JPH0710167U - Free drain for eaves gutter - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a free drain for eaves trough that does not allow rainwater to flow down the inner cylinder smoothly even when there is a large amount of rainwater in the eaves trough. . [Structure] An inner cylinder 11 having a flange 112 on the outer periphery of a cylinder having an external thread 111 on the outer peripheral surface, and a flange 122 on the outer periphery of the upper edge of a cylinder having an internal thread 121 on the inner peripheral surface. In the universal drain 1 in which the outer cylinder 12 is provided and the male thread 111 of the inner cylinder 11 can be screwed into the female thread 121 of the outer cylinder 12, the protrusion 115 is provided on the inner peripheral surface of the inner cylinder 11. Is provided obliquely with respect to the circumferential direction of the inner peripheral surface.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a free drain for eaves gutters.

[0002]

[Prior art]

 Conventionally, for example, as described in Japanese Utility Model Laid-Open No. 59-175527, an inner cylinder having a flange on the outer periphery of a cylinder having a male screw on the outer peripheral surface and a female screw on the inner peripheral surface are provided. An outer cylinder with a flange is provided on the outer circumference of the upper edge of the cylinder.The inner cylinder is inserted into the mounting hole provided in the eaves gutter, and the female screw of the outer cylinder is screwed into the male screw of the inner cylinder. A free drain for an eaves gutter that is designed to be attached to a gutter is known.

[0003]

[Problems to be solved by the device]

 However, in the conventional free drain for eaves gutter as described in Japanese Utility Model Laid-Open No. 59-175527, when the amount of rainwater in the eaves gutter is large, the rainwater in the inner cylinder becomes a turbulent flow. There is a possibility that rainwater may overflow into the eaves gutter due to bubbles that do not flow smoothly.

The present invention has been made by paying attention to the problems in the conventional free drain for an eaves gutter, and the purpose thereof is to solve the problems in the conventional free drain for an eaves gutter. The solution is to provide a free drain for the eaves trough that does not cause rainwater to flow down the inner cylinder smoothly even when the eaves trough has a large amount of rainwater.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the free drain for the eaves gutter of the present invention includes an inner cylinder having a flange on the outer periphery of a cylinder having a male thread on the outer peripheral surface and a cylinder having a female thread on the inner peripheral surface. In a self-contained drain in which an outer cylinder with a flange is provided on the outer circumference of the upper edge, and a male screw of the inner cylinder can be screwed into the female screw of the outer cylinder, a ridge is formed on the inner peripheral surface of the inner cylinder. It is characterized in that it is provided obliquely with respect to the circumferential direction of the inner peripheral surface of the cylinder, and such a configuration solves the above-mentioned problems.

In the present invention, the material for the free drain for the eaves gutter is not particularly limited, and examples thereof include synthetic resins such as hard vinyl chloride resin, polyethylene, polypropylene, and polycarbonate, and polyphenylene sulfide. Such engineering plastics or metals such as iron, stainless steel, copper, and aluminum may be used alone, or a coating layer of hard vinyl chloride resin is provided on both sides of a metal core material such as iron. Etc., these materials may be appropriately combined and used. The core material may be a metal plate or a mesh, and a fiber-reinforced composite sheet or the like can be used in addition to the metal.

The fiber-reinforced composite sheet may be used for roving continuous fibers such as glass fiber, carbon fiber, alumina fiber, aramid fiber, etc. alone or in combination thereof, processed products such as non-woven fabric, woven fabric, mat, net, etc. A resin impregnated and molded can be used, and a multilayer structure in which these are combined can be used.

[0008]

[Action]

 In the free drain for the eaves trough of the present invention, since the protrusions are provided on the inner peripheral surface of the inner cylinder obliquely with respect to the circumferential direction of the inner cylinder, the rainwater flowing down inside the inner cylinder becomes spiral. Occurs, and an air vent is created in the center of the vortex, which suppresses the generation of bubbles and allows the air to flow down smoothly.

[0009]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing an attached state of an example of a free drain for an eaves gutter of the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG. In FIGS. 1 and 2, reference numeral 1 denotes a free drain for the eaves trough of the present invention, which is made of a hard vinyl chloride resin, and the free drain 1 for the eaves trough of the present invention is provided with an inner cylinder 11 and an outer cylinder 12.

A male screw 111 is provided on the outer peripheral surface of the inner cylinder 11, and a flange 112 is provided on the outer periphery of the upper edge thereof. A dust-preventing column 113 is projectingly provided on the periphery of the upper opening of the inner cylinder 11, and a dust-preventing ring 114 is provided at the upper end of the column 113. On the inner peripheral surface of the inner cylinder 11, ridges 115, 115, ..., which are oblique to the circumferential direction, are provided at equal intervals.

A female screw 121 that is screwed into the male screw 111 of the inner cylinder 11 is provided on the inner peripheral surface of the outer cylinder 12, and a flange 122 is provided on the outer periphery of the upper edge thereof, and the outer peripheral surface of the outer cylinder 12 is not shown. A connection groove 123 such as a vertical gutter is provided.

[Operation of the Embodiment] Next, the operation of the free drain for the eaves gutter of the present invention shown in FIGS. Reference numeral 2 is an eaves trough made of hard vinyl chloride resin, the inner cylinder 11 of the universal drain 1 for eaves trough according to the present invention is inserted into the mounting hole 21 of the eaves trough 2, and the male thread 111 of the inner cylinder 11 is the female thread 121 of the outer cylinder 12. The free drain 1 for the eaves gutter of the present invention is attached to the eaves gutter 2 by screwing.

In such a state, rainwater (not shown) in the eaves gutter 2 flows down in the inner cylinder 11. Since the slanted protrusions 115 are provided on the inner surface of the inner cylinder 11, rainwater flows down in a spiral shape and produces a vortex, and an air escape path is created in the center of the vortex, which suppresses the occurrence of bubbles and prevents rainwater. Flows smoothly.

Although the embodiment of the present invention has been described above with reference to the drawings, the specific configuration of the present invention is not limited to this embodiment, and design changes and the like within a range not departing from the gist of the present invention. Even if it exists, it is included in the present invention. For example, in the illustrated embodiment, four ridges are provided on the inner peripheral surface of the inner cylinder 11, but one, two, or three ridges may be provided. Alternatively, five or more articles may be provided.

[0015]

[Effect of device]

 In the free drain for the eaves trough of the present invention, rainwater flowing down in the inner cylinder forms a spiral and a vortex is generated, and an air escape passage is created in the center of the vortex to suppress the generation of bubbles and flow down smoothly. Therefore, there is no risk of rainwater overflowing from the eaves gutter.

[Brief description of drawings]

FIG. 1 is a plan view showing a mounting state of an example of a free drain for an eaves gutter of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

[Explanation of symbols]

 1 Drain for Eaves Gutter 11 Internal Cylinder 11 Inner Cylinder 111 Male Thread 112 Flange 113 Dust Avoiding Column 114 Dust Avoiding Ring 115 Protrusion 12 Outer Cylinder 121 Female Thread 122 Flange 123 Groove 2 Eaves Gutter

Claims (1)

[Scope of utility model registration request] 1. An inner cylinder having a flange on the outer periphery of a cylinder having an external thread on the outer peripheral surface, and an outer cylinder having a flange on the outer periphery of the upper edge of a cylinder having an internal thread on the inner peripheral surface. In the free drain, in which the male thread of the inner cylinder can be screwed into the female thread of the outer cylinder, the protrusion is slanted with respect to the circumferential direction of the inner circumferential surface of the inner cylinder in the inner circumferential surface of the inner cylinder. A free drain for eaves gutters, which is characterized in that it is installed in.