JP3782385B2 - Sealing agent injection / extraction hose set - Google Patents

Description

【００５２】
【表２】

【００５３】
【発明の効果】
本発明は叙上の如く構成しているため、パンクしたタイヤへのシーリング剤の注入作業、及び注入された使用済シーリング剤のタイヤからの抜き取り回収作業を便宜にかつ清浄に行うことができる。又特に、低温環境下での注入作業効率を高めつつ、前記抜き取り回収作業効率を向上することができ、しかもホースの化粧用外箱等へのコンパクトな収納を可能とする。
【図面の簡単な説明】
【図１】本発明の注入・抜き取り兼用ホースセットの一実施例が、シーリング剤容器に連結される前の保管状態を概念的に示す正面図である。
【図２】シーリング剤容器の壁体を拡大して示す断面図である。
【図３】第１のホース体をシーリング剤容器に接続した状態を示す断面図である。
【図４】注入作業の状態を示す線図である。
【図５】抜き取り作業の状態を示す線図である。
【図６】接続アダプタを拡大して示す断面図である。
【図７】従来のパンク修理システム（一体システム）を説明する線図である。
【図８】分離システムにおける問題を説明する線図である。
【符号の説明】
２ シーリング剤容器
２０ 第１のホース体
２１ 接続アダプタ
２１Ａ、２１Ｂ 第１、第２の接続管部
２１Ｃ フランジ部
２２ 第２のホース体[0001]
BACKGROUND OF THE INVENTION
The present invention can be used for both the injection of a sealing agent into a punctured tire and the extraction of the injected sealing agent from a tire, and the sealing agent that can be used to clean and collect used sealing agent conveniently. This relates to a hose set for both injection and extraction.
[0002]
[Background Art and Problems to be Solved by the Invention]
In recent years, systems for repairing punctures quickly by injecting a sealing agent into punctured tires have been widely used.
[0003]
In this system, as schematically shown in FIG. 7, a cap having an opening / closing valve e is attached to a metal pressure-resistant container b containing a sealing agent a, and an inlet e1 of the opening / closing valve e and a high-pressure air source are provided. c and the discharge port e2 of the opening / closing valve e and the tire air valve t are connected by pressure-resistant hoses h1 and h2, respectively.
[0004]
Then, by supplying the high-pressure air from the high-pressure air source c to the opening / closing valve e, the sealing agent a accommodated in the container b is pumped into the tire, and then the high-pressure air subsequently filled is used. Pump up the tires. By running the tire in this state, the puncture hole is quickly sealed.
[0005]
However, since the system is an emergency repair, it is taken immediately after the emergency repair to a tire repair place such as an automobile maintenance shop and replaced with a new tire or a repair process is performed by a professional repairer.
[0006]
At this time, it is necessary to remove the sealing agent from the tire that has been repaired urgently. Conventionally, after removing the tire bead from the rim and carefully removing the tire from the rim with a tire changer, the tire is raised and collected at the bottom. The sealant is scooped out in a cup. However, this method has a problem that the sealing agent easily leaks from the tire when it is removed by the tire changer, and the surroundings are soiled.
[0007]
Therefore, it is proposed to insert a hose into the tire from the valve mounting hole from which the air valve has been removed, and then remove the sealing agent. However, because the frequency of tire puncture is very low, a dedicated hose for removal at the tire repair site It was difficult to keep the collection container and the storage container in a permanent manner, making it difficult to implement.
[0008]
On the other hand, instead of the system, a non-pressure-resistant easily deformable plastic container is used, and the container is manually pressed (pressed) to inject the sealing agent into the tire. A system for pumping up by connecting a compressor is introduced, for example, in Patent Document 1 (the former may be referred to as an integrated system and the latter as a separation system). In this separation system, since the container itself is inexpensive, it is possible to collect the unused sealing agent in which the quality guarantee has expired together with the container, and it can be expected that the cost can be reduced and adverse effects on the environment can be prevented.
[0009]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-166713 [0010]
Therefore, the present inventor has paid attention to the separation system and proposed that the used container once used for the puncture repair is also used as a collection container when the sealing agent is removed from the tire at the tire repair place. That is, as shown in FIG. 8, the sealing agent a in the tire is directly applied to the container i through the hose j inserted from the valve mounting hole t0 using the suction force generated when the plastic container i is returned from the deformation. It is collected. By doing so, it is not necessary to always have a dedicated collection container at the tire repair place, and the collection work can be performed conveniently and cleanly. In addition, this can contribute to the unification of processing routes, such as being able to be used as a processing route for collecting and discarding unused sealants whose quality assurance has expired.
[0011]
For this purpose, it is important that the hose j used for injection can be used for extraction.
[0012]
At this time, in the extraction operation, as shown in the previous figure, it is necessary to secure a length of the hose j of about 300 to 500 mm for the purpose of sucking the plastic container i positioned lower than the tire. However, when the length of the hose is set to 300 mm or more, there is a problem that when the injection operation is performed in a low temperature environment, the injection property is remarkably impaired due to an increase in the viscosity of the sealing agent. In addition, since the hose j is too long, it is difficult to store the hose j compactly in a cosmetic outer box of the product, for example, and the outer box or the like is increased in size. When the hose j is folded and stored, the bent portion is flattened by suction at the time of extraction, which makes extraction difficult.
[0013]
The present invention has been made in view of such a situation, and enables compact storage in, for example, a cosmetic outer box, while facilitating extraction of a sealing agent and injection in a low temperature environment. The purpose is to provide a hose set for both injection and extraction of sealants.
[0014]
[Means for Solving the Problems]
In order to achieve the above object, the invention of claim 1 of the present application can connect one end to a sealing agent container for containing a sealing agent, and connect the other end to an air valve of a punctured tire, thereby A first hose body capable of repairing a punctured tire by injecting a sealing agent, and
The injected sealing can be connected to the other end of the first hose body via a connection adapter and inserted into the tire through a valve mounting hole from which the air valve of the tire removed from the vehicle is removed. A second hose body for extension that allows the agent to be extracted and collected;
The first hose body has a length L1 of 50 to 250 mm, the second hose body has a length L2 of 100 to 250 mm, and a total length L1 + L2 of 300 to 500 mm,
Moreover, the connection adapter has an outer diameter Do at the outer end larger than the inner diameter Di of the inner holes Di of the first and second hose bodies in the range of 0 to 0.5 mm, and the first and second hoses. It has the 1st, 2nd connecting pipe part connected by inserting in the inner hole of a body, It is characterized by the above-mentioned.
[0015]
According to a second aspect of the present invention, the connection adapter is characterized in that a flange portion is provided between the first and second connection pipe portions.
[0016]
According to a third aspect of the present invention, the first and second hose bodies have the same inner diameter Di of the inner holes.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a front view conceptually showing a storage state before an injection / extraction combined hose set 1 (hereinafter sometimes referred to as a hose set 1) of the present invention is connected to a sealant container 2. FIG.
[0018]
In FIG. 1, a hose set 1 includes a first hose body 20 used for injecting a sealing agent into a tire T, and the first hose body 20 connected to the first hose body 20 via a connection adapter 21. The first hose body 20 and the second hose body 22 for extension used for extracting the sealing agent from the tire T are provided.
[0019]
The sealing agent container 2 for storing the sealing agent includes a cylindrical barrel portion 5 and a small-diameter neck portion 6 provided at an upper end thereof and having an outlet 4. In this example, the barrel portion 5 and the neck portion are provided. 6 is illustrated as being formed in a continuous manner through a conical shoulder 7.
[0020]
As is well known, the sealing agent is a liquid material having a high viscosity of, for example, a viscosity of about 40 cps (20 ° C.) mainly composed of rubber latex, and is composed of a tackifier or an antifreeze agent as required. .
[0021]
Here, in the said sealing agent container 2, the said trunk | drum 5 is pressed (squeezed) by the hand, and the sealing agent accommodated is pushed out from the taking-out port 4 by the volume reduction accompanying it, and is inject | poured in a tire. Thus, since high pressure air as in the prior art is not used, the sealing agent container 2 does not require high pressure resistance, and therefore can be provided at low cost as a non-pressure resistant container using synthetic resin. Become. The pressure resistance required for the sealant container 2 is in the range of 200 to 450 kPa, which is much higher than the metal container (pressure resistance is 1 Mpa or more) of the conventional system (the integrated system) using high-pressure air. It is low.
[0022]
However, in such a sealant container 2,
(1) Easy to squeeze by hand;
(2) Prevent gas and ammonia from escaping from the sealing agent by gas barrier properties (gas permeation resistance) and ensure a long period of quality assurance for the sealing agent;
(3) Ensure the mechanical strength and weather resistance of the container body itself;
Is important.
[0023]
Therefore, in the sealing agent container 2, the barrel portion 5 is formed in a cylindrical shape for the squeezability of the above (1) to make the transformation smooth and easy. In particular, in this example, the barrel portion 5 and the neck portion 6 are formed. Are further easily deformed by joining the shoulder portions 7 together.
[0024]
For the above (2) and (3), at least the peripheral wall of the body portion 5 is provided with an inner layer 5i, an intermediate layer 5m, and an outer layer 5o using at least two kinds of thermoplastic resins, as shown in FIG. The intermediate layer 5m is formed of a gas barrier resin while having a laminated structure including three or more layers.
[0025]
As the gas barrier resin, saponified ethylene / vinyl acetate copolymer, polyvinylidene chloride, polyacrylonitrile, polymethaxylylenediamine adipate and the like are known, and any of these can be suitably used. In particular, a saponified product of an ethylene / vinyl acetate copolymer, such as an ethylene / vinyl alcohol copolymer (EVOH), can be more preferably used from the viewpoint of cost, gas barrier properties, environmental problems, and the like.
[0026]
For the inner layer 5i and the outer layer 5o, polyethylene, polypropylene, polyester or the like can be used to impart mechanical strength (including durability and impact resistance) and weather resistance. At this time, the type of the synthetic resin can be different between the inner layer 5i and the outer layer 5o, but it is preferable to use the same synthetic resin from the viewpoint of productivity. Moreover, in the sealing agent container 2, it is necessary not only to improve the squeezability, but also to be able to be repeatedly deformed without causing cracks or breakage. Therefore, in this example, emphasis is placed on flexibility rather than rigidity. Low density polyethylene is used.
[0027]
It should be noted that the thickness of the peripheral wall of the body portion 5 is particularly determined when the middle layer 5m is formed of an ethylene / vinyl alcohol copolymer (EVOH) and the inner layer 5i and the outer layer 5o are formed of low-density polyethylene. The thickness tm of the middle layer 5m is preferably 0.1 to 0.8 mm, and the thicknesses ti and to of the inner layer 5i and the outer layer 5o are preferably in the range of 0.3 to 0.6 mm. If the thickness tm is less than 0.1 mm, the gas barrier property is insufficient and it is difficult to guarantee the quality of the sealing agent for a long time. Conversely, if the thickness tm exceeds 0.8 mm, the quality becomes excessive and the cost increases. It becomes.
[0028]
If the thicknesses ti and to are less than 0.3 mm, it is easy to break and it is difficult to secure the required pressure strength (200 to 450 kPa). Conversely, if it exceeds 0.6 mm, it is hard and not easily deformed. It is disadvantageous to sex.
[0029]
In the storage state, the sealant container 2 is protected in a state where the take-out port 4 is sealed with an easy-to-break packing material 8 such as aluminum foil and is detachably screwed to the neck portion 6 as is well known. It is protected by a cap 9.
[0030]
When the sealing agent is injected, as shown in FIG. 3, after removing the protective cap 9, one end E <b> 1 of the first hose body 20 in the hose set 1 is connected to the neck 6 via the connecting cap 3. .
[0031]
In this example, the connecting cap 3 has a tubular connecting pipe portion 11 for connecting a first hose body projecting upward from an upper lid portion 10A of the cap body 10 screwed to the neck portion 6. Further, a sharp pipe portion 12 through which the packing material 8 can be broken is provided on the lower surface of the upper lid portion 10A. The upper end of the connecting pipe portion 11 and the lower end of the sharp pipe portion 12 Conduction is made through a conduction hole 3A which is a hole. In addition, it is preferable to connect the 1st hose body 20 and the connection cap 3 previously at the time of storage (FIG. 1).
[0032]
Then, as shown in FIG. 4, after the other end E2 of the first hose body 20 is inserted and connected to the air valve t of the punctured tire T, the sealing agent container 2 is squeezed by hand, and the volume reduction associated therewith The sealing agent can be injected into the tire from the air valve t through the first hose body 20. When injecting, the valve core is previously removed from the air valve t. After the injection, the valve core is returned to the air valve t from which the first hose body 20 is removed, and the tire is pumped up by the compressor in this state, and then the tire is immediately run for a predetermined time, usually about 10 minutes. By repairing the puncture hole as soon as possible.
[0033]
However, these emergency repaired tires need to be brought into a tire repair place such as an automobile maintenance shop immediately after the emergency repair, replaced with a new tire, or repaired for a puncture hole by a professional repairer. At this time, the first hose body 20 and the sealing agent container 2 used at the time of injection are brought into a tire repair place together with the unused second hose body 22, and the sealing agent is used from the tire which has been repaired emergencyly using these. Is removed and collected in the sealant container 2.
[0034]
Specifically, as shown in FIG. 5, one end E1 of the second hose body 22 for extension is connected to the other end E2 of the first hose body 20 connected to the sealant container 2 via a connection adapter 21. F1 is connected, and the other end F2 is inserted into the tire T from the valve mounting hole to exposed by removing the air valve t of the tire T. Then, the deformation / return of the sealant container 2 is repeatedly performed by hand, and the sealant is extracted and collected in the sealant container 2 by using a suction force generated when the sealant container 2 is returned.
[0035]
By doing so, it is not necessary to always have a dedicated collection container or hose at the tire repair place, and the collection work can be performed conveniently and cleanly. In addition, it is expected that a unified processing route can be expected, for example, the recovered product can be placed on a processing route for recovering and discarding unused sealing agents whose quality assurance has expired.
[0036]
Here, in order to extract the sealing agent, as shown in the figure, the sealing agent container 2 needs to be set up and sucked. At this time, it is preferable to suck the sealing agent at a lower position than the tire T. For this purpose, a hose length of at least 300 mm is required. However, when the hose length is 300 mm or more, conversely, the resistance when injecting the sealing agent increases, and in a low temperature environment such as winter, the injecting operation is coupled with an increase in the viscosity of the sealing agent as the temperature decreases. The problem of making it difficult.
[0037]
On the other hand, if the hose length is greater than 250 mm, which is too long compared to the sealing agent container 2, for example, the hose cannot be stored compactly in the outer packaging box of the sealing agent container 2, and the outer packaging or the like is not suitable. Incurs the necessary increase in size. This is because the hose needs to have sufficient rigidity so as not to be crushed by suction at the time of extraction, and if the hose is folded and stored, the bent portion is flattened by suction. This is because the extraction becomes difficult.
[0038]
Therefore, in the present invention, as described above, the first hose body 20 and the second hose body 22 are configured to be connectable via the connection adapter 21, and at the time of injection, the first hose body 20 is configured. Only the second hose body 22 is connected to the first hose body 20 when used for extraction.
[0039]
At this time, as shown in FIG. 1, the length L1 of the first hose body 20 is 50 to 250 mm, the length L2 of the second hose body 22 is 100 to 250 mm, and the sum L1 + L2 of the lengths is 300 to 500 mm. Is necessary. When the length L1 is less than 50 mm, it becomes too close to the tire T to be difficult to inject, and conversely, when it is more than 250 mm, the injection property under a low temperature environment such as winter is remarkably hindered, and the material cost and storage property are also reduced. Cause unnecessary deterioration. Further, when the length L2 is less than 100 mm and the sum L1 + L2 is less than 300 mm, it is difficult to remove the sealing agent. Conversely, when the length L2 is greater than 250 mm and the sum L1 + L2 is greater than 500 mm, the material cost and the storage property are unnecessary. Cause serious deterioration.
[0040]
Further, in the connection adapter 21, as shown in FIG. 6, the first and second connection pipe portions 21A and 21B inserted into the inner holes 20i and 22i of the first and second hose bodies 20 and 22 are provided. Provide at the outer edge. In this example, a flange portion 21C is provided between the first and second connecting pipe portions 21A and 21B, and is fitted by contacting the end surfaces of the first and second hose bodies 20 and 22. The depth is regulated.
[0041]
Here, the outer diameters DoA and DoB (referred to collectively as Do) of the connecting pipe portions 21A and 21B are the inner diameters DiA and DiB (generic names) of the inner holes 20i and 22i of the first and second hose bodies 20 and 22, respectively. The difference DoA-DiA and the difference DoB-DiB are both set to be larger than 0 mm and 0.5 mm or less. If the difference is less than 0 mm, air will enter the hose body from the connecting portion during extraction, making it difficult to suck the sealing agent. Conversely, if the difference exceeds 0.5 mm, the fitting will be too tight and the first and second Connection with the hose bodies 20 and 22 is made difficult. The first and second hose bodies 20 and 22 preferably have the same inner diameter DiA and DiB in order to facilitate the flow of the sealing agent, and in particular, the outer diameter is preferably the same. It is further preferable for common use. The first and second hose bodies 20 and 22 are preferably formed of a transparent (including translucent) resin material through which the inside can be seen in order to grasp the flow of the sealing agent.
[0042]
In the first and second hose bodies 20 and 22, it is desirable to use a resin material having a bending stiffness of 30 to 150 MPa in order to facilitate the injection and extraction of the sealing agent. If the bending stiffness is less than 30 Mpa, the hose bodies 20 and 22 are too soft, and it is difficult to accurately insert the tip of the hose into the portion where the sealing agent is accumulated at the time of extraction. Also occurs. On the contrary, if the bending stiffness exceeds 150 MPa, the hose bodies 20 and 22 are too hard to bend, and if they are bent forcibly, the hose bodies 20 and 22 are broken. .
[0043]
Here, the “bending stiffness” is a bending stiffness of a plastic material measured in accordance with JIS K7106 “Bending stiffness test method of plastic by cantilever”. For example, PVC (polyvinyl chloride) is about 10 Mpa, EVA (ethylene vinyl acetate) is about 50 Mpa, PE (polyethylene) is about 130 Mpa, and PP (polypropylene) is about 700 Mpa. Therefore, EVA and PE can be preferably used.
[0044]
In the connecting pipe portions 21A and 21B, the length L0 of the outer end from the flange portion 21C is preferably 5 mm to 20 mm. If the length is less than 5 mm, the connection is insufficient, and the hose bends during extraction. The hose body 20 or the hose body 22 may come off. On the other hand, when the length L0 exceeds 20 mm, it is difficult to connect and an unnecessary increase in material cost is caused. In this example, in order to facilitate connection, a tapered surface portion having an angle θ with the axis of 8 to 30 degrees is formed at the outer ends of the connecting pipe portions 21A and 21B.
[0045]
In the connecting pipe portions 21A and 21B, the difference Do-DD between the inner diameter DD and the outer diameter Do is preferably set to 2.0 to 2.5 mm in order to make the flow of the sealing agent smooth. When the difference Do-DD is less than 2.0 mm, the rigidity of the connecting pipe portions 21A and 21B becomes insufficient, and the hose body 20 or the hose body 22 may come off when the hose bends during extraction. If it exceeds 5 mm, the workability of extraction is deteriorated, for example, the flow of the sealing agent is deteriorated.
[0046]
The first hose body 20 has an inner diameter Di that is 0.5 to 1 larger than the outer diameter of the valve stem (8.0 mm for passenger cars) in order to connect the first hose body 20 so as not to be disconnected from the air valve t during injection. For example, for passenger cars, the inner diameter Di is preferably set in a range of 7.0 to 7.5 mm. Further, in the second hose body 22, the outer diameter thereof is 2.0 to 2.5 mm larger than the inner diameter of the valve mounting hole t0 (11.58 mm for a passenger car) in order to be easily inserted and removed from the valve mounting hole t0. For example, for passenger cars, the outer diameter may be set in a range of 9.0 to 9.5 mm.
[0047]
As mentioned above, although especially preferable embodiment of this invention was explained in full detail, this invention is not limited to embodiment of illustration, It can deform | transform and implement in a various aspect.
[0048]
【Example】
A prototype hose set for both injection and extraction shown schematically in Fig. 1 was made in accordance with the specifications shown in Table 1. Using these, the injection workability of the sealing agent into the tire and the removal workability of the injected sealing agent from the tire were improved. Tested and evaluated each. The hose body and the connection adapter are both made of polyethylene resin, and the specifications of the sealing agent container are shown in Table 2.
[0049]
(1) Injection workability:
The first hose body was attached to the sealing agent container, and the workability when the sealing agent was injected from the air valve as shown in FIG. 4 was evaluated by ○ (good) and × (bad) by the operator's feeling. .
[0050]
(2) Extraction workability:
When the second hose body is connected to the used first hose body used in the injection work and the sealing agent in the tire is removed from the valve mounting hole as shown in FIG. The ring was evaluated as ○ (good) or × (bad).
[0051]
[Table 1]

[0052]
[Table 2]

[0053]
【The invention's effect】
Since the present invention is configured as described above, the operation of injecting the sealing agent into the punctured tire and the operation of extracting and collecting the injected used sealing agent from the tire can be performed conveniently and cleanly. In particular, it is possible to improve the extraction and collection work efficiency while improving the injection work efficiency in a low-temperature environment, and to enable compact storage of the hose in a cosmetic outer box or the like.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a front view conceptually showing a storage state before an embodiment of an injection / extraction hose set of the present invention is connected to a sealant container.
FIG. 2 is an enlarged cross-sectional view showing a wall of a sealant container.
FIG. 3 is a cross-sectional view showing a state in which the first hose body is connected to a sealing agent container.
FIG. 4 is a diagram showing a state of an injection operation.
FIG. 5 is a diagram showing a state of extraction work.
FIG. 6 is an enlarged cross-sectional view of the connection adapter.
FIG. 7 is a diagram illustrating a conventional puncture repair system (integrated system).
FIG. 8 is a diagram illustrating a problem in the separation system.
[Explanation of symbols]
2 Sealing agent container 20 1st hose body 21 Connection adapter 21A, 21B 1st, 2nd connection pipe part 21C Flange part 22 2nd hose body

Claims (3)

One end can be connected to a sealant container containing a sealant, and the other end can be connected to a pneumatic valve of a punctured tire, so that the punctured tire can be repaired quickly by injecting the sealant from the air valve. A first hose body;
The injected sealing can be connected to the other end of the first hose body via a connection adapter and inserted into the tire through a valve mounting hole from which the air valve of the tire removed from the vehicle is removed. A second hose body for extension that allows the agent to be extracted and collected;
The first hose body has a length L1 of 50 to 250 mm, the second hose body has a length L2 of 100 to 250 mm, and a total length L1 + L2 of 300 to 500 mm,
Moreover, the connection adapter has an outer diameter Do at the outer end larger than the inner diameter Di of the inner holes Di of the first and second hose bodies in the range of 0 to 0.5 mm, and the first and second hoses. A hose set for both injection and extraction of a sealing agent, comprising first and second connection pipe portions connected by being fitted into an inner hole of a body. The hose set for both injection and extraction of a sealing agent according to claim 1, wherein the connection adapter includes a flange portion between the first and second connection pipe portions. 3. The sealing agent injection / extraction hose set according to claim 1 or 2, wherein the inner diameter Di of the first and second hose bodies is the same.

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