Liquid pipe one-way valve

Abstract

The utility model relates to a liquid pipe one-way valve which comprises a valve body, the valve body comprises a connecting nozzle and a connecting sleeve, and a connecting channel is formed on the inner side of the connecting sleeve. A liquid outlet channel is formed in the connecting nozzle, a valve element is arranged in the liquid outlet channel and comprises an inner nozzle and a switch assembly, a medium channel is formed in the inner side of the inner nozzle, the switch assembly at least comprises a sealing piece used for sealing the medium channel and an output piece connected with the sealing piece, and the outer end of the output piece extends into the connecting channel. The output piece can move inwards to push away the sealing piece to open the medium channel under the external action or move outwards to drive the sealing piece to close the medium channel under the action of elastic reset force. According to the scheme, when the bottle body is connected with the tire valve, the air needle abuts against the output piece to open the medium channel to guide liquid into the tire, and when the bottle body is not connected with the tire valve, the sealing piece is restored to close the medium channel through internal acting force, so that the situation that when the bottle body is not connected with the tire, the inflator pump is started firstly, and the liquid flows into the tire is effectively prevented. And the cleaning is troublesome due to accidental output of the tire repairing liquid.

Description

Technical Field

[0001] The utility model relates to the technical field of tire repair equipment, in particular to a liquid pipe one-way valve. Background Art

[0002] With the development of the economy and the improvement of people's income, more and more families own private cars, which makes the number of cars on the road increasing, and correspondingly the number of car failures is also increasing. For example, when a car is driving, it is inevitable that the tire will be punctured. Especially when such an accident occurs on the highway, how to quickly repair the tire is particularly important.

[0003] The existing repair of automobile tires usually installs a tire repair liquid bottle on an air pump, and the tire repair liquid is output into the tire through the air pump. For example, a Chinese utility model with the publication number CN213291415U discloses a tire repair liquid bottle, which includes a bottle body, a bottle cap body and an air inlet and outlet valve. An opening is provided at the bottom of the bottle body, the bottle cap body covers the opening, the air inlet and outlet valve is buckled with the side of the bottle cap body facing the inside of the bottle body, an air inlet and an air outlet are provided on the other side of the bottle cap body, the air inlet is connected to the air pump, and the air outlet is connected to the tire. When the air pump inflates, it can push the air inlet and outlet valve away from the bottle cap body, so that the tire repair liquid in the bottle body can be injected into the tire through the air outlet.

[0004] However, due to user negligence or improper use, if the air pump is started first when the liquid outlet is not connected to the tire, the tire repair liquid will be accidentally output and splashed on the tire surface. The bumps formed after the tire repair liquid solidifies may cause the vehicle to be unstable during high-speed driving, and even the tire needs to be disassembled and cleaned, which is extremely troublesome. Summary of the Invention

[0005] In order to solve the above problems, the purpose of the utility model is to provide a liquid pipe one-way valve, which is only opened in the connected state, can be installed on the liquid pipe outlet of the tire repair liquid bottle and connected to the tire nozzle; when not connected to the tire nozzle, the one-way valve normally closes the liquid pipe; when connected to the tire nozzle, the liquid pipe is opened under the action of the thimble of the tire nozzle, and the tire repair liquid is guided into the tire, which is very convenient and safe.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A liquid pipe one-way valve, comprising a valve body, characterized in that: the valve body includes a connecting nozzle inserted on the outlet of the liquid pipe and a connecting sleeve partially sleeved on the connecting nozzle, and a connecting channel is formed on the inner side of the other part of the connecting sleeve; an outlet channel communicating with the liquid pipe and the connecting channel is formed in the connecting nozzle, and a valve core is arranged in the outlet channel. The valve core includes an inner nozzle positioned in the outlet channel and a switch assembly mounted on the inner nozzle. A medium channel communicating with the outlet channel and the connecting channel is formed on the inner side of the inner nozzle. The switch assembly at least includes a sealing member for closing the medium channel and an output member connected to the sealing member and with its outer end extending into the connecting channel. The output member can move inward under the action of an external force to push open the sealing member to open the medium channel, or move outward under the action of an elastic restoring force to drive the sealing member to close the medium channel.

[0008] In the above technical solution, a one-way valve is provided at the end of the liquid pipe. The connecting nozzle of the one-way valve is inserted on the liquid pipe, and a connecting sleeve is sleeved on the outer side of the connecting nozzle. A connecting channel is formed on the inner side of the outer part of the connecting sleeve and is connected to the tire valve. A valve core is arranged in the connecting nozzle. The valve core includes an inner nozzle and a switch assembly arranged on the inner nozzle. A medium channel is formed in the inner nozzle to communicate the liquid pipe and the external channel. The switch assembly includes an output member and a sealing member. The sealing member is used to close the medium channel. The output member can move towards the liquid pipe under the action of an external force to open the medium channel, and the output member can move towards the outside under the action of an external force to close the medium channel. Therefore, when connecting to the tire valve, the air needle abuts against the output member to open the medium channel and introduce the liquid into the tire. When not connected to the tire valve, the internal acting force restores the sealing member to close the medium channel, thereby effectively preventing the situation that when the bottle body is not connected to the tire, the air pump is started first and the tire repair liquid accidentally outputs, causing trouble in cleaning.

[0009] Further, the sealing member is a plug, and the output member is a push rod. The push rod axially penetrates through the inner nozzle. The plug is formed at the end of the push rod and closes the inner end of the inner nozzle. The outer end of the push rod extends into the connecting channel. A spring is sleeved on the push rod inside the inner nozzle. A retaining wall cooperating with the spring is arranged on one side of the medium channel close to the plug. Two protrusions cooperating with the other end of the spring are arranged on the push rod. When the connecting channel is connected to the outside, the push rod moves towards the liquid pipe under the action of an external force, the spring is compressed, and a gap is formed between the plug extending out of the inner end of the inner nozzle and the inner nozzle to conduct the outlet channel and the medium channel.

[0010] In the above technical solution, the switch assembly is composed of a push rod, a plug and a spring. When the connecting sleeve is connected to the outside (tire valve), the push rod is pushed and moves towards the liquid pipe direction. The spring is compressed between the protrusion and the retaining wall. The plug extends out of the inner end of the inner nozzle, and a gap is formed between the plug and the inner nozzle to conduct the liquid outlet channel and the medium channel. The tire repair liquid can flow into the tire valve through the medium channel. When the connecting sleeve is not connected to the tire valve part, the elastic force of the spring acts on the push rod, and the push rod moves outwards. The plug resets and abuts against the end of the inner nozzle to close the medium channel, which can prevent accidental liquid output. The protrusion can effectively compress the spring on the push rod and improve the structural strength of the push rod at the same time.

[0011] Preferably, a reinforcing block is formed between the protrusion and the plug on the push rod, and the reinforcing block is located inside the spring. In this technical solution, the setting of the reinforcing block improves the structural strength of the push rod. At the same time, when the spring moves, it plays a certain guiding role to prevent the spring from moving out of position.

[0012] Preferably, a retaining block is formed outward at the outer end of the inner nozzle, and a round block is formed on the outer side of the push rod. A through hole is constructed in the middle of the retaining block, and both sides of the through hole are in abutting cooperation with the protrusion and the round block. There are outlets communicated with the medium channel on both sides of the retaining block. In this technical solution, the cooperation between the retaining block and the round block plays an inward limiting role on the push rod to prevent the end of the push rod from being pushed into the medium channel and unable to recover; the cooperation between the retaining block and the protrusion plays an outward limiting role on the push rod; the outlet is convenient for medium communication.

[0013] Preferably, a washer is formed on the outer side of the retaining block, and a retaining ring for cooperating with the washer is provided on the inner wall of the connecting channel. In this technical solution, the setting of the washer enables the outer end of the inner nozzle to better cooperate with the retaining ring to play an axial limiting role, and improves the structural strength of the retaining block at the same time.

[0014] Preferably, an inclined wall is circumferentially provided in the liquid outlet channel, and an elastic wall for cooperating with the inclined wall is circumferentially provided on the side wall of the inner nozzle. In this technical solution, the cooperation between the inclined wall and the elastic wall can prevent the inner nozzle from moving towards the inner side of the connecting nozzle to a certain extent, playing an axial limiting role. At the same time, the setting of the elastic wall is convenient for installation.

[0015] Preferably, a sealing ring is sleeved on the front part of the inner nozzle, and when the plug closes the front end of the inner nozzle, it abuts against the sealing ring. In this technical solution, since the plug and the inner nozzle are designed to be separable, a sealing ring is provided at the front end of the inner nozzle to improve the sealing effect and prevent liquid leakage.

[0016] Preferably, several steps are formed at the front part of the connecting nozzle and are tightly arranged in the liquid pipe. In this technical solution, several steps are formed at the front part of the connecting nozzle and are tightly arranged in the liquid pipe, so the connection is more firm, not easy to disconnect and has good sealing performance.

[0017] Preferably, an internal thread for external connection is provided on the inner wall of the connection channel. In this technical solution, the internal thread in the connection channel is used to connect with the tire valve, which is very convenient and can prevent liquid leakage.

[0018] Preferably, several anti-slip rings are provided on the outer wall of the connection sleeve. In this technical solution, the anti-slip rings make the installation of the one-way valve more convenient and not easy to slip. Description of the Drawings

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the liquid pipe one-way valve.

[0020] Figure 2 It is a front structural schematic diagram of the liquid pipe one-way valve.

[0021] Figure 3 It is a sectional structural schematic diagram of the liquid pipe one-way valve in the A-A direction.

[0022] Figure 4 It is an installation schematic diagram of the valve core and the connection nozzle.

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the connection sleeve.

[0024] Figure 6 It is a three-dimensional structural schematic diagram of the valve core.

[0025] Figure 7 It is a three-dimensional structural schematic diagram of the inner nozzle.

[0026] Figure 8 It is a three-dimensional structural schematic diagram of the switch assembly.

[0027] Figure 9 It is a three-dimensional structural schematic diagram of the push rod. Detailed Embodiments

[0028] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more, unless otherwise clearly defined.

[0031] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher horizontal level than the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature is at a lower horizontal level than the second feature.

[0033] Such as Figures 1 to 9A liquid pipe check valve as shown includes a valve body. The valve body includes a connecting nozzle 1 inserted into the outlet of the liquid pipe and a connecting sleeve 2 partially sleeved on the connecting nozzle 1. Another part of the inner side of the connecting sleeve 2 forms a connecting channel 3. An outlet channel 4 communicating with the liquid pipe and the connecting channel 3 is formed in the connecting nozzle 1. A valve core 5 is arranged in the outlet channel 4. The valve core 5 includes an inner nozzle 6 positioned in the outlet channel 4 and a switch assembly mounted on the inner nozzle 6. A medium channel 7 communicating with the outlet channel 4 and the connecting channel 3 is formed inside the inner nozzle 6. The switch assembly at least includes a sealing member for closing the medium channel 7 and an output member connected to the sealing member with its outer end extending into the connecting channel 3. The output member can move inward under an external action to push open the sealing member and open the medium channel 7, or move outward under the action of an elastic restoring force to drive the sealing member to close the medium channel 7.

[0034] In the above technical solution, a check valve is provided at the end of the liquid pipe. The connecting nozzle of the check valve is inserted on the liquid pipe, and a connecting sleeve is sleeved outside the connecting nozzle. A connecting channel is formed on the inner side of the outer part of the connecting sleeve to connect with the tire valve. A valve core is arranged in the connecting nozzle. The valve core includes an inner nozzle and a switch assembly arranged on the inner nozzle. A medium channel is formed in the inner nozzle to communicate the liquid pipe and the external channel. The switch assembly includes an output member and a sealing member. The sealing member is used to close the medium channel. The output member can move towards the liquid pipe direction under an external force to open the medium channel, and the output member can move towards the outside under an external force to close the medium channel. Therefore, when connecting with the tire valve, the inflation needle presses on the output member to open the medium channel and introduce the liquid into the tire. When not connected with the tire valve, the internal acting force restores the sealing member to close the medium channel, thereby effectively preventing the situation that when the bottle body is not connected to the tire, the inflation pump is started first and the tire repair liquid accidentally outputs, causing trouble in cleaning.

[0035] Further, the sealing member is a plug 8, and the output member is a push rod 9. The push rod 9 axially penetrates through the inner nozzle 6. The plug 8 is formed at the end of the push rod 9 and closes the inner end of the inner nozzle 6. The outer end of the push rod 9 extends into the connecting channel 3. A spring 10 is sleeved on the push rod 9 inside the inner nozzle 6. A stop wall 11 cooperating with the spring 10 is arranged on one side of the medium channel 7 close to the plug 8. Two protrusions 12 cooperating with the other end of the spring 10 are arranged on the push rod 9. When the connecting channel 3 is connected to the outside, the push rod 9 moves towards the liquid pipe direction under an external force, the spring 10 is compressed, and a gap is formed between the plug 8 extending out of the inner end of the inner nozzle 6 and the inner nozzle 6 to conduct the outlet channel 4 and the medium channel 7.

[0036] In the above technical solution, the switch assembly is composed of a push rod, a plug and a spring. When the connecting sleeve is connected to the outside (tire valve), the push rod is pushed to move toward the liquid pipe, the spring is compressed between the protrusion and the retaining wall, and a gap is formed between the inner end of the plug extending out of the inner nozzle and the inner nozzle to conduct the liquid outlet channel and the medium channel, and the tire repair liquid can flow into the tire valve through the medium channel; when the connecting sleeve is not connected to the tire valve, the elastic force of the spring acts on the push rod, the push rod moves outward, the plug is reset to press against the end of the inner nozzle to close the medium channel, and the liquid can be prevented from being accidentally discharged. The protrusion can effectively compress the spring on the push rod and improve the structural strength of the push rod. The protrusion is provided with a notch 100 to cooperate with the spring.

[0037] Furthermore, a reinforcing block 13 is formed on the push rod 9 between the protrusion 12 and the plug 8, and the reinforcing block 13 is located inside the spring 10. In this technical solution, the setting of the reinforcing block improves the structural strength of the push rod, and at the same time, when the spring moves, it plays a certain guiding role to prevent the spring from moving out of position.

[0038] Furthermore, a stopper 14 is formed outwardly at the outer end of the inner nozzle 6, a round block 15 is formed on the outer side of the push rod 9, a through hole 16 is constructed in the middle of the stopper 14, and the two sides of the stopper 14 are abutted with the protrusion 12 and the round block 15, and the two sides of the stopper 14 are provided with an outlet 17 connected to the medium channel 7. In this technical solution, the stopper and the round block cooperate to limit the push rod inward, preventing the end of the push rod from being pushed into the medium channel and unable to recover; the stopper and the protrusion cooperate to limit the push rod outward; the outlet facilitates the medium to communicate.

[0039] Furthermore, a gasket 18 is formed on the outer side of the stopper 14, and a retaining ring 19 is provided on the inner wall of the connecting channel 3 to cooperate with the gasket 18. In this technical solution, the provision of the gasket enables the outer end of the inner nozzle to better cooperate with the retaining ring to play an axial limiting role, while improving the structural strength of the stopper.

[0040] Furthermore, an inclined wall 20 is provided in the inner circumference of the liquid outlet channel 4, and an elastic wall 21 is provided in the circumference on the side wall of the inner nozzle 6 to cooperate with the inclined wall 20. In this technical solution, the cooperation between the inclined wall and the elastic wall can prevent the inner nozzle from moving toward the inside of the connecting nozzle to a certain extent, play an axial limiting role, and the elastic wall is easy to install.

[0041] Furthermore, a sealing ring 22 is sleeved on the front of the inner mouth 6, and the plug 8 abuts against the sealing ring 22 when it is closed at the front end of the inner mouth 6. In this technical solution, since the plug and the inner mouth are detachable, the sealing ring at the front end of the inner mouth improves the sealing effect and prevents liquid from leaking.

[0042] Furthermore, the front part of the connection nozzle 1 is formed with a plurality of steps 23 and is tensionedly arranged in the liquid pipe. In this technical solution, the front part of the connection nozzle is formed with a plurality of steps and is tensionedly arranged in the liquid pipe, so that the connection is more firm, not easy to be disengaged and has good sealing performance.

[0043] Furthermore, an internal thread 24 connected to the outside is provided on the inner wall of the connecting channel 3. In this technical solution, the internal thread in the connecting channel is used to connect with the tire valve, which is very convenient and prevents leakage.

[0044] Furthermore, a plurality of anti-skid rings 25 are provided on the outer wall of the connecting sleeve 2. In this technical solution, the provision of the anti-skid rings makes the installation of the one-way valve more convenient and not easy to slip.

[0045] In this specific embodiment, due to the existing user's negligence or improper use, the inflation pump is started before the liquid outlet is connected to the tire, which will cause the tire repair fluid to be accidentally discharged, resulting in cleaning troubles and driving safety. The above scheme is to set a one-way valve on the liquid pipe outlet, the connecting nozzle of the one-way valve is plugged into the liquid pipe, the outer side of the connecting nozzle is sleeved with a connecting sleeve, the outer inner side of the connecting sleeve forms a connecting channel connected to the tire air nozzle, a valve core is set in the connecting nozzle, the valve core includes an inner nozzle and a switch assembly set on the inner nozzle, a medium channel is formed in the inner nozzle to connect the liquid pipe and the external channel, when the connecting nozzle is connected When the connecting sleeve is connected to the tire air nozzle, the push rod is pushed to move toward the liquid pipe, the spring is compressed between the protrusion and the baffle wall, and the inner end of the plug extending out of the inner nozzle forms a gap with the inner nozzle to connect the liquid outlet channel and the medium channel, and the tire repair fluid can flow into the tire air nozzle through the medium channel; when the connecting sleeve is not connected to the tire air nozzle, the elastic force of the spring acts on the push rod, the push rod moves outward, the plug is reset to press against the end of the inner nozzle to close the medium channel, which can prevent accidental discharge of liquid, thereby effectively preventing the situation where the air pump is started first when the bottle body is not connected to the tire, and the tire repair fluid is accidentally discharged, causing trouble for cleaning.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A liquid pipe one-way valve, comprising a valve body, characterized in that: The valve body comprises a connecting nozzle (1) inserted into the outlet of the liquid pipe and a connecting sleeve (2) partially sleeved on the connecting nozzle (1), and the other part of the connecting sleeve (2) forms a connecting channel (3) on the inner side; a liquid outlet channel (4) communicating with the liquid pipe and the connecting channel (3) is formed in the connecting nozzle (1), a valve core (5) is provided in the liquid outlet channel (4), the valve core (5) comprises an inner nozzle (6) positioned in the liquid outlet channel (4) and a switch assembly mounted on the inner nozzle (6); a medium channel (7) is formed on the inner side of the inner nozzle (6) and communicates with the liquid outlet channel (4) and the connecting channel (3); the switch assembly comprises at least a sealing member for closing the medium channel (7), and an output member connected to the sealing member and having an outer end extending into the connecting channel (3); the output member can move inwards under the action of an external force to push the sealing member away to open the medium channel (7), or move outwards under the action of an elastic restoring force to drive the sealing member to close the medium channel (7).

2. A liquid pipe one-way valve according to claim 1, characterized in that: The sealing member is a plug (8), and the output member is a push rod (9). The push rod (9) is axially inserted into the inner nozzle (6). The plug (8) is formed at the end of the push rod (9) and is sealed on the inner end of the inner nozzle (6). The outer end of the push rod (9) extends into the connecting channel (3). A spring (10) is sleeved on the push rod (9) and is inside the inner nozzle (6). A retaining wall (11) cooperating with the spring (10) is provided on one side of the medium channel (7) close to the plug (8). Two protrusions (12) cooperating with the other end of the spring (10) are provided on the push rod (9). When the connecting channel (3) is connected to the outside, the push rod (9) moves toward the liquid pipe under the action of an external force, the spring (10) is compressed, and a gap is formed between the inner end of the plug (8) extending out of the inner nozzle (6) and the inner nozzle (6) to conduct the liquid outlet channel (4) and the medium channel (7).

3. A liquid pipe one-way valve according to claim 2, characterized in that: A reinforcement block (13) is formed on the push rod (9) between the protrusion (12) and the plug (8), and the reinforcement block (13) is located on the inner side of the spring (10).

4. A liquid pipe one-way valve according to claim 2, characterized in that: A stopper (14) is formed outwardly at the outer end of the inner nozzle (6), a round block (15) is formed on the outer side of the push rod (9), a through hole (16) is formed in the middle of the stopper (14) on both sides of which abut against the protrusion (12) and the round block (15), and outlets (17) communicating with the medium channel (7) are provided on both sides of the stopper (14).

5. A liquid pipe one-way valve according to claim 4, characterized in that: A gasket (18) is formed on the outer side of the stopper (14), and a stopper (19) matching the gasket (18) is provided on the inner wall of the connecting channel (3).

6. A liquid pipe one-way valve according to claim 2, characterized in that: The liquid outlet channel (4) is provided with an inclined wall (20) in the inner circumferential direction, and the side wall of the inner nozzle (6) is provided with an elastic wall (21) that cooperates with the inclined wall (20) in the circumferential direction.

7. A liquid pipe one-way valve according to claim 2, characterized in that: The front part of the inner nozzle (6) is sleeved with a sealing ring (22), and the plug (8) abuts against the sealing ring (22) when it is closed at the front end of the inner nozzle (6).

8. The liquid pipe one-way valve according to claim 1, characterized in that: A plurality of steps (23) are formed on the front of the connection nozzle (1) and are tensionedly arranged in the liquid pipe.

9. The liquid pipe one-way valve according to claim 1, characterized in that: An inner wall of the connecting channel (3) is provided with an internal thread (24) connected to the outside.

10. A liquid pipe one-way valve according to claim 9, characterized in that: A plurality of anti-slip rings (25) are provided on the outer wall of the connecting sleeve (2).

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