JP2511620Y2 - Pipe fitting - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to two opposed pipes to be connected, a split housing having a gasket inside, one end of which is rotatably connected, and the other end of which is a toggle arm. The lever attached to the other end of the arm and the lever are pivoted to firmly join and maintain the split housing, and a double safety mechanism for joining is provided to connect the tubes. The present invention relates to a pipe-type tightened pipe joint.

[0002]

2. Description of the Related Art A conventional split pipe joint is provided with a lip portion extending over both pipes to be connected and facing each other.
A victoric joint that is equipped with an annular gasket made of synthetic rubber, covers the housing in half from the outer circumference, connects both ends of the housing with bolts and nuts, and connects the pipes has long been well known. ing.

[0003]

Since the above-mentioned victoric joint is to join the split housings by tightening bolts and nuts at both ends respectively, it takes time and labor to connect the pipes. .
For this reason, in recent years, in order to shorten the connection work time as much as possible, one end of the split housing is rotatably connected with a pin, and only the other end is tightened with bolts and nuts to tighten the split housing. It has also been devised to connect both pipes to be connected via a gasket.

However, even in this case, the working time of the pipe connection cannot be significantly shortened, and in the case where the drain pipe for sewage, muddy water, etc. by the sand pump and the connection extension thereof are used, a work place is required. It is not good, and tightening work with bolts and nuts is not easy in narrow places,
Simplification of pipe connections, shortening of work time, and labor saving are still insufficient. The present invention has been made in view of the above circumstances, and an object thereof is to provide a pipe joint capable of connecting both pipes opposed to each other by one-touch operation by lever operation.

[0005]

In order to achieve the above object, the pipe joint of the present invention comprises a rubber-made annular member having a lip portion provided on the inner periphery thereof and extending over both pipes opposed to each other for joining. In a pipe joint in which the gasket is fitted and covered in the inner circumferential groove of the halved housing to connect the halved housing, one end of the halved housing is rotatably coupled. The other end of the split housing is provided with a support part for rotatably connecting one end of a toggle arm to one housing, and the other housing is provided with a locked part in which a convex part and a concave part are connected to the outer surface. A connecting part is provided.

At the other end of the toggle arm, a pivot pin is rotatably supported by a pivot pin, and at the tip end thereof, an engaging protrusion pivotally engaged in the concave portion with the convex portion as a fulcrum is provided. Attach a long lever that connects the two housings correctly by pressing and pulling the toggle arm.
Further, the toggle arm and the connecting portion are provided with respective pin holes which are matched when the housing is divided into two parts, and a lock pin which is inserted into the pin holes and fixes both the housings in the connected state.

The supporting portion and the connecting portion of the halved housing are formed of bifurcated flanges which are opposed to each other so that the toggle arm can be accommodated along the outer peripheral side of the housing.
One end of the toggle arm is pivotally mounted between the support portions. Further, the lever is provided with a grip portion at a rear portion thereof so as to hold a predetermined gap with the outer peripheral surface of the housing so that a hand is not caught between the lever and the outer peripheral surface of the housing.

The lock pin has an insertion pin portion which is inserted through a pin hole formed in the connecting portion and the toggle arm, and a free end which suppresses an engaging protrusion of a lever tip which engages with a concave portion of the connecting portion. The gate-shaped hooking rod portion opened to the outside is integrally formed with one steel wire through a winding spring portion at one end so as to retain elasticity.

[0009]

According to the present invention having the above-mentioned structure, an annular gasket made of synthetic rubber or the like having an inner periphery with lip portions extending over both pipes facing each other for connection can be opened and closed by a hinge pin at one end. When the lever is moved to the housing side, the toggle arm is supported and connected along the outer peripheral side of the housing by fitting and covering it in the annular groove of the housing. Move so that it fits between the forked flanges of the part.

Further, when the rear portion of the lever is pressed from above, the lever is rotated around the pivot pin as a fulcrum while the depression of the tip portion of the lever is supported by the convex portion of the locked portion of the coupling portion,
The tip of the engaging protrusion is locked in the concave portion while the maximum length from the pivot pin is held while pressing the concave portion of the engaged portion by the tip surface of the engaging protrusion of the lever tip portion. Because of this operation, the engaging protrusion at the tip of the lever restrains one of the two housings while the other housing is pulled by the toggle arm, so the two housings can be joined correctly and firmly, and the lip of the inner annular gasket can be connected. The parts are compressed to the outer surfaces of both pipes facing each other so as to be connected, and can be joined in a sealed state.

At the time of this coupling, the coupling portion on one side of the housing and the pin hole formed in the toggle arm are aligned,
By inserting the insertion pin portion of the lock pin into these pin holes, both members are fixedly connected and fixed. At the time of this insertion, if the free end of the gate-shaped hooking rod is inserted and fitted in the position of the recess of the connecting portion, the gate-shaped hooking rod is covered by the elasticity of the coil spring at one end. It is elastically engaged on the engaging protrusion of the lever tip locked in the recess of the locking portion, and in addition to the locking of the engaging protrusion of the lever tip and the locked portion, the insertion of the lock pin In addition to the restraint of the latching rod, the connection of the split housing is double-locked for safety, and since the connection mechanism does not greatly protrude from the outside of the split housing, there is no hindrance and appearance. Is also good.

[0012]

1 is a perspective view of a pipe joint according to the present invention, and FIG. 2 is an exploded perspective view thereof. The housing is divided into two, and the inner peripheral groove 2 is made of rubber or synthetic rubber having a lip 3a on the inner periphery that extends over both pipes facing each other and is in close contact with the outer peripheral surface of the pipe. The gasket 3 is fitted and covered, and the annular gasket 3 is loaded inside by tightening the housings 1 and 1 together.
To hermetically connect the tubes to each other, and one end of each of the split housings 1 and 1 is rotatably connected to each other by a hinge pin 4.

On the outer side of one housing 1 which is the other end of the two split housings 1, 1, there is provided a supporting portion 6 by bifurcated flanges 5 and 5 which are erected at a distance, and on the other end of the other housing 1, Similarly, a coupling portion 8 formed by forked flanges 7 and 7 standing upright on the outer side of the end surface of the housing 1 is provided in a protruding manner, and an arcuate convex portion is formed on the outer surface of the forked flanges 7 and 7 opposite to the housing facing surface. A locked portion 11 is provided in which 9 and the recess 10 are connected.

Between the supporting portions 6, one end of a toggle arm 12 having a predetermined arcuate shape so as to fit along the outer periphery of the housing is pivotally attached by a pivot pin 13, and the other end of the link is provided. Has a tip portion pivotally connected by a pivot pin 14, and an engagement protrusion pivotally engaged with the concave portion 10 through a recess 15 abutting the convex portion 9 of the coupling portion 8 in front of the pin position. The pivot pin 14 is provided with a child 16 by a lever action with the convex portion 9 as a fulcrum.
A long lever 17 for opening and closing the housing is provided for pulling the toggle arm 12 to the other housing 1 side through the to correctly connect the housings 1 and 1 to each other.

Further, the lever 17, upon binding of the housing 1, 1, outside the housing to extend the rear so as not to sandwich the hand between the outer peripheral surface of the housing
The gripping portion 18 is formed so as to have a sufficient space between the surface and the hand so as not to be caught . Further, the toggle arm 12 and the connecting portion 8 are provided with pin holes 19 and 20 which coincide with each other when the housing is divided into two parts.
A lock pin 21 to be mounted on the housing is provided to safely maintain the coupled state of the housing.

The lock pin 21 is elastically locked to the connecting portion and the linear insertion pin portion 22 inserted into the pin holes 19 and 20 of the toggle arm 12 and the recess 10 of the connecting portion 8. The V-shaped opening-shaped latching rod portion 23 having a free end portion is integrally formed by forming a coil spring portion 24 at one end of a steel wire so as to retain elasticity.

FIG. 3 is a vertical sectional side view showing a condition of use of the pipe joint of the present invention, and FIG. 4 is a partial sectional view thereof.
To connect, the ends of the pipes 25 and 26 are inserted from both sides of the gasket 3 into the insides of the lip portions 3a and 3a so that the pipes face each other, and the gaskets 3 are provided on one side of the split housings 1 and 1. The lever 17 side should be positioned on the upper side.

Then, when the lever 17 is pressed downward from the state of the phantom line in FIG. 3 in the direction of the arrow, the holding portion 18 at the rear portion of the lever 17 is pushed downward so that the depression 15 at the tip portion of the lever 17 is made into the connecting portion 8.
While being supported by the convex portion 9 of the locked portion 11 of the
The lever 17 is rotated about the fulcrum, and the tip of the engaging protrusion 16 having the maximum length from the pivot pin 14 causes the recess 10 of the engaged portion 11 to move.
By pressing and engaging with the recess 10, the support portion 6 and the connecting portion 8 at the open end of the split housings 1 and 1 are strongly attracted via the toggle arm 12 and the pivot pins 13 and 14. Pipes 25, 2 that are joined together and face each other to connect the lip portions 3a, 3a of the gasket 3 loaded inside.
The outer peripheral surface of 6 is compressed and firmly adhered, and the pipes 25 and 26 can be connected in the sealed state shown in FIG.

Further, from this state, when the grip portion 18 at the rear portion of the lever 17 is rotated in the direction of the phantom line in FIG. 3, the engagement protrusion 16 at the tip of the lever 17 and the recess 10 are engaged with each other under strong pressure. Is loosened and the pivot pin 14 of the toggle arm 12 is moved outward, so that the split housings 1 and 1 can be freely opened with the hinge pin 4 as a fulcrum.

[0020]

According to the present invention having the above-mentioned structure, the housing is divided into two parts by inserting a bolt into a joint portion on one side or the other side of a housing which is divided into two parts like a conventional Victorian pipe joint and tightening it with a nut. It is possible to firmly tighten both housings by simply pressing the lever up and pressing it from the top without the need for the troublesome work of connecting the two pipes, so that both pipes facing each other can be connected. You can instantly perform a simple work in a sealed state, work place is bad, even in narrow places,
The pipe connection can be simplified, the work time can be shortened, the labor can be reduced, the labor can be saved, and the work efficiency can be improved.

Further, since the toggle arm is housed along the outer peripheral surface of the housing and the lever is provided along the housing, the protrusion to the outside of the pipe can be extremely reduced, and there is no trouble such as getting in the way or getting caught. Moreover, Lever
-Because there is no danger of getting your hands caught in the housing due to the rear shape , it is excellent in handling and in a limited space .

The lock pin has a connecting portion and a toggler.
Insertion pin part that communicates with the pin holes drilled in each
Suppresses the engaging protrusion at the tip of the lever that engages with the recess of the joint.
Lock pin with a gate-shaped latching rod whose free end opens to the outside
By using this, the split housing can be reliably and easily maintained in the coupled state when connecting the pipes, and it can be double-locked together with the elastic locking of the latching rod, making this kind of pipe joint simple. It is possible to obtain a safety device having a different structure.

[Brief description of drawings]

FIG. 1 is a perspective view of a housing according to an embodiment of the present invention in a coupled state.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is a vertical cross-sectional side view in use showing a relationship between a lever and unevenness of a coupling portion.

FIG. 4 is a partial cross-sectional view during use.

[Explanation of symbols]

1 Housing 2 Inner Circumferential Groove 3a Lip Part 3 Annular Gasket 4 Hinge Pin 5 Bifurcated Flange 6 Support Part 7 Bifurcated Flange 8 Joint Part 9 Convex Part 10 Recessed 11 Locked Part 12 Toggle Arm 13, 14 Pivot Pin 15 Recessed 16 Engagement Protrusion 17 Long Lever 18 Grip 19, 19 Pin Hole 21 Lock Pin 22 Insertion Pin 23 Gate-shaped Latching Rod 24 Winding Spring 25, 26 Pipes Opposed to Connect

Claims (2)

(57) [Scope of utility model registration request] 1. A pipe joint in which an annular gasket extending over both pipes to be connected is covered with a split housing and fixedly connected , one end of these housings is rotatably connected to each other , and the other is connected to one housing. One end of the toggle arm is pivotally supported, and the other housing has a protrusion.
A coupling portion having a locked portion in which the concave portion is coupled to the side surface plate ,
Equipped with an engaging protrusion pivotally attached to the other end of the toggle arm that pivotally engages in the concave portion with the convex portion as a fulcrum, the lever is pressed and the toggle arm is pulled to properly strengthen the split housing. a lever long to be bound, upon binding, and the insertion pin portion to be mounted on the pin hole provided in the coupling portion and the toggle arm, arresting engagement projections of the lever front end
A pipe joint consisting of a lock pin having a gate-shaped latching rod . 2. The lock pin is provided on the housing.
And the pin holes drilled in the toggle arm.
And inserting the pin portion to be inserted into, Les to engage the recess of the coupling portion
Characterized in that free end to prevent the engagement projections of the bar tip on recess and gate-shaped hooking rod portion open to the outside, it is integrally formed via a coil spring portion from a single steel wire The pipe joint according to claim 1.