JPS6034860Y2 - Hose connection fitting - Google Patents

Description

[Detailed explanation of the invention] This invention is a joint for connecting hoses, and other hoses that require emergency use and must never be separated during use, such as fire hoses, can be easily operated. , relates to pipe fittings that connect reliably.

Various proposals have been made for the above-mentioned hose connection joints, but most of them are male-female screw type fittings, and if they are oriented in the wrong direction, they cannot be used immediately in an emergency. Can not.

Therefore, extreme care must be taken when wrapping items such as fire hoses.

Moreover, the more reliable the connection, the more complicated the structure and weight of conventional joints, and the more complicated they are to handle.

On the other hand, devices that are simple in structure, lightweight, and easy to operate usually have unreliable connections.

However, if the work itself requires urgency, such as connecting fire hoses at a fire scene, and the fire scene is far from a fire hydrant or water tank, or if a fire engine cannot approach, many hoses may need to be connected. Therefore, hose connection fittings must be able to connect instantly and firmly with simple operation.

In addition, fire sites are often chaotic due to firefighting and evacuation efforts, and hoses are often stepped on or handled roughly, so they must be able to be connected reliably and quickly even under harsh conditions.

Furthermore, the hose must not be kinked when it is connected, so great care must be taken when connecting it.

If the hose is twisted, it will cause the hose to dance, which will eventually impede water flow.

Therefore, it is also desirable that the hose has some flexibility in twisting.

The purpose of this invention is to provide a hose connection joint that can instantly and reliably connect and disconnect hoses with a very simple operation.

Another object of this invention is to provide a hose connection joint that can easily remove the twist and reliably maintain the connection no matter how twisted the hose is.

This invention will be explained in detail below with reference to embodiments shown in the drawings.

Figures 1 and 2 are front views showing two different ways of connection. Looking at the point-symmetrical connection clearly seen in these drawings, the pipe joint of this invention has the following features in terms of appearance: In the drawings, there is no distinction between the left and right connecting rings A and B, and since they are characterized by having the same structure, only one connecting ring A will be described below.

Regarding this connecting ring A, in the connected state, the side that meets the other party (the right side in Figure 3) is called the 1st meeting end side, and the opposite side is called the 1st end side.

The connecting ring A connects its main body 1 to the end face side 2 that meets at the time of connection.
The meeting end face 2 of the hollow ring body 1 has a point-symmetrical structure as shown in FIG. The retaining claws 3a and 3b are
It is formed in a point-symmetrical position.

At positions adjacent to these L-shaped claws 3a, 3b, there are cut-out parts 4a, 4b into which the L-shaped claws 3a, 3b of the connecting ring B are fitted, and connections fitted into the cut-out parts 4a, 4b. Relatively long locking walls 5a, 5b for locking the L-shaped claws 3a, 3b of the ring B in the hollow portion 6 are also formed point-symmetrically.

At a suitable position on the outer circumference of the connecting ring main body 1, that is, at a position close to one L-shaped pawl 3a, a fourth groove 7 reaching the hollow part 6 is provided.
As shown in FIG. 6, the groove 7 is formed in the circumferential direction, and an arc-shaped locking lever 9 is pivotally mounted in this groove 7 so as to vibrate in a centrifugal direction using a pin 8 as a fulcrum. , one end 9a of the locking lever 9 is located at the outer periphery of the connecting ring main body 1, and the L-shaped pawl 3
The corresponding end of the locking lever 9 is exposed from the arcuate recess 10 formed near the formation position of a (see FIGS. 5 and 6), and the compression spring 11 built into the corresponding part of the main body 1 is used to hold the corresponding end of the locking lever 9. Press in the centrifugal direction to make the other end of the lever protrude from the tapered inner surface 9b into the hollow portion 6 of the connecting ring main body 1. In addition, increase the amount by which the other end inner surface 9b of the locking lever 9 protrudes into the hollow portion 6. In order to ensure the engagement with the L-shaped pawl 3b on the side of the connecting ring B, the other end of the lever is formed into a right triangle. When no external force is applied to the exposed end 9a, the repulsive force of the compression spring 11 keeps the locking lever 9 in the position shown by the solid line in FIG.
It forms substantially the same surface as the outer peripheral surface of.

12 is the following connecting tool C formed on the tail end side of the connecting ring main body 1.
This is the fitting hole D.

Next, connectors C and D connect the hose to the connection ring main body 1.
I will explain about it.

Connections C and D shown in Figure 1 (Figure 2, Figure 3, Figure 4)
This is a so-called bamboo hand-shaped hose nipple.

These connecting tools C and D both have the same shape and structure, and have a flange 14 that engages from the meeting end side with the peripheral edge 13 of the fitting hole 12 formed on the tail end side of the connecting ring main body 1, and It has a circumferential groove 15 for fitting a stop ring 16 to prevent the tools C and D from falling off, a hose connection part 17, a shaft hole 18, and a backing 19.

The fit between the fitting holes 12 of the connecting rings A, B and the connecting tools C, D is a loose fit, so the connecting rings A,
B and the connectors C and D are mutually rotatable.

Then, if the stop ring 16 is removed artificially,
The fittings C, D can be freely removed from the connecting rings A, B at any time, so that the fittings C, D are replaceable.

When assembling, fit the fitting holes 1 formed in the connecting rings A and B.
Insert the connecting parts 17 of the connecting tools C and D from the meeting end side of the connectors C and D,
Fit the stop ring 16 and connect the connecting rings A, B and the connecting tool C.
, D are rotatably connected to each other, and then the hose is fitted into the hose connection portion 17.

Next, we will explain how to use the hose connection joint of the present invention.

To connect connecting rings A and B of the same structure in the state shown in Figure 1, connect the locking claws 3a and 3b of connecting rings A and B to connecting ring B.
The meeting ends of both connecting rings A and B are made to face each other by matching the locking claws 3b and 3a with the adjacent cutout portions 4bw4a.

Both connecting rings A and B have the same structure and are formed point-symmetrically, so both connecting rings A and B fit perfectly into each other.

In this state, when both the connecting rings A and B are turned in opposite directions so that the L-shaped claws 3ay3b of the connecting rings A and B advance through the hollow parts 6 on the back surfaces of the locking claws 5b and 5a, The L-shaped claw 3
a and 3b move inside the hollow part 6 while rubbing the back surfaces of the locking walls 5a and 5b, and the L-shaped pawl 3b is the end of the locking lever 9 that protrudes into the hollow part 6 by the action of the compression spring 11. It moves along the inner surface of the lever while pushing up the tapered inner surface 9b toward the outer peripheral surface.

Eventually, when passing through the tapered inner surface 9b, the L-shaped claw 3
b is released from the locking lever 9, and the lever 9 returns to its original state.

Therefore, since the above-mentioned L-shaped claw 3b is prevented from returning to its original position by the locking lever 9, the other L-shaped claws 3
at3b is also prevented from returning, and both connecting rings A and B are locked in the axial direction so that they cannot be separated.

In addition, in order to connect both the connecting rings A and B in the state shown in FIG. 4b, and then turn both connecting rings A and B in the same way, and they will be locked in the same way as the former.

Next, in order to release the connecting rings A and B from the locked state, both should be turned in the opposite direction, but in the locked state, the L-shaped pawl 3a
, 3b hit the end face of the locking lever 9, and the connecting rings A and B cannot be enclosed any further, so the connecting ring A
, B, first press the locking levers 9, 9 of the connecting rings A, B with your fingers against the elastic force of the compression spring 11. When it escapes from the hollow part 6, the rectangular claw 3a is removed.

3b is not stopped by the locking lever 9, so when both connecting rings A and B are turned in the opposite direction from when they were connected, the L-shaped claws 3a and 3b reach the positions of the cutouts 4a and 4b. The lock will be released at this point.

At this time, if both connecting rings A and B are pulled apart in the axial direction, they are separated.

When you release your finger, the locking levers 9, 9 will release the compression springs 11.1.
It returns to its original state as shown by the elastic force of 1.

The present invention has been described above based on the embodiments, but the hose connection joint of this invention has a pair of connecting rings A and B, which have the same structure regardless of whether they are male or female, and which are concentric with the connecting rings. an appropriate connector C for connecting a hose, which is rotatably coupled to the hose and is provided with a backing 19 for sealing the end face on the meeting end face;
D, the connecting ring defines the main body 1 with a hollow ring that opens on the same end face side where the end faces meet each other during connection, and there is a point on the end face side of the main body of the connecting ring when viewed from the same side. L to be engaged in the hollow part 6 of the other connecting ring main body at a symmetrical position
The shaped claws 3a, 3b, the cutout portions 4a, 4b for fitting the shaped claws on the side of the other connecting ring main body, and the L-shaped claws 3a, 3b on the other connecting ring main body side fitted in the cutout portions. Relatively long locking walls 5a and 5b are formed for locking in the hollow part 6, and the other side locking in the hollow part 6 is provided at the outer peripheral position of the connecting ring main body 1. A locking lever 9 is provided to prevent the L-shaped claws 3a, 3b of the connecting ring from escaping, and the locking tip 9b of the lever is urged by a spring 11 so as to protrude into the hollow portion 6. According to this invention, a reliable locking connection state can be obtained by simply rotating both connecting rings relative to each other, and it is extremely effective as a hose joint required for emergency work such as firefighting.

Moreover, even if the L-shaped claws 3a and 3b are engaged in different ways,
Since the connections can be made in the shape shown in FIGS. 1 and 2, connections can be made without worrying about the positions of the L-shaped claws 3a and 3b, and connections can be made easily in the dark.

Moreover, once the locked state is achieved, the connected hose will not be accidentally separated even if it is handled roughly, so it is safe during use.

In addition, in the separated state, both connecting rings A and B rotate freely, so even if the hose to be connected is slightly twisted, the twist in the hose can be easily removed by holding the connecting ring main body 1 and turning only the pipe body. be able to.

In addition, since the backings 19 for end face sealing are provided on the connectors C and D, the connectors C and D do not turn even if the connecting rings A and B are rotated, so the end faces of the connectors that seal the connection ends are not rotated. The backing 19 provided on the backing 19 does not twist.
Therefore, even if the hose is repeatedly connected and disconnected, the backing 19 will not be damaged, and therefore no liquid leakage will occur.

Furthermore, in order to separate connecting rings A and B, you can easily release the mutual restraint between connecting rings A and B by pushing the locking lever 9 with your finger. It can be easily separated by turning it in the direction.

Moreover, the hose connection joint of this invention has connection rings A and B.
Since there is no distinction between male and female, and the pair of connecting rings A and B have the same structure, the structure is simple, easy to manufacture, and production costs can be reduced.

Moreover, since it is lightweight, it also has the effect of being easy to handle.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention; FIG. 1 is a front view showing one connection example, FIG. 2 is a front view showing another connection example,
Fig. 3 is a vertical sectional bottom view of the connection example shown in Fig. 2, Fig. 4 is a front view showing one connecting ring of the hose connection joint of this invention, and Fig. 5 is a view of the connecting ring from the meeting end side. 6 is a partially cutaway side view of the connecting ring from the tail end side with the connecting tool removed; FIG. 7 is a sectional view taken in the direction of arrows ■-■ in FIG. FIG. 8 is a front view of the connecting ring seen from below in FIG. 6. A, B...Connection ring, C, D...Connector, 1...Connection ring main body, 2...Meeting end surface, 3a, 3b... ...L-shaped retaining claws, 4a, 4b.
...Removed portion, 5a, 5b... Locking wall, 6
...Hollow part, 9...Latching lever, 9b
...End tapered inner surface, 10...Indentation, 11...Compression spring, 19...
Backing, 2, 3... Relay member.

Claims (1)

[Scope of utility model registration request] A pair of connecting rings having the same structure regardless of gender, and an appropriate connecting tool for connecting a hose, which is rotatably coupled concentrically to the connecting ring and has a backing for sealing the end face on the meeting end face. The main body of the connecting ring is a hollow ring that opens on the same end face side where the end faces meet each other during connection, and the end face side of the main body of the connecting ring has a point-symmetrical position when viewed from the same side. an L-shaped pawl to be engaged in the hollow portion of the other connecting ring main body, a cut-out portion for fitting the side-shaped pawl of the other connecting ring main body, and a cut-out portion of the other connecting ring main body that is fitted into the cut-out portion. side L
A locking wall with a relatively long arc is formed to lock the shaped pawl in the hollow part, and a locking wall of the other connecting ring main body, which is locked in the hollow part, is formed at an appropriate position on the outer periphery of the connecting ring main body. A hose connection joint that is provided with a locking lever that prevents the L-shaped pawl from escaping, and the locking tip of the lever is biased by a spring so as to protrude into the hollow part.