JP2010053586A - Dust prevention screen for drainage drain - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dust prevention screen for a drainage drain, which can be attached to even a drain with a lattice and which can withstand extended periods of use. <P>SOLUTION: The dust prevention screen for the drainage drain is provided with a net body 1, a ring 5, and support legs 10, 10. The net body 1 is formed by being bulged in a state to cover the top-end opening 53 of the drain A, and the ring 5 fixed on the peripheral edge of the lower-end opening of the net body 1 is brought into contact with a flange 61 provided to the top-end opening 53 of the drain A. The support legs 10, 10 are arranged in the inside of the net body 1. The net body 1 is formed is a truncated-cone shape, and the support legs 10, 10 are constituted of a stationary part 10a, an extended part 10b, and a bending part 10c. The stationary part 10a is fixed to the inside of the top of the net body 1. The extended part 10b, which is bent from the end of the stationary part 10a so that it is separated from the inner side of the net body 1, is extended to a plurality of positions of the ring 5 in the peripheral direction. The bending part 10c is formed by being bent from the end of the extended part 10b so that it is brought into pressure contact with the internal surface of the drain A. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a dustproof net for drainage drainage for preventing foreign matter from entering a drain attached to a rain gutter of a building.

  This type of conventional dust-proof net for drainage drainage, for example, is fixed to the dome-shaped bulge so as to cover the upper end opening of the drain, and to the periphery of the lower end opening of the net. A ring that abuts the flange formed in the upper end opening, and a support that is extended so that the central portion thereof is fixed along the radial direction inside the mesh body and both end portions thereof are pressed against the inner surface of the drain. The thing provided with the leg is known (patent document 1). The both ends of the support leg have a vertical portion extending perpendicularly to the flange and an inward radial direction from the end of the vertical portion so that a gap is formed between the ring and the drain flange. And a bent portion having a top portion that is bent radially outward from the end of the horizontal portion toward the inner surface of the drain so as to be in pressure contact with the inner surface of the drain. .

  A vertical portion of the support leg forms a gap between the ring of the dustproof net for drainage drain and the flange of the drain, and the gap prevents clogging of the net body by relatively large garbage, Inflow is allowed into the drain.

  Further, a net formed to bulge so as to cover the upper end opening of the drain, a ring fixed to the periphery of the lower end opening of the net, and abutting against a flange formed in the upper end opening of the drain; One having one end fixed to the upper surface of the ring along the radial direction and the other end provided with a support leg extending downward from the inside of the ring is known (Patent Document 2). The support leg is directed from the end of the horizontal portion toward the inner surface of the drain so as to come into pressure contact with the inner surface of the drain and the horizontal portion extending radially inward from one end fixed to the upper surface of the ring. And a bent portion having a top portion formed by bending outward in the radial direction.

And it is indicated that a support leg can be inserted between the grid | lattices of a drain with a grid | lattice, and the dustproof net for drainage drains can also be mounted | worn with a drain with a grid | lattice.
Registered Utility Model No. 3020109 Japanese Utility Model Publication No. 6-37426

  However, in the former dust drainage net for drainage drain, the central part of the support leg is fixed along the inner side of the dome-shaped net body, so that it extends from the central part toward the inner surface side of the drain. There are cases where there is no degree of freedom at both ends, and the support legs cannot be inserted between the grids of the drain with grid. That is, there is an inconvenience that the drain that can be mounted is limited.

  On the other hand, the latter dust drainage net for drainage drains is configured to accommodate drains with grids, but when the drainage drain dust netting is attached to the drain, the top of the other end of the support leg is the inner surface of the drain. Therefore, a large load is always applied to one end fixed to the upper surface of the ring, and there is a concern about long-term use.

  Then, this invention makes it a subject to provide the dust net for drainage drains which can be mounted | worn with a drain with a grid | lattice and can endure long-term use in view of the said problem.

  In order to solve the above-mentioned problems, a dust-proof net for drainage drain according to the present invention includes a net body 1 formed to bulge so as to cover the upper end opening 53 of the drain A, and a lower end opening of the net body 1. In a dust-proof net for drainage drains comprising a ring 5 fixed to the periphery and abutting against a flange 61 provided in the upper end opening 53 of the drain A, and support legs 10, 10 disposed inside the net body 1. The mesh body 1 is formed in a truncated cone shape, and the support legs 10 and 10 are spaced apart from the fixing portion 10a fixed to the inner upper portion of the mesh body 1 and the inner side portion of the mesh body 1. Bending from the end of the fixed portion 10a and extending from the end of the extending portion 10b so as to be in pressure contact with the extended portion 10b extending to several places in the circumferential direction of the ring 5 and the inner surface of the drain A It is characterized by comprising the formed bent portion 10c.

  In this case, since the fixing portion 10a of the support legs 10 and 10 is fixed to the inner upper portion of the net body 1, the strength is increased. The inside upper part of the net body 1 mentioned here includes all of the inside of the circular part at the top of the net body 1, the upper part of the inside side part, and the range from the inside to the inside side part of the circular part. In addition, the extending portions 10b that are bent from the fixing portions 10a of the support legs 10 and 10 that are located at the upper inner side of the mesh body 1 extend to several places in the circumferential direction of the ring 5 while being separated from the inner side portions of the mesh body 1. Therefore, the degree of freedom of the extending portion 10b and the bent portion 10c of the support legs 10 and 10 is increased in proportion to the height of the net body 1, for example, between different types of latticed drains with lattices. Thus, the support legs 10 can be easily inserted.

  Moreover, according to this invention, in the extension part 10b of the said support legs 10 and 10, the structure which forms the curved part 10e which curves in the radial direction in the bending part bent from the edge part of the fixing | fixed part 10a is formed. It can also be adopted.

  In this case, in the extended portion 10b of the support legs 10 and 10, the bent portion 10e that is bent from the end of the fixed portion 10a is formed with a curved portion 10e that curves in the radially outward direction. Thus, the strength of the ten extending portions 10b and the pressure contact force of the bent portion 10c are increased, and the drain A can be maintained in a stable state for a long period of time.

  As described above, in the dust drainage net for drainage drainage according to the present invention, the fixing portion of the support leg is fixed to the inner upper part of the truncated cone-shaped net, so that the strength of the fixing portion is increased and the bending of the support leg is increased. Even if the portion is in pressure contact with the inner surface of the drain, it can sufficiently withstand long-term use. In addition, since the extending portion of the support leg is extended in a state of being separated from the inner side portion of the net body, the degree of freedom of the extending portion and the bent portion of the supporting leg is increased, and the lattices of drains with different types of lattices are provided. The drain that can be easily inserted, that is, the drain that can be mounted is less limited.

  Hereinafter, a dustproof net for drainage drain according to an embodiment of the present invention will be described with reference to the accompanying drawings.

  First, before explaining the dust screen for drainage drain according to the present embodiment, the structure of a ready-made drain with a grid to which the dust screen for drainage drain can be attached will be described with reference to FIGS. In addition, in this embodiment, although the drain to which the grid is not attached is not described, it goes without saying that the dust net for drainage drainage of the present invention can be attached to the drain to which the grid body is not attached. Yes.

  For example, as shown in FIGS. 6 (a) and 6 (b), a drain with a lattice that is used relatively frequently is a tubular body connecting portion 51 in which a straight pipe or a curved pipe is connected to the lower end opening, and the pipe. The grid connection portion 52 that is connected to the upper end portion of the body connection portion 51 and has an internal thread (not shown) formed on the inner peripheral surface, and the peripheral edge portion of the upper end opening 53 of the grid connection portion 52. A drain main body 50 having a flange 54 to be formed, a cylindrical male screw 60a to be screwed onto the female screw 53a of the grid connecting portion 52, a flange 61 formed on the outer peripheral surface of the upper end portion of the male screw 60a, A plurality of columns 62 erected on the inner peripheral edge of the flange 61 are fixed concentrically to the upper ends of the columns 62, and a drain hole 63 a having a smaller diameter than the upper end opening 53 of the drain body 50 is formed. And a grid body 60 having a funnel-shaped dustproof member 63 formed. There are things you are. Although the drain A with a lattice is not shown, there are three types of large, medium, and small types in which the outer diameter of the flange 54 of the drain main body 50 is designed to be 100 mm, 115 mm, and 130 mm.

  Next, as a type different from the drain with a lattice, as shown in FIGS. 7A and 7B, the upper end portion of each drain 62 'is connected to the upper end portion 53' of the drain main body 50 '. A small-diameter annular dustproof member 63 'is concentrically fixed to the drain B with a lattice, and as shown in FIGS. 8 (a) and 8 (b), is erected at equal intervals on the inner peripheral edge of the flange 610. .., And a grid drain C composed of a dome-like and grid-like grid member 70 fixed to the upper end of each of the posts 620,. 9 (a) and 9 (b), grids fixed to the upper ends of twelve struts 620 ′,... And each strut 620 ′,. There is a grid-equipped drain D composed of a grid member 70 'knitted into a shape. And the dust-proof nets a to d for drainage drain according to the present invention to be described later can be mounted on any of the drains A to D with a lattice described above. In addition, in the drain with a grid | lattice shown in FIGS. 7-9, description of the same or equivalent member as FIG. 6 is abbreviate | omitted, and only the different point is demonstrated.

  Next, the drainage drain dust nets A to E (the outer diameters of the rings are 80, 110, 130, 150, and 170 mm) that can be attached to the drains A to D with the grid will be described in order from the smallest size. First, as shown in FIGS. 1 (a) to 1 (d), a dust-proof net for drainage drains designed to have an outer diameter of the ring of 80 mm covers the upper end opening (outside of the grid) of the drain body. A swelled net body 1, a ring 5 fixed to the periphery of the lower end opening of the net body 1, and abutting a drain flange (lattice flange), and orthogonal to the inner upper part of the net body 1 And a pair of support legs 10, 10 arranged so as to do so.

  As shown in FIGS. 1C and 1D, the mesh body 1 is formed in a truncated cone shape, and the height of the inner side portion is set larger than the diameter of the inner upper portion. Specifically, as shown in FIG. 1 (a), a plurality of wire rods 1a,... Bent in a parabolic shape so as to increase in height in proportion to the size of the curvature, Are erected so as to cross each other at a predetermined interval. And the wire 1a with a large height and curvature is arrange | positioned as it goes to the center part of the net body 1, When the net body 1 is planarly viewed, as shown in FIG. It is organized.

  As shown in FIGS. 1A to 1D, the support leg 10 has a fixed portion 10a whose central portion is fixed to the inner upper portion of the net body 1 along the diametrical direction, and FIG. As shown in (d), it is bent downward (substantially at right angles) from both end portions of the fixed portion 10a so as to be separated from the inner side portion of the net body 1, and is extended to several places in the circumferential direction of the ring 5. The extending portion 10b and the extending portions so as to be in pressure contact with the inner surfaces of the grid-attached drains A to D (the inner surfaces of the male threads 60a, 60a ', 600a, and 600a' of the lattice bodies 60, 60 ', 600, and 600'). It is comprised by the bending part 10c which has the top part 10d formed by bending in the radial direction from the lower end part of 10b. In addition, the fixing | fixed part 10a of the support leg 10 shown in FIG.1 (c) is wider (near the inner side part of the net body 1) than the fixing | fixed part 10a of the support leg 10 shown in FIG.1 (d). The reason for this is to prevent the bent portions 10c of the support legs 10, 10 from interfering with each other when the support legs 10, 10 are inserted into the lattice body 60, that is, to prevent troubles during insertion. is there.

  And the dust-proof nets for drainage drains, d (see FIGS. 2 (a) to (d) and FIGS. 4 (a) to (d)) designed so that the outer diameter of the ring 5 is 110 mm and 150 mm are the above drainage drains. It is configured in substantially the same way as the dustproof net for water, except that the height of the inner side portion of the dustproof net for drainage drain of 80 mm is larger than the diameter of the inner upper part of the net body 1. However, the dust-proof nets for drainage drains of 110 mm and 150 mm are formed so that the height of the inner side part is larger than the diameter of the inner upper part of the net body 1, and the fixing part of the support leg 10 is corresponding to this. The length of 10a is large and the length of the extending part 10b is short.

  Next, the drainage drain dust screen C designed to have an outer diameter of the ring 5 of 130 mm is also configured in substantially the same manner as the drain drain dust screen A shown in FIG. ), The difference is that a curved portion 10e that is curved radially outward is formed at the end of the solid portion 10a of the support leg 10 located at the peripheral portion of the net body 1.

  Next, as shown in FIGS. 5 (a) to 5 (d), the dust drainage net for drainage drains designed to have an outer diameter of the ring of 170 mm, the outer diameter of the inner upper portion of the net body 1 is set to a height. The fixing portion 10a of the support leg 10 shown in FIG. 5C is designed to be approximately twice as large as the radial direction of the net body 1 from the inner upper portion of the net body 1 to the inner side portion. The fixing portion 10a of the support leg 10 shown in FIG. 5 (d) is fixed so as to be along the inner upper portion of the net body 1. And the extension parts 10b of the support legs 10, 10 are bent radially inwardly so as to be separated from the lower part of the inner side part of the net body 1, and are extended to several places in the circumferential direction of the ring 5. Thus, the configuration is different from the configuration of the dust-proof net a for drainage drain shown in FIG.

  Next, a description will be given of a mode in which the dust drain net for drainage drain (ring outer diameter is 110 mm) shown in FIG. 2 is attached to the drain A with a grid shown in FIG. First, in the drain A with a grid, the male screw 60a of the grid body 60 is screwed into the female thread of the grid body connection portion 52 of the drain body 50. And in the dust-proof net for drainage drains, the lattice body is such that the lower end portions (end portions of the bent portions 10c,...) Of the support legs 10 and 10 are positioned between the support columns 62,. The mesh body 1 is arranged directly above the 60.

  In the present embodiment, for convenience, the drain body 50 and the lattice body 60 are in a disassembled state, but the drain body 50 is usually attached to a rain gutter of a building with the lattice body 60 attached. It has been.

  Next, the bent portions 10c of the support legs 10, 10 are connected to the male screws 60a of the grid body 60 in a state where the lower ends of the support legs 10, 10 are in contact with the inner peripheral edge of the flange 61 of the grid body 60. When pushed into the inside, the support legs 10 and 10 are narrowed by the inclined portion from the lower end portion of the bent portion 10c,... To the top portion 10d,. This state is maintained while 10 is mounted on the lattice body 60. At this time, since the extended portions 10b of the support legs 10, 10 corresponding to the height of the net body 1 are separated from the inner side of the net body 1, the support legs 10, 10 are relatively easily constricted. I can For this reason, the support legs 10 and 10 can be pushed into the lattice body 60 with little effort. As the reaction force for compressing the support legs 10, the top portions 10 d of the support legs 10, 10 are pressed against the inner surface of the male screw 60 a.

  Subsequently, when the support legs 10, 10 are further pushed into the male screw 60a, the top portions 10d,. The mounting is completed by abutting the 60 flanges 61. At this time, the columns 62 of the lattice body 60 and the dustproof member 63 are located inside the net body 1. That is, the net body 1 covers the outside of the lattice body 60 (see FIG. 10).

  Next, a description will be given of a mode in which the dust drain net for drainage drain (ring outer diameter is 130 mm) shown in FIG. 3 is attached to the drain A with a grid shown in FIG. In addition, the magnitude | size of the drain A with a grating | lattice shall respond | correspond to the dust-proof net for drainage drain. In the same manner as described above, the lower ends of the support legs 10 and 10 are positioned between the support columns 62 of the lattice body 60, and the bent portions 10c of the support legs 10 and 10 are connected to the male screws 60a of the lattice body 60. .. Are pushed into the inner surface of the male screw 60 a, and the top portions 10 d of the bent portions 10 c of the support legs 10 are brought into pressure contact with the flange 61 of the lattice body 60. The outside of the grid body 60 is covered with the net body 1 (see FIG. 11). In this case, in the extended portions 10b,... Of the support legs 10, 10, the bent portions 10e,... That are bent outward from the ends of the fixed portions 10a, 10a are formed. There is an effect that the strength of the extending portions 10b of the support legs 10, 10 and the pressure contact force of the top portion are increased.

  In the case of the dust draining nets a to d for the drainage drain, the fixing portions 10a and 10a of the support legs 10 and 10 are fixed to the inner upper portion of the net body 1 so as to extend along the radial direction and cross each other. May be fixed to any one of the inside of the circular portion at the top of the mesh body 1, the top of the inside side portion, and the range from the inside to the inside side portion of the circular portion. For example, as shown in FIG. You may make it adhere | attach along a direction and radial. Further, as shown in FIG. 13, the mesh body 1 may be bent and fixed from the inner side portion to the inner upper portion. In short, it is only necessary that the strength of the support legs 10, 10 can be improved by fixing the predetermined length of the support legs 10, 10 to the inner upper portion of the net body 1.

  Moreover, in the case of the said embodiment, although the net | network body 1 was comprised by arrange | positioning the wire 1a with which curvature and height become large toward the center part from front and back, right and left at equal intervals, The net body 1 knitted in the shape may be formed in a truncated cone shape. Moreover, as a material of the wire 1a, it is preferable to use the wire which gave the antirust process, or the stainless steel wire strong against rust.

  In the embodiment, the extending portions 10b of the support legs 10 are extended downward, but the top portions 10d of the support legs 10, 10 are elastically biased in the radially outward direction. It is possible to extend the extending portions 10b,... So that they gradually expand toward the lower side.

(A) is a perspective view of the dust net for drainage drains with an outer diameter of the ring of 80 mm according to one embodiment of the present invention, (b) is a plan view, and (c) and (d) are side sectional views. (A) is a perspective view of a dustproof net for drainage drain whose outer diameter is 110 mm, (b) is a plan view, and (c) and (d) are side sectional views. (A) is a perspective view of a dust-proof net for drainage drain whose outer diameter is 130 mm, (b) is a plan view, and (c) and (d) are side sectional views. (A) is a perspective view of a dust-proof net for drainage drain whose outer diameter is 150 mm, (b) is a plan view, and (c) and (d) are side sectional views. (A) is a perspective view of a dust-proof net for drainage drain having an outer diameter of a ring of 170 mm, (b) is a plan view, and (c) and (d) are side sectional views. (A) is a side view of a drain with a lattice, (b) is a plan view. (A) is a side view of a drain with a lattice, (b) is a plan view. (A) is a side view of a drain with a lattice, (b) is a plan view. (A) is a side view of a drain with a lattice, (b) is a plan view. The side sectional view showing the state where the dustproof net for drainage drains was attached to the drain with a lattice. The side sectional view showing the state where the dustproof net for drainage drains was attached to the drain with a lattice. Schematic which showed the dustproof net for drainage drains which fixed the fixing | fixed part of the support leg to the inner upper part of the net body along the radial direction. Schematic which showed the dustproof net for drainage drains which fixed and fixed the fixing | fixed part of the support leg from the inner side part of the net body to the upper part.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Net body, 1a ... Wire rod, 5 ... Ring, 10 ... Supporting leg, 10a ... Fixed part, 10b ... Extension part, 10c ... Bending part, 10d ... Top part, 10e ... Curved part, 50, 50 ', 500 , 500 '... Drain body, 51, 51', 510, 510 '... Tube connection, 52, 52', 520, 520 '... Grid connection, 53, 53', 530, 530 '... Upper end Opening 54, 54 ', 540, 540' ... Flange, 60, 60 ', 600, 600' ... Grid, 61, 61 ', 610, 610' ... Flange, 62, 62 ', 620, 620' ... Strut, 63 ... Dust-proof member, 63a ... Drain hole, 70, 70 '... Grid member, A to E ... Dust-proof net for drainage drain, A ... D ... Drain with grid,

Claims (2)

  A net (1) formed to bulge so as to cover the upper end opening (53) of the drain (A), and an upper end of the drain (A) fixed to the periphery of the lower end opening of the net (1) Dust-proof net for drainage drain comprising a ring (5) that abuts on a flange (61) provided in the opening (53) and a support leg (10, 10) disposed inside the net (1) The mesh body (1) is formed in a truncated cone shape, and the support legs (10, 10) are fixed to the inner upper part of the mesh body (1) and the mesh body (1). ) Are bent from the end of the fixed part (10a) so as to be separated from the inner side part of the ring (5), and are extended to several places in the circumferential direction of the ring (5), and the drain (A) It is comprised with the bending part (10c) formed by bending from the edge part of this extension part (10b) so that it may press-contact with an inner surface Dust-proof network for waste water drain, wherein the door.   The extending portion (10b) of the support leg (10, 10) is formed with a bending portion (10e) that is bent radially outward at a bending portion that is bent from an end portion of the fixing portion (10a). The dustproof net for drainage drain according to claim 1, wherein

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