CN200940717Y - Automatic pressure reducing and anti-explosvie safety valve for bicycle tire - Google Patents

Abstract

When the present bicycle is running with the wheels, since the temperature is increased, which leads to the hyperbaria in the tire of the bicycle, so the tire will burst, which is an important factor of causing the traffic accident. The utility model provides a bicycle tire automatic decompression explosion preventing safety gas beak which comprises a push-pull rod, a trachea, a sealing gas ring with a cone, an exhaust gas sealing adhesive cycle, a spring, an exhausting gas hole, a sealing gas sealing adhesive cycle, a sealing gas bowl and a gas beak cap with a hole. The utility model can make a part of the gas in the tire of the bicycle emit timely before the air pressure reaches the tire explosion critical point, so as to recover the air pressure in the tire of the bicycle to normal value and eradicate the driving safety hidden trouble caused by the tire explosion.

Description

The bicycle tyre automatic decompression explosion-proof safety nozzle

One, technical field

The utility model relates to a kind of valve, particularly a kind of bicycle tyre automatic decompression explosion-proof safety nozzle.

Two, background technique

Existing bicycle tyre is because long-time length apart from load operation, is added day and night temperature and space temperature variation, and particularly in the summer of sweltering heat, bicycle tyre is elevated to 50-70 ℃ by the temperature under the common state, makes tire internal air pressure pressure (P ₂=T ₂/ T ₁P ₁) increase by 2～4 times.Because existing cranked tire valve gas can only advance and can not go out, so will blow out when tire can bear the limit when the tire internal air pressure increases and surpasses, this is an important potential safety hazard to existing bicycle, and this also is the one of the main reasons that causes traffic accident.

Three, model utility content

The technical deficiency of not having security limitations at existing bicycle tyre internal air pressure, the utility model provides a kind of can emit proper amount of gas automatically before the bicycle tyre internal air pressure reaches the transition point of blowing out, make the bicycle tyre internal air pressure return to the bicycle tyre automatic decompression explosion-proof safety nozzle of normal value.

The scheme that solves the utility model technical problem is: the bicycle tyre automatic decompression explosion-proof safety nozzle is made of pull bar, tracheae, band awl envelope compression ring, exhaust sealing cushion rubber, spring, exhaust port, envelope hermetic seal rubber ring, envelope gas bowl and gas nozzle cap with holes.Tracheae is the middle cylinder that a dividing plate with holes is arranged, and dividing plate with holes has three through holes, arrangement in alignment, and the through hole of center holds pull bar and is placed in spring on the pull bar, and the through hole on both sides is an exhaust port.One catch is arranged on the pull bar, be used for the maximum stretch-draw distance of control spring, the pull bar lower end is provided with screw thread.There is a hemispherical projections envelope gas bowl center, the center of this hemispherical projections have one with the screw of pull bar lower end threads engaged, the screw degree of depth is 1/2 of ventilation bowl thickness, this hole combines with screw thread with the pull bar lower end, space in the envelope gas bowl around the hemispherical projections is stained with the envelope hermetic seal rubber ring, band awl envelope compression ring is placed on the pull bar, its inner ring diameter is greater than pull bar diameter 1mm, its lower surface is provided with two circular shrinkage hole, one conical projection is arranged in each shrinkage pool, be stained with the exhaust sealing cushion rubber between conical projection and the shrinkage pool, two conical projection of band awl envelope compression ring are inserted respectively in two exhaust ports.All there is a circle ramp projections lower edge of the upper edge of two exhaust ports and tracheae dividing plate with holes center through hole.Spring is after stretch-draw, the hemisphere type projection welded top of seal ring and envelope gas bowl is bored at its two ends respectively with band, spring is to the tensile force f=PSW of band awl seal ring and envelope gas bowl, wherein, P is the maximum atmospheric pressure that bicycle tyre can bear, S is two exhaust port horizontal area sums, and W is a safety factor, gets 1/2.The gas nozzle cap with holes that is with suitable for reading of tracheae, its end has the pore that a diameter is 1mm, and the gas nozzle cap suitable for reading and with holes of tracheae is with screw-thread fit.

When in bicycle tyre, inflating with inflator, the inflator valve with pull bar to pressing down, pull bar promotes to seal the gas bowl downwards makes the envelope hermetic seal rubber ring leave the through hole of tracheae dividing plate with holes center, and high-pressure air enters bicycle tyre from the slit between band awl ventilation ring inner ring and the pull bar.When atmospheric pressure in the bicycle tyre surpasses the normal pressure value, the pressure that air produced in the bicycle tyre will be with awl envelope compression ring and exhaust sealing cushion rubber upwards to back down, and air will be discharged from exhaust port in the bicycle tyre.When atmospheric pressure in the bicycle tyre was got back to the normal pressure value, band awl ventilation ring and exhaust sealing cushion rubber moved downward under the tension of spring, seal exhaust port, and exhaust is stopped.

Because the utility model can automatic vent, decompression when the bicycle tyre internal air pressure is too high, therefore eradicated because of too high the blowing out of causing of bicycle tyre internal air pressure, improved the safety coefficient of driving.

Four, description of drawings

Fig. 1 is the structural drawing of bicycle tyre automatic decompression explosion-proof safety nozzle;

Fig. 2 is the A-A sectional drawing of Fig. 1;

Fig. 3 is the B-B sectional drawing of Fig. 1.

Among the figure: 1. pull bar 2. tracheaes 3. band awls seal compression rings 4. exhaust sealing cushion rubbers 5. springs 6. exhaust ports 7. envelope hermetic seal rubber rings 8. envelope gas bowls 9. gas nozzle caps with holes

Five, embodiment

The bicycle tyre automatic decompression explosion-proof safety nozzle is made of pull bar (1), tracheae (2), band awl envelope compression ring (3), exhaust sealing cushion rubber (4), spring (5), exhaust port (6), envelope hermetic seal rubber ring (7), envelope gas bowl (8) and gas nozzle cap with holes (9).Tracheae (2) is the middle cylinder that a dividing plate with holes is arranged, and dividing plate with holes has three through holes, arrangement in alignment, the through hole of center hold pull bar (1) and and be placed in spring (5) on the pull bar (1), the through hole on both sides is exhaust port (6).Pull bar has a catch on (1), is used for the maximum stretch-draw distance of control spring (5), and pull bar (1) lower end is provided with screw thread.There is a hemispherical projections envelope gas bowl (8) center, the center of this hemispherical projections have one with the screw of pull bar (1) lower end threads engaged, the screw degree of depth is 1/2 of ventilation bowl thickness, this hole combines with screw thread with pull bar (1) lower end, space in the envelope gas bowl (8) around the hemispherical projections is stained with envelope hermetic seal rubber ring (7), band awl envelope compression ring (3) is placed on the pull bar (1), its inner ring diameter is greater than pull bar (1) diameter 1mm, its lower surface is provided with two circular shrinkage hole, one conical projection is arranged in each shrinkage pool, be stained with exhaust sealing cushion rubber (4) between conical projection and the shrinkage pool, two conical projection of band awl envelope compression ring (3) are inserted respectively in two exhaust ports (6).All there is a circle ramp projections lower edge of the upper edge of two exhaust ports (6) and tracheae (2) dividing plate with holes center through hole.Spring (5) is after stretch-draw, the hemisphere type projection welded top of seal ring and envelope gas bowl (8) is bored at its two ends respectively with band, spring (5) is to the tensile force f=PSW of band awl seal ring and envelope gas bowl (8), wherein, P is the maximum atmospheric pressure that bicycle tyre can bear, S is two exhaust ports (6) horizontal area sums, and W is a safety factor, gets 1/2.The gas nozzle cap with holes (9) that is with suitable for reading of tracheae (2), its end has the pore that a diameter is 1mm, and the gas nozzle cap suitable for reading and with holes (9) of tracheae (2) is with screw-thread fit.

When in bicycle tyre, inflating with inflator, the inflator valve with pull bar (1) to pressing down, pull bar (1) promotes envelope gas bowl (8) downwards makes envelope hermetic seal rubber ring (7) leave the through hole of tracheae (2) dividing plate with holes center, and high-pressure air enters bicycle tyre from the slit between band awl ventilation ring inner ring and the pull bar (1).When atmospheric pressure in the bicycle tyre surpasses the normal pressure value, the pressure that air produced in the bicycle tyre will be with awl envelope compression ring (3) and exhaust sealing cushion rubber (4) upwards to back down, and air will be discharged from exhaust port (6) in the bicycle tyre.When atmospheric pressure in the bicycle tyre was got back to the normal pressure value, band awl ventilation ring and exhaust sealing cushion rubber (4) moved downward under the tension of spring (5), seal exhaust port (6), and exhaust is stopped.

Claims (1)

1, a kind of bicycle tyre automatic decompression explosion-proof safety nozzle is by pull bar, tracheae, band awl envelope compression ring, the exhaust sealing cushion rubber, spring, exhaust port, the envelope hermetic seal rubber ring, envelope gas bowl and gas nozzle cap with holes constitute, it is characterized in that: tracheae is the middle cylinder that a dividing plate with holes is arranged, dividing plate with holes has three through holes, arrangement in alignment, the through hole of center hold pull bar and and be placed in spring on the pull bar, the through hole on both sides is an exhaust port, one catch is arranged on the pull bar, the maximum stretch-draw distance that is used for control spring, the pull bar lower end is provided with screw thread, there is a hemispherical projections envelope gas bowl center, the center of this hemispherical projections have one with the screw of pull bar lower end threads engaged, the screw degree of depth is 1/2 of ventilation bowl thickness, this hole combines with screw thread with the pull bar lower end, space in the envelope gas bowl around the hemispherical projections is stained with the envelope hermetic seal rubber ring, band awl envelope compression ring is placed on the pull bar, its inner ring diameter is greater than pull bar diameter 1mm, its lower surface is provided with two circular shrinkage hole, one conical projection is arranged in each shrinkage pool, be stained with the exhaust sealing cushion rubber between conical projection and the shrinkage pool, two conical projection of band awl envelope compression ring are inserted respectively in two exhaust ports, all there is a circle ramp projections lower edge of the upper edge of two exhaust ports and tracheae dividing plate with holes center through hole, spring is after stretch-draw, the hemisphere type projection welded top of seal ring and envelope gas bowl is bored at its two ends respectively with band, spring is to the tensile force f=PSW of band awl seal ring and envelope gas bowl, wherein, P is the maximum atmospheric pressure that bicycle tyre can bear, S is two exhaust port horizontal area sums, W is a safety factor, get 1/2, the gas nozzle cap with holes that is with suitable for reading of tracheae, its end has the pore that a diameter is 1mm, and the gas nozzle cap suitable for reading and with holes of tracheae is with screw-thread fit.

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