JPH0728290U - Pipe fitting - Google Patents

Abstract

(57) [Summary] [Object] To provide a victoric pipe joint in which both pipes facing each other for connection can be immediately and easily and easily connected by lever operation. In a pipe joint in which an annular gasket 3 that straddles both of the opposed pipes is covered and tightened by a split housing, one end of the housing 1, 1 is connected to each other by a hinge pin 4, and the other end is connected. Toggle arm 12
One end of the support portion 6 is pivotally supported, and the other end is provided with a convex portion 9 and a concave portion 1.
A coupling portion 8 having a locked portion 11 formed by connecting 0s is provided, and the other end of the toggle arm 12 is pivotally supported by a pivot pin 14, and the convex portion 9 is used as a fulcrum to form a recess 10 in the locked portion 11. The housings 1 and 1 are correctly coupled by a lever 17 provided with an engaging protrusion 16 that pivotally engages and firmly presses the coupling portion 8 and the support portion 6 via the toggle arm 12. Toggle arm 12 when coupled
And pin portions 2 for insertion into pin holes 19 and 20 provided in the connecting portion 8
2 and a lock pin 21 having a gate-shaped latching rod 23 for holding the lever tip engaged with the recess 10 of the locked portion is doubly locked.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 According to the present invention, both opposed pipes to be connected are connected to a split housing having a gasket inside, one end of which is rotatably connected, and the other end of which is connected with a toggle arm and an arm of the arm. By rotating the lever attached to the other end and the lever, the split housing is firmly connected and maintained, and a double safety mechanism at the time of connection is provided to connect the pipes. The present invention relates to a tightened pipe joint.

[0002]

[Prior art]

 A conventional split pipe joint is equipped with an annular gasket made of synthetic rubber, which has an inner lip with a lip that straddles both facing pipes to be connected, and covers the split housing from the outer periphery. At the same time, a victor joint in which both ends of the housing are connected by bolts and nuts to connect pipes has been well known for a long time.

[0003]

[Problems to be solved by the device]

 Since the above-mentioned victor joint is to join the two split housings by tightening bolts and nuts at both ends respectively, it takes time and effort 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 the split housing is tightened with bolts and nuts only on the other end side. It has also been devised to connect both pipes to be connected via a gasket.

However, even if it does in this way, the working time of the pipe connection cannot be significantly shortened, and in the case of drainage pipes such as sewage and muddy water by a sand pump and the extension of the connection, a work place is required. In a narrow place, tightening work with bolts and nuts is not easy, and simplification of pipe connection, work time reduction, and labor saving are not yet sufficient. In view of such a point, the present invention has an object to provide a pipe joint capable of connecting both pipes opposed to each other by a one-touch operation by lever operation.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the pipe joint of the present invention comprises an annular gasket made of rubber, which is provided on the inner circumference with a lip portion extending over both pipes facing each other to be joined, In a pipe joint which is fitted in a groove to cover the split housing, one end of the split housing is rotatably coupled. The other end of the split housing is a support part that connects one end of the toggle arm to one housing for rotation and rotation, and the other housing is a locked part with a convex part and a concave part on the outer surface. Providing a coupling section with a section.

At the other end of the toggle arm, a pivot pin is rotatably supported by a pivot pin, and an engaging protrusion for pivotally engaging the concave portion with the convex portion as a fulcrum is provided at the tip end thereof for lever action. Attach the long lever that correctly connects the two housings by pressing and pulling the toggle arm. In addition, 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 these pin holes and fixes both housings in the connected state.

The supporting portion and the coupling portion of the halved housing are formed by bifurcated flanges projecting oppositely so that the toggle arm fits along the outer peripheral side of the housing, and one end of the toggle arm is pivoted between the supporting portions. It is designed to be worn. Further, the lever is provided with a grip portion at a rear portion thereof so that a predetermined gap is held between the outer peripheral surface of the housing and the outer peripheral surface of the housing so that a hand is not caught.

The lock pin includes an insertion pin portion that is inserted through a pin hole formed in the connecting portion and the toggle arm, and a free end that suppresses an engaging protrusion of a lever tip that engages with a concave portion of the connecting portion. The gate-shaped latching rod that is open to the outside is formed integrally from a single steel wire with elasticity held by the coiled spring at one end.

[0009]

[Action]

 According to the present invention having the above-mentioned structure, an annular gasket made of synthetic rubber or the like having a lip portion extending over both pipes facing each other to be connected is formed into two parts which can be opened and closed by a hinge pin at one end. When the lever is placed closer to the housing, the toggle arm moves along the outer circumference of the housing so that the support arm and the connecting part can move. Move it so that it fits between the two forks.

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 recess 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 recess while the maximum length from the pivot pin is held while pressing the recess of the engaged portion with the tip surface of the engaging protrusion at the tip. Therefore, this operation allows the engaging protrusion at the lever end to stop the one housing in two parts, while the other housing is pulled by the toggle arm, so that the two housing parts 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, so that by inserting the insertion pin portion of the lock pin into these pin holes, both members can be inserted. Is fixedly connected. During this insertion, if the free end of the gate-shaped latching rod is inserted into the concave part of the connecting part, the gate-shaped latching rod is covered by the elastic force of the coil spring at one end. It is elastically engaged on the engaging protrusion of the lever tip that is 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 part, 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 The appearance is also good.

[0012]

【Example】

 An embodiment of the present invention will now be described with reference to the drawings. Fig. 1 is a perspective view of a pipe joint of the present invention, Fig. 2 is an exploded perspective view of the pipe joint, and 1, 1 are halves of a Victoria pipe joint. In the housing, the inner peripheral groove 2 is made of rubber or synthetic rubber and has an inner periphery with a lip portion 3a that is in contact with the outer peripheral surface of the pipe and extends over both pipes that are opposed to each other. The gasket 3 is fitted and covered, and the annular gaskets 3 loaded inside are compressed by tightening the housings 1 and 1 to hermetically connect the pipes. The hinge pins 4 are pivotally connected to each other.

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

Between the support portions 6, one end of a toggle arm 12 having a predetermined length and having an arc 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. In this case, the tip end is pivotally connected by a pivot pin 14, and an engaging protrusion that is pivotally engaged with the recess 10 through a recess 15 that abuts the protrusion 9 of the connecting portion 8 in front of the pin position. A child opening and closing device is provided for pulling the toggle arm 12 toward the other housing 1 side via the pivot pin 14 by a lever action with the convex portion 9 as a fulcrum to correctly connect the housings 1 and 1 to each other. A long lever 17 is provided.

Further, the lever 17 has a rear portion extended so as not to pinch a hand with the outer peripheral side surface of the housing when the housings 1 and 1 are coupled to each other, and the lever 17 is provided between the lever 17 and the outer surface of the housing. A grip portion 18 having a predetermined distance is formed. Further, the toggle arm 12 and the connecting portion 8 are provided with pin holes 19 and 20 which match when the housing is divided into two parts, and lock pins 21 to be fitted into the pin holes 19 and 20, respectively. Keep the binding state safe.

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

FIG. 3 is a vertical sectional side view showing a usage state of the pipe joint of the present invention, and FIG. 4 is a sectional view of a part thereof, in which the ends of the pipes 25, 26 are connected to both sides of the gasket 3 for connection. Then, the pipes are inserted through the insides of the lip portions 3a, 3a so that the pipes face each other, and the lever 17 side provided on one side of the halved housings 1, 1 covering the gasket 3 is positioned on the upper side.

When the lever 17 is pressed downward from the state of the phantom line in FIG. 3 in the direction of the arrow, the grip 18 at the rear portion of the lever 17 is pressed downward, and the recess 15 at the tip of the lever 17 causes the locked portion of the coupling portion 8 to be locked. The lever 17 is rotated around the pivot pin 14 as a fulcrum while being supported by the convex portion 9 of 11, and the tip of the engaging protrusion 16 having the maximum length from the pivot pin 14 causes the concave portion 10 of the engaged portion 11 to move. By pressing and engaging with the concave portion 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. Are joined together, and the lip portions 3a, 3a of the gasket 3 loaded inside are compressed and firmly adhered to the outer peripheral surfaces of the tubes 25, 26 opposed to each other to be connected, and the tubes 25, 26 are sealed in the sealed state shown in FIG. Can be connected.

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 engaging protrusion 16 at the tip of the lever 17 and the concave portion 10 are engaged with each other under strong pressure. Since the pivot pin 14 of the toggle arm 12 is moved to the outside as it loosens, the halved housings 1, 1 can be freely opened with the hinge pin 4 as a fulcrum.

[0020]

[Effect of device]

 According to the present invention having the above-described structure, the two-piece housing is joined by tightening the nuts with nuts on both sides of the two-piece housing or the joint portion on one side like the conventional Victaulic pipe joint. You can firmly tighten both housings by simply pressing the lever up and pressing from the top without any troublesome work, so both pipes facing each other can be connected instantly and easily. It is possible to connect in a sealed state by various works, the working place is bad, and even in a narrow place, it is possible to simplify the pipe connection, shorten the work time, reduce labor, labor saving, and improve work efficiency. You can

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, which may be an obstacle or a hindrance. Moreover, by devising the shape of the rear part of the lever, there is no danger of pinching your hand with the housing, and it has an excellent appearance.

Further, by using the lock pin according to the second aspect, it is possible to surely and easily maintain the coupling state of the split housing when the pipe is connected, and to double lock together with the elastic locking of the latching rod. It is possible to obtain a safety device having a simple structure of this kind of pipe joint.

[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 Part 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)

[Scope of utility model registration request] 1. A pipe joint in which an annular gasket that straddles both pipes to be connected is covered with a split housing to be fastened to each other, and one end of these housings is rotatably coupled, and the other is joined to one housing. A support portion pivotally attached to one end of the toggle arm, a coupling portion provided on the other housing with a locked portion in which a convex portion and a concave portion are connected to the side surface, and a tip portion pivotally attached to the other end of the toggle arm. In addition, an engaging protrusion that pivotally engages in the concave portion with the convex portion as a fulcrum is provided, and a long lever that correctly couples the split housing by pushing by the lever action and pulling of the toggle arm, and a toggle arm at the time of coupling. A pipe joint consisting of a lock pin that is mounted in a pin hole provided in the connecting portion. 2. The lock pin has an insertion pin portion that is inserted through a pin hole formed in the joint portion and the toggle arm, and a play that suppresses an engaging protrusion of a lever tip that engages with a recess of the joint portion. 2. The pipe joint according to claim 1, wherein a portal-shaped hooking rod portion having an open end is integrally formed from a single steel wire via a winding spring portion at one end.