JPH0612871Y2 - Oil coating device for the inner surface of the hose - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention applies oil to the inner surface of the tip of hoses used for piping of equipment to facilitate connection of hoses during piping work. Regarding the device.

[Conventional technology]

For example, in the engine assembly process of automobile manufacturing lines, various hoses need to be inserted by connecting them to pipes, etc. Normally, the diameter of the pipe is made slightly thicker than the inner diameter of the hose to prevent fluid leakage. ing. Therefore, in this connection work, it is difficult to insert the hose into the pipe, and if the connection is incomplete, there is a problem that cooling water or the like leaks from the connection portion. Also, this work
Arm strength was required, and fingertip pain occurred during long-term work.

Therefore, at present, in order to facilitate the insertion into the pipe, as shown in FIGS. 4 and 5, the work of applying oil to the inner surface of the hose using a brush or a sponge is performed. FIG. 4 shows a method of applying oil by brush painting. Here, the oil 2 impregnated in the brush 1 is applied to the inner surface 3 a of the tip of the hose 3. In this case, it is desirable to apply the oil 2 so that the oil 2 does not adhere to the outer periphery of the tip of the hose 3 as much as possible as shown in the figure.

FIG. 5 shows a method of applying oil with a sponge. In the figure, reference numeral 5 indicates a case for housing the sponge 6, and the sponge 6 is impregnated with oil 2.
In this case, the tip of the hose 3 is pressed against the sponge 6,
The oil 2 impregnated in the sponge 6 is attached to the inner surface of the tip of the hose 3.

[Problems to be solved by the invention]

However, as described above, there is a problem in the oil application work using a brush and a sponge. In other words, the application work with a brush often causes hair loss of the brush to enter the hose and the pipe and cause leakage. In addition, this method requires a lot of time because it is hand-painted.

Oil application work with a sponge is quicker than oil application with a brush, but in this case, oil adheres to both the inside and the outside of the hose tip, making it difficult to judge whether it is good or bad at the time of leak check. May cause defective products. In other words, there is a risk of overlooking even if water is leaking in the part where the oil is attached. Therefore, if the oil adhering to the outer surface of the hose is to be blown off, this work will take a lot of time.

SUMMARY OF THE INVENTION An object of the present invention is to provide an oil applicator for an inner surface of a hose that can apply oil only to the tip of the hose quickly and reliably.

[Means for solving problems]

According to the present invention, an apparatus for applying oil to an inner surface of a hose is provided with an oil suction part having an oil passage formed on one side of the oil suction port, and an oil suction part disposed in the oil passage of the oil suction part. First check valve that allows only oil to enter, a tubular portion that is provided on the outer periphery of the oil suction portion and moves with respect to the oil suction portion by pressing a hose, the tubular portion and the oil suction portion And an oil sump portion for storing oil that has entered through the first check valve, and a biasing portion that biases the tubular portion against the oil suction portion in a direction opposite to the pressing direction of the hose. Means, a second check valve provided in the tubular portion for allowing only oil to enter from the oil reservoir, and formed in an end portion of the tubular portion, which can be inserted inside the hose and is tubular. Department transfer A protruding portion protruding in the moving direction; a hose abutting portion provided adjacent to the protruding portion, for restricting an amount of the protruding portion entering the hose when abutting on an end surface of the hose; and a side surface of the protruding portion. And an oil ejection port for ejecting the oil discharged through the second check valve toward the inner surface of the tip of the hose when the hose is pressed against the hose contact portion.

[Action]

In the device for applying oil to the inner surface of the hose configured as described above, when the inside of the tip of the hose is fitted into the protruding portion of the tubular portion and the hose is pressed toward the oil suction portion, the pressure in the oil sump portion rises. , The second check valve opens. As a result, the oil in the oil reservoir is discharged through the second check valve, and the discharged oil is jetted from the oil jet outlet of the projecting portion toward the inner surface of the tip of the hose. In this case, the hose contact part and the end surface of the hose come into contact with each other, and the amount of protrusion that enters the hose is restricted, so that oil adheres only to the inner surface of the tip of the hose and prevents oil from adhering to unnecessary parts. To be done.

Then, when the hose is separated from the hose contact portion, the tubular portion moves in the direction opposite to the pressing of the hose by the biasing means. In this case, since the volume of the oil sump increases as the tubular part moves, the pressure of the oil sump becomes negative. Therefore, the first check valve is opened, and the oil flows from the oil suction port side of the oil passage into the oil sump portion via the first check valve, and the oil sump portion is filled with oil.

By repeating the above, the oil is applied to the inner surface of the hose. In other words, the oil application work is a simple work of inserting the end of the hose into the protruding part of the tubular part and pressing the hose against the hose abutting part, which significantly reduces the work time compared to the conventional application work. It becomes possible.

〔Example〕

Hereinafter, a preferred embodiment of the device for applying oil to the inner surface of the hose according to the present invention will be described with reference to the drawings.

1 to 3 show an embodiment of the present invention. In the drawing, 11 indicates an oil tank. Oil 11
Is a square bottomed container, and this oil tank
Oil 12 is stored in 11. Oil tank 11
Inside, an oil application device 13 having a lower part immersed in oil 12 is arranged.

The oil applying device 13 is composed of the following parts. First, the oil suction portion 14 placed on the bottom surface of the oil tank 11 is located below. Oil suction part 14
The lower part is formed in a disk part 14a that bulges outward in the radial direction, and a cylindrical part 14b extending upward is formed in the center part. On the bottom surface of the disk portion 14a, an oil groove 1 that serves as a passage for the oil 12
4c is formed. Further, an oil passage 15 is formed in the center of the oil suction portion 14 so as to penetrate the upper surface and the lower surface. The lower end of the oil passage 15 is an oil intake port 15a, and the oil intake port 15a communicates with the oil groove 14c.

In the oil passage 15, a first check valve 16 that allows only oil to enter from the oil intake port 15a side is provided. The first check valve 16 is located in the cylindrical portion 14b and has a valve seat 1
It is composed of a ball 7, a ball 18 and a spring 19. The ball 18 is pressed by the urging force of the spring 19 against the valve seat 17 that is screwed into the cylindrical portion 14b. In addition, a groove 14d is formed on the outer peripheral surface of the cylindrical portion 14b.
Ring 20 is attached.

A cylindrical portion 21 is located on the outer periphery of the cylindrical portion 14b of the oil suction portion 14. The cylindrical portion 21 includes a cylindrical large-diameter portion 21a slidably fitted in the cylindrical portion 14b, and a cross-shaped medium diameter located above the large-diameter portion 21a and having a smaller diameter than the large-diameter portion 21a. Part 21b and medium diameter part
It is located directly above 21b and comprises a protrusion 21c having a diameter slightly smaller than the inner diameter of the hose 35 described later. A hose 35 made of rubber or the like can be inserted into the hose contact portion 21c. The large-diameter portion 21a includes the large-diameter portion 21a.
Oil sump portion 2 formed by the inner wall of the cylinder and the cylindrical portion 14b
2 is formed. In the vicinity of the inner peripheral wall of the oil sump portion 22, a spring 23 is provided as an urging means for urging the tubular portion 21 against the oil suction portion 14 in the direction opposite to the pressing direction of the hose.

On the side surface of the protruding portion 21c of the tubular portion 21, a plurality of oil ejection ports 2
4 are formed. This oil ejection port 24 has a protrusion 21c.
When the hose 35 is inserted into the
It is designed to face 35a. The oil outlet 24 is
It is possible to communicate with the oil sump 22 via the second check valve 25. The second check valve 25 has an oil reservoir 22
The oil is made to flow only to the ejection port 24 and is composed of a valve seat 26, a ball 27, and a spring 28. The valve seat 26 is screwed onto the medium diameter portion 12b, and the ball 2
7 is pressed against the valve seat 26 by the urging force of the spring 28.

The protruding portion 21c of the tubular portion 21 projects in the moving direction of the tubular portion 21, and the tip end thereof has a spherical shape. The upper end portion of the middle diameter portion 21b is formed as a hose contact portion 21d that restricts the amount of protrusion 21c entering the hose 35. The plurality of oil ejection ports 24 formed in the projecting portion 21c are located slightly above the end surface of the hose abutting portion 21d, so that an appropriate amount of oil is applied only near the tip inner surface 35a of the hose 35. It has become. The hose contact portion 21d is formed in a cross shape, and the contact area between the cut end surface 35b of the hose 35 and the hose contact portion 21d is extremely small.

The cylindrical portion 14b of the oil suction portion 14 and the large diameter portion 2 of the tubular portion 21
Liquid tightness with the inner wall surface of 1a is maintained by an O-ring 20 mounted on the cylindrical portion 14b.

An outer cover 29 that prevents excessive upward movement of the tubular portion 21 is provided on the outer periphery of the tubular portion 21, and the outer cover 29 is formed in a substantially tubular shape. A stopper portion 29a that can come into contact with the upper end surface of the large diameter portion 21a of the tubular portion 21 is formed on the upper portion of the outer cover 29, and a flange portion 29b that bulges radially outward is formed on the lower portion. . The flange portion 29b of the outer cover 29 is fixed to the oil suction portion 14 with a bolt 30.

Next, the operation of the oil application device will be described.

When the tip of the hose 35 is not pressed against the hose contact portion 21d of the tubular portion 21 of the oil applying device 13, as shown in FIG. 1, the large-diameter portion of the tubular portion 21 is urged by the spring 23. The upper end surface of 21a is in contact with the stopper 29a of the outer cover 29. In this state, the oil 12
Is satisfied.

Next, when the end of the hose 35 is inserted into the protruding portion 21c of the tubular portion 21 and the hose 35 is pressed downward, the urging force of the spring 23 loses the pressing force, and as shown in FIG. Is pushed downwards. As a result, the pressure of the oil sump portion 22 increases, and the ball 27 of the second check valve 25 separates from the valve seat 26 by this pressure, and the second check valve 25 is opened. Therefore, the oil 12 in the oil reservoir 22 passes through the second check valve 25 and is jetted from the oil jet outlet 24 toward the inner surface 35a of the tip of the hose 35. When the hose 35 is pressed, the hose abutment portion 21d restricts the amount of the protrusion 21c entering the hose 35, so that the oil 12 adheres only to the inner surface 31a of the tip of the hose 35.

In this case, the cut end surface 35b of the hose 35 is connected to the hose contact portion 21d.
However, since the hose contact portion 21d has a thin cross shape, even if the oil 12 adheres to the hose contact portion 21d, the hose contact portion 21d 21d
The amount of oil adhered to the cut end surface 35b of the hose 35 due to contact with is substantially negligible. Therefore, the adhesion of oil to the outer surface of the hose 35 is almost completely prevented, and the leak check after connecting the hose 35 becomes easy.

When oil has been applied to the inner surface of hose 35, the hose
35 is separated from the tubular portion 21. At the same time, the tubular portion 21 is returned to the state shown in FIG. 1 by the urging force of the spring 23.
In this case, since the tubular portion 21 moves in the direction in which the volume of the oil sump portion 22 is increased, the inside of the oil sump portion 22 becomes a negative pressure, and the oil 12 in the oil tank 11 becomes the oil groove 14c and the oil suction. Oil sump 2 via port 15a and first check valve 16
Inflow into 2. After the movement of the tubular portion 21 is completed, the volume change of the oil sump portion 22 disappears and the pressure difference disappears, so that the first check valve is closed. Also, the tubular portion 21
Since the O-ring 20 is interposed between the oil suction part 14 and the oil suction part 14, the oil 12 stored in the oil sump part 22 is also prevented from leaking downward.

As described above, the oil application work in the oil application device 13 is a work of simply pressing the cut end surface 35b of the hose 35 against the hose contact portion 21d of the tubular portion 21, which is easier than the conventional application work. Remarkably speeded up.

[Effect of device]

According to the device for applying oil to the inner surface of the hose of the present invention, the oil can be quickly and surely applied to the inner surface of the end of the hose by simply inserting the hose into the protruding portion of the cylindrical portion of the end of the hose and simply pressing the hose against the contact portion of the hose. Can be applied. Therefore, anyone can easily perform the coating work without requiring skill and the work load can be reduced. As a result, the application time of oil to the hose can be significantly shortened as compared with the conventional application method, and the man-hours for connecting the hose can be significantly reduced.

When the hose is pressed, the amount of entry of the protrusion into the hose is regulated by the hose contact portion, so that it is possible to apply oil only to the inner surface of the tip of the hose. Therefore, excessive application of oil is prevented, and it is possible to prevent excess oil from adhering to the outer peripheral surface of the hose. Therefore, the leak check after connecting the hose becomes easy.

Furthermore, since the amount of oil applied can be set by, for example, the volume of the oil reservoir and the stroke of the tubular portion, it is possible to apply an appropriate amount of oil to the inner surface of the hose, reducing the amount of oil used. Be peeled off. In addition, this also prevents oil spills to the surrounding area during application,
The working environment can be improved.

[Brief description of drawings]

1 is a sectional view of an oil applying device for an inner surface of a hose according to an embodiment of the present invention, FIG. 2 is a sectional view showing a state in which the hose is pressed against a cylindrical portion in the device of FIG. 1, FIG. 1 is a perspective view of the apparatus of FIG. 1, FIG. 4 is a perspective view showing an example of a conventional method for applying oil to a hose, and FIG. 5 is another example of a conventional method of applying oil to a hose. FIG. 13 …… Oil coating device 14 …… Oil suction part 16 …… First check valve 21 …… Cylindrical part 21c …… Projection part 21d …… Hose contact part 22 …… Oil sump part 23 …… Biasing means 24 …… Oil spout 25 …… Second check valve 35 …… Hose

Claims (1)

[Scope of utility model registration request] 1. A first check in which an oil suction portion having an oil passage formed on one side of the oil suction opening, and an oil suction portion which is disposed in the oil passage of the oil suction portion and allows only oil to enter from the oil suction opening side. A valve, a tubular portion that is provided on the outer periphery of the oil suction portion and moves with respect to the oil suction portion by pressing a hose, and the first check valve that is formed by the tubular portion and the oil suction portion. An oil reservoir portion for storing the oil that has entered through, an urging means for urging the tubular portion against the oil suction portion in a direction opposite to the pressing direction of the hose, and the oil provided in the tubular portion. A second check valve that allows only oil to enter from the sump; a protrusion that is formed at the end of the tubular portion and that can be inserted inside the hose and that protrudes in the moving direction of the tubular portion; Adjacent to the protrusion And a hose contact portion that restricts the amount of protrusion of the protrusion into the hose at the time of contact with the end surface of the hose, and a side surface of the protrusion portion that opens when the hose is pressed against the hose contact portion. An oil spraying device for spraying oil discharged through a second check valve toward the inner surface of the end of the hose, and an oil applying device for the inner surface of the hose.