JP2010167742A - Sealing pump-up apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sealing pump-up apparatus to prevent the unsealing of a container holding a sealant when connecting condition is defective in a joint section. <P>SOLUTION: Unsealing of an aluminum seal 30 of a liquid container 18 can be prevented when connecting condition is defective in the joint section by installing the followings to a sealing apparatus 10: the liquid container 18 holding a sealant 32 and a discharge path 94 sealed off with the aluminum seal 30, an infusion unit 20 having a pressurizing liquid feeding chamber 40 which communicates with the liquid container 18 through the discharge path 94 when the aluminum seal 30 is torn while connecting the liquid container 18, a compressor unit 12 for generating compressed air, an air hose 170 for feeding the compressed air to the pressurizing liquid feeding chamber 40, a joint hose 78 for connecting the infusion unit 20 with a tire 100 and a boring member 82 arranged closer than the aluminum seal 30 to the outlet side of discharge path 94 which migrates to the aluminum seal 30 side and bursts it through according to a pressure rise in a passage course. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention provides a sealing agent for sealing a puncture hole of a punctured pneumatic tire into the pneumatic tire, and supplying compressed air into the pneumatic tire to increase the internal pressure of the pneumatic tire. The present invention relates to a pump-up device.

  In recent years, when a pneumatic tire (hereinafter simply referred to as “tire”) is punctured, the tire puncture hole is repaired with a sealing agent without replacing the tire and wheel, and the tire internal pressure is pumped to a specified pressure. Sealing / pump-up devices are widely used.

  As this type of sealing / pump-up device, a sealing device described in Patent Document 1 is known. In Patent Document 1, when a tire is punctured, an operator first connects a union nut provided at a free end of a filling hose connected to a sealant extraction unit to a tire valve. Next, the storage container (container) storing the sealant is connected (screwed) to the sealant extraction unit, and the aluminum foil (sealing member) that closes the opening of the storage container is attached to the chamfered part of the sealant extraction unit. Break through. Then, the gas supply source is operated to supply the gas into the storage container, the sealant in the storage container is pushed out by the gas pressure, and the sealant is supplied into the tire through the sealant extraction unit and the filling hose. It has become.

JP 2007-176181 A

  By the way, in patent document 1, since a user connects a storage container and a sealing agent extraction unit and connects a union nut and a tire valve, these connections may be insufficient. However, in the structure of Cited Document 1, when the storage container and the sealant extraction unit are screwed (connected) to some extent, the aluminum foil of the storage container is broken, and thus gas is supplied to the storage container in this insufficient connection state. In this case, the sealing agent may leak out from the connection part.

  In view of the above facts, an object of the present invention is to provide a sealing / pump-up device that prevents the container containing the sealing agent from being opened when the connection state of the connection portion is incomplete.

  The sealing / pump-up device according to claim 1 contains a sealing agent, and a container in which an outflow path of the sealing agent is sealed with a sealing member, the container is connectable, and the container is connected. An injection unit having a liquid supply chamber communicating with the container via the outflow passage when the sealing member is broken in a state, and a compressed air supply for generating compressed air and supplying the compressed air to the liquid supply chamber Means, a fluid supply pipe that connects the injection unit and the pneumatic tire, guides the compressed air and the sealing agent that has flowed out to the liquid supply chamber through the outflow passage, and the sealing member rather than the sealing member. A perforating member that is disposed on the outlet side of the outflow passage and moves to the sealing member side in response to an increase in pressure in the passage path of the compressed air to break the sealing member.

  In the sealing and pump-up device according to the first aspect, first, the container is connected to the injection unit, and the injection unit and the pneumatic tire are connected by the fluid supply pipe. When compressed air is supplied from the compressed air supply means to the liquid supply chamber in this state, the compressed air is supplied into the pneumatic tire through the fluid supply pipe, and the pressure (internal pressure) in the compressed air passage is increased. When the pressure in the passage path of the compressed air exceeds a predetermined value, the piercing member provided on the outlet side of the outflow passage is pushed out (moved) to the sealing member side and breaks the sealing member. . Compressed air flows into the container whose sealing member has been broken through the outflow passage, and the sealing agent in the container is pushed out to the liquid supply chamber through the outflow passage by the inflowing compressed air. The extruded sealing agent and compressed air are guided to the fluid supply pipe and supplied to the pneumatic tire.

  In addition, a sealing agent and compressed air are supplied to the punctured pneumatic tire, and after that, the sealing agent is filled in the puncture hole by traveling a specified distance, and the puncture hole is closed. After running, check the air pressure of the pneumatic tire and resupply compressed air if necessary. By doing in this way, the puncture repair work of a pneumatic tire can be implemented and completed.

  Here, in the case where the connection portion such as the connection portion between the container and the injection unit and the connection portion between the tire and the injection unit is in an incomplete connection state, the incompleteness may occur when the pressure in the passage of compressed air increases. Since air leaks from the connection location, the pressure in the passage does not increase. For this reason, the piercing member is not pushed out to the sealing member side, and the sealing of the container is not opened (broken). That is, when the connection state of the connection portion is incomplete, it is possible to prevent the container from being opened. Thereby, it is possible to prevent the sealing agent from leaking out from the incomplete connection portion.

  In the sealing / pump-up device according to a second aspect of the present invention, a sealing member is provided on the outer peripheral surface of the piercing member to seal the space between the outer peripheral surface and the inner peripheral surface of the outflow passage.

  In the sealing / pump-up device according to claim 2, since the seal member seals between the outer peripheral surface of the piercing member and the inner peripheral surface of the outflow passage, the piercing member can effectively receive the pressure in the passage path. .

  As described above, the sealing / pump-up device of the present invention can prevent the container from being opened when the connection state of the connection portion is incomplete.

It is a schematic block diagram which shows the state which connected the sealing pump-up apparatus and pneumatic tire of 1st Embodiment. (A) It is a fragmentary sectional side view which shows the state before mounting | wearing the injection | pouring unit with the liquid agent container of 1st Embodiment. (B) It is an expanded sectional view which shows the outflow path of a liquid agent container. The fragmentary sectional side view which shows the state after mounting | wearing the injection unit with the liquid agent container of 1st Embodiment. It is a fragmentary sectional side view which shows the state from which the sealing agent is sent to a tire from the liquid agent container of 1st Embodiment. (A) It is a block diagram which shows the state which the electromagnetic valve of 2nd Embodiment has made the flow path of air into the 2nd air hose. (B) It is a block diagram which shows the state which the electromagnetic valve of 2nd Embodiment makes the flow path of air the 1st air hose.

[First Embodiment]
Hereinafter, a first embodiment of the sealing / pump-up device of the present invention will be described.
The sealing / pump-up device 10 (hereinafter simply referred to as “sealing device”) replaces tires and wheels when a pneumatic tire (hereinafter simply referred to as “tire”) mounted on a vehicle such as an automobile punctures. This is a device for repairing a puncture hole of a tire with a sealing agent and repressurizing (pumping up) the internal pressure of the tire to a specified pressure. FIG. 1 shows a state where the sealing device 10 and the tire 100 are connected.

  As shown in FIGS. 1 and 3, the sealing device 10 contains a box-shaped casing 11, a compressor unit 12 that is contained in the casing 11 and generates compressed air, and a sealing agent 32 for repairing tire puncture holes. The liquid container 18 (an example of the container), the injection unit 20 to which the neck portion 26 of the liquid container 18 is connected, the air hose 170 connecting the injection unit 20 and the compressor unit 12, the injection unit 20 and the tire 100. And a joint hose 78 to be connected. In the sealing device 10 of the present embodiment, the liquid agent container 18, the injection unit 20, and the casing 11 (including the compressor unit 12) are separately stored. When the sealing device 10 is used, FIG. As shown, each member is connected to each other.

  As shown in FIG. 1, a compressor unit 12 is fixed inside the casing 11. A manual (not shown) is attached to the upper surface 11U of the casing 11 in which the operating procedure of the sealing device 10 and precautions for use are described. Further, a power switch 158 of the compressor unit 12 and a pressure gauge 159 for measuring the pressure of compressed air generated by the compressor unit 12 are provided on the upper surface 11U.

  The compressor unit 12 includes an air compressor (not shown), a drive motor for the air compressor, a drive circuit for the drive motor, and the like. The compressor unit 12 includes a power cable 14 that extends to the outside of the casing 11, and a plug 15 that can be inserted into a socket of a cigarette lighter installed in the vehicle is provided at the tip of the power cable 14. It has been. By inserting the plug 15 into the socket of the cigarette lighter, power can be supplied from the battery mounted on the vehicle to the drive circuit. When the power switch 158 described above is turned on, power is supplied to the drive circuit. The compressor unit 12 is set so as to be able to generate compressed air having a pressure (for example, 300 kPa or more) higher than a specified pressure defined for each type of tire 100 to be repaired.

  The compressed air generated by the air compressor is supplied to the pressurized liquid supply chamber 40 (see FIG. 3) of the injection unit 20 through an air hose 170 connected to an exhaust pipe (not shown) of the compressor unit 12. It has come to be.

(Liquid container)
As shown in FIG. 2 (A), the liquid agent container 18 accommodates the sealing agent 32 therein, so that the lower end portion becomes a cylindrical portion (neck portion 26) having a smaller diameter than the container main body portion on the upper end side. Molded. The opening at the tip of the neck 26 (the lower end in FIG. 2A) is an outlet 29 through which the sealing agent 32 flows out from the liquid container 18, and the inside is an outflow path 94 for the sealing agent 32. The outflow passage 94 is provided with a film-like aluminum seal 30 (an example of a sealing member) on the back side, and is closed (sealed). The outer peripheral edge of the aluminum seal 30 is fixed to the inner peripheral surface of the outflow passage 94 over the entire circumference.

  A stepped portion 28 is formed in the middle portion of the neck portion 26 so as to extend to the outer peripheral side. Further, a male screw 200 is formed on the outer peripheral surface between the tip of the neck portion 26 and the intermediate portion.

  Further, as shown in FIG. 2B, a cylindrical perforation is provided on the outlet side (outlet 29 side) of the outflow passage 94 from the aluminum seal 30 so that the outer peripheral surface is in pressure contact with the inner peripheral surface of the neck portion 26. A member 82 is disposed. A pair of upper and lower fitting insertion grooves are provided on the outer peripheral surface of the piercing member 82, and O-rings 92 are fitted into the fitting insertion grooves, respectively. Since the radially outer end of the O-ring 92 is in pressure contact with the inner peripheral surface of the outflow passage 94, the piercing member 82 cannot be moved unless a certain external force (for example, 150 kpa to 200 kpa) is applied. It has become. Further, a plurality of protrusions 84 are erected along the peripheral edge at the end of the perforated member 82 on the aluminum seal 30 side, and the tips of the protrusions 84 have a shape that can easily break through the aluminum seal 30.

  The liquid container 18 is formed from various resin materials having gas barrier properties and metal materials such as an aluminum alloy, and the type of the tire 100 (see FIG. 1) to be repaired by the sealing device 10 inside. A larger amount of sealing agent 32 than a prescribed amount (for example, 200 g to 800 g) corresponding to the size or the like is accommodated.

(Injection unit)
As shown in FIG. 2 (A), the injection unit 20 includes a unit main body 34 formed in a substantially bottomed cylindrical shape having an upper end opened, and a circle projecting from the lower end of the unit main body 34 to the outer peripheral side. And plate-like legs 36. A female screw 210 into which the male screw 200 of the neck portion 26 of the liquid container 18 is screwed is formed on the inner periphery on the upper end side of the unit main body 34. The liquid container 18 and the injection unit 20 are connected by screwing the female screw 210 to the male screw 200.

Here, as shown in FIG. 3, the pressurized liquid supply chamber is provided between the inner wall surface of the unit main body 34 and the perforated member 82 by screwing the male screw 200 of the neck 26 with the female screw 210 of the unit main body 34. 40 is formed. The pressurized liquid supply chamber 40 communicates with the inside of the liquid container 18 when the aluminum seal 30 is broken by a piercing member 82 described later. That is, when the aluminum seal 30 is broken and the outflow path 94 is opened, the sealing agent 32 flowing out from the outflow path 94 flows into the pressurized liquid supply chamber 40.
An annular rubber packing 85 is disposed on the inner periphery on the upper end side of the injection unit 20. When the male screw 200 is screwed into the female screw 210, the lower end portion of the liquid container 18 bites into the rubber packing 85. ing. When the lower end portion of the liquid agent container 18 (the lower end portion of the neck portion 26) is bitten into the rubber packing 85, the connection portion between the injection unit 20 and the liquid agent container 18 is sealed.

  A substantially cylindrical inner cylindrical portion 42 is formed coaxially on the inner peripheral side of the unit main body 34. The internal space of the inner peripheral cylinder part 42 extends to the lower part of the injection unit 20 along the central axis.

  The unit main body 34 is formed with a cylindrical air supply pipe 52 that extends to the outer peripheral side of the unit main body 34. The tip of the air supply pipe 52 is connected to the tip of the air hose 170 via a check valve and a nipple 54 (not shown). Further, the inside of the air supply pipe 52 communicates with the internal space of the inner peripheral cylinder portion 42.

  Further, a cylindrical gas-liquid supply pipe 74 that extends to the outer peripheral side so as to be opposite to the air supply pipe 52 is integrally formed on the peripheral wall portion of the unit main body 34. The gas-liquid supply pipe 74 has an inside communicating with the pressurized liquid supply chamber 40, and a tip portion connected to a joint hose 78 via a nipple 76. A valve adapter 80 that can be connected to the tire valve 102 of the tire 100 is provided at the tip of the joint hose 78.

  When the sealing device 10 is used, the valve adapter 80 is connected to the tire valve 102 of the tire 100 to allow communication between the joint hose 78 and the tire 100. Here, in a state where the valve adapter 80 is connected to the tire valve 102, the internal spaces of the pressurized liquid supply chamber 40, the gas-liquid supply pipe 74, the joint hose 78, the valve adapter 80, the tire valve 102, and the tire 100 are The sealing agent 32 that has been communicated and has flowed into the pressurized liquid supply chamber 40 can be guided to the tire 100 via the gas-liquid supply pipe 74, the joint hose 78, and the valve adapter 80.

  In the present embodiment, when the upright state shown in FIGS. 1 to 4 (the liquid container 18 is up and the injection unit 20 is down), the sealing agent 32 in the liquid container 18 is under its own weight, and the liquid container 18 The aluminum seal 30 is in a pressurized state.

(Operation of sealing / pump-up device)
Next, an operation procedure for repairing the punctured tire 100 using the sealing device 10 of the present embodiment will be described.

  First, when the tire 100 is punctured, the user removes the casing 11 from the storage space of the vehicle and places it on an installation surface (for example, a road surface) such that the power switch 158 or the pressure gauge 159 faces upward. Work is performed while sequentially checking the manual of the upper surface 11U.

  Next, the user takes out the liquid container 18 and the injection unit 20 stored separately from the casing 11, and first places the injection unit 20 on the installation surface with the legs 36 of the injection unit 20 facing down. The male screw 200 of the liquid container 18 is screwed into the female screw 210 of the injection unit 20 in a state of being directed toward the inner side, and these are connected.

  Next, the valve adapter 80 of the joint hose 78 connected to the gas-liquid supply pipe 74 of the injection unit 20 is connected to the tire valve 102 of the tire 100 (see FIG. 1). Thereby, a fluid supply path is formed, and the pressurized liquid supply chamber 40 and the inside of the tire 100 communicate with each other through the fluid supply path. Next, the tip of the air hose 170 is connected to the air supply pipe 52 using the nipple 76.

  Next, the user inserts the plug 15 of the power cable 14 into a socket (not shown) of a cigarette lighter installed in the vehicle and starts the vehicle engine. Thereby, electric power can be supplied from the vehicle battery (DC 12 V) to the drive circuit of the compressor unit 12.

  When the power switch 158 is turned on, compressed air is supplied from the compressor unit 12 and the pressure in the compressed air passage from the compressor unit 12 to the tire 100 increases. When this pressure reaches a predetermined value (for example, 150 kpa to 200 kpa), the piercing member 82 that is in pressure contact with the inner peripheral surface of the outflow passage 94 is pushed out toward the aluminum seal 30 side. When the aluminum seal 30 is pierced by the protrusion 84 of the piercing member 82, the sealing agent 32 in the liquid agent container 18 flows out to the pressurized liquid supply chamber 40 through the hole 31 formed in the aluminum seal 30. At this time, the compressed air in the passage route enters the liquid agent container 18 and floats above the liquid agent container 18 to form a space (air layer G) on the sealing agent 32 in the liquid agent container 18 ( (See FIG. 4). For this reason, the sealing agent 32 is pushed out to the pressurized liquid supply chamber 40 by its own weight and the air pressure from the air layer G. The sealing agent 32 that has flowed into the pressurized liquid supply chamber 40 is sent (supplied) to the tire 100 through the joint hose 78 by the air pressure from the air layer G. Thereafter, when all the sealing agent 32 is supplied to the tire 100 from the pressurized liquid supply chamber 40 and the fluid supply path, the compressed air is supplied to the tire via the liquid agent container 18, the pressurized liquid supply chamber 40, and the fluid supply path. It is injected (supplied) into 100.

  Next, when it is confirmed by the pressure gauge 159 that the internal pressure of the tire 100 has become the specified pressure, the user stops the compressor unit 12 and removes the valve adapter 80 from the tire valve 102.

  The user travels preliminarily for a certain distance (for example, 10 km) using the tire 100 into which the sealing agent 32 has been injected within a certain time after the completion of the inflation of the tire 100. As a result, the sealing agent 32 is uniformly diffused inside the tire 100, and the sealing agent 32 is filled in the puncture hole, thereby closing the puncture hole.

  After the preliminary run is completed, the user re-measures the internal pressure of the tire 100, reconnects the valve adapter 80 of the joint hose 78 to the tire valve 102 as necessary, and restarts the compressor unit 12 to define the tire 100. Pressurize to internal pressure. Thereby, the puncture repair of the tire 100 is completed, and the tire 100 can be used to travel at a certain speed or less (for example, 80 km / h or less) within a certain distance range.

  According to the sealing device 10 of the present embodiment, the connection portion (the male screw 200 and the female screw 210) between the liquid agent container 18 and the injection unit 20, and the connection portion between the tire 100 and the injection unit 20 (the valve adapter 80 and the tire valve 102). When the connection location is incompletely connected, the air leaks from the incomplete connection location when the pressure in the compressed air passage increases, so the pressure in the passage does not increase. Therefore, the piercing member 82 is not pushed out to the aluminum seal side, and the aluminum seal 30 of the liquid container 18 is not broken. That is, when the connection state of the connection location is incomplete, the aluminum seal 30 of the liquid agent container 18 can be prevented from being pierced by the piercing member 82. Thereby, it can suppress that the sealing agent 32 leaks from the incomplete connection location.

  In addition, even if the connection state of the connection portion is complete, if the pressure in the compressed air passage does not rise to a predetermined value, a puncture hole having a size that cannot be repaired with the sealing agent 32 is formed in the tire 100. The user can recognize that there is a possibility. Thereby, it is not necessary to use the sealing agent 32 wastefully for puncture holes that cannot be repaired by the sealing agent 32.

  Furthermore, since the O-ring 92 seals between the outer peripheral surface of the piercing member 82 and the inner peripheral surface of the outflow passage 94, the piercing member 82 can effectively receive the pressure in the passage path of the compressed air.

  According to the configuration of the sealing device 10, the aluminum seal 30 is not pierced when there is an unacceptable range of air leakage at the connection location on the compressed air passage (from the compressor unit 12 to the tire 100). However, for example, when a perforated member is arranged inside the inner peripheral cylindrical portion 42 of the injection unit 20 and the perforated member is pushed out by the pressure of compressed air to break through the aluminum seal, from the compressor unit, Since only air leakage up to the position where the piercing member is arranged can be dealt with, even if there is an incomplete connection in the subsequent area, it cannot be dealt with. For this reason, it is preferable to set it as the structure of the sealing apparatus 10 which can cope with all the connection locations on the passage route of compressed air.

[Second Embodiment]
Next, a second embodiment of the sealing / pump-up device will be described. In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  As shown in FIGS. 5 (A) and 5 (B), in the sealing device 180 of this embodiment, an electromagnetic valve 120 is provided in the middle of the air hose 170, and the air (air) flow path is connected to the injection unit 20 as shown in FIGS. The first air hose 170A is connected to the joint hose 78, and the second air hose 170B is connected to the joint hose 78 on the way. The second air hose 170B is provided with a pressure sensor 96 for measuring air pressure. The pressure sensor 96 detects the pressure in the second air hose 170B, and the detected value exceeds a preset value. In this case, a switching signal for switching the air flow path from the second air hose 170B to the first air hose 170A is sent to the electromagnetic valve 120. Then, after the solenoid valve 120 receives the switching signal and switches the air flow path to the first air hose 170 </ b> A, the pressure in the passage path of the compressed air rises and the piercing member 82 breaks through the aluminum seal 30.

  Here, in the sealing device 180, since the air hose is switched using the electromagnetic valve 120, when the connection between the tire valve 102 and the valve adapter 80 is incomplete, the pressure in the passage route does not increase, and the tire The user can quickly determine that the connection state between the valve 102 and the valve adapter 80 is incomplete.

[Other embodiments]
In the above-described embodiment, the liquid agent container 18 and the injection unit 20 are stored separately and connected to each other when the apparatus is used to form a connected body. However, the present invention is not limited to this configuration. The container 18 and the injection unit 20 may be stored in a connected state in advance.

  In the above-described embodiment, the perforation member 82 does not move to the aluminum seal 30 side until the preset pressure is reached by adjusting the frictional force due to the contact between the O-ring 92 and the outer peripheral surface. The present invention is not limited to this configuration. For example, a thin pin-shaped stopper member is provided in front of the aluminum seal 30 of the outflow passage 94, and when the pressure reaches a preset pressure, the stopper member is pressed by the perforating member 82. It is good also as a structure which ruptures and the perforation member 82 moves to the aluminum seal 30 side.

  The embodiments of the present invention have been described above with reference to the embodiments. However, these embodiments are merely examples, and various modifications can be made without departing from the scope of the invention. It goes without saying that the scope of rights of the present invention is not limited to these embodiments.

10 Sealing device (Sealing / pump-up device)
11 Casing (housing)
12 Compressor unit (compressed air supply means)
18 Liquid container (container)
20 injection unit 29 outlet 30 aluminum seal (sealing member)
32 Sealing agent 40 Pressurized liquid supply chamber (liquid supply chamber)
78 Joint hose (fluid supply piping)
82 Perforated member 92 O-ring (seal member)
94 Outflow passage 100 Tire (Pneumatic tire)
170 Air hose 180 Sealing device (Sealing / pump-up device)

Claims (2)

A container containing a sealing agent, and an outflow passage of the sealing agent sealed with a sealing member;
An injection unit having a liquid supply chamber that communicates with the container via the outflow passage when the container is connectable and the sealing member is broken in a state where the container is connected;
Compressed air supply means for generating compressed air and supplying the compressed air to the liquid supply chamber;
A fluid supply pipe that connects the injection unit and the pneumatic tire, and guides the compressed air and a sealing agent that has flowed into the liquid supply chamber through the outflow path into the pneumatic tire;
A piercing member that is disposed closer to the outlet side of the outflow path than the sealing member, moves to the sealing member side in response to an increase in pressure in the passage path of the compressed air, and breaks the sealing member;
Sealing and pump-up device.   The sealing / pump-up device according to claim 1, wherein a sealing member that seals a space between the outer peripheral surface of the perforating member and the inner peripheral surface of the outflow passage is provided.

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