is integrally formed. A cylindrical space is formed on the inner peripheral side of the boss portion 46. The cylindrical space opens with the upper end facing the pressurized liquid supply chamber 42, and the lower end on the outside of the unit body 32. The cylinder hole 48 is opened to face the space. Here, the cylinder hole 48 and the discharge port 25 have the same inner diameter and are arranged coaxially.

  As shown in FIG. 2, the sealing / pump-up device 10 includes a substantially rod-shaped plunger member 50 that is inserted into the liquid agent container 16 through the cylinder hole 48, the pressurized liquid supply chamber 42, and the discharge port 25. ing. The plunger member 50 is inserted from the lower end side of the unit main body 32 to the inside of the liquid agent container 16, and a stopper portion 52 formed at the lower end portion of the plunger member 50 in a disk shape having a larger diameter than the inner diameter of the cylinder hole 48. Is formed, and a cylindrical lower blocking portion 54 protruding upward from the center of the upper surface of the stopper portion 52 is formed coaxially. A grip portion 56 having a shape that can be easily gripped by an operator's finger is formed at the center of the lower surface of the stopper portion 52 so as to protrude downward.

  The lower closing portion 54 of the plunger member 50 has an outer diameter slightly smaller than the inner diameter of the cylinder hole 48. The lower closing portion 54 is formed with a fitting insertion groove 58 extending in the circumferential direction at an intermediate portion in the vertical direction on the outer peripheral surface, and a rubber O-ring is formed in the fitting insertion groove 58. The inner peripheral side of 60 is inserted. The plunger member 50 is coaxially formed with a connecting portion 62 having a smaller diameter than the lower closing portion 54 above the lower closing portion 54, and has a diameter larger than that of the connecting portion 62 above the connecting portion 62. An intermediate blocking portion 64 having a columnar shape is formed coaxially. The intermediate blocking portion 64 has an outer diameter that substantially matches the outer diameter of the lower blocking portion 54, and is slightly smaller than the inner diameter of the cylinder hole 48 and the discharge port 25.

  In the intermediate closing portion 64 of the plunger member 50, fitting insertion grooves 66 extending in the circumferential direction are formed on the upper end portion and the lower end portion of the outer peripheral surface over the entire circumference. The inner peripheral side of the rubber O-ring 60 is inserted into each.

  As shown in FIG. 2, the plunger member 50 is integrally formed with an injection tube 68 that is smaller in diameter and elongated than the intermediate closing portion 64 on the upper side of the intermediate closing portion 64. A fitting insertion groove 70 extending in the circumferential direction is formed on the outer peripheral surface of the injection pipe 68 in the circumferential direction, and the inner peripheral side of the O-ring 72 is fitted into the fitting insertion groove 70. It is inserted.

  The plunger member 50 extends from the upper end surface of the injection tube 68 to the intermediate portion in the vertical direction of the intermediate closing portion 64 and bends in an L shape within the intermediate closing portion 64 to be the central portion in the radial direction of the intermediate closing portion 64. A second air supply path 74 extending from the outer periphery to the outer peripheral surface is formed. That is, the second air supply path passes between the upper end surface of the injection pipe 68 in the plunger member 50 and the outer peripheral surface of the intermediate closing portion 64. Here, the lower open end of the second air supply path is located in the middle of the pair of O-rings 60 on the outer peripheral surface of the intermediate closing portion 64.

  As shown in FIG. 2, the unit main body 32 includes an air supply pipe 76 projecting from one end along the radial direction on the outer peripheral surface thereof to the outer peripheral side and a gas-liquid supply pipe 78 projecting from the other end to the outer peripheral side. Are integrally formed. The air supply pipe 76 has a base end portion that penetrates the cylindrical portion 40 and is joined to the outer peripheral surface of the boss portion 46. Further, the gas-liquid supply pipe 78 has a base end joined to the outer peripheral surface of the cylindrical portion 40 of the unit main body 32. The air supply pipe 76 is formed with a first air supply passage 80 penetrating between the front end surface of the air supply pipe 76 and the inner peripheral surface of the cylinder hole 48, and the gas-liquid supply pipe 78 has a gas-liquid supply. A gas-liquid supply path 82 that penetrates between the front end surface of the pipe 78 and the inner wall surface of the pressurized liquid supply chamber 42 is formed. Here, the gas-liquid supply path 82 always communicates with the pressurized liquid supply chamber 42.

  The plunger member 50 is supported by the injection unit 18 so as to be movable in the vertical direction, and an air supply position (see FIG. 2) as an upper limit position and a gas-liquid supply position (see FIG. 2) as a lower limit position along the vertical direction. 3)). As shown in FIG. 2, the plunger member 50 in the air supply position inserts the lower closing portion 54 into the cylinder hole 48 to close the cylinder hole 48 and moves the intermediate closing portion 64 into the discharge port 25. The ejection port 25 is closed by insertion.

  At this time, the lower blocking portion 54 presses the outer peripheral side of the O-ring 60 disposed at a substantially central position along the vertical direction to the inner peripheral surface of the cylinder hole 48 over the entire periphery, thereby providing high airtightness. Secure. Moreover, the intermediate | middle obstruction | occlusion part 64 ensures the high airtightness and liquid-tightness by pressing the outer peripheral side of the O-ring 60 arrange | positioned at the upper end part and the lower end part to the inner peripheral surface of the discharge outlet 25 over a perimeter, respectively. To do. When the plunger member 50 is in the air supply position, the lower closing portion 54 is positioned below the opening end of the first air supply path 80 in the cylinder hole 48. Thus, the first air supply path 80 communicates with the pressurized liquid supply chamber 42 through the space in the cylinder hole 48.

  The plunger member 50 in the air supply position moves the plunger member 50 downward against its movement resistance when the user grips the grip portion 56 and applies a downward operation force (tensile force). Can do. As shown in FIG. 3, when the plunger member 50 is moved (lowered) from the air supply position to the gas-liquid supply position, the lower blocking portion 54 is released downward from the cylinder hole 48 to open the discharge port 25. At the same time, the intermediate closing part 64 is detached downward from the discharge port 25 and is inserted into the cylinder hole 48 instead of the lower closing part 54 to close the cylinder hole 48. At this time, the intermediate closing portion 64 has high airtightness and liquid tightness by bringing the outer peripheral side of the O-ring 60 disposed at the upper end portion and the lower end portion thereof into pressure contact with the inner peripheral surface of the cylinder hole 48 over the entire circumference. Secure.

  In addition, as shown in FIG. 2, the plunger member 50 in the air supply position has the upper end portion of the injection pipe 68 inserted into the plunger receiving portion 26, and the O-ring 72 is placed around the inner peripheral surface of the plunger receiving portion 26. Is in pressure contact. Thereby, the opening end of the upper end side in the 2nd air supply path 74 of the plunger member 50 is obstruct | occluded. Further, the opening end on the lower end side of the second air supply path 74 of the plunger member 50 is isolated from the inside of the liquid agent container 16 and the pressurized liquid supply chamber 42 by the upper and lower O-rings 60 of the intermediate closing portion 64, respectively. .

  When the operator moves (lowers) the plunger member 50 from the air supply position to the gas-liquid supply position, as shown in FIG. 3, the upper end portion of the injection pipe 68 is detached downward from the plunger receiving portion 26. The upper end side of the second air supply path 74 is opened, and the lower end side of the second air supply path 74 is opened via a gap formed between the outer peripheral surface of the intermediate closing portion 64 and the inner peripheral surface of the cylinder hole 48. 1 Air communication path 80 communicates.

  As shown in FIG. 1, the sealing / pump-up device 10 is provided with a pressure-resistant hose 84 extending outward from the compressor unit 12. The tip of the pressure hose 84 is connected to the air supply pipe 76 of the unit main body 32 (injection unit 18) via a check valve 86. The pressure hose 84 has a base end connected to an air pump in the compressor unit 12, and supplies compressed air generated by the air pump through the check valve 86 to the first air supply path 80 when the compressor unit 12 is operated.

  The check valve 86 allows the flow of compressed air from the compressor unit 12 into the pressurized liquid supply chamber 42, but allows the compressed air and the sealing agent to flow from the pressurized liquid supply chamber 42 to the compressor unit 12. Stop. As a result, when the operation of the compressor unit 12 is stopped, the sealing agent in the pressurized liquid supply chamber 42 flows back into the air pump due to the air pressure from the tire 14, thereby preventing a failure of the compressor unit 12. ing.

  The sealing / pump-up device 10 is provided with a joint hose 90 whose base end is connected to a gas-liquid supply pipe 78 of the unit main body 32 via a nipple 88. The joint hose 90 communicates with the gas-liquid supply path 82 of the unit main body 32 through the nipple 88 so that the compressed air and the sealing agent 28 can flow therethrough. A valve adapter 92 that is detachably connected to the tire valve 15 of the tire 14 is provided at the distal end portion of the joint hose 90.

  As shown in FIG. 1, when the sealing agent 28 is supplied to the tire 14, the sealing / pump-up device 10 is installed on the road surface, the ground, etc. so that the vertical direction of the device substantially coincides with the vertical direction. Installed on the surface. At this time, as shown in FIG. 3, when the plunger member 50 is in the gas-liquid supply position, the upper end side of the second air supply path 74 opened to the upper end surface of the plunger member 50 is located in the liquid agent container 16. A predetermined amount of the sealing agent 28 is accommodated so as to be positioned above the liquid surface of the sealing agent 28.

(Operation of sealing / pump-up device)
Next, an operation procedure for repairing the punctured tire 14 using the sealing / pump-up device 10 according to the present embodiment will be described.

  When puncture occurs in the tire 14, first, the operator screws the valve adapter 92 of the joint hose 90 onto the tire valve 15 of the tire 14, and pressurizes liquid supply through the joint hose 90 and the gas / liquid supply path 82. The chamber 42 is communicated with the inside of the tire 14.

  Next, the operator moves the plunger member 50 at the air supply position (see FIG. 2) to the gas-liquid supply position (see FIG. 3) while holding the grip portion 56 of the plunger member 50. As a result, as shown in FIG. 3, the sealing agent 28 in the liquid container 16 flows into the pressurized liquid supply chamber 42 through the discharge port 25. When the operator moves the plunger member 50 to the gas-liquid supply position, the compressor unit 12 is operated after the vertical direction of the apparatus is substantially matched with the vertical direction by installing the injection unit 18 on the installation surface. The compressed air generated by the compressor unit 12 is supplied into the liquid agent container 16 through the pressure hose 84, the first air supply path 80 of the unit body 32 and the second air supply path 74 of the plunger member 50. At this time, since the upper end of the second air supply path 74 is above the liquid level of the sealing agent 28, the compressed air supplied into the liquid agent container 16 through the second air supply path 74 is mixed into the sealing agent 28. Is reliably prevented.

  The compressed air supplied into the liquid container 16 increases the air pressure of the air reservoir G while expanding the volume of the air reservoir G formed above the sealing agent 28 in the liquid agent container 16. The sealing agent 28 that has flowed into the pressurized liquid supply chamber 42 is pushed out into the gas-liquid supply path 82 by the air pressure and the water head pressure of the air reservoir G, and is pumped to the tire 14 side in the gas-liquid supply path 82 and the joint hose 90. And injected into the tire 14.

  After that, when almost the entire amount of the sealing agent 28 is discharged from the liquid container 16 and the prescribed amount of the sealing agent 28 is injected into the tire 14 through the joint hose 90, the pressure hose 84 is connected to the first air supply path 80, the second The compressed air generated by the compressor unit 12 passes through the joint hose 90 and the tire communicates with the joint hose 90 through the air supply path 74, the internal space of the liquid agent container 16, the pressurized liquid supply chamber 42, and the gas-liquid supply path 82. Supply into 14 is started.

  After that, when the operator confirms that the internal pressure of the tire 14 has become the specified pressure by the pressure gauge 94 provided in the compressor unit 12, the operator stops the compressor unit 12 and removes the valve adapter 92 from the tire valve 15. Remove.

  The worker travels preliminarily for a certain distance using the tire 14 into which the sealing agent 28 has been injected within a certain time after the completion of the inflation of the tire 14. As a result, the sealing agent 28 is uniformly diffused on the inner wall surface of the tire 14, and a part of the sealing agent 28 is filled in the puncture hole to close the puncture hole. After completing the preliminary traveling, the operator re-measures the internal pressure of the tire 14, screwing the valve adapter 92 of the joint hose 90 to the tire valve 15 again as necessary, and restarting the compressor unit 12 to remove the tire 14. Pressurize to the specified internal pressure. Thereby, the puncture repair of the tire 14 is completed, and the tire 14 can be used to travel at a constant speed or less (for example, 80 km / h or less) within a certain distance.

  The sealing / pump-up device 10 according to the present embodiment can also be used as a device (pump-up device) for supplying only compressed air into the tire 14 to increase the tire 14 internal pressure. That is, when the internal pressure falls below the specified pressure without causing the tire 14 to puncture, the operator supplies the plunger member 50 with air after screwing the valve adapter 92 of the joint hose 90 to the tire valve 15 of the tire 14. The compressor unit 12 is operated without moving from the position to the gas-liquid supply position. Thereby, compressed air generated by the compressor unit 12 is supplied into the tire 14 through the pressure hose 84, the first air supply path 80, the internal space of the cylinder hole 48, the gas-liquid supply path 82 and the joint hose 90, The internal pressure of the tire 14 can be increased by this compressed air.

  When the amount of the sealing agent 28 contained in the liquid agent container 16 is larger than the appropriate injection amount defined by the type of the tire 14 or the like, the appropriate amount of the sealing agent 28 is injected from the liquid agent container 16 into the tire 14. The operator may move (return) the plunger member 50 in the gas / liquid supply position to the air supply position at the same timing. As a result, the discharge port 25 of the liquid agent container 16 is closed by the intermediate closing portion 64 of the plunger member 50 to prevent the sealant 28 from flowing into the pressurized liquid supply chamber 42 from the liquid agent container 16 and the compressor unit 12. Compressed air generated by the above is started to be supplied into the tire 14 through the pressure-resistant hose 84, the first air supply path 80, the internal space of the cylinder hole 48, the gas-liquid supply path 82, and the joint hose 90.

  In the sealing / pump-up device 10 according to the first embodiment of the present invention described above, when the plunger member 50 is in the air supply position, the lower closing portion 54 and the intermediate closing portion 64 of the plunger member 50 are the injection unit 18. By closing the cylinder hole 48 and the discharge port 25 of the liquid agent container 16, the compressor unit 12 can be connected to the pressure hose 84, the first air supply path 80, the pressurized liquid supply chamber 42, the gas / liquid supply path 82, and the joint hose. Since it communicates into the tire 14 through 90, the compressed air generated by the compressor unit is supplied into the tire 14, but the sealing agent 28 is not supplied into the tire 14.

  At this time, the discharge port 25 of the liquid agent container 16 is closed by the intermediate closing portion 64 of the plunger member 50 at the air supply position, so that the liquid agent container is similar to a conventional puncture repair device (sealing / pump-up device). In order to seal the 16 discharge ports, it is not necessary to close the discharge ports with a breakable sealing material such as aluminum foil.

  In the sealing / pump-up device 10, when the plunger member 50 moves from the air supply position to the gas-liquid supply position, the lower closing portion 54 of the plunger member 50 closes the cylinder hole 48 of the injection unit 18 and discharges the liquid container 16. By opening the outlet 25, the compressor unit 12 communicates with the liquid agent container 16 through the pressure hose 84, the first air supply path 80 and the second air supply path 74, and the sealing in the liquid agent container 16 through the discharge port 25. Since the agent 28 flows into the pressurized liquid supply chamber 42 of the injection unit 18, the compressed air generated by the compressor unit 12 passes through the pressure hose 84, the first air supply path 80 and the second air supply path 74. An air pocket formed on the liquid surface of the sealing agent 28 supplied into the container 16 and accommodated in the liquid container 16. Increase the air pressure.

  Therefore, the air pressure of the compressed air that forms the air reservoir G acts on the sealing agent 28 accommodated in the liquid container 16, and the sealing agent 28 that has flowed into the pressurized liquid supply chamber 42 due to the air pressure and the water head pressure, The gas is supplied (pumped) into the tire 14 through the gas-liquid supply path 82 and the joint hose 90. Thereafter, when the supply of the entire amount of the sealing agent 28 in the liquid agent container 16 is substantially completed into the tire 14, the compressed air generated by the compressor unit 12 is supplied with the pressure hose 84, the first air supply path 80, and the second air supply. It is supplied into the tire 14 through the path 74, the inside of the liquid container 16, the pressurized liquid supply chamber 42, the gas / liquid supply path 82, and the joint hose 90.

  At this time, the discharge port 25 of the liquid agent container 16 opens the discharge port 25 only by moving the plunger member 50 located at the air supply position to the gas-liquid supply position, and the intermediate closing portion 64 is detached from the discharge port 25. Therefore, unlike the conventional sealing / pump-up device, a part of the sealing material that has blocked the discharge port by opening the discharge port 25 of the liquid container 16 is not mixed into the sealing agent 28. .

  As a result, according to the sealing / pump-up device 10, a part of the sealing material (fragment) is mixed in the sealing agent in the container, and the fracture fragment communicates the discharge port with the tire valve. Since the tire valve is not clogged, it is possible to surely prevent the supply rate of the sealing agent from being lowered or the supply of the sealing agent from being disabled due to the influence of broken pieces of the sealing material.

  In the sealing / pump-up device 10, when the plunger member 50 is in the gas / liquid supply position, the sealing agent 28 in which the upper end of the second air supply path 74 provided in the plunger member 50 is accommodated in the liquid agent container 16. Since the compressed air supplied into the liquid agent container 16 through the second air supply path 74 flows into the pressurized liquid supply chamber 42 through the discharge port 25, the sealing agent flows into the pressurized liquid supply chamber 42. It is possible to reliably prevent mixing.

  As a result, according to the sealing / pump-up device 10 according to the present embodiment, air can be prevented from being mixed into the sealing agent 28 supplied into the tire 14 and the supply rate of the sealing agent 28 can be reduced, and the liquid agent When the sealing agent 28 is discharged from the discharge port 25 of the container 16, it is unnecessary to break the sealing material that seals the discharge port 25, so that the sealing material is the gas-liquid supply path 82, the joint hose 90, the tire valve 15. It is reliably prevented that the flow path of the sealing agent 28 such as clogging is blocked.

  In the sealing / pump-up device 10 according to the present embodiment, when the plunger member 50 is in the gas / liquid supply position, the upper end of the second air supply path 74 provided in the plunger member 50 is sealed in the liquid agent container 16. Although the compressed air is prevented from being mixed into the sealing agent 28 that flows into the pressurized liquid supply chamber 42 from the liquid agent container 16 by being positioned above the liquid level of the agent 28, According to the experiments by the inventors of the present application, the upper end of the second air supply path 74 is not positioned above the liquid level of the sealing agent 28 in the liquid agent container 16 even if the upper end of the second air supply path 74 is positioned above the liquid level of the sealing agent 28 in the liquid agent container 16. If it is positioned above the upper end (opening end) of the discharge port 25 by a predetermined distance or more, air is mixed into the sealing agent 28 flowing into the pressurized liquid supply chamber 42 from the liquid agent container 16. It has become clear that you can stop.

  Specifically, as shown in [Table 1] below, even if the upper end of the second air supply path 74 is immersed in the sealing agent 28, the upper end of the second air supply path 74 is connected to the discharge port 25. If it is positioned at least 30 mm above the upper end (opening end) of the liquid, air does not enter the sealing agent 28 flowing into the pressurized liquid supply chamber 42 from the liquid agent container 16, and the sealing agent is caused by the mixing of air. It is possible to substantially prevent the injection speed of the 28 tires 14 from being lowered.

  Further, the upper end of the second air supply path 74 is positioned 30 mm or more above the upper end (opening end) of the discharge port 25 to prevent air (bubbles) from being mixed into the sealing agent 28. It is also possible to prevent the solidification of the sealing agent 28 from being promoted by the bubbles. As a result, as shown in [Table 1], when the upper end of the second air supply path 74 is positioned 0 to 10 mm above the upper end (opening end) of the discharge port 25, the sealing agent 28 is injected. Although the solidified flux (solidified flux) remained in the tire valve 15 after completion, the upper end of the second air supply path 74 was positioned 30 mm or more above the upper end (opening end) of the discharge port 25. In this case, no solidified flux remained in the tire valve 15 after the injection of the sealing agent 28 was completed.

  In [Table 1], the length of the injection pipe 68 in the sealing / pump-up device 10 according to the present embodiment is changed under the conditions of a temperature of 20 ° C. and a compressed air pressure of 350 (hpa). The result of supplying the sealing agent 28 into the tire 14 by the pump-up device is shown. In this [Table 1], H (mm) is the distance from the upper end (opening end) of the discharge port 25 to the upper end of the second air supply path 74, and T (seconds) is compressed to the injection unit 18 by the compressor unit 12. The injection time from when the supply of air is started to when 450 g of the sealing agent 28 is completely injected into the tire 14 is shown. Further, the injection time T when the distance H is described as (above the liquid level) is such that the upper end of the second air supply path 74 is at the liquid level of the sealing agent 28 in the liquid agent container 16 as shown in FIG. On the other hand, the case where it is located upward is shown.

[Second Embodiment]
(Configuration of sealing / pump-up device)
Next, a tire sealing / pump-up device according to a second embodiment of the present invention will be described. 4 and 5 show the injection unit 18 and the liquid agent container 16 in the sealing / pump-up device 100 according to the present embodiment. The sealing / pump-up device 100 uses the injection unit 18 and the liquid agent container 16 shown in FIGS. 4 and 5 instead of the injection unit 18 and the liquid agent container 16 in the sealing / pump-up device 10 according to the first embodiment. It is done. In the sealing / pump-up device 100 according to the present embodiment, the same parts as those of the sealing / pump-up device 10 according to the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  The sealing / pump-up device 100 according to the present embodiment is different from the sealing / pump-up device 10 according to the first embodiment in that the inside of the liquid container 16 is placed on the inner peripheral side of the plunger receiver 26 in the liquid container 16. A disk-like stopper portion 104 is coaxially connected and fixed to the point where the insertion port 102 communicating with the outside is formed and the upper end surface of the plunger member 50, and this stopper portion 104 is outside the liquid agent container 16. It is a point that is arranged.

  In addition to the above differences, the sealing / pump-up device 100 has a fitting groove 106 formed below the fitting groove 66 in the injection pipe 68 of the plunger member 50. Similar to the insertion groove 66, the inner peripheral side of the O-ring 72 is inserted. Further, the second air supply path 74 formed in the plunger member 50 is formed with a pair of branch portions 108 branched in a T shape along the radial direction at the upper end portion thereof, and the pair of branch portions 108. Are opened at the intermediate portion between the fitting groove 70 and the fitting groove 106 on the outer peripheral surface of the injection tube 68.

  In the sealing / pump-up device 100, as shown in FIG. 4, when the plunger member 50 is in the air supply position, the upper end side of the injection pipe 68 in the plunger member 50 passes through the insertion port 102 and is above the liquid agent container 16. Protruding. At this time, the plunger member 50 closes the insertion port 102 so as to be in an airtight state by bringing the O-ring 72 of the fitting groove 106 into pressure contact with the inner peripheral surface of the insertion port 102 over the entire circumference.

  In the sealing / pump-up device 100, when the plunger member 50 is in the air supply position, the user applies a downward operating force (pressing force) to the upper surface side of the stopper portion 104, thereby moving the plunger member 50. It can be moved downward against resistance. As shown in FIG. 5, when the plunger member 50 is moved (lowered) from the air supply position to the gas / liquid supply position, the lower surface side of the stopper portion 104 comes into contact with the top surface portion of the liquid agent container 16 to restrict downward movement. Is done. At this time, the plunger member 50 presses the O-ring 72 of the fitting insertion groove 66 to the inner peripheral surface of the insertion port 102 over the entire circumference to close the insertion port 102 so as to be in an airtight state, and the second air The branch portion 108 of the supply path 74 is inserted into the liquid agent container 16. Accordingly, the second air supply path 74 communicates with the liquid agent container 16.

(Operation of sealing / pump-up device)
Next, when repairing the punctured tire 14 using the sealing / pump-up device 100 according to the present embodiment, an operator first uses the sealing / pump-up device 10 according to the first embodiment. Similarly, the valve adapter 92 of the joint hose 90 is screwed to the tire valve 15 of the tire 14, and the pressurized liquid supply chamber 42 is communicated into the tire 14 through the joint hose 90 and the gas / liquid supply path 82.

  Next, the operator presses the stopper portion 104 of the plunger member 50 supported above the liquid container 16 downward to move the plunger member 50 in the air supply position (see FIG. 4) to the gas-liquid supply position (see FIG. 4). 5). As a result, as shown in FIG. 5, the sealing agent 28 in the liquid container 16 flows into the pressurized liquid supply chamber 42 through the discharge port 25, so if compressed air is generated by operating the compressor unit 12, As in the case of the sealing / pump-up device 10 according to the first embodiment, the sealing agent 28 in the liquid agent container 16 is supplied into the tire 14 and the supply of the sealing agent 28 in the liquid agent container 16 is completed into the tire 14. Then, supply of compressed air generated by the compressor unit 12 in place of the sealing agent 28 into the tire 14 is started.

  Therefore, according to the sealing / pump-up device 100 according to the present embodiment, air is mixed into the sealing agent 28 supplied into the tire 14 as in the sealing / pump-up device 10 according to the first embodiment. Since the supply rate of the sealing agent 28 can be prevented from being lowered, and when the sealing agent 28 is discharged from the discharge port 25 of the liquid agent container 16, it is unnecessary to break the sealing material that seals the discharge port 25. The sealing material is reliably prevented from clogging the flow path of the sealing agent 28 such as the gas-liquid supply path 82, the joint hose 90, the tire valve 15, and the like.

  In the sealing / pump-up device 100, the stopper member 104 of the plunger member 50 supported above the liquid agent container 16 is pressed downward to supply the plunger member 50 at the air supply position (see FIG. 4) to the gas-liquid supply. Since it can move to the position (see FIG. 5), the operator can easily move the plunger member 50 from the air supply position to the gas-liquid supply position while the injection unit 18 and the liquid agent container 16 are installed on the installation. Compared with the sealing / pump-up device 10 according to the first embodiment, the workability when the plunger member 50 is moved from the air supply position to the gas-liquid supply position is improved.

  Of course, also in the sealing / pump-up device 100 according to the present embodiment, if the compressor unit 12 is operated while the plunger member 50 is held at the air supply position, the sealing agent 28 is not injected and compressed into the tire 14. It is also possible to increase the internal pressure of the tire 14 by supplying only air.

It is a block diagram which shows the structure of the sealing and pump-up apparatus which concerns on embodiment of this invention. It is side surface sectional drawing which shows the structure of the injection | pouring unit and liquid agent container in the sealing pump-up apparatus which concerns on the 1st Embodiment of this invention, and has shown the state which has a plunger member in an air supply position. It is side surface sectional drawing which shows the structure of the injection | pouring unit and liquid agent container in the sealing pump-up apparatus which concerns on the 1st Embodiment of this invention, and has shown the state which has a plunger member in a gas-liquid supply position. It is side surface sectional drawing which shows the structure of the injection | pouring unit and liquid agent container in the sealing pump-up apparatus which concerns on the 2nd Embodiment of this invention, and has shown the state which has a plunger member in an air supply position. It is side surface sectional drawing which shows the structure of the injection | pouring unit and liquid agent container in the sealing pump-up apparatus which concerns on the 2nd Embodiment of this invention, and has shown the state which has a plunger member in a gas-liquid supply position.

Explanation of symbols

10 Sealing / pump-up device 12 Compressor unit (air supply means)
14 Tire (Pneumatic tire)
16 Liquid container 18 Injection unit 28 Sealing agent 32 Unit main body 42 Pressurized liquid supply chamber 48 Cylinder hole 50 Plunger member 54 Lower side closing part (first closing part)
64 Intermediate closing part (second closing part)
68 Injection pipe (third obstruction part, fourth obstruction part)
74 Second air supply path (second air supply path)
76 Air supply pipe 78 Gas-liquid supply pipe 80 First air supply path (first air supply path)
82 Gas-liquid supply path 100 Sealing / pump-up device 108 Branch (second air supply path)

Claims (6)

A tire sealing / pump-up device for selectively supplying one of a liquid sealing agent and compressed air into a pneumatic tire,
A liquid agent container containing a sealing agent and having an opening for discharging the sealing agent; and
An injection unit in which a pressurized liquid supply chamber communicating with the inside of the liquid agent container through the discharge port is provided, and a cylinder hole communicating with the outside from the pressurized liquid supply chamber is formed;
A first air supply path having one end connected to the injection unit and communicating with the pressurized liquid supply chamber;
A gas-liquid supply path having one end connected to the injection unit and the other end connected to a pneumatic tire to communicate the pressurized liquid supply chamber with the pneumatic tire;
An air supply position that is inserted into the liquid container through the cylinder hole, the pressurized liquid supply chamber, and the discharge port to close the cylinder hole and the discharge port, and closes the cylinder hole and discharges the cylinder. A plunger member that is movable between a gas-liquid supply position that opens the outlet;
Provided in the plunger member, and when the plunger member is in the gas-liquid supply position, the first air supply path communicates with the interior of the liquid agent container, and when the plunger member is in the air supply position, A second air supply path closed with respect to the first air supply path;
When the plunger member is in the air supply position, compressed air is supplied into the pneumatic tire through the first air supply path, the pressurized liquid supply chamber, and the gas-liquid supply path, and the plunger member is When in the liquid supply position, compressed air is supplied into the liquid agent container through the first air supply path and the second air supply path, and the air pressure of the compressed air is applied to the sealing agent in the liquid agent container. Air supply means;
A tire sealing / pump-up device.   When the plunger member is at the gas-liquid supply position, the upper opening end that opens into the liquid container in the second air supply path is 30 mm or more along the vertical direction with respect to the discharge port. The tire sealing / pump-up device according to claim 1, wherein the tire sealing / pump-up device is located above.   When the plunger member is at the gas-liquid supply position, the upper surface of the second air supply path that faces and opens into the liquid container is the liquid surface of the sealing agent that is accommodated in the liquid container. The tire sealing / pump-up device according to claim 2, wherein the tire sealing / pump-up device is positioned upward along the vertical direction. The plunger member;
When in the air supply position, the discharge port is closed, and when in the liquid / air supply position, a second closing portion that separates from the discharge port and closes the cylinder hole;
When in the air supply position, the cylinder hole is closed, and when in the gas-liquid supply position, a first closing part that is detached from the cylinder hole;
The tire sealing / pump-up device according to claim 1, wherein the tire sealing / pump-up device is provided. Forming an insertion port facing the discharge port in the liquid container, and projecting the plunger member upper end side to the outside of the liquid container through the insertion port;
When the plunger member is in the air supply position, the insertion port is blocked, and when the plunger member is in the gas-liquid supply position, a third blocking part is formed, and when it is in the gas-liquid supply position, the insertion is performed. The tire sealing / pump-up device according to claim 4, further comprising a fourth closing portion that closes the mouth and separates from the insertion opening when in the air supply position. The plunger member receives an operation force applied to one or both of the liquid agent container and the plunger member from the outside of the apparatus, and relatively moves from one of the air supply position and the gas / liquid supply position to the other. The tire sealing / pump-up device according to any one of claims 1 to 5.