JP4843647B2 - Integrated tire puncture repair device - Google Patents

Description

  The present invention relates to an integrated puncture repair device for a tire that can reduce a load on a compressor when filling a sealing agent in a puncture repair device for repairing a punctured tire in an emergency manner.

  As a puncture repair device for repairing a punctured tire as an emergency, for example, as shown in FIG. 10, a tire b and a compressor c are connected to a sealing agent container a using a hose d, By sending compressed air into the sealant container a, the sealant of the sealant container a is pumped into the tire b, and then the tire b is automatically pumped up by the subsequently flowing compressed air. Yes. However, this type of apparatus has a problem in that it is inferior in handling because of many man-hours such as assembly of the apparatus and attachment (piping) of a hose at a puncture repair site.

  In view of this, the present inventor has proposed an integrated puncture repair device in which a compressor, a changeover switch, a sealing agent container, and the like are stored in a storage case. In this integrated puncture repair device, it is desirable to use a compressor as small as possible in order to make the device compact.

  FIG. 9 shows the relationship between the pressure gauge reading of the compressor and the compressed air filling time in puncture repair. As shown in FIG. 9, the pressure of the compressed air from the compressor includes a first pressure region Ya that increases with time from the start of the compressor to the maximum pressure p5 limited by the relief valve, and the maximum pressure. a second pressure region Yb that becomes constant at p5, a third pressure region Yc that decreases from the maximum pressure p5 to the pressure p2, a fourth pressure region Yd that becomes substantially constant at the pressure p2, and the pressure p2 And a fifth pressure region Ye that rises to a pressure p4.

  Here, the pressure fluctuation point q1 in the first pressure region Ya indicates the time when the inner lid that seals the sealing agent in the sealing agent container a is removed by the compressed air from the compressor. And by this removal of the inner lid, the compressed air is substantially supplied into the sealing agent container, and extrusion filling of the sealing agent to the tire side is started. In the second pressure region Yb, the filling of the sealing agent is performed at the maximum pressure p5. In the third pressure region Yc, the transition between the end of filling of the sealing agent and the start of filling of compressed air thereafter is performed. It is an area. The maximum pressure p5 is a safety pressure of the puncture repair device set in consideration of the safety factor, and the compressed air is controlled to be equal to or lower than the safety pressure by a relief valve attached to the compressor. In the fourth and fifth pressure regions Yd and Ye, the tire is filled with compressed air, and the tire is pumped up to the specified internal pressure. The pressure p4 is an apparent tire internal pressure measured on the compressor side, and is 20 to more than the actual tire internal pressure p3, which is the pressure p3 when the compressor is stopped q2 and the pressure in the apparatus is equalized. Increased by about 50 kPa. In the case of a puncture repair device for a passenger car, normally, the pressure p1 at the pressure fluctuation point q1 is 50 to 150 kPa, the pressure p2 is 130 to 180 kPa, the pressure p3 is the designated internal pressure of the tire, and the pressure p4 is the designated internal pressure + 20. -50 kPa, maximum pressure p5 is in the range of 330-350 kPa.

  On the other hand, the puncture repair device may be used at a low temperature such as in winter. In such a case, since the puncture sealant in the sealant container a also has a low temperature, its viscosity increases and its fluidity decreases. Therefore, when puncture repair is performed at a low temperature, a long continuous operation with the maximum pressure p5 is long, such as a long filling time when filling the tire with the puncture sealing agent, that is, an operation time in the second pressure region Yb. Will be forced. This greatly impedes the downsizing of the compressor, such as increasing the burden on the compressor and causing failure and damage.

  As an integrated puncture repair device, the following Patent Document 1 is also known.

Japanese Patent Laid-Open No. 2001-212883

  Therefore, the present invention is based on exhausting high-temperature compressed air from the relief valve to the sealing agent container side, so that the fluidity can be increased by heating the sealing agent with this exhausted compressed air. It is an object of the present invention to provide a tire integrated puncture repair device that can reduce the burden on the compressor and suppress failure and breakage of the compressor, and that can contribute to downsizing of the compressor and thus downsizing of the device.

In order to achieve the object, the invention of claim 1 of the present application provides a storage case,
A compressor that generates compressed air,
A relief valve for releasing the overpressure of the compressor,
And an air intake port for sending compressed air from the compressor to the container body, and a puncture seal from the container body by feeding the compressed air to the mouth of the container body containing a sealing agent for sealing a punctured tire Containing at least a sealing agent container to which a cap body having a sealing agent / compressed air outlet port for sequentially removing the agent and compressed air is attached;
An exhaust pipe for heating the cap body by exhausting compressed air from the relief valve to the vicinity of the cap body is connected to the relief valve.

According to a second aspect of the present invention, the storage case includes a vertically flat rectangular box-shaped case main body, and a partition body extending vertically is provided inside the case main body, so that the case main body includes the sealing body. A first box portion having a first storage space on one side in the width direction in which the agent container is stored with the cap body facing downward; and a second box on the other side in the width direction in which the compressor and the relief valve are stored. And is partitioned into a second box portion having a storage space of
The exhaust pipe exhausts compressed air from the relief valve to the first storage space.

  In the present invention, as described above, an exhaust pipe for exhausting compressed air from the relief valve to the vicinity of the cap body is connected to the relief valve. Since the temperature of the exhaust compressed air reaches approximately 100 ° C., the fluidity can be enhanced by heating the sealing agent passing through the inside of the cap body. Therefore, the burden on the compressor can be reduced, and the failure and breakage of the compressor can be suppressed, and the compressor can be miniaturized and, consequently, the apparatus can be miniaturized.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 is a diagram conceptually showing an integrated puncture repair device for a tire according to the present invention, FIG. 2 is a perspective view of the puncture repair device, FIG. 3 is an exploded perspective view with a front case portion removed, and FIG. 4 is a front case. It is a front view of the state which removed the part.

  As conceptually shown in FIG. 1, an integrated puncture repair device 1 according to the present embodiment includes a compressor 3 that generates compressed air, a relief valve 9 that releases overpressure of the compressor 3, and a sealing agent in a storage case 2. Sealing agent container 6 in which cap body 5 is attached to mouth portion 4A of container body 4 accommodated, connecting hose 75 in which one end extending from compressor 3 side is connected to air intake mouth portion 7 of cap body 5, and a punctured tire An apparatus component including a puncture repair hose 77 having a connection port 76 connectable to T at one end and the other end connected to the sealing agent / compressed air outlet 35 of the cap body 5 is housed. .

  In the present invention, the apparatus constituent member includes at least an exhaust pipe 11 having one end connected to the relief valve 9 and exhausting compressed air from the relief valve 9 from the other end.

  2 to 4, the storage case 2 is a vertical flat rectangular box in which a side plate 2c, 2c, a front plate 2d, and a rear plate 2e on both sides are connected between an upper plate 2a and a bottom plate 2b. The case main body 10 is provided.

  The case body 10 has a partition wall 14 extending vertically in the interior thereof, whereby the case body 10 is arranged on one side in the width direction in which the sealing agent container 6 is stored with the cap body 5 facing downward. A first box portion 10A having a first storage space 15A and a second box portion 10B having a second storage space 15B on the other side in the width direction in which the compressor 3 and the relief valve 9 are stored are partitioned. The The case body 10 can be divided into a front case 10F having the front plate 2d and a rear case 10R having the rear plate 2e.

  An opening 10A1 through which the sealing agent container 6 can be taken in and out and a bottom lid 12 that can open and close the opening 10A1 are provided at the bottom of the first box portion 10A. The bottom lid 12 is guided by, for example, a guide groove (not shown) so as to be slidable in the width direction perpendicular to the up / down direction of the sealant container 6, that is, the vertical direction, and in the closed state. For example, it is easily fixed to the case body 10 by a claw-like hook.

  Next, as shown in FIG. 5, the compressor 3 includes a rod 53 that is attached to a rotating shaft 51 that is driven to rotate by a motor M via a crank 52, a piston 54 that is disposed at the end of the rod, and the piston And a cylinder 56 that forms a cylinder chamber 55 that compresses air between the piston 54 and the piston 54. A known speed reduction mechanism 57 using, for example, a gear, a pulley or the like is interposed between the motor M and the rotation shaft 51, and the rotation of the motor M is reduced to about 1/3 to 1/8. Is communicating to.

  One end of the rod 53 is pivotally supported on the crank 52 via a support pin 58, and a piston 54 is disposed on the other end of the rod 53. In this example, the rod 53 and the piston 54 are formed as an integrally molded body made of FRP. In this example, as shown in FIGS. 5 and 6, the piston 54 has an intake hole 59A extending through the piston 54 in the axial direction, and the intake hole 59A has a spring property from the piston front side. Thus, the intake valve 59 using the valve body 59B to be closed is formed. The piston 54 is accommodated in the inner cavity of the cylinder 56, and forms a cylinder chamber 55 in which air can be compressed. In the compressor 3, when the piston 54 moves backward in the direction of increasing the volume of the cylinder chamber 55, the intake valve 59 is opened to allow air to flow into the cylinder chamber 55 from the intake hole 59A. When moving forward, the intake valve 59 is closed to compress the air in the cylinder chamber 55 and increase the pressure.

  In the cylinder 56, a surge tank 61 having a surge tank chamber 61H connected to the cylinder chamber 55 via a small-diameter compressed air inlet 62 is provided next to the cylinder 56. The surge tank chamber 61H stores the compressed air from the cylinder chamber 55 and suppresses pressure pulsation caused by the piston 54. A check valve can be provided at the compressed air inlet 62, and the intake valve 59 can be formed in the cylinder 56.

  The surge tank 61 includes a nipple-shaped first connection portion 60A connected to the sealing agent container 6 side, a nipple-shaped second connection portion 60B connected to the pressure gauge 18, and a surge tank 61. The relief valve 9 is formed to exhaust the compressed air when the compressed air exceeds the safe pressure p5.

  As shown in FIG. 7A, the relief valve 9 includes a valve passage 64 having one end communicating with the surge tank chamber 61H and an exhaust port 63 provided at the other end, and a compressed air interposed in the valve passage 64. And a relief valve portion 65 for opening the valve flow path 64 and exhausting the gas from the exhaust port 63 when the pressure exceeds the safety pressure p5.

  Specifically, the relief valve 9 includes a tubular housing 66 protruding from the surge tank 61, and a tapered cone-shaped valve seat 66a1 is formed at the lower end side of the center hole 66a. An adjustment screw 67 is screwed into the inner thread portion 66a2 formed on the upper end side, and the valve shaft 68 closes the valve seat portion 66a1 by pressing against the valve seat portion 66a1 in the center hole 66a. Is arranged. A push spring 69 is provided between the adjustment screw 67 and the valve shaft 68 to urge the valve shaft 68 downward. The adjustment screw 67 is formed with a conduction hole 67A having one end communicating with the center hole 66a and the other end opened at the exhaust port 63 on the upper end surface of the adjustment screw 67. Accordingly, the valve flow path 64A is formed by the center hole 66a and the conduction hole 67A, and the relief valve portion 65 is formed by the valve seat portion 66a1 and the valve shaft 68. A nipple-like connection portion 70 for connecting the exhaust pipe is formed at the upper end of the adjustment screw 67.

  The relief valve 9 can lift the valve shaft 68 when the pressure in the surge tank chamber 61H exceeds the safety pressure p5 as shown in FIG. Evacuate from 63. As a result, the compressed air pressure can be controlled to a safety pressure p5 or less, and damage or failure of the device due to overpressure can be prevented. The safety pressure p <b> 5 is adjusted by the advancement / retraction of the adjustment screw 67.

  Next, the sealing agent container 6 includes a container main body 4 and a cap body 5 attached to the mouth portion 4A. The cap body 5 is turned upside down in the first storage space 15A. Stored.

  The container body 4 is preferably a bottle-shaped pressure-resistant container having a pressure resistance of 1 MPa or more. As shown in FIG. 8, the mouth 4A is opened at the tip of the neck 4B. The cap body 5 includes a cylindrical body portion 32, for example, and an attachment recess 33 for screwing the neck portion 4B is formed at the upper end of the body portion 32. Further, for example, a cylindrical boss 34 that protrudes into the mouth 4A of the container body 4 protrudes from the bottom surface of the mounting recess 33, and the container body 4 is disposed on the outer peripheral surface of the boss 34 during storage or the like. An inner lid 30 (indicated by a one-dot chain line) for preventing the inner puncture sealing agent from flowing out is elastically fitted. The inner lid 30 is automatically detached from the boss portion 34 by the pressure of the compressed air from the compressor 3.

  Further, at the lower end side of the body portion 32, a nipple-shaped air intake port portion 7 for sending compressed air from the compressor 3 into the container main body 4, and a puncture sealing agent from the container main body 4 by sending this compressed air. A nipple-like sealing agent / compressed air outlet 35 for sequentially feeding the compressed air is projected. The air inlet 7 and the sealing agent / compressed air outlet 35 are electrically connected to the inside of the container body 4 via first and second flow paths 36 and 37 passing through the body 32, respectively. Yes.

  Next, in this example, the compressor 3 and the air intake port portion 7 are connected via a changeover switch 8. As shown in FIG. 1, the change-over switch 8 changes the inflow port P0 connected to the first connection portion 60A of the compressor 3 to the first outflow port P1 or the second outflow port P2 by moving the valve shaft forward and backward. Switch and conduct. Then, when conducting to the first outflow port P1, the compressed air from the compressor 3 is supplied to the air intake port 7 through the connection hose 75, and the puncture repair agent hose 77 is compressed with the puncture sealing agent. Air can be sent out sequentially to the tire T to repair puncture. Further, when conducting to the second outflow port P2, only compressed air can be sent out from the compressed air filling hose 78. For example, a non-punctured tire whose air pressure has decreased is increased to a standard internal pressure, or a rubber boat. It can be used to inflate and float bags.

  The change-over switch 8 is also housed in the second storage space 15B, like the compressor 3, the relief valve 9, the pressure gauge 18, and the power switch 19, and in the first storage space 15A. The sealing agent container 6 to be accommodated is connected through the connection hose 75 passing through a notch 79 (shown in FIG. 4) provided in the partition body 14.

  In the present invention, the exhaust pipe 11 that exhausts compressed air from the relief valve 9 to the vicinity of the cap body 5 and heats the cap body 5 is connected to the relief valve 9. The exhaust pipe 11 is made of a heat-resistant synthetic resin such as nylon or a metal material such as steel, and one end 11a is connected to the connecting portion 70 (shown in FIG. 7A) and the other end 11b. 4 is opened in the first storage space 15A and in the vicinity of the cap body 5, as shown in FIG. The term “near” means a range where the distance from the cap body 5 is 5 mm or less. The exhaust pipe 11 is preferably opened toward the cap body 5.

  Since the compressed air discharged from the relief valve 9 has a high temperature as high as 100 ° C., the cap body 5 can be sufficiently heated, the sealing agent passing through the internal flow path 37 is heated, and the flow Can be improved. In particular, since the internal flow path 37 has a small diameter, the flow resistance can be effectively reduced by increasing the fluidity by heating, the burden on the compressor 3 can be reduced, and the failure and breakage of the compressor can be suppressed. Therefore, it is possible to contribute to downsizing of the compressor and downsizing of the apparatus, such as the adoption of a smaller and lower output compressor.

  In this example, since the exhaust pipe 11 opens in the first storage space 15A, in addition to the cap body 5, the container body 4 and the sealing agent in the container body 4 can be heated at the same time. Overresistance can be further reduced. The inner hole of the exhaust pipe 11 preferably has an inner diameter of about 2 to 5 mm or a cross-sectional area corresponding to it.

  In addition, since the compressed compressed air discharged from the relief valve 9 is guided to the first storage space 15A, the device components arranged in the second storage space 15B are prevented from being damaged or deformed by the heat of the compressed exhaust air. There is also an advantage that it can be done.

  As mentioned above, although especially preferable embodiment of this invention was explained in full detail, this invention is not limited to embodiment of illustration, It can deform | transform and implement in a various aspect.

BRIEF DESCRIPTION OF THE DRAWINGS It is a diagram which shows notionally one Example of the integrated puncture repair apparatus of the tire of this invention. It is a perspective view of a puncture repair apparatus. It is a disassembled perspective view which shows the state which removed the front case part. It is a front view of the state which removed the front case part. It is a disassembled perspective view which shows a compressor. It is sectional drawing which shows the operating state of a compressor. (A), (B) is sectional drawing which shows a relief valve. It is sectional drawing which shows the principal part of a sealing agent container. It is a graph which shows the relationship between the reading of the pressure gauge of a compressor and the filling time of compressed air in puncture repair. It is a perspective view explaining the conventional puncture repair apparatus.

Explanation of symbols

2 Storage Case 3 Compressor 4 Container Body 4A Port 5 Cap Body 6 Sealing Agent Container 7 Air Intake Port 9 Relief Valve 10 Case Body 11 Exhaust Pipe 14 Partition Body 15A First Storage Space 15B Second Storage Space 35 Sealing Agent・ Compressed air outlet

Claims (2)

In the storage case,
A compressor that generates compressed air,
A relief valve for releasing the overpressure of the compressor,
And an air intake port for sending compressed air from the compressor to the container body, and a puncture seal from the container body by feeding the compressed air to the mouth of the container body containing a sealing agent for sealing a punctured tire Containing at least a sealing agent container to which a cap body having a sealing agent / compressed air outlet port for sequentially removing the agent and compressed air is attached;
An integrated puncture repair device for tires, wherein an exhaust pipe for heating the cap body by exhausting compressed air from the relief valve to the vicinity of the cap body is connected to the relief valve. The storage case includes a vertically flat rectangular box-shaped case main body, and a partition body extending vertically is provided inside the case main body so that the sealing agent container has a cap body below the cap body. And is partitioned into a first storage space on one side in the width direction stored toward the side, and a second storage space on the other side in the width direction in which the compressor and the relief valve are stored,
The tire integrated puncture repair device according to claim 1, wherein the exhaust pipe exhausts compressed air from the relief valve into the first storage space.

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