JPH04102794A - Valve integrated hose - Google Patents

Abstract

PURPOSE:To obtain a valve integrated hose which can improve reliability of a pipeline system by enlarging diameter of each end of a pair of hoses, bonding them with each other, and arranging a valve in spaces formed enlarged diameter parts. CONSTITUTION:Inner diameter of an end of a hose 1 is enlarged, and the end of this enlarged diameter part 2 is bended to the inside to form a bending part 7. A valve 3 including an adhered partitioning wall 4 is housed in a border part of spaces A, B, which are formed by adhering the enlarged diameter parts 2 of each hose 1. This valve 3 consists of the described partitioning wall 4, a valve member 6, which consists of a valve part 6a and a piston part 6b and a base part 6c, and a spring 5. In the valve unified hose, since the bending parts 7 of the enlarged diameter parts 2 of the hoses 1 are bonded with the partitioning wall 4 strongly by vulcanization adhering, a danger that a bonding part is loosened is eliminated to improve the reliability of a pipeline system.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a valve-integrated hose that is used, for example, as a hose connected to a pipe through which exhaust gas discharged from an automobile engine passes. .

[Conventional technology]

Conventionally, as shown in FIG. 6, in order to connect a check valve 11 that allows fluid to flow in a fixed direction and a rubber hose 12, an end of the rubber hose 12 is connected by a predetermined amount to a cylindrical portion 11a protruding from both ends of the check valve 11. This was done by inserting.

[Problem to be solved by the invention]

However, in the above conventional technology, there are seams at two places on both ends of the check valve 11, and the rubber hose 12
Since the check valve 11 is simply inserted manually into the cylindrical portions 11a at both ends of the check valve 11, there is a problem in that the joint strength is insufficient and the connected piping system lacks reliability.

An object of the present invention is to provide a valve-integrated hose that can solve the above problems and improve the reliability of the piping system.

[Means to solve the problem]

In order to achieve the above object, in the present invention, each end of a pair of hoses is enlarged in diameter, the enlarged diameter parts of these hoses are joined to each other, and a valve is disposed in the space formed by the enlarged diameter parts. We have adopted a configuration in which

[Effect]

By adopting the above configuration, a space is formed by joining the enlarged diameter portion of one hose end of a pair of hoses to the enlarged diameter portion of the other hose end using an adhesive, for example, By accommodating the valve in this space, a valve-integrated hose is obtained.

〔Example〕

Next, an embodiment embodying the present invention will be described based on FIGS. 1 to 4.

As shown in FIG. 1, the valve-integrated hose of the present embodiment is composed of a pair of hoses 1 and a valve 3 whose ends have an enlarged diameter. A pair of hoses 1 are glued together at the enlarged diameter portion 2, forming a check valve as a whole.

The hose 1 has an inner tube made of acrylonitrile butadiene rubber (NBR) and an outer cover made of chlorosulfonated polyethylene (NBR).
C8M), and its end has an inner diameter 1.5 to 3 times larger than that of a normal hose. The end portion of this enlarged diameter portion 2 is a bent portion 7 formed by being bent inward.

Further, although the two bonded hoses 1 may be asymmetrical, it is preferable that they be symmetrical in terms of appearance.

A valve 3 including a partition wall 4 bonded thereto is accommodated at the boundary between the spaces A and B formed by bonding the enlarged diameter portions 2 of each of the hoses 1.

The valve 3 includes the partition wall 4, a valve body 6 including a valve portion 6a, a piston portion 6b, and a base portion 6C, and a spring 5. The partition wall 4 is made of metal or plastic and is formed into a disk shape, and has a circular hole 8 in the center thereof, and a piston portion 6b of the valve 3 is movably inserted into the circular hole 8. Fluid F can flow therethrough. Note that the material of the partition wall 4 is selected to be appropriate in consideration of adhesion to the hose 1.

Furthermore, the upstream part (first
In one space A corresponding to the right side of the figure, there is a disk-shaped base portion 6C1 of the valve body 6, which has a larger diameter than the circular hole 8 integrally formed with the piston portion 6b.
b and a spring 5 are housed therein, and this spring 5 is arranged on the outer periphery of the piston part 6b between the base part 6c and the partition wall 4, and urges the base part 6C away from the partition wall 4, thereby closing the valve. The flow of the fluid F can be stopped by bringing the portion 6a into close contact with the partition wall 4.

On the other hand, the other space B corresponding to the downstream part of the fluid F accommodates a piston part 6b and a valve part 6a of the valve body 6, and this valve part 6a has a semicircular cross section and a piston part 6b.
It is integrally molded on the end of the

Next, the functions and effects of the valve-integrated hose of this embodiment configured as described above will be explained.

As shown in FIG. 3, the ends of the enlarged diameter portions 2 of both hoses 1 are bent inward at right angles, and the outer skin of this bent surface is C8M.
The bent portion 7 is formed by cutting off the portion to expose the NBR. At the same time as the NBR is vulcanized and molded, the bent portion 7 is brought into contact with the peripheral edge of the partition wall 4 having the valve body 6, as shown in FIG. 4, and vulcanized and bonded. In this way, a valve-integrated hose is obtained.

As described above, in the valve-integrated hose of this embodiment, the bent part 7 of the enlarged diameter part 2 of the hose 1 is attached to the partition wall by vulcanization adhesion.
Since the piping system is firmly connected to the piping system, there is no risk of the joint becoming loose when it is installed, for example, in the engine compartment of an automobile, resulting in excellent reliability of the piping system. Also,
As mentioned above, since adhesion can be applied at the same time as vulcanization molding, a valve-integrated hose can be obtained quickly, and there are no mistakes in integrating the hose 1 and the valve 3, resulting in excellent assembly workability. ing. Furthermore, as shown in FIG. 2, the external appearance after adhesion is neat and has a good appearance because there are no connection parts with the rubber hose at both ends of the check valve as in the conventional case, and the valve is integrated. In addition, in the valve-integrated hose of this embodiment, since the outer peripheral portion of the conventional check valve can be replaced with the enlarged diameter portion 2 of the hose 1, weight reduction can also be achieved.

Normally, the valve-integrated hose bonded as described above is shown in FIG. As shown, the base portion 6c is pushed to the right in FIG. 4 by the biasing force of the spring 5, and the valve portion 6a is brought into close contact with the partition wall 4, preventing the fluid F from entering the space B from the space A. prevent.

On the other hand, if the pressure in the space A is greater than the sum of the pressure in the space B and the biasing force of the spring 5,
The fluid F pushes the base portion 6c against the biasing force of the spring 5, and the valve body 6 moves to the left as shown in FIG. 1, creating a gap between the valve portion 6a and the partition wall 4. The fluid flows from space A to space B, and when the pressure in space A becomes smaller than the sum of the pressure in space B and the biasing force of spring 5, the fluid returns to its original state due to the biasing force of spring 5. Return to state (Figure 4).

At this time, even if the pressure applied to the spaces A and B is somewhat large, the partition wall 4 and both hoses 1 are bonded to each other by the adhesive means.
Since the end portions of the enlarged diameter portion 2 and the end portions of the hose 1 are firmly adhered to each other, there is no fear that the hose 1 will peel off from the partition wall 4.

The present invention is not limited to the above-described embodiments, and can be configured as follows, for example, without departing from the spirit of the invention.

(1) In the above embodiment, the hose l is either an inner pipe or NBR.
Although a comb hose with an outer skin made of C8M was used, the material of the hose is not particularly limited as long as it is suitable for various uses, and for example, a hose made of plastic such as nylon may be used.

(2) Although vulcanized adhesive means was used as the adhesive means in the above embodiments, any adhesive means may be used as long as the adhesive strength is sufficient to withstand internal pressure, such as adhesive adhesive or heat fusion adhesive. may be adopted.

(3) As shown in FIG. 5, the end of the hose 1 is bent in the same way as in the previous embodiment to form a bent part 7, and the thickness of the partition wall 4 is increased to form an annular shape on the outer periphery. A groove 9 is formed. Then, the bent portions 7 of both hoses 1 may be fitted into the annular groove 9 of the partition wall 4 with the bent portions 7 in close contact with each other, and vulcanization bonding may be performed. In this case, the appearance becomes cleaner and better.

〔Effect of the invention〕

The valve-integrated hose of the present invention has the effect of improving the reliability of the piping system when it is installed in the engine room of an automobile.

[Brief explanation of drawings]

1 to 4 are views showing embodiments of the present invention, in which FIG. 1 is a cross-sectional view showing the valve-integrated hose with the valve open, FIG. 2 is a front view showing the valve-integrated hose, Fig. 3 is a sectional view showing a state in which the enlarged diameter portions of the hose ends are joined to each other, Fig. 4 is a sectional view showing the valve-integrated hose with the valve closed, and Fig. 5 is a sectional view showing the open side of the present invention. FIG. 6 shows a conventional example, and is a front view of a state in which rubber hoses are attached to both ends of a check valve. 1... Hose, 2... Expanded diameter part, 3... Valve, A
, B...Space part

Claims (1)

[Claims] 1. Expand the diameter of each end of a pair of hoses (1), join the expanded diameter portions (2) of these hoses (1) to each other, and connect the space (A) formed by the expanded diameter portions (2). , B) is provided with a valve (3).