JP3114979U - Overflow pipe cap and its mounting structure - Google Patents

Abstract

An object of the present invention is to reduce the weight of a cap and simplify its attachment and detachment so that various types of outer diameter overflow pipes can be handled with as few types of caps as possible.
A plastic cap (8) applicable to a plurality of types of plastic overflow pipes (1) having different outer diameter reference dimensions, wherein the elastic deformation stress between each of the plurality of types of overflow pipes (1) and / or The overflow pipe plastic cap 1 includes a plurality of fitting portions 8d and 8e that are detachably fitted to the overflow pipe 1 by using a surface contact frictional force.
[Selection] Figure 5

Description

  The present invention relates to a plastic cap having a simple detachability with respect to a plastic overflow pipe that functions as a drainage channel for rainwater or the like.

  In recent years, global warming caused by carbon dioxide is considered to be one cause, but localized heavy rains are frequently occurring in various parts of Japan. Since such a phenomenon has been rare in the past, it has been dealt with only by installing a drain as a countermeasure against rainwater.

  However, in order to cope with recent heavy rains, the drainage capacity of conventional drains may not be sufficient, and even if the drainage capacity is originally sufficient, the drainage capacity is not good due to clogging phenomenon caused by fallen leaves. If it falls, there may be a catastrophic case where water overflows on the veranda or the rooftop and flows into the room in response to an emergency increase in rainfall.

  In order to prevent such a phenomenon, an overflow pipe is optimally installed. In this case, the larger the inner diameter of the overflow pipe, the higher the discharge capacity. However, it is necessary to select an appropriate inner diameter of the overflow pipe in consideration of the height of the water level.

  The material of the overflow pipe is preferably made of plastic that is lightweight and excellent in water resistance and durability. Among them, the hard vinyl chloride VP pipe is inexpensive, easily available from the market, and excellent in water resistance. Currently, plastic overflow pipes are mainstream.

  By the way, although it is a plastic overflow pipe installed horizontally with respect to the ground, in order to maintain its function over a long period of time, in order to prevent foreign matter from entering the pipe and deterioration due to sunlight, It is indispensable to provide a cover at the end opening on the outer wall of the veranda or the rooftop.

  As a method of providing a cover at the end of the plastic overflow pipe, at present, as shown in FIG. 6, a hard vinyl chloride elbow 3 is attached to the end 1a of the overflow pipe 1 projecting from the outer wall 2 and downward. A method of dropping rainwater, a method of attaching a plastic cap 4 over the end 1a of the overflow pipe 1 protruding from the outer wall 2 as shown in FIG. 7 to the outer wall with a screw 5, a method of removing the overflow pipe 1 as shown in FIG. A method is known in which a cover 6 made of aluminum die casting is fixed to an end 1a opened in the outer wall 2 by a leaf spring 6a, and a sealing agent 7 is applied around the cover 6 or the end 1a. Although it has the functionality to cover the end of the overflow pipe, it is not easy to attach to and detach from the overflow pipe. It is not.

  The work leading up to the completion of a building is usually carried out by a professional contractor in the order of exterior wall construction, waterproof construction, and exterior wall painting, but the installation of the overflow pipe itself is usually carried out by the waterproof construction contractor. Caps and covers such as caps are usually attached by inexperienced exterior wall painters, not by specialists in waterproofing work. It is an urgent issue.

  In view of the above situation, in order to maintain the function of the plastic overflow pipe for a long period of time, it is indispensable to attach a cap to prevent the entry of foreign substances, etc. Rather than being used by an unfamiliar exterior wall painter, not only can the cap be lighter and easier to attach and detach, but it should be able to handle as many different types of caps as possible for overflow pipes of different outer diameters. Is desirable.

  In addition, since the structure of the cap itself can withstand the aesthetics of the building, and the hard vinyl chloride VP pipe that is the mainstream of plastic overflow pipes does not necessarily have sufficient weather resistance. There is a problem that it is necessary to adopt a mounting method so that the overflow pipe is not exposed to sunlight, and the inventors of the present application have intensively studied to solve such a problem, and as a result, the present invention has been completed. .

  The plastic cap for an overflow pipe of the present invention is a plastic cap applicable to a plurality of types of plastic overflow pipes having different outer diameter reference dimensions, and an elastic deformation stress between each of the plurality of types of overflow pipes. And / or a plurality of fitting portions that are detachably fitted to the overflow pipe using surface contact frictional force.

  On the other hand, the plastic cap mounting method of the present invention is for filling the gap between the overflow pipe and the overflow pipe and the outer wall with the plastic cap attached to the plastic overflow pipe protruding outward from the outer wall. The sealing agent is arranged to be covered with the plastic cap so as not to be seen from the outside.

  According to such a cap of the present invention, the entire cap is made of a plastic that is lighter than metal, and the fitting portion uses elastic deformation stress and / or surface contact frictional force with the overflow pipe. Since it is easily fitted to the overflow pipe, it can be easily and reliably attached to the overflow pipe even if an unfamiliar exterior wall painter contracts it.

  In addition, according to the cap of the present invention, the elastic pipe is detachably fitted to the overflow pipe using elastic deformation stress and / or surface contact frictional force between each of a plurality of types of plastic overflow pipes having different outer diameter reference dimensions. Since a plurality of fitting portions to be worn are provided, it is possible to cope with various types of overflow pipes having different outer diameters with a small number of types of caps.

  In the plastic cap for the overflow pipe of the present invention, the plastic overflow pipe has two types of outer diameter reference dimensions of amm and bmm (b> a), and the fitting portion is Base inner diameters (mm) ranging from 0.98a (ie 0.98 × a) to 1.00a (ie 1.00 × a) and 1.00a to 1.02a (ie 1) arranged concentrically with each other. .02 × a) tapered inner fitting with a tip inner diameter (mm) in the range 0.98b (ie 0.98 × b) to 1.00b (ie 1.00 × b) And a tapered outer fitting portion having a tip inner diameter (mm) in the range of 1.00b to 1.02b (that is, 1.02 × b). If it does in this way, an outer fitting part and an inner fitting part will be provided in two kinds of plastic overflow pipes with an outside diameter standard dimension of amm and bmm (b> a), respectively, between the overflow pipes. Since the elastic deformation stress and / or surface contact friction force of the outer fitting portion can be detachably attached, and the outer fitting portion and the inner fitting portion are positioned concentrically with each other. Caps that can handle various types of overflow pipes can be made compact.

  In the overflow pipe plastic cap of the present invention, the plastic overflow pipe may be a hard vinyl chloride VP pipe having a thickness in the range of 2.0 mm to 18.0 mm. In this way, since the cap of the present invention which is inexpensive because it is made of plastic can be applied to a relatively inexpensive and frequently used VP pipe, the overflow structure can be configured at low cost.

  On the other hand, according to the method of attaching the plastic cap of the present invention, the sealing for filling the gap between the overflow pipe and the overflow pipe and the outer wall with the plastic cap attached to the plastic overflow pipe protruding outward from the outer wall. Since the agent is covered with a plastic cap so that it cannot be seen from the outside, the plastic overflow tube can be prevented from being exposed to sunlight, and the exterior of the sealing agent for filling the gap between the overflow tube and the outer wall can be prevented. It is possible to prevent the exposure to and maintain the beauty of the building.

  In the plastic cap mounting method of the present invention, the plastic cap has an umbrella portion on the outside, and the inner fitting portion and the outer fitting portion are at least as long as the sealing agent is applied. You may retract from the free end of the part. In this way, with the plastic cap attached to the plastic overflow pipe protruding outward from the outer wall, the overflow pipe and the sealing agent for filling the gap between the overflow pipe and the outer wall can be seen from the outside by the umbrella portion. Can be covered so that there is no.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 is a rear view showing an embodiment of the plastic cap for an overflow pipe according to the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, showing the cap of the embodiment, and FIG. Fig. 4 is a front view showing the cap of the embodiment, and Fig. 4 shows a method of attaching the cap to the overflow pipe as an embodiment of the method of attaching the plastic cap of the present invention using the cap of the embodiment. FIG. 5 is a sectional view showing a state in which the cap is attached to the overflow pipe by the plastic cap attaching method of the embodiment.

  The plastic cap for an overflow pipe of this embodiment indicated by reference numeral 8 in the figure has a disc-shaped front portion 8a and a truncated cone-shaped umbrella portion 8b integrally connected to the periphery of the front portion 8a. It has a trapezoidal cross-sectional shape, and a large number of radially arranged through holes 8c are formed in the front surface portion 8a.

  Further, the cap 8 of this embodiment is adapted to be fitted to the cylindrical inner fitting portion 8d and the outer fitting portion so as to be compatible with the two types of outer diameter overflow pipes 1 and integrally connected to the rear surface of the front portion 8a. The inner fitting portion 8d and the outer fitting portion 8e are located on the same axis as the front portion 8a, and are concentrically located with each other and the front portion 8a. .

  Here, the inner peripheral surfaces of the inner fitting portion 8d and the outer fitting portion 8e each have a tapered shape (truncated conical shape) in which the distal end portion has a slightly larger diameter than the base portion. It is easy to attach to the tube 1. Further, in order to prevent the cap 8 of this embodiment from being easily removed from the overflow pipe 1, the base part of each of the inner fitting part 8d and the outer fitting part 8e connected to the front face 8a is formed by the overflow pipe 1. At the stage where the base portion is inserted and attached, both the base portion and the end portion 1a of the overflow pipe 1 are slightly elastically deformed in the radial direction.

  Specifically, the plastic overflow pipe 1 is, for example, a hard vinyl chloride VP pipe having a thickness in the range of 2.0 mm to 18.0 mm, and the outer diameter reference dimensions are amm and bmm (b> a 2), the cap 8 of this embodiment has a base inner diameter (mm) in the range of 0.98a to 1.00a as shown in FIG. And the outer fitting portion 8e has a base inner diameter (mm) in the range of 0.98b to 1.00b and a 1.00b to 1.02a. The dimensions are set so as to have a tip inner diameter (mm) in the range of 02b.

  Further, in the cap 8 of this embodiment, the front end portions of the inner fitting portion 8d and the outer fitting portion 8e are usually the overflow pipe 1 and the outer wall rather than the free end portion (rear end portion) of the umbrella portion 8b. The inner fitting portion 8d and the outer fitting portion 8e set the length dimension so as to retract at least the application length of the sealing agent 7 applied between them (the length in the axial direction of the overflow pipe 1). Has been.

  The material of the cap 8 in this embodiment is preferably a thermoplastic plastic in consideration of productivity and flexibility, and the weather resistance is preferably at least equal to or higher than that of a hard vinyl chloride resin. However, if it is lower than that, a paint having good weather resistance such as acrylic urethane may be applied to the surface. Examples of the material of the cap 8 include ABS, AMS, PC, PMMA, PVC, AS, and polyurethane.

  When the cap 8 of this embodiment is attached to the end portion 1a of the plastic overflow pipe 1 protruding outward from the outer wall 2, as shown in FIG. 4, for example, in the illustrated example, the inner periphery of the inner fitting portion 8d The surface is fitted to the outer peripheral surface of the end portion 1a of the overflow pipe 1, and the cap 8 is pushed so that the end portion 1a of the overflow pipe 1 is fitted to the base portion of the inner fitting portion 8d as shown in FIG.

  As a result, as shown in FIG. 5, with the cap 8 of this embodiment attached to the end 1a of the overflow pipe 1, the free end of the umbrella 8b contacts the outer wall 2 and the end of the overflow pipe 1 is reached. 1a and the sealing agent 7 for filling the space between the overflow pipe 1 and the outer wall 2 are arranged so as to be invisible from the outside by the umbrella portion 8b of the cap 8.

  According to the cap 8 of this embodiment, the entire cap 8 is made of a lighter plastic than metal, and the inner fitting portion 8d and the outer fitting portion 8e are elastically deformed between the overflow pipe 1 and elastic deformation stress. In addition, since it is simply fitted to the overflow pipe 1 using the surface contact frictional force, it can be easily and reliably attached to the overflow pipe 1 even if an unfamiliar exterior wall painter contracts.

  Moreover, according to the cap 8 of this embodiment, the overflow pipe 1 is utilized by utilizing elastic deformation stress and / or surface contact frictional force between each of two types of plastic overflow pipes 1 having different outer diameter reference dimensions. Since the inner fitting portion 8d and the outer fitting portion 8e that are detachably fitted to each other are provided, a small number of types of caps 8 can be used for overflow pipes having various different outer diameters. be able to.

  Furthermore, according to the cap 8 of this embodiment, in the case of applying to two types of plastic overflow pipes 1 whose outer diameter reference dimensions are amm and bmm (b> a), concentric circles are used as fitting parts. A tapered inner fitting 8d having a base inner diameter (mm) in the range of 0.98a to 1.00a and a tip inner diameter (mm) in the range of 1.00a to 1.02a, A tapered outer fitting portion 8e having a base inner diameter (mm) in the range of 0.98b to 1.00b and a tip inner diameter (mm) in the range of 1.00b to 1.02b. The fitting part 8d and the outer fitting part 8e are elastically deformed between the overflow pipe 1 and two types of plastic overflow pipes 1 having outer diameter reference dimensions of amm and bmm (b> a), respectively. Stress and / or It can be detachably fitted using the surface contact friction force, and the inner fitting portion 8d and the outer fitting portion 8e are positioned concentrically with each other. The compatible cap 8 can be configured compactly.

  Furthermore, according to the cap 8 of this embodiment, the plastic overflow pipe 1 may be a hard vinyl chloride VP pipe having a thickness in the range of 2.0 mm to 18.0 mm, so that it is relatively inexpensive. Since the cap 8 of this embodiment, which is made of plastic and is inexpensive, can be applied to a widely used VP pipe, the overflow structure can be constructed at a low cost.

  On the other hand, according to the method of attaching the plastic cap of this embodiment, the overflow pipe 1 and its overflow pipe 1 are mounted with the plastic cap 8 of the above embodiment attached to the plastic overflow pipe 1 protruding outward from the outer wall 2. Since the sealing agent 7 for filling the gap between the outer wall 2 and the outer wall 2 is covered with a plastic cap 8 so as not to be seen from the outside, the plastic overflow pipe 1 can be prevented from being deteriorated by sunlight and overflow. The exterior of the sealing agent 7 for filling the gap between the pipe 1 and the outer wall 2 can be prevented and the aesthetics of the building can be maintained.

  According to the method of attaching the plastic cap of this embodiment, the plastic cap 8 has the umbrella portion 8b on the outside, and the inner fitting portion 8d and the outer fitting portion 8e are at least the application length of the sealing agent 7. Since it is retracted from the free end of the umbrella part 8b, the overflow pipe 1 and the gap between the overflow pipe 1 and the outer wall 2 are filled with the cap 8 attached to the plastic overflow pipe 1 protruding outward from the outer wall 2. Therefore, the sealing agent 7 can be covered with the umbrella portion 8b so as not to be seen from the outside.

  Although the present invention has been described based on the illustrated example, the present invention is not limited to the above-described example, and can be appropriately changed within the scope of the claims of the utility model registration. It may be more than one.

  Thus, according to the plastic cap of the present invention, the entire cap is made of plastic that is lighter than metal, and the fitting portion utilizes elastic deformation stress and / or surface contact frictional force between the overflow pipe and the fitting. Since it is simply fitted to the overflow pipe, it can be easily and reliably attached to the overflow pipe even if an unfamiliar exterior wall painter contracts it.

  In addition, according to the cap of the present invention, the elastic pipe is detachably fitted to the overflow pipe using elastic deformation stress and / or surface contact frictional force between each of a plurality of types of plastic overflow pipes having different outer diameter reference dimensions. Since a plurality of fitting portions to be worn are provided, it is possible to cope with various types of overflow pipes having different outer diameters with a small number of types of caps.

  According to the method of attaching the plastic cap of the present invention, the plastic overflow pipe can be prevented from being deteriorated by sunlight, and the sealing agent for filling the gap between the overflow pipe and the outer wall is exposed to the outside. Can be maintained to maintain the beauty of the building.

It is a rear view which shows one Example of the plastic caps for overflow pipes of this invention. It is sectional drawing which follows the AA line of FIG. 1 which shows the cap of the said Example. It is a front view which shows the cap of the said Example. It is explanatory drawing which shows the attachment method of the cap to an overflow pipe | tube as one Example of the attachment method of the plastic cap of this invention using the cap of the said Example in a cross section. It is sectional drawing which shows the state which attached the cap to the overflow pipe | tube with the attachment method of the plastic cap of the said Example. It is a side view which shows an example of the method of covering the edge part of the conventional overflow pipe | tube. It is a side view which shows another example of the method of covering the edge part of the conventional overflow pipe | tube. It is sectional drawing which shows a further example of the method of covering the edge part of the conventional overflow pipe | tube.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Overflow pipe 1a End part 2 Outer wall 3 Elbow 4 Plastic cap 5 Screw 6 Aluminum die-cast cover 6a Leaf spring 7 Sealing agent 8 Plastic cap 8a Front part 8b Umbrella part 8c Through hole 8d Inner fitting part 8e Outer fitting Part

Claims (5)

A plastic cap applicable to a plurality of types of plastic overflow pipes having different outer diameter reference dimensions,
A plurality of fitting portions detachably fitted to the overflow pipe using elastic deformation stress and / or surface contact frictional force between each of the plurality of types of overflow pipes; Plastic cap for overflow tube. The plastic overflow pipe has two types of outer diameter reference dimensions of amm and bmm (b> a),
The fitting portions are arranged concentrically with each other,
A tapered inner fitting with a base inner diameter (mm) in the range of 0.98a to 1.00a and a tip inner diameter (mm) in the range of 1.00a to 1.02a;
A tapered outer fitting having a base inner diameter (mm) in the range of 0.98b to 1.00b and a tip inner diameter (mm) in the range of 1.00b to 1.02b;
The plastic cap for an overflow pipe according to claim 1, comprising: 3. The plastic cap for an overflow pipe according to claim 1, wherein the plastic overflow pipe is a hard vinyl chloride VP pipe having a wall thickness in the range of 2.0 mm to 18.0 mm. In the state where the plastic cap is attached to the plastic overflow pipe protruding outward from the outer wall, the sealing pipe for filling the gap between the overflow pipe and the overflow pipe and the outer wall is not visible from the outside by the plastic cap. The method for attaching a plastic cap according to any one of claims 1 to 3, wherein the plastic cap is disposed so as to be covered with water. The plastic cap has an umbrella on the outside,
5. The method of attaching a plastic cap according to claim 4, wherein the inner fitting portion and the outer fitting portion are retracted from a free end portion of the umbrella portion at least by an application length of the sealing agent. .

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