JP4512501B2 - Tire sealing and pump-up equipment - Google Patents

Description

  The present invention relates to a sealing and pump-up device for injecting a sealing agent for sealing a punctured pneumatic tire into the pneumatic tire and then supplying compressed air into the pneumatic tire to increase the internal pressure of the pneumatic tire. About.

  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. Pump-up devices (hereinafter simply referred to as “pump-up devices”) have become widespread. As this type of pump-up device, for example, there is an apparatus including a liquid bottle that is a container for storing a puncture sealing agent and an air compressor that is a supply source of compressed air. The liquid bottle contains the puncture sealant necessary for one puncture repair. A liquid injection hose is connected to the liquid bottle, and an adapter that can be connected to a tire valve on the tire side is attached to the tip of the liquid injection hose. In addition, a pressure hose for high-pressure gas is connected to the air compressor, and an adapter that can be connected to a tire valve is also attached to the tip of the pressure hose.

  An operation procedure for repairing a punctured tire using the pump-up device as described above will be described.

  When the puncture occurs, first, the operator screws the injection hose adapter onto the tire valve of the tire. In this state, the operator squeezes the liquid bottle to squeeze out the puncture sealing agent from the liquid bottle, and injects the puncture sealing agent into the tire through the injection hose. When the injection of a predetermined amount of the puncture sealing agent from the liquid bottle into the tire is completed, the liquid injection hose is removed from the tire valve.

  Next, the worker screws the adapter of the pressure hose on the tire valve, operates the air compressor to fill the tire with compressed air, and inflates the tire with a predetermined internal pressure. When this is done, remove the pressure hose from the tire valve and stop the air compressor. Immediately after this, pre-run for a certain distance with the tire injected with the sealing agent, spread the puncture sealing agent uniformly inside the tire, seal the puncture hole with the sealing agent, and then connect the pressure hose to the tire valve Then, the tire is pumped up again to the specified internal pressure by the air compressor.

  However, in the pump-up device as described above, after the injection hose is connected to the tire valve, a predetermined amount of sealing agent is injected from the liquid bottle into the tire through the injection hose, and then the injection hose is connected to the tire valve. The tire valve must be connected to a pressure hose and compressed air must be filled into the tire by an air compressor. For this reason, in this type of pump-up device, there is a problem that the replacement work of the liquid injection hose and the pressure hose connected to the tire valve is troublesome.

  On the other hand, Patent Literature 1 discloses a pump-up device that can eliminate the above-described hose replacement work. As shown in FIG. 5, the pump-up device 20 disclosed in Patent Document 1 includes a pressure-resistant container 4 that contains a sealing agent 6 and an air compressor 1 that is a supply source of compressed air. The air compressor 1 is connected to the gas introduction part 3 of the pressure vessel 4 through a hose 2. The gas introduction part 3 is a riser tube that can be closed by a stopper valve 5 and extends to the liquid level of the sealing agent 6 accommodated in the pressure resistant container 4. The pressure vessel 4 has an outlet valve 7 for discharging the puncture sealing agent 6. One end of a hose 8 is connected to the outlet valve 7, and a tire valve 10 is connected to the other end of the hose 8. A screw adapter 9 to be screwed to is attached.

In the pump-up device 20 as described above, when the tire is punctured, the adapter 9 is screwed to the tire valve 10, and then the gas introduction part 3 of the pressure vessel 4 is opened by the plug valve 5. In this state, the air compressor 1 is operated, and compressed air is introduced from the air compressor 1 into the pressure vessel 4 through the gas introduction unit 3. As a result, the internal pressure of the space portion on the sealing agent 6 in the pressure-resistant container 4 increases, and the sealing agent 6 is pushed out from the outlet valve 7 by the static pressure of the space portion, and the sealing agent 6 passes through the tire valve 10 into the tire. Injected. Thereafter, when the liquid level of the sealing agent 6 in the pressure resistant container 4 is lowered to the opening of the outlet valve 7, the compressed air in the pressure resistant container 4 is supplied into the tire through the outlet valve 7, and the tire is kept at a predetermined internal pressure. Inflate.
Japanese Patent No. 3210863

  However, in the pump-up device 20 shown in Patent Document 1, when the air compressor 1 is operated with the pressure vessel 4 tilted and the sealing agent 6 in the pressure vessel 4 is injected into the tire by air pressure, the pressure resistance is increased. Compressed air is started to be supplied into the tire while a considerable amount of the sealing agent 6 corresponding to the inclination remains in the container 4, and there is a possibility that a necessary amount of the sealing agent cannot be injected into the tire. As a result, if the required amount of sealing agent cannot be injected into the tire, the blockage of the puncture hole due to the sealing agent will be incomplete, the tire internal pressure will gradually decrease after repair, or the puncture will recur after running a certain distance There is a risk of malfunction.

  In view of the above facts, the object of the present invention is to provide a tire that can easily repair a punctured pneumatic tire and can reliably inject a necessary amount of a sealing agent into the pneumatic tire even when the device is tilted. May provide sealing and pump-up devices.

  The tire sealing / pump-up device according to claim 1 of the present invention injects a liquid sealing agent into a punctured pneumatic tire, and then supplies compressed air into the pneumatic tire to reduce the internal pressure of the pneumatic tire. A cylinder sealing / pump-up device for increasing the pressure, a discharge port communicating into the pneumatic tire and an air supply port for supplying compressed air into the container, respectively, and a cylinder container containing a sealing agent; An air chamber that is disposed in the cylinder container and is filled with a sealing agent that is discharged to the outside of the container through the discharge port, and an air chamber in which compressed air is supplied through the air supply port. And a plunger member that is movable in an injection direction that contracts the internal volume of the liquid chamber while expanding the internal volume of the air chamber. An air supply means for supplying compressed air into the air chamber portion through the air supply port, and moving the plunger member in the injection direction by the pressure of the compressed air; and a part of the inner wall surface of the liquid chamber portion as a container A bypass channel provided in the cylinder container so as to be recessed in a concave shape toward the outside, and the bypass channel is configured to discharge a predetermined amount of the sealing agent from the liquid chamber through the discharge port. When the plunger member moves in the injection direction, the air chamber portion communicates with the liquid chamber portion.

  In the tire sealing / pump-up device according to claim 1 of the present invention, first, if compressed air is supplied to the air chamber portion in the cylinder container by the air supply means through the air supply port, the plunger member is acted on by the action of the compressed air. Moves in the injection direction, expands the internal volume of the air chamber, and contracts the internal volume of the liquid chamber while pressurizing the sealing agent in the liquid chamber. As a result, the amount of sealing agent corresponding to the amount of expansion of the internal volume of the air chamber, that is, the amount of reduction of the internal volume of the liquid chamber is forced out of the discharge port by the action of air pressure. Since it is injected into the entering tire, an amount of the sealing agent corresponding to the reduction amount of the liquid chamber can be reliably injected into the inside of the pneumatic tire without being affected by the inclination of the cylinder container.

  In the sealing / pump-up device according to claim 1 of the present invention, when the plunger member moves in the injection direction until a predetermined amount of sealing agent is discharged from the liquid chamber through the discharge port as described above, Since the provided bypass flow path connects the air chamber portion to the liquid chamber portion, the air supply means communicates into the pneumatic tire through the air chamber portion, the bypass flow path, and the liquid chamber portion. After a fixed amount of sealing agent is discharged and injected into the interior of the pneumatic tire, the air supply means communicates with the interior of the pneumatic tire, and this air supply means can supply compressed air to the inside of the pneumatic tire. Compressed air is supplied to a pneumatic tire into which a fixed amount of sealing agent has been injected, and the pneumatic tire can be pumped up by this compressed air.

  Therefore, according to the sealing / pump-up device according to claim 1 of the present invention, after injecting the sealing agent into the interior of the pneumatic tire, the compressed air is supplied to the interior of the pneumatic tire. Therefore, it is not necessary to replace an air hose or the like in place of the sealing agent supply path, so that the work for repairing a punctured pneumatic tire can be easily performed.

  The sealing / pump-up device according to claim 2 of the present invention is the sealing / pump-up device according to claim 1, wherein the plunger member slides on the inner wall surface of the cylinder container in the bypass channel. It is characterized by extending from the surface to the opening end of the discharge port.

  A sealing / pump-up device according to claim 3 of the present invention is the sealing / pump-up device according to claim 1 or 2, wherein the cylinder container is formed so that the bypass channel faces the liquid chamber. The flow path forming portion is formed integrally.

  As described above, according to the tire sealing / pump-up device of the present invention, the repair work for the punctured pneumatic tire can be easily performed, and the required amount of sealing agent can be reliably inflated even when the device is tilted. Can be injected into tires.

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

(Configuration of sealing / pump-up device)
FIG. 1 shows a tire sealing / pump-up device (hereinafter simply referred to as “pump-up device”) according to an embodiment of the present invention. The pump-up device 30 repairs a tire with a sealing agent 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. The internal pressure is re-pressurized (pumped up) to a predetermined reference pressure.

  As shown in FIG. 1, the pump-up device 30 includes a casing 32 as an outer shell portion, and the casing 32 includes two partitioning plates 34 along the width direction (arrow W direction) of the device. It is divided into small chambers 36 and 38. In one small chamber 36, an air compressor 40 in which a motor, a pump, a power circuit, and the like are integrated is disposed. The air compressor 40 includes a power cable (not shown) connected to a power circuit, and a plug provided at the tip of the power cable is inserted into, for example, a cigarette lighter socket installed in the vehicle. Thus, power can be supplied to the air compressor 40 by a battery mounted on the vehicle.

  A resin cylinder container 42 formed in a substantially cylindrical shape is accommodated in the other small chamber 38, and this cylinder container 42 is placed in the height direction of the apparatus (arrow H). A substantially disc-shaped plunger member 48 is provided that divides the liquid chamber portion 44 and the air chamber portion 46, which are two compartments, along the direction). An insertion groove having a semicircular cross section is formed on the entire outer circumferential surface of the plunger member 48, and a seal ring 50 made of an elastic material such as silicone rubber is fitted into the insertion groove. . The seal ring 50 seals between the outer peripheral surface of the plunger member 48 and the inner peripheral surface of the cylinder container 42 by pressing the outer peripheral portion thereof against the inner peripheral surface of the cylinder container 42. The plunger member 48 is movable in the height direction in the cylinder container 42 while sliding the seal ring 50 on the inner peripheral surface of the cylinder container 42.

  The cylinder container 42 is filled with a sealing agent 52 in a liquid chamber portion 44 provided above the plunger member 48. Specifically, the liquid chamber portion 44 is filled with a slightly larger sealing agent 52 than a prescribed amount (for example, 200 g to 400 g) according to the type and size of the tire 90 to be repaired by the pump-up device 30. Has been. In a state in which a larger amount of the sealing agent 52 than the specified amount is filled in the liquid chamber portion 44, the plunger member 48 maximizes the internal volume of the liquid chamber portion 44 shown in FIG. The chamber 46 is held at the lower limit position that minimizes the internal volume. In the pump-up device 30, as the plunger member 48 at the lower limit position moves upward (in the injection direction), the internal volume of the liquid chamber portion 44 is continuously reduced and the internal volume of the air chamber portion 46 is continuously expanded. To do.

  As shown in FIG. 1 (A), a cylindrical upper neck 54 is integrally formed on the top plate portion of the cylinder container 42 so as to protrude upward, and on the outer peripheral side of the upper neck 54, A connection cap 58 provided at the base end of the joint hose 60 is screwed. An adapter 62 that can be screwed to the tire valve 92 of the tire 90 is disposed at the tip of the joint hose 60. By screwing the adapter 62 to the tire valve 92, the liquid chamber 44 communicates with the tire 90 through the joint hose 60.

A cylindrical lower neck 56 is integrally formed at the center of the bottom plate of the cylinder container 42 so as to protrude downward. The outer periphery of the lower neck 56 is provided at the tip of the pressure pipe 68. The connected connecting cap 70 is screwed. The base end portion of the pressure pipe 68 is connected to the air compressor 40. As a result, the air compressor 40 communicates with the inside of the air chamber portion 46 through the pressure pipe 68, and when the air compressor 40 is operated, the air (compressed air) generated by the air compressor 40 enters the air chamber portion 46 through the pressure pipe 68. Pumped. Here, the air compressor 40 can generate a pressure (for example, 3 kgf / cm ² or more) higher than a reference pressure defined for each type of the tire 90 to be repaired by the pump-up device 30.

  In the pump-up device 30, when compressed air is supplied into the air chamber portion 46 by the air compressor 40, the air pressure in the air chamber portion 46 rises, and the plunger member 48 that receives this air pressure becomes the static pressure of the sealing agent 52. Move gradually upward (injection direction). As a result, the internal volume of the air chamber portion 46 gradually expands, the internal volume of the liquid chamber portion 44 is reduced by an amount equal to the expansion amount of the air chamber portion 46, and the sealing agent 52 in the liquid chamber portion 44 is moved upward. It is pushed into the joint hose 60 through the space in the neck 54. The sealing agent 52 is injected into the tire 90 through the joint hose 60.

  As shown in FIG. 2, a flow path forming portion 64 is integrally formed in the upper end portion of the cylinder container 42 such that the inner wall surface of the cylinder container 42 is recessed toward the outer peripheral side. The flow path forming portion 64 is formed in a semi-cylindrical shape that opens toward the inner peripheral side (inside the cylinder container 42), and both end portions along the height direction are respectively closed by a semicircular bottom plate portion and a top plate portion. A bypass channel 66 having a semicircular cross section extending along the height direction is formed in the interior thereof. The bypass flow channel 66 extends from the intermediate portion of the liquid chamber portion 44 along the height direction to the top plate portion of the cylinder container 42, and the cross-sectional area along the radial direction is equal to the cross-sectional area of the joint hose 60. It is equal or slightly larger.

  In the pump-up device 30, as shown in FIG. 1B, the plunger member 48 minimizes the internal volume of the liquid chamber portion 44 and maximizes the internal volume of the air chamber portion 46 by the pressure of the compressed air. When moved to the vicinity of the upper limit position, the plunger member 48 reaches the bypass flow path 66, and the portion of the outer peripheral surface of the plunger member 48 facing the bypass flow path 66 is separated from the inner peripheral surface of the cylinder container 42. As a result, the air chamber 46 communicates with the liquid chamber 44 through the bypass flow channel 66, and compressed air generated by the air compressor 40 can be supplied from the air chamber 46 into the liquid chamber 44 through the bypass flow channel 66. become. At this time, most of the sealing agent 52 filled in the liquid chamber portion 44 is injected into the tire 90 through the joint hose 60.

  Therefore, in the pump-up device 30, when the plunger member 48 moves to the upper limit position, the compressed air generated by the air compressor 40 causes the pressure pipe 68, the air chamber portion 46, the bypass flow channel 66, the liquid chamber portion 44, and the joint hose 60 to move. The tire 90 is filled through. When the plunger member 48 moves to the upper limit position, a part of the small amount of the sealing agent 52 remaining in the liquid chamber portion 44 is pumped into the tire 90 together with the compressed air.

(Operation of sealing / pump-up device)
Next, an operation procedure for repairing the punctured tire 90 using the pump-up device 30 according to the present embodiment will be described.

  When puncture occurs in the tire 90, first, the operator moves the connection cap 58 of the joint hose 60 upward instead of the sealing cap (not shown) screwed to the upper neck 54 of the cylinder container 42. After screwing to the neck portion 54, the adapter 62 of the joint hose 60 is screwed to the tire valve 92, and the joint hose 60 is connected to the cylinder container 42 and the tire 90, respectively.

  Next, the operator operates the air compressor 40 and supplies the compressed air generated by the air compressor 40 through the pressure pipe 68 into the air chamber 46 of the cylinder container 42. As a result, the internal pressure of the air chamber 46 gradually increases, and as the internal pressure increases, the plunger member 48 located at the lower limit position moves in the injection direction to expand the internal volume of the air chamber 46 and the liquid chamber The internal volume of 44 is reduced. At this time, an amount of the sealing agent 52 substantially equal to the amount of reduction in the internal volume is forced out of the liquid chamber 44 through the upper neck 54 and into the joint hose 60, and the pressurized sealing state is reached. The agent 52 is injected into the tire 90 through the joint hose 60.

  As shown in FIG. 1 (B), when the plunger member 48 moves to the vicinity of the upper limit position and the discharge of a predetermined amount of the sealing agent from the inside of the cylinder container 42 is completed, the air chamber portion 46 passes through the bypass channel 66 and the liquid chamber portion 46 44. As a result, the compressed air sent from the air compressor 40 into the air chamber 46 is supplied to the inside of the tire 90 through the liquid chamber 44, the bypass passage 66 and the joint hose 60. Thereafter, when the operator confirms that the internal pressure of the tire 90 has become the specified pressure by a pressure gauge (not shown) provided in the air compressor 40, the operator stops the air compressor 40 and connects the adapter 62 to the tire valve. Remove from 92.

  The worker travels preliminarily for a certain distance using the tire 90 into which the sealing agent 52 has been injected within a certain time after the completion of the inflation of the tire 90. As a result, the sealing agent 52 is uniformly diffused inside the tire 90, and the sealing agent 52 is filled in the puncture hole to close the puncture hole. After the preliminary travel is completed, the operator re-measures the internal pressure of the tire 90, screwes the adapter 62 of the joint hose 60 to the tire valve 92 again as necessary, operates the air compressor 40, and defines the tire 90 as specified. Pressurize to internal pressure. Thereby, the puncture repair of the tire 90 is completed, and the tire 90 can be used to travel at a certain speed or less within a certain distance range.

  In the pump-up device 30 according to the embodiment of the present invention described above, first, if compressed air is supplied to the air chamber portion 46 in the cylinder container 42 by the air compressor 40 through the lower neck portion 56, the pressure of the compressed air is used. The plunger member 48 at the lower limit position moves in the injection direction, expands the internal volume of the air chamber portion 46, and contracts the internal volume of the liquid chamber portion 44 while pressurizing the sealing agent 52 in the liquid chamber portion 44. As a result, the amount of the sealing agent 52 corresponding to the amount of expansion of the internal volume of the air chamber 46, that is, the amount of reduction of the internal volume of the liquid chamber 44 is forcibly pushed out from the upper neck 54 by the air pressure. Is injected into the tire 90 through the joint hose 60, so that the amount of the sealing agent 52 corresponding to the amount of reduction of the liquid chamber portion 44 is surely introduced into the tire 90 without being affected by the inclination of the cylinder container 42. Can be injected into.

  Further, in the pump-up device 30, when the plunger member 48 moves to the upper limit position in the cylinder container 42, the bypass channel 66 formed in the cylinder container 42 causes the air chamber portion 46 to communicate with the liquid chamber portion 44. Since the compressor 40 communicates with the inside of the tire 90 through the air chamber portion 46, the bypass channel 66, the liquid chamber portion 44, and the joint hose 60, a predetermined amount of the sealing agent 52 is discharged from the inside of the liquid chamber portion 44 and the inside of the tire 90. The air compressor 40 is communicated with the inside of the tire 90, and compressed air can be supplied to the inside of the tire 90 by the air compressor 40. The compressed air is supplied to the tire 90 into which a predetermined amount of the sealing agent 52 has been injected. The tire 90 can be pumped up to a specified pressure by supplying the compressed air.

Therefore, according to the pump-up device 30 of the present embodiment, the sealing hose 52 is injected into the inside of the tire 90 and then the compressed air is supplied to the inside of the tire 90. Therefore, it is possible to easily repair the tire 90.
[Modification of Embodiment]
(Modification 1)
FIG. 3 shows a modification 1 of the cylinder container in the pump-up device according to the embodiment of the present invention.

  As shown in FIG. 3, the cylinder container 72 according to the first modification is integrally formed with a flow path forming portion 64 in which a bypass flow path 66 is formed inside, similarly to the cylinder container 42 shown in FIG. In addition, an auxiliary flow path forming portion 74 is formed on the top plate portion so as to be continuous with the flow path forming portion 64. Similarly to the flow path forming portion 64, the auxiliary flow path forming portion 74 is also formed in a semi-cylindrical shape that opens downward (inside the cylinder container 72), and the inside thereof extends along the radial direction. An auxiliary bypass passage 76 having a semicircular cross section is formed. The auxiliary bypass channel 76 has an outer peripheral end connected to the upper end of the bypass channel 66 and an inner peripheral end connected to the space in the upper neck 54. The cross-sectional area of the auxiliary bypass channel 76 is equal to or slightly larger than the cross-sectional area of the joint hose 60, similarly to the bypass channel 66.

  In the cylinder container 42 shown in FIG. 2, when the plunger member 48 rises to a position where it comes into contact with the top plate portion of the cylinder container 42 due to air pressure, the plunger member 48 closes the space between the air chamber portion 46 and the space in the upper neck portion 54. The compressed air may not be supplied from the air chamber 46 to the space in the upper neck 54. For this reason, in the cylinder container 42, for example, a stopper or the like needs to be provided to limit the rise of the plunger member 48 so that the plunger member 48 does not contact the top plate portion. However, if the upper limit position of the plunger member 48 is set below the cylinder container 42, a considerable amount of sealing agent remains in the liquid chamber portion 44 even when the plunger member 48 moves to the upper limit position. A part of the remaining sealing agent 52 is fed into the tire 90 together with the compressed air. However, it is difficult to feed all the remaining sealing agent 52 into the tire 90, and the liquid chamber portion 44 is filled. A part of the sealing agent 52 is wasted.

  On the other hand, in the cylinder container 72 shown in FIG. 3, even if the plunger member 48 rises to a position where it comes into contact with the top plate portion of the cylinder container 42 due to air pressure, Therefore, the compressed air supplied into the air chamber 46 by the air compressor 40 passes through the auxiliary bypass flow path 76, the space in the upper neck 54, and the joint hose 60 to the inside of the tire 90. To be filled. As a result, in the cylinder container 42 shown in FIG. 3, the upper limit position of the plunger member 48 can be set to a position in contact with the top plate portion, so that the liquid chamber portion 44 is moved with the plunger member 48 moved to the upper limit position. The sealant 52 hardly remains in the interior, or the remaining amount of the sealant 52 can be made sufficiently small.

(Modification 2)
FIG. 4 shows a modification 2 of the cylinder container and the plunger member in the pump-up device according to the embodiment of the present invention.

  As shown in FIG. 4, the cylinder container 78 according to the modified example 2 is provided with a non-circular cylindrical portion 80 having a non-circular cross-sectional shape along the radial direction on the lower side thereof. The cylindrical portion 80 is formed with a flat portion 82 that is flat along the chord direction at one end portion along the radial direction on the inner peripheral surface thereof. Further, the cylinder container 78 is provided with a cylindrical portion 86 having a circular cross section on the upper side of the non-circular cylindrical portion 80, and the cylindrical portion 86 projects to the outer peripheral side with respect to the non-circular cylindrical portion 80. A flow path forming portion 84 is integrally formed. A bypass channel 85 having a substantially crescent-shaped cross section is formed inside the channel forming portion 84, and the bypass channel 85 extends from the intermediate portion of the liquid chamber portion 44 along the height direction to the cylinder container. It extends to 42 top plate portions. Here, the cross-sectional area of the bypass flow path 85 is equal to or slightly larger than the cross-sectional area of the joint hose 60, as in the case of the bypass flow path 66 shown in FIG.

  A plate-like plunger member 48 is disposed in the cylinder container 78, and the plunger member 48 corresponds to a flat portion 82 on the inner peripheral surface of the cylinder container 78 at one end portion along the radial direction thereof. A straight line portion 88 is formed along the chord direction. Thus, in the pump-up device 30 to which the cylinder container 78 is applied, when the plunger member 48 moves to the upper limit position set above the lower end of the bypass flow channel 66 due to the air pressure in the air chamber portion 46, the air chamber The portion 46 communicates with the liquid chamber portion 44 through the bypass passage 85, and the compressed air supplied into the air chamber portion 46 can be supplied into the tire 90 through the bypass passage 85, the liquid chamber portion 44 and the joint hose 60. .

  In the cylinder container 42 shown in FIG. 2, the flow path forming portion 64 protrudes toward the outer peripheral side. For this reason, when the cylinder container 42 is stored in a storage case or the like separately from the main body side of the pump-up device 30, it is conceivable that the storage performance of the cylinder container 42 is impaired by the flow path forming unit 64. On the other hand, in the cylinder container 78 shown in FIG. 4, since the cylindrical part 86 provided with the flow path forming part 84 in the cylinder container 78 is circular in cross section, the storage property is good and the small storage space is efficient. Can be stored. In addition, the cylinder container 78 according to the modification 2 is also provided with the auxiliary bypass flow path 76 that connects the bypass flow path 85 and the space in the upper neck portion 54 to the top plate portion, similarly to the cylinder container 72 according to the modification 1. Anyway.

  In the pump-up device 30 according to the present embodiment described above, the flow path forming portions 64 and 84 or the auxiliary flow path forming portion 74 are integrally formed with the cylinder containers 42, 72 and 78. Thereby, in order to provide the bypass passages 66, 86 or the auxiliary bypass passage 76 in the cylinder containers 42, 72, 78, it is not necessary to attach parts such as pipes and hoses to the cylinder containers 42, 72, 78. Since the number of components and the number of assembly steps can be reduced, the manufacturing cost of the apparatus can be reduced. The cylinder containers 42, 72, and 78 can be integrally formed by, for example, blow molding. The cylinder containers 42, 72, and 78 are, for example, a bottomed cylindrical container body portion and the cylinder container 42. , 72, 78, and the lid portion divided from one end along the height direction, the plunger member 48 is housed in the container body, and the lid is joined to the container body. .

  2 is formed with one flow path forming portion 64, thereby forming one bypass flow path 66 through which compressed air flows after the completion of the injection of the sealing agent 52. However, if the cross-sectional area of the single bypass flow channel 66 cannot be made sufficiently larger than the cross-sectional area of the flow channel through which the compressed air in the pressure pipe 68 circulates, a plurality of cylinder containers 42 are provided in the cylinder container 42. The flow path forming portion 64 is formed, and after the injection of the sealing agent 53 is completed, the compressed air is supplied into the tire 90 through a plurality of bypass flow paths 66 formed inside the plurality of flow path forming portions 64, respectively. Anyway.

  That is, after the injection of the sealing agent 52 is completed, the high-viscosity sealing agent 52 adheres to the bypass channel 66, and the substantial cross-sectional area of the bypass channel 66 is remarkably reduced. As a result, the compressed air supply speed may be reduced. In order to prevent such a decrease in the supply rate of compressed air, the sum of the cross-sectional areas of the bypass flow channel 66 is made sufficiently larger than the cross-sectional area of the flow channel through which the compressed air flows in the pressure pipe 68. It is effective.

  For the same reason as the case of the cylinder container 42 described above, a plurality of flow path forming portions 66 and auxiliary flow path forming portions 74 are also formed in the cylinder container 72 shown in FIG. The cross-sectional area of the flow path 76 may be increased, and the cross-sectional area of the bypass flow path 85 may be increased by forming a plurality of flow path forming portions 84 in the cylinder container 78 shown in FIG. .

  Further, the cylinder containers 42, 72, 78 according to the present embodiment may be formed using a light transmissive material such as a colorless and transparent resin material as a raw material. If the cylinder containers 42, 72, 78 are formed of the light transmitting material in this way, the operator can visually recognize the remaining amount of the sealing agent 52 remaining in the cylinder containers 42, 72, 78. The progress of puncture repair can be easily determined.

It is side surface sectional drawing which shows the structure of the sealing pump-up apparatus which concerns on embodiment of this invention, (A) shows the state before sealing agent injection | pouring to a tire, (B) after completion of sealing agent injection | pouring to a tire Shows the state. It is a perspective view which shows the structure of the cylinder container in the sealing and pump-up apparatus shown by FIG. It is a perspective view which shows the modification 1 of the cylinder container applicable to the sealing pump-up apparatus shown by FIG. It is a perspective view which shows the modification 2 of the cylinder container applicable to the sealing pump-up apparatus shown by FIG. It is a block diagram which shows an example of the conventional sealing and pump-up apparatus.

Explanation of symbols

30 Pump-up device 40 Air compressor (air supply means)
42 Cylinder container 44 Liquid chamber portion 46 Air chamber portion 48 Plunger member 52 Sealing agent 54 Upper neck portion (discharge port)
56 Lower neck (air supply port)
60 Joint hose 64 Flow path forming part 66 Bypass flow path 68 Pressure piping 72 Cylinder container 74 Auxiliary flow path forming part 76 Auxiliary bypass flow path 78 Cylinder container 84 Flow path forming part 85 Bypass flow path 90 Tire (pneumatic tire)

Claims (3)

A tire sealing and pumping device for injecting a liquid sealing agent into a punctured pneumatic tire and then supplying compressed air into the pneumatic tire to increase the internal pressure of the pneumatic tire,
A cylinder container containing a sealing agent, each provided with a discharge port communicating with the pneumatic tire and an air supply port for supplying compressed air into the container;
An air chamber that is disposed in the cylinder container and is filled with a sealing agent that is discharged to the outside of the container through the discharge port, and an air chamber in which compressed air is supplied through the air supply port. And a plunger member that is movable in the injection direction to contract the internal volume of the liquid chamber while expanding the internal volume of the air chamber,
Air supply means for supplying compressed air into the air chamber through the air supply port and moving the plunger member in the injection direction by the pressure of the compressed air;
A bypass channel provided in the cylinder container so that a part of the inner wall surface of the liquid chamber portion is recessed toward the outside of the container,
When the plunger member moves in the injection direction until a predetermined amount of the sealing agent is discharged from the liquid chamber through the discharge port, the bypass channel communicates the air chamber with the liquid chamber. Characteristic sealing and pump-up device.   2. The sealing / pump-up device according to claim 1, wherein the bypass channel extends from a sliding surface on the inner wall surface of the cylinder container where the plunger member slides to an opening end of the discharge port. . The sealing / pump-up device according to claim 1 or 2, wherein a flow path forming part for forming the bypass flow path so as to face the liquid chamber part is integrally formed in the cylinder container.

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