JPH082183Y2 - Manhole fitting mouth stopcock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a mouth stopcock of a manhole joint.

(Prior Art) In general, a manhole joint which is composed of a main body pipe part having mouths formed at both ends and a branch pipe part branched from the main body pipe part is provided on the peripheral wall part of the manhole in the main body pipe part. It is fixed through. An inflow pipe is connected to the mouth of the main body pipe exposed outside the manhole, and a sub-pipe is connected to the mouth of the branch pipe. A water stopper is attached to the other opening of the main body pipe portion that opens into the manhole, if necessary.

Conventionally, as a mouth stop cock used for this manhole joint, a mouth stop plug which is generally composed of an insert part to be inserted into the mouth part of the main body pipe part and a packing adhered to one end of the insert part is generally used. Is.

(Problems to be solved by the invention) However, in such a conventional mouth stopcock, there is no means for preventing the insertion portion from coming off from the mouth of the manhole joint. In addition, if the insertion portion is simply inserted into the mouth portion, there is a possibility that the water shutoff plug may come off due to water pressure when overflowed water flows into the outflow port.

Therefore, it is necessary to provide some fixing means between the mouth portion of the manhole joint and the insertion portion of the water stopcock after the insertion portion is inserted into the mouth portion, which requires time and effort. still,
A screw is generally used as a fixing means.However, if a screw is used, a hole may be opened in the manhole joint and the water stopcock, which may cause leakage, and if the screw is used for a long time, the screw will be corroded. It is easy to come off. Also, it is troublesome to pull out the water stopcock from the mouth.

The mouth stopcock of the present invention focuses on the above-mentioned conventional problems, and separately provides a mouth stopcock that can be attached to the mouth of a manhole joint without being detached without using a fixing member. The purpose is to do.

(Means for Solving the Problems) In order to achieve the above object, a mouth stopcock of a manhole joint of the present invention comprises a main body tube portion having mouth portions formed at both ends, and a branch from the main body tube portion. Is a mouth water stop plug attached to one mouth of the main body pipe part of a manhole joint composed of a branch pipe part and a tip of an insertion part inserted into the mouth part of the main body pipe part. On the side, a locking portion that can be engaged with and disengaged from the branch pipe portion is provided.

(Operation) Since the mouth stopcock of the manhole joint of the present invention is provided with the engaging portion that can be engaged with and disengaged from the branch pipe portion at the tip end side of the insertion portion, And plug it into the
When the locking portion is engaged with the branch pipe portion, it can be attached to the mouth portion of the manhole joint without coming off. Further, the engagement between the locking portion and the branch pipe portion can be released, and the insertion portion can be removed from the mouth portion of the manhole joint by pulling out the insertion portion from the mouth portion of the main body pipe portion.

Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.

 First, the configuration of the embodiment will be described with reference to FIG.

FIG. 2 is a vertical cross-sectional view showing the manhole 1. A manhole joint 2 is fixed through the middle of the peripheral wall 1a of the manhole 1, and the lower end of the outer auxiliary pipe 3 penetrates through the lower end of the peripheral wall 1a. It is fixed.

The manhole joint 2 is composed of a main body pipe portion 21 having mouths 21a and 21b formed at both ends, and a branch pipe portion 22 branched from the main body pipe portion 21. It is fixed through the peripheral wall portion 1a of the No. 1 unit. That is, on the outside of the manhole 1, one opening 21a of the main body pipe portion 21 and the branch pipe portion 2 are provided.
2 are provided so as to be exposed, and the mouth portion 2 of the main body pipe portion 21 is provided.
The inflow pipe 4 is connected to 1a, and the upper end of the outer auxiliary pipe 3 is connected to the mouth of the branch pipe portion 22. Furthermore, the main body tube portion 21
The other mouth 21b is provided in the manhole 1, is normally opened, and is used as an outlet for overflow. In addition, it is also used as a peep when confirming the piping condition during piping and when cleaning the inside of the piping. In FIG. 2, reference numeral 5 denotes a mouth stopcock, and this mouth stopcock 5 is provided in the manhole 1 when cleaning the inside of the manhole 1 or when performing piping work in the manhole 1. It is attached to 21a.

FIG. 1 is a side view showing the mouth stopcock 5, and the mouth stopcock 5 has an insertion part 51a to be inserted into the mouth part 21b of the main body tube part 21 and one end of the insertion part 51a. Glued packing 51
b, a pressing portion 51c adhered to the back side of the packing 51b,
A plug body 51 is configured with a seal ring 51d attached to the outer periphery of the insertion portion 51a, and a shaft 52 is provided so as to penetrate the plug body 51. Further, a locking portion 52a is formed by bending the shaft 52 at a substantially right angle at the tip end portion of the shaft 51 projecting on the insertion portion 51a side, and the shaft projecting on the holding portion 51c side is formed. A handle 53 is fixed to the base end of 52. The handle 53 is for rotating the shaft 52, and is fixed so that the tip end thereof is in the same direction as the locking portion 52a. Further, the shaft 52 is a stopper body 51.
It is provided eccentrically from the center, and the engaging portion 52a can be engaged with and disengaged from the branch pipe portion 22 of the manhole joint 2.

Further, a coil spring 54 is provided between the plug body 51 and the handle 53, and the coil spring 54 urges the plug body 51 toward the tip side of the shaft 52.
Further, between the locking portion 52a of the shaft 52 and the plug body 51,
A nut 55 is provided, and with this nut 55 the plug body
The movement of 51 toward the tip side of the shaft 52 is restricted.

The shaft 52 is provided with a thread 52b at a position where the handle 53 is fixed and a position where the nut 55 is fixed.

Next, the operation of this embodiment will be described with reference to FIGS. 3 and 4.

FIG. 3 and FIG. 4 are longitudinal sectional views showing a procedure for mounting the mouth stopcock 5 on the mouth 21b of the main body tube portion 21 of the manhole joint 2.

That is, when the mouth stopcock 5 of this embodiment is attached to the mouth 21b of the main body tube portion 21 of the manhole joint 2, first, as shown in FIG. The part from the tip of the shaft 52 to the insertion part 51a of the plug main body 51 is inserted into the mouth part 21b of the main body tube part 21 in a state of facing upward. Next, the fourth
As shown in the figure, the shaft 52 is pushed in the axial direction until the locking portion 52a is located above the branch pipe portion 22, and
The shaft 52 is rotated so that 52a faces downward. Then, when the hand is released from the handle 53, the locking portion 52a is engaged with the branch pipe portion 22 by the spring force of the coil spring 54, so that the mouth stopcock 5 is connected to the mouth portion 21 of the manhole joint 2.
It is installed so that it does not come off in b. Further, in this mounted state, the coil spring 54 is in a contracted state, and a spring force is exerted in a direction of pressing the packing 51b of the plug main body 51 against the end surface of the mouth portion 21b, so that high water stopping performance can be obtained. .

When removing the mouth stopcock 5 of the present embodiment from the mouth 21b of the manhole joint 2, the shaft 52 is rotated to release the engagement between the locking portion 52a and the branch pipe portion 22 and to insert it. It can be easily removed only by pulling out the portion 51a from the mouth portion 21b of the main body pipe portion 21.

Further, since the handle 53 of the mouth stopcock 5 of this embodiment is fixed in the same direction as the locking portion 52a, when the shaft 52 is operated to rotate, the locking portion 52a of the handle 53 faces in the direction of the handle 53. The direction can be recognized and the operation is easy.

The embodiment of the present invention has been described in detail above with reference to the drawings.
The specific configuration is not limited to this embodiment, and even if there are design changes and the like within the scope of the present invention, they are included in the present invention.

For example, in the embodiment, the state in which the mouth stopcock is attached to the mouth of the manhole joint for the outer auxiliary pipe is shown, but it can be attached to the mouth of the manhole joint for the inner auxiliary pipe by the same operation.

Further, in the embodiment, the locking portion can be engaged with and disengaged from the branch pipe portion by rotating the shaft, but the locking portion can be engaged and disengaged by another operation such as sliding the shaft. Good.

(Effect of the Invention) As described above, the mouth stop cock of the manhole joint of the present invention is provided with the engaging portion so that the manhole joint does not come off. Since it can be attached, it is not necessary to provide a fixing means between the mouth portion of the manhole joint and the insertion portion of the water stopcock after the attachment, and an effect of saving labor can be obtained.

[Brief description of drawings]

FIG. 1 is a side view showing a mouth stopcock according to an embodiment of the present invention, and FIG.
The figure is a vertical cross-sectional view showing a manhole, and FIGS. 3 and 4 are vertical cross-sectional views showing a procedure for attaching a mouth stopcock to a mouth of a main body tube portion of a manhole joint. 1 ... Manhole 2 ... Manhole joint 21 ... Main body pipe part 21a, 21b ... Mouth part 22 ... Branch pipe part 3 ... Outer auxiliary pipe 4 ... Inflow pipe 5 ... Mouth stopcock 51 ... Plug body 51a ... Insert part 52 ... Shaft 52a ... Locking part

Claims (1)

[Scope of utility model registration request] 1. A main body pipe part having mouths formed at both ends,
A mouth water stopper attached to one mouth of the main body pipe part of a manhole joint configured with a branch pipe part branched from the main body pipe part. A mouth stop cock of a manhole joint, wherein a locking portion that can be engaged with and disengaged from the branch pipe portion is provided on the tip side of the insertion portion to be inserted.