JP3094021B1 - Connection fitting for liquid unloading - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To provide a connection fitting having a structure in which a connection fitting does not need to be frequently replaced and a common joint can be easily formed even if a shape of a liquid inlet fitting is different. Kind Code: A1 A liquid unloading connection fitting (1) to be joined to a liquid filling fitting (10) having a different shape, and a hook that can be locked to the concave and convex portions (13, 14) of the liquid filling fitting (10) having a different shape. A liquid unloading fitting provided with the mechanism 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection fitting which can be commonly jointed to liquid injection fittings having different shapes.

[0002]

2. Description of the Related Art Conventionally, joint fittings at the time of unloading of oil or the like are described in, for example, Japanese Utility Model Application Publication No.
No., published in Japanese Unexamined Patent Publication No. The injection port coupling structure described in this publication has a female coupling inner diameter of the injection port which is tapered so as to expand in the direction of the opening, and which is to be engaged with a locking projection of the female coupling on the outer periphery of the coupling. A locking lever having a portion is provided. With this configuration, at the time of liquid injection, the distal end of the male coupling body at the distal end of the liquid supply hose connected to the liquid transport vehicle is inserted into the tapered inner surface of the female coupling connected to the liquid injection port. The locking portion is opened outward by the locking projection by sliding on the sliding surface of the locking projection of the female coupling, and the locking portion and the locking projection are locked over the locking projection. Things.

[0003]

However, in the liquid inlet coupling structure described in the above-mentioned publication, the female coupling and the male coupling have a relationship between the locking portion of the locking lever and the locking projection of the female coupling. Therefore, they need to be of a type compatible with each other. As described above, the conventional injection port fitting and the liquid transport vehicle side connection fitting can be jointed only with fittings of a model compatible with each other. In the unloading place where is installed, every time unloading is performed, it is necessary to replace the connection fitting with the shape of the injection port fitting,
There was a problem that replacement took time and the workability was poor.

In order to be able to unload the vehicle regardless of the shape of the liquid inlet fitting, a plurality of types of connecting fittings must be prepared in the liquid transport vehicle. , Was a considerable expense. Furthermore, since the connection fitting is frequently replaced each time, there is a possibility that a liquid leak may occur due to a defective seal at the time of replacement.

Accordingly, the present invention provides a connection fitting having a structure in which the connection fitting does not need to be frequently replaced even if the shape of the liquid inlet fitting is different, and can be jointed easily and commonly. .

[0006]

SUMMARY OF THE INVENTION A liquid unloading fitting according to the present invention is a liquid unloading fitting which is jointed to a liquid filling fitting having a different shape . comprising a lockable takes mechanism concave protrusion, takes
An arm whose mechanism is pivotally mounted around the end of the fitting,
The lock stay is pivotally attached to the
The stay has an upper U-shaped member pivotally attached to the arm and a liquid inlet.
The lower U-shaped member hooked on the uneven part of the bracket is an elastic member
Movably connected via
In the opening, a guide / prevention preventing member is provided. Further, the connection fitting for liquid unloading of the present invention,
For unloading liquid to be jointed with different shapes of inlet fittings
A connection fitting, wherein a recess of the injection port fitting having a different shape is provided.
Equipped with a hook mechanism that can be locked to the protrusion, and the hook mechanism is connected
An arm pivotally attached to the outer periphery of the end of the bracket is provided,
At the lower end of the arm there is a hook that hooks on the inlet fitting
At the upper end of the arm, the hook is attached to the lubrication fitting side.
A spring is provided between the connection fitting and the arm.
Is pressed by a spring into the opening of the connection fitting.
The cylindrical seal packing is fitted and the seal packing is
At the lower part of the liquid inlet fitting, a flange pressed against the end face of the liquid inlet fitting
Characterized in that it is equipped with a nozzle.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 shows an embodiment of a connection fitting according to the present invention. FIG. 1 (a) is a partial sectional view, and the right half shows a state before the connection fitting is joined to a liquid inlet fitting. , And the left half shows a jointed state, and (b) is a front view.

The connection fitting 1 is provided with a hook mechanism 2. The hook mechanism 2 includes, for example, an arm 4 pivotally pivoted up and down with a pin 3 at a 180-degree symmetrical position on the outer periphery of an end of the connection fitting, and a lock stay 5 pivotally pivotally attached to the arm 4. Can be composed of

The lock stay 5 comprises an upper U-shaped member 6 and a lower U-shaped member 7 which are movably connected up and down.
A curved portion 8a of the upper U-shaped member 6 and the lower U-shaped member 7,
8b are connected so as to be located on the opposite side on a straight line.

In order to urge the upper U-shaped member 6 and the lower U-shaped member 7 away from each other, an elastic member 9 made of an elastic material such as a spring or rubber is provided.

The curved portion 8b of the upper U-shaped member 7 is pivotally attached to the arm 4, and the curved portion 8a of the lower U-shaped member 7 becomes a hook portion 8a that hooks on the uneven portion of the liquid inlet fitting 10.

At the lower end of the connecting fitting 1, an annular groove 11 for guiding the upper end of the liquid inlet fitting 10 is formed, and a guide and retaining preventing member 12 for preventing the fitting is provided. It is possible to prevent the liquid outlet fitting 10 from falling off.

Next, the joint operation between the connection fitting 1 and the liquid inlet fitting 10 will be described.

As shown in the right half of FIG. 1 (a), after inserting the injection port fitting 10 into the connection fitting 1, the lower U-shaped member 7 is formed.
Is hooked on the projection 13 of the liquid inlet fitting 10. Next, when the arm 4 is rotated and raised in the direction of the arrow A, the upper U-shaped member 6 and the lower U-shaped member 7 move in the direction away from each other and are centered on the hook portions 8a while being filled. It turns to the side 10 and becomes the state shown in the left half of FIG. In this state, since the upper U-shaped member 6 and the lower U-shaped member 7 are urged in the direction away from each other by the elastic member 9, the lower U-shaped member 7 is locked by the locking projection 13, The connection fitting 1 and the liquid inlet fitting 10 are firmly joined.

Embodiment 2 FIGS. 2A and 2B show another embodiment of the connection fitting of the present invention. FIG. 2A is a partial cross-sectional view, and the right half shows a state before the connection fitting is connected to the liquid inlet fitting, and FIG. One half shows a jointed state, (b) is a front view, and the same members as those in FIG. 1 are denoted by the same reference numerals and description thereof will be omitted. In the embodiment shown in FIG. 1, since the hook 8a of the lower U-shaped member 7 is curved, it is necessary that the liquid inlet fitting 10 is formed with a projection 13 that enters the hook 8a. In the present embodiment, a hook 15 is provided at the lower end of the lower U-shaped member 7 so that the lower U-shaped member 7 can be hooked on the step portion 14 other than the projection 8a.

The hook claw 15 allows the step portion 14 of the annular rib formed on the liquid inlet fitting 10 to be hooked.

Embodiment 3 FIG. 3 shows still another embodiment of the connection fitting of the present invention.
(A) is a partial sectional view, and (b) is a front view.

A cylindrical seal packing 16 is fitted into the opening of the connection fitting 1, and is pressed against an annular step 18 of the connection fitting 1 by a helical spring 17 arranged on the inner periphery of the seal packing 16. Is being held. A flange 16a is formed below the liquid inlet of the cylindrical seal packing 16 so as to be able to press against the end face of the liquid inlet having different dimensions (FIG. 4).

The connection fitting 1 is provided with a hook mechanism 2 for hanging the liquid inlet fitting 10. The hook mechanism 2 includes an arm 4 pivotally attached to the pin 3 at a 180-degree symmetrical position on the outer periphery of the end of the connection fitting 1, and a hook claw 15 is provided at a lower end of the arm 4. At the upper end, a spring 19 for urging the hook 15 of the arm 4 toward the lubrication fitting 10 is provided.
Is provided between the connection fitting 1 and the arm 4. The hook claw 15 of the arm 4 allows the lower portion of the step portion 14 (FIG. 4) of the annular rib formed on the liquid inlet fitting 10 to be hooked.

The connection fitting 1 is provided with a lock receiving fitting 20, and a detachment preventing lock 21 that is locked to the lock receiving fitting 20 is rotatably mounted on the arm 4.

Next, the joint operation between the connection fitting 1 and the liquid inlet fitting 10 will be described. FIG. 4 is a partial cross-sectional view showing a state where the connection fittings shown in FIG. 3 are joined.

When the connection fitting 1 and the liquid inlet fitting 10 are jointed, the liquid inlet fitting 10 becomes a cylindrical seal packing 16.
At the same time, the lower end of the seal packing 16 is pressed against the end face of the liquid inlet fitting 10 by the spring 17, so that the connection fitting 1 and the liquid inlet fitting 10 are securely sealed.

At the same time, when the connecting fitting 1 and the liquid inlet fitting 10 are jointed, the hook 15 at the lower end of the arm 4 is required.
Is urged toward the lubrication fitting 10 by the spring 19, and slides over the step portion 14 to get over the step portion 14.
Is locked at the lower part.

Thereafter, by locking the detachment prevention lock 21 to the lock receiving fitting 22, it is possible to reliably prevent the connection fitting 1 from coming off from the liquid inlet fitting 10.

It should be noted that also in the first and second embodiments,
Similarly to the present embodiment, the connection fitting is provided with a lock receiving fitting, the arm is provided with a locking lock, and after connecting the connecting fitting and the liquid inlet fitting, the locking lock is locked to the lock receiving fitting. Thereby, it is possible to reliably prevent the connection fitting from coming off from the liquid inlet fitting.

[0026]

The effects of the present invention are as follows.

(1) Since a single connection fitting can be jointly connected to liquid injection fittings having different shapes, there is no need to replace the connection fittings with different shapes. Performance can be greatly improved. Also, there is no need to prepare connection fittings having different shapes, and the cost burden can be greatly reduced. As a result, there is no need to replace the connection fitting, so that there is no seal failure at the time of replacement, and the safety is greatly improved.

(2) The connection fitting of the present invention is economical because the current fitting can be used as it is.

(3) Since a telescopic member such as a spring is incorporated in the hooking mechanism of the connection fitting, it can be securely locked even if the distance between the concave and convex portions on the liquid inlet fitting side is different, thereby ensuring safety.

(4) By providing a guide for the joint in the connection fitting, a reliable joining operation can be performed. Also, if the connecting fitting is provided with a guide and retaining member, even if one of the catching mechanisms comes off during unloading, the guide will be caught and serve as a stopper.
It is safe because liquid leakage is minimized.

(5) By providing a detachment preventing mechanism in the hooking mechanism, there is no detachment of the joint, and the safety is greatly improved.

[Brief description of the drawings]

1A and 1B show an embodiment of a connection fitting of the present invention, in which FIG. 1A is a partial cross-sectional view, in which a right half shows a state before the connection fitting is joined to a liquid inlet fitting, and a left half shows a state where the connection fitting is joined. (B) is a front view.

2A and 2B show another embodiment of the connection fitting of the present invention, wherein FIG. 2A is a partial cross-sectional view, in which the right half shows a state before the connection fitting is joined to the injection port fitting, and the left half shows a state where the connection fitting is joined. (B) is a front view.

FIG. 3 shows still another embodiment of the connection fitting of the present invention;
(A) is a partial sectional view, and (b) is a front view.

FIG. 4 is a partial cross-sectional view showing a state where the connection fittings shown in FIG. 3 are joined.

[Explanation of symbols]

1: Connection fitting 2: Hanging mechanism 3: Pin 4:
Arm 5: Lock stay 6: Upper U-shaped member 7: Lower U-shaped member 8a: Curved portion (hook portion) 8b: Curved portion 9:
Telescopic member 10: Liquid inlet fitting 11: Annular groove 12: Guide
13: Projection 14: Step 15: Hook 16: Seal Packing 16a: Flange 17: Spring 18: Annular Step 19: Spring 20: Lock Fitting 21:
Detachment lock 22: Lock bracket

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-10-47600 (JP, A) JP-A-11-13967 (JP, A) JP-A-6-34074 (JP, A) 42886 (JP, U) JP 52-42928 (JP, B1) JP 62-39314 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) F16L 37/00-37 / 58

Claims (2)

(57) [Claims] 1. A liquid unloading for fitting to the joint in different liquid inlet fitting shapes, comprising a lockable takes mechanism concave convex portions different liquid inlet fitting of the shape, hanging
An arm whose pivot mechanism is pivotally mounted on the outer periphery of
It consists of a lock stay pivotally attached to the arm,
The lock stay is connected to the upper U-shaped member
The lower U-shaped member hooked on the concave and convex part of the liquid mouth fitting expands and contracts
It is movably connected via a member, and further below the connection fitting.
A connection fitting for unloading a liquid , comprising a guide / prevention prevention member in an opening at an end . 2. A joint for a liquid inlet having different shapes.
A liquid unloading connection fitting having a different shape.
Equipped with a hook mechanism that can be locked to the uneven part of the liquid inlet fitting.
The weighing mechanism is pivotally connected to the outer periphery of the end of the connection fitting.
Equipped with an arm, hooked at the lower end of the arm with a liquid inlet fitting
Hook is provided at the upper end of the arm.
A spring that urges the oil fitting side connects the connecting fitting and the arm.
A spring is installed in the opening of the connection fitting.
And the cylindrical seal packing is fitted.
Push the end of the injection port fitting at the bottom of the
A connection fitting for unloading liquid, comprising a flange to be pressed .