Patent Publication Number: US-2023140616-A1

Title: Puncture repair liquid unit and puncture repair kit

Description:
RELATED APPLICATIONS 
     This application claims the benefit of foreign priority to Japanese Patent Applications No. JP2021-176795, filed Oct. 28, 2021, which are incorporated by reference in its entirety. 
     FIELD OF THE INVENTION 
     The present disclosure relates to a puncture repair liquid unit and a puncture repair kit. 
     BACKGROUND OF THE INVENITON 
     Japanese Unexamined Patent Application Publication No. 2018-192667 (Patent Document 1) has disclosed a bottle unit for puncture repair. This bottle unit has a bottle container containing puncture repair liquid and a cap attached to the mouth of the bottle container. 
     The cap has a first flow path and a second flow path. The first flow path has a first opening portion open in the bottle container to feed compressed air from a compressor into the bottle container. The second flow path has a second opening portion open in the bottle container to sequentially taking out the puncture repair liquid and the compressed air from the bottle container by feeding compressed air. 
     SUMMARY OF THE INVENTION 
     However, with the bottle unit described above, a portion of the puncture repair liquid tends to harden near the valve of the punctured tire to be repaired, and the compressed air supply path is partially blocked, which causes a problem of requiring a lot of time to supply compressed air to the tire. 
     The present disclosure was made in view of the above, and a primary object thereof is to provide a puncture repair liquid unit capable of reducing the time required to supply compressed air to a punctured tire. 
     The present disclosure is a puncture repair liquid unit including a container containing a puncture repair liquid in a space inside the container, and an extraction cap fixed to a mouth of the container, wherein the extraction cap is provided with a first flow path, a second flow path, and a third flow path, the first flow path extends between a first inlet connectable to an external compressor device for generating compressed air and a first outlet opening in the container, the second flow path extends between a second inlet opening in the container and a second outlet for taking out the puncture repair liquid from the extraction cap to supply to a punctured tire to be repaired, the second inlet communicates with the first outlet via the space of the container, and the third flow path communicates with the first flow path and the second flow path outside the space of the container so that a portion of the compressed air in the first flow path flows into the second flow path. 
     It is possible that the puncture repair liquid unit of the present disclosure shortens the time required to supply compressed air to a punctured tire by adopting the above configuration. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a perspective view illustrating a puncture repair kit of the present embodiment in use. 
         FIG.  2    is a partial cross-sectional view of a puncture repair unit of the present embodiment. 
         FIG.  3    is an exploded and enlarged view of  FIG.  2   . 
         FIG.  4    is a partial cross-sectional view showing the puncture repair liquid unit in which an internal cap is moved into a space inside a container. 
         FIG.  5    is a partial cross-sectional view of the puncture repair liquid unit according to another embodiment of the present disclosure. 
         FIG.  6    is a cross-sectional view of the puncture repair liquid unit after a closure is moved. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     An embodiment of the present disclosure will now be described in conjunction with accompanying drawings. It must be understood that the drawings may contain exaggerations or representations different from the actual dimensional ratios of the structure to aid in understanding the contents of the disclosure. Further, throughout the embodiments, identical or common elements are designated by the same reference signs, and redundant explanations are omitted. Furthermore, the embodiments and the specific configurations represented in the drawings are for the purpose of understanding the contents of the present disclosure, and the present disclosure is not limited to the specific configurations shown in the drawings. 
     Puncture Repair Kit 
       FIG.  1    is a perspective view showing a usage state of a puncture repair kit  1  of the present embodiment. The puncture repair kit  1  of the present embodiment includes a puncture repair liquid unit  2  and a compressor device  3 . 
     In the puncture repair kit  1  of the present embodiment, the puncture repair liquid unit  2  and the compressor device  3  are connected at the time of puncture repair, for example. Further, in the present embodiment, one end of a hose  4  is connected to the puncture repair liquid unit  2 , for example. The other end of the hose  4  is connected to a valve  6  of a punctured tire (i.e., flat tire)  5  to be repaired. 
     Compressor Device 
     The compressor device  3  of the present embodiment is for generating compressed air, and a known one can be employed, for example. In the compressor device  3  of the present embodiment, compressed air (e.g., about 300 to 400 kPa) is generated by the operation of a built-in motor (not shown), for example. The generated compressed air is discharged from a compressed air outlet  7  connectable to the puncture repair liquid unit  2 . 
     Puncture Repair Unit (First Embodiment) 
     The puncture repair liquid unit  2  of the present embodiment has a container  11  and an extraction cap  12 .  FIG.  2    shows a cross-sectional view of the container  11  and the extraction cap  12 . In the present embodiment, the configuration of the puncture repair liquid unit  2  is described in a reference posture in which a mouth  16  of the container  11  faces downward. 
     Container 
     The container  11  of the present embodiment contains puncture repair liquid  14  in a space  13  inside the container  11 . The container  11  of the present embodiment is configured to include a body portion  15  and the mouth  16  as in the above-mentioned Patent Document 1. 
     The body portion  15  of the present embodiment is formed in a cylindrical shape. The mouth  16  of the present embodiment protrudes from the end portion (lower end) of the body portion  15 . The outer peripheral surface of the mouth  16  has an external thread  17 . 
     Extraction Cap 
     The extraction cap  12  of the present embodiment includes a base portion  19 , a recessed portion  20 , a boss portion  21 , and a rib portion  22 . 
     Base Portion and Recessed Portion 
     As shown in  FIG.  1   , the base portion  19  of the present embodiment is formed in a cylindrical shape centered around an axial center (not shown) extending in the vertical direction, for example. As shown in  FIGS.  1  and  2   , the recessed portion  20  of the present embodiment is recessed from one end (upper end) ( 19   t ) of the base portion  19 . The recessed portion  20  of the present embodiment has an inner peripheral surface ( 20   a ) and a bottom surface ( 20   b ), and is formed in a concave columnar shape centered on the above-mentioned axial center (not shown), for example. 
     The inner peripheral surface ( 20   a ) of the recessed portion  20  in the present embodiment is provided with an internal thread  23  into which the external thread  17  of the container  11  can be screwed. By screwing the external thread  17  into this internal thread  23 , the extraction cap  12  is fixed to the mouth  16  of the container  11 . The bottom surface ( 20   b ) of the recessed portion  20  may be provided with a packing material  24  for sealing the end of the mouth  16 . 
     Boss Portion 
     The boss portion  21  of the present embodiment protrudes from the bottom surface ( 20   b ) of the recessed portion  20  toward the container  11  (upward in  FIG.  2   ) in the container  11 . One end (upper end, protruding end) ( 21   t ) of the boss portion  21  in the present embodiment is arranged on the container  11  side (upper side) of the one end ( 19   t ) of the base portion  19 . 
     The boss portion  21  of the present embodiment is arranged substantially in the center of the recessed portion  20 , and is formed in a cylindrical shape centered on an axial center (not shown) extending in the vertical direction, for example. The boss portion  21  of the present embodiment is formed concentrically with the recessed portion  20 , for example. 
       FIG.  3    is an exploded enlarged view of  FIG.  2   . The boss portion  21  of the present embodiment has an outer peripheral surface ( 21   a ) provided with a concave groove  25  recessed inward in the radial direction of the boss portion  21 . The concave groove  25  of the present embodiment is formed continuously in the circumferential direction of the boss portion  21 , for example. 
     Rib Portion 
     As shown in  FIG.  2   , the rib portion  22  of the present embodiment protrudes from the bottom surface ( 20   b ) of the recessed portion  20  toward the container  11  (upward in  FIG.  2   ) in the container  11 . The rib portion  22  of the present embodiment is arranged so as to surround the outer peripheral surface ( 21   a ) (shown in  FIG.  3   ) of the boss portion  21  and is formed in a ring shape (cylindrical shape) centered on an axial center (not shown) extending in the vertical direction, for example. The rib portion  22  of the present embodiment is formed concentrically with the recessed portion  20  and the boss portion  21 , for example. The boss portion  21  and the rib portion  22  may be collectively referred to as a first cylindrical portion. 
     The extraction cap  12  of the present embodiment includes a first flow path  31 , a second flow path  32 , and a third flow path  33 . 
     First Flow Path 
     The first flow path  31  of the present embodiment extends between a first inlet  34  and a first outlet  35 . The first inlet  34  is connectable to the compressed air outlet  7  of the compressor device  3  that generates compressed air (C). The first outlet  35  is open in the container  11 . 
     The first inlet  34  in the present embodiment is formed on a first nozzle portion  39  protruding from an outer peripheral surface ( 19   a ) of the base portion  19 , for example. This first inlet  34  (first nozzle portion  39 ) is connected to the compressed air outlet  7  (shown in  FIG.  1   ) of the compressor device  3 . 
     The first outlet  35  of the present embodiment is formed as a hole opened at the one end (upper end) ( 21   t ) of the boss portion  21 , for example. With the first inlet  34  and the first outlet  35  configured as such, the first flow path  31  of the present embodiment can supply the compressed air (C) generated by the compressor device  3  to the container  11  by allowing the compressed air (C) to flow from the first inlet  34  to the first outlet  35 . 
     The first flow path  31  of the present embodiment includes a first portion  31 A and a second portion  31 B. The first portion  31 A and the second portion  31 B intersect with each other via a first connecting portion  31 C. 
     The first portion  31 A of the present embodiment extends substantially horizontally between the first inlet  34  and the first connecting portion  31 C, for example. The second portion  31 B of the present embodiment extends substantially vertically between the first connecting portion  31 C and the first outlet  35 , for example. By the first portion  31 A and the second portion  31 B configured as such, the first flow path  31  of the present embodiment is formed in an L-shape. Thereby, the first flow path  31  can change (bend) the flow direction of the compressed air (C) supplied from the first inlet  34  at the first connecting portion  31 C to let the compressed air (C) flow to the first outlet  35 , for example. The first portion  31 A and the second portion  31 B of the present embodiment are formed to have substantially the same inner diameter R 1  (shown in  FIG.  3   ) except for the first inlet  34 , for example. 
     Second Flow Path 
     The second flow path  32  of the present embodiment extends between a second inlet  36  opened in the container  11  and a second outlet  37  for taking out the puncture repair liquid  14  from the extraction cap  12  to supply to the punctured tire  5  (shown in  FIG.  1   ) to be repaired. 
     The second inlet  36  of the present embodiment is formed as an annular hole provided between the boss portion  21  and the rib portion  22 . This second inlet  36  communicates with the first outlet  35  via the space  13  of the container  11  when an internal cap  41  described later is moved to the space  13  of the container  11  (that is, the internal cap  41  is removed), for example. 
     The second outlet  37  of the present embodiment is formed in a second nozzle portion  40  protruding from the outer peripheral surface ( 19   a ) of the base portion  19 , for example. The second outlet  37  (second nozzle portion  40 ) is to be connected to the hose  4  (shown in  FIG.  1   ) connected to the punctured tire  5  to be repaired, for example. 
     With the second inlet  36  and the second outlet  37  configured as such, the second flow path  32  of the present embodiment allows the puncture repair liquid  14  contained in the container  11  to flow from the second inlet  36  to the second outlet  37 . As a result, the puncture repair liquid  14  can be supplied to the punctured tire  5  (shown in  FIG.  1   ) to be repaired. 
     The second flow path  32  of the present embodiment includes a third portion  32 A and a fourth portion  32 B. The third portion  32 A and the fourth portion  32 B intersect with each other via a second connecting portion  32 C. 
     The third portion  32 A of the present embodiment extends substantially vertically, for example, between the second inlet  36  and the second connecting portion  32 C. The fourth portion  32 B of the present embodiment extends substantially horizontally, for example, between the second connecting portion  32 C and the second outlet  37 . By the third portion  32 A and the fourth portion  32 B configured as such, the second flow path  32  of the present embodiment is formed in an L-shape. Thereby, the second flow path  32  can change (bend) the flow direction of the puncture repair liquid  14  supplied from the second inlet  36  at the second connecting portion  32 C to let the puncture repair liquid  14  flow to the second outlet  37 , for example. The fourth portion  32 B of the present embodiment is configured to have an inner diameter larger than an inner diameter of the third portion  32 A, for example. 
     Third Flow Path 
     The third flow path  33  of the present embodiment communicates the first flow path  31  and the second flow path  32  outside the space  13  of the container  11  (inside the extraction cap  12  in the present example). The third flow path  33  configured as such allows a part of the compressed air (C) in the first flow path  31  to flow to the second flow path  32  without going through the space  13  of the container  11 . 
     The third flow path  33  of the present embodiment extends substantially horizontally between the first connecting portion  31 C of the first flow path  31  and the second connecting portion  32 C of the second flow path  32 , for example. Therefore, in the present embodiment, the first portion  31 A of the first flow path  31 , the fourth portion  32 B of the second flow path  32 , and the third flow path  33  are arranged to form a straight line. As a result, the third flow path  33  can allow a part of the compressed air (C) in the first flow path  31  to smoothly flow to the second flow path  32 . 
     Internal Cap 
     The first outlet  35  and the second inlet  36  of the present embodiment are separated from the space  13  of the container  11  by the internal cap  41 . The internal cap  41  of the present embodiment is detachably attached to the boss portion  21  and the rib portion  22  of the extraction cap  12 , for example. 
     As shown in  FIG.  3   , the internal cap  41  of the present embodiment includes a first portion  41 A, a second portion  41 B, a third portion  41 C, and a fourth portion  41 D. The internal cap  41  of the present embodiment is formed in a cylindrical shape capable of accommodating the boss portion  21  and the rib portion  22 . 
     The first portion  41 A of the present embodiment is for covering the first outlet  35  (the one end (upper end) ( 21   t ) of the boss portion  21 ). The first portion  41 A is formed in a conical shape, for example. The second portion  41 B of the present embodiment is for covering the one end ( 21   t ) side portion of the outer peripheral surface ( 21   a ) of the boss portion  21 , for example. The second portion  41 B is formed in a cylindrical shape, for example. 
     The third portion  41 C of the present embodiment is for covering the other end side (bottom surface ( 20   b ) side of the recessed portion  20 ) portion of the outer peripheral surface ( 21   a ) of the boss portion  21  and the rib portion  22 . The third portion  41 C is formed in a cylindrical shape, for example. The third portion  41 C of the present embodiment is formed to have an inner diameter larger than an inner diameter of the second portion  41 B. 
     The fourth portion  41 D in the present embodiment extends between the second portion  41 B and the third portion  41 C, for example. The fourth portion  41 D of the present embodiment has an inner diameter gradually and continuously decreasing from the third portion  41 C to the second portion  41 B, and thus is formed in a tapered shape, for example. 
     The internal cap  41  of the present embodiment is provided with a ridge portion  42  protruding inward in a radial direction of the internal cap  41  on an inner peripheral surface ( 41   a ) of the internal cap  41 . The ridge portion  42  of the present embodiment includes a first ridge portion  42 A and a second ridge portion (another ridge portion)  42 B. The first ridge portion  42 A and the second ridge portion  42 B are continuously formed in a circumferential direction of the internal cap  41 . 
     The first ridge portion  42 A of the present embodiment protrudes toward the boss portion  21  (radially inward of the internal cap  41 ). The first ridge portion  42 A in the present embodiment is fitted into the concave groove  25  of the boss portion  21 . This allows the first ridge portion  42 A to secure the internal cap  41  to the boss portion  21  while sealing between the internal cap  41  and the boss portion  21 . It should be noted that the boss portion  21  may be provided with a ridge portion protruding radially outward and the internal cap  41  may be provided with a concave groove recessed radially outward. 
     The second ridge portion  42 B of the present embodiment protrudes toward the rib portion  22  (radially inward of the internal cap  41 ). The second ridge portion  42 B of the present embodiment is in contact with an outer peripheral surface ( 22   a ) of the rib portion  22  over the entire circumference thereof. This allows the second ridge portion  42 B to secure the internal cap  41  to the rib portion  22  while sealing between the internal cap  41  and the rib portion  22 . It should be noted that the second ridge portion may be provided on the outer peripheral surface of the rib portion  22  to be in contact with the inner peripheral surface of the internal cap  41 . It should be noted that the second ridge portion may be provided on the outer peripheral surface ( 22   a ) of the rib portion  22  instead to be in contact with the inner peripheral surface ( 41   a ) of the internal cap  41 , specifically the inner peripheral surface of the third portion  41 C. 
     In this way, the internal cap  41  of the present embodiment is fixed to the boss portion  21  and the rib portion  22 , therefore, the first outlet  35  and the second inlet  36  can be separated from the space  13  of the container  11 . As a result, the internal cap  41  can prevent the puncture repair liquid  14  from leaking out of the container  11  during storage before puncture repair, for example. The first portion  41 A, the second portion  41 B, the third portion  41 C, and the fourth portion  41 D (i.e., the internal cap  41  in the present embodiment) may be collectively referred to as a second cylindrical portion. 
     Workings of Puncture Repair Liquid Unit and Puncture Repair Kit 
     Next, workings of the puncture repair liquid unit  2  and the puncture repair kit  1  of the present embodiment will be described. In the present embodiment, first, as shown in  FIG.  1   , the puncture repair liquid unit  2  and the compressor device  3  are connected, and the valve  6  of the punctured tire  5  and the hose  4  are connected. Next, the compressor device  3  starts generating the compressed air (C) (shown in  FIG.  2   ). This allows the puncture repair liquid unit  2  (the puncture repair kit  1 ) of the present embodiment to supply the compressed air (C) to the first inlet  34  and to flow the compressed air (C) into the first flow path  31  (the first portion  31 A) as shown in  FIG.  2   . 
     The compressed air (C) flowing in the first flow path  31  (the first portion  31 A) splits into the second portion  31 B of the first flow path  31  and the third flow path  33  at the first connecting portion  31 C. The compressed air (C) flowing in the third flow path  33  flows in the second flow path  32  (the fourth portion  32 B) without going through the space  13  of the container  11 . 
     On the other hand, the compressed air (C) flowing into the second portion  31 B of the first flow path  31  flows out of the first outlet  35  into a space  43  enclosed by the internal cap  41 , the boss portion  21 , and the rib portion  22 , causing the internal cap  41  to expand. Due to the expansion of the internal cap  41 , in the present embodiment, the fixation between the internal cap  41  and the boss portion  21  and the rib portion  22  can be released, and the internal cap  41  can be moved away from the first outlet  35  and the second inlet  36  into the space  13  of the container  11 . 
       FIG.  4    is a cross-sectional view showing the puncture repair liquid unit  2  in which the internal cap  41  is moved into the space  13 . In the present embodiment, the compressed air (C) can be supplied to the space  13  inside the container  11  by the movement of the internal cap  41 . Further, it is possible that the first outlet  35  and the second inlet  36  communicate with the space  13  in the present embodiment. 
     In the puncture repair liquid unit  2  (the puncture repair kit  1 ) of the present embodiment, the puncture repair liquid  14  contained in the container  11  can flow from the second inlet  36  to the second outlet  37  (shown in  FIG.  2   ) by supplying the compressed air (C) to the space  13  of the container  11 . Thereby, in the present embodiment, the puncture repair liquid  14  can be taken out from the extraction cap  12  and supplied to the punctured tire  5  (shown in  FIG.  1   ) to be repaired. 
     Further, in the present embodiment, since a part of the compressed air (C) in the first flow path  31  flows to the second flow path  32  via the third flow path  33 , the pressure of the compressed air (C) supplied to the container  11  from the first flow path  31  (the second portion  31 B) can be reduced compared to the conventional unit. As a result, the puncture repair liquid unit  2  (the puncture repair kit  1 ) of the present embodiment can gradually supply the puncture repair liquid  14  to the punctured tire  5  unlike conventional units in which the puncture repair liquid  14  is supplied to the punctured tire  5  (shown in  FIG.  1   ) all at once. 
     As a result of diligent research by the disclosers, it was found that in the conventional unit in which the puncture repair liquid  14  is supplied at once, a part of the puncture repair liquid  14  tends to solidify near the valve  6  (shown in  FIG.  1   ) of the punctured tire  5 , which subsequently causes blocking of a part of the compressed air (C) supply path. This tendency is more pronounced in a high temperature environment (50 to 70° C., for example, including operation and storage environments). Due to such blockage of the supply path, there has been a problem that it takes a lot of time to supply the compressed air (C) to the punctured tire  5 . 
     On the other hand, the puncture repair liquid unit  2  (the puncture repair kit  1 ) of the present embodiment can gradually supply the puncture repair liquid  14  to the punctured tire  5  (shown in  FIG.  1   ), and therefore it is possible that the puncture repair liquid  14  is prevented from hardening near the valve  6  (shown in  FIG.  1   ). As a result, in the present embodiment, the compressed air (C) can be stably supplied to the punctured tire  5 . 
     Further, in the present embodiment, since a part of the compressed air (C) in the first flow path  31  can be flowed to the second flow path  32  via the third flow path  33 , it is possible that the compressed air (C) is supplied together with the puncture repair liquid  14  to the punctured tire  5 . As a result, the puncture repair liquid unit  2  (the puncture repair kit  1 ) of the present embodiment can shorten the supply time of the compressed air (C) to the punctured tire  5 . 
     The first flow path  31  of the present embodiment allows the compressed air (C) supplied from the first inlet  34  (shown in  FIG.  2   ) to change (bend) the flow direction of the compressed air (C) at the first connecting portion  31 C to flow to the first outlet  35 . Further, the third flow path  33  of the present embodiment allows a part of the compressed air (C) in the first flow path  31  to linearly flow to the second flow path  32 . As a result, in the present embodiment, the pressure of the compressed air (C) supplied from the first flow path  31  to the container  11  can be effectively prevented from becoming higher than necessary, therefore, it is possible that the puncture repair liquid  14  is more reliably prevented from being supplied all at once. 
     As shown in  FIG.  3   , it is preferred that the third flow path  33  is formed to have an inner diameter R 3  smaller than the inner diameter R 1  of the first flow path  31 . Thereby, the amount of the compressed air (C) flowing from the third flow path  33  to the second flow path  32  can be prevented from become excessively large, thereby, it is possible that the pressure of the compressed air (C) in the first flow path  31  (the second portion  31 B) is prevented from decreasing more than necessary. As a result, in the present embodiment, for example, during puncture repair in a low temperature environment (for example, -30° C. or lower), the internal cap  41 , which tends to be strongly fixed, can be easily moved, therefore, it is possible that the supply time of the compressed air (C) is shortened. The inner diameter R 3  is the maximum diameter of the third flow path  33  and the inner diameter R 1  is the maximum diameter of the first flow path  31  (excluding the first inlet  34 ) in the present embodiment. 
     It is preferred that a ratio (R 1 /R 3 ) of the inner diameters is set in the range of 1.25 or more and 3.50 or less. By setting the ratio (R 1  / R 3 ) to 1.25 or higher, the pressure of the compressed air (C) supplied to the space  13  inside the container  11  can be prevented from decreasing more than necessary, thereby, the internal cap  41  can be easily moved when repairing a flat tire in a low temperature environment. On the other hand, by setting the ratio (R 1 /R 3 ) to 3.50 or lower, the pressure of the compressed air (C) supplied to the space  13  inside the container  11  can be prevented from becoming larger than necessary, thereby, it is possible that the puncture repair liquid  14  is prevented from solidifying near the valve  6 . From this point of view, the ratio (R 1 /R 3 ) is preferably 1.75 or more, and preferably 2.80 or less. 
     Puncture Repair Liquid Unit (Second Embodiment) 
       FIG.  5    is a cross-sectional view of the puncture repair liquid unit  2  according to another embodiment of the present disclosure. The same configurations as those of the previous embodiment are indicated by the same reference signs, and the description thereof may be omitted. 
     The first outlet  35  of this embodiment is formed as a hole opened in the outer peripheral surface ( 21   a ) of the boss portion  21 . The first outlet  35  of this embodiment is inclined toward the bottom surface ( 20   b ) of the recessed portion  20  as it goes from the first flow path  31  (the second portion  31 B in this embodiment) to the outer peripheral surface ( 21   a ). Further, the first outlet  35  is provided between the one end ( 21   t ) and the concave groove  25  of the boss portion  21 . In this embodiment, one first outlet  35  is provided, but a plurality of the first outlets (not shown) may be provided. 
     The first flow path  31  of this embodiment is provided with a closure  45  that closes (blocks) the first flow path  31  between the first outlet  35  and the first inlet  34  (shown in  FIG.  2   ). The closure  45  is formed in a cylindrical shape centered on an axial center (not shown) extending in the vertical direction, and is press-fitted into the first flow path  31  (the second portion  31 B in this embodiment). 
     Since the closure  45  of this embodiment is arranged between the first outlet  35  and the first inlet  34  (shown in  FIG.  2   ), the closure  45  can close the path between the first outlet  35  and the first inlet  34  during storage before puncture repair, for example. Thereby, the closure  45  can prevent the puncture repair liquid  14  from flowing back into the first flow path  31  even if the internal cap  41  comes off due to mishandling, for example. 
     The closure  45  of this embodiment is moved in a first direction D 1  (the longitudinal direction of the second portion  31 B (vertical direction) in this embodiment) due to the compressed air (C) flowing through the second portion  31 B by the supply of the compressed air (C) to the first inlet  34  at the time of puncture repair. This movement of the closure  45  allows the first inlet  34  (shown in  FIG.  2   ) to communicate with the first outlet  35 . In order to ensure smooth movement of the closure  45  in this way, it is preferred that the ratio (R 1 /R 3 ) of the inner diameters is set in the range of 1.25 or more and 3.50 or less.  FIG.  6    is a cross-sectional view of the puncture repair liquid unit  2  after the closure  45  is moved. 
     Due to the communication between the first inlet  34  (shown in  FIG.  2   ) and the first outlet  35 , the compressed air (C) flowing in the second portion  31 B flows from the first outlet  35  to the space  43  surrounded by the internal cap  41  and the boss portion  21  and the rib portion  22 . Thereby, in this embodiment, it is possible that the internal cap  41  is expanded and moved into the space  13  of the container  11  in the same manner as in the previous embodiment shown in  FIG.  4   . 
     The puncture repair liquid unit  2  (the puncture repair kit  1 ) of this embodiment can supply the compressed air (C) to the space  13  inside the container  11  as in the previous embodiment. Further, it is possible that the first outlet  35  and the second inlet  36  communicate with the space  13 . Thereby, in this embodiment, as in the previous embodiment, the puncture repair liquid  14  can be taken out from the extraction cap  12  to supply to the punctured tire  5  (shown in  FIG.  1   ) to be repaired, therefore, it is possible that the supply time of the compressed air (C) to the punctured tire  5  is shortened. 
     As shown in  FIG.  5   , it is preferred that an inner diameter (R 1   a ) of the first outlet  35  is set smaller than the inner diameter R 1  of the first flow path  31 . This allows the pressure of the compressed air (C) supplied from the first outlet  35  to be increased in this embodiment, therefore, the internal cap  41  is reliably moved to the space  13  of the container  11  and it is possible that the puncture repair liquid  14  is gradually supplied to the punctured tire  5 . 
     It is preferred that a ratio (R 1   a /R 1 ) of the inner diameters is set in the range of 0.2 or more and 0.7 or less. By setting the ratio R 1   a /R 1  to 0.2 or more, it is possible that the puncture repair liquid  14  is gradually supplied to the punctured tire  5  while the internal cap  41  is reliably moved into the space  13  of the container  11 . On the other hand, by setting the ratio (R 1   a /R 1 ) to 0.7 or less, it is possible that the puncture repair liquid  14  is prevented from being supplied to the punctured tire  5  all at once. From such a point of view, the ratio (R 1   a /R 1 ) is preferably 0.3 or more and preferably 0.6 or less. 
     As shown in  FIGS.  5  and  6   , it is preferred that the first flow path  31  is provided with a retaining portion  46  to prevent the closure  45  from moving to the space  13  of the container  11 . Thereby, this prevents the puncture repair liquid unit  2  from having an outlet (not shown) larger than the inner diameter (R 1   a ) in the first flow path  31 , apart from the first outlet  35 . Therefore, in this embodiment, it is possible that the puncture repair liquid  14  is prevented from being supplied to the punctured tire  5  (shown in  FIG.  1   ) at once. 
     While detailed description has been made of the especially preferred embodiments of the present disclosure, the present disclosure can be embodied in various forms without being limited to the illustrated embodiments. 
     EXAMPLES 
     Example A 
     The puncture repair liquid units and the puncture repair kits having the basic structure shown in  FIG.  1    and  FIG.  2    and each having the first flow path, the second flow path, and the third flow path were made by way of test (prototyped) (Examples 1 to 6). For comparison, the puncture repair liquid unit and the puncture repair kit not having the third flow path were made by way of test (Reference). 
     Next, compressed air (350 kPa) was generated by the compressor device and the punctured tires were repaired by using the prototyped puncture repair kits. Then, the presence or absence of the solidification of the puncture repair liquid near the valve, the moving time of the inner cap in a low temperature environment, and the supply time of the compressed air were evaluated. The test methods were as follows. The test results are shown in Table 1. 
     Presence or Absence of Solidification of Puncture Repair Liquid 
     After storing the prototype puncture repair kits in a high temperature environment (60° C.) for 24 hours, the puncture repair liquid was supplied to the puncture tires. After all the puncture repair liquid was supplied, it was visually confirmed whether or not the puncture repair liquid was solidified near the valve. In the results, one without the solidification of the puncture repair liquid is indicated as “No” and ones with the solidification of the puncture repair liquid are indicated as “Yes”. 
     Moving Time of Inner Cap 
     After storing the prototyped puncture repair kits in a low temperature environment (-40° C.) for 24 hours, compressed air was generated by the compressor device, and the time (duration) until the inner cap was moved into the space of the container was measured for each prototyped kit. The results are graded as follows. 
     Excellent: moved within 1 minute   Good: moved in 1 to 3 minutes   Fair: moved in 3 to 5 minutes   

     Supply Time of Compressed Air 
     After the prototype puncture repair kits were stored in a high temperature environment (60° C.) for 24 hours, the time (duration) from the beginning of the supply of the puncture repair liquid to the punctured tire until the punctured tire was inflated to the predetermined internal pressure was measured for each prototype kit. The results are indicated by an index based on Reference being 100, wherein the smaller numerical value is better.   
     
       
         
          TABLE 1
           
               
               
               
               
               
               
               
               
             
               
                   
                 Ref. 
                 Ex.1 
                 Ex.2 
                 Ex.3 
                 Ex.4 
                 Ex.5 
                 Ex.6 
               
             
            
               
                 Presence or Absence of Third flow path 
                 Absence 
                 Presence 
                 Presence 
                 Presence 
                 Presence 
                 Presence 
                 Presence 
               
               
                 Inner diameter R1 of First flow path [mm] 
                 3.5 
                 3.5 
                 3.5 
                 3.5 
                 3.5 
                 3.5 
                 3.5 
               
               
                 Inner diameter R3 of Third flow path [mm] 
                 - 
                 0.5 
                 1.0 
                 2.0 
                 2.8 
                 3.5 
                 4.0 
               
               
                 Ratio (R1/R3) 
                 - 
                 7.00 
                 3.50 
                 1.75 
                 1.25 
                 1.00 
                 0.88 
               
               
                 Presence or Absence of Solidification of Puncture repair liquid 
                 Presence 
                 Absence 
                 Absence 
                 Absence 
                 Absence 
                 Absence 
                 Absence 
               
               
                 Moving time of Internal cap 
                 Excellent 
                 Excellent 
                 Excellent 
                 Excellent 
                 Excellent 
                 Good 
                 Fair 
               
               
                 Supply time of Compressed air [index] 
                 100 
                 90 
                 80 
                 75 
                 79 
                 82 
                 87 
               
            
           
         
       
     
     From the test results, it was confirmed that the puncture repair liquid can be prevented from solidifying near the valve and thus the supply time of the compressed air to the punctured tires can be shortened in the Examples compared to the Reference. Further, it was confirmed that the moving time of the inner cap under the low temperature environment can be shortened in Examples 2 to 4 in which the ratio (R 1 /R 3 ) of the inner diameter R 3  of the third flow path and the inner diameter R 1  of the first flow path was within the preferred range compared to Examples 1, 5, and 6 in which the ratio (R 1 /R 3 ) was out of the preferred range. 
     Example B 
     The puncture repair liquid units and the puncture repair kits having the basic structure shown in  FIG.  1    and  FIG.  5    and each having the first flow path, the second flow path, the third flow path, and the closure were made by way of test (prototyped) (Examples 7 to 12). Next, compressed air (350 kPa) was generated by the compressor device and the punctured tires were repaired by using the prototyped puncture repair kits. Then, the presence or absence of the solidification of the puncture repair liquid near the valve, and the moving time of the closure in a low temperature environment were evaluated. The test methods were as follows except for the presence or absence of the solidification of the puncture repair liquid near the valve. The test results are shown in Table 2. 
     Moving Time of Closure 
     After the prototype puncture repair kits were stored in a low temperature environment (-40° C.) for 24 hours, the moving time of the closure was measured from the beginning of the generation of the compressed air by the compressor device until the first inlet communicates with the first outlet. The results are graded as follows. 
     Excellent: moved within 1 minute   Good: moved in 1 to 3 minutes   
  
     
       
         
          TABLE 2
           
               
               
               
               
               
               
               
             
               
                   
                 Ex.7 
                 Ex.8 
                 Ex.9 
                 Ex.10 
                 Ex.11 
                 Ex.12 
               
             
            
               
                 Inner diameter R1 of First flow path [mm] 
                 3.5 
                 3.5 
                 3.5 
                 3.5 
                 3.5 
                 3.5 
               
               
                 Inner diameter R3 of Third flow path [mm] 
                 0.5 
                 1.0 
                 2.0 
                 2.8 
                 3.5 
                 4.0 
               
               
                 Ratio (R1/R3) 
                 7.00 
                 3.50 
                 1.75 
                 1.25 
                 1.00 
                 0.88 
               
               
                 Presence or Absence of Solidification of Puncture repair liquid 
                 Absence 
                 Absence 
                 Absence 
                 Absence 
                 Absence 
                 Absence 
               
               
                 Moving time of Closure 
                 Excellent 
                 Excellent 
                 Excellent 
                 Excellent 
                 Good 
                 Good 
               
               
                 Supply time of Compressed air [index] 
                 90 
                 80 
                 75 
                 79 
                 82 
                 87 
               
            
           
         
       
     
     From the test results, it was confirmed that the puncture repair liquid can be prevented from solidifying near the valve and thus the supply time of the compressed air to the punctured tires can be shortened in Examples 7 to 12 similarly to Examples 1 to 6 of Table 1. Further, it was confirmed that the moving time of the closure under the low temperature environment can be shortened in Examples 8 to 10 in which the ratio (R 1 /R 3 ) of the inner diameter R 3  of the third flow path and the inner diameter R 1  of the first flow path was within the preferred range compared to Examples 11 and 12 in which the ratio (R 1 /R 3 ) was out of the preferred range. 
     Statement of Disclosure 
     The present disclosure includes the following aspects. 
     Present Disclosure 1 
     A puncture repair liquid unit including:
     a container containing a puncture repair liquid in a space inside the container; and   an extraction cap fixed to a mouth of the container,   wherein the extraction cap is provided with a first flow path, a second flow path, and a third flow path,   the first flow path extends between a first inlet connectable to an external compressor device for generating compressed air and a first outlet opening in the container,   the second flow path extends between a second inlet opening in the container and a second outlet for taking out the puncture repair liquid from the extraction cap to supply to a punctured tire to be repaired,   the second inlet communicates with the first outlet via the space of the container, and   the third flow path communicates with the first flow path and the second flow path outside the space of the container so that a portion of the compressed air in the first flow path flows into the second flow path.   

     Present Disclosure 2 
     The puncture repair liquid unit according to present disclosure 1, wherein the third flow path has an inner diameter (R 3 ) smaller than an inner diameter (R 1 ) of the first flow path. 
     Present Disclosure 3 
     The puncture repair liquid unit according to present disclosure 2, wherein a ratio (R 1 /R 3 ) of the inner diameter (R 1 ) of the first flow path to the inner diameter (R 3 ) of the third flow path is 1.25 or higher and 3.50 or lower. 
     Present Disclosure 4 
     The puncture repair liquid unit according to any one of present disclosures 1 to 3 further comprising an internal cap for separating the first outlet and the second inlet from the space of the container, wherein 
     the first outlet and the second inlet communicate with the space when the internal cap is moved into the space of the container by the compressed air supplied to the first inlet. 
      Present Disclosure 5 
     The puncture repair liquid unit according to present disclosure 4, wherein 
     the first flow path is provided with a closure for closing the first flow path between the first outlet and the first inlet, and   the first inlet and the first outlet communicate with each other when the closure is moved in a first direction toward the first outlet to pass the first outlet by the compressed air supplied to the first inlet.   

     Present Disclosure 6 
     A puncture repair kit including the puncture repair liquid unit according to any one of present disclosures 1 to 5 and 7 to 20 and a compressor device. 
     Present Disclosure 7 
     The puncture repair liquid unit according to claim  2 , wherein the ratio (R 1 /R 3 ) of the inner diameter (R 1 ) of the first flow path to the inner diameter (R 3 ) of the third flow path is 1.75 or higher and 2.80 or lower. 
     Present Disclosure 8 
     The puncture repair liquid unit according to present disclosure 4, wherein 
     the extraction cap includes a first cylindrical portion protruding in a direction from the mouth to further inside of the container,   the extraction cap includes a second cylindrical portion for covering the first cylindrical portion,   the first inlet and the second inlet are provided in the first cylindrical portion,   the first cylindrical portion has an outer peripheral surface provided with one of a concave groove and a ridge portion extending continuously in a circumferential direction of the first cylindrical portion in a ring shape,   the second cylindrical portion has an inner peripheral surface provided with the other of the concave groove and the ridge portion extending continuously in a circumferential direction of the second cylindrical portion in a ring shape, and   the one and the other of the concave groove and the ridge portion are detachably fitted with each other before the compressed air is supplied to the first inlet.   

     Present Disclosure 9 
     The puncture repair liquid unit according to present disclosure 8, wherein 
     the one of the concave groove and the ridge portion is provided in the first cylindrical portion between the first outlet and the second inlet, and   the first outlet opens in a space surrounded by the first cylindrical portion and the second cylindrical portion with the one and the other of the concave groove and the ridge portion being fitted with each other.   

     Present Disclosure 10 
     The puncture repair liquid unit according to present disclosure 9, wherein 
     one of the outer peripheral surface of the first cylindrical portion and the inner peripheral surface of the second cylindrical portion is provided with another ridge portion extending continuously in the circumferential direction in a ring shape,   said another ridge portion is in contact with the other of the outer peripheral surface of the first cylindrical portion and the inner peripheral portion of the second cylindrical portion over the entire circumference thereof, and   the second inlet is arranged between the one of the concave groove and the ridge portion and said another ridge portion.   

     Present Disclosure 11 
     The puncture repair liquid unit according to present disclosure 1, wherein 
     the first flow path has a first portion and a second portion,   the first portion includes the first inlet and extends linearly,   the second portion includes the first outlet and extends linearly, and   the first portion and the second portion are connected via a first connecting portion in an L-shape.   

     Present Disclosure 12 
     The puncture repair liquid unit according to present disclosure 11, wherein 
     the second flow path has a third portion and a fourth portion,   the third portion includes the second inlet and extends linearly,   the fourth portion includes the second outlet and extends linearly, and   the third portion and the fourth portion are connected via a second connecting portion in an L-shape.   

     Present Disclosure 13 
     The puncture repair liquid unit according to present disclosure 12, wherein 
     the third flow path communicate with the first portion and the fourth portion, and   the first portion, the third flow path, and the fourth portion are arranged to form a single liner line.   

      Present Disclosure 14 
     The puncture repair liquid unit according to present disclosure 9, wherein the first outlet is formed at a protruding end of the first cylindrical portion. 
     Present Disclosure 15 
     The puncture repair liquid unit according to present disclosure 9, wherein 
     the first flow path is provided with a closure for closing the first flow path between the first outlet and the first inlet,   the first inlet and the first outlet communicate with each other when the closure is moved in a first direction toward the first outlet to pass the first outlet by the compressed air supplied to the first inlet, and   the first outlet is formed as a through hole penetrating between an inner peripheral surface and the outer peripheral surface of the first cylindrical portion and arranged between a protruding end of the first cylindrical portion and the one of the concave groove and the ridge portion.   

     Present Disclosure 16 
     The puncture repair liquid unit according to present disclosure 15, wherein the first outlet is inclined in a direction away from the protruding end as it goes radially outward. 
     Present Disclosure 17 
     The puncture repair liquid unit according to present disclosure 15, wherein the first cylindrical portion is provided with a plurality of the first outlets. 
     Present Disclosure 18 
     The puncture repair liquid unit according to present disclosure 15, wherein the first outlet has an inner diameter (R 1   a ) smaller than an inner diameter (R 1 ) of the first flow path. 
     Present Disclosure 19 
     The puncture repair liquid unit according to present disclosure 18, wherein a ratio (R 1   a /R 1 ) of the inner diameter (R 1   a ) of the first outlet to the inner diameter (R 1 ) of the first flow path is 0.2 or higher and 0.7 or lower. 
     Present Disclosure 20 
     The puncture repair liquid unit according to present disclosure 15, wherein 
     the first cylindrical portion is provided with a retaining portion for stopping the movement of the closure, and   the retaining portion is arranged on the protruding end side with respect to the first outlet.   

     DESCRIPTION OF THE REFERENCE SIGNS 
     
       
         
           
               
               
            
               
                 1 
                 puncture repair kit 
               
               
                 2 
                 puncture repair liquid unit 
               
               
                 3 
                 compressor device 
               
               
                 5 
                 punctured tire 
               
               
                 11 
                 container 
               
               
                 12 
                 extraction cap 
               
               
                 14 
                 puncture repair liquid 
               
               
                 31 
                 first flow path 
               
               
                 32 
                 second flow path 
               
               
                 33 
                 third flow path