JP3020109U - Dust-proof net for drainage - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] A dust drain mesh for drainage drains is attached to the drainage drains on rooftops or the drainage drains for gutters to remove small foreign matters and debris and prevent intrusion. Offer. [Structure] A dust-proof net body 1 made of a metal net that bulges upward so as to cover the opening at the upper end of the drain 10, a reinforcing ring 2 attached to the lower end peripheral edge of the dust-proof net body, and the dust-proof net body on the inner surface. A reinforcing bone rod 3 made of metal extending from several points in the circumferential direction of the reinforcement ring so as to be supported from the side, and the lower end of this bone rod is extended vertically downward so as to have a predetermined gap on the lower surface of the reinforcement ring, The lower end of the vertical portion 4a is further bent horizontally inward so that the portion following the horizontal portion 4d extends downward so as to be pushed into the drain and is elastically engaged with the inner wall surface of the drain. It is composed of a mounting support rod 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a drainage dustproof net which is attached to a drainage drain such as a rooftop or a drainage drain for a gutter to remove small foreign matters and debris and prevent intrusion.

[0002]

[Prior art]

 In the conventional dust-proof mesh for drainage drain, a debris removal part is formed on the cap by a metal mesh (net) so as to cover the opening at the upper end of the drainage, and a reinforcing ring around the lower end edge is attached to the inner wall surface of the drainage drain. Those which are provided with metal support legs so as to be combined are generally known from the past, as disclosed in Japanese Utility Model Publication No. 63-173424 and Japanese Utility Model Publication No. 6-37426.

[0003]

[Problems to be solved by the device]

 As shown in FIG. 3, the above-mentioned conventional dustproof net for a drain is composed of a dustproof net 41, a reinforcing ring 42, and a support leg 44 attached to the reinforcing ring. Since it has a curved shape, it is easily deformed by pressing force, and the support leg is hung directly from the reinforcing ring. And the reinforcing ring 42 contact each other to completely close the periphery of the flange. Therefore, there was a problem that relatively large refuse that could be allowed to flow into the drain drainage port was caught in the dust-proof net, causing clogging and an unexpected situation.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to increase the strength of the dust-proof netting body against the pressure deformation and to prevent the dust inner meshing surface from being damaged. By increasing the engaging force of the support legs and by making a space on the bottom surface of the reinforcing ring of the dust-proof net, it is possible to allow even relatively large dust to flow in, but to prevent clogging, and to make it easier. The purpose of the present invention is to provide a dustproof net for drainage that can be implemented at a low cost.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the drainage drain dustproof net in the present invention is a drainage drain dustproof mesh attached to the drain, and is a metal bulged upward so as to cover the opening 11 at the upper end of the drain 10. A dust-proof mesh body 1 made of a mesh, a reinforcing ring 2 attached to the lower edge of the dust-proof mesh body, and a reinforcing ring 2 extending from several points in the circumferential direction so as to support the dust-proof mesh body 1 from the inner surface side. A reinforcing rod 3 made of metal and a lower end of the rod 3 are extended vertically downward so as to have a predetermined space a on the lower surface of the reinforcing ring, and the lower end of the vertical portion 4a is further bent horizontally inward. Then, a portion following the horizontal portion 4b is extended downward so as to be inserted into the drain, and is elastically engaged with the inner peripheral wall surface of the drain.

[0006]

【Example】

 Examples will be described with reference to the drawings.

The dustproof net body 1 is formed by forming a metal net into a cap shape so as to cover the opening 11 at the upper end of the drain 10. The metal net may be formed in a hexagonal shape by knitting in a hexagonal shape, or may be plain-woven into a lattice shape, or may be in a rhombic shape or the like.

The reinforcing ring 2 is integrally attached to the lower end peripheral edge of the dustproof net body 1. The reinforcing ring 2 is formed by forming a round wire or a flat wire into a ring shape and fixing it by welding or caulking. Further, a metal strip is formed in a U shape in the lateral direction and is fixed to the lower end periphery by caulking or welding.

The reinforcing bone rod 3 and the support leg rod 4, which are attached to the inner surface of the dustproof net body 1 so as to be attached and supported, are integrally formed by bending a single wire. That is, assuming that the lower end of the bone rod 3 is extended, the vertical portion 4a is formed by extending downwardly from the portion of the lower end of the bone rod located at the reinforcing ring by a length corresponding to the space a. The lower end is bent horizontally inward to form a horizontal portion 4b, and the portion following the horizontal portion 4b extends downward to form the support leg rod 4. A part of the leg rod 4 to be inserted into the drain 10 is formed in a V shape so that the bent portion 4c is brought into pressure contact with a peripheral wall surface in the drain 10 by a holding elastic force. Such reinforcing bone rods 3 and supporting leg rods 4 are provided at equal intervals on the inner surface of the dust-proof mesh body 1, for example, as shown in FIGS. The pair of members are integrally formed.

[0010]

[Action]

 When the support leg rod 4 is inserted into the drain opening 11 in order to set the dustproof mesh 1 to the drainage drain, the opening is closed by the mesh 1 as shown in FIG. The existence of the vertical portion 4a and the horizontal portion 4b below the reinforcing ring forms a space a between the lower surface of the reinforcing ring 2 and the upper surface of the flange 12 above the opening 11. Since the size of the void a is determined by the length of the vertical portion 4a, a desired void can be obtained if it can be appropriately selected in advance. When set in the proper position, the supporting leg rod 4 is pressed and inwardly pressed and locked to the inner wall of the drain to be fixedly fixed.

When the rainwater and the like containing dust is discharged to the drain 10, the dust is filtered by the dust-proof mesh body 1, so that the dust adheres to the surface of the mesh body 1 and is removed from the running water. It

Dust that is larger than the mesh of the mesh body 1 and is smaller than the void a flows into the drain opening 11 through the void a together with running water. Therefore, dust larger than the mesh is not attached to the surface of the dust-proof mesh body 1, so clogging is prevented. Also, pebbles and the like having a large specific gravity flow at the bottom and are removed from the void a.

[0013]

[Effect of device]

 Since the present invention is configured as described above, the support of the leg rod with respect to the inner wall of the drain outlet can be set at a fixed position by the elasticity of the leg rod itself, and the gap a on the lower surface of the reinforcing ring is larger than the mesh, but the drain is larger. Waste that can be discharged into the drain can be discharged into the drain from the space a, so that there is an effect that drainage to the drain can be smoothed and clogging of the dustproof net can be prevented. Further, in the present invention, since the net body 1 is supported from the inside by the reinforcing bone rod 3 integrally formed with the leg rod 4 on the dustproof net body 1 to increase the strength against external pressure, a large water pressure or a strong foreign substance It is highly safe against shocks and can improve durability. Moreover, the structure is simple and advantageous in terms of cost.

[Brief description of drawings]

FIG. 1 is an overall perspective view of the dustproof net of the present invention.

FIG. 2 is a front view showing an embodiment of the dustproof mesh for drainage according to the present invention, the left half of which is shown in section.

FIG. 3 is a front view of a conventional dustproof mesh for drainage.

[Explanation of symbols]

 1 Dust-proof mesh body 2 Reinforcement ring 3 Reinforcement bone rod 4 Support leg rod 4a Vertical part 4d Horizontal part a Void 10 Drain 11 Drainage port

Claims (1)

[Scope of utility model registration request] 1. A dustproof net for a drainage drain attached to a drainage drain, the dustproof net body 1 comprising a metal net bulging upward so as to cover an opening 11 at an upper end of the drain 10, and the dustproof net. A reinforcing ring 2 attached to the lower edge of the net,
A metal reinforcing bone rod 3 extending from several points in the circumferential direction of the reinforcing ring 2 so as to support the dust-proof net body 1 from the inner side, and a lower end of the bone rod 3 has a predetermined space a on the lower surface of the reinforcing ring. So that the lower end of the vertical portion 4a is further bent inward in the horizontal direction, and the portion following the horizontal portion 4b is extended downward so as to be inserted into the drain. Mounting support rod 4 for elastically engaging
Dust-proof net for drainage drain, which is characterized by