JP2010162847A - Sealing pump-up device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sealing pump-up device capable of restraining a sealant supplied to a tire from being leaked to an outside. <P>SOLUTION: A sealing device 10 includes an injection unit 20 equipped with a liquid supply chamber 40 connected to a flow-out port 29 of a liquid agent container 18, a tool insertion hole 44 for communicating the outside with the liquid supply chamber 40, a tool 82 for breaking an aluminum seal 30 of the flow-out port 29, by pressing a punching member 62 by insertion into the tool insertion hole 44, to open the flow-out port 29, and for sealing the tool insertion hole 44, a compressed air supply means for bringing a pair of electrodes 202 into contact with a conductor 204 when the tool 82 is brought into an attached state, and for bringing a driving circuit S of a motor M into electric continuity, to supply the compressed air from an air compressor P into the liquid agent container 18, and a joint hose 78 for guiding the sealant 32 flowing out into the liquid supply chamber 40 through the flow-out port 29 and the compressed air, to the tire 100, and the sealant 32 supplied to the tire 100 is thereby restrained from being leaked to the outside. <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, sealing devices described in Patent Documents 1 to 4 are known. In the sealing device of 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 screwed to the sealant extraction unit, and the aluminum foil (sealing member) that closes the opening of the storage container is broken through the chamfered portion of the sealant extraction unit. . 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 JP-A-5-139128 JP 2005-335155 A JP 2007-112113 A

  However, the sealing device disclosed in Patent Document 1 stores the aluminum foil of the storage container even when the sealing agent extraction unit and the storage container are not sufficiently screwed when the gas is supplied into the storage container. Since the gas can be supplied into the container, the sealing agent may leak out from the screwed portion or the like.

  An object of the present invention is to provide a sealing / pump-up device that suppresses leakage of a sealing agent supplied to a tire to the outside in consideration of the above facts.

  The sealing / pump-up device according to claim 1, wherein a liquid supply chamber to which an outlet of a container containing a sealing agent is connected, an injection unit having a through hole penetrating the liquid supply chamber, and the through hole The sealing member sealing the outflow port is opened to open the outflow port, the opening means for sealing the through hole, the open means opens the outflow port, and the through hole Compressed air supply means for supplying compressed air into the container when sealed, a sealing agent flowing out to the liquid supply chamber through the outlet, and a fluid supply for guiding the compressed air to a pneumatic tire And the compressed air supply means includes a motor, a compressed air generating unit that generates compressed air using the motor as a driving source, a pair of electrodes provided in a driving circuit of the motor, Open A conductive body that contacts the pair of electrodes when connected to the pair of electrodes and conducts between the pair of electrodes, wherein the pair of electrodes is either one of the outer surface of the injection unit and the opening means The conducting body is provided on either the outer surface of the injection unit or the opening means.

  In the sealing / pump-up device according to the first aspect, when the opening means is inserted into the through hole of the injection unit, the sealing member is broken and the outlet of the container is opened. And when an opening | release means seals a through-hole and it will be in an installation state, compressed air will be supplied in a container by a compressed air production | generation means. The compressed air supplied into the container pushes the sealing agent into the liquid supply chamber through the outlet of the container, and the extruded sealing agent and the compressed air are guided to the fluid supply means 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, when the opening means inserted into the through hole is in a mounting state in which the sealing member is broken and the through hole is sealed, the conductive body comes into contact with the pair of electrodes provided in the drive circuit of the motor. The electrodes are electrically connected, the motor is driven, and compressed air is generated and supplied into the container. For this reason, it is suppressed that a sealing agent leaks outside from between an opening means and a through-hole. In other words, if the user inserts the opening means into the through hole and breaks the sealing member, but the seal of the through hole is insufficient (incompletely mounted state), the compressed air is not supplied into the container and the user opens it. It is possible to easily determine that the means is inadequate.

  Further, since either one of the pair of electrodes and the conducting body is provided on the outer surface of the injection unit, it is determined whether or not the opening means is in a mounted state (in other words, a state in which the pair of electrodes and the conducting body are in contact). It can also be judged visually.

  As described above, the sealing / pump-up device of the present invention can suppress leakage of the sealing agent supplied to the tire to the outside.

It is the perspective view which looked at the sealing and pump-up device of the first embodiment from the front side. It is the perspective view which looked at the sealing and pump-up device of the first embodiment from the rear side. It is a block diagram which shows the connection state which connected the valve adapter of the front-end | tip of the joint hose of the sealing / pump-up apparatus of 1st Embodiment to the tire valve of the pneumatic tire. (A) It is a partial side view which shows the state before inserting a jig | tool into the jig | tool insertion hole of the sealing pump-up apparatus of 1st Embodiment. (B) It is a fragmentary sectional side view of the jig | tool inserted in the jig | tool insertion hole of FIG. 4 (A). It is the upper side figure which looked at the jig of a 1st embodiment from the upper part. It is the bottom view which looked at the leg part of the injection unit of a 1st embodiment from the lower part. It is a fragmentary sectional side view which shows the state which mounted | wore the jig | tool insertion hole of the sealing pump-up apparatus of 1st Embodiment with the jig | tool. It is a partial side view which shows the state before inserting a jig | tool into the jig insertion hole of the sealing pump-up apparatus of other embodiment.

[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. 1 is a perspective view of the sealing device 10 according to the first embodiment as viewed from the front side, FIG. 2 is a perspective view of the sealing device 10 as viewed from the rear side, and FIG. 3 is a perspective view of the sealing device 10. It is a lineblock diagram showing the state where tire 100 was connected.

  As shown in FIGS. 1 and 2, the sealing device 10 includes a box-shaped casing 11, and a compressor unit 12, an injection unit 20, and a liquid container connected and fixed to the injection unit 20 inside the casing 11. 18 are arranged respectively.

(Compressor unit)
2 and 3, the compressor unit 12 includes an air compressor P as an example of a compressed air generation unit, a motor M as a drive source of the air compressor P, and a drive circuit S for the motor M, respectively. Yes. 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 cigarette lighter socket, power can be supplied to the drive circuit S from a battery (DC 12 V in this embodiment) mounted on the vehicle. The drive circuit S is provided with a switch unit. This switch portion is composed of a pair of electrodes 202 (electrodes 202A and 202B shown in FIG. 4) and a conductive body 204 that is in contact with the pair of electrodes 202 and conducts between the pair of electrodes 202. A state where the body 204 is in contact with the pair of electrodes 202 is an on state of the switch unit, and a state where the body 204 is not in contact is an off state of the switch unit. The pair of electrodes 202 is provided in an injection unit 20 described later, and the conductive body 204 is provided in a jig 82 described later.

  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 (see FIG. 3) to be repaired. Further, as shown in FIG. 1, the power cable 14 extends from the lower part of the casing 11 to the outside of the casing 11, and an outer periphery of a cylindrical cable winding part provided at an intermediate part at the lower part of the casing 11. It is wrapped around the surface. The plug 15 is accommodated in a groove 21 formed in the front side wall surface 11F of the casing 11.

  As shown in FIGS. 1 and 2, the compressor unit 12 includes a pressure gauge 16 that measures the pressure of the compressed air generated by the air compressor P. The pressure gauge 16 is the upper wall surface 11U of the casing 11. It is attached near the center. Further, a manual 17 in which an operation procedure of the sealing device 10 and precautions for use are written is attached to the upper wall surface 11U of the casing 11.

(Liquid container)
As shown in FIG. 3 and FIG. 4A, the liquid agent container 18 accommodates the sealing agent 32 therein, and the lower end portion of the cylindrical portion (neck portion 26) is smaller in diameter than the container main body portion on the upper end side. ). The opening at the tip (lower end in FIG. 3) of the neck 26 is an outlet 29 through which the sealing agent 32 flows out from the liquid container 18 and is closed with a film-like aluminum seal 30. The outer peripheral edge of the aluminum seal 30 is fixed to the peripheral edge of the outlet 29 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.

  The liquid container 18 is formed from various resin materials having gas barrier properties and metal materials such as aluminum alloys, and the type of the tire 100 (see FIG. 3) 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.

  In the sealing device 10 of the present embodiment, when the upright state shown in FIGS. 2 and 3 (the liquid container 18 is on the upper side and the injection unit 20 is on the lower side), the sealing agent 32 in the liquid container 18 is under its own weight. The aluminum seal 30 of the liquid container 18 is in a pressurized state.

(Injection unit)
As shown in FIG. 4 (A), the injection unit 20 includes a unit main body portion 34 formed in a substantially bottomed cylindrical shape having an open upper end side, and a circle protruding from the lower end portion of the unit main body portion 34 to the outer peripheral side. A plate-like leg portion 36 is provided, and the leg portion 36 is fixed to the bottom surface inside the casing 11. Further, the lower end side of the neck portion 26 of the liquid agent container 18 is inserted into the inner peripheral side of the unit main body portion 34, and the stepped portion 28 of the neck portion 26 is joined to the upper end surface (upper end surface of the peripheral wall portion) of the unit main body portion 34. A container 18 is connected and fixed to the injection unit 20.

  When the neck 26 is joined to the unit main body 34, a liquid supply chamber 40 is formed between the inner wall surface of the unit main body 34 and the aluminum seal 30. The liquid supply chamber 40 communicates with the inside of the liquid agent container 18 when the aluminum seal 30 is broken by a jig 82 described later. That is, when the aluminum seal 30 is broken and the outlet 29 is opened, the sealing agent 32 that flows out from the outlet 29 flows into the liquid supply chamber 40.

  A substantially cylindrical inner cylindrical portion 42 is formed coaxially on the inner peripheral side of the unit main body 34. The inside of the inner peripheral cylindrical portion 42 is a through-hole having a circular cross section (hereinafter referred to as a through hole) that passes between the lower end surface of the injection unit 20 (the bottom surface of the leg portion 36) and the upper end surface of the inner peripheral cylindrical portion 42 along the central axis. , A jig insertion hole 44). As shown in FIG. 4A, a jig insertion port 11 </ b> A for inserting a jig 82 described later into the jig insertion hole 44 is formed on the bottom wall surface 11 </ b> B of the casing 11. The jig insertion port 11A is closed by a seal 39 attached to the bottom wall surface 11B.

  In addition, a cylindrical air supply pipe whose proximal end is joined to the outer peripheral surface of the inner peripheral cylindrical portion 42 and whose distal end extends to the outer peripheral side through the peripheral wall portion of the unit main body 34. 52 is formed. A distal end portion of a pressure hose 50 described later is connected to the distal end portion of the air supply pipe 52 via a check valve (not shown) and a nipple 54. Note that a check valve may not be provided. Further, the inside of the unit main body 34 communicates with the inside of the jig insertion hole 44 through a plurality of (two in this embodiment) throttle portions 56 formed in the peripheral wall portion of the inner peripheral cylindrical portion 42. Yes.

  The throttle portions 56 of the inner peripheral cylindrical portion 42 are each formed as a through hole with a circular cross section and a constant inner diameter over the entire length, and the inner diameter is smaller than the inner diameter of the air supply pipe 52. One opening of the throttle portion 56 is formed at an intermediate portion on the inner peripheral surface of the inner peripheral cylinder portion 42, and serves as an air supply port 58 through which air can be supplied to the jig insertion hole 44.

  As shown in FIGS. 3 and 4A, the pressure hose 50 has a base end connected to the air compressor P of the compressor unit 12. Thereby, the compressed air generated by the air compressor P is supplied to the jig insertion hole 44 through the pressure hose 50, the air supply pipe 52, and the throttle portion 56.

  As shown in FIG. 4A, a cylindrical gas-liquid supply pipe 74 extending to the outer peripheral side so as to be opposite to the air supply pipe 52 is integrated with the peripheral wall portion of the unit main body 34. Is formed. The gas-liquid supply pipe 74 has an inside communicating with the liquid supply chamber 40 and a tip 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. Further, the tip end side of the joint hose 78 and the valve adapter 80 extend from the rear side wall surface 11R of the casing 11 to the outside.

  As shown in FIG. 2, a groove 25 for accommodating the joint hose 78 and the valve adapter 80 is formed in the rear side wall surface 11R of the casing 11, and the joint hose 78 and the valve adapter are accommodated in the groove 25. 80 is stored. When the sealing device 10 is used, the valve adapter 80 is taken out from the groove 25 together with the joint hose 78, and connected to the tire valve 102 of the tire 100 so that the joint hose 78 and the tire 100 are communicated (see FIG. 3). Here, in a state in which the valve adapter 80 is connected to the tire valve 102, the internal spaces of the 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 communicate with each other. The sealing agent 32 that has flowed into the liquid supply chamber 40 can be guided to the tire side via the gas-liquid supply pipe 74, the joint hose 78, and the valve adapter 80. In this embodiment, the gas / liquid supply pipe 74, the joint hose 78, and the valve adapter 80 are used as fluid supply means.

  As shown in FIGS. 1 and 2, a front window surface 11 </ b> F and a rear wall surface 11 </ b> R of the casing 11 are respectively provided with a peep window 19 for peeping into the casing 11.

(Perforated member)
As shown in FIG. 4A, the shaft portion 63 of the piercing member 62 is inserted into the jig insertion hole 44 on the liquid supply chamber 40 side. The piercing member 62 is provided with a disc-shaped piercing portion 64 that expands radially outward in the upper end portion of the shaft portion 63. At the outer peripheral end of the upper surface of the perforated part 64, a protruding blade part 66 for making the aluminum seal 30 easily pierced is continuously formed. On the outer peripheral surface of the shaft portion 63, annular insertion grooves are formed in the upper and lower portions of the air supply port 58 in a state of being inserted into the jig insertion hole 44. A rubber O-ring 72 is inserted into the insertion groove.

  The pair of O-rings 72 are in pressure contact with the inner peripheral surface of the jig insertion hole 44 over the entire circumference in a state where the shaft portion 63 is loaded in the jig insertion hole 44. As a result, the jig insertion hole 44 is sealed by the shaft portion 63 and the pair of O-rings 72 on the upper side and the lower side of the air supply port 58, respectively. At this time, the shaft portion 63 is held inside the jig insertion hole 44 by friction between the O-ring 72 and the inner peripheral surface of the jig insertion hole 44. In this state, the front end surface of the perforated part 64 faces the front center of the aluminum seal 30, and a gap exists between the perforated part 64 and the aluminum seal 30.

(jig)
As shown in FIGS. 4B and 5, the jig 82 includes a rod-shaped insertion portion 84 that is press-fitted (inserted) into the jig insertion hole 44, and a substantially rectangular shape formed at one end of the insertion portion 84. The base part 86 is provided. The insertion portion 84 is formed with a jig communication path 88 that extends from the distal end surface toward the base portion 86 and bends and extends toward the outer peripheral side at the intermediate portion. An annular communication groove 90 is formed on the outer peripheral surface of the insertion portion 84.

  On the outer peripheral surface of the insertion portion 84, insertion grooves are formed on the upper side and the lower side of the communication groove 90, and O-rings 96 are inserted into the pair of insertion grooves. The O-ring 96 is of the same size and material as the O-ring 72 disposed on the piercing member 62. Further, the length of the insertion portion 84 is longer than the dimension from the lower end of the jig insertion hole 44 to the aluminum seal 30. Thus, when the entire insertion portion 84 of the jig 82 is press-fitted into the jig insertion hole 44, the punching member 62 is reliably pushed out of the jig insertion hole 44 as shown in FIG. 5. In a state where the entire insertion portion 84 is press-fitted into the jig insertion hole 44, the communication groove 90 of the insertion portion 84 and the air supply port 58 of the throttle portion 56 are aligned along the axial direction. As a result, the throttle 56 communicates with the jig communication path 88 of the jig 82 via the communication groove 90.

  Then, the pair of O-rings 96 is configured such that, with the insertion portion 84 being press-fitted into the jig insertion hole 44, the outer peripheral end is pressed against the inner peripheral surface of the jig insertion hole 44 over the entire circumference. Yes. Thus, in a state where the entire insertion portion 84 is press-fitted into the jig insertion hole 44, the jig insertion hole 44 is sealed by the insertion portion 84 and the pair of O-rings 96 on the upper side and the lower side of the throttle portion 56, respectively. In other words, the jig insertion hole 44 is sealed. At this time, the jig 82 is held in the jig insertion hole 44 by friction between the outer peripheral end of the O-ring 96 that contacts the inner peripheral surface of the jig insertion hole 44 and the outer peripheral surface of the insertion portion 84. It has become. In this embodiment, the entire insertion portion 84 of the jig 82 is press-fitted into the jig insertion hole 44, the outlet 29 is opened, and the jig insertion hole 44 is sealed by a pair of O-rings 96. The jig 82 is mounted.

  Here, in the mounted state of the jig 82, the pressure hose 50, the air supply pipe 52, the throttle portion 56, the communication groove 90, the jig communication path 88, and the internal space of the liquid supply chamber 40 communicate with each other, and the air compressor P The compressed air generated by the above is supplied into the liquid container 18. Note that the air supply path 60 is constituted by these internal spaces. The compressed air supply means is constituted by the compressor unit 12 and the air supply path 60.

  In addition, a jig housing portion (not shown) for housing a jig 82 described later is formed on the front side wall surface 11F of the casing 11. This jig storage part can be inserted and stored by inserting the insertion part 84 of the jig 82.

Next, the pair of electrodes 202 and the conductive body 204 described above will be described.
As shown in FIGS. 4B and 5, a plate-like conductive body 204 is provided on the surface of the base portion 86 of the jig 82 on the insertion portion 84 side. The conductor 204 may be made of any conventionally known material as long as it has conductivity.

  As shown in FIGS. 4A and 6, a recess 206 is provided on the bottom surface of the leg portion 36 of the injection unit 20, and a pair of electrodes 202 is provided on the bottom surface 206 </ b> A of the recess 206. ing. The pair of electrodes 202 has an electrode 202A on the side close to the jig insertion hole 44 and an electrode 202B on the far side. Further, the recess 206 is configured such that the conductor 204 enters when the entire insertion portion 84 of the jig 82 is press-fitted into the jig insertion hole 44. Here, when the jig 82 is in the mounted state, the conducting body 204 that has entered the recess 206 comes into contact with the electrode 202A and the electrode 202B so that the electrode 202A and the electrode 202B can be electrically connected. Note that the jig insertion port 11 </ b> A of the present embodiment is an opening having a larger diameter than the base portion 86 of the jig 82.

(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. Note that the manual 17 described above describes the operation procedure of the sealing device 10 and the precautions in letters and illustrations.

  First, when the tire 100 is punctured, the user takes out the sealing device 10 from the storage space of the vehicle and arranges it on the road surface, etc., takes out the joint hose 78 together with the valve adapter 80 from the groove 25, and removes the valve adapter 80. The tire 100 is connected to the tire valve 102 (see FIG. 3). Thereby, the liquid supply chamber 40 and the inside of the tire 100 communicate with each other through the joint hose 78, the valve adapter 80, and the tire valve 102.

  Next, the user takes out the plug 15 from the groove 21 and unwinds the power cable 14 from the cable winding portion. Then, the plug 15 is inserted into a socket (not shown) of a cigarette lighter installed in the vehicle, and the vehicle engine is started. Thereby, electric power can be supplied from the vehicle battery (DC 12 V in the present embodiment) to the drive circuit S of the compressor unit 12.

  Next, the user peels off the seal 39 attached to the bottom wall surface 11 </ b> B of the sealing device 10 to open the jig insertion hole 44. Then, the jig 82 is removed from the jig housing part on the front side wall surface 11 </ b> F of the casing 11, and the insertion part 84 is press-fitted (inserted) into the jig insertion hole 44. Then, the piercing member 62 is pressed by the insertion portion 84, pierces the aluminum seal 30 with the blade portion 66, and comes out of the jig insertion hole 44 and enters the liquid agent container 18. When the entire insertion portion 84 of the jig 82 is press-fitted into the jig insertion hole 44 and the jig 82 is in the mounted state, the jig insertion hole 44 is securely sealed by the O-ring 96. At this time, the conductive body 204 of the base portion 86 is in contact with the pair of electrodes 202, and the pair of electrodes 202 are electrically connected. Thereby, an electric current flows into the drive circuit S, the motor M is driven, and the air compressor P generates compressed air. In addition, after the attachment of the jig 82 to the jig insertion hole 44 is completed, the sealing device 10 is placed in an upright state (see FIGS. 1 and 2) and disposed on the road surface.

  The compressed air generated by the air compressor P is supplied into the liquid agent container 18 through the air supply path 60 (see FIG. 7). When the compressed air is supplied into the liquid agent container 18, the compressed air floats above the sealing agent 32 in the liquid agent container 18 to form a space (air layer G) on the sealing agent 32 in the liquid agent container 18. . The sealing agent 32 pressurized by the air pressure from the air layer G is pushed out to the liquid supply chamber 40 through the hole 31 formed in the aluminum seal 30. Further, the joint hose 78, the valve adapter 80, And injected (supplied) into the tire 100 via the tire valve 102. Thereafter, when all the sealing agent 32 is supplied from the liquid supply chamber 40 and the joint hose 78 to the tire 100, the compressed air is injected into the tire 100 via the liquid agent container 18, the liquid supply chamber 40, and the joint hose 78 ( Supply).

  Next, when it is confirmed by the pressure gauge 16 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 jig 82 press-fitted into the jig insertion hole 44 pierces the aluminum seal 30 through the punching member 62, and the entire insertion portion 84 of the jig 82 is the jig insertion hole 44. When the jig 82 in which the O-ring 96 seals the jig insertion hole 44 is mounted, the conductive body 204 comes into contact with the pair of electrodes 202 and the pair of electrodes 202 is conducted. Then, the motor M is driven and the air compressor P generates compressed air, and the generated compressed air is supplied to the liquid agent container 18 via the air supply path 60. In other words, since the compressed air is supplied to the liquid agent container 18 after the jig 82 is in the mounted state, the sealing agent 32 is prevented from leaking outside between the jig 82 and the jig insertion hole 44. . In other words, the user inserted the jig 82 into the jig insertion hole 44 and pierced the aluminum seal 30 with the punching member 62, but the jig 82 in which the pair of electrodes 202 and the conductive body 204 are not in contact is incomplete. In the mounted state, no current flows through the drive circuit S and the motor M is not driven, so that compressed air is not supplied into the liquid agent container 18. For this reason, the user can easily determine that the jig 82 is not properly mounted.

  Further, when the jig 82 is in the mounted state, the conductive body 204 comes into contact with the pair of electrodes 202 provided in the drive circuit S of the motor M, and the pair of electrodes 202 is electrically connected to drive the motor M. Compressed air is generated. That is, in the sealing device 10 according to the present embodiment, the motor M can be driven to generate compressed air with a simple structure in which the conductive body 204 is brought into contact with the pair of electrodes 202 to conduct between the pair of electrodes 202. . In the present embodiment, only the switch portion is provided in the drive circuit S, but a configuration in which a main switch or the like is additionally provided may be employed. However, an increase in the number of parts can be suppressed in the case where only the switch portion is provided in the drive circuit S as in the present embodiment.

Further, by providing the pair of electrodes 202 on the bottom surface 206A of the injection unit 20 and providing the conductive body 204 on the surface of the base portion 86 of the jig 82 on the insertion portion 84 side, the mounting state of the jig 82 (in other words, It is possible to visually determine whether or not the pair of electrodes 202 and the conductive body 204 are in contact with each other.
Further, when a pair of electrodes is provided in the jig insertion hole, the sealing agent flowing out from the outlet port touches the pair of electrodes to prevent electrical conduction between the pair of electrodes through the sealing agent. In the mounted state of the tool 82, it is necessary to take measures such as arranging a seal member such as an O-ring above the pair of electrodes (on the aluminum seal 30 side) or adding a new seal member. However, in the present embodiment, as described above, the pair of electrodes 202 is provided on the bottom surface 206A of the injection unit 20, and the conductor 204 is provided on the surface of the base portion 86 of the jig 82 on the insertion portion 84 side. The sealing agent 32 flowing out from the outlet 29 does not touch the pair of electrodes 202, and the arrangement of the O-ring 96 can be set more freely than when the pair of electrodes are provided in the jig insertion hole. The number of parts is not increased.

[Other embodiments]
In the first embodiment, the insertion portion 84 of the jig 82 is press-fitted into the jig insertion hole 44 so that the jig 82 is mounted. However, the present invention is not limited to this configuration, and FIG. As shown, the jig 82 is fixed to the bottom surface of the casing 11, and the injection unit 20 to which the liquid agent container 18 is connected and fixed is slid downward to insert the insertion portion 84 of the jig 82 into the jig insertion hole 44. It is good also as a structure inserted in.

  In the above-described embodiment, the pair of electrodes 202 is provided in the concave portion 206 of the leg portion 36 of the injection unit 20 and the conductive body 204 is provided on the insertion portion 84 side of the base portion 86 of the jig 82. The invention need not be limited to this configuration, and the conductive body 204 is provided in the recess 206 of the leg portion 36 of the injection unit 20 and the pair of electrodes 202 is provided on the insertion portion 84 side of the base portion 86 of the jig 82. Also good.

  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 / pump-up device 18 Liquid container (container)
20 injection unit 29 outlet 30 aluminum seal (sealing member)
32 Sealing agent 40 Liquid supply chamber 44 Jig insertion hole (through hole)
78 Joint hose (fluid supply means)
82 Jig (opening means)
100 tires (pneumatic tires)
202 Pair of electrodes 204 Conductor M Motor P Air compressor (compressed air generator)
S drive circuit

Claims (1)

A liquid supply chamber to which an outlet of a container containing a sealing agent is connected, and an injection unit having a through-hole penetrating the liquid supply chamber;
An opening means for breaking the sealing member that seals the outlet when inserted into the through hole and opening the outlet, and sealing the through hole;
Compressed air supply means for supplying compressed air into the container when the opening means opens the outlet and seals the through hole;
A sealing agent that has flowed out to the liquid supply chamber through the outlet, and fluid supply means for guiding the compressed air to a pneumatic tire,
The compressed air supply means includes a motor, a compressed air generating section that generates compressed air using the motor as a drive source, a pair of electrodes provided in a drive circuit of the motor, and the opening means. A conductive body that contacts the pair of electrodes and conducts between the pair of electrodes,
The pair of electrodes is provided on either the outer surface of the injection unit or the opening means,
The conducting body is a sealing / pump-up device provided on either the outer surface of the injection unit or the opening means.

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