JP2011126185A - Pump-up device, sealing pump-up device, and valve body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify the composition of a depressurization mechanism for a pump-up device etc. <P>SOLUTION: Since a pressure releasing valve body 60 is composed by forming an approximately C-shaped notch 62 in an intake valve body 196 in a sealing pump-up device 10, components such as a casing used in general relief valves and a valve biasing elastic body are not used, and the number of components of a part corresponding to a relief valve is reduced, so that a time for assembling a part corresponding to a relief valve can also be reduced. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a pump-up device that generates a compressed fluid, and a sealing agent that seals a punctured pneumatic tire is injected into the pneumatic tire and the compressed air is fed into the pneumatic tire to increase the internal pressure of the pneumatic tire. The present invention relates to a sealing / pump-up device and a valve body used for a safety valve.

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. This type of sealing / pump-up device is provided with a pump-up device (air compressor) that generates compressed air.
An example of the sealing / pump-up device is described in Patent Document 1.
Further, in this type of sealing / pump-up device, a pressure relief mechanism for releasing unnecessary pressure, a so-called safety valve (relief valve), is provided in the pump-up device part in order to suppress an increase in pressure more than necessary. An example of a safety valve is described in Patent Document 2.

JP 2007-44953 A JP 2001-82287 A

  However, the safety valve is composed of a number of components such as a valve body, a casing (valve box) having a space for accommodating the valve body, a spring for biasing the valve body against a valve seat provided in the casing, and a seal member. Therefore, the structure is complicated and it takes time to assemble.

  The present invention has been made in view of the above-described facts, and an object thereof is to provide a pump-up device, a sealing pump-up device, and a valve body that can simplify the configuration of the pressure release mechanism.

  The invention according to claim 1 is a pump-up device that compresses and discharges the gas supplied to the compression chamber by the compression means, and is provided in the compression chamber or the compression means to flow the gas into the compression chamber. An intake portion, a first on-off valve that is provided in the intake portion, allows gas to flow into the compression chamber, and restricts gas flow out of the compression chamber; and is provided in the compression chamber or the compression means, An exhaust section that discharges gas to the outside of the compression chamber; a second on-off valve that is provided in the compression chamber or the compression unit, allows gas to flow out of the compression chamber, and restricts gas inflow into the compression chamber; In the case where the compression chamber or the compression means is formed to communicate with the inside and outside of the compression chamber, a valve body capable of closing the communication portion, and the internal pressure of the compression chamber is equal to or lower than a preset internal pressure. The closed state of the communication part by the valve body Maintaining, when the internal pressure of the compression chamber exceeds a preset internal pressure, elastically deforms to release the closed state of the communicating portion by the valve body and to release the gas in the compression chamber to the outside And having.

Next, the operation of the pump-up device according to claim 1 will be described.
When a gas such as air flows into the compression chamber via the intake portion, the first on-off valve allows the gas to flow into the compression chamber. At this time, the second on-off valve limits the inflow of gas into the compression chamber via the exhaust part. That is, the first on-off valve functions as a so-called intake valve body, and the second on-off valve functions as a so-called exhaust valve body.

Further, when the gas compressed in the compression chamber is discharged through the exhaust part, the second on-off valve allows the gas to be discharged out of the compression chamber. At this time, the first on-off valve restricts the discharge of gas to the outside of the compression chamber via the intake portion.
When the internal pressure of the compression chamber is equal to or lower than a preset internal pressure, the closed state of the communication portion by the valve body is maintained, and the gas compressed in the compression chamber via the communication portion is sent to the outside via the communication portion. There is no escape.

On the other hand, when the internal pressure of the compression chamber exceeds a preset internal pressure, the elastic body is elastically deformed by the valve body receiving the pressure, the closed state of the communication portion by the valve body is released, and the compression chamber Gas escapes to outside (function as a safety valve).
In claim 1, the compression chamber or the compression means in which the communication path, the valve body, the elastic body, and the communication path are formed is a constituent member as a so-called safety valve, but the compression chamber and the compression means are originally pumped up. Since it is a component as an apparatus and does not require a casing (valve box) for a general safety valve, the number of parts can be reduced and the assembly time can be reduced.

  According to a second aspect of the present invention, in the pump-up device according to the first aspect, the valve body is formed of an elastic material, and a part of the valve body functions as the elastic means.

Next, the operation of the pump-up device according to claim 2 will be described.
In the pump-up device according to claim 2, when the valve body is formed of an elastic material and a part of the valve body functions as an elastic means, the internal pressure of the compression chamber exceeds a preset internal pressure. When the valve body receives pressure, the valve body itself is elastically deformed to release the closed state of the communication portion. In the pump-up device according to the second aspect, the number of parts can be reduced as compared with the case where the valve body and the elastic body are configured as separate parts.

  According to a third aspect of the present invention, in the pump-up device according to the second aspect, the first on-off valve is formed in a plate shape and can be elastically deformed, and the communication portion is provided on the first on-off valve. The opening is formed, and the valve is formed by a part of the first on-off valve so as to close the opening on the first on-off valve.

Next, the operation of the pump-up device according to claim 3 will be described.
When a gas such as air flows through the intake portion, the first on-off valve is elastically deformed to allow the gas to flow into the compression chamber.
When the internal pressure of the compression chamber exceeds a preset internal pressure, the valve body itself is elastically deformed by receiving the pressure, and the closed state of the opening provided in the first on-off valve is released, The gas in the compression chamber is released outside the compression chamber through the opening.

When the internal pressure of the compression chamber exceeds a preset internal pressure, the valve body itself is elastically deformed by receiving the pressure, thereby releasing the closed state of the opening.
In the pump-up device according to claim 3, since the valve body is formed by a part of the first on-off valve, the parts are compared with the case where the first on-off valve and the valve body are configured as separate parts. The score can be reduced.

  The sealing / pump-up device according to claim 4 is the pump-up device according to any one of claims 1 to 3, a container that contains a sealing agent that closes a hole formed in a tire, and And a supply unit that supplies the sealing agent and the compressed gas generated by the pump-up device to the pneumatic tire.

Next, the operation of the sealing / pump-up device according to claim 4 will be described.
In the sealing / pump-up device according to the fourth aspect, the sealing agent accommodated in the container and the compressed gas generated by the pump-up device can be supplied to the pneumatic tire through the supply means.
By supplying the sealing agent and air and then running, the sealing agent is filled in the puncture holes and the puncture holes are closed.

  The invention according to claim 5 is used for a suction path of a pump-up device that compresses the gas sucked from the suction part and discharges it from the exhaust part, and is separated from an end of the suction path when the gas is sucked. A plate-like valve body that allows gas to be sucked and that is elastically deformable to close an end of the suction path when the gas is compressed, and a main body that closes the opening of the suction path; A hole formed in the main body, and provided in the main body so as to close the hole, and when the pressure on the downstream side in the gas passage direction from the main body is equal to or lower than a preset pressure, Maintaining the closed state, and when the pressure downstream of the gas passage in the gas passage direction exceeds a preset pressure, an elastically deformable plate-like pressure relief valve portion that opens the hole; and A valve body.

Next, the operation of the valve element according to claim 5 will be described.
For example, the valve body of the fifth aspect is attached to the suction path of the pump-up device so that the main body closes the end of the suction path.
In the valve body, when the pump-up device compresses gas, the main body portion closes the end of the suction path, and when the pump-up device sucks gas, the main body portion presses against the outside air (the pump-up device side is Due to the negative pressure, it is elastically deformed to move away from the end of the suction path, allowing gas to be sucked.

  Here, when the pressure on the downstream side in the gas passage direction relative to the main body (that is, inside the pump-up device) is equal to or lower than the preset pressure, the pressure relief valve maintains the closed state of the hole, When the pressure on the downstream side of the gas passage direction exceeds a preset pressure, the pressure relief valve part opens a hole, functions as a so-called safety valve, releases unnecessary pressure to the outside, and a pump-up device Suppresses unnecessary pressure rise.

  According to a sixth aspect of the present invention, in the valve body according to the fifth aspect, the pressure relief valve portion is formed by a part of the main body portion.

Next, the operation of the valve element according to claim 6 will be described.
When the pressure on the downstream side of the gas passage direction from the main body exceeds a preset pressure, the pressure relief valve formed in a part of the main body opens the hole and sends unnecessary pressure to the outside. Miss.
In the valve body according to the sixth aspect, since the pressure relief valve portion is formed by a part of the main body portion, the number of parts can be reduced as compared with the case where the pressure relief valve portion is constituted by a separate part from the main body portion. .

Since the pump-up device according to the first aspect has the above-described configuration, the configuration of the pressure relief mechanism can be simplified, and the assembly time can be reduced.
Since the pump-up device according to claim 2 has the above-described configuration, the number of components can be reduced and the configuration of the pressure release mechanism can be further simplified as compared with the case where the valve body and the elastic body are configured as separate components. And the assembly time can be further reduced.
Since the pump-up device according to claim 3 has the above-described configuration, the number of components can be reduced as compared with the case where the first on-off valve and the valve body are configured as separate components, and the configuration of the pressure release mechanism is further increased. It can be simplified and the assembly time can be further reduced.

Since the sealing / pump-up device according to the fourth aspect has the above-described configuration, the configuration of the pressure release mechanism can be simplified.
Since the valve body according to the fifth aspect has the above-described configuration, the configuration of the pressure relief mechanism can be simplified.
Since the valve body according to the sixth aspect has the above-described configuration, the number of parts can be reduced.

It is a perspective view which shows the structure of the sealing and pump-up apparatus which concerns on this Embodiment. It is a perspective view which shows the connection of a sealing pump-up apparatus and a tire. It is sectional drawing which shows the structure of the liquid agent container at the time of storage, an injection | pouring unit, and a pressing jig. It is sectional drawing which shows the structure of the liquid agent container at the time of pushing in a liquid agent container, an injection | pouring unit, and a pressing jig. It is a top view which shows the flange part of an injection | pouring unit. It is sectional drawing which shows the structure of a compressor unit. It is sectional drawing of the principal part of a compressor. It is a perspective view of an exhaust valve. It is a top view of the piston provided with the pressure relief valve body. (A) is a sectional view of the intake valve element when the pressure relief valve element is not operated, and (B) is a sectional view of the intake valve element when the pressure relief valve element is not activated. It is a graph which shows the relationship between a pressure and the position of a valve. It is a perspective view of the valve body for intake concerning a 2nd embodiment. It is sectional drawing of the valve body for intake which concerns on 2nd Embodiment. It is sectional drawing of the compressor which concerns on 3rd Embodiment. It is a top view of the piston concerning a 4th embodiment.

Hereinafter, a sealing / pump-up device according to an embodiment of the present invention will be described.
(Configuration of sealing / pump-up device)
FIG. 1 shows a sealing / pump-up device 10 according to an embodiment of the present invention. The sealing / pump-up device 10 repairs a tire with a sealing agent without replacing the tire and the wheel when a pneumatic tire (hereinafter simply referred to as “tire”) mounted on a vehicle such as an automobile punctures. To do.
As shown in FIG. 1, the sealing / pump-up device 10 includes a box-shaped casing 11, and a compressor unit 12, an injection unit 20, and an injection unit 20 are connected and fixed inside the casing 11. A liquid container 18 and the like are disposed.

  The compressor unit 12 includes a compressor 150 (see FIG. 6) and a power circuit (not shown), which will be described later, and a power cable 14 that extends from the power circuit to the outside of the compressor unit 12. It has been. For example, 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, power can be supplied to the compressor 150 through a power circuit by a battery mounted on the vehicle. become.

  Further, the compressor unit 12 is provided with a power switch 128. When the power switch 128 is turned on, a motor 154 constituting the compressor 150 is driven. The compressor 150 can generate compressed air having a pressure (for example, 300 kPa or more) higher than a specified pressure defined for each type of the tire 100 (see FIG. 2) to be repaired. Here, the compressor unit 12 is provided with a pressure gauge 79, and the internal pressure of the tire 100 can be measured by the pressure gauge 79.

  As shown in FIG. 3, the sealing / pump-up device 10 is provided with a liquid agent container 18 containing a sealing agent 32 and an injection unit 20 to which the liquid agent container 18 is connected. A substantially cylindrical neck portion 26 that protrudes downward is integrally formed at the lower end portion of the liquid container 18, and the diameter is smaller than the container main body portion 22 on the upper end side of the neck portion 26.

  A discharge port 24 for discharging the sealing agent 32 is formed in a circular shape at the lower end of the neck portion 26, and the discharge port 24 is closed by a film-like aluminum seal 30. The outer peripheral edge portion of the aluminum seal 30 is fixed to the peripheral edge portion of the discharge port 24 in the neck portion 26 over the entire periphery by adhesion or the like.

Here, the liquid agent container 18 is formed of a resin material such as PP or PE, and the injection unit 20 also includes the liquid agent container 18 such as PP or PE that can be joined to the outer annular member 28 of the liquid agent container 18 by spin welding. It is integrally molded with the same resin material.
The liquid agent container 18 is filled with a slightly larger amount of the sealing agent 32 than a prescribed amount (for example, 200 g to 400 g) according to the type and size of the tire 100 to be repaired by the sealing / pump-up device 10.

  In the liquid agent container 18 of the present embodiment, the sealing agent 32 is filled without a space without providing a space. However, in order to prevent deterioration of the sealing agent 32 due to oxidation, nitridation, or the like, there is no Ar or the like at the time of shipment. A small amount of the active gas may be enclosed in the liquid agent container 18 together with the sealing agent 32.

On the other hand, the injection unit 20 is integrally provided with a unit main body portion 34 formed in a substantially bottomed cylindrical shape having an open upper end side, and a disk-like flange 36 extending from the lower end portion of the unit main body portion 34 to the outer peripheral side. Provided.
As shown in FIGS. 1 and 5, a circular guide hole 104, an arc-shaped long hole 106, and a holding hole 108 are formed in the flange 36. In the circular guide hole 104, a columnar guide pin 110 standing on the bottom plate 11A is inserted.

  As shown in FIG. 4, the long hole 106 can be hooked with a flange lock claw 126 standing on the bottom plate 11 </ b> A of the casing 11. The flange lock claw 126 is provided with a claw portion 126B at the distal end portion of the elastic piece 126A that can be elastically deformed, and after being inserted into the long hole 106, the claw portion 126B is hooked on the edge portion of the long hole 106. The injection unit 20 is prevented from coming off.

  The holding hole 108 is provided with a cross-shaped bridging portion 108A on the inner peripheral portion of a circular hole, and the bridging portion 108A is mounted on an upper portion of a cylindrical stopper pin 112 erected on the bottom plate 11A. A pair of protrusions 112A is formed on the upper portion of the stopper pin 112, and each protrusion 112A is inserted into a fan-shaped hole portion in which the holding hole 108 is partitioned by the bridging portion 108A. The bridging portion 108A has rigidity to support its own weight of the liquid agent container 18, but breaks when a force of a predetermined level or more acts.

  Further, in the sealing / pump-up device 10, the step portion 26 </ b> A formed in the intermediate portion of the neck portion 26 of the liquid agent container 18 is joined to the upper end portion of the unit main body 34 by spin welding, whereby the liquid agent container 18 is injected into the injection unit. It is connected and fixed to 20. When the neck portion 26 of the liquid agent container 18 is joined to the unit main body 34, a pressurized liquid supply chamber 40 is formed between the liquid agent container 18 and the injection unit 20. The pressurized liquid supply chamber 40 communicates with the inside of the liquid container 18 when the aluminum seal 30 is pierced by a pressing jig 82 described later.

In the injection unit 20, a jig insertion hole 44 having a circular cross section that penetrates between the lower end surface of the injection unit 20 and the pressurized liquid supply chamber 40 is formed at the center of the unit main body 34.
The injection unit 20 is formed with a cylindrical air supply pipe 52 that extends through the unit main body 34 and extends to the outer peripheral side, and the conduit 52 </ b> A of the air supply pipe 52 communicates with the jig insertion hole 44. is doing. One end of the pipe 50 is connected to the outer peripheral end of the air supply pipe 52.

  In addition, a cylindrical gas-liquid supply pipe 74 is integrally formed in the injection unit 20 so as to penetrate the lower end side of the peripheral wall portion of the unit main body 34 and communicate with the pressurized liquid supply chamber 40. A proximal end portion of a joint hose 78 is connected to a distal end portion on the outer peripheral side of the gas-liquid supply pipe 74 via a nipple 76.

  As shown in FIG. 2, a valve adapter 80 is provided at the tip of the joint hose 78 so as to be attachable to the tire valve 102 of the tire 100. By attaching the valve adapter 80 to the tire valve 102, the pressurized liquid supply chamber 40 and the tire 100 can communicate with each other through the joint hose 78.

  On the other hand, on the bottom plate 11A of the casing 11, a rod-shaped pressing jig 82 used for discharging the sealing agent 32 from the liquid agent container 18 is disposed. The pressing jig 82 is formed with a jig communicating portion 88 that extends downward from the upper end surface, branches into a plurality of pieces (for example, four pieces) at an intermediate portion, and the branched portions extend to the outer peripheral side. Yes.

  On the outer peripheral surface of the pressing jig 82, an annular communication groove 90 serving as an air passage is formed in the opening portion of the jig communication portion 88. Further, on the outer peripheral surface of the pressing jig 82, an insertion groove 92 and an insertion groove 94 are formed on the upper side and the lower side of the communication groove 90, respectively. A ring 96 is inserted.

  The jig insertion hole 44 is inserted with a shaft portion 98A of a piercing part 98 on the container side. The piercing part 98 has a disc-shaped perforated portion 98B that expands radially outward at the upper end portion of the shaft portion 98A. I have. A plurality of blades 98C for easily breaking through the aluminum seal 30 are formed on the upper surface of the perforated portion 98B.

  In the state where the liquid container 18 stands upright above the injection unit 20, the sealing agent 32 in the liquid container 18 is in its pressurized state due to its own weight. The perforated part 98 </ b> B faces the front center of the aluminum seal 30, and a slight gap is provided between the perforated part 98 </ b> B and the aluminum seal 30.

  With the above configuration, when the pressing jig 82 is inserted into the jig insertion hole 44, the tip of the pressing jig 82 pushes through the part 98, and the perforated part 98B of the through part 98 breaks through the aluminum seal 30, as shown in FIG. The piercing part 98 is pushed out into the liquid container 18 as shown in FIG.

  As shown in FIG. 4, in a state where the pressing jig 82 is inserted into the jig insertion hole 44, the communication groove 90 of the pressing jig 82 and the air supply pipe 52 are aligned along the axial direction. Thereby, the pipe line 52 </ b> A of the air supply pipe 52 communicates with the jig communication part 88 of the pressing jig 82 via the communication groove 90. In addition, the pair of O-rings 96 press the outer peripheral surface to the inner peripheral surface of the jig insertion hole 44 over the entire circumference in a state where the pressing jig 82 is inserted into the jig insertion hole 44.

(Compressor unit)
Next, the compressor unit 12 will be described.
As shown in FIGS. 6 and 7, a reciprocating compressor 150 of this embodiment is used. The compressor 150 includes a columnar motor 154 and is fixed to a base 156 provided on the bottom plate 11A (see FIG. 1) of the casing 11.

  The motor 154 can be driven by electric power supplied from the power supply circuit, and a pinion 162 is fixed to the rotating shaft 158 of the motor 154 and rotates together with the driving of the motor 154. The pinion 162 meshes with a reduction gear 164 grasped as a reduction gear. A shaft 168 constituting the crankshaft 166 is fixed to the shaft portion of the reduction gear 164 and can be rotated integrally with the reduction gear 164.

  Further, the compressor 150 is provided with a substantially cylindrical crankcase 170 in which a crankshaft 166 and a cylinder 182 (described later) are accommodated. The crankcase 170 is provided with shaft plates (frames) 171 and 173 so as to surround the upper and lower surfaces of the pinion 162 and the reduction gear 164, and a pair of bearings 172 provided on the shaft plates 171 and 173. Thus, the shaft 168 is rotatably supported.

  A double nut 175 is screwed into one end of the shaft 168 to maintain the screw tightening force and make it difficult to loosen the screw. A crank 174 that also serves as a counterweight is fixed to the other end of the shaft 168, and the crank 174 can rotate integrally with the shaft 168. Of course, the crank and the counterweight may be provided separately.

  The crank 174 is connected to one end portion of the piston rod 178 via a support pin 176 that is arranged with the shaft 168 and the shaft center shifted. The piston rod 178 is rotatable around the support pin 176. Here, a piston 180 is provided at the other end of the piston rod 178 and is accommodated in a cylinder 182 accommodated in the crankcase 170. Further, the other end of the piston rod 178 and the piston 180 are connected via a support pin 179.

  When the crank 174 rotates through the pinion 162, the reduction gear 164, and the shaft 168 by driving the motor 154, the piston 180 reciprocates in the cylinder 182 (in the direction of arrow A in FIG. 6).

  The cylinder 182 is closed at one end in the axial direction with a lid portion 182A, and a cylinder chamber G is formed in the cylinder 182 between the piston 180 and the lid portion 182A. The chamber G is configured to repeat expansion and contraction. A discharge port 184 for discharging the compressed air M is formed in the lid portion 182A of the cylinder 182, and a pipe for sending the compressed air M discharged from the discharge port 184 to the injection unit 20 on the outer surface of the lid portion 182A. The other end of 50 is connected.

(Exhaust valve)
An exhaust valve body 54 as shown in FIG. 8 is provided on the outer surface of the lid portion 182A, which allows air to be discharged from the cylinder chamber G to the pipe 50 and prevents air from flowing into the cylinder chamber G from the pipe 50 side. Is provided.
The exhaust valve body 54 is formed of an elastically deformable plate material, for example, a metal plate such as stainless steel. The exhaust valve body 54 is integrally formed with a circular valve main body 54A that closes the discharge port 184, and the valve main body 54A. And a rectangular attachment portion 54B for attaching the valve main body portion 54A to the lid portion 182A.
In this embodiment, the attachment portion 54B is fixed to the lid portion 182A by the rivet 56, but the attachment portion 54B may be fixed by other methods.

When the piston 180 is stationary, the valve body 54A is in close contact with the outer surface of the lid 182A to close the discharge port 184, and when the piston 180 moves to the lid 182A side and the pressure in the cylinder chamber G increases, The valve body 54A is pushed and elastically deformed by the pressure in the cylinder chamber G, and the compressed air is discharged to the pipe 50 from the gap formed between the valve body 54A and the outer surface of the lid 182A.
On the other hand, when the piston 180 moves to the side away from the lid portion 182A and the pressure in the cylinder chamber G becomes negative, the piston 180 comes into close contact with the outer surface of the lid portion 182A and closes the discharge port 184.

(Valve for intake)
As shown in FIGS. 6, 7, and 9, the piston 180 is formed with a round hole-shaped suction port 194 penetrating in the axial direction. The suction port 194 is used for sucking air into the cylinder chamber G. Used.
An end face 180A of the piston 180 is provided with an intake valve body 196 that allows the intake of air into the cylinder chamber G and prevents leakage of air from the intake port 194.

  The intake valve body 196 is formed of an elastically deformable plate material, for example, a metal plate such as stainless steel, and is integrally formed with a circular valve body 196A that closes the suction port 194, and the valve body 196A. And a rectangular attachment portion 196B for attaching the valve body portion 196A to the piston 180. In this embodiment, the attachment portion 196B is fixed to the piston 180 by the rivet 198, but the attachment portion 196B may be fixed by other methods.

When the piston 180 is stationary, the valve body 196A of the intake valve body 196 is in close contact with the end surface 180A of the piston 180 to close the suction port 194, and the piston 180 moves in a direction away from the lid 182A. When the chamber G becomes negative pressure, the intake valve body 196 is pushed and elastically deformed by the outside air, and the outside air flows into the cylinder chamber G from the gap formed between the valve body 196A and the end surface 180A of the piston 180. To do.
In the state where the piston 180 moves to the lid 182A side and the pressure in the cylinder chamber G increases, the valve body 196A comes into close contact with the end surface 180A of the piston 180 and closes the suction port 194.

Further, a pressure relief valve body 60 is formed integrally with the valve main body 196A of the intake valve body 196. A substantially C-shaped notch 62 is formed in the valve main body 196A, and a substantially circular portion surrounded by the notch 62 is configured as a pressure relief valve body 60.
The pressure relief valve body 60 is elastically deformed when the pressure in the cylinder chamber G exceeds a preset pressure, and changes from the state shown in FIG. 10A to the state shown in FIG. A gap is formed around the valve body 60, and pressure is released through the gap.

  That is, in the present embodiment, a safety valve is configured in the intake valve body 196, and the operating pressure of this safety valve is, for example, the material of the plate material of the pressure relief valve body 60, the rigidity of the plate material, and the thickness of the plate material. The area can be adjusted by the area of the suction port 194 covered by the pressure relief valve body 60, the distance L between the ends of the notch 62 (see FIG. 9), and the like.

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

When the tire 100 is punctured, first, an operator places the sealing / pump-up device 10 on, for example, a road surface so that the power switch 128 and the pressure gauge 79 face upward (see FIG. 1). .)
Next, as shown in FIG. 2, the valve adapter 80 of the joint hose 78 is screwed to the tire valve 102 of the tire 100. As a result, the pressurized liquid supply chamber 40 (see FIG. 3) and the tire 100 can communicate with each other through the joint hose 78.

  Next, the operator forcibly pushes the liquid agent container 18 downward by hand or the like (see FIG. 4). Thereby, the bridging portion 108A is pressed by the stopper pin 112 and is broken, and the injection unit 20 moves downward while being guided by the guide pin 110. Along with this movement, the pressing jig 82 pushes up the piercing part 98, and the perforated part 98B of the piercing part 98 breaks through the aluminum seal 30 and enters the container.

As shown in FIG. 4, when the aluminum seal 30 is pierced, 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.
Further, when the liquid container 18 is pushed in, the claw portion 126B of the flange lock claw 126 formed on the bottom plate 11A of the casing 11 is hooked on the edge portion of the long hole 106 formed in the flange 36, and the protrusion of the liquid container 18 114 gets over the tip of the claw 124 formed in the liquid container insertion hole 122 of the casing 11, and the tip of the claw 124 contacts the flat portion 118 of the upper projection 114.

  After pushing the liquid container 18 in this way, the power switch 128 is turned on and the compressor unit 12 is operated. The compressed air generated by the compressor unit 12 is supplied into the liquid agent container 18 through the jig communication portion 88.

  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 and forms a space (air layer) on the sealing agent 32 in the liquid agent container 18. The sealing agent 32 pressurized by the air pressure from the air layer is supplied into the pressurized liquid supply chamber 40 through the hole 31 formed in the aluminum seal 30, and passes through the joint hose 78 from the pressurized liquid supply chamber 40. And injected into the pneumatic tire 100.

  Further, when compressed air is supplied into the liquid agent container 18, pressure is applied to the upper end of the pressing jig 82 to force the pressing jig 82 to come out of the jig insertion hole 44, that is, the liquid agent container 18 and the injection unit 20 are moved upward. However, the tip of the claw 124 of the casing 11 comes into contact with the flat portion 118 of the projection 114 to prevent the liquid agent container 18 from moving upward, and the flange provided on the bottom plate 11A of the casing 11 Since the claw portion 126B of the lock claw 126 is caught by the edge portion of the long hole 106 of the flange 36 and prevents the injection unit 20 from moving upward, the pressing jig 82 comes out of the jig insertion hole 44 and the sealing agent 32 is inserted into the jig. Leaking out of the apparatus through the hole 44 is prevented.

  In addition, after all the sealing agent 32 in the liquid container 18 is discharged, the sealing agent 32 in the pressurized liquid supply chamber 40 is pressurized and supplied into the pneumatic tire 100 through the joint hose 78. When all the sealing agent 32 is discharged from the pressurized liquid supply chamber 40 and the joint hose 78, the compressed air is injected into the tire 100 through the liquid agent container 18, the pressurized liquid supply chamber 40, and the joint hose 78. .

  Next, when it is confirmed by the pressure gauge 79 that the internal pressure of the tire 100 has become the specified pressure, the operator stops the compressor unit 12 and removes the valve adapter 80 from the tire valve 102.

  The worker travels preliminarily for a certain distance 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 to close the puncture hole.

  After completion of the preliminary traveling, the operator re-measures the internal pressure of the tire 100, screwes the valve adapter 80 of the joint hose 78 to the tire valve 102 again as necessary, and restarts the compressor unit 12 to remove the tire 100. Pressurize to the specified 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.

  In the sealing / pump-up device 10 of the present embodiment, as shown in FIG. 9, the pressure relief valve body 60 is configured by forming a substantially C-shaped cut 62 in the intake valve body 196. There are no parts such as a casing (valve box) used for the safety valve and an elastic body for urging the valve, the number of parts corresponding to the safety valve is small, and the assembly time of the part corresponding to the safety valve can also be reduced.

In the graph of FIG. 11, the horizontal axis indicates the differential pressure (P1−P2) between the pressure P1 of the cylinder chamber G and the pressure P2 outside (atmosphere) of the cylinder chamber G, and the vertical axis indicates the intake valve element 196. , And the position of the pressure relief valve body 60 is shown. As shown in the graph of FIG. 11, when the cylinder chamber G becomes negative pressure, the intake valve element 196 opens according to the magnitude of the negative pressure, and when the pressure in the cylinder chamber G exceeds a preset pressure PA, the cylinder chamber The pressure relief valve body 60 opens in accordance with the pressure of G.
When the pressure in the cylinder chamber G exceeds a preset pressure, the pressure relief valve body 60 is elastically deformed to form a gap as shown in FIG. Therefore, pressure more than necessary does not act on the sealing / pump-up device 10 and the tire 100.

[Second Embodiment]
Next, the sealing / pump-up device 10 according to the second embodiment will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same structure as 1st Embodiment, and the description is abbreviate | omitted.
In the first embodiment, the pressure relief valve body 60 is formed by a part of the plate material constituting the intake valve body 196. However, as shown in FIGS. The valve body 196 and the pressure relief valve body 60 may be connected to each other.

A hole 64 is formed in the intake valve body 196 of the present embodiment, and one end side of the pressure relief valve body 60 formed of a plate material is welded 66 or the like so as to close the hole 64 from the opposite side of the cylinder chamber G. And is fixed to the intake valve body 196.
In this embodiment, when the pressure in the cylinder chamber G exceeds a preset pressure, the pressure relief valve body 60 is elastically deformed as shown by a two-dot chain line in FIG. Pressure is relieved through the perforated hole 64. Other functions and effects are the same as those of the first embodiment.

[Third Embodiment]
Next, a sealing / pump-up device 10 according to a third embodiment will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same structure as embodiment mentioned above, and the description is abbreviate | omitted.
In the first embodiment and the second embodiment, the suction port 194 is formed in the piston 180 and the intake valve element 196 is provided in the piston 180. However, as shown in FIG. The intake valve body 196 may be attached so that the suction port 194 is formed in the portion 182A and the suction port 194 is closed on the inner wall of the lid portion 182A.

In the present embodiment, when the cylinder chamber G becomes negative pressure, the intake valve element 196 is elastically deformed so as to be separated from the inner wall of the cylinder, and intake is performed from the intake port 194. Further, when the pressure in the cylinder chamber G exceeds a preset pressure, the pressure relief valve body 60 is elastically deformed to the opposite side of the cylinder chamber G to open the hole 64, and through the opened hole 64. Pressure is released. Other functions and effects are the same as those of the first and second embodiments.
Although not shown, the suction port 194 and the intake valve body 196 may be provided on the side portion of the cylinder 182.
Further, the intake valve element 196 may be that of the first embodiment or may be that of the second embodiment.

[Fourth Embodiment]
Next, a sealing / pump-up device 10 according to a fourth embodiment will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same structure as embodiment mentioned above, and the description is abbreviate | omitted.
In the first to third embodiments, the pressure relief valve body 60 is provided in the intake valve body 196. However, in the present embodiment, as shown in FIG. A relief valve body 60 is provided separately.
The piston 180 is formed with a hole 68 separately from the suction port 194, and an intake valve body 196 not provided with the pressure relief valve body 60 is attached to the suction port 194, and the pressure relief valve body 60 is provided. Is attached to the surface of the piston 180 opposite to the cylinder chamber G.

  In this embodiment, when the pressure in the cylinder chamber G exceeds a preset pressure, the pressure relief valve body 60 is elastically deformed to open the hole 68, and the pressure is released through the opened hole 68. . Other functions and effects are the same as those of the first embodiment.

[Fifth Embodiment]
Next, a sealing / pump-up device 10 according to a fifth embodiment will be described. Although illustration is omitted, a hole is formed in the lid portion 182A of the cylinder 182 or the side portion of the cylinder 182, and pressure relief is performed so as to cover the hole on the outer surface of the lid portion 182A of the cylinder 182 or the outer side surface of the cylinder 182. The valve body 60 may be attached.
In the fifth embodiment, similarly to the fourth embodiment, the safety valve can be configured simply by forming a hole and attaching the pressure relief valve body 60.

[Other Embodiments]
In the above embodiment, the example in which the intake valve body 196 is directly attached to the components constituting the compressor 150 has been shown. However, the intake valve body 196 may be provided in the intake path from the atmosphere to the cylinder chamber G and directly to the compressor 150. It does not have to be attached.
In the above-described embodiment, an example in which the intake valve body 196 is provided in the compressor 150 of the sealing / pump-up device 10 is shown. However, the intake valve body 196 is an intake of an air compressor, a hydraulic pump, or the like used in general fluid equipment. Applicable to routes.

The shape of the pressure relief valve body 60 in the above embodiment is substantially circular, but may be other shapes such as a rectangle.
Although the pressure relief valve body 60 of the above-described embodiment itself functions as a spring, a spring as a separate part for biasing the pressure relief valve body 60 may be separately provided.
In the above embodiment, the compressor 150 is of a reciprocating type, but the compressor 150 may be of other types such as a rotary type.
Furthermore, the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made within the scope of the claims.

10 Sealing / pump-up device 20 Injection unit (supply means)
18 Liquid container 32 Sealing agent 54 Exhaust valve body 78 Joint hose (supply means)
150 Compressor (pump-up device)
180 piston (compression means)
182 cylinder (compression chamber)
184 Discharge port 194 Suction port 196 Suction valve

Claims (6)

A pump-up device that compresses and discharges the gas supplied to the compression chamber by a compression means,
An intake section that is provided in the compression chamber or the compression means and allows gas to flow into the compression chamber;
A first on-off valve that is provided in the intake section and allows gas to flow into the compression chamber and restricts gas flow out of the compression chamber;
An exhaust part that is provided in the compression chamber or the compression means and discharges gas to the outside of the compression chamber;
A second on-off valve that is provided in the compression chamber or the compression means, allows gas to flow out of the compression chamber, and restricts the inflow of gas into the compression chamber;
A communication portion formed in the compression chamber or the compression means and communicating between the inside and the outside of the compression chamber;
A valve body capable of closing the communication portion;
When the internal pressure of the compression chamber is less than or equal to a preset internal pressure, the closed state of the communication portion by the valve body is maintained, and when the internal pressure of the compression chamber exceeds a preset internal pressure, elasticity is maintained. Elastic means for deforming to release the closed state of the communication portion by the valve body and to let the gas in the compression chamber escape to the outside;
A pump-up device having.   The pump-up device according to claim 1, wherein the valve body is formed of an elastic material, and a part of the valve body functions as the elastic means. The first on-off valve is formed in a plate shape and is elastically deformable,
The communication portion is an opening formed in the one on-off valve,
The pump-up device according to claim 2, wherein the valve body is formed by a part of the first on-off valve so as to close the opening on the first on-off valve. The pump-up device according to any one of claims 1 to 3,
A container for containing a sealing agent that closes a hole formed in the tire;
Supply means for supplying the sealing agent and compressed gas generated by the pump-up device to a pneumatic tire;
Sealing and pump-up device. Used in a suction path of a pump-up device that compresses the gas sucked from the suction part and discharges it from the exhaust part. When sucking the gas, the gas is sucked away from the end of the suction path, and the gas is allowed to be sucked. A plate-like valve element that is elastically deformable and closes the end of the suction path during compression,
A main body for closing the opening of the inhalation path;
A hole formed in the main body,
The main body is provided so as to close the hole, and when the pressure on the downstream side in the gas passage direction from the main body is equal to or lower than a preset pressure, the closed state of the hole is maintained. A plate-shaped pressure relief valve that is elastically deformable and opens the hole when the pressure downstream of the gas passage direction exceeds a preset pressure,
A valve body.   The valve body according to claim 5, wherein the pressure relief valve portion is formed by a part of the main body portion.

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