JP2010023244A - Lid unit for sealant container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the backflow of a puncture sealant and make possible to reuse the members, such as a hose and compressor, in the upstream side than the lid unit. <P>SOLUTION: The lid unit is equipped with a lid unit body 31 that has an air flow path 33 that delivers the compressed air from a compressor 3 through an air intake port 7 to a sealant container 4 and a sealant-compressed air take-out flow path 34 that takes out the puncture sealant and compressed air from the sealant container 4 to the tire side. The air flow path 33 consists of a horizontal air flow path part 33A that extends horizontally from the air intake port 7 and a vertical air flow path part 33B that connects with the horizontal air flow path part at an intersection Q and extends up to an upper opening part 36 of the air flow path, and a backflow prevention means 40 is provided at the vertical air flow path part 33B. The backflow prevention means 40 consists of a valve seat 45 narrowed in the diameter, a sphere valve 46 that is movably inserted above the seat 45 and in the air flow path part 33B, and an engaging pin 47 that prevents the sphere valve 46 from shooting out from the upper opening part 36 of the air flow path. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lid member for a sealing agent container used in a tire puncture emergency repair device for urgently repairing puncture by sequentially injecting a puncture sealing agent and high-pressure air into a punctured tire.

  As a lid unit for a sealing agent container used in the tire puncture emergency repair device, for example, one disclosed in Patent Document 1 is known. As shown in FIG. 11, the lid unit a includes a lid unit body c having a mounting recess c1 for inserting and fixing the neck b1 of the sealing agent container b. The lid unit body c is compressed by a compressor d. An air flow path e for sending air into the sealing agent container b from the air intake port e1, and a sealing agent / compression for taking out the puncture sealing agent and compressed air from the sealing agent container b to the tire T side by feeding the compressed air. And an air extraction channel f.

  A cylindrical boss portion g rises on the bottom surface c1a of the mounting recess c1, and an air channel upper opening e2 in which the upper end of the air channel e opens on the upper surface side of the boss portion g. The sealing agent / compressed air take-out flow path f has an opening f2 at which the upper end of the sealant / compressed air take-out flow path f opens. Thus, by providing the sealing agent / compressed air take-out channel upper opening f2 at a position higher than the bottom surface c1a, the sealing agent / compressed air take-out channel upper opening f2 is sealed. A storage space h (shown by hatching) for retaining impurities contained in the sealing agent when the agent is discharged can be formed. The impurities include a creamy aggregate formed by agglomerating the rubber component of the puncture sealant during storage, and when the aggregate is discharged from the sealant container b, the sealing agent / compressed air is used. Clogging occurs in the take-out flow path f, the hose i1, or the tire valve, causing a problem that normal puncture repair cannot be performed.

  In addition, the code | symbol k in a figure is a cap fitted by the said boss | hub part g, and when not in use, the said air flow path e and the sealing agent and compressed air extraction flow path f are closed, and a sealing agent is sealed. At the time of puncture repair, the compressed air from the air flow path e can be removed from the boss portion g, and the compressed air can be sent into the sealing agent container b.

JP-A-2005-319615

  However, the formation of the storage space h causes the following problems. That is, when the filling of the tire with the puncture sealing agent and the compressed air is completed and the compressor d is stopped, the pressure on the compressor side disappears. Therefore, there is a problem that the sealing agent remaining in the storage space h flows back through the air flow path e to the compressor side due to gravity, causing the hose i2 or the compressor d to be contaminated. For this reason, when the used sealant container b is replaced with a new sealant container b, there is a problem that the hose i2 and the compressor d need to be replaced, leading to an increase in cost.

  Therefore, the present invention can easily prevent the backflow of the puncture sealant from the storage space, and allows the reuse of the member upstream of the lid unit when replacing the sealant container after use, resulting in an increase in cost. It is an object of the present invention to provide a lid unit for a sealant container that suppresses the above.

In order to achieve the above object, according to the first aspect of the present invention, there is provided an air flow path in which a sealant container containing a puncture sealant can be attached and compressed air from a compressor is fed into the sealant container from an air intake port. And a lid unit of a sealing agent container comprising a lid unit main body having a sealing agent / compressed air discharge passage for taking out the puncture sealing agent and compressed air from the sealing agent container to the tire side by feeding the compressed air. And
The lid unit main body has a mounting recess for inserting and fixing the neck of the sealing agent container, and a boss protruding from the bottom surface of the mounting recess,
And on the upper surface side of the boss portion, an air channel upper opening in which the upper end of the air channel opens, and a sealing agent / compressed air extraction channel upper opening in which the upper end of the sealing agent / compressed air take-out channel opens. Is provided,
In addition, the air flow path includes a horizontal air flow path portion extending sideways from the air intake port, and a vertical air flow path portion extending to the horizontal air flow path portion at the intersection Q and extending to the air flow path upper opening. And a backflow prevention means for preventing the puncture sealing agent from flowing back to the compressor side is provided in the vertical air flow path portion,
The backflow prevention means includes a valve seat portion with a narrowed inner diameter formed between the intersection point Q and the air channel upper opening,
A ball-shaped spherical valve that is freely inserted in the vertical air flow path portion above and above the valve seat portion so as to freely move up and down, and can open and close the valve seat portion;
It is characterized by comprising a locking pin that attaches to the air flow path upper opening and prevents the spherical valve from jumping out of the air flow path upper opening.

  According to a second aspect of the present invention, the locking pin has a cylindrical pin body having a center hole having a smaller diameter than the spherical valve and fitted into the opening on the air flow path. A notch groove for passing a compressed air flow extending from the center hole to the outer peripheral surface of the pin body is provided at the lower end portion.

  According to a third aspect of the present invention, the boss portion is fitted to an outer surface of the boss portion, and when not in use, the air flow path and the sealing agent / compressed air take-out flow path are closed, and compressed air is discharged from the air flow path. The cap is arranged so that the compressed air can be sent into the sealing agent container by being released from the boss portion by the internal pressure when the air is introduced.

  As described above, the puncture sealing is provided in the vertical air flow path portion of the air flow path portion including the horizontal air flow path portion and the vertical air flow path portion connected to the horizontal air flow path portion. Agent backflow prevention means is provided. The backflow prevention means includes a valve seat portion having a reduced inner diameter in the vertical air flow path portion, and a spherical valve that is loosely inserted in the vertical air flow path portion above the valve seat portion so as to freely move up and down. Yeah.

  Therefore, when the puncture repair is completed and the compressor is stopped, the spherical valve can drop onto the valve seat portion by its own weight, and the valve seat portion can be closed. That is, the backflow of the puncture sealing agent from the storage space can be prevented. When repairing the puncture, the spherical valve is lifted and separated from the valve seat by the pressure of the compressed air from the air intake. As a result, the compressed air can flow and the compressed air can be fed into the sealant container. Note that the spherical valve can be held in the vertical air flow path portion because the spherical valve is prevented from popping out by the locking pin attached to the air flow path upper opening.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram conceptually showing a general-purpose puncture repair device using a lid unit for a sealant container according to the present invention, FIG. 2 is a perspective view of the puncture repair device, and FIG. 3 is a perspective view showing the inside thereof. is there.

  As conceptually shown in FIG. 1, the puncture repair device 1 of the present embodiment includes a storage case 2, a compressor 3 that generates compressed air, a sealing agent container 4 that contains a puncture sealing agent, and the sealing agent container 4. A lid unit 5 that is attached to the neck portion 4 </ b> A, and a changeover switch 8 that is interposed between the air intake port portion 7 provided in the lid unit 5 and the compressor 3 are housed. Further, in the puncture repair device 1, an injection hose 24 dedicated to puncture repair is connected in advance to a sealing agent / compressed air outlet port 28 provided in the lid unit 5, and compressed air is connected to a port P 2 of the changeover switch 8. A filling hose 23 is connected in advance.

  As shown in FIGS. 2 and 3, the storage case 2 has a vertical flat rectangular box shape in which the front and rear of the peripheral frame 2a are closed by a front plate 2b and a rear plate (not shown). The main case 10 is formed by opening one side of the bottom in the width direction (right side in the figure), and the bottom case 12 that is detachably attached to the opening 10A of the main case 10 and closes the opening. The bottom case 12 is guided to be slidable in the width direction by, for example, a guide groove (not shown), and is easily fixed to the main case 10 by a hook 17 (shown in FIG. 3) in the closed state. . The inside of the main case 10 is divided into a first accommodation space 15A that leads to the opening 10A and a second accommodation space 15B adjacent to the first accommodation space 15A by a partition wall 14 that extends vertically.

  Next, as the compressor 3, various commercially available small-sized compressors that are driven by using an automobile battery as a power source can be used. Since the compressor 3 is heavy, the stability of the puncture repair device 1 is enhanced by attaching the compressor 3 below the second accommodation space 15B and lowering the center of gravity. Above the compressor 3, a pressure gauge 18 for measuring the pressure of the compressed air generated by the compressor 3 and a power switch 19 of the compressor 3 are mounted side by side so as to be visible or operable from the front side. As shown in FIG. 3, the power switch 19 and the pressure gauge 18 and the compressor 3 are partitioned by a partition plate 20 and opened by a notch window 22 provided on the side surface of the main case 10. A storage space 21 is formed. Such an arrangement is useful for ensuring a wide display portion J (shown in FIG. 2) for explaining handling on the front surface of the storage case 2. In the storage space 21, a power cord (not shown) that extends from the power switch 19 and can be connected to a cigarette lighter socket of an automobile and the compressed air filling hose 23 are removably stored.

  Next, the sealing agent container 4 is a bottle-shaped pressure-resistant container having a pressure resistance of 1 MPa or more, for example, and the tip of the neck portion 4A is opened. Further, the lid unit 5 is attached to the neck portion 4A, and the sealing agent container 4 is put into and out of the first accommodating space 15A from the opening 10A in an inverted state in which the lid unit 5 is directed downward. Can be stored freely.

  As shown in FIG. 4, the lid unit 5 is attached to a lid unit body 31 having a mounting recess 30 for inserting and fixing the neck portion 4 </ b> A of the sealing agent container 4, and a boss portion 35 of the lid unit body 31. A cap 50;

  The lid unit main body 31 includes an air flow path 33 through which compressed air from the compressor 3 is fed into the sealing agent container 4 from an air intake port 7 and the puncture sealing agent from the sealing agent container 4 by feeding in the compressed air. And a sealing agent / compressed air take-out flow path 34 for taking out the compressed air and the compressed air sequentially to the tire side.

  Specifically, the lid unit main body 31 includes, for example, an attachment recess 30 in which the neck portion 4A is screwed at the upper end of a cylindrical barrel portion 32, and the air intake port on the lower end side of the barrel portion 32. The part 7 and the sealing agent / compressed air outlet part 28 are each formed in a hose joint shape. Further, for example, a cylindrical boss portion 35 is raised on the bottom surface of the mounting recess 30, and on the upper surface side of the boss portion 35, an air channel upper opening portion 36 where an upper end of the air channel 33 is opened, A sealing agent / compressed air take-out flow path upper opening 37 is formed in which the upper end of the sealing agent / compressed air take-out flow path 34 is opened.

  In this example, the upper surface 35S of the boss portion 35 has a cylindrical tube portion 38 that rises from the upper surface 35S, for example, along the center line of the boss portion 35, and the sealing agent / A compressed air take-out channel upper opening 37 is formed. An annular groove 39 surrounding the cylindrical portion 38 is formed in the upper surface 35S of the boss portion 35, and the air flow path upper opening 36 is opened at the bottom surface of the annular groove 39. Accordingly, a storage space h for storing impurities of the puncture sealing agent is formed below the upper end of the cylindrical portion 38. The annular groove 39 serves to increase the volume of the storage space h. Note that the air channel upper opening 36 can be formed in the upper surface 35S without providing the annular groove 39.

  Next, the air flow path 33 is connected to the horizontal air flow path portion 33A extending from the air intake port 7 in the horizontal direction and to the horizontal air flow path portion 33A at the intersection Q to the air flow path upper opening 36. It consists of a vertical air flow path portion 33B extending upward. And the backflow prevention means 40 which prevents that a puncture sealing agent flows backward to the compressor side is provided in this vertical air flow path part 33B. In this example, the horizontal air flow path portion 33A has the air intake port portion 7 formed at one end, and an open / close port 42 that can be opened and closed by attaching and detaching the open / close cap 41 at the other end. In addition, a venturi portion 43 with a narrowed inner diameter of the flow passage is formed at the center side of the horizontal air flow passage portion 33A, and the intersection point Q is provided in the vicinity of the venturi portion 43 and on the downstream side.

  As shown in FIG. 5, the backflow prevention means 40 is formed between the intersection point Q and the air flow path upper opening 36 and has a valve seat 45 with a narrowed inner diameter of the flow path. A ball-shaped metal spherical valve 46 is provided, which is loosely inserted in the upper and vertical air flow path portion 33B so as to freely move up and down. The valve seat portion 45 has a conical surface that tapers toward the intersection point Q. Normally, the valve seat portion 45 abuts against the conical surface by the weight of the spherical valve 46 to close the valve seat portion 45. On the other hand, when compressed air is supplied from the air intake 7 (in the case of puncture repair), the spherical valve 46 is lifted by the pressure of this compressed air, as shown by the alternate long and short dash line, The valve seat part 45 can be opened by separating. Accordingly, the outer diameter D1 of the spherical valve 46 is set to be larger than the minimum inner diameter D2 of the valve seat portion 45 and smaller than the inner diameter D3 other than the valve seat portion 45 of the vertical air flow path portion 33B. The In this example, the outer diameter D1 is about 2.0 mm, the minimum inner diameter D2 is about 1.5 mm, and the inner diameter D3 is about 3.0 mm.

  The backflow prevention means 40 includes a locking pin 47 that is attached to the air flow path upper opening 36 and prevents the spherical valve 46 from jumping out of the air flow path upper opening 36.

  As shown in FIG. 6A, the locking pin 47 has a cylindrical pin body 48 having a central hole 48a having a smaller diameter than the spherical valve 46 and fitted into the air flow path upper opening 36. Have. As shown in FIG. 6B, the pin main body 48 includes a cutout groove 48b for compressed air flow extending from the center hole 48a to the outer peripheral surface of the pin main body 48, as shown in FIG. 6B. Therefore, the locking pin 47 can prevent the spherical valve 46 from popping out by its lower end, and the compressed air can flow into the center hole 48a by the notch groove 48b. For this flow, it is preferable to form three or more notch grooves 48b. The upper end of the center hole 48a is opened by a notch 48c provided at the upper end of the pin body 48 in this example.

  Note that the upper end of the locking pin 47 preferably protrudes above the upper surface 35S of the boss portion 35. This facilitates the attachment of the locking pin 47 to the air flow path upper opening 36. As the locking pin 47, if it is possible to prevent the spherical valve 46 from popping out and allow compressed air to flow therethrough, for example, as shown in FIG. As shown in FIG. 7B, a compressed air flow longitudinal groove extending in the axial direction is provided around the cylinder to be fitted, and is crimped to the air flow path upper opening 36. Various things, such as a U-shaped pin, can be adopted.

  The lid unit 5 is fitted to the outer surface of the boss portion 35, and when not in use, the air flow path 33 and the sealing agent / compressed air take-out flow path 34 are closed so that the puncture sealing agent is used as the sealing agent container 4. A cap 50 is included for sealing inside. The cap 50 is automatically removed from the boss portion 35 due to the internal pressure when compressed air flows from the air flow path 33 in puncture repair, and the compressed air can be fed into the sealant container 4. .

  The cap 50 is made of an elastically deformable synthetic resin material such as polyethylene or polypropylene, for example, and as shown in an enlarged view in FIG. 8, a cylindrical body 51 fitted on the outer surface of the boss 35. And a top plate portion 52 for closing the upper end of the trunk portion 51. The top plate portion 52 has a substantially hemispherical shape having an arc portion 52A connected to the trunk portion 51 by an arc having a curvature radius R, and the curvature radius R is set to 0.3 of the inner diameter D of the trunk portion 51. It is set in the range of ~ 0.5 times. The radius of curvature R is the radius of curvature of the inner surface of the arc portion 52A, and when R = 0.5 × D, the top plate portion 52 is substantially a hemispherical shape consisting only of the arc portion 52A. Formed. When 0.3 × D ≦ R <0.5 × D, the top plate portion 52 is a flat smooth portion that forms the arc portion 52A and the top portion of the top plate portion 52 as illustrated in FIG. 52B. Further, the top plate portion 52 is formed with a pin-like plug portion 53 that projects from the inner surface thereof and closes the sealing agent / compressed air take-out flow passage upper opening 37. Further, a flange portion 50A for reinforcement extending continuously in the circumferential direction is provided on the lower end portion and the outer peripheral surface of the body portion 51 so as to protrude.

  When the cap 50 is filled with compressed air, the cap 50 is deformed to spread laterally from the arc portion 52A of the top plate portion 52 to the upper end side of the trunk portion 51, as shown in FIG. Since the lower end side of the trunk portion 51 is reinforced and tagged by the flange portion 50A, it is difficult to spread sideways. Therefore, even when the cap 50 creeps during storage and the tightening force (insertion force) between the cap 50 and the boss portion 35 is reduced, the contact state between the cap 50 and the boss portion 35 is changed to the lower end of the body portion 51. Can be maintained on the side. As a result, leakage of compressed air from between the cap 50 and the boss portion 35 can be suppressed. If leakage occurs, the internal pressure of the sealing agent container 4 increases due to the compressed air that has leaked, so that the difference from the internal pressure in the cap 50 is reduced, and the cap 50 is unlikely to be detached from the boss portion 35. Occurs. In the case of R <0.3 × D or R> 0.5 × D, it is difficult to deform from the arc portion 52A to the upper end side of the body portion 51, and the effect of suppressing compressed air leakage can be effectively exhibited. It becomes difficult.

  Next, the changeover switch 8 is interposed between the compressor 3 and the air intake 7. As shown in FIG. 1, the change-over switch 8 can switch the inflow port P0 connected to the compressor 3 to the first outflow port P1 or the second outflow port P2 by the forward and backward movement of the valve shaft 8A. And when it conduct | electrically_connects to the 1st outflow port P1, compressed air can be supplied to the air intake part 7, and a puncture sealing agent and compressed air are sent out one by one from the injection hose 24 only for puncture repair, and tire T You can repair the punk. In addition, when conducting to the second outflow port P2, only compressed air can be sent out from the hose 23 dedicated to filling compressed air. For example, the non-punctured tire T0 with reduced air pressure can be increased to the standard internal pressure Alternatively, it can be used to inflate rubber boats or float bags.

  Further, since the backflow prevention means 40 is arranged in the air flow path 33, when the puncture repair is completed and the compressor 3 is stopped, the puncture sealing agent accumulated in the storage space h flows back from the air flow path 33. Thus, it is possible to prevent the member disposed upstream of the lid unit 5 from being soiled. Therefore, when the used sealant container 4 is replaced with a new sealant container 4, it is not necessary to replace a member on the upstream side of the lid unit 5, and the replacement cost can be reduced.

  In particular, as in the present embodiment, the integrated puncture repair device 1 in which the compressor 3, the changeover switch 8, the lid unit 5, the sealing agent container 4, and various hoses are connected in advance and are stored compactly in one storage case 2. In this case, there is a possibility that the leaked puncture sealing agent may also enter the changeover switch 8 or the compressor 3, so that the merit of the backflow prevention of the present application is very high.

  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.

It is a diagram which shows notionally the puncture repair apparatus using the cover unit of this invention. It is a perspective view of a puncture repair apparatus. It is a perspective view which shows the inside of a puncture repair apparatus. It is sectional drawing which shows a cover unit. It is sectional drawing which shows an air flow path with a backflow prevention means. (A) is sectional drawing which shows a locking pin, (B) is a fragmentary perspective view which shows the notch groove. (A), (B) is drawing which shows the other Example of a locking pin. It is sectional drawing which expands and shows a cap. It is sectional drawing which shows the other Example of a cap. It is sectional drawing which shows the deformation | transformation state by the compressed air of a cap. It is sectional drawing which shows the conventional lid unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Compressor 4 Sealing agent container 4A Neck part 5 Lid unit 7 Air intake part 30 Mounting recessed part 31 Lid unit main body 33 Air flow path 33A Horizontal air flow path part 33B Vertical air flow path part 34 Sealing agent and compressed air extraction flow path 35 Boss portion 35S Upper surface 36 Air flow path upper opening 37 Sealing agent / compressed air take-off flow path upper opening 40 Backflow prevention means 45 Valve seat portion 46 Spherical valve 47 Locking pin 48 Pin body 48a Center hole 48b Notch groove 50 Cap

Claims (3)

An air flow path through which a sealant container containing a puncture sealant can be attached and compressed air from a compressor is sent to the sealant container from an air intake port, and the puncture sealant from the sealant container by feeding the compressed air And a sealing agent container lid unit comprising a lid unit main body having a sealing agent / compressed air take-out flow path for taking out the compressed air and the compressed air,
The lid unit main body has a mounting recess for inserting and fixing the neck of the sealing agent container, and a boss protruding from the bottom surface of the mounting recess,
And on the upper surface side of the boss portion, an air channel upper opening in which the upper end of the air channel opens, and a sealing agent / compressed air extraction channel upper opening in which the upper end of the sealing agent / compressed air take-out channel opens. Is provided,
In addition, the air flow path includes a horizontal air flow path portion extending sideways from the air intake port, and a vertical air flow path portion extending to the horizontal air flow path portion at the intersection Q and extending to the air flow path upper opening. And a backflow prevention means for preventing the puncture sealing agent from flowing back to the compressor side is provided in the vertical air flow path portion,
The backflow prevention means includes a valve seat portion with a narrowed inner diameter formed between the intersection point Q and the air channel upper opening,
A ball-shaped spherical valve that is freely inserted in the vertical air flow path portion above and above the valve seat portion so as to freely move up and down, and can open and close the valve seat portion;
A lid unit for a sealing agent container, comprising a locking pin that is attached to the air flow path upper opening and prevents the spherical valve from popping out of the air flow path upper opening.   The locking pin has a center hole having a smaller diameter than the spherical valve and a cylindrical pin body that is fitted into the opening on the air flow path, and the center hole is formed at a lower end portion of the pin body. The lid unit for a sealing agent container according to claim 1, wherein a notch groove for passing a compressed air extending from the pin body to the outer peripheral surface of the pin body is provided.   The boss portion is fitted to the outer surface of the boss portion, and when not in use, closes the air flow path and the sealing agent / compressed air take-out flow path, and when compressed air is introduced from the air flow path, The cap unit for a sealing agent container according to claim 1 or 2, wherein a cap capable of removing the compressed air from the boss portion and feeding the compressed air into the sealing agent container is disposed.

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