JP3229607U - Resin hose - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a resin hose which can be cut to a desired length without using a ruler or a tape measure, and can easily confirm that the connection with a joint or the like is appropriate and no looseness has occurred. To do. SOLUTION: Direction indications 2 and 3 indicating a transportation direction of a fluid to be transported at regular intervals are provided on an outer peripheral surface of a resin hose 1. As for the direction display, a certain number of first direction displays 2 are provided, and then a second direction display 3 is provided, and this is repeated. Further, the dimensions of the direction indications 2 and 3 match the insertion depth of the resin hose into the joint or the like. [Selection diagram] FIG. 8

Description

The present invention relates to a resin hose. More specifically, it is easy to visually confirm the direction of the fluid transported by the resin hose, cut the resin hose to the desired length, and confirm the insertion depth when the resin hose is connected to a joint or the like. With respect to resin hoses with indications that allow.

Resin hoses are widely used for transporting liquids such as water and solvents and fluids such as gases such as air and gas. Resin hoses can be easily cut to the required length, and because of their excellent flexibility, they can be applied to various devices including moving parts, and various types of resin are used for water resistance and oil resistance. Resin hoses with unique characteristics such as sex are provided, and the range of use is expanding more and more.
The resin hose has a multi-layer structure in which the inner layer and the outer layer are composed of different types of resin to provide both high chemical resistance and tough wear resistance, and the resin hose is made of synthetic resin between the inner layer and the outer layer. A variety of products are manufactured, including those with reinforced threads and wires that can withstand extremely high pressure. Further, a hose not particularly provided with a reinforcing thread or the like may be called a tube, but hereinafter, these are referred to as a resin hose without particular distinction.

Resin hoses are usually distributed and stored wound on reels, cut to the required length according to the equipment and devices that transport liquids and gases, and used by connecting to the fittings of the equipment and equipment. However, it is not uncommon for a large number of resin hoses to be used depending on the device or equipment. It is necessary not only to connect the resin hose when installing equipment and equipment, but also to replace the old resin hose as appropriate. Therefore, it is necessary to quickly and appropriately connect and replace the resin hose. -It is important in terms of reducing maintenance costs and improving the operating rate.

By the way, when connecting or replacing the resin hose, it is important to grasp the direction of the fluid to be transported. In general, it goes without saying that the work of removing and replacing the resin hose can be safely performed if the valve on the upstream side is closed, but if the resin hose is accidentally removed while the valve on the upstream side is left open by mistake. There is even a danger that the fluid to be transported will be scattered or the pressure of the fluid to be transported will cause the resin hose to run wild.

Therefore, for example, as described in paragraph [0007] of Japanese Patent Application Laid-Open No. 2014-47880, short tubular markers on which the direction of the fluid flowing through the resin hose is printed are attached to both ends of the resin hose to form a fluid. It has been done to make it possible to visually recognize the flow direction of the hose.

Further, since attaching a short tubular marker to both ends of the resin hose each time the resin hose is connected reduces workability, the paragraph [0011] of Japanese Patent Application Laid-Open No. 2014-47880 also states. It is stated that instead of using a short tubular marker, a method of printing a direction symbol or the like on the hose can be considered. Further, [FIG. 3] of the same publication specifically discloses an invention in which the direction in which a fluid flows is printed directly on the surface of a resin hose and a protective film is provided on the printing direction.

In this way, the direction of the fluid transported by the resin hose connected to the device or equipment can be easily visually recognized, and the resin hose can be replaced while the valve on the upstream side is accidentally left open. The risk of going away can be greatly reduced. Further, if a resin hose in which the flow direction of the fluid is printed on the surface is used, the additional work required to indicate the direction of the fluid is extremely small, and the workability is hardly deteriorated.

However, the inventor of the present application considered that further problems remain in the connection and replacement of the resin hose and the inspection work. In other words, cutting a resin hose to a desired length can be done without difficulty by using a ruler or tape measure, but even this is complicated when handling a large amount of resin hose, so use a ruler or tape measure. It is preferable that the hose can be cut to a desired length.

In addition, if the connection between the resin hose and the joint is not made correctly, leakage may occur from the connection part or it may cause an accident such as the resin hose being pulled out. Therefore, the resin hose and the joint can be connected correctly. It is preferable to be able to easily confirm whether or not there is looseness. However, such confirmation is surprisingly difficult.

For example, a plug-in joint is disclosed in [Fig. 1] and the like of JP-A-2000-136895. This is commonly called a one-touch joint that can prevent the resin hose from coming off and maintain airtightness just by inserting the resin hose, and is widely used because of its simplicity. Since the part where the resin hose is held in place and airtightly is not visible from the outside when it is inserted into the insertion joint, it is visually judged whether this connection is normal or whether it is loose. Is very difficult.

Japanese Unexamined Patent Publication No. 2014-47880 Japanese Unexamined Patent Publication No. 2000-136895

The problem to be solved by the present invention is to solve the problems described above. That is, the direction of the fluid to be transported by the resin hose can be easily grasped, it can be cut to a desired length without using a ruler or a tape measure, the connection with a joint or the like is appropriate, and there is no looseness. Is to provide a resin hose that makes it possible to easily confirm.

(1) In order to solve the problems described above, in the present invention,
A resin hose mainly used for transporting fluids.
The resin hose is characterized in that the outer peripheral surface of the resin hose is provided with direction indications indicating the transport direction of the fluid transported by the resin hose at regular intervals in the length direction of the resin hose.

By providing a direction display that displays the transport direction of the fluid to be transported on the outer peripheral surface of the resin hose, it is possible to visually recognize the direction of the fluid flowing in the resin hose. In particular, when a device or device using a resin hose is stopped, the fluid flowing in the resin hose is often stopped, so even if the resin hose is transparent, the direction of the flowing fluid is determined. This is completely impossible, but the direction display makes this possible, and makes it possible to easily perform maintenance of devices and equipment such as replacement of resin hoses.

By the way, although the transportation direction of the fluid is displayed by the direction display, the resin hose itself does not necessarily mean that the fluid can be transported only in the direction indicated by the direction display. Needless to say, it is possible to transport the fluid in the opposite direction to the direction indication, or to transport the fluid in different directions depending on the time. The direction display is to ensure that the work such as closing the valve on the upstream side can be performed when replacing the resin hose used by connecting to the device or device, and it is connected to the device or device. It is the responsibility of the operator, etc. to ensure that the direction indication of the resin hose matches the direction of the fluid that is actually transported.

The present invention is characterized in that the direction indications are provided at regular intervals in the length direction of the resin hose, which means that, for example, the direction indications are provided every 10 cm on the surface of the long resin hose. The resin hose is usually stored while being wound on a reel, and is cut to a required length each time. The required length varies depending on the device or equipment that uses the resin hose, but due to the characteristics of the resin hose that can be flexibly bent, accuracy in millimeters is rarely required, and the length is usually about 10 cm. It is often used by cutting with. Therefore, if the surface of the resin hose is provided with direction indications every 10 cm in the length direction, the resin hose can be made to have a length of about 10 cm by cutting at the direction indication portion. This makes it possible to cut the resin hose to a desired length without using a ruler or a tape measure, and maintenance work such as connecting or replacing the resin hose to an apparatus or device can be efficiently performed.

It goes without saying that the interval of the direction display is not limited to 10 cm, and can be various intervals depending on the purpose. In a resin hose that is often used by cutting it into a short diameter with a small diameter, a direction indicator can be provided every 5 cm, for example, and in the opposite case, a larger interval can be provided.

Further, it is possible to provide a plurality of direction indications themselves arranged in a row on the surface of the resin hose. In this case, direction indications arranged in a row at exactly the same intervals can be provided on the front side and the back side (positions symmetrical with respect to the axis of the resin hose) on the surface of the resin hose. In this way, the situation that the direction display is difficult to see due to the angle when the resin hose is attached to the device or the device does not occur. It is also possible to add directional displays that line up at different intervals. In this way, there is an advantage that it is possible to cope with the case where the unit of the length for cutting the resin hose is different according to different uses and the like.

By the way, the direction display provided on the surface of the resin hose can be an arrow symbol as in the example shown as the first direction display (2) in FIG. This is because the arrow symbol is generally widely recognized as a direction indicator, and the operator can intuitively understand that the direction of the fluid transported by the resin hose is indicated.

Of course, the direction display is not limited to the arrow symbol, and may be a triangular symbol as in the example shown as the first direction display (2) in FIG. 3, or the first direction display (2) in FIG. It is also possible to use the ">" symbol as in the example shown as, or various other symbols. This is because if the operator can intuitively understand the direction of the fluid transported by the resin hose, the function as a direction display can be obtained.

(2) In order to solve the problems described above, in the present invention,
The direction display consists of at least two types, a first direction display and a second direction display.
The resin hose according to (1), wherein a certain number of first direction indications are provided and then a second direction indication is repeatedly provided.

As already explained, by providing direction indications at regular intervals in the length direction of the resin hose, the operator can easily understand the direction of the fluid transported by the resin hose visually, and a ruler or tape measure is used. It is possible to cut to a desired length without cutting, and maintenance work of equipment and devices using a resin hose can be efficiently performed. However, if the required length of the resin hose is long, the number of direction indications that must be counted will increase, which will be a burden on the operator and may cause an accident in which the resin hose is cut with the wrong length. Can also be. For example, in order to cut a resin hose having a direction indicator every 10 cm with a length of 1 m, 10 direction indicators must be counted, but for a worker who connects or replaces a large amount of resin hoses. This is not a small burden.

Therefore, in the present invention, the direction display is set to at least two types, a first direction display and a second direction display that can be visually discriminated, and after a certain number of first direction displays are provided, the second direction display is provided. Is provided, and this is repeated below. To give a specific example, as shown in FIG. 1A, four first direction indications (2) are provided at 10 cm intervals, and second direction indications (3) are also provided at 10 cm intervals. I will repeat it.

By doing so, the length of 50 cm unit is read in the second direction display, and in addition, the length of 10 cm unit is read in the first direction display, and the resin hose is cut to the required length. Can be done.

Needless to say, the number of the first direction display to be displayed and then the second direction display can be set in various ways depending on the purpose. For example, when the resin hose is often cut for a long time, nine first direction indications are provided and then a second direction indication is provided and this can be repeated, whereby the resin hose is cut for a long time. It is possible to reduce the burden on the worker when doing so.

Needless to say, it is possible to provide not only two types of directional display and a second directional display, but also three or more types of directional display as needed.

By the way, in the first direction display and the second direction display, for example, as shown as the first direction display (2) and the second direction display (3) in FIG. 1, the former is a hollow arrow. The symbol, the latter, can be a black arrow symbol. It does not hinder the operator from recognizing that the display has the same shape and displays the direction of the fluid transported by the resin hose, and easily recognizes that the second direction display appears at regular intervals. Because it can be done. Similarly, as shown in the first direction display (2) and the second direction display (3) in FIG. 3, the former is a hollow triangle symbol, the latter is a black-painted triangle symbol, and so on. It can be in the form.

Further, when the external dimensions of the first direction display and the second direction display are different, if the resin hose is cut by relying on these, the length may vary depending on the operator. In other words, if the external dimensions of the first direction display and the second direction display are equal, even if the operator cuts the resin hose at the tip of the arrow symbol (immediately before the iron part), the end of the arrow symbol is conversely. Even when the resin hose is cut (immediately after the arrow blade portion), there is an advantage that there is no difference in length regardless of whether the first direction display or the second direction display is relied on. As is clear from the above discussion, it is preferable that the first direction display and the second direction display have the same dimensions in the length direction of the resin hose.

(3) In order to solve the problems described above, in the present invention,
The dimension in the length direction of the resin hose of the direction indication is the insertion depth required when connecting the resin hose to the joint, according to (1) or (2). It is a resin hose.

Plug fittings are often used to connect resin hoses to devices and equipment. Here, the plug-in joint refers to a joint that is also commonly called a one-touch joint, and it is possible to prevent the hose from coming off and maintain airtightness simply by inserting the hose. Such a plug-in joint is, for example, the one disclosed in FIG. 1 of Japanese Patent Application Laid-Open No. 2000-136895, and is widely used because of its simplicity.

Although such a plug-in joint is very convenient, it is not easy to determine whether or not the insertion depth is sufficient when the resin hose is inserted into the plug-in joint. Further, even if the connection between the resin hose and the plug-in joint is loosened due to the pressure of the fluid transported by the resin hose, the vibration of the device or equipment, or the like, it is not easy to find it.

Therefore, the dimension of the resin hose in the direction indication in the length direction is defined as the insertion depth required for connecting to the insertion joint. In this way, when the operator cuts the resin hose at the end of the direction display and inserts it into the insertion joint, the direction display is completely hidden by the insertion joint, so that the resin hose reaches the required depth. It can be easily confirmed visually that it has been inserted. In addition, even if the connection between the plug-in joint and the resin hose is loosened during use of the device or equipment, that is, if it is gradually pulled out, the direction display of the resin hose inserted from the plug-in joint can be seen. Therefore, it is easy for the operator to visually detect the occurrence of looseness.
As a result, it is possible to improve the efficiency of the confirmation work of the connection between the plug-in joint and the resin hose and prevent the resin hose from falling out.

(4) In order to solve the problems described above, in the present invention,
The lengthwise dimension of the resin hose in the direction indication is characterized by a length that is just concealed by a hose nut used when connecting the resin hose to the joint, (1) or (2). ) Is used as the resin hose.

Joints with hose nuts are sometimes used to connect resin hoses to devices and equipment that use particularly high pressure or generate strong vibrations. Here, the joint with a hose nut is a joint provided with a nipple (also called a bamboo stick) inserted into the resin hose and a hose nut for tightening the resin hose from above the resin hose into which the nipple is inserted. Compared to the method of tying and fixing with a hose band from the top of the resin hose with the nipple inserted, the resin hose can be firmly tightened with the hose nut and fixed securely, and the fixing is completed by tightening the hose nut. It is also excellent in that the connection state of the resin hose does not vary depending on the operator. Examples of such a joint with a hose nut include those disclosed in FIG. 2 of Japanese Patent Application Laid-Open No. 55-60787 and are widely used.

Such joints with hose nuts are highly reliable and, if properly connected, will hardly loosen or come off. However, when the nipple (also called bamboo shoot) is inserted into the resin hose, if the resin hose cannot be inserted to a sufficient depth, the desired performance cannot be exhibited and an accident such as fluid leakage may occur. However, if the hose nut is tightened, it becomes impossible to visually judge whether or not the nipple is sufficiently inserted into the resin hose because the hose nut hides it.

Therefore, the dimension of the resin hose in the direction indication in the length direction is set to a length that is just hidden when the hose nut is fastened. In this way, if you cut the resin hose at the end of the direction indication, insert the nipple of the joint with the hose nut into it and tighten the hose nut, if the nipple is inserted correctly and to a sufficient depth, , The hose nut completely obscures the direction indication and makes it invisible, which visually confirms that the correct connection has been made. On the other hand, if the insertion depth of the nipple is insufficient, a part of the direction display will be visible from the end of the hose nut, and it is confirmed that the connection is improper.
This makes it possible to improve the efficiency of the work of checking the connection state between the joint with the hose nut and the resin hose, and to prevent accidents such as fluid leakage from the connection portion between the resin hose and the joint.

(5) In order to solve the problems described above, in the present invention,
The resin hose according to (1) or (2), characterized in that an insertion guideline display is provided behind the direction display in the length direction of the resin hose.

As explained in (3) and (4), the dimension of the resin hose in the direction indication in the length direction is set to the insertion depth of the insertion joint and the length hidden by the hose nut of the joint with the hose nut. The correct connection of the resin hose can be easily confirmed visually. However, the insertion depth of the plug-in joint and the length hidden by the hose nut of the hose nut-equipped joint are often quite long, and if such a direction indication of the length is provided, the indication of the resin hose surface may be excessive. is there. An overly large directional indicator does not cause immediate problems functionally, but it causes a deterioration in the design of the resin hose, and if the directional indicator is provided by printing, extra ink is required, which is economical. It is also a problem.

Therefore, in the present invention, the direction display is set to the size necessary for the function of indicating the direction of the fluid to be transported by the resin hose, and is separately hidden by the insertion depth of the insertion joint and the hose nut of the joint with the hose nut. An insertion guideline display indicating the length is provided. As already explained, the direction display in this draft is a clue for cutting the resin hose to the desired length, and the end of the cut resin hose is considered to coincide with the tip of the direction display. The display is displayed at the rear of the length direction of the resin hose of the direction display, and the position corresponding to the insertion depth of the insertion joint and the length hidden by the hose nut of the joint with the hose nut from the tip of the direction display is the end position.
This will improve the efficiency of the work of checking the connection status of the resin hose with the plug-in joint or the joint with the hose nut, and prevent the resin hose from falling out, while not impairing the design and saving ink. Can be done.

The insertion guideline display provided on the surface of the resin hose can be a square symbol as in the example shown as the insertion guideline display (4) in FIG. This is because the square symbol generally does not give a sense of direction, so there is no concern that the operator may confuse the insertion guideline display with the direction display of the fluid transported by the resin hose.

(6) In order to solve the problems described above, in the present invention,
In the direction display, a cutting guideline position that can be used as a guide when cutting the resin hose is displayed, and the insertion guideline position is located at a position separated by a certain interval in the length direction of the resin hose from the cutting guideline display. The resin hose according to (1) or (2), which is characterized by being displayed.

As already explained, the resin hose can be easily cut to the desired length by using the direction indications provided at regular intervals as clues, but this is because the direction indications are made of resin without using a ruler or a tape measure. It is used as a guideline for cutting the hose. In addition to the direction display, if an insertion guideline display is provided to indicate the insertion depth when connecting the resin hose to the insertion joint or the joint with the hose nut, after the resin hose has been connected to these joints, As already explained, it is possible to easily confirm the difficult connection state visually.

However, when connecting the resin hose to the device or equipment, it is necessary to connect the resin hose both upstream and downstream. For this reason, for example, when the resin hose is cut at the downstream end of the direction display, an end portion where the direction display is not provided is generated on the separated resin hose, and the connection state when this part is connected to the joint Confirmation becomes difficult.

Therefore, the cutting guideline position that should be used as a guideline when cutting the resin hose is displayed in the direction display, and the insertion guideline position is displayed at a position separated by a certain interval before and after the length direction of the resin hose. In this way, the insertion reference position remains at any end of the resin hose cut at the cutting reference position, and the connection when this part is connected to the joint regardless of the upstream side or downstream side of the resin hose. The status can be easily confirmed.

Specifically, for example, in the first direction display (2) appearing in FIG. 8 (A), the direction display includes three consecutive arrow symbols, and usually the tip of the center (second) arrow symbol is used. The resin hose can be cut here with the above as a reference cutting position. In this way, the second or third arrow symbol remaining on the downstream side of the cut resin hose can be used as a reference position for insertion to check the connection state with the joint on the downstream side. Similarly, the first arrow symbol remaining on the upstream side of the cut resin hose can be used as a reference position for insertion to check the connection state with the joint on the upstream side. It should be noted that the description given here with reference to FIG. 8 is merely a specific example given to facilitate understanding of the present invention. Therefore, it should be noted that the present invention is not limited to the example shown in FIG. 8, and its usage does not have to be as described above.

(7) In order to solve the problems described above, in the present invention,
The direction display is the resin hose according to any one of (1) to (6), characterized in that the surface of the resin hose is printed by an inkjet method.

In this proposal, the method of providing the direction display and the insertion guideline display on the surface of the resin hose is essentially arbitrary, but one of the preferable methods is to print these by the inkjet method. The cutting length may vary depending on the device or equipment that uses the resin hose, and the insertion depth of the plug-in joint and the hose nut of the joint with the hose nut depend on the type of joint used with the resin hose. The length hidden by can also vary.

According to the inkjet method, it is possible to print any figure, etc. on the surface of the resin hose with any size without using a printing mold, so the optimum direction display and insertion guideline display can be displayed according to various types. It can be installed freely, and workability such as connection and replacement of resin hoses can be further improved. In addition, the inkjet method has a remarkable advantage that it is easy to handle the production of high-mix low-volume products, but on the other hand, there are standard products that are mass-produced. It does not preclude the display.

(8) In order to solve the problems described above, in the present invention,
The resin hose according to (7), which comprises a protective film for coating the direction indication.

When a direction indicator is provided on the surface of the resin hose, especially when this is due to printing technology, this portion may be damaged when rubbed against another portion and become indistinguishable. This concern is especially great when resin hoses are used for sliding parts in devices and equipment.

Therefore, in the present invention, by providing a protective film that coats the direction indication on the surface of the resin hose, it is possible to prevent the indication from being easily damaged and becoming indistinguishable. Any standard method can be used as the coating method for indicating the direction, but it is preferable to form the coating layer by an inkjet method. This is because the production equipment can be standardized and simplified by performing both the direction display and the coating by the inkjet method. Further, when the resin hose is a multi-layer hose, it is also preferable to provide a direction indicator on the surface of the inner layer resin hose and use the outer layer resin hose as a protective film. However, in this case, the outer layer resin hose must be made of a transparent or colored transparent material in order to make the direction indication provided on the surface of the inner layer resin hose visible from the outside.

(1) Since the outer peripheral surface of the resin hose is provided with a direction indicator indicating the transport direction of the fluid transported at regular intervals in the length direction thereof, the direction of the fluid transported by the resin hose can be easily grasped visually. This has the effect of making it possible to efficiently perform maintenance work such as connecting and replacing resin hoses, such as being able to immediately grasp the valve on the upstream side to be closed.
Further, since the direction is displayed at regular intervals, the resin hose can be cut to a desired length without relying on a ruler or a tape measurer by using the direction display as a clue. This also has the effect of making it possible to efficiently perform maintenance work such as connecting and replacing the resin hose.

(2) The direction display on the surface of the resin hose may be at least two types, the first direction display and the second direction display, and the second direction display may be provided after a certain number of first direction displays are provided. Since the configuration is repeated, when cutting the resin hose for a long time, the rough length is read by the second direction display, and the length is read more finely by the first direction display to accurately obtain the desired length. It has the effect of being able to cut quickly. It can also be expected to be effective in preventing accidents in which the resin hose is cut with the wrong length.

(3) Since the dimension in the length direction of the resin hose indicated in the direction is the insertion depth required when connecting the resin hose to the joint, is the resin hose properly inserted into the insertion joint? It has the effect of making it possible to visually grasp whether or not it is. As a result, it is possible to improve the efficiency of the work of confirming whether the connection between the resin hose and the plug-in joint is appropriate and whether or not looseness has occurred, and to prevent an accident in which the resin hose is pulled out.

(4) Since the dimension in the length direction of the resin hose indicated in the direction is the length that is just hidden by the hose nut used when connecting the resin hose to the joint, the nipple of the joint with the hose nut (Takenoko) It has the effect of making it possible to visually grasp whether or not the hose nut has been properly inserted even after tightening the hose nut. This makes it possible to improve the efficiency of the work of checking whether the connection between the resin hose and the joint with the hose nut is appropriate and whether or not the hose is loose, and to prevent the resin hose from falling out. ..

(5) Since the insertion guideline display is provided behind the direction display in the length direction of the resin hose, the design of the resin hose is not impaired and ink is saved while the insertion joint and hose nut are attached. This has the effect of improving the efficiency of the work of checking the connection status between the joint and the resin hose and preventing the resin hose from falling out.

(6) Since the cutting guide position and the insertion guide position are displayed at a certain distance from the direction display, this part is connected to the joint regardless of the upstream side or downstream side of the resin hose. This has the effect of making it easy to check the connection status of the case.

(7) Since the direction display is applied to the surface of the resin hose by the inkjet method, the optimum direction display and insertion guideline display can be freely provided according to various types, and the resin hose can be connected or replaced. It has the effect of further improving the workability of the hose.

(8) Since it is provided with a protective film that coats the direction display, the direction display part is likely to be rubbed against other parts as in the case where the resin hose is used for the sliding part in the device or equipment. It also has the effect of not being damaged and becoming indistinguishable.

It is explanatory drawing which showed one Example of the resin hose which concerns on this invention. It is explanatory drawing which showed another Example of the resin hose which concerns on this invention. It is explanatory drawing which showed another Example of the resin hose which concerns on this invention. It is explanatory drawing which showed another Example of the resin hose which concerns on this invention. It is explanatory drawing which showed another Example of the resin hose which concerns on this invention. It is a partial cross-sectional view which showed the state which connected the resin hose which concerns on this invention to a plug-in joint. It is a partial cross-sectional view which showed the state which connected the resin hose which concerns on this invention to the joint with a hose nut. It is explanatory drawing which showed another Example of the resin hose which concerns on this invention.

Hereinafter, examples of the resin hose according to the present invention will be described with reference to the drawings.

1A and 1B are explanatory views showing an embodiment of a resin hose according to the present invention, in which FIG. 1A is a front view, FIG. 1B is a left side view, and FIG. 1C is a right side view. D) is a top view, (E) is a rear view, and (F) is a bottom view. Further, FIG. 6 is a partial cross-sectional view of a state in which the resin hose according to the present invention is inserted into the insertion joint.

The resin hose (1) is a flexible hose molded into a hollow circular tube shape, depending on the type and pressure of the fluid transported by the resin hose, such as polyurethane, polyethylene, vinyl chloride resin, and fluororesin. It can be composed of various materials. Further, in order to achieve both solvent resistance and pressure resistance, a laminated structure made of different types of materials may be formed, or in order to realize further pressure resistance, resin or metal reinforcing threads may be embedded between layers. The present invention is a device applicable to all resin hoses including the above, but in the figure, a single-layer resin hose made of a soft polyvinyl chloride resin is indicated as intended.

On the surface of the resin hose (1), a first direction display (2) and a second direction display (3) are provided by printing. In this embodiment, the first direction display is provided with four same displays at 10 cm intervals in the length direction of the resin hose (1), and the second direction display (3) is also provided at 10 cm intervals. , Similarly, the first direction display and the second direction display are repeated. Therefore, the distance between the second direction indications is 50 cm. By the way, as is clear from the figure, in this embodiment, the first direction display (2) prints the outline of the arrow figure, and the second direction display prints the same arrow figure by filling the inside thereof. ..

Further, in this embodiment, the first direction display (2) and the second direction display (2) have the same shape except for the presence or absence of filling, and the dimensions of the resin hose (1) in the length direction correspond to each other. Matches the insertion depth of the insertion joint. This will be explained later.

By the way, the resin hose is usually stored in a state of being wound on a reel. An operator who connects a resin hose to an apparatus or device pulls out a resin hose of a desired length according to the connection location from a reel and cuts the resin hose. Here, as an example, the resin hose (1) has a length of 70 cm. Suppose you have to disconnect.
In the resin hose according to the present invention, the distance between the second direction indications is 50 cm, so that the distance from the left end of FIG. 1A to the first second direction indication is 50 cm. Next, since the distance between the first direction displays is 10 cm, the distance between the first direction displays is 70 cm, starting from the first second direction display and the second first direction display. If the resin hose (1) is cut at the tip of the first direction indication, a resin hose having a desired length of 70 cm can be obtained. As described above, since the resin hose can be cut to a predetermined length without using a ruler or a tape measure, the burden on the operator is greatly reduced especially when connecting a large amount of resin hoses.

Next, the worker connects the resin hose to the device or equipment, but in actual work, the resin hose is often connected to the joint provided by the device or equipment. At this time, the operator connects the resin hose so that the direction indication faces in the direction corresponding to the direction of the fluid transported by the resin hose. As a result, when replacing the resin hose at a later date, the direction of the fluid can be grasped at a glance, and the replacement work can be performed after the valve on the upstream side is definitely closed, preventing accidents. ..

By the way, here, as shown in FIG. 6, a case where the resin hose (1) is inserted into the insertion joint (5) is taken as an example. The insertion joint (5) is provided with a structure for fixing the resin hose to the insertion port (6) to prevent the resin hose from coming off and a structure for keeping the fluid airtight. These have been conventionally known. Since it is a structure that is used, detailed description will be omitted. The point here is that if the resin hose (1) is not sufficiently inserted into the resin hose insertion port (6) of the insertion joint (5), the functions such as keeping the fluid airtight and fixing it will not work properly. The point is that it may lead to fluid leakage or a resin hose dropout accident.

Whether or not the resin hose (1) is sufficiently inserted into the resin hose insertion port (6) was not easy to confirm with a conventional resin hose, but in the present invention, the first direction display (2) If the resin hose (1) is cut at the tip of the resin hose, the first direction display (2) is hidden inside the resin hose insertion port (6) and cannot be seen in a sufficiently inserted state, which is sufficient. It is possible to confirm that the insertion state has been achieved. If the insertion is insufficient, the end portion of the first direction display (2) can be seen from the resin hose insertion port (6), which indicates that the insertion is insufficient. By the way, when the resin hose is cut at the tip of the second direction display, it goes without saying that the portion of the above description in which the first direction display is used must be read as the second direction display.

FIG. 2 is an explanatory view showing another embodiment of the resin hose according to the present invention. In the figure, (A) shows a front view, (B) shows a left side view, and the like, as in the case of the first embodiment. Further, FIG. 7 is a partial cross-sectional view of a state in which the resin hose according to the present invention is connected to a joint with a hose nut.

Of the symbols displayed in FIG. 2, those appearing in the first embodiment have a common meaning, and thus the description thereof will be omitted. The feature of this embodiment is that the insertion guideline display (4) is provided behind the resin hose (1) in the first direction display (2) in the length direction. In the figure, a code is given only to the insertion guideline display (4) behind the first direction display (2), but the insertion guideline display is also displayed behind the second direction display (3). Is displayed as is clear from the figure.

Since the insertion guideline display (4) in this embodiment exerts an action effect when connected to the joint with hose nut, FIG. 7 shows a state in which the resin hose (1) is connected to the joint with hose nut (7). Will be explained using.

A nipple (9) provided with a joint with a hose nut (7) is inserted into the resin hose cut at the tip of the first direction display (1). The nipple is often called a bamboo shoot. Next, the hose nut (8) is attached to the joint with the hose nut (7). Since the hose nut (8) is attached by a screw mechanism, the resin hose (1) is fixed by a strong tightening force. Further, since the installation is completed by closing the screw mechanism, there is no concern that the tightening state will vary depending on the operator.

However, if the nipple (9) is not sufficiently inserted into the resin hose (1), the airtightness is not sufficiently maintained, and there is a concern that fluid leakage may occur. However, when the hose nut (8) is attached, the inserted state of the nipple (9) in the resin hose (1) is hidden and invisible, so it is easy to check this with a conventional resin hose. It wasn't. However, in the present invention, if the resin hose (1) is cut at the tip of the first direction display (2), the insertion guideline display (6) is displayed inside the resin hose insertion port (6) in a sufficiently inserted state. 4) is hidden and invisible, which makes it possible to confirm that a sufficient insertion state has been achieved. If the insertion is insufficient, the end portion of the insertion guideline display (4) can be seen from the resin hose insertion port (6), which indicates that the insertion is insufficient. By the way, when the resin hose is cut at the tip of the second direction display, it goes without saying that the portion of the above description in which the first direction display is used must be read as the second direction display.

FIG. 8 is an explanatory view showing another embodiment of the resin hose according to the present invention. In the figure, (A) shows a front view, (B) shows a left side view, and the like, as in the case of the first embodiment. Further, the reference numerals in the drawings are the same as in the case of the second embodiment.

The feature of this embodiment is that three arrow symbols are displayed on the first direction display (2) and the second direction display (3). As a whole, these directional displays can perform the same functions as the first directional display (2) and the second directional display (3) in the case of the first embodiment.

Further, for example, the resin hose can be cut at the tip of the central (second) arrow symbol among the three arrow symbols included in each direction display. In this way, arrow indications remain at both ends of the resin hose (1) connected to a desired length. These arrow indications are sized to be hidden by the insertion depth of the insertion joint and the hose nut of the joint with the hose nut, and when this resin hose is connected to the joint, the connection state is displayed on both the upstream side and the downstream side. It can be easily confirmed.

FIG. 3 is an explanatory view showing another embodiment of the resin hose according to the present invention. In the figure, (A) shows a front view, (B) shows a left side view, and the like, as in the case of the first embodiment. Further, the reference numerals in the drawings are the same as in the case of the second embodiment.

This embodiment is different in that the first direction display (2) and the second direction display (3) are triangular symbols instead of arrow symbols. This is a variation in design, and the action and effect are the same as in the case of the second embodiment, and thus the description thereof will be omitted.

FIG. 4 is an explanatory view showing another embodiment of the resin hose according to the present invention. In the figure, (A) shows a front view, (B) shows a left side view, and the like, as in the case of the first embodiment. Further, the reference numerals in the drawings are the same as in the case of the second embodiment.

In this embodiment, the first direction display (2) is displayed as a ">" symbol instead of an arrow symbol, and the second direction display (3) is displayed as a ">>" symbol instead of a black arrow symbol. different. As in the case of the third embodiment, the present embodiment is mainly a variation in design, and the action and effect are the same as those in the second embodiment, and thus the description thereof will be omitted. However, the positional relationship between the first direction display (2) and the second direction display (3) is determined with reference to the right end of the ">" symbol and the ">>" symbol, respectively. When the operator cuts the resin hose (1) using the first direction display (2) and the second direction display (3) as clues, the resin hose (1) is cut at the tips of these displays. This is because if the distance is not kept constant, an error will occur in the length of the cut resin hose.

FIG. 5 is an explanatory view showing another embodiment of the resin hose according to the present invention. In the figure, (A) shows a front view, (B) shows a left side view, and the like, as in the case of the first embodiment. Further, the reference numerals in the drawings are the same as in the case of the second embodiment.

This embodiment is different in that the first direction display (2) is an arrow symbol and the second direction display (3) is a wide arrow symbol. This is mainly a variation in design, and the action and effect are the same as in the case of the second embodiment, and thus the description thereof will be omitted.

As shown in Examples 3 to 5, various figures and symbols can be used for the first direction display and the second direction display in the present invention. Further, although not specifically shown in the examples, a protective coating may be provided on the first direction display or the second direction display, or a display with color may be provided.

As explained above, in the present invention, the direction of the fluid to be transported by the resin hose can be easily grasped, the fluid can be cut to a desired length without using a ruler or a tape measure, and the connection with a joint or the like is appropriate. It provides a resin hose that makes it possible to easily confirm that no looseness has occurred, and its industrial utility value is extremely high.

1 Resin hose 2 1st direction display 3 2nd direction display 4 Insertion guideline display 5 Plug-in joint 6 Resin hose outlet 7 Joint with hose nut 8 Hose nut 9 Nipple

Claims (8)

A resin hose mainly used for transporting fluids.
The resin hose is characterized in that the outer peripheral surface of the resin hose is provided with direction indications indicating the transport direction of the fluid transported by the resin hose at regular intervals in the length direction of the resin hose. The direction display consists of at least two types, a first direction display and a second direction display.
The resin hose according to claim 1, wherein a certain number of first direction indications are provided and then a second direction indication is repeatedly provided. The first or second aspect of the present invention, wherein the dimension of the resin hose in the direction indication in the length direction is a insertion depth required for connecting the resin hose to a joint. Resin hose. 1 or claim, wherein the lengthwise dimension of the resin hose in the direction indication is a length that is just concealed by a hose nut used to connect the resin hose to the joint. The resin hose according to 2. The resin hose according to claim 1 or 2, wherein an insertion guideline display is provided behind the direction display in the length direction of the resin hose. In the direction display, a cutting guideline position that can be used as a guideline for cutting the resin hose is displayed, and the insertion guideline position is located at a position separated from the cutting guideline display by a certain interval in the length direction of the resin hose. The resin hose according to claim 1 or 2, wherein the resin hose is displayed. The resin hose according to any one of claims 1 to 6, wherein the direction indication is printed on the surface of the resin hose by an inkjet method. The resin hose according to claim 7, further comprising a protective film for coating the direction indication.

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