JP3197623U - Tire valve core - Google Patents

Abstract

Provided is a valve core that can be applied to any tire valve of American type, British type, and German type. A core main body 11, an airtight ring 12, and an airtight plug 13 are provided. The core main body is provided with a first end 111, a second end 112, and an intermediate stage 113, and the second end 112 and the intermediate stage are provided. The fitting groove 116 is recessed between the first end 111 and the second end 112, a shaft hole 117 is formed, a through hole 118 communicating with the shaft hole is formed, and the second end 112 is formed. An air injection hole 119 that communicates with the shaft hole is formed in the vicinity of the fitting groove 116, and a third step portion 1173 that communicates with the through hole is formed in the shaft hole, and a conical shape is formed in the air injection hole. A hole 1174 is formed, and the hermetic ring is mounted in the fitting groove 116 of the core body 11, and the airtight plug is installed in the shaft hole 117 of the core body 11, and the conical hole part of the shaft hole is formed. 1174 to the third step portion 1173 and can move freely between the conical holes The airtight state when in contact with the inner peripheral surface of the. [Selection] Figure 1

Description

  The present invention relates to a valve core that can be applied to any tire valve of American type, British type and German type.

  Tire valves are valves that are installed at locations where air is injected into tires such as cars and motorcycles. Generally speaking, there are four types: British type, German type, American type, and French type. Each type of valve has a different structure, but both are composed of parts such as a valve tube and a valve core.

  Among existing tire valves, the British type and German type combine the valve core with the valve body with a nut, but the American type tire valve is designed to be combined by screwing the valve core directly into the valve body. Therefore, since the structure of the bubble tube body and the valve core in each type of tire valve is different, only the bubble tube body and the valve core of the same type can be combined.

  As described above, when a person skilled in the art produces a tire valve, it is necessary to produce it separately according to the type, and it takes time and labor to sort and manage the inventory, and the tire valve parts of each type can be freely exchanged. Since it cannot be performed, the manufacturing cost increases, so it has been necessary to improve it.

  The tire valve core according to the present invention has a first end provided at one end, a second end provided at the other end, an intermediate stage provided between the first end and the second end, A flange is provided between the intermediate stage, a fitting groove is provided between the second end and the intermediate stage, and a thread is formed on the outer peripheral surface of the first end. A thread is formed on the surface, a shaft hole is formed from the first end to the second end inside, a through hole communicating with the shaft hole is formed at the end of the second end, and the fitting at the second end An air injection hole communicating with the shaft hole is formed in the vicinity of the groove, and a third step portion communicating with the through hole is formed in the shaft hole near the end of the second end. A conical hole is formed on the side opposite to the third step portion, and the core body is mounted in the fitting groove of the core body, and the distance from the bottom surface to the bottom surface of the flange is An airtight ring made of a compressible elastic material having an outer diameter of 0.3 mm to 12 mm and an outer diameter of 4.3 mm to 4.6 mm, and a conical hole of the shaft hole installed in the shaft hole of the core body Having a hermetic stopper made of a compressible elastic material that can move freely between the first step and the third step, and is in an airtight state when it comes into contact with the inner peripheral surface of the conical hole. It is.

  In such a tire valve core, in the shaft hole, a first step portion is formed from the first end to the intermediate step, and in the intermediate step, a second step portion is formed from the portion in contact with the first step portion to the fitting groove, The inner diameter of the second step portion is smaller than the inner diameter of the first step portion, a chamfered step portion is formed where the first step portion is in contact with the second step portion, and the inner diameter of the third step portion is the second step portion. A conical hole is formed between the second step portion and the third step portion, and the conical hole portion is gradually inclined from the second step portion to the third step portion. It is preferable that the air injection hole is formed in the vicinity of the conical hole portion so as to expand and communicate with the third step portion.

  In such a tire valve core, the diameter of the second end is preferably smaller than the diameter of the intermediate stage, and the diameter of the fitting groove is preferably smaller than the diameters of the intermediate stage and the second end.

  When the tire valve core according to the present invention is used for a British type or German type tire valve, the tire valve core is inserted into the assembly shaft hole of the British type or German type tire valve, and the nut is attached to the tire valve core. When screwed into the thread of the tire valve, the convex edge of the nut presses the flange of the tire valve core, presses the airtight ring of the tire valve core downward, and firmly contacts the contact step of the tire valve. State.

On the other hand, when the tire valve core according to the present invention is used for an American type tire valve, the tire valve core is inserted into the shaft hole of the American type tire valve, and the intermediate stage of the tire valve core is changed to the threaded step of the shaft hole. When screwed together, the airtight ring of the tire valve core is firmly in contact with the contact step portion of the tire valve to be in an airtight state.
Therefore, if the tire valve core according to the present invention is used, it can be applied to any of the UK type, German type, and American type tire valves, and there is no need to manufacture them separately. Therefore, the labor of inventory management can be reduced, and since it can be applied to any type of tire valve, it is extremely practical.

It is a partial section top view of the tire valve core concerning the present invention. In the tire valve core which concerns on this invention, it is sectional drawing which shows the state combined with the British type or the German type tire valve. In the tire valve core which concerns on this invention, it is sectional drawing which shows the state combined with the American type tire valve. In the tire valve core which concerns on this invention, it is a side view top view which shows the state combined with the other tire valve. In the tire valve core which concerns on this invention, it is a side view top view which shows the state combined with the other tire valve. In the tire valve core which concerns on this invention, it is a side view top view which shows the state combined with the other tire valve. In the tire valve core which concerns on this invention, it is a side view top view which shows the state combined with the other tire valve.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, the following Example is only what showed the preferred embodiment of this invention, and the technical scope of this invention is not limited to the following Example itself at all.

As shown in FIGS. 1 to 3, the tire valve core 10 according to the present invention includes a core body 11, an airtight ring 12, and an airtight plug 13.
As shown in FIG. 1, the core body 11 is provided with a first end 111 at one end and a second end 112 at the other end, and an intermediate stage between the first end 111 and the second end 112. 113, a flange 115 is projected between the first end 111 and the intermediate stage 113, a fitting groove 116 is recessed between the second end 112 and the intermediate stage 113, and the The diameter of the second end 112 is smaller than the diameter of the intermediate step 113, the diameter of the fitting groove 116 is smaller than the diameters of the intermediate step 113 and the second end 112, and a thread is formed on the outer peripheral surface of the first end 111. At the same time, another thread is formed on the outer peripheral surface of the intermediate stage 113.

As shown in FIG. 1, a shaft hole 117 is formed in the core body 11 from the first end 111 to the second end 112, and a through hole 118 communicating with the shaft hole 117 is formed at the end of the second end 112. In the shaft hole 117, a first step portion 1171 is formed from the first end 111 to the intermediate step 113, and the second step portion extends from the portion contacting the first step portion 1171 of the intermediate step 113 to the fitting groove 116. 1172 is formed, and the inner diameter of the second step portion 1172 is smaller than the inner diameter of the first step portion 1171.
A chamfered step 1175 is formed where the first step 1171 contacts the second step 1172, and a third step 1173 communicating with the through hole 118 is formed near the end of the second end 112. The inner diameter of the three step portion 1173 is larger than the inner diameter of the second step portion 1172, a conical hole portion 1174 is formed between the second step portion 1172 and the third step portion 1173, and the conical hole portion 1174 is It is designed to spread obliquely from the second step portion 1172 to the third step portion 1173.
An air injection hole 119 communicating with the third step portion 1173 is formed in the vicinity of the fitting groove 116 of the second end 112 of the core body 11, and the air injection hole 119 is formed in the vicinity of the conical hole portion 1174. It is preferred that

As shown in FIG. 1, the airtight ring 12 is an annular ring made of a compressible elastic material, and is provided in the fitting groove 116 of the core body 11, from the bottom surface of the flange 115 to the bottom surface of the airtight ring 12. The outer diameter of the airtight ring 12 is larger than 4.3 mm and smaller than 4.6 mm.
If the size of the hermetic ring 12 and the distance from the flange 115 are within the above-mentioned ranges, a general 5V1 threaded valve tube body (such as an American type tire valve of a bicycle or a tire valve of a car or a motorcycle) is used. Applicable.

  As shown in FIG. 1, the airtight plug 13 is a cylindrical body made of a compressible elastic material, and the outer diameter is larger than the inner diameter of the small diameter end of the conical hole portion 1174 and smaller than the inner diameter of the third step portion 1173. The airtight plug 13 is installed in the shaft hole 117 of the core body 11 and can freely move between the conical hole portion 1174 and the third step portion 1173 of the shaft hole 117. When contacting the inner peripheral surface, the airtight ring 12 of the tire valve core 10 is in an airtight state.

According to the said structure, the tire valve core 10 which concerns on this invention is applicable to any tire valve of a British type, a German type, and an American type.
As shown in FIG. 2, the British type or German type tire valve 20 has a thread formed on the outer peripheral surface, an assembly shaft hole 21 formed inside, and an inner peripheral surface of an intermediate stage of the assembly shaft hole 21. A conical contact step 211 is formed.
When the tire valve core 10 according to the present invention is used for a British type or German type tire valve, the tire valve core 10 is inserted into the assembly shaft hole 21 of the British type or German type tire valve 20, and the nut 22 is attached to the tire. When the valve core 10 is mounted and screwed into the thread of the tire valve 20, the flange 221 of the nut 22 is pushed into the flange 115 of the tire valve core 10, and the airtight ring 12 of the tire valve core 10 is pushed down slightly. The tire valve 20 is firmly in contact with the contact step portion 211 of the tire valve 20 to be in an airtight state.

On the other hand, as shown in FIG. 3, the American type tire valve 30 has a thread formed on the outer peripheral surface, a shaft hole 31 formed inside, and a thread step on the upper inner peripheral surface of the shaft hole 31. 311 is formed, and a conical contact step 312 is formed on the inner peripheral surface of the intermediate step.
When the tire valve core 10 according to the present invention is used for an American type tire valve, the tire valve core 10 is inserted into the shaft hole 31 of the American type tire valve 30, and the intermediate stage 113 of the tire valve core 10 is connected to the shaft hole 31. When the threaded step 311 is screwed, the airtight ring 12 of the tire valve core 10 is firmly in contact with the contact step 312 of the tire valve 30 to be in an airtight state.

  As described above, when the intermediate stage 113 of the tire valve core 10 is screwed into the thread stage 311 of the tire valve 30, the distance from the bottom surface of the flange 115 to the bottom surface of the airtight ring 12 is within the range of 10.3 mm to 12 mm. Therefore, even if the core body 11 is inserted into the tire valve 30 and combined, the flange 115 and the upper surface of the tire valve 30 do not interfere with each other. Further, since the outer diameter of the hermetic ring 12 is larger than 4.3 mm and smaller than 4.6 mm, it is applicable to any tire valve of British type, German type, and American type, and each part corresponds to each other.

The tire valve core 10 according to the present invention can be applied not only to British type, German type, and American type tire valves, but also to various tire valves 30a, 30b, 30c shown in FIGS. . Further, if the tire valve core 10 according to the present invention is combined with each tire valve shown in FIGS. 3 to 7, the tire valve core 10 can be attached to a tire.
Among them, in the case of the tire valves 20, 30 a, 30 b, 30 c shown in FIGS. 2 to 6, rubber bases 23, 32 are provided at the ends, and are attached to the tire tube by the rubber bases 23, 32.
On the other hand, in the case of the tire valve 30d shown in FIG. 7, a rubber base 33 is installed at the end thereof, and the rubber base 33 is screwed into a nut to be combined with a wheel without a tire tube.

As shown in FIGS. 2 and 3, when the tire is filled with air through the tire valve, the tire valve core 10 sends air in combination with a manual or electric air pump, and the high pressure air from the air pump is discharged. The high pressure air can be injected into the tire tube through the air injection hole 119 by entering from the shaft hole 117 of the tire valve core 10 and moving away from the conical hole 1174 while pushing the airtight plug 13.
On the other hand, when the air injection by the pump is stopped, the high-pressure air in the tire tube flows into the shaft hole 117 through the through hole 118 of the second end 112 so that the hermetic plug 13 comes into contact with the conical hole 1174. Since the airtight stopper 13 seals the air injection hole 119 and becomes airtight, the high pressure air in the tire tube does not leak to the outside.

10 Tire valve core
11 Core body 111 First end
112 Second end 113 Intermediate stage
115 Flange 116 Mating groove
117 Shaft hole 1171 First step
1172 Second stage 1173 Third stage
1174 Conical hole 118 Through hole
119 Air injection hole 12 Airtight ring
13 Airtight stopper 20, 30, 30a, 30b, 30c Tire valve 21 Assembly shaft hole
211 Contact step 22 Nut
221 Convex edge 23, 32 Rubber base
31 Shaft hole 311 Screw thread
312 Abutting step 33 Rubber base

Claims (3)

A first end is provided at one end, a second end is provided at the other end, an intermediate stage is provided between the first end and the second end, and a flange is provided between the first end and the intermediate stage. Is provided with a fitting groove between the second end and the intermediate stage, a thread is formed on the outer peripheral surface of the first end, and a thread is formed on the outer peripheral surface of the intermediate stage, A shaft hole is formed from the inside of the first end to the second end, a through hole communicating with the shaft hole is formed at the end of the second end, and the shaft hole is located near the fitting groove at the second end. An air injection hole that communicates with the through hole is formed, and a third step portion that communicates with the through hole is formed near the end of the second end of the shaft hole, and the side opposite to the third step portion of the air injection hole A core body having a conical hole formed therein,
A compressible elastic material that is mounted in the fitting groove of the core body, the distance from the bottom surface to the bottom surface of the flange is 10.3 mm to 12 mm, and the outer diameter is 4.3 mm to 4.6 mm. An airtight ring consisting of
It is installed in the shaft hole of the core body and can freely move between the conical hole portion and the third step portion of the shaft hole, and is in an airtight state when abutting against the inner peripheral surface of the conical hole portion An airtight stopper made of a compressible elastic material,
Tire valve core.   A first step portion is formed from the first end to the intermediate step in the shaft hole, and a second step portion is formed from the portion in contact with the first step portion to the fitting groove in the intermediate step. The inner diameter of the first step portion is smaller than the inner diameter of the first step portion, a chamfered step portion is formed where the first step portion is in contact with the second step portion, and the inner diameter of the third step portion is larger than the inner diameter of the second step portion. A conical hole is formed between the second step portion and the third step portion, and the conical hole portion gradually spreads obliquely from the second step portion to the third step portion, and the air injection The tire valve core according to claim 1, wherein the hole is formed in the vicinity of the conical hole so as to communicate with the third step portion.   The tire valve core according to claim 1 or 2, wherein a diameter of the second end is smaller than a diameter of the intermediate stage, and a diameter of the fitting groove is smaller than diameters of the intermediate stage and the second end.

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