JP2003003539A - Cover for cleaning opening cover and cover mounting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce thickness of a cover to prevent infiltration of rainwater or the like from a cleaning opening cover to a drainpipe passage. SOLUTION: The cover 2 is attached to the upper side of the cleaning opening cover 1 of the drainpipe passage, a vent 7 is arranged in the periphery of a cover body part 4, and, the vent 81 of the cleaning opening cover 1 and the vent 7 of the cover 2 are in a communicating state when being in a state that the cover 2 is mounted to the cleaning opening cover 1. The cover 2 of the cleaning opening cover 1 is bottomless, as a result, the thickness of the cover 2 is reduced, and moreover, infiltration of overflowed rainwater or the like from the vent to the inside of the cleaning opening is prevented by interposing a float 11 to open and close a communication port 12 inside the communication port 12 formed between the vent 81 of the cleaning opening cover 1 and the vent 7 of the cover 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover for a cleaning port lid in a drainage pipeline.

[0002]

2. Description of the Related Art A drainage pipe is arranged at a predetermined position in a drainage pipe, and a cleaning port is extended upward from the drainage pipe, and a lid (1C) is attached to the cleaning port. There is. This lid (1C)
Is equipped with a vent (8C) for introducing atmospheric pressure into the drainage pipeline. However, if the lid (1C) is provided with the ventilation port (8C), rainwater or the like may enter the cleaning port through the ventilation port (8C). Therefore, conventionally, for example, an air vent body as shown in FIG.
(2C) was attached to the lid (1C) (Japanese Patent Laid-Open No. 9-328793).
issue). This air vent body (2C) is a main body (4C) in which a ventilation passage (7C) is installed in the horizontal direction, and a ventilation pipe portion (81C that is inserted from the lower side of the main body (4C) and communicates with the ventilation passage (7C). The air vent pipe (2C) is attached to the upper side of the lid (1C) by inserting the ventilation pipe into the ventilation port (8C) of the lid (1C) attached to the cleaning port. In this way, the vent hole (8C) of the lid (1C) is covered with the air vent body (2C) to prevent rainwater and the like from entering.

[0003]

However, since the air vent (7C) is provided in the air vent body (2C) in the horizontal direction, the air vent body (2C) has a bottom and a large thickness. There was a problem that it protruded greatly and interfered with the surroundings. In addition, when rainwater or the like overflows on the lid (1C), there is a problem that the rainwater or the like enters the cleaning opening from the ventilation passage (7C) of the air vent body (2C).

[0004]

As a means for solving the above-mentioned conventional problems, the present invention provides a lid for a cleaning port of a drainage pipe.
The cover (2,2A, 2B) attached to the upper side of (1,1A, 1B), and the ventilation holes (7,9A, 9B) around the cover body (4,3A, 3B).
B) is arranged, and the cover (2, 2A, 2B) is attached to the cleaning port lid (1, 1).
(A, 1B), the ventilation port (81, 11A, 11B) of the lid (1, 1A, 1B) for the cleaning port and the ventilation port (7, 9A, 7B, 2B) of the cover (2, 2A, 2B).
9B) Cover of the cleaning port lid (1,1A, 1B) that is in communication with
It provides (2,2A, 2B). It is preferable that an engaging piece (6, 8A) inserted into the mounting hole (8, 10A) of the cleaning port lid (1, 1A) is extended from the cover (2, 2A). A recess (3) is provided in the center of the lower surface of the cover body (4), and the engaging pieces (6, 6) are arranged inside the recess (3).
Vent grooves (71, 71) having vent holes (7, 7) opening at the peripheral edge of the cover body (4) are preferably provided radially from the peripheral wall of the cover body part (4). Mouth lid
The cover (2) of (1) is attached to the cleaning port lid (1), and the ventilation port (81) of the cleaning port lid (1) and the ventilation port (7) of the cover (2) are attached.
A float (11) that opens and closes the communication port (12) is inserted in the communication port (12) formed between and. Furthermore, the lid for the cleaning port
A collar (9) protruding upward is provided around the mounting hole (8) of (1), and the engaging pieces (6, 6) of the cover (2) of the cleaning port lid (1) are attached to the lid (8). Insert and engage the collar (1) of 1), and the collar of the lid (1)
It is preferable to interpose a float (11) vertically movable between (9) and the peripheral wall of the recess of the cover (2). Furthermore, the enclosure (2A, 2B) is provided with a communication port (5A, 5B) at the center of the lower surface of the cover.
(4A, 4B) are provided, and the float (7A, 7B) which is guided by guide grooves (6A, 6B) on the outside of the surrounding wall (4A, 4B) and moves up and down to open and close the communication port (5A, 5B) ) Is attached to the cover (2A, 2
B) attached to the cleaning port lid (1A, 1B), the ventilation port (11A, 11B) and the cover (2A, 2B) of the cleaning port lid (1A, 1B)
The ventilation holes (9A, 9B) of the cover are the walls (4A, 4B) of the cover (2A, 2B).
It is preferable that they are in a communication state via the communication ports (5A, 5B) of B). Furthermore, engaging pieces (8A, 8A) inserted into the mounting hole (10A) of the cleaning port lid (1A) from a predetermined position on the lower edge of the surrounding wall (4A).
A) is preferably present.

[0005]

[Function] Attach the covers (2, 2A, 2B) to the cleaning port lids (1, 1A, 1B). In this way, in the drainage pipe, the vent (7,9A, 9B) of the cover (2,2A, 2B) is passed through the vent (81,11) of the lid (1,1A, 1B).
Atmospheric pressure is introduced from A, 11B). For rainwater, etc., the cover (2,2
The main body (4, 3A, 3B) of (A, 2B) prevents the lid (1, 1A, 1B) from entering the cleaning opening through the vent holes (81, 11A, 11B). The covers (2, 2A, 2B) are bottomless, and the thickness is reduced accordingly. Furthermore, when rainwater, etc. overflows on the lids (1, 1A, 1B), the floats (11, 7A, 7B) float up and block the communication ports (12, 5A, 5B), and the rainwater, etc. Vents for (1,1A, 1B) (81,11A, 11B)
From entering into the cleaning mouth.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION [Embodiment 1]
An example will be described. As shown in FIGS. 1 and 2, the dome-shaped cover (2) attached to the upper side of the cleaning port lid (1) of the drainage pipe is a cover main body having a recess (3) in the center of the lower surface. (4), a plurality of engaging pieces (6, 6) having lower end claws (5, 5) protruding downward from the center of the recess (3) of the main body (4), and the main body (4) A plurality of ventilation grooves (71, 71) radially provided from the peripheral wall of the recess (3) and having ventilation holes (7, 7) opening to the peripheral edge of the cover body (4)
Consists of.

As shown in FIG. 3, a drain port cleaning port lid
A mounting hole (8) having a vent hole (81) is provided through the center of (1), and a cylindrical collar (9) protruding upward is provided around the mounting hole (8), A collar projecting portion (10) is projectingly formed on the inner circumference of the collar (9). Color of the lid (1)
(9) With the annular float (11) interposed vertically between the projecting portion and the peripheral wall of the recess (3) of the cover (2), engage the locking piece of the cover (2) with the collar ( 9), the tip claws (5, 5) of the locking piece engage with the collar protruding portion (10) of the collar (9) as shown in FIG.
(2) is mounted and fixed on the lid (1).

The annular float 11 is preferably made of a foamed resin having closed cells such as foamed polystyrene, foamed polyethylene, foamed polypropylene, foamed polyurethane, and ethylene-propylene rubber. Alternatively, the annular float (11) is preferably a hollow body made of synthetic resin. When a foamed resin is used as the material, the density of the annular float (11) is 0.02 to 0.4 g /
It is desirable that the amount is ml, and preferably 0.04 to 0.2.
It is preferably g / ml.

When the cover (2) is mounted and fixed on the lid (1) as described above, as shown in FIG.
A communication port (12, 12) is formed between the ventilation port (7, 7) of the lid and the ventilation port (81) of the lid (1). As shown by the arrow in FIG. 4, the drain pipe is connected to the cover (1) through the vents (7, 7) of the ventilation grooves (71, 71) of the cover (2) and the communication ports (12, 12). Since the atmospheric pressure is introduced from the ventilation port (81) of (), the inside of the drainage pipeline is not in a negative pressure state or a pressurized state, and the pipe is not clogged. Further, rainwater or the like is prevented by the main body of the cover (2) from entering the cleaning opening through the ventilation opening (81) of the lid (1). Further, when rainwater or the like overflows on the lid (1), the annular float (11) floats up and the cover (2) as shown in FIG.
The inner surface of the lid (1) is closed and the communication openings (12, 12) are closed to prevent the rainwater and the like from entering the cleaning opening through the ventilation opening (81) of the lid (1).

[Second Embodiment] FIGS. 6 and 7 show another embodiment of the present invention. In this embodiment, the dome-shaped cover (2A) has a rectangular enclosure in the center of the lower surface of the main body (3A).
(4A) is provided, the pair of side walls (41) facing each other of the surrounding wall (4A).
A, 41A) are provided with communication ports (5A, 5A). Further, guide grooves (6A, 6A) extend from both ends of a pair of other side walls (42A, 42A) facing each other of the surrounding wall (4A). A float (7A, 7A) made of a foamed resin similar to that of the previous embodiment is vertically movably inserted in the guide groove (6A, 6A). Further, from the lower surface of both side walls (42A, 42A) of the surrounding wall (4A), the engaging piece (8
(A, 8A) and the main body (3A) of the cover (2A).
A plurality of cutout-shaped vent holes (9A, 9A) are formed on the periphery of (A).

The cover (2A) is placed on the lid (1A) by fitting the engagement pieces (8A, 8A) into the pair of mounting holes (10A, 10A) of the cleaning port lid (1A). Installed, the atmospheric pressure is from the peripheral air vents (9A, 9A) of the cover (2A) to the side wall (41) of the surrounding wall (4A).
A, 41A) through the communication port (5A, 5A) and the vent (11A) of the lid (1A)
A) will be introduced into the drainage pipeline. If rainwater enters the cover (2A), the float (7A, 7A) will float and the communication port (5A
(A, 5A), and rainwater is covered (1A) through the communication port (5A, 5A)
Entry into the cleaning opening is prevented through the ventilation port (11A).

[Third Embodiment] FIG. 8 shows still another embodiment. In this embodiment, in the cover (2) of the first embodiment, the engagement piece (6) is shortened, and the engagement step (91) is formed on the upper edge of the collar (9) of the lid (1). Collar (9) engagement step (9
The tip claw portion (5) of the engaging piece (6) of the cover (2) is engaged with 1).

[Fourth Embodiment] FIGS. 9 and 10 show still another embodiment. In this embodiment, the cover of Embodiment 2 is used.
In (2A), from the surrounding wall (4A) on the bottom surface of the main body (3A) to the engaging piece (8
While (A) was inserted, a plurality of ears (81A) are provided on the periphery of the main body (3A), and the engaging pieces (8A) are inserted from each ears (81A).
To hang down. In the cover (2A), the engagement piece (8A) of the cover (2A) is engaged with the mounting hole (10A) provided in the peripheral portion of the lid (1A).

[Fifth Embodiment] FIGS. 11 and 12 show still another embodiment. This embodiment is also a modification of the second embodiment, in which the vent hole (9B) is arranged above the peripheral edge of the cover body (3B). Furthermore, the ear (81) of the cover body (3B)
B) is engaged with an inverted L-shaped locking tool (10B) provided on the peripheral portion of the lid (1B). That is, place the cover (2B) on the lid (1B), and
If the cover (2B) is slightly rotated as indicated by an arrow in 2, the ear portion (81B) of the cover (2B) is a locking member of the lid (1B).
Engage with (10B).

[0015]

According to the cover of the present invention, since the ventilation passage is provided on the lower surface of the main body, the cover is bottomless, the thickness of the cover can be reduced accordingly, and the interference to the surroundings is reduced accordingly. Furthermore, overflowing rainwater and the like will not enter the cleaning port through the ventilation passage.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention.

FIG. 1 is a bottom perspective view of a cover.

FIG. 2 is a perspective view of a cover.

FIG. 3 is a perspective view of a cleaning port lid and an annular float.

FIG. 4 is an explanatory side sectional view showing a state in which the cover is attached to the lid.

FIG. 5 is an explanatory side cross-sectional view showing a state in which the cover is attached to the lid (annular float floating state). 6 and 7 show another embodiment of the present invention.

FIG. 6 is a bottom perspective view of the cover.

7 is a cross-sectional view taken along the line AA in FIG. FIG. 8 shows still another embodiment of the present invention.

FIG. 8 is an explanatory side sectional view showing a state in which the cover is attached to the lid. 9 and 10 show still another embodiment of the present invention.

FIG. 9 is an explanatory sectional side view showing a state in which the cover is attached to the lid.

FIG. 10 is a plan view of the cover. 11 and 12
Shows another embodiment of the present invention.

FIG. 11 is an explanatory side sectional view showing a state in which the cover is attached to the lid.

FIG. 12 is a plan view of the cover.

FIG. 13 is an explanatory sectional side view of a conventional example.

[Explanation of symbols]

1,1A, 1B Cleaning port lid 2,2A, 2B cover 3 recess 4,3A, 3B cover body 4A, 4B wall 6A, 6B guide groove 6,8A engagement piece 81A, 81B ear 7,9A, 9B cover vent 71 Ventilation groove 8,10A mounting hole 81,11A, 11B Vents for the cleaning lid 9 colors 10B inverted L-shaped locking device 11,7A, 7B float 12,5A, 5B communication port

Claims (7)

[Claims] 1. A cover attached to an upper side of a cleaning port lid of a drainage pipe, in which a ventilation hole is arranged around a cover body, and the cover is attached to the cleaning port lid. The cover of the cleaning port lid is characterized in that the ventilation port of the cleaning port lid and the ventilation port of the cover are in communication with each other. 2. The cover for a cleaning port lid according to claim 1, wherein an engaging piece inserted into an attachment hole of the cleaning port lid is inserted from the cover. 3. A cover body is provided with a recess at the center of the lower surface thereof, the engaging piece is arranged inside the recess, and a ventilation wall opening from the peripheral wall of the recess to the peripheral edge of the cover body. The cover of the cleaning port lid according to claim 2, wherein the ventilation groove having the port is radially provided. 4. The cover of the cleaning port lid according to any one of claims 1 to 3 is attached to the cleaning port lid, and is formed between the ventilation port of the cleaning port lid and the ventilation port of the cover. A cover mounting structure in which a float for opening and closing the communication port is inserted in the communication port. 5. The mounting hole of the cleaning port lid is provided with a collar protruding upward, and the engaging piece of the cover of the cleaning port lid according to claim 2 or 3 is attached to the collar of the lid. The cover mounting structure according to claim 4, wherein the cover is inserted and engaged, and a float is vertically movably interposed between the collar of the lid and the peripheral wall of the recess of the cover. 6. An enclosure wall provided with a communication port is provided in a central portion of a lower surface of the cover, and a float, which is guided by a guide groove to move up and down to open and close the communication port, is attached to the outside of the enclosure wall. The cleaning according to claim 1, wherein the ventilation port of the cleaning port lid and the ventilation port of the cover are in communication with each other through the communication port of the surrounding wall of the cover in a state in which is attached to the cleaning port lid. Mouth lid cover. 7. The cover for a cleaning port lid according to claim 6, wherein an engaging piece inserted into a mounting hole of the cleaning port lid is inserted from a predetermined position on the lower edge of the surrounding wall.