JP3132138U - Tire air valve device - Google Patents

Abstract

The present invention enables air to be injected without using an adapter regardless of the difference in structure depending on the valve type such as English, French, and American.
An injection valve is inserted into a valve cylinder attached to a tube, and a fixing screw is screwed into the valve cylinder to fix the injection valve, and air is injected into the tube by a pump connected to the injection port. An air valve device for a tire having a configuration that has an inner convex portion 15 formed in a step shape and an annular shape on the inner peripheral surface of the valve barrel portion 12, and engages with the inner convex portion from the inlet side. In addition, the outer convex portion 18 formed in a stepped and annular shape is provided on the outer peripheral surface of the injection valve, and the flange portion 12 is provided closer to the injection port than the outer convex portion of the injection valve. A set screw 25 is screwed into the valve cylinder part to tighten the collar part, and the outer convex part 18 is brought into pressure contact with the inner convex part 15 directly or with a seal member interposed therebetween. The distance B from the buttocks of the injection valve to the outer convex portion is larger than the distance A from the opening end portion of the injection valve to the inner convex portion. To.
[Selection] Figure 2

Description

  In the present invention, an injection valve is inserted into a valve barrel portion attached to a tube, and a set screw that exposes the injection port is screwed into the valve barrel portion, and the tube is fixed by a pump connected to the injection port. TECHNICAL FIELD The present invention relates to a tire air valve device having a configuration for injecting air into a kind.

  For example, tire air valve devices such as bicycles have English, French, and American valves, and the structure differs depending on the valve type. Therefore, there is an inconvenience that an inflator cannot be used as it is. is there. Adapters have been developed to address this issue. For example, the invention of Japanese Patent Application Laid-Open No. 2001-108123 was made in order to apply an airtight bicycle valve suitable for reducing rolling resistance to a tire for a battery-assisted bicycle, and an English valve pump can be used. it can.

  However, since the adapter is attached to and detached from a different type of valve, it is likely to be lost, and if it is lost, no air can be injected at all. Of course, if the adapter type is different, it is impossible to inject air, and it is easily affected by the quality of the installation. In other words, since the adapter is attached between the air valve and the pump by screwing or the like, air is not easily injected due to insufficient screwing or loosening, or contact with the internal injection valve, or air leakage is likely to occur. There is such a problem.

JP 2001-108123 A JP 2002-137612 A

  The present invention has been made by paying attention to the above points, and the problem is that air can be injected without using an adapter regardless of the structure of the valve type such as English, French or American. Is to do. Another object of the present invention is to enable air to be injected by an inflator for an English valve to a valve structure such as an English type, a French type, or an American type.

  In order to solve the above-mentioned problems, the present invention inserts an injection valve into a valve cylinder part attached to tubes, and fixes the injection valve by screwing a set screw exposing the injection port into the valve cylinder part. In the tire air valve device having a configuration in which air is injected into the tubes by a pump connected to the inlet, the inner peripheral surface of the valve tube portion has an inwardly convex portion formed in a step shape and a substantially annular shape. The outer convex portion of the injection valve has an outer convex portion formed on the outer peripheral surface in a stepped and substantially annular shape so as to be engaged with the inner convex portion from the inlet side, and the outer convex portion of the injection valve It has a flange part provided closer to the inlet, and a set screw is screwed into the valve cylinder part, the flange part is tightened, and the outer convex part is directly connected to the inner convex part, or The distance between the opening end of the valve tube part and the inner convex part is assumed to be in pressure contact with the seal member in between. Also, a configuration in which a large towards the distance B from the flange portion of the injection valve to the outer protrusions, in which took measures that.

  The tire air valve device according to the present invention fixes an injection valve to a valve cylinder portion using a set screw that exposes an injection port of the injection valve. The structure of the injection valve used in the present invention is an injection valve used for the English valve most popular in Japan. That is, a valve structure having a different valve structure such as a French or American style is converted into an English valve structure. The tubes in the present invention include tubes and tubeless tires.

  A tire air valve device according to the present invention has an inner convex portion formed in a step shape and an annular shape inward on an inner peripheral surface of a valve barrel portion, and is engaged with the inner convex portion from the outside. Thus, what has the outer convex part formed in the outer side stepped and substantially cyclic | annular form on the outer peripheral surface of an injection valve is used. In addition to English, there is a valve cylinder part with an inner convex part formed in an inwardly stepped and annular shape, but for a valve part with an existing inner convex part, the structure can be used. it can. When the inner convex portion and the outer convex portion are formed into a completely continuous ring shape, the airtightness of the injection valve inside and outside can be obtained at the pressure contact portion. Each example except FIG. 5 is an example in which airtightness can be obtained at the pressure contact portion.

  An injection valve having an outer convex portion on the outer peripheral surface, which is formed in an outwardly stepped and substantially annular shape, is engaged with the valve cylinder portion having the inner convex portion. When this injection valve is inserted into the valve cylinder part, the outer convex part has a relationship that can engage with the inner convex part of the valve cylinder part. Therefore, when the injection valve is fixed to the valve cylinder portion with the set screw, the screwing positional relationship between the set screw and the valve cylinder portion is set so that the injection valve can be sufficiently pressurized.

  That is, the set screw is screwed into the valve cylinder part, the collar part is tightened, and the outer convex part is brought into pressure contact with the inner convex part directly or with a seal member interposed therebetween. The inside and outside airtightness shall be obtained. Since it is possible to obtain airtightness by pressure contact between the outer and inner protrusions, even when using an English valve that uses insect rubber, the insect rubber is used when the present invention is applied. There is no need.

  In order to obtain the airtightness of the inside and outside of the injection valve at the pressure contact portion, in the present invention, the distance B from the buttocks of the injection valve to the outer convex portion is larger than the distance A from the opening end of the valve tube portion to the inner convex portion. The configuration is larger. By making the distance B greater than the distance A, the injection valve can be sufficiently tightened so that the outer convex portion and the inner convex portion are completely pressed together, and the airtightness of the proposed device is perfect.

  In addition, since the distance B is made larger than the distance A, the set screw can be tightened further to the inlet side than the threaded portion of the valve barrel portion with the threaded portion. It can be configured to have a threaded portion. Retightening usually refers to applying additional tightening force after tightening with the required torque, but the necessary tightening force in the present invention is to fully tighten the injection valve to completely press the outer and inner convex parts. To the extent that it can.

  Since the present invention is configured and operates as described above, air can be injected without using an adapter, regardless of differences in the structure of valves such as English, French, and American. In addition, it has an effect that air can be injected by an inflator for an English-style valve, although the structure differs depending on the valve type such as the French type or the American type.

  Hereinafter, a tire air valve device according to the present invention will be described in more detail with reference to the illustrated embodiment. In each figure, 11 and 11 'have shown tubes, and include both the tube inserted in a tire and a tubeless tire. Reference numeral 12 denotes a valve barrel portion of an American valve attached thereto, reference numeral 12 'denotes a valve barrel portion of an English valve, reference numerals 13 and 13' denote respective open end portions, and reference numerals 14 and 14 'denote respective outer peripheries. The external thread part is shown.

  In the present invention, any type of valve barrel can be used as long as it has an inner convex portion. The illustrated valve cylinder portions 12 and 12 'have inner convex portions 15 and 15' formed inwardly in a stepped and annular shape on the inner peripheral surface thereof. As the steps of the inner protrusions 15 and 15 ′, a shelf-like step (left in FIG. 1) is used as the inner protrusion 15, and a taper step (right in FIG. 1) is used as the inner protrusion 15. Both are applicable to the present invention. A and A ′ indicate the distances from the open end portions 13 and 13 ′ of the valve cylinder portions 12 and 12 ′ to the inner convex portions 15 and 15 ′. It depends on the relationship.

  Three types of injection valves 16, 16 ′, 16 ″ are shown as injection valves to be inserted into the valve cylinders 12, 12 ′. Each injection valve 16, 16 ′, 16 ″ is an injection port 17, 17 ′, 17 ″ opening at the upper end. In addition, outer protrusions 18, 18 ′, 18 ″ formed outwardly in a stepped and annular shape are provided on the outer peripheral surface of the injection valve. Air inlet holes 19, 19 ′, 19 ″ are opened below the outer convex portions 18, 18 ′, 18 ″. Therefore, the upper inlets 17, 17 ′, 17 ″ and the lower air inlet holes 19, 19 ′, 19 ″ are arranged above and below the outer projections 18, 18 ′, 18 ″. ″ Indicates a collar part, and a stopper to be described later is engaged on the upper side. 21 is a floating valve, 22 is a slit at the lower end.

  B, B ′ and B ″ indicate the distances from the flanges 20, 20 ′ and 20 ″ of the injection valves 16, 16 ′ and 16 ″ to the outer protrusions 18, 18 ′ and 18 ″. The dimension is larger than the distance A described above. The injection valves 16, 16 ′, 16 ″ shown in FIG. 1 are typical examples of those used in the present invention, and the dimensions of each part are also rough, so the specific relationship between each part is shown in FIG. Will be explained.

  In order to directly press-contact the outer convex portions 18, 18 ', 18 "to the inner convex portions 15, 15' or press the seal members 23, the flange portions 20, 20 ', 20" are tightened. As a means, set screws 25, 25 ', 25 "are screwed into the above-mentioned valve cylinder parts 12, 12'. Set screws 25, 25 ', 25" are female screw parts screwed into the male screw parts 14, 14'. It has a cap nut shape having 26, 26 ', 26 ", and has an anti-slip 27, 27', 27" such as a knurled portion, a notch portion or a polygonal portion on the outer surface.

  Thus, the pressure contact portion between the inner convex portions 15 and 15 'and the outer convex portions 18, 18' and 18 '' provides the airtightness of the inside and outside of the injection valve. 2 is used for the distinction, and in the description of FIG. 2 and below, a reference without a dash is used, and in some cases, it corresponds to the one with a dash in FIG. It is used in the meaning of a representative example of each component, and has no further meaning.

  Next, a specific example of the present invention will be described with reference to FIG. FIG. 2 shows an example of an English injection valve 16 ′ that uses a seal member 23. By tightening the flange portion 20 from above with a set screw 25, the inner convex portion 15 ′ and the outer convex portion 18 are connected to the seal member 23. Weld with pressure between. Since the distance B from the flange portion 20 to the outer convex portion 18 of the injection valve 16 is larger than the distance A from the opening end portion 13 of the valve cylinder portion 12 to the inner convex portion 15, the set screw 25 is An extra female screw portion 26 that enables further tightening is provided further on the inlet side than the screwed portion with the male screw portion 14 of the valve barrel portion 12. Therefore, even if the stopper 25 is further tightened from the stage of FIG. 2A and the gap 28 is maintained even after being pressurized to the state of FIG. 2B, the gap 28 is still firmly attached, so that in the state of FIG. Can be connected and inflated.

  FIG. 3 shows an example of an English injection valve 16 ′ that does not use the seal member 23. By tightening the flange 20 from above with a set screw 25, the inner convex portion 15 ′ and the outer convex portion 18 are in direct pressure contact. . Further, since the distance B from the flange portion 20 to the outer convex portion 18 of the injection valve 16 is larger than the distance A from the open end portion 13 of the valve cylinder portion 12 to the inner convex portion 15 ′, the stopper Even when 25 is tightened and pressurized, the gap 28 is still maintained.

  FIG. 4 shows the same configuration as that of FIG. 3, but shows an example of a US-style valve cylinder portion 12 in which the distance A from the opening end portion 13 to the inner convex portion 15 ′ is remarkably long. The distance B from the portion 20 to the outer convex portion 18 is also formed long, and the gap 28 is still maintained even when the distance B is set larger than the distance A and the stopper 25 is tightened and pressed. Therefore, in the state of FIG. 3 and FIG. 4, an English valve pump can be connected to the injection valve 16 and air can be introduced.

  FIG. 5 and subsequent figures show examples in which the present invention is applied to a US-type valve cylinder portion 12 having a remarkably long distance A. In the case of FIG. 5A, a step formed near the open end 13 of the valve cylinder 12 is used for the inner convex portion 15 and the seal member 23 is used. The distance B from the flange portion 20 to the outer convex portion 18 is larger, so that a gap 28 is secured between the outer convex portion 18 and the inner convex portion 15. In this example, when the set screw 25 is tightened as shown in FIG. 5B and the inner convex portion 15 and the outer convex portion 18 are pressed, the gap 28 formed between the opening end portion 13 and the flange portion 20 is Since the seal member 23 is disposed, confidentiality is not required at the pressure contact portion between the inner convex portion 15 and the outer convex portion 18.

  The example of FIG. 6 is an example in which a tapered inner convex portion 15 ′ located at a deep position as shown in FIG. 4 is used unlike FIG. 3, and is larger than the distance A from the opening end 13 to the inner convex portion 15 ′. The distance B from the flange portion 20 of the injection valve 16 to the outer convex portion 18 is made larger. In this case, the air injection hole 19 comes to a position lower (inward) than the outer protrusion 18.

  Therefore, also in each example of FIG. 5 and FIG. 6, air can be introduced by connecting an English valve pump to the injection valve 16 in the state shown in the figure.

It is a perspective view which shows the valve cylinder part which comprises the pneumatic valve apparatus for tires which concerns on this invention, an injection valve, several types which a set screw blows, and those combination examples. The example 1 by this invention is shown, A is sectional drawing before clamping, B is sectional drawing after clamping. It is sectional drawing which shows Example 2 by this invention. It is sectional drawing which shows Example 3 by this invention. The example 4 by this invention is shown, A is sectional drawing before clamping, B is sectional drawing after clamping. It is sectional drawing which shows Example 5 by this invention.

Explanation of symbols

11, 11 '
12, 12 '
13, 13 '
14, 14 '
15, 15 '
16, 16 ', 16 "
17, 17 ', 17 "
18, 18 ', 18 "
19, 19 ', 19 "
20, 20 ', 20 "
21 Floating valve 22 Slit 23 Seal member 25, 25 ′, 25 ″
26, 26 ', 26 "
27, 27 ', 27 "
28 Clearance

Claims (2)

Insert the injection valve into the valve cylinder part attached to the tubes, and screw the set screw that exposes the injection hole into the valve cylinder part to fix the injection valve, and then connect it to the tube with a pump connected to the injection port. A tire air valve device having a structure for injecting air,
On the inner peripheral surface of the valve cylinder part, there is an inner convex part formed in a stepped and substantially annular shape, and it is formed in a stepped and substantially annular outer peripheral surface so as to engage with the inner convex part from the inlet side The outer convex portion is provided on the outer periphery of the injection valve, and has a collar portion provided closer to the injection port than the outer convex portion of the injection valve,
The set screw is screwed into the valve cylinder part, the flange part is tightened, and the outer convex part is brought into pressure contact with the inner convex part directly or with a seal member interposed therebetween. An air valve device for a tire having a configuration in which the distance B from the flange portion to the outer convex portion of the injection valve is larger than the distance A from the inner convex portion to the inner convex portion. 2. The tire air valve device according to claim 1, wherein the set screw has an extra female screw portion that enables further tightening on the inlet side further than a screwed portion with the male screw portion of the valve cylinder portion. .

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