JP2010208192A - Sealing pump-up device and sealing pump-up method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sealing pump-up device for setting the pressure at sealing agent injection into a tire and the pressure at pressurizing the tire by a single pressure switching valve of simple structure, and a sealing pump-up method. <P>SOLUTION: The sealing pump-up device includes a safety valve 52 for pressure switching between a liquid agent container containing a sealing agent and a pneumatic tire. The safety valve 52 for pressure switching includes a cylindrical part, a valve body 60 reciprocating in the cylindrical part 58, and a compression coil spring 66 urging the valve body 60 toward upstream. At the side part of the cylindrical part 58, a first cylinder hole 70 and a second cylinder hole 72 different in the cylinder longitudinal directional positions and making the cylinder part inside communicate with a tire side connection pipe are formed. At the valve body 60, a valve flow path 96 communicating with the upstream side and opened to a valve body side wall is formed. By switching the cylinder longitudinal directional position of the valve body 60, the safety valve 52 for pressure switching is switched between opened and closed states. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a sealing / pump-up device for injecting a sealing agent for sealing 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. And a sealing pump-up method.

  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 specified pressure without replacing the tire and the wheel. Pump-up devices are widespread. As this type of sealing / pump-up device, for example, the one described in Patent Document 1 is known.

  Such a sealing / pump-up device includes a compressor for supplying compressed air and a liquid agent container in which a sealing agent (repair liquid) is accommodated. In this sealing / pump-up device, compressed air is sent from the compressor to the liquid container, the sealing agent is supplied to the pneumatic tire, and then the pneumatic tire is pumped up by the compressed air from the compressor.

JP 2000-108215 A

  By the way, the injection pressure required for supplying the sealing agent to the pneumatic tire and the pump-up pressure required for pumping up the pneumatic tire are often different from each other.

  However, normally, the pressure of the compressed air supplied from the compressor is constant. For this reason, when the operating pressure of the safety valve provided in the sealing / pump-up device is set as the pressure for injecting the sealing agent, it is pumped up to a pressure higher than the required pump-up pressure after the sealing agent is injected. It is possible to end up.

  In addition, when the operating pressure of the safety valve provided in the sealing / pump-up device is set as the pump-up pressure, it is possible that the injection time will be insufficient and the injection time will increase. . This is a particular concern in an environment where the viscosity of the sealing agent increases, such as in a low temperature environment.

  In consideration of the above facts, the present invention provides a sealing / pump-up device capable of performing pressure setting at the time of injecting a sealing agent into a tire and pressure setting at the time of tire pressurization with a single pressure switching valve having a simple configuration. It is another object of the present invention to provide a sealing / pump-up method.

  According to the first aspect of the present invention, an air supply source that generates compressed air, supplies the generated compressed air, and a sealing agent are accommodated, and compressed air is supplied from the air supply source, and the sealing agent is removed from the air. A liquid supply source for supplying to the entering tire, and a pressure switching valve provided in a connection pipe connecting the liquid supply source and the pneumatic tire, the pressure switching valve comprising: a cylinder portion; And a biasing means for biasing the valve body toward the upstream side in the flow direction of the compressed air, and the cylindrical portion has a longitudinal position in the cylindrical portion. Two openings for injecting sealing agent and pumping up, which are different from each other and communicate between the inside of the cylinder part and the tire side connection pipe, are formed, and the valve body communicates with the upstream side and the side wall of the valve body A valve flow path is formed to open at the bottom.

In the first aspect of the invention, when the sealing / pump-up device is operated and the pressure on the upstream side of the pressure switching valve reaches the set pressure for the sealing agent, the valve channel is in a position where it communicates with one of the openings. The valve body moves until the sealing agent is injected into the pneumatic tire.
When the injection of the sealing agent is completed, the tire side connecting pipe communicates with the space in the tire where the air pressure is still low. For this reason, since the air pressure in the tire connection pipe is rapidly reduced, the air pressure in the valve flow path is rapidly reduced. Accordingly, the valve body moves in the urging direction of the urging means. Thereafter, the valve body moves against the urging force of the urging means by the compressed air from the air supply source. And a valve body moves to the said balance position, a valve flow path is connected to the other of an opening part, and air is inject | poured into a pneumatic tire.
When air is injected into the tire until the inside of the cylinder becomes higher than the prescribed tire pressure, the valve body moves in the direction opposite to the urging direction of the urging means by the compressed air, so that the valve flow path is opened. It does not communicate with any of these. Therefore, it is avoided that the tire pressure is higher than the prescribed tire pressure (set pressure for pumping up).
Accordingly, it is possible to set the pressure when the repair liquid (sealing agent) is injected into the tire and the pressure when the tire is pressurized with a single pressure switching valve.

According to a second aspect of the present invention, a guide groove is formed on the inner wall of the cylindrical portion, and a protrusion that engages with the guide groove is formed on the outer wall of the valve body.
Thereby, the position of the valve body can be switched by a simple mechanism.

According to a third aspect of the present invention, the cylindrical portion is cylindrical, and as the opening portion, a first cylindrical hole portion and a longitudinal position of the cylindrical portion relative to the first cylindrical hole portion are applied by the urging means. A second cylindrical hole portion formed on the urging direction side, and the guide groove includes a linear groove formed along a longitudinal direction of the cylindrical portion, and an urging direction of the urging means from an end of the linear groove. Is composed of a first guide groove having an inclined groove extending obliquely in the circumferential direction to the opposite side, and a second guide groove extending from the end of the inclined groove in the urging direction of the urging means, and supplying a sealing agent Before the protrusion, the protrusion is positioned at the starting end of the linear groove by the urging force of the urging means, and when the supply of the sealing agent is started, the protrusion passes through the linear groove and the inclined groove When the valve flow path communicates with the first cylindrical hole and the supply of the sealing agent is completed, the protrusion is It enters the serial second guide groove, the valve passage wherein the valve body is moved to the balancing position is communicated with the second cylindrical hole section.
In the invention according to claim 3, the valve body moves along the first guide groove and then enters the second guide groove. And since the cylinder part longitudinal direction position of the 2nd cylinder hole part is the energization direction side by an energizing means rather than the 1st cylinder hole part, the pressure when a valve channel communicates with the 2nd cylinder hole part is It is lower than the pressure when the valve channel communicates with the first tube hole.

According to a fourth aspect of the present invention, the cylindrical portion is cylindrical, and as the opening portion, a first cylindrical hole portion and a longitudinal position of the cylindrical portion relative to the first cylindrical hole portion are applied by the urging means. A second cylindrical hole portion formed on the opposite side of the urging direction is formed, and the guide groove includes a linear groove formed along a longitudinal direction of the cylindrical portion, and an end of the linear groove. A first guide groove having an inclined groove extending obliquely in the circumferential direction to the opposite side of the urging direction; a second linear groove extending from the end of the inclined groove in the urging direction of the urging means; and the second straight line A second guide groove having a second inclined groove extending obliquely from the terminal end of the groove toward the biasing direction side of the biasing means; and the biasing direction of the biasing means from the terminal end of the second inclined groove; And a third guide groove extending to the opposite side, and before the sealing agent is supplied, the linear groove is applied by the urging force of the urging means. When the protrusion is located at the start end and the supply of the sealing agent is started, the protrusion passes through the linear groove and is located at the end of the inclined groove so that the valve flow path is in the first tube hole portion. When the supply of the sealing agent is completed, the protrusion enters the second linear groove, reaches the end of the second inclined groove, further enters the third guide groove, and the valve body Is located at the balance position and the valve flow path communicates with the second tube hole.
In the invention according to claim 4, the valve body moves along the first guide groove, then moves along the second guide groove, and further enters the third guide groove. And since the cylinder part longitudinal direction position of a 2nd cylinder hole part is a reverse direction side with respect to the urging | biasing direction by an urging means rather than a 1st cylinder hole part, when a valve flow path is connected to a 2nd cylinder hole part Is higher than the pressure when the valve flow path communicates with the first tube hole.

According to a fifth aspect of the present invention, an air supply source that generates compressed air, supplies the generated compressed air, and a sealing agent are accommodated, and compressed air is supplied from the air supply source, and the sealing agent is removed from the air. A liquid agent supply source for supplying the tire, a cylinder portion provided in a connecting pipe connecting the liquid agent supply source and the pneumatic tire, a valve body reciprocating in the cylinder portion, and the valve body upstream When the sealing agent is supplied to the pressure switching valve, the valve body moves by the pressure of the sealing agent and seals to the pneumatic tire. When the injection of the sealing agent and the injection of the sealing agent is completed, the valve body moves to a balance position where the urging force of the urging means and the pressing force by the compressed air supplied from the air supply source are balanced. Tire to air Is injected, the cylindrical portion is the valve body becomes higher air pressure than the tire pressure of provisions not injected air to the pneumatic tire moving.
According to the fifth aspect of the present invention, it is possible to perform the pressure setting at the time of injecting the sealing agent into the tire and the pressure setting at the time of tire pressure increase with one pressure switching valve.

  According to the present invention, there is provided a sealing / pump-up device capable of performing a pressure setting at the time of injecting a sealing agent into a tire and a pressure setting at the time of increasing the tire with a pressure switching valve having one simple configuration, It can be a pump-up method.

It is a perspective view which shows the structure of the sealing and pumping up apparatus which concerns on 1st Embodiment. It is sectional drawing which shows the structure of the liquid agent container and injection | pouring unit in the sealing pump-up apparatus of 1st Embodiment. It is a perspective view of the safety valve for pressure switching of the sealing pump-up device concerning a 1st embodiment. 4A and 4B are a side sectional view of a pressure switching safety valve of the sealing / pump-up device according to the first embodiment, and a sectional view taken along line 4B-4B in FIG. 4A, respectively. It is. 5A and 5B are a side sectional view of a pressure switching safety valve of the sealing / pump-up device according to the first embodiment, and a sectional view taken along line 5B-5B in FIG. 5A, respectively. It is. 6 (A) and 6 (B) are a side sectional view of a pressure switching safety valve of the sealing / pump-up device according to the first embodiment, and a sectional view taken along the arrow 6B-6B in FIG. 6 (A), respectively. It is. 7A and 7B are a side sectional view of a pressure switching safety valve of the sealing and pump-up device according to the first embodiment, and a sectional view taken along arrows 7B-7B in FIG. 7A, respectively. It is. It is a perspective view of the safety valve for pressure switching of the sealing pump-up device concerning a 2nd embodiment. 9A and 9B are a side sectional view of a pressure switching safety valve of the sealing / pump-up device according to the second embodiment, and a sectional view taken along arrows 9B-9B in FIG. 9A, respectively. It is. 10A and 10B are a side sectional view of a pressure switching safety valve of the sealing and pump-up device according to the first embodiment, and a sectional view taken along arrows 10B-10B in FIG. 10A, respectively. It is. 11A and 11B are a side sectional view of a pressure switching safety valve of the sealing / pump-up device according to the first embodiment, and a sectional view taken along line 11B-11B in FIG. It is. It is side surface sectional drawing of the safety valve for pressure switching of the sealing pump-up apparatus which concerns on 3rd Embodiment. It is a bottom view of the valve body seen from the arrow 13-13 of FIG. It is side surface sectional drawing of the safety valve for pressure switching of the sealing pump-up apparatus which concerns on 3rd Embodiment.

  Hereinafter, embodiments will be described and embodiments of the present invention will be described. In the second and subsequent embodiments, the same components as those already described are denoted by the same reference numerals, and description thereof is omitted.

[First Embodiment]
First, the first embodiment will be described. As shown in FIG. 1, the sealing / pump-up device 10 according to this embodiment is configured such that when a pneumatic tire (hereinafter simply referred to as “tire”) mounted on a vehicle such as an automobile is punctured, the tire and the wheel. Without replacing the tire, the tire is repaired with a sealing agent, and the internal pressure is repressurized (pumped up) to a predetermined specified pressure.

The sealing / pump-up device 10 includes a casing 11 as an outer shell, and a compressor unit 12, an injection unit 20, and a liquid agent container 18 connected and fixed to the injection unit 20 are disposed inside the casing 11. ing.
The sealing / pump-up device 10 is provided with a switch 60 for turning on / off the compressor. Further, a pressure gauge G that displays the pressure of the compressed air supplied to the tire 46 is provided.

  The compressor unit 12 is provided with a motor, an air compressor 12A, a power supply circuit, a control board, and the like, and a power cable 14 extending from the power supply circuit to the outside of the unit. By inserting the plug 15 provided at the tip of the power cable 14 into a socket of a cigarette lighter installed in the vehicle, for example, a battery mounted on the vehicle can supply power to a motor or the like through a power circuit. Become. Here, the compressor unit 12 can generate compressed air having a pressure (for example, 500 kPa or more) higher than a specified pressure defined for each type of tire 46 to be repaired by the air compressor 12A.

  As shown in FIG. 2, a slightly larger amount of sealing agent is contained in the liquid container 18 than a prescribed amount (for example, 300 g to 800 g) according to the type and size of the tire 46 to be repaired by the sealing / pump-up device 10. S is filled. A sealing agent discharge port 24 is opened at the lower end of the liquid container 18, and the discharge port 24 is closed by a film-like aluminum seal 26. An injection unit 20 is connected to the lower side of the liquid container 18.

  The injection unit 20 includes a unit main body 30 that is open at the upper end side and is formed in a substantially bottomed cylindrical shape, and disk-shaped leg portions 38 that extend from the lower end of the unit main body 30 to the outer peripheral side. Yes. The unit main body 30 includes an upper opening 32 connected to the discharge port 24 side of the liquid container 18, a first connection portion 33 connected to the pressure hose 40 extending from the compressor unit 12, and the tire 46 side. The 2nd connection part 34 connected with the joint hose 42 connected is comprised. In addition, a piercing member 27 is disposed in the unit main body 30 so as to face the aluminum seal 26. The piercing member 27 has a shaft portion 27 </ b> A inserted into a communication path 35 configured in the unit main body 30, and is pushed out toward the liquid agent container 18 by inserting a pressing jig 36 from below the communication path 35. Then, the aluminum seal 26 is pierced and enters the liquid agent container 18. The pressing jig 36 is held in the communication path 35, and the discharge port 24, the upper opening 32, the first connecting portion 33, and the second connecting portion 34 are communicated with each other.

The pressure-resistant hose 40 as an air supply path has a base end connected to the air compressor 12 </ b> A in the compressor unit 12 and the other end connected to the first connecting portion 33.
A pressure switching safety valve 52 disposed in the casing 11 is attached to the joint hose 42. Here, the liquid container side joint hose 42A constituting the joint hose 42 is connected to the second connecting portion 34 at the upstream end, and the upstream connection portion 54 of the pressure switching safety valve 52 at the downstream end (see FIGS. 3 to 6). )It is connected to the. And the tire side joint hose 42B which comprises the joint hose 42 is connected to the downstream connection part 56 of the safety valve 52 for pressure switching in an upstream end, and is connected to the tire valve 48 of the tire 46 via the valve adapter 44 in a downstream end. Is done. The joint hose 42 functions as a liquid supply path when the sealing agent S is supplied, and functions as an air supply path when the tire pump is up.

  The pressure switching safety valve 52 includes a cylindrical tube portion 58 and a columnar valve body 60 that reciprocates within the tube portion 58. The upstream connection portion 54 is formed at one end of the cylindrical portion 58, and the downstream connection portion 56 is formed at the outer portion of the cylindrical portion 58. A flat bottom portion 64 is formed at the other end of the cylindrical portion 58, and the valve body 60 is biased toward the one end direction (hereinafter referred to as F direction) between the valve body 60 and the bottom portion 64. A compression coil spring 66 is provided. Note that a hole 65 is formed in the bottom portion 64 so that air between the valve body 60 and the bottom portion 64 can be discharged to the outside when the valve body 60 moves in the other end direction (hereinafter referred to as B direction). ing.

  The tube portion 58 is formed with a first tube hole portion 70 and a second tube hole portion 72 that allow communication between the inside of the tube portion and the outside of the tube portion. The cylinder part longitudinal direction position of the 2nd cylinder hole part 72 is made into the F direction side rather than the 1st cylinder hole part 70, ie, the position of the upstream. Further, the circumferential position of the inner wall of the cylindrical portion of the second cylindrical hole portion 72 is a position rotated by 90 ° in the R direction with respect to the first cylindrical hole portion 70. Further, on the outer wall of the tube portion 58, an overhang portion 74 that has the downstream connection portion 56 and seals the periphery of the first tube hole portion 70 and the second tube hole portion 72 is provided.

  A first guide groove 80 and a second guide groove 90 continuous with the terminal end of the first guide groove 80 are formed on the inner wall of the cylindrical portion 58. The first guide groove 80 extends from the start end toward the B direction, which is the other end direction, and extends while curving continuously at the end of the linear groove 82, between the B direction and the R direction. , I.e., an inclined groove 84 extending obliquely in the circumferential direction toward the side opposite to the urging direction of the compression coil spring 66. The second guide groove 90 extends linearly in the F direction, which is one end direction, continuously from the end 84E of the inclined groove 84, that is, the end 80E of the first guide groove 80. Therefore, the end 90E of the second guide groove 90 is located on the F direction side, that is, on the biasing direction side of the compression coil spring 66 with respect to the end 80E of the first guide groove 80.

  The valve body 60 is formed with a protrusion 94 guided by the first guide groove 80 and the second guide groove 90 and a valve channel 96 communicating with the upstream side of the valve body 60 and opening to the valve body side wall. Has been. When the protrusion 94 is located at the terminal end 80E of the first guide groove 80, the downstream end side opening 98 of the valve channel 96 communicates with the first tube hole 70, and a predetermined position 90K (see FIG. 6), the first guide groove 80, the second guide groove 90, and the valve flow so that the downstream end opening 98 of the valve channel 96 communicates with the second cylindrical hole portion 72. The position and shape of the path 96 are determined. In the present embodiment, the predetermined position 90K is a position slightly on the B direction side from the end 90E of the second guide groove 90. This position is a position on the F direction side from the end 80E of the first guide groove 80.

  Further, the pressure when the downstream end side opening 98 of the valve flow path 96 communicates with the first tube hole portion 70 becomes the sealant set pressure P1 for supplying the sealant to the tire 46, and the valve flow path 96 The first tube hole portion 70 and the second tube hole portion 72 are set so that the pressure when the downstream end side opening 98 communicates with the second tube hole portion 72 becomes the set pressure P2 for pumping up to pump up the tire 46. And each cylinder part longitudinal direction position of the downstream end side opening 98 of the valve flow path 96 and the spring constant of the compression coil spring 66 are set.

Further, as shown in FIG. 4, the cylindrical portion 58 includes a cylindrical inner wall portion near the other end side of the valve body 60 when the valve body 60 is positioned at the F direction side end, and a valve channel 96. Grooves for inserting O-rings are formed in the cylindrical inner wall portion slightly upstream (F direction side) from the downstream end side opening 98, and O-rings 100A and 100B are disposed in these grooves, respectively.
Further, the valve body 60 is formed with a groove for inserting an O-ring around the downstream end side opening 98 of the valve body 60, and the O-ring 102 is disposed in this groove.

Hereinafter, the operation and effect of the present embodiment will be described.
When puncture occurs in the tire 46, first, the operator screws the valve adapter 44 of the joint hose 42 onto the tire valve 48 of the tire 46 so that the joint hose 42 communicates with the tire 46.

  Next, the operator inserts the pressing jig 36 into the communication path 35 of the sealing / pump-up device 10. Thereby, the aluminum seal 26 is pierced by the punching member 27 pressed by the pressing jig 36, and the pressing jig 36 is held in the communication path 35, and the discharge port 24, the upper opening 32, and the first connection. The part 33 and the 2nd connection part 34 are connected.

  The operator places the sealing / pump-up device 10 on the road surface or the like so that the liquid agent container 18 is positioned above the injection unit 20 and turns on the switch 60 to operate the compressor unit 12. As a result, the air compressor 12A is activated to generate and supply compressed air at the sealing agent set pressure P1. At this stage, the pressure switching safety valve 52 is closed.

  The compressed air generated by the air compressor 12 </ b> A passes through the pressure hose 40 and is supplied to the liquid agent container 18. When the compressed air is supplied into the liquid agent container 18, the compressed air floats above the sealing agent S in the liquid agent container 18 to form a space (air layer) on the sealing agent S in the liquid agent container 18. To do.

  Here, since the pressure switching safety valve 52 is closed and the two O-rings 100A, 100B and 102 are disposed, the pressure in the liquid agent container 18 and the joint hose 42A is formed with the formation of the air layer. Rises, and the valve body 60 moves in the B direction against the urging force of the compression coil spring 66. That is, the protrusion 94 moves along the straight groove 82 from the start end 80S of the first guide groove 80 toward the B direction, and further moves along the inclined groove 84, and ends 84E of the inclined groove 84, That is, it reaches the end 80E of the first guide groove 80 (see FIG. 5). Accordingly, the valve body 60 moves in the B direction along the linear groove 82 and further moves in the B direction while rotating in the R direction along the inclined groove 84.

  When the protrusion 94 reaches the end 84E of the inclined groove 84 (the end 80E of the first guide groove 80), the downstream end opening 98 of the valve flow path 96 communicates with the first tube hole 70. Then, the sealing agent S pressurized by the air pressure from the air layer in the liquid agent device 18 is discharged through a hole opened in the aluminum seal 26, goes to the second connecting portion 34, and enters the air through the joint hose 42. It is injected into the tire 46 at a set pressure P1 for the sealing agent that is a specified pressure.

  When the sealing agent S is completely discharged from the liquid container 18 and injected into the tire, the joint hose 42 communicates with the space in the tire where the air pressure is still low. For this reason, the air pressure in the joint hose 42 is rapidly reduced. Therefore, the valve body 60 moves in the F direction along the second guide groove 90 by the biasing force of the compression coil spring 66. In this movement, the protrusion 94 enters the second guide groove 90, passes through the predetermined position 90 </ b> K, and reaches the end 90 </ b> E of the second guide groove 90. Then, the valve body 60 moves again in the B direction against the urging force of the compression coil spring 66 by supplying air from the air compressor 12A.

  When the protrusion 94 reaches the predetermined position 90K, the downstream end side opening 98 of the valve channel 96 communicates with the second cylinder hole portion 72 (see FIG. 6). Then, the compressed air supplied from the air compressor 12A is injected into the tire 46 through the joint hose 42 at the set pressure P2 for pumping up, and the tire 46 is pumped up. The predetermined position K is the position of the protrusion 94 when the valve body 60 moves to a position where the urging force of the compression coil spring 66 and the pressing force with which the compressed air flowing into the cylinder portion 58 pushes the valve body 60 are balanced. .

  When the air pressure in the tire becomes higher than the pump-up set pressure P2, the protrusion 94 moves in the second guide groove 90 in the direction F as shown in FIG. The pressure switch safety valve 52 is closed because the second tube hole 72 and the first tube hole 70 are not communicated with each other. Therefore, the injection of air into the tire is blocked.

  In the present embodiment, in the second guide groove 90, the protrusion 94 can be moved in the F direction, and when moving from the predetermined position K in the B direction, the start end of the second guide groove 90, that is, the first guide. Restriction means for restricting reaching the end 80E of the groove 80 is provided. By this defining means, the downstream end side opening 98 of the valve flow path 96 is prevented from communicating with the first cylindrical hole portion 70 after the tire pressure reaches the pump-up set pressure P2.

  As this restricting means, for example, as shown in FIG. 7, a stopper 110 is provided that is movable in the V direction and biased in the direction of exiting into the second guide groove 90. As for the shape of this stopper, an inclined surface 111 is formed on the upper surface side of FIG. 7 so that the protrusion 94 can move in the F direction and cannot move in the B direction.

  Next, when the operator confirms that the internal pressure of the tire 46 has become the specified pressure by the pressure gauge G provided in the compressor unit 12, the operator stops the compressor unit 12 and removes the valve adapter 44 from the tire valve 48. Remove.

  The worker travels preliminarily for a certain distance using the tire 46 into which the sealing agent S has been injected within a certain time after the completion of the inflation of the tire 46. As a result, the sealing agent S is uniformly diffused inside the tire 46, and the sealing agent S is filled in the puncture hole to close the puncture hole. After completion of the preliminary traveling, the operator re-measures the internal pressure of the tire 46, and if necessary, screwes the valve adapter 44 of the joint hose 42 to the tire valve 48 again, re-activates the compressor unit 12, and removes the tire 46. Pressurize to the specified internal pressure. Thereby, the puncture repair of the tire 46 is completed, and the tire 46 can be used to travel at a constant speed or less (for example, 80 km / h or less) within a certain distance range.

  As described above, in the sealing / pump-up device 10 of the present embodiment, when the sealing agent S is injected, the compressed air is supplied to the liquid agent container 18 at the set pressure P1 for the sealing agent, and the sealing agent S is discharged from the liquid agent container 18. When the tire 46 is pumped up after this, it is possible to pump up with the pump-up set pressure P2 with the pressure switching safety valve 52 having a simple configuration.

  Further, the end 90E of the second guide groove 90 is located on the F direction side of the end 80E of the first guide groove 80, that is, the urging direction side of the compression coil spring 66, and the sealing agent set pressure P1 is pumped up. Higher than the set pressure P2. Therefore, the sealing agent can be injected in a short time.

[Second Embodiment]
Next, a second embodiment will be described. In the present embodiment, an example in which the sealing agent set pressure P1 needs to be lower than the pump-up set pressure P2 will be described. The sealing / pump-up device according to the present embodiment has a pressure switching safety valve 252 as shown in FIGS. 8 to 11 instead of the pressure switching safety valve 52 as compared with the first embodiment. Further, a cylindrical portion 258 in which a first cylindrical hole portion 270 and a second cylindrical hole portion 272 formed at positions different from the first cylindrical hole portion 70 and the second cylindrical hole portion 72 are provided instead of the cylindrical portion 58. Yes. The cylinder part longitudinal direction position of the 2nd cylinder hole part 272 is made into the B direction side rather than the 1st cylinder hole part 270, ie, the downstream position. Further, a valve body 260 similar to the valve body 60 is provided. A valve channel 295 similar to the valve channel 96 is formed in the valve body 260.

Compared with the pressure switching safety valve 52, the pressure switching safety valve 252 is formed with a first guide groove 280 instead of the first guide groove 80, and the second guide groove 290 and the third guide are replaced with the second guide groove 90. A groove 296 is formed.
The 1st guide groove 280 has the linear groove | channel 282 and the inclination groove | channel 284 similar to 1st Embodiment. The length of the inclined groove 284 is slightly shorter than that of the inclined groove 84.
The second guide groove 290 includes a linear groove 292 extending in the F direction continuously to the end 280E of the first guide groove 280 (that is, the end 284E of the inclined groove 284) and the end of the linear groove 292, F And an inclined groove 294 extending in an oblique circumferential direction toward the urging side of the compression coil spring 66. The third guide groove 296 extends linearly in the B direction continuously to the end 294E of the inclined groove 294.

  And the predetermined position K (refer FIG. 11) of the 3rd guide groove 296 is located in the B direction side rather than the terminal end 280E of the 1st guide groove 280, ie, the reverse direction side with respect to the urging | biasing direction of the compression coil spring 66. Yes. Here, the predetermined position K is a position where the downstream end opening 298 of the valve flow path 295 communicates with the second cylindrical hole portion 272 when the protrusion 94 is located at this position. When the protrusion 94 reaches the end 280E, the downstream end opening 298 of the valve channel 295 communicates with the first tube hole 270, and when the protrusion 94 reaches the predetermined position K, the valve channel 295 The positions of the first cylinder hole part 270 and the second cylinder hole part 272 are adjusted so that the downstream end side opening 298 communicates with the second cylinder hole part 272. Therefore, the pressure when the downstream end opening 298 communicates with the second cylinder hole 272 is higher than the pressure when the downstream end opening 298 communicates with the first cylinder hole 270.

  In the present embodiment, the valve body 260 is moved along the first guide groove 280 in the same manner as in the first embodiment so that the protrusion 94 is positioned at the terminal end 280E of the first guide groove 280 (see FIG. 10). Sealing agent is injected at a set pressure P1 for the sealing agent. When the sealing agent S is completely discharged from the liquid agent container 18 and injected into the tire, as described in the first embodiment, the joint hose 42 communicates with the space in the tire where the air pressure is still low. For this reason, the air pressure in the joint hose 42 is rapidly reduced. Therefore, the valve body 260 moves in the F direction along the second guide groove 290 by the biasing force of the compression coil spring 66. In this movement, the protrusion 94 enters the linear groove 292 and further into the curved groove 294, reaches the end 294E of the curved groove 294, and stops moving (the protrusion 94 shown by the two-dot chain line in FIG. 11). reference). Then, the valve body 260 moves again in the direction B against the urging force of the compression coil spring 66 by supplying air from the air compressor 12A.

  When the protrusion 94 reaches the predetermined position K of the third guide groove 296, the downstream end side opening 298 of the valve channel 295 communicates with the second cylinder hole portion 272 (see FIG. 11). Then, the compressed air supplied from the air compressor 12A is injected into the tire 46 through the joint hose 42 at the set pressure P2 for pumping up, and the tire 46 is pumped up.

  When the air pressure in the tire becomes higher than the pump-up set pressure P2, the protrusion 94 moves further in the B direction in the third guide groove 296, and the downstream end side opening 298 of the valve flow path 295 becomes the second cylindrical hole portion 272. In addition, the pressure switching safety valve 252 is closed because it does not communicate with the first tube hole portion 270. Therefore, the injection of air into the tire is blocked.

  Thus, in this embodiment, the predetermined position K of the third guide groove 296 is located on the other end side (B direction side) from the end 280E of the first guide groove 280, and the sealing agent set pressure P1 Is lower than the set pressure P2 for pumping up. Therefore, it is possible to inject a sealing agent that causes problems when injected at high speed at high pressure without causing such problems, and then pumps the tire up to a predetermined pressure. it can. That is, by making the set pressure different between P1 and P2 in this way, an excessive pressure is applied to the sealing agent S, the sealing agent S gels and affects the sealing function, or the sealing agent S is a tire valve. It is possible to prevent clogging.

[Third Embodiment]
Next, a third embodiment will be described. As shown in FIGS. 12 to 14, the sealing / pump-up device according to the present embodiment includes a cylindrical portion 358 instead of the cylindrical portion 58, and a valve body 360 instead of the valve body 60, as shown in FIGS. Are provided with a pressure switching safety valve 352.

  The valve body 360 is formed with a valve flow path 396 that opens to the upstream side (F direction side) of the valve body 360 and two locations on the side wall of the valve body 360. That is, the valve flow path 396 has a first opening 399 and a second opening 400 that opens downstream (B direction side) from the first opening 399 on the side wall of the valve body 360. The first opening 399 and the second opening 400 have the same circumferential position. The opening diameter of the second opening 400 is smaller than that of the first opening 399 (see FIG. 13).

And the 1st cylinder hole part 370 is formed in the cylinder part 358, and the 2nd cylinder hole part is not formed. For this reason, it replaces with the overhang | projection part 74 (refer FIGS. 3-6), and has the downstream connection part 56 which the tire side joint hose 42B connects, and is a small overhang | projection part 374 which seals the circumference | surroundings of the 1st cylinder hole part 370. Is provided on the outer wall of the cylindrical portion 358.
A linear guide groove 380 formed along the longitudinal direction of the tubular portion is formed on the inner wall of the tubular portion 358. A protrusion 394 that is guided by the guide groove 380 is provided on the side wall of the valve body 360.

  In this embodiment, when the sealing agent is injected at the sealing agent set pressure P1, the pressure of the compressed air from the air compressor 12A is increased, and the protrusion 394 is quickly moved from the start end 380S to the end 380E of the guide groove 380. Thus, the first opening 399 is communicated with the first tube hole 370 (see FIG. 12). At that time, the second opening 400 communicates instantaneously with the first tube hole portion 370, but there is no problem because the communication time is short. In addition, since the opening diameter of the first opening 399 is relatively large, it is avoided that a large shearing force acts on the sealing agent when the sealing agent passes through the first opening 399 and is easily solidified.

  When all of the sealing agent S is discharged from the liquid agent container 18 and injected into the tire, the air pressure in the joint hose 42 suddenly decreases, and the urging force of the compression coil spring 66 causes the valve body 360 to move along the guide groove 380. Move in the direction. In this movement, the protrusion 94 passes through the predetermined position 360K. Then, the valve body 360 moves again in the direction B against the urging force of the compression coil spring 66 by supplying air from the air compressor 12A.

  When the protrusion 94 reaches the predetermined position 380K, the second opening 400 communicates with the first tube hole 370 (see FIG. 14). Then, the tire is pumped up at the pump-up set pressure P2. When pumping up, even if the opening diameter of the second opening 400 is relatively small, it can be pumped up in a sufficiently short time.

  When the air pressure in the tire becomes higher than the pump-up set pressure P2, the protrusion 94 further moves in the B direction, and both the first opening 399 and the second opening 400 of the valve flow path 396 are in the first tube hole portion 370. The pressure switching safety valve 352 is closed. Therefore, the injection of air into the tire is blocked. As in the first embodiment, the first opening 399 and the second opening 400 of the valve flow path 396 are prevented from communicating with the first tube hole portion 370 after the tire pressure reaches the pump-up set pressure P2. It is preferable that a restricting means is installed.

  As described above, in the present embodiment, even when the valve body 360 is not moved in the circumferential direction, the pressure setting P1 at the time of injecting the sealing agent into the tire and the pressure increase of the tire can be achieved with one pressure switching safety valve 352. The pressure setting P2 can be performed.

  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 12A Air compressor (Air supply source)
18 Liquid container (Air supply source)
40 Pressure hose (connection piping)
42 Joint hose (connection piping, tire side connection piping)
42A Liquid container side joint hose (connection piping)
42B Tire side joint hose (Tire side connection piping)
46 Tire (Pneumatic tire)
52 Safety valve for pressure switching (pressure switching valve)
58 cylinder part 60 valve body 66 compression coil spring 70 first cylinder hole part 72 second cylinder hole part 80 first guide groove 82 linear groove 84 inclined groove 90 second guide groove 94 protrusion 96 valve flow path 98 downstream end side opening 252 Safety valve for pressure switching (pressure switching valve)
258 Tube portion 260 Valve body 270 First tube hole portion 272 Second tube hole portion 280 First guide groove 282 Straight groove 284 Inclination groove 290 Second guide groove 292 Straight groove (second straight groove)
294 inclined groove (second inclined groove)
295 Valve flow path 296 Third guide groove 352 Safety valve for pressure switching (pressure switching valve)
358 Tube 360 Valve body 396 Valve flow path 380 Guide groove 394 Projection

Claims (5)

An air supply for generating compressed air and supplying the generated compressed air;
A liquid supply source that contains a sealing agent, is supplied with compressed air from the air supply source, and supplies the sealing agent to a pneumatic tire;
A pressure switching valve provided in a connection pipe connecting the liquid supply source and the pneumatic tire;
With
The pressure switching valve includes a cylinder part,
A valve body that reciprocates in the cylindrical portion;
Urging means for urging the valve body toward the upstream side in the flow direction of the compressed air;
Have
On the side part of the cylinder part, two opening parts for sealing agent injection that are different from each other in the cylinder part longitudinal direction and communicate between the cylinder part inner side and the tire side connection pipe, and for pumping up are formed.
A sealing / pump-up device, wherein the valve body is formed with a valve flow path that communicates with the upstream side and opens to a side wall of the valve body. A guide groove is formed on the inner wall of the cylindrical portion,
The sealing / pump-up device according to claim 1, wherein a protrusion that engages with the guide groove is formed on an outer wall of the valve body. The cylindrical portion is cylindrical;
As the opening, a first tube hole portion and a second tube hole portion whose tube portion longitudinal direction position is set to the urging direction side by the urging means with respect to the first tube hole portion are formed,
The guide groove is
A first guide groove having a straight groove formed along the longitudinal direction of the cylindrical portion, and an inclined groove extending obliquely in the circumferential direction from the end of the straight groove to the side opposite to the biasing direction of the biasing means;
A second guide groove extending from the end of the inclined groove in the biasing direction of the biasing means;
Consists of
Before the sealing agent is supplied, the protrusion is located at the start end of the linear groove by the urging force of the urging means,
When the supply of the sealing agent is started, the protruding portion passes through the linear groove and is positioned at the end of the inclined groove, and the valve flow path communicates with the first cylindrical hole portion,
When the supply of the sealing agent is completed, the protrusion enters the second guide groove, the valve body moves to the balance position, and the valve passage communicates with the second tube hole. 2. The sealing / pump-up device according to 2. The cylindrical portion is cylindrical;
As the opening, a first tube hole portion and a second tube hole portion in which the position in the longitudinal direction of the tube portion is opposite to the urging direction by the urging means with respect to the first tube hole portion are formed. And
The guide groove is
A first guide groove having a straight groove formed along the longitudinal direction of the cylindrical portion, and an inclined groove extending obliquely in the circumferential direction from the end of the straight groove to the side opposite to the biasing direction of the biasing means;
A second linear groove extending from the end of the inclined groove in the urging direction of the urging means; a second inclined groove extending in an oblique circumferential direction from the end of the second linear groove toward the urging direction of the urging means; A second guide groove having
A third guide groove extending from the end of the second inclined groove to the side opposite to the biasing direction of the biasing means;
Consists of
Before the sealing agent is supplied, the protrusion is located at the start end of the linear groove by the urging force of the urging means,
When the supply of the sealing agent is started, the protruding portion passes through the linear groove and is positioned at the end of the inclined groove, and the valve flow path communicates with the first cylindrical hole portion,
When the supply of the sealing agent is completed, the protrusion enters the second linear groove and reaches the end of the second inclined groove, and further enters the third guide groove, and the valve body moves to the balance. The sealing / pump-up device according to claim 2, wherein the valve passage is located at a position and communicates with the second cylindrical hole portion. An air supply for generating compressed air and supplying the generated compressed air;
A liquid supply source that contains a sealing agent, is supplied with compressed air from the air supply source, and supplies the sealing agent to a pneumatic tire;
A cylindrical portion provided in a connecting pipe connecting the liquid supply source and the pneumatic tire, a valve body reciprocating in the cylindrical portion, and an urging means for urging the valve body toward the upstream side; A pressure switching valve having
Use
When the sealing agent is supplied to the pressure switching valve, the valve body is moved by the pressure of the sealing agent, and the sealing agent is injected into the pneumatic tire,
When the injection of the sealing agent is completed, the valve body moves to a balance position where the urging force of the urging means and the pressing force by the compressed air supplied from the air supply source are balanced, and air is injected into the pneumatic tire. And
A sealing / pump-up device in which when the inside of the cylinder portion becomes higher than a prescribed tire pressure, the valve body moves by air pressure and air is not injected into the pneumatic tire.

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