JP2002054784A - Cap for end connection - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cap for an end connection suppressing the number of components without getting bulky, surely closing the end connection against a fluid pressure of a high water test, and facilitating the closing/opening works of the end connection. SOLUTION: This cap 20 for the end connection is provided with a cover body 21 detachably attached to the end connection 2 in a drain pipe 1 and capable of closing the end connection 2 and a lock member 27 having a sealing performance, and inserting the cover body 21 capable of turning about the axis of the end connection 2 and stopping thereof. The lock member 27 is provided with a shaft part 28, a hook part 35 capable of locking the rear face 3c of the stopper part 3, and a holding part 37 for turning the lock member 27. A regulation part 32 for regulating the movement of the cover body 21 in the detaching direction from the connecting part 2 is disposed in the shaft part 28.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection port cap for closing a connection port in a pipe joint or the like of a drainage pipe.

[0002]

2. Description of the Related Art Conventionally, a drainage pipe, for example, a drainage pipe joint of an apartment house or the like, is provided with a vertical pipe connection port for connecting a vertical pipe and a horizontal branch pipe connection port for connecting a horizontal branch pipe. Was. Further, in a drain pipe joint provided with a plurality of horizontal branch pipe connection ports, in consideration of a horizontal branch pipe to be connected in the future, a horizontal branch pipe is not connected to all horizontal branch pipe connection ports, and a predetermined In some cases, a closing member is attached to the horizontal branch pipe connection port to close the horizontal branch pipe connection port.

[0003] When a closing member is attached to these connection ports, a pipe whose inner circumference is closed with an outer diameter substantially equal to that of a horizontal branch pipe or the like to be inserted into the connection port is conventionally used. The body is used as a closing member, and the closing tube member is inserted into the connection port.

[0004] A substantially cylindrical packing is provided on the inner peripheral surface of these connection ports in order to ensure the sealing performance when inserting and connecting a standpipe or a lateral branch pipe. On the inner peripheral surface, there was provided one or more thin lip portions which were pressed against the outer peripheral surface of the pipe to be inserted to enhance the sealing property. Further, the lip portion of the packing is provided so as to be inclined inward toward the base portion side of the connection port so that the operation of inserting the pipe to be inserted into the connection port is easy and the sealing property is further improved. Was.

[0005]

However, in a case where a full water test is performed in a drainage pipe line, a fluid pressure such as a water pressure or an air pressure of at least about 30 kPa is applied. In order to prevent the member from coming off, the outer peripheral surface of a portion protruding from the connection port of the closed pipe member itself is clamped by a clamp means, and the clamp means is fixed to the concrete slab using fixing means such as bolts. (Hereinafter simply referred to as slabs).

That is, the components for closing the connection port require not only the closed pipe member but also a clamp means for clamping the outer peripheral surface of the closed pipe member and a fixing means for fixing the clamp means to the slab. As a result, the number of components has increased, and the space occupied by them has been required widely.

Of course, since there are many components for closing the connection port, when closing the connection port, the clamping means itself is fixed to the slab, the closed pipe member is inserted into the connection port, and , Clamping of the closed pipe member by the clamp means, at least three steps are required, and further, the fixing of the clamp means itself to the slab and the clamping of the closed pipe body member by the clamp means are performed at a plurality of positions, respectively. Because of the operation of the fixing means, it was very time-consuming. In addition, when connecting a new pipe to the connection port in the closed state, the operation of opening the connection port requires a process reverse to that described above, which is very troublesome.

[0008] As a compact water stopping jig for stopping water in the pipe, the jig is inserted into the pipe, the outer peripheral surface of the annular packing is brought into contact with the inner peripheral surface of the pipe, and the packing is further moved in the axial direction. Tighten the specified screw member to compress
In some cases, the outer peripheral surface of the packing is pressed against the inner peripheral surface of the pipe to stop the water in the pipe. However, even if such a water stop jig is used to close the connection port, such a water stop jig is attached to the connection port only by the frictional force acting outward in the radial direction of the packing. In addition, since the packing itself also has elasticity, it is difficult to say that the connection port is securely closed, and when a high fluid pressure acts, the pressure pops out of the connection port with strong force. In some cases, it is not preferable because it is dangerous.

The present invention has been made to solve the above-mentioned problems, and it is possible to surely close a connection port against a fluid pressure such as a water filling test without increasing the number of components without bulk. It is another object of the present invention to provide a connection port cap that can easily close and open the connection port.

[0010]

A connection port cap according to the present invention is a connection port cap which is removably attached to a connection port of a drainage pipe to close the connection port. The connection port has a sealing property with at least one of an inner peripheral surface side and an opening end surface side of the connection port to enable the connection port to be closed, and when the connection port is closed, the opening end face of the connection port is closed. A lid body having a flange portion that can be abutted on the side, and a locking member that penetrates the lid body so as to be able to rotate around the axial direction of the connection port portion and stop so as to have sealing properties. Wherein the locking member has a shaft portion that penetrates the lid main body along the axial direction of the connection port portion, and one end of the shaft portion extending in the base portion side direction of the connection port portion. Stopper portion disposed on the side of the connection port portion and disposed inside the base portion side of the connection port portion A hook portion capable of locking the rear surface side, and a grip portion that is disposed on the other end side of the shaft portion that protrudes from the lid main body and that is used for rotating the locking member. A restricting portion is provided on the shaft portion, the restricting portion being capable of contacting the lid main body, and capable of restricting the movement of the lid main body from the connection port in the removing direction.

It is preferable that the hook portion and the grip portion of the locking member are provided so as to protrude outward in a radial direction of the shaft portion about the shaft portion in the same direction.

Further, the hook portion at one end of the shaft portion of the locking member, or at least one of the grip portion and the regulating portion at the other end side, is configured to be detachable from the shaft portion. May be.

[0013] Further, the regulating portion may be arranged on the shaft portion such that an arrangement position along the axial direction of the shaft portion is adjustable. In this case, it is preferable that a male screw portion is provided on the shaft portion, and the regulating portion is screwed to the shaft portion so that an arrangement position along the axial direction of the shaft portion can be adjusted by turning the regulating portion.

[0014]

According to the connection port cap of the present invention,
While contacting the flange portion with the opening end surface side of the connection port, while disposing the lid body so as to close the connection port,
The hook portion side of the locking member is inserted into the connection port, and then the grip portion is operated to rotate the locking member together with the hook portion, so that the hook portion of the locking member can be locked to the stopper portion. If it arrange | positions on the back surface side of this, the closing operation | work of a connection port part can be complete | finished.

[0015] Thereafter, even when the lid body is subjected to a fluid pressure such as a water pressure or an air pressure in a full water test or the like, the lid body comes into contact with the regulating portion arranged on the shaft portion of the locking member even if the lid body tries to come off from the connection port. The stop member itself, the hook on one end side of the shaft portion through which the lid body is inserted,
Since the locking member is locked to the back side of the stopper portion, the locking member hardly moves, and as a result, the lid body, together with the locking member, is prevented from coming off from the connection port, The closed state of the connection port can be maintained. Of course, even if a higher fluid pressure is applied than in the full water test, the hook of the locking member locks the stopper of the connection port, so that the connection port can be reliably kept closed.

[0016] The work of closing the connection port, which can maintain the closed state even under such a pressure action, can be easily performed by using the arrangement of the lid body in the connection port and the rotation of the locking member.

Further, when opening the connection port, the grip portion of the locking member is operated to rotate the hook portion so as to be detached from the back side of the stopper portion. By pulling out the cap, the cap can be easily removed from the connection port, and the work of opening the connection port can be easily performed.

Further, the member for closing the connection port portion against the fluid pressure in a fullness test or the like can be constituted by a cap alone having a locking member assembled to the lid body, so that the number of components can be reduced, and Also, the space around the connection port is not occupied significantly.

Therefore, in the connection port cap according to the present invention, the connection port section can be reliably closed against a fluid pressure such as a full-water test without being bulky, suppressing the number of components, and The closing and opening operations of the connection port can be easily performed by arranging and detaching the lid body from the connection port and rotating the locking member.

If the hook portion and the grip portion of the locking member are protruded in the same direction radially outward with respect to the shaft portion around the shaft portion, the position and angle of the grip portion can be reduced. The arrangement position of the hook of the locking member during the rotation operation can be easily grasped, and the locking and unlocking of the hook of the locking member to and from the stopper can be accurately performed.

Further, if at least one of the hook at one end or the gripping portion and the restricting portion at the other end of the shaft of the locking member is configured to be detachable from the shaft, With the hook or the grip and the restrictor attached to one end, the shaft of the locking member is inserted through the lid body, and the grip and the restrictor are inserted to the other end. Alternatively, the hook member can be attached to easily attach the locking member to the lid body. Of course, even if packing around the shaft portion to ensure the sealing property between the shaft portion and the lid body is provided, at least the hook portion, or the grip portion and the regulating portion, from the shaft portion. One can be removed and the packing can be removed from the shaft of the locking member removed from the lid body or from the lid body from which the locking member has been removed, and can be easily replaced with a new packing.

Further, if the restricting portion of the locking member is arranged on the shaft portion so that the position of the restricting portion along the axial direction of the shaft portion can be adjusted, the restricting portion can be arranged along the axial direction of the shaft portion. By moving it, the distance between the restricting portion and the hook portion that abuts on the lid body can be adjusted.

Therefore, even if the connection port whose distance from the opening end surface of the connection port to the back surface of the stopper is closed is closed, the regulating portion is moved along the axial direction of the shaft. And a locking surface for locking the back surface of the flange portion of the lid body and the back surface of the stopper portion of the hook portion, which correspond to the distance from the opening end surface side of the connection port portion to the back surface side of the stopper portion. Can be adjusted, and the connection port portion in which the distance from the opening end surface side to the back surface side of the stopper portion has been changed can be easily closed by the cap.

In this case, if a male screw portion is provided on the shaft portion, and the regulating portion is turned and screwed to the shaft portion so that the arrangement position along the axial direction of the shaft portion can be adjusted, the following is possible. Actions and effects can be obtained.

That is, after the hook portion is disposed on the back surface of the stopper portion and the restricting portion is turned in a state in which the hook portion is in contact with the lid body, the hook portion side relatively approaches the restricting portion, and the hook portion is relatively moved. Can be pressed against the back surface of the stopper portion.As a result, the flange portion and the hook portion of the lid body sandwich the opening end of the connection port portion and the stopper portion, so that the cap is The connection port can be firmly closed without moving along the axial direction of the connection port.

[0026]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the connection port cap 20 of the embodiment is attached to the connection port 2 of the drainage pipe joint 1, and the connection port 2 is provided as shown in FIG. To
Horizontal branch pipe 12 communicating with various drain traps such as bathtubs and toilets
Is connected.

The connection port 2 has a substantially cylindrical shape, and has a stepped portion 2a which narrows inward at the front end, and a packing 5 is fitted from the front end surface to the inner peripheral surface. The upper edge side of the inner peripheral surface on the base side of the connection port 2 is shown in FIG.
As shown in FIG. 3, a stopper portion 3 for supporting an end surface of the horizontal branch pipe 12 when the horizontal branch pipe 12 is connected is formed. A horizontal branch pipe made of rubber or the like is provided on a support surface 3a of the stopper section 3 on the distal end side of the connection port 2. The receiving member 3b is fixed.

In the embodiment, the stopper portion 3 is configured by arranging a substantially semi-disc-shaped (three-month plate-shaped) rib on the upper side of the connection port portion 2. 14 and 15, two substantially semi-circular ribs 2d are arranged so as to face up and down or left and right, or a horseshoe-shaped rib is provided on the inner peripheral surface of the connection port 2. The stopper portion 3 may be configured by providing 2d.

As shown in FIGS. 1 and 3, the packing 5 has a substantially cylindrical main body 6 having a substantially cylindrical shape made of rubber or the like. A flange portion 7 formed so as to extend outward in the direction;
Lip portion 8 disposed on the entire circumference in the circumferential direction on the base side of the lip 8
And is provided. The flange portion 7 is formed so as to be fitted to the outer peripheral surface side of the step portion 2a including the opening end surface 2c of the connection port portion 2 itself. The lip 8
This is to ensure the sealing performance between the cap 20 and the outer peripheral surface of the later-described cylindrical portion 22 of the lid main body 21 and the lateral branch pipe 12, and is connected from the base side end of the main body 6 in a state where no load is applied. The protruding portion is provided so as to be inclined inward of the base portion side of the mouth portion 2. Further, the flange portion 7 and the lip portion 8 of the main body 6 are provided.
A fin-shaped support portion 9 for supporting the outer peripheral surfaces of the horizontal branch pipe 12 and the cylindrical portion 22 of the cap 20 is formed over the entire circumference in the circumferential direction. Further, a retaining portion 10 that protrudes radially outward from the entire circumference in the circumferential direction is formed at an end portion on the base portion side of the main body 6. The retaining portion 10 serves to prevent the packing 5 from coming off from the connection port 2 after the packing 5 is attached, and is provided so as to be inclined outwardly toward the base of the connection port 2, When the packing 5 is attached to the connection port 2, the packing 5 is fitted from the step surface 2 b of the step portion 2 a to the inner peripheral surface on the base side of the connection port 2, and the packing 5 is fixed to the connection port 2. It also plays a role and seals the inner peripheral surface of the connection port 2.

A metal annular cover 11 is provided around the flange 7 of the packing 5 in order to protect a portion exposed from the connection port 2 after the packing 5 is mounted from heat or the like. It is fitted.

If the lip portion 8 of the packing 5 allows easy insertion of the lateral branch pipe 12 and has good sealing performance with the outer peripheral surfaces of the lateral branch pipe 12 and the cap cylindrical portion 22, no load is applied. In this state, the packing 5 may project radially inward in the direction perpendicular to the axis of the packing 5 from the entire circumference in the inner circumferential surface of the main body 6 without being inclined.

The packing 5 may have a substantially cylindrical shape without the retaining portion 10 as in the embodiment, and may be provided by being adhered to the inner peripheral surface of the substantially cylindrical connection port 2. good.

Further, the lip portion 8 of the packing 5 is not limited to one as in the embodiment, but may be provided in plural.

The cap 20 of the embodiment is shown in FIGS.
As shown in 5, it is composed of two members, the lid body 21 and the locking member 27.

The lid body 21 is made of metal such as casting, and has a cylindrical portion 22 inserted into the connection port 2, a bottom portion 23 for closing the cylindrical portion 22, and an end portion of the cylindrical portion 22 on the bottom portion 23 side. , And a flange portion 25 extending outward in the radial direction. The outer diameter of the cylindrical portion 22 is
At the time of insertion into the inside, the dimensions are such that the entire circumference of the lip portion 8 of the packing 5 and the support portion 9 can be pressed. In addition, the flange 2
Reference numeral 5 is formed to have a dimension capable of abutting the end face side of the flange portion 7 of the packing 5 with the cover 11 interposed therebetween. This flange 25 is, as in the embodiment, provided with the cylindrical portion 2.
It is not necessary to project from the entire circumference of the second peripheral surface, but it may be partially projected from a plurality of locations.

At the center of the bottom portion 23, a boss 24 is formed through an insertion hole 24a along the axial direction of the connection port 2 at the time of closing, and the insertion hole 24a of the boss 24 is formed.
And the locking member 27 is assembled. The locking member 27 is a shaft 2 that is inserted through the insertion hole 24 a of the bottom 23.
8 and one end of the connecting portion 2 of the shaft portion 28 extending in the direction toward the base portion, and can lock the back surface 3c side of the stopper portion 3 disposed inside the base portion of the connecting portion 2 inside. Hook 3
5 and a grip portion 37 that is disposed on the other end side of the shaft portion 28 protruding from the lid main body 21 and that is used for rotating the locking member 27. In the case of the embodiment, the regulating portion 32 is moved from the end portion 30a of the shaft portion 28 on the grip portion 37 side.
The grip 37 is configured to be detachable from the shaft 28.

The shaft portion 28 is formed of a metal bar such as a steel bar, and has a columnar insertion portion 29 extending through the inner peripheral surface of the insertion hole 24a to the hook portion 35, and protruding from the bottom portion 23 to form an insertion portion. And a male screw portion 30 having a smaller diameter than that of the male screw 29 and having an external thread threaded on the outer peripheral surface. In the insertion portion 29, a concave groove 29a formed over the entire circumference in the circumferential direction is formed so as to be disposed in the region of the insertion hole 24a.
Inside the 9a, an O-ring 42 is provided which is pressed against the inner peripheral surface of the insertion hole 24a and the concave groove 29a to ensure the sealing between the boss portion 24 and the insertion portion 29.

Also, the shaft portion 28 can be brought into contact with the regulating surface 23a on the side of the bottom portion 23 exposed from the connection port 2, so that the movement of the lid body 21 from the connection port 2 in the removal direction can be restricted. The restricting part 32 is provided. In the case of the embodiment, the restricting portion 32 is constituted by a wing nut with a washer having knob portions 32a.

The grip portion 37 has a grip body 38 made of a metal plate such as a steel plate having an insertion recess 38 a at an end into which the male screw portion 30 can be inserted, and two nuts 39. 40. Then, the gripping portion 37 inserts the end portion 30 a of the male screw portion 30 into the insertion concave portion 38.
a, the insertion recess 38 of the grip body 38
The peripheral edge a is arranged and fixed to the shaft portion 28 by being clamped by nuts 39 and 40.

The hook 35 is formed of a metal plate such as a steel plate. The hook 35 is formed from the distal end 29b of the insertion portion 29 so that the engaging surface 35a on the grip 37 can be brought into contact with the back surface 3c of the stopper 3. In the case of the embodiment, it is disposed so as to protrude, and is welded to the tip of the insertion portion 29 and disposed and fixed to the shaft portion 28.

The grip 37 and the hook 35 are connected to each other as shown in FIG.
As shown in 4 and 5, they are arranged so as to protrude outward in the same direction in the shaft radial direction with the shaft 28 as the center.

In the case of the embodiment, the O-ring 42
The inner peripheral surface of the insertion hole 24a and the concave groove 29a is pressed against the inner peripheral surface, and the pressure contact force secures the sealing property between the lid main body 21 and the locking member 27, and rotates around the axial direction of the cylindrical portion 22. When the stop member 27 is rotatable and a large force is not applied, the stop member 27 is set in a range where the rotation of the lock member 27 can be stopped at that position.

The length of the insertion portion 29 in the shaft portion 28 of the locking member 27 is such that the restricting portion 32 is
It is set so that the hook 35 can be pressed against the stopper unit back surface 3c by turning it in a state of contacting the regulating surface 23a. That is, the length dimension of the insertion portion 28 is
Is inserted into the connection port 2, and the flange 25 is brought into contact with the end face 11 a of the opening end face 2 c of the connection port 2 where the packing flange 7 and the cover 11 are interposed.
5 is disposed on the back surface 3c side of the stopper portion 3 so that the back surface 3c
The male screw part 30 is slightly in contact with the bottom part 23.
The length to penetrate inside.

Further, the projection length of the hook portion 35 from the locking member shaft portion 28 does not protrude from the cylindrical portion 22 in the projection direction along the axial direction of the cylindrical portion 22, and the locking member 27 The hook portion 35 is set so as to be disposed on the back surface 3c side of the stopper portion 3 in the direction along the axial direction of the connection port portion 2 when rotated around the shaft portion 28.

The assembling of the connection port cap 20 of the embodiment will be described. First, the locking member 27 in a state where the restricting portion 32 and the grip portion 37 are removed and the O-ring 42 is fitted in the concave groove 29a. Prepare the end 30a of the external thread 30
Is inserted into the insertion hole 24a from the tip end side of the boss portion 24 on the bottom portion 23 of the lid body 21. Next, the restricting portion 32 was screwed into the male screw portion 30 protruding from the bottom portion 23, the nut 40 was screwed into the male screw portion 30, and the end portion 30a side of the male screw portion 30 was inserted into the insertion recess 38a. In this state, if the periphery of the insertion recess 38 a of the grip body 38 is clamped by the nuts 39 and 40 and the grip 37 is fixed to the male screw 30, the locking member 27 can be assembled to the lid body 21.

When the assembly is completed, the regulating section 3
2, the distance L1 from the back surface 25a of the flange portion 25 to the engaging surface 35a of the hook portion 35 in a state where the regulating portion 32 is in contact with the bottom regulating surface 23a is equal to the opening of the joint opening portion 2. It is adjusted so that it is slightly longer than the distance L0 from the end surface 11a to the back surface 3c side of the stopper portion 3, and when the locking member 27 is rotated as described later, the hook portion 35 interferes with the stopper portion 3. Set it not to.

Then, the cap 2 thus assembled
When the connection port portion 2 is closed by 0, first, the hook portion 3 of the locking member 27 is projected in the projection direction along the axial direction of the cylindrical portion 22.
5 does not interfere with the stopper 3, for example, FIG.
As shown by the two-dot chain line in FIGS.
7, the hook portion 35 is arranged in the horizontal direction by operating the grip portion 37, and as shown in FIG.
Is brought into contact with the opening end face 11a side of the connection port 2,
The cylindrical portion 22 of the lid body 21 is inserted into the connection port 2.

Next, as shown in FIG.
When the gripping member 7 is gripped and the locking member 27 is rotated, and the hook portion 35 of the locking member 27 is disposed on the back surface 3c side of the stopper portion 3, the closing operation of the connection port portion 2 can be completed.

At this time, as shown in FIG. 6C, the regulating portion 32 is rotated in a state where the regulating portion 32 is in contact with the bottom regulating surface 23a, and the shaft portion 28 of the locking member 27 is relatively connected to the connection port portion. 2 in the direction in which the hook 35 is removed.
May be brought close to or in contact with the stopper portion back surface 3c to complete the work of attaching the cap 20 to the connection port portion 2.

Thereafter, even when the lid body 21 is to be disengaged from the connection port 2 under a fluid pressure such as a water-full test, the lid body 21 comes into contact with the regulating portion 32 arranged on the shaft portion 28 of the locking member 27, and The stopper member 27 itself causes the locking surface 35a of the hook portion 35 at one end of the shaft portion 28 through which the bottom portion 23 of the lid main body 21 is inserted to abut on the back surface 3c side of the stopper portion 3 so that the stopper portion 3 is moved. Since the locking is performed, the locking member 27 does not move so as to cause the lid main body 21 to come off. As a result, the lid main body 21 and the locking member 27 are prevented from coming off from the connection port 2 together. As a result, the closed state of the connection port 2 can be maintained. Of course, even if a fluid pressure such as a water pressure or an air pressure higher than the full water test acts, the hook 3
Since the stopper 5 locks the stopper 3 of the connection port 2, the closed state of the connection port 2 can be reliably maintained.

The closing operation of the connection port 2 which can maintain the closed state even under such pressure action is performed by inserting the connection port 2 into the connection port 2 in the cylindrical portion 22 of the lid body 21 and rotating the locking member 27. It can be easily done by using.

When the connection port 2 is opened,
As a process reverse to the above, first, the grip portion 3 of the locking member 27
7, the hook portion 35 is rotated so as to be detached from the back surface 3c side of the stopper portion 3, and then the lid main body 21 is pulled out together with the locking member 27. The connection port 20 can be easily removed. In addition, the locking surface 3 of the hook 35
5a comes into contact with the stopper portion rear surface 3c, and the locking member 27
If it is difficult to rotate the locking member 27, the restricting portion 32 is loosened, the locking member 27 is pushed toward the connection port portion 2, the hook portion 35 is separated from the stopper portion rear surface 3c, and the locking member 27 is rotated. .

Further, a member for closing the connection port portion 2 against a fluid pressure such as a water filling test is provided on the lid body 21 by the locking member 2.
Since the cap 20 can be constituted by the cap 20 alone, the number of components can be reduced, the space is not bulky, and the space around the connection port 2 is not largely occupied.

Therefore, in the connection port cap 20 of the embodiment, the number of component parts is suppressed without being bulky.
The connection port 2 can be reliably closed against a fluid pressure such as a water filling test, and the insertion and withdrawal of the cylindrical portion 22 of the lid main body 21 and the rotation of the locking member 27 enable
The work of closing and opening the connection port 2 can be easily performed.

Further, in the embodiment, the hook portion 35 and the grip portion 37 of the locking member 27 are provided so as to protrude outward in the radial direction of the shaft portion around the shaft portion 27 in the same direction. Part 37
The position of the hook 35 of the locking member 27 at the time of the rotation operation can be easily grasped from the position and angle of the grip body 38. Therefore, while visually checking the arrangement position and the angle of the grip body 38 of the grip part 37, the locking member 27
The locking and unlocking of the hook 35 to the stopper 3 can be performed accurately.

Further, in the embodiment, the regulating portion 32 on one end 30a side of the shaft portion 28 of the locking member 27 and the grip portion 37 are configured to be detachable from the shaft portion 28. Therefore, as described above, the end portion 29b of the shaft portion 28
With the hook portion 35 attached to the side, the shaft portion 28 of the locking member 27 is inserted through the lid main body 21, and the grip portion 37 and the regulating portion 32 are attached to the other end 30 a side to easily The locking member 27 can be assembled to the lid body 21.

In such a configuration, around the shaft 28,
Even when the O-ring 42 as a packing for securing the sealing property between the shaft portion 28 and the lid main body 21 is provided,
The grip portion 37 and the regulating portion 32 are detached from the shaft portion 28, the O-ring 42 is detached from the shaft portion 28 of the locking member 27, and the O-ring 42 can be easily replaced with a new O-ring 42. By the way, this exchange work will be described in detail. With the cap 20 removed from the connection port 2, first, the nut 39 is loosened and removed from the end 30a side of the shaft 28, and then the grip body 38 and the nut 40 is removed from the end portion 30a side of the shaft portion 28, and further, the regulating portion 32 is turned to be removed from the end portion 30a side of the shaft portion 28. Then, the insertion portion 29 is protruded from the bottom portion 23 so that the hook portion 35 approaches the bottom portion 23 of the lid body 21, or the shaft portion 28 is pulled out from the bottom portion 23 to expose the portion of the concave groove 29a. The O-ring 42 can be removed from the end 30a of the shaft 28. Then, a new O-ring 42 is inserted into the groove 29a from the end 30a side.
The O-ring 42 can be easily exchanged by disposing the locking member 27 on the lid main body 21 in a process reverse to that described above.

Further, in the embodiment, the regulating portion 32 of the locking member 27 can be screwed into the male screw portion 30 provided on the shaft portion 28 so as to be movable along the axial direction of the shaft portion 28. I have. Therefore, by turning the regulating portion 32, the regulating portion 3 is moved so as to approach or separate from the hook portion 35.
2 can be moved along the axial direction of the shaft,
A regulating portion 32 and a hook portion 35 which contact the bottom portion 23 of the lid body 21;
And the distance can be adjusted.

Therefore, even if the connection port 2 whose distance L0 from the opening end face 11a side of the connection port section 2 to the back surface 3c side of the stopper section 3 is changed is closed, the restriction section 3
2 is moved along the axial direction of the shaft portion 28, and the lid body 21 is brought into contact with the regulating portion 32 in accordance with the distance L 0 from the opening end surface 11 a side of the connection port portion 2 to the back surface 3 c side of the stopper portion 3. Engagement surface 35a between flange back surface 25a and hook 35
And the distance L1 can be adjusted,
The connection port 2 in which the distance L0 from the opening end face 11a to the stopper back 3c is changed can be closed by the cap 20.

Further, in the case of the embodiment, a male screw portion 30 is provided on the shaft portion 28, and by turning the regulating portion 32, the arrangement position along the axial direction of the shaft portion 28 can be adjusted.
Is screwed to the male screw part 30 of the above. Therefore, after the hook 35 is disposed on the side of the stopper back surface 3c, the restricting portion 32 is rotated in a state of being in contact with the bottom restricting surface 23a of the lid main body 21, and the hook 35 is relatively moved to the restricting portion 32.
And the locking surface 35a of the hook 35 can be pressed against the back surface 3c of the stopper. That is, the flange 20 and the hook 35 of the lid body 21 sandwich the opening end surface 11a of the connection port 2 and the stopper 3 so that the cap 20 extends along the axial direction of the connection port 2. The connection port 2 can be firmly closed without moving.

In the embodiment, in order to secure the sealing property between the lid main body 21 and the locking member 27, a concave groove 29 a is provided in the insertion portion 29 of the shaft portion 28 of the locking member 27.
Although the case where the O-ring 42 as a packing is fitted in the concave groove 29a is shown, as shown in FIG.
A groove 23b is provided on the surface of the locking member 27 on the regulating portion 32A side on the bottom portion 23 side of A, and an O-ring 42 as a packing capable of being pressed against the outer peripheral surface of the insertion portion 29 is provided in the groove 23b. May be provided.

By the way, in the cap 20A shown in FIG. 8, the restricting portion 32A is formed of a normal nut, and the restricting portion 32A is inserted into the concave groove 23b and the insertion portion 2A.
9 is configured to be in contact with the bottom portion 23 of the lid main body 21A with a sleeve 33 having a cylindrical portion 33a through which the plug 9 can be inserted and a flange portion 33b protruding from an end of the cylindrical portion 33a interposed. .

In the cap 20A, when the regulating portion 32A is turned to approach the bottom portion 23, the end surface of the cylindrical portion 44a of the sleeve 44 presses the O-ring 42, and the locking member 2
The O-ring 42 presses the outer peripheral surface of the insertion portion 29 while enhancing the sealing performance between the cover 7 and the lid body 21A. That is, when the restricting portion 32A is tightened, the frictional force of the O-ring 42 can be increased, and the frictional force causes the locking member 27 after the hook portion 35 is disposed on the back surface 3c side of the stopper portion 3 to move.
, The rotation of the shaft 28 can be firmly stopped.

In the embodiment, the lid body 21 is formed of a cylindrical portion 22 inserted into the connection port portion 2 with the packing 5 interposed between the outer peripheral surface and the inner peripheral surface of the connection port portion 2, Part 22
And a bottom portion 23 for closing the connection port portion 2 having the packing 5 disposed on the inner peripheral surface thereof. However, like the cap 50 shown in FIG. 9, the lid body 51 is provided on the opening end face 2c side of the connection port 2A itself with the packing 45 interposed therebetween so as to cover the connection port 2A. The unit 52 may be provided and configured.

The lid main body 51 is made of metal such as a casting, and has a substantially disk-shaped closing portion 52 capable of closing the inside of the connection port 2A.
The opening end surface 2c of the connection port 2A with the packing 45 interposed is provided on the outer peripheral edge of the closing portion 52.
A flange portion 55 is formed around the entire circumference.
In the vicinity of the center of the closing portion 52, a boss portion 54 penetrating the insertion hole 54a is formed, and the insertion hole 54 of the boss portion 54 is formed.
The engagement member 27 is assembled by inserting the “a”. The locking member 27 is the same as that described in the embodiment,
The same reference numerals are given and the description is omitted. A cylindrical guide 53 that can be inserted into the connection port 2 is provided around the boss 54 of the closing section 52 so that the lid main body 51 can be easily arranged concentrically with the connection port 2A. ing.

The packing 45 includes a flat annular seal portion 45a abutting on the opening end surface 2c of the connection port 2A, a cylindrical guide portion 45b penetrating into the connection port 2 from the inner peripheral edge of the seal portion 45a, and Are formed in an annular shape having an L-shaped cross section.

When the cap 50 is attached to the connection port 2A, the guide portion 45b of the packing 45 is fitted into the connection port 2, and the sealing portion 45a is attached to the opening end face 2c of the connection port 2A.
Is arranged, the hook portion 35 of the locking member 27 assembled to the lid body 51 is set in a state where it does not interfere with the stopper portion 3, and the flange portion 55 is brought into contact with the packing seal portion 45a so that the flange portion 55 is brought into contact with the packing seal portion 45a. The closing portion 52 is arranged on the opening end face 2c side of the connection port 2A.

Next, the grip portion 37 is gripped and the locking member 2 is held.
7, the hook 35 of the locking member 27 is disposed on the back surface 3c side of the stopper 3, and the restricting portion 32 is further rotated while being in contact with the closing portion 52, thereby relatively engaging the locking member. 2
7 is moved in the direction of removal from the connection port 2A so that the locking surface 35a of the hook 35 is
c, the flange 55 and the hook 35 of the lid body 51.
Then, if the opening end face 2c of the connection port 2A and the stopper 3 are sandwiched with the seal 45a of the packing 45 interposed therebetween, the work of attaching the cap 50 to the connection port 2A is completed. Can be done.

With this cap 50, the same operation and effect as those of the cap 20 of the embodiment can be obtained, and the opening end face 2c can be obtained.
The connection port 2A in which the packing 45 is disposed on the side can be reliably closed.

Further, in the cap 20 of the embodiment, the grip main body 38 is held between two nuts 39 and 40 which are screwed into the male screw portion 30 when the grip portion 37 is attached to the shaft portion 28. Although the structure in which 37 is attached to the shaft portion 28 is shown, if the grip portion 37 can be attached to and detached from the shaft portion 28,
It is not limited to the embodiment. For example, FIG.
Like the cap 60 shown in FIG. 11, a groove 68a is provided in the shaft portion 68 of the locking member 27 along the axial direction.
A cylindrical portion 79 through which the shaft portion 68 can be inserted, a grip body 78 extending from the cylindrical portion 79, and a screw 80 screwed into a screw hole 79a of the cylindrical portion 79 so as to be able to protrude inward in the radial direction of the cylindrical portion 79. When,
May be configured. The grip portion 77 is formed by screwing the screw 80 into the screw hole 79a and pressing the screw 80 against the bottom surface 68b of the concave groove 68a in a state where the cylindrical portion 79 is covered with the shaft portion 68.
8 and fixed. The member denoted by reference numeral 80a is
A lock nut for preventing the screw 80 from loosening. With such a configuration, the gripping portion 77 can be easily attached to and detached from the shaft portion 68 by the operation of tightening and releasing the screw 80.

Further, such a structure may be applied to the restricting portion. That is, like the regulating portion 72 shown in FIG. 11, the regulating portion 72 is inserted into the cylindrical main body 72a through which the shaft portion 68 can be inserted and the screw hole 72b of the main body 72 so as to be able to protrude inward in the radial direction of the main body 72a. A screw 72c to be screwed may be used. The restricting portion 72 includes a main body 72a and a shaft portion 68.
Screw 72c and the lock nut 72d
Is screwed into the screw hole 72b to form the concave groove 68a.
And is fixed to the shaft portion 68 by being pressed against the bottom surface 68b. In such a configuration, the restricting portion 72 can be detachably provided on the shaft portion 68 and the restricting portion 72 can be fixed at an arbitrary position along the axial direction of the shaft portion 68. The distance between the regulating portion 72 and the hook portion 35 that abuts on the opening end surface 11a can be easily adjusted.
The connection port portion 2 in which the distance L0 from the side to the stopper portion rear surface 3c side is changed can be closed.

It should be noted that even if the regulating unit cannot adjust the movement,
If it is detachably provided on the shaft, it is easy to assemble it to the lid body and the packing 42 can be replaced. For example, as shown in a cap 90 shown in FIG. The regulating portion 9 is detachably attached to the attachment hole 68c.
2 may be attached. The restricting portion 92 is provided on the lid main body 21.
Main body 92a abutting on regulating surface 23a of bottom portion 23 in FIG.
A male screw portion 92b projecting from the main body 92a and having a smaller diameter than the main body 92a; and a nut 92 screwable to the male screw portion 92b.
The restricting portion 92 is detachably connected to the shaft portion 68 by passing the male screw portion 92b through the mounting hole 68c and fastening the nut 92c to the male screw portion 92b passing through the mounting hole 68c. It is arranged. By the way, assembly hole 6
If a plurality of 8c are arranged in the axial direction of the shaft portion 68,
By changing the position of the assembling hole 68c that penetrates the male screw portion 92b, it is also possible to adjust the arrangement position of the regulating portion 92 along the shaft portion 68 stepwise.

Of course, if the replacement of the packing 42 is not taken into consideration, or if the packing 42 can be replaced from the hook 35 side, the regulating parts 32 and 92, together with the gripping parts 37 and 77, use a shaft or the like by welding or the like. The structure may be fixed to the portions 28 and 68.

Further, in the cap 20 of the embodiment, the case where the hook 35 of the locking member 27 is fixed to the end portion 29a of the insertion portion 29 of the shaft 28 by welding is shown. You may make it detachably arrange | position with respect to the part 28. For example, the structure of the grip portion 37 is applied, and the insertion portion 2 is provided on the hook portion 35 side.
9 is provided, and the periphery of the concave portion provided on the hook portion 35 side is clamped by two nuts screwed into the male screw portion provided on the insertion portion 29, and the hook portion 35 is detachably mounted on the shaft. It may be arranged and fixed to the part 28. Further, as in a cap 90 shown in FIGS. 12 and 13, an end portion 29b of the insertion portion 29 is provided with a deformed portion 29c having a deformed cross section such as a quadrangular prism provided with a concave groove 29d. The main body 95a having a fitting hole 95b into which the end portion 29b and the deformed portion 29c can be fitted so that the back surface 3c can be locked, a screw hole 95c penetrating around the fitting hole 95b, and a screw hole 95c. And a screw 95d to be screwed together. The hook portion 95 is configured such that the deformed portion 29c side of the insertion portion 29 is fitted into the fitting hole 95b, and the screw 95d is screwed using the lock nut 95e.
If the screw 95d is fastened to the screw hole 95c so as to be inserted into the concave groove 29d of c, the hook portion 95 can be detachably provided on the shaft portion 68.

In such a structure, if the screw 95d is removed and the hook 95 is removed from the shaft 68, the locking member 27 can be pulled out of the lid body 21 and the O-ring 42 can be easily replaced. Can be. Of course, the locking member 27 can be easily attached to the lid main body 21 from the insertion portion 29 side.

Incidentally, in this cap 90, the hook 9
Not only the side of the grip 5 but also the side of the grip 77
8, the hooks 95, the gripping portions 77, and the regulating portions 92 at both ends of the shaft portion 68.
May be all provided detachably with respect to the shaft portion 68.

In the illustrated example, each cap 20
As the connection port 2.2A for mounting 50/60/90, the connection port for connecting the horizontal branch pipe 12 of the drainage pipe joint 1 is exemplified, but the connection port port for connecting the standing pipe may be used. Furthermore, if the connection port has a stopper,
The cap of the present invention may be used not only at the connection port of the drainage pipe joint but also at the connection port of another drainage pipe, for example, a cleaning port.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a use state of a cap according to an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view as viewed from a direction II in FIG.

FIG. 3 is a partially omitted cross-sectional view of a packing mounted on a connection port in the embodiment.

FIG. 4 is a cross-sectional view of the cap of the embodiment,
Corresponds to the IV-IV site.

FIG. 5 is a front view of the cap according to the embodiment.

FIG. 6 is a view for sequentially explaining the operation of closing the connection port using the cap of the embodiment.

FIG. 7 is a cross-sectional view showing a state where a horizontal branch pipe is connected to a connection port in the embodiment.

FIG. 8 is a cross-sectional view showing a usage state of a modified example of the cap of the embodiment.

FIG. 9 is a sectional view showing a use state of another modification of the cap of the embodiment.

FIG. 10 is a perspective view showing a modified example of the grip portion of the embodiment.

11 is a cross-sectional view illustrating a use state of the cap including the grip shown in FIG.

FIG. 12 is a cross-sectional view showing a use state of still another modified example of the cap of the embodiment.

13 is a perspective view showing a structure for attaching and detaching a hook portion to a shaft portion in the cap shown in FIG.

FIG. 14 shows a modified example of the stopper portion of the embodiment shown in FIG.
FIG.

FIG. 15 shows another modification of the stopper portion of the embodiment.
FIG. 3 is a diagram corresponding to FIG. 2.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... (Drainage pipe) Drainage pipe joint, 2.2A ... Connection port, 2c / 11a ... Open end face, 3 ... Stopper part, 3c ... Backside, 5.45 ... Packing, 12 ... (Drainage pipe) Pipe, 20 / 20A / 50/60/90: Cap, 21 / 21A / 51: Lid body, 25/55: Flange, 27: Locking member, 28/68: Shaft, 30: Male thread, 32 / 72/92: regulating part, 35/95 ... hook, 37/77 ... gripping part.

Claims (5)

[Claims] 1. A connection port cap which is detachably attached to a connection port of a drainage pipe and closes the connection port, wherein the connection port has an inner peripheral surface side or an opening end surface side. A lid body having a sealing property with at least one of the above and the connection port portion being able to be closed, and a lid body having a flange portion capable of abutting on the opening end surface side of the connection port portion when the connection port portion is closed, A locking member that has a sealing property, is rotatable around the axial direction of the connection port, and can be stopped so as to be inserted therein, and the locking member is configured to include: A shaft portion that penetrates the lid main body along the axial direction of the connection port portion, and is disposed on one end side of the shaft portion extending in the base portion side direction of the connection port portion, inside the base portion side of the connection port portion. A hook portion capable of locking the back side of the stopper portion disposed on the side, and the lid of the shaft portion And a grip portion for rotating the locking member disposed on the other end side protruding from the locking member. A cap for a connection port, wherein a restricting portion capable of restricting movement of the lid body in a detaching direction from the portion is provided. 2. The method according to claim 1, wherein the hook portion and the grip portion of the locking member are protruded in the same direction radially outward with respect to the shaft portion about the shaft portion. The connection port cap according to claim 1. 3. The hook portion at one end of the shaft portion of the locking member, or at least one of the grip portion and the regulating portion at the other end side, is configured to be detachable from the shaft portion. The connection port cap according to claim 1 or 2, wherein 4. The shaft according to claim 1, wherein the restricting portion is arranged on the shaft so that an arrangement position of the shaft along the axial direction can be adjusted. The connection port cap described. 5. A male screw portion is formed in the shaft portion, and the restricting portion is screwed to the shaft portion so that an arrangement position along the axial direction of the shaft portion can be adjusted by turning. The connection port cap according to claim 4, wherein