Note: Descriptions are shown in the official language in which they were submitted.
CA 02810034 2013-03-20
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SEALANT BOTTLE FOR TIRE REPAIR OF GAS PRESSURE TYPE
FIELD OF THE INVENTION
This invention relates to a sealant bottle for tire repair, and more
specifically
to a sealant bottle for tire repair of gas pressure type.
BACKGROUND OF THE INVENTION
In the prior art, the air produced by an air compressor is usually employed
for
pressing the sealant within a sealant bottle into a tire during the process of
tire
repair. Afterwards, by means of slow forward movement of the automobile, the
sealant pressed thereinto can cover an inner wall of the tire uniformly for
achieving
the tire repair. Accordingly, such process for tire repair is simple in
operation.
However, a valve plug of the tire which is connected with the sealant bottle
may be
blocked, or a sealant outlet at a bottle cap of the sealant bottle may not be
opened
smoothly under the action of air during this process. In this case, the
pressure
within the sealant bottle will build up increasingly and thus a danger of
explosion
may be caused.
SUMMARY OF THE INVENTION
Aiming at the drawbacks that the pressure within the sealant bottle is too
large
and an explosion may take place due to the blocked valve plug and the closed
sealant outlet in the prior art, the technical problem to be solved in this
invention is
to provide a sealant bottle for tire repair of gas pressure type which can
lower
down the high pressure within the sealant bottle automatically and ensure the
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safety during its usage.
The technical solution adopted to solve its technical problems in this
invention is as follows: a sealant bottle for tire repair of gas pressure type
is
provided. It comprises a bottle body configured for containing sealant. The
bottle
body is provided with a sealant outlet and an air inlet, wherein a bottle cap
is
disposed at the sealant outlet and the air inlet is connected with a straight
pipe
assembly which is inserted into the bottle body and configured to transfer
some air
into the bottle body. An air-inlet end of the straight pipe assembly is
connected
with an air throat for transferring the air into the straight pipe assembly,
and the air
throat is further provided with an explosion proof element configured for
preventing the bottle body from explosion.
A sealant guiding pipe is disposed within the bottle cap. It is comprised of a
first pipe section arranging along the axial direction of the bottle body and
a
second pipe section perpendicular to the first pipe section and connected to a
sealant throat. A second step is disposed on the pipe wall between inlets of
the first
pipe section and the second pipe section, and a rubber plug is further
disposed
between the inlet of the first pipe section and the second step. The first and
second
pipe sections are connected to each other between the second step and a tail
end of
the first pipe section.
In the above-mentioned sealant bottle for tire repair of gas pressure type,
the
explosion proof element comprises a rear housing, a front housing connected
with
the rear housing and a tapered piston in flexible connection with the rear
housing.
An air releasing hole is disposed at an end of the rear housing and a spring
is
disposed within the front housing. Herein, one end of the spring is placed in
a
cavity which is located inside the front housing and is matched with the shape
of
the spring, while its other end is sleeved with an end cylinder on the tapered
piston.
A lock washer provided with an air discharging slot is fixedly mounted between
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the rear housing and the front housing.
In the above-mentioned sealant bottle for tire repair of gas pressure type,
the
explosion proof element is located at the air-inlet end of the air throat.
In the above-mentioned sealant bottle for tire repair of gas pressure type, a
neck tube with an external thread is disposed at the sealant outlet of the
bottle
body. The bottle cap is provided with a holding cavity of which the inner wall
is
disposed with an internal thread adapted with the external thread. The first
pipe
section is disposed within the holding cavity, and a sealing gasket is
provided
between the neck tube and a top surface of the holding cavity. The tail end of
the
first pipe section extends to a top part of the holding cavity and the second
pipe
section is disposed within the top part of the holding cavity.
In the above-mentioned sealant bottle for tire repair of gas pressure type,
the
straight pipe assembly comprises a straight pipe connector, a first straight
pipe and
a second straight pipe that are connected with each other sequentially. An air
sealing ring for straight pipe is provided between the straight pipe connector
and
the first straight pipe, and a gasket for straight pipe which is configured to
prevent
the sealant within the bottle body from leakage is provided at the connection
point
between the first and the second straight pipes.
In the above-mentioned sealant bottle for tire repair of gas pressure type,
both
the gasket for straight pipe and the air sealing ring for straight pipe are 0-
shaped
rings.
In the above-mentioned sealant bottle for tire repair of gas pressure type, a
sponge for straight pipe is further disposed within the first straight pipe,
wherein
the sponge for straight pipe is configured to prevent the sealant from flowing
to the
air throat when the sealant bottle for tire repair of gas pressure type is
inverted.
In the above-mentioned sealant bottle for tire repair of gas pressure type,
the
straight pipe connector is connected with the air inlet by way of clamping,
and
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some sealing sealant is encapsulated within a gap between the straight pipe
connector and the air inlet.
In the above-mentioned sealant bottle for tire repair of gas pressure type,
the
straight pipe connector is in screwed connection with the air throat, and a
sealing
gasket is disposed between the straight pipe connector and the air throat.
In the above-mentioned sealant bottle for tire repair of gas pressure type, an
end of the sealant throat that has no connection with the bottle cap is
disposed with
a tire connection nozzle.
When implementing the sealant bottle for tire repair of gas pressure type in
this invention, the following advantageous effect may be achieved: in this
invention, the explosion proof element is disposed on the air throat.
Accordingly,
during the process of tire repair, the air can flow out through the air
releasing hole
on the explosion proof element so as to reduce the high pressure within the
sealant
bottle and thus ensure the safety during the tire repair when the pressure
within the
sealant bottle is too high. Besides, the rubber plug can move in the first
pipe
section following the pressure within the bottle body by the adoption of the
bottle
cap with the sealant guiding pipe as well as the step and the rubber plug
arranged
in the first pipe section of the sealant guiding pipe. In this way, not only
the sealant
is supplied to the breakage of the tire through changing the gas pressure
within the
bottle body, but also the sealant leakage and the damage to sealant bottle are
avoided in the event of fluctuating pressure within the bottle body. The
sealant
bottle for tire repair in this invention is simple in structure and low in
cost.
Besides, it can effectively lower down the pressure within the sealant bottle,
ensure
the safety during its usage and bring convenience for storage.
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BRIEF DESCRIPTION OF THE DRAWINGS
Below this invention will be further explained in detail with reference to
accompanying drawings and specific embodiments. In the figures:
Figure 1 is a schematic diagram illustrating the connection of the sealant
bottle for tire repair of gas pressure type during its usage;
Figure 2 is an exploded structural diagram for the sealant bottle for tire
repair
of gas pressure type according to an embodiment of this invention;
Figure 3 is an exploded structural diagram for the straight pipe assembly of
the sealant bottle for tire repair of gas pressure type according to an
embodiment of
this invention;
Figure 4 is an exploded structural diagram for the explosion proof element
according to an embodiment of this invention;
Figure 5A is a sectional view illustrating the explosion proof element when
its
air releasing hole is closed according to an embodiment of this invention;
Figure 5B is a sectional view illustrating the explosion proof element when
its
air releasing hole is opened according to an embodiment of this invention;
Figure 6 is a cross-sectional view for the sealant bottle for tire repair of
gas
pressure type according to an embodiment of this invention;
Figure 7 is an enlarged view of A in Figure 6;
Figure 8A illustrating the sealant bottle for tire repair of gas pressure type
when the rubber plug inside the bottle cap is located at position a at normal
temperature and pressure in an embodiment of this invention;
Figure 8B illustrating the sealant bottle for tire repair of gas pressure type
when the rubber plug inside the bottle cap is located at position b in the
case of
being expanded with heat in an embodiment of this invention;
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Figure 8C illustrating the sealant bottle for tire repair of gas pressure type
when the rubber plug inside the bottle cap is located at position c in the
case of
being introduced with some compressed air in an embodiment of this invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The forward and backward orientations in this invention are defined as
follows: when an air compressor is used to supply some air into the sealant
bottle
for tire repair, the orientation of the air compressor refers to the backward
orientation, while the orientation of the sealant bottle refers to the forward
one.
As shown in Figures 1-8C, a sealant bottle for tire repair of gas pressure
type
is provided in this invention. It comprises a bottle body 1 provided with a
sealant
outlet 11 and an air inlet 4. Herein, a bottle cap 2 is disposed at the
sealant outlet
12 and the air inlet 12 is connected with a straight pipe assembly 5 which is
inserted into the bottle body 1 and configured to transfer some air into the
bottle
body 1. An air-inlet end of the straight pipe assembly 5 is connected with an
air
throat 6 for transferring the air into the straight pipe assembly 5, wherein
the air
throat 6 is further provided with an explosion proof element 7 configured for
preventing the bottle body 1 from explosion. A sealant guiding pipe is
disposed
within the bottle cap 2. It is comprised of a first pipe section 21 arranging
along the
axial direction of the bottle body 1 and a second pipe section 22
perpendicular to
the first pipe section 21. The tail end 222 of the second pipe section 22 is
connected to a sealant throat 3 so that the sealant within the bottle body is
guided
to the tire. A first step 25 is disposed at an inlet 211 of the first pipe
section 21, and
a second step 26 is disposed on the pipe wall between inlets 211 and 212 of
the
first pipe section 21 and the second pipe section 22. A rubber plug 26 is
further
disposed between the inlet 211 of the first pipe section 21 and the second
step 26,
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and the first and second pipe sections 21 and 22 are connected to each other
between the second step 26 and a tail end 212 of the first pipe section 21.
Based on the above-mentioned structure, the air throat 6, the straight pipe
assembly 5, the bottle cap 2 (especially the sealant guiding pipe within the
bottle
cap 2) and the sealant throat 3 form a passage under the action of the air
produced
by the air compressor. In this case, the sealant within the bottle body 1
flows to the
tire through the bottle cap 2 and the sealant throat 3. Meanwhile, some air
can
further be supplied into the tire through such passage when all the sealant is
used
up. In addition, the explosion proof element 7 on the air throat 6 can be
connected
to the surrounding atmosphere automatically when the pressure within the
bottle
body 1 is too high, thus lowering down the high pressure within the bottle
body 1.
Referring to Figure 3, the straight pipe assembly 5 in this invention is
comprised of a straight pipe connector 52, a first straight pipe 53 and a
second
straight pipe 54 that are connected with each other sequentially. Herein, the
straight
pipe connector 52 is the air-inlet end of the straight pipe assembly 5. A
gasket for
straight pipe 51 is located at an open end of the second straight pipe 54,
i.e. the air-
outlet end of the straight pipe assembly 5. In order to guarantee the air
impermeability of the straight pipe assembly 5, an air sealing ring for
straight pipe
55 is fixedly arranged between the straight pipe connector 52 and the first
straight
pipe 53 that are in screwed connection with each other; meanwhile, a gasket
for
straight pipe 51 is disposed at the connection point between the first and
second
straight pipes 53 and 54 so as to prevent the sealant within the bottle body 1
from
leakage. Both the gasket for straight pipe 51 and the air sealing ring for
straight
pipe 55 mentioned here are 0-shaped rings. In another embodiment, a sponge for
straight pipe 56 is arranged within the first straight pipe 53. In this
regard, the air
produced by the air compressor firstly passes through the sponge for straight
pipe
56 and then enters the second straight pipe 54 after it goes into the straight
pipe
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assembly 5. Accordingly, the sealant is prevented from flowing to the air
throat
when the sealant bottle for tire repair of gas pressure type is inverted by
adoption
of the sponge for straight pipe 56.
The explosion proof element 7 arranged on the air throat 6 is the key
structure
for guaranteeing the safety usage of the sealant bottle for tire repair in
this
invention. In Figures 4-5B, the explosion proof element 7 comprises a rear
housing
71, a front housing 72 connected with the rear housing 71 and a tapered piston
73
in flexible connection with the rear housing 71. An air releasing hole 711 is
disposed at an end of the rear housing 71, and a spring 74 is disposed within
the
front housing 72. Moreover, one end of the spring 74 is placed in a cavity
which is
located inside the front housing 72 and is matched with the shape of the
spring 74,
and its other end is sleeved with an end cylinder 731 on the tapered piston
73. A
lock washer 76 provided with an air discharging slot 761 is fixedly mounted
between the rear housing 71 and the front housing 73. Wherein, the lock washer
76
is integrally arranged with the rear housing 71. In addition, the lock washer
76 is
also provided with an annular groove, wherein an 0-shaped sealing ring 762 is
disposed within the annular groove. After finishing assembling the explosion
proof
element 7, a sealing gasket 77 is further disposed between the front housing
72 and
the lock washer 76 so that the two are sealed with each other. In this way,
only a
gap for the air discharging slot 761 is left between the two for air exhaust.
The
specific processes of the explosion proof element 7 for realizing the air
inflation
and the air exhaust are described briefly in the following: when the air
compressor
runs, the tapered piston 73 moves toward the front housing 72 to compress the
spring 74 under the action of air pressure, and thus the air releasing hole
711 is
blocked by the tapered piston 73. In this circumstance, air can enter a
pressure
reducing valve and finally enter the bottle body 1 through a groove on the
surface
of the tapered piston 73 after passing through the rear housing 71. Also, at
this
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moment, only a slight amount of air is discharged from the air releasing hole
711.
Instead, when the pressure within the bottle body 1 is too large, the spring
74
presses against the tapered piston 73 to make it move towards the rear housing
71
until the air releasing hole 711 is no longer blocked. At this moment, some
air can
be discharged by the air releasing hole 711 after passing through the air
discharging slot 761 on the lock washer 76.
The specific position of the explosion proof element 7 in the air throat 6 is
not
limited here, and its installation position also has no influence on its
implementation effect. In another implementation, the explosion proof element
7 is
in proximity to the connection point of the air throat 6 and the air-inlet end
of the
straight pipe assembly. Of course, the explosion proof element 7 can also be
located at the middle part of the air throat 6. The operation process and
operation
principle for the explosion proof element 7 at different locations are the
same as
each other, and thus they will not be repeatedly described here.
In this invention, the rubber plug 24 can move in the first pipe section 21
according to the pressure change within the bottle body 1 so that the sealant
outlet
is blocked or opened as required. As shown in Figure 8A, the rubber plug 24 is
located between an inlet 211 of the first pipe section 21 and the second step
26 (i.e.
position a) at normal temperature and pressure. In this case, the rubber plug
24
blocks the sealant outlet and the sealant within the bottle body 1 is
prevented from
flowing outwards. As shown in Figure 8C, the pressure within the bottle body 1
suddenly increases once the air compressor works. Herein, the rubber plug 24
thus
moves to a position between the tail end 212 of the first pipe section 21 and
the
connection point of the first and second pipe sections 21 and 22 (i.e.
position c). At
this moment, a passage is formed for the first and second pipe sections 21 and
22,
and thus the sealant can flow to a breakage of the tire from the bottle body 1
by
passing through the sealant guiding pipe and the sealant throat 3. In this
way, some
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sealant can be supplied to the breakage of the tire for tire repair by
changing the
pressure within the bottle body 1. It can be seen that such operation process
is
simple and convenient for promotion.
In addition, a first step 25 is disposed at the inlet 211 of the first pipe
section
21, and the second step 25 is disposed between such inlet 211 and the inlet
221 of
the second pipe section 22. As a result, although the rubber plug 24 can move
inside the first pipe section 21 when the temperature within the bottle body 1
rises
and the sealant expands due to surrounding environmental change, its movement
is
eventually limited by the arrangement of the second step 26. That is, the
rubber
plug can move from the inlet 211 of the first pipe section 21 to the second
step 26
to the largest extent (i.e. position b), and it is finally blocked at the
second step 26
(as shown in Figure 8b). On the other hand, instead of moving into the bottle
body
and further causing sealant leakage under the external pressure, the rubber
plug 24
is blocked at the first step 25 when the temperature within the bottle body 1
falls
and the sealant shrinks due to surrounding environmental change. Accordingly,
the
first and second steps 25 and 26 are configured for ensuring that any leakage
or
any other damage caused by temperature change of surrounding environment is
prevented from the sealant bottle even when the sealant bottle containing the
sealant is stored in any extreme environment.
As shown in Figures 2 and 7, a neck tube 12 with an external thread is further
disposed at the opening of the bottle body 1. The bottle cap 2 is provided
with a
holding cavity 27 of which the inner wall is disposed with an internal thread
adapted with the external thread. The first pipe section 21 is disposed within
the
holding cavity 27, and a sealing gasket 23 which is tightly pressed by the end
of
the neck tube 12 is provided between the neck tube 12 and a top surface of the
holding cavity 27. As a result of the sealing gasket, it can be avoided that
some
sealant flows from the connection gap between the bottle body 1 and the bottle
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2. The tail end 212 of the first pipe section 21 extends to the top part of
the holding
cavity 27 and the second pipe section 22 is inserted into the top part 271 of
the
holding cavity 27. Wherein, the top surface and the top part refer to the
corresponding portion between the holding cavity 27 and the bottle cap 2.
In this invention, as mentioned above, the operation principle of the sealant
bottle for tire repair of gas pressure type is as follows:
State 1: such sealant bottle for tire repair of gas pressure type is installed
in
the air compressor in an inverted way when the air compressor has not been
working before the tire repair. The air-outlet end of the straight pipe
assembly 5 is
blocked by the gasket for straight pipe 5 right now so that it is ensured the
sealant
within the bottle body 1 is prevented from flowing out of the straight pipe
assembly. Moreover, the rubber plug 24 arranged in the bottle cap is located
at the
opening of the first pipe section 21 in such a way that the sealant within the
bottle
body 1 is prevented from flowing to the sealant throat 3 through the bottle
cap.
State 2: During the process of normal tire repair, the sealant throat 3 is
connected with the valve plug of the tire to be repaired. The air compressor
starts
to work now and the air releasing hole 711 of the explosion proof element 7 is
otherwise blocked. As a result, the air produced from the air compressor
firstly
enters the straight pipe assembly 5 through the air throat 6 and further
bursts
through the gasket for straight pipe 51 at the air-outlet end therein.
Thereafter, the
pressure within the bottle body 1 increases continuously which makes the
rubber
plug 24 within the bottle cap 2 move to the end portion of the first pipe
section 21.
The sealant within the bottle body 1 thus flows into the tire by passing
through the
sealant guiding pipe in the bottle cap 2 and the sealant throat 3
sequentially.
Meanwhile, the tire is inflated to a certain pressure through such passage.
State 3: In the event of abnormal condition during tire repair, in specific,
if the
valve plug of the tire is blocked or the rubber plug 24 cannot be forced to
move
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within the bottle cap, too large pressure is caused in the bottle body 1 since
the air
produced by the air compressor enters the bottle body 1 constantly. In this
invention, however, the air releasing hole 711 of the explosion proof element
7 is
no longer blocked right now, and the air can be discharged from the air
discharging
slot 76 on the lock washer 76 after passing through the air releasing hole 711
which functions as lowering down the pressure within the bottle body 1.
State 4: the sealant throat 3 is removed from the valve plug of the tire when
finishing the tire repair (or when interrupting the tire repair owing to
abnormal
condition). At this moment, the tire repair operation is ended or interrupted.
It is mentioned that there may be another abnormal condition in state 3. That
is, after the air compressor starts to work, the air produced therefrom cannot
burst
through the gasket for straight pipe 51 at the air-outlet end of the straight
pipe
assembly. Although the pressure within the bottle body 1 is free of any
influence,
high pressure is yet caused between the straight pipe assembly and the air
throat 6.
In this invention, the air releasing hole 711 of the explosion proof element 7
is no
longer blocked in this case, and the air can be discharged from the air
discharging
slot 76 on the lock washer 76 after passing through the air releasing hole 711
which functions as avoiding any danger that may be caused by the high pressure
within the straight pipe assembly and the air throat 6.
High requirement on the air impermeability is made to the whole apparatus of
this invention due to its design of gas pressure type. In order to improve the
air
impermeability of such apparatus, the following configurations are adopted:
(1)
some sealing sealant is encapsulated in the gap formed when the straight pipe
connector 52 is connected in the air inlet 4 by way of clamping; (2) a sealing
gasket is further arranged between the straight pipe connector 52 and the air
throat
6 when the two is in screwed connection with each other; and (3) air sealing
ring
for straight pipe 55 is arranged between the straight pipe connector 52 and
the first
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straight pipe 53.
On the other hand, high requirement on the air impermeability is also made to
the bottle cap 2 of the sealant bottle in this invention since this sealant
bottle for
tire repair of gas pressure type is installed in the air compressor in an
inverted way.
Specifically, the following configurations are included herein : (1) a sealing
gasket
23 is arranged between the neck tube 12 and the top surface of the holding
cavity
27; and (2) the rubber plug 24 is adopted to increase the impermeability of
the
sealant guiding pipe in the bottle cap 2.
Moreover, a locking ring 28 is disposed at the connection point between the
sealant guiding pipe and the sealant throat 3. One end of the sealant throat 3
is
clamped by the locking ring 28 to achieve a fixed connection with the bottle
cap 2.
The design of locking ring 28 contributes to increasing the impermeability of
the
connection between the bottle cap 2 and the sealant throat 3 in such a way
that the
sealant is prevented from leakage by the gap between the two. Herein, the
other
end of the sealant throat 3 (i.e. the end located away from the bottle cap 2)
is
provided with a tire connection nozzle 31 so as to be connected with the tire
to be
repaired.
In conclusion, the sealant can flow into the tire to achieve the tire repair
under
the action of air during the process of tire repair on one hand by adoption of
the
sealant bottle for tire repair of gas pressure type in this invention. On the
other
hand, when the pressure within the bottle body of the sealant bottle is too
large, the
explosion proof element can be connected to the surrounding atmosphere which
thus lowers down the high pressure within the bottle body effectively and
ensures
the safety usage for the sealant bottle. Moreover, the impermeability of this
invention is excellent in which case any problems such as low efficiency in
tire
repair caused by sealant leakage or air leakage are hold back.
All mentioned above are only the preferred embodiments of this invention,
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which are not intended to limit this invention. Any modifications, equivalents
or
improvements made within the spirit and principle of this invention should be
included in the protection scope of this invention.
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