JPH076221Y2 - Plumbing cover - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a pipe cover for sealing around a drain pipe or the like protruding from a bottom plate of a cabinet to the outside.

[Conventional technology]

In a vanity table in which a washbasin, a makeup mirror, and the like are mounted on a cabinet, a drainage pipe is installed in the cabinet in order to drain the drainage from the washbasin to the floor. The drain pipe is connected to the floor pipe of the building by connecting the upper end to the washbasin and providing a trap midway through the bottom plate of the cabinet. Also, in the case where the electric water heater is housed in the cabinet and has a hot water supply function, the expansion water drain pipe for discharging the expansion water generated from the electric water heater is also pierced through the bottom plate in the same manner. Is normal.

When such a drain pipe is pierced through the bottom plate of the cabinet and there is a gap between the periphery of the drain pipe and the hole formed in the bottom plate, harmful insects such as cockroaches may enter the cabinet. In order to prevent this, a pipe cover is generally attached around the drain pipe so as to close the gap. An example of this piping cover is disclosed in Japanese Utility Model Laid-Open No. 62-21174. This is a structure in which a pipe cover made of rubber or soft synthetic resin is fixed to the opening formed in the bottom plate, and a drain pipe is inserted into this.

[Problems to be solved by the device]

Further, in order to ensure the sealing around the drain pipe, the wall thickness of the portion in contact with the peripheral surface of the drain pipe is made thin so that it is more easily elastically deformed than the portion fixed to the bottom plate. This thin part is
It is formed on the entire inner circumference of the hole into which the drainage pipe is inserted, and is fitted to the entire circumferential surface of the drainage pipe.

However, in the case where the thin wall portion contacts the entire circumference of the drain pipe, a considerable amount of force is required to insert the drain pipe even if the wall thickness is thin. This is because even if it is inserted with a loose force, the seal after construction cannot be sufficiently maintained, so it is necessary to properly install the inner diameter of the thin portion with respect to the outer diameter of the drain pipe and the radial length of the thin portion. Because there is.

In this way, if the degree of fitting between the drain pipe and the thin wall is strong,
When the drainage pipe is twisted in, the thin portion is also twisted and bent, and the strain increases. Therefore, it is not preferable in terms of appearance, and there is a possibility that elastic deterioration due to strain may progress and a sealing failure may easily occur.

Therefore, an object of the present invention is to reliably seal around the drain pipe and prevent deformation and deterioration of the sealing material.

[Means for Solving the Problems]

In order to achieve the above object, the piping cover of the present invention is
A pipe cover in which a pipe such as a drain pipe penetrates and a seal hole for elastically sealing the peripheral surface of the pipe is opened in the main body, and a rim running in the axial direction is projected on the peripheral surface of the pipe, It is characterized in that a thin sealing tongue is formed on the circumference, and the sealing tongue is circumferentially divided by a plurality of notches that are aligned with and surround the rim.

[Action]

The seal tongue collides with the peripheral surface of the pipe and is elastically deformed, and the seal pressure due to the elastic force is applied to the pipe. At this time, the deformation of each seal tongue is divided by the notches, so twisting does not extend over the entire circumference of the sealing surface of the pipe cover, and a high sealing pressure is set that reversely utilizes stress concentration in the notches. It Further, since the rim provided in the pipe enters into the cutout, the rim and the cutout can be used for positioning the pipe cover with respect to the pipe, and the displacement of the pipe cover can be prevented.

〔Example〕

Hereinafter, the features of the present invention will be specifically described with reference to the embodiments shown in the drawings.

FIG. 1 is a bottom view of a pipe cover showing an embodiment of the present invention,
2 is a plan view, and FIG. 3 is a sectional view taken along the line II of FIG.

In the embodiment, as shown in FIG. 6, a drain adapter (to be described later) that connects two drain pipes 51 of the washbasin 50 and the expanded water drain pipe 53 of the electric water heater 52 is covered. As described below.

The main body 1 of the pipe cover is made of, for example, a synthetic resin having elasticity such as polyethylene, and forms an oval base 2 and a cover portion 3 which is raised at the center. Base 2
As shown in FIG. 6, a flat surface is placed on the bottom plate 55 of the cabinet 54 of the vanity, and screw holes 2a are formed at four positions.

The cover portion 3 is formed as an oval-shaped region at a substantially central portion of the base 2, and has a seal hole 4 for the drain pipe 51 and an auxiliary seal hole 5 for the expanded water drain pipe 53. As shown in FIG. 1 and FIG. 2, the seal hole 4 is provided with notches 4a at four locations, and a seal tongue 4b having a length of the notch 4 in the radial direction is formed. . Seal tongue
4b is divided into four by the notch 4a to form the inner circumference of the seal hole 4, and the inner diameter thereof is slightly larger than the outer diameter of the insertion portion of the drain adapter. Further, as shown in FIG. 4A (enlarged sectional view taken along the line II-II in FIG. 2), the sealing tongue piece 4b is thinner than the wall thickness of the base 2 and the cover portion 3.

A shallow groove 6 is formed on the lower surfaces of the base 2 and the cover portion 3. The groove 6 is arranged concentrically around the auxiliary seal hole 5 and the straight portion 6a extending from the edge portion of the base 2 to the auxiliary seal hole 5, the sealing hole 4 and the surrounding portion 6b surrounding the auxiliary seal hole 5 on the lower surface of the cover portion 3. It is also possible to connect the circular portions 6c. Further, a crossing portion 6d that crosses the circular portion 6c is formed between the auxiliary sealing hole 5 and the sealing hole 4.

Figure 5 shows the drainage pipe 51 and the expansion water drainage pipe 53 as the drainage mains of the building.
FIG. 6 is a vertical cross-sectional view showing a state in which the main body 1 is connected to 56 and is covered by the main body 1. In the illustrated example, the drain pipe 51 and the drain pipe 53 are connected to the drain main pipe 56 by the drain adapter 10.

The drain adapter 10 includes a connection pipe 11 for the drain pipe 51 and an expansion water drain pipe.
A connecting pipe 12 for connecting 53 is provided on the upper surface, and a drain main is provided at the lower end.
The discharge pipe 13 to be inserted and connected to 56 is provided. The drain pipe 51 is inserted into the connection cylinder 11 and sealed and connected by the cap nut 11a. The expansion water drain pipe 53 is connected to the connecting pipe 12 by a union joint or the like. A float valve 12a for preventing drainage from flowing back to the electric water heater 52 is housed inside the connecting pipe 12.

Here, the groove 6 provided on the lower surface of the cover portion 3 as described above.
Is actually the shape of the upper end surface 10a of the drain adapter 10 and the connecting pipe 1
It is formed so as to fit the shape of the second base portion 12b.
That is, the surrounding portion 6b is formed so as to match the outer shape of the upper end surface 10a of the drain adapter 10, and the circular portion 6c has a diameter adapted to the base portion 12b of the connecting pipe 12.

As shown in FIG. 5, the drainage system connection work is performed after the drainage adapter 10 is previously attached to the drainage main pipe 56, and the cabinet 54 is installed through the adapter 10 through the opening 55a opened in the bottom plate 55. The main body 1 of the pipe cover is covered from above on the connecting cylinder 11 and the connecting pipe 12 protruding from the bottom plate 55, and the screw
The main body 1 is fixed to the bottom plate 55 by passing 2b through the screw hole 2a.

When the main body 1 is covered, the seal hole 4 moves downward with respect to the connecting cylinder 11, so the sealing tongue 4b bends upward as shown in FIG. 4 (b) to seal the peripheral surface of the connecting cylinder 11. Further, if a rim 11b is formed on the peripheral surface of the connecting cylinder 11 and a defect 4a is provided in accordance with the position of the rim 11b, the rim 11b will be omitted as shown in FIG. 4 (c). It can be set so that it fits into decision 4a. Therefore, the gap 4a and the connection cylinder 11 can be connected without forming a gap.

On the other hand, since the seal tongue piece 4b is divided by the vote 4a, even if the main body 1 is screwed into the connection tube 11,
Strain deformation is less than when the entire circumference is thin. That is, only distortion occurs in the seal tongue piece 4b, and the vote 4a
The other seal tongue pieces 4b separated by are not affected by the strain of each other, and the torsional deformation is reduced as a whole as compared with the case where the entire circumference is formed in a tongue shape.

Further, since the sealing tongue piece 4b is divided by the defect 4a, the bending stress when the connecting tube 11 is fitted is easily concentrated on the defect 4a. For this reason, there is a vacancy at both ends of each seal tongue 4b.
Since 4a is located, a high sealing pressure using the reaction force of stress concentration can be obtained.

Further, when the connecting pipe 12 is fitted into the auxiliary seal hole 5 from below, the circular portion of the groove 6 formed around the auxiliary seal hole 5 is formed.
6c facilitates floating around the auxiliary seal hole 5.
Therefore, even if the inner circumference of the auxiliary seal hole 5 is not thin, a large force is not required when fitting it into the connecting pipe 12,
The body 1 can be easily attached.

In addition, depending on the construction site, if the drain adapter 10 has a high level and projects from the opening 55a onto the bottom plate 55, the base 2
The upper end surface 10a of the drain adapter 10 and the base portion 12b of the connecting pipe 12 can be fitted into the surrounding portion 6b and the circular portion 6c in the groove 6 on the lower surface of the. Therefore, even if the level of the drainage adapter 10 is a little too high, the construction error can be absorbed by the groove 6 and the workability can be improved.

After fixing the main body 1 to the bottom plate 55 as described above, the drainage pipe 51 and the expansion water drainage pipe 53 are connected to the connecting cylinder 11 and the connecting pipe 12, respectively, to complete the construction of the piping system.

If the straight portion 6a and the transverse portion 6b are incised in the groove 6 provided on the lower surface of the main body 1, the main body 1 can be expanded from the seal hole 4 portion and can be easily attached to and detached from the pipe. You can do it.

[Effect of device]

As described above, in the pipe cover of the present invention, the thin sealing tongue is formed on the inner periphery of the seal hole through which the pipe penetrates, and these are divided into a plurality of in the circumferential direction by the notches cut in the radial direction, A rim provided on the peripheral surface of the pipe is inserted into this notch. Therefore, even if the seal tongue is twisted due to the insertion of the pipe, the deformation of the seal tongue unit can be suppressed. Therefore, compared with the case where the entire circumference of the seal hole is a thin tongue piece, the seal tongue piece is less distorted and deformed, so that a good seal can be obtained without elastic deterioration. Further, since the seal tongue has a notch between its adjacent parts, the bending stress when the pipe is inserted is likely to concentrate in this notch. For this reason,
The elastic reaction force of the seal tongue includes the reaction force of such stress concentration, and the circumference of the pipe can be covered with a high sealing pressure.

Further, since the notch is provided in accordance with the position of the rim of the pipe, the pipe cover can be easily positioned with respect to the pipe by using the fitting between the rim and the notch. Further, due to the engagement relationship between the rim and the notch, the rotation of the pipe cover around the pipe is restrained, and the work without displacement can be performed.

[Brief description of drawings]

1 is a bottom view of the main body of the piping cover of the present invention, FIG. 2 is a plan view, FIG. 3 is a sectional view taken along the line I--I of FIG. 2, and FIG. 4 (a) is of FIG. II-II line enlarged sectional view taken along the arrow
FIG. 4 (b) is a cross-sectional view showing the deformation of the seal tongue piece by fitting into the drain pipe or drain adapter, FIG. 4 (c) is a cross-sectional view showing the fitting of the rim into the notch, and FIG. 5 is drainage. FIG. 6 is a cross-sectional view showing the construction of the adapter and the piping cover, and FIG. 6 shows an example in which the bottom plate of the vanity is equipped with the piping cover. 1: Main body, 2: Base 2a: Screw hole, 2b: Screw 3: Cover part, 4: Seal hole 4a: Notch, 4b: Seal tongue 5: Auxiliary seal hole, 6: Groove 6a: Straight part, 6b: Enclosed Part 6c: circular part, 6d: transverse part 10: drain adapter, 10a: upper end surface 11: connecting tube, 11a: cap nut 11b: rim, 12: connecting pipe 12a: float valve, 12b: base 13: discharge pipe 50: Washbasin, 51: drain pipe 52: electric water heater, 53: expanded water drain pipe 54: cabinet, 55: bottom plate 55a: opening, 56: drain main

Claims (1)

[Scope of utility model registration request] 1. A pipe cover having a main body provided with a seal hole through which a pipe such as a drain pipe penetrates and which elastically seals the peripheral face of the pipe, wherein a rim running in the axial direction is projected on the peripheral face of the pipe. Form a thin seal tongue on the inner circumference of the seal hole,
A pipe cover characterized in that the sealing tongue is circumferentially divided by a plurality of notches which are aligned with and surround the rim.