JP2010112101A - Filter for street inlet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structurally simple filter for a street inlet, which is easily attached to/detached from even the small diameter street inlet etc. made of a synthetic resin, and which stably covers only an outflow port of the street inlet without being displaced from a predetermined position after attachment. <P>SOLUTION: This filter for the street inlet consists of: first and second positioning means for performing positioning in the street inlet, which are made of an arc-shaped and rod-shaped member with a central angle of 180° or more; a filter body which is directly or indirectly supported by the first and second positioning means so as to cover only the outflow port from inside between the first and second positioning means; a lifting means which is connected between two opposed points of the first positioning means so as to prevent the excessive deformation of the filter body and facilitate attachment to/detachment from the street inlet; and a means for stopping the turning of the filter body, which recedes from a surface of the filter when undergoing a reaction force from an inner wall surface of the street inlet, and which protrudes in other cases. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a filter used for rainwater for collecting and draining rainwater and the like, and in particular for installation at an outlet of rainwater, supported by the positioning means between a pair of upper and lower rod-shaped positioning means. In the filter main body, the surface of the filter main body has one end fixed to the filter main body or the first or second positioning means, and the other end protruding from the surface of the filter main body. Thus, the present invention relates to a filter for rainwater that is provided with a means for preventing rotation of the filter body that forms an elastically deformable cantilever support structure.

  In rainwater, foreign matter such as gravel, mud, leaves, etc. flows in from the outside or upstream of the rainwater, so in large rainwater made of concrete, for example, Japanese Utility Model Publication No. 59-80582 (Patent Document 1), As disclosed in Kaihei 7-82790 (Patent Document 2) and JP-A-8-296271 (Patent Document 3), a squirrel-type filter is provided at the opening, the permeation outlet, or the like. A technique is known in which a foreign substance is removed from rainwater by providing a cap-type dome-shaped filter or the like at the outlet.

  However, although a basket-type filter is suitable for removing foreign matter from drainage that flows vertically from top to bottom, it can function almost effectively for removing foreign matter from wastewater that flows horizontally. In fact, it was not useful. For this reason, for a rainwater outlet that forms a horizontal flow, use a cap-shaped dome-shaped filter with several legs extended on the back of the filter, etc. It was used by being inserted and fixed inside (see FIGS. 1 and 2 of Patent Document 1).

  However, the rainwater outlet that forms the horizontal flow is generally located at a deep location far from the top opening of the rainwater, so the filter legs as described above are inserted into the outlet. In the cap-type dome type filter type that must be fixed by doing so, there is a problem that it is extremely difficult to attach to and detach from the outlet and the workability is deteriorated. In particular, in the case of large rainwater made of concrete with a large diameter, the dome-shaped filter may be detachable by entering the rainwater, but the small diameter that the worker cannot enter. In the case of rainwater made of synthetic resin, it is practically impossible to use a filter with legs as described above.

  In addition, if a filter is installed at the inlet of rainwater, pipes are likely to be clogged at the outlet of the branch pipe connected to the inlet (connection with rainwater). No filter is installed.

  On the other hand, in the case of rainwater basin made of a synthetic resin having a small diameter, foreign matter such as gravel, mud, leaves of trees flowing in from outside or upstream of stormwater as described in JP-A-8-311983 (Patent Document 4). In order to remove water, a bucket-shaped mud pool portion to which a mesh or a slit having a gap enough to prevent the passage of foreign matter is applied, and a technique for arranging a sediment trapping basket therein are known.

However, even in this type of small-diameter synthetic resin rainwater mass or rainwater infiltrated, foreign matter such as gravel, mud, leaves, etc. that have flowed into the rainwater mass is further discharged to the drainage system on the downstream side. No filter was used to prevent it, and it did not teach filter technology that could be easily attached to and detached from the rainwater outlet and overcame the conventional problems described above.
Japanese Utility Model Publication No. 59-80582 JP-A-7-82790 JP-A-8-296271 JP-A-8-311983

  Therefore, the present invention aims at preventing foreign matter such as gravel, mud, leaves, etc. flowing into the rainwater from being further discharged to the downstream drainage facility, and is made of a small diameter synthetic resin rainwater or rainwater. The purpose of the present invention is to provide a filter for rainwater with a simple structure that is extremely easy to attach and detach even when it penetrates and that can cover only the outlet of the rainwater stably without moving from the specified position. And

  Therefore, the present inventors do not apply a cap-type dome type filter with legs for each outlet of rainwater as in the prior art, but adapt the filter body to the shape of the inner wall of the rainwater, We have invented a rainwater filter with a simple structure that can be installed to cover only the outlet of rainwater by allowing it to be taken in and out through the upper opening of the rainwater along the inner wall of the rainwater.

  In this case, if the filter body has a cylindrical shape with substantially the same curvature as the inner wall surface of the rainwater, taking into account only the attachment and detachability of the filter, the filter may adhere to the surface of the filter temporarily or with a strong drainage flow. It can be considered that foreign matter such as dead leaves is subjected to resistance to drainage and rotates in the circumferential direction (is displaced from the outlet). Therefore, the present inventors have developed a rotation prevention means for the filter body that does not restrict the vertical movement for attaching and detaching the filter body but can firmly regulate the circumferential rotation, and has a rotation prevention structure. The rainwater filter according to the present invention has been completed.

  Specifically, according to the present invention, the first positioning means composed of an arc-shaped rod-shaped member having a central angle of at least 180 degrees for positioning in rainwater and the lower side thereof are arranged. By the first positioning means and the second positioning means, the first positioning means and the second positioning means cover only the outlet from the inside of the rainwater trough between the first positioning means and the second positioning means. A net-like or slit-like filter main body supported directly or indirectly, and the first positioning means counteracts to prevent excessive deformation of the filter main body and facilitate attachment / detachment with respect to rainwater. Suspension means connected between the two points, and means for stopping the rotation of the filter body, when the filter body faces the inner wall of the rainwater Retracted toward the surface of the filter body in response to a reaction force from the inner wall surface, and when the filter body is opposed to the rainwater outlet, the surface of the filter body is directed into the outlet. The anti-rotation means provided on the outer surface of the filter body, which does not restrict vertical movement for attaching and detaching the filter body but restricts rotation in the circumferential direction. An additional filter is provided.

  As described above, the rainwater filter according to the present invention supports the filter body by the first and second positioning means whose size is selected according to the inner diameter of the rainwater for positioning in the rainwater. In addition, the rotation preventing means provided on the surface of the filter main body has a feature of preventing rotation (displacement) in rainwater.

  In the present invention, since the filter main body is supported via the first and second positioning means, the outflow port for the rainwater is located at the upper part by increasing the distance between the first and second positioning means. Even in the case where the filter body is disposed at a deep position far from the opening, the filter body can be easily attached and detached from the upper opening of the rainwater.

  Thus, since the rainwater filter according to the present invention is mounted in the rainwater via the first and second positioning means, the filter body has various shapes without being affected by the shape of the filter body. Can be installed at the outlet of rainwater. For example, the shape of the filter body is not only a curved filter that can be placed in contact with the inner wall of rainwater, but also a dome-shaped filter and a bottomed cylindrical filter. A filter having various shapes can be used without particular limitation as long as it can cover the outlet.

  Further, the size of the filter main body can be set to any size as long as it can cover the target rainwater outlet. Therefore, for example, if the length of the upper edge and the lower edge of the filter body has a length that can cover the outlet of the rainwater, the arc length of the first and second positioning means that support it It may be a short length.

  Further, the height of the filter main body does not need to have a length for directly connecting the first positioning means and the second positioning means, and is larger than the diameter of the rainwater outlet, for example. It may be a circular shape having a diameter shorter than the distance between the first positioning means and the second positioning means. In such a case, however, the circular filter body needs to be indirectly supported using a bar-shaped auxiliary member or the like that connects the first and second positioning means in the height direction.

  In the present invention, the filter body forms an integral structure with the first and second positioning means, but can arbitrarily cover the outlet regardless of the size of the first and second positioning means. The shape and arbitrary size of the rainwater can be set, and the first and second positioning means can be arranged at any position in the rainwater, so only the outlet is avoided. Can be installed selectively.

  Therefore, the rainwater filter according to the present invention can cover a plurality of outlets with one filter body, and can cover a plurality of outlets with a plurality of filters corresponding to each, and therefore, The present invention can also be applied to a combined type rainwater having a plurality of outlets and / or a plurality of inlets. For example, if it is intended to cover all the multiple outlets with one filter body, remove only the part corresponding to the rainwater inlet from one filter body and only the inlet with one filter body. Avoid all the multiple outlets can be covered.

  In the present invention, the filter body is installed only at the rainwater outlet. When the filter is installed at the rainwater inlet, the outlet of the branch pipe connected to the inlet (rainwater This is because it is considered that pipe clogging is likely to occur at the connecting portion).

  The filter body only needs to have a mesh or slit suitable for removing foreign matter such as gravel, mud, leaves, etc. flowing from outside or upstream of rainwater, such as metal or plastic. Various types of filters can be used. However, in consideration of cost, ease of processing, etc., the filter body is preferably a metal wire mesh filter.

  The first and second positioning means are not particularly limited in the type, shape and properties of the materials used therein, but have an arc shape having a central angle of at least 180 degrees for positioning in rainwater. Since it is necessary, it is preferably made of a metal rod-like member having elasticity.

  Therefore, the filter body is a metal wire mesh filter, and the first and second positioning means are made of substantially the same rod-like members as the wire mesh members used for the upper and lower edges of the filter body, When the wire mesh member can be replaced, the upper and lower wire mesh members of the filter body can be shared by the first and second positioning means. That is, in the rainwater filter according to the present invention, the functions of the first and second positioning means are shared by the metal mesh members used at the upper and lower edges of the filter body, and the first is apparently the first. A rainwater filter having a configuration in which the second positioning means is omitted can be provided.

  In addition, positioning the rainwater filter in the rainwater means that the rainwater filter according to the present invention is installed at a predetermined position with a degree of stability that does not rattle in the rainwater. In use, this is achieved by selecting first and second positioning means having a curvature substantially equal to the curvature of the inner wall surface of the rainwater.

  In the present invention, the reason that the first and second positioning means need to be arcs having a central angle of at least 180 degrees is that the central angle of the first and second positioning means is 180. This is because if the angle is less than 1 degree, the first and second positioning means and the filter main body supported by the positioning means may tilt away from the inner wall surface in the rainwater.

  Further, the reason why the first and second positioning means are not formed in a ring shape having a central angle of 360 degrees is that if the first and second positioning means are circular ring shapes, This is because the elastic deformation of the second positioning means may be hindered and smooth attachment / detachment to / from the rainwater may not be possible. Therefore, in the present invention, the first and second positioning means are not formed in a ring shape, but are formed in arc shapes that are free at both ends, thereby ensuring flexibility by elastic deformation of the first and second positioning means. Thus, the attachment / detachment to / from the inside of the rainwater is facilitated, and the followability of the shape to the inner wall surface of the rainwater is improved.

  The second positioning means that supports the filter body from the bottom is supported by contacting the step on the inner wall provided at the bottom of the rainwater outlet, taking into account the stability after the rainwater filter is installed. May be.

  In this case, particularly in the case of a rainwater basin of the type in which a bucket-shaped mud reservoir and a sediment trapping basket are arranged in the bottom as described in Patent Document 4, the rainwater basin is traversed. The suspension means of the filter placed on the top and the upper edge of the sediment catching basket cooperate to allow the soil catching basket to be attached and detached together with the rainwater filter placed on the top. There is an advantage that workability such as internal cleaning and inspection is improved.

  In the present invention, the suspension means connected between the two opposing points of the first positioning means is disposed in order to prevent excessive deformation of the rainwater filter and to make it easy to attach and detach the rainwater filter. .

  Therefore, the suspension means may have a simple structure such as a rod-shaped member. When the filter is inserted and removed using a hook or the like, the suspension means is prevented from being displaced (maintaining a balance) by being suspended. In order to stabilize, the central part may be provided with an upwardly bent part for hooking a hook or the like or a shape that is convex upward as a whole.

  Further, the suspension means reinforces the strength of the first positioning means, while maintaining the appropriate flexibility to allow the first positioning means to follow the shape of the inner wall surface of the rainwater. Preferably it is made.

  Therefore, when importance is attached to the shape of the inner wall surface of rainwater rather than the strength of the first positioning means, adaptability, ease of attachment / detachment, etc., the suspension means has two points opposed to the first positioning means. Can be separated into two suspension elements. By adopting such a configuration, the suspension means applies a bending load to the first positioning means by relatively moving the two separated suspension elements, and the curvature of the first positioning means increases. It can be easily elastically deformed (to reduce the diameter).

  Further, the two separated suspension elements may be pivotably connected using a pivoting means having a hinge mechanism or a pivot mechanism. In this case, the first positioning means lifts or suspends the rotating means of the suspension means or its adjacent area, so that a bending load is applied via the suspension means so that the curvature is increased (the diameter is reduced). Automatically elastically deforms. For this reason, the rainwater filter according to the present invention can be attached to and detached from the rainwater very easily.

  In the present invention, the anti-rotation means provided on the outer surface of the filter body is preferably manufactured from a rod-like member, and the filter body or the first or first body is formed so as to form, for example, an elastically deformable cantilever support structure. It is preferable to have a fixed end fixed to the positioning means 2 and a free end protruding from the surface of the filter body.

  In this case, when the filter body is opposed to the inner wall surface of the rainwater, the anti-rotation means is retracted toward the surface of the filter body due to the reaction force from the inner wall surface, and the filter body flows into the rainwater stream. When facing the outlet, it protrudes from the surface of the filter body toward the inside of the outlet so as not to restrict the vertical movement for attaching and detaching the filter body but to regulate the circumferential rotation.

  Thus, in the rotation stop means, if a cantilever support structure having a fixed end and a free end is employed with respect to the filter body, it functions advantageously for the above purpose.

  Therefore, the anti-rotation means of the present invention may be a cantilever support structure having one free end with respect to one fixed end, such as an I shape or an II shape, when viewed in plan, or It may be a cantilever support structure having two free ends with respect to one fixed end, such as a Y shape, a V shape, or a T shape. These shapes are simple in structure and suitable for manufacturing from rod-shaped members, and further, only the rotation in the circumferential direction is restricted without restricting the vertical movement when the rainwater filter according to the present invention is attached or detached. It is extremely effective.

  In addition, when removing the filter of the present invention, the rotation stopping means prevents the portion protruding into the rainwater outlet from being caught on the inner wall of the outlet, so that the protruding portion is R or the inner wall surface of the outlet. It is preferable to provide an inclination angle with respect to. The rotation stopping means has such a shape in the vicinity of the free end thereof, thereby improving the ease of attaching and detaching the rainwater filter.

  According to the present invention, in order to prevent foreign matter such as gravel, mud, leaves, etc. flowing into the rainwater from being further discharged to the downstream drainage facility, the rainwater is made of synthetic resin with a small diameter or rainwater. To provide a rainwater filter with a simple structure that is extremely easy to attach and detach even if it penetrates, and that can stably cover the outlet of the rainwater without moving from the specified position after installation. it can.

  In particular, if the drainage resistance is caused by a strong drainage flow or foreign matter such as dead leaves temporarily attached to the filter surface, the filter may rotate (displace) from the rainwater outlet. According to the present invention, the rotation stopping means of the filter body can firmly restrict only the rotation in the circumferential direction without restricting the vertical movement for attaching and detaching the filter body.

  In the rainwater filter according to the present invention, the first and second positioning means for supporting the filter body and positioning in the rainwater are provided. A filter body having various shapes and sizes, such as a bottomed cylindrical filter, can be attached to the outlet of rainwater.

  Hereinafter, a rainwater filter having a rotation stop structure according to an embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the examples shown below, and various modifications can be made without departing from the technical idea of the present invention.

  FIG. 1 shows a front view (a), a side view (b), and a plan view (c) of a rainwater filter 1 according to a first embodiment of the present invention.

  As will be understood with reference to FIG. 1, a rainwater filter 1 according to the present invention includes a first arc-shaped positioning means 2 for positioning in a rainwater tank and a second positioning means disposed below the first positioning means 2. And the filter body 4 made of a metal wire mesh supported directly between the first and second positioning means 2 and 3, and preventing excessive deformation of the filter body and rainwater. In order to facilitate attachment / detachment to / from the suspension, the suspension means 5 is mounted on the first positioning means 2. Further, the rainwater filter 1 according to the present invention includes a rotation stop means 6 having an elastically deformable cantilever support structure on the outer surface of the filter body 4 for restricting the rotation in the circumferential direction.

  FIG. 2 shows a case where the rainwater filter 1 of the first embodiment shown in FIG. 1 is installed in a rainwater tank 10 of the type having a bucket-shaped mud reservoir 11 and a sediment trapping basket 12 at the bottom. Sectional drawing (b) at the time of cutting out the rainwater trough 10 shown by the top view (a) of FIG. 2 and Fig.2 (a) in the AA cross section is shown.

  As shown in FIG. 2B, the second positioning means 3 that supports the filter body 4 from below is supported by abutting against a step 15 on the inner wall surface provided at the bottom of the rainwater outlet 14. When the filter 1 according to the present invention is applied to the rainwater trough 10 of the type having the bucket-shaped mud reservoir 11 and the earth and sand trapping basket 12 at the bottom as described above, it is arranged so as to cross the opening 16 of the rainwater trough 10. The filter suspension means 5 and the upper edge of the earth and sand catching basket 12 cooperate to allow the earth and sand catching basket 12 to be attached and detached together with the rainwater filter 1 disposed on the upper part thereof. There is an advantage that workability such as cleaning and inspection of rainwater is improved.

  As will be understood with reference to FIGS. 1 and 2, the rainwater filter 1 is an arc-shaped bar-shaped member having a central angle of at least 180 degrees for positioning in the rainwater 10. 1 positioning means 2 and second positioning means 3 are provided. The filter body 4 is directly supported between the first positioning means 2 and the second positioning means 3.

  The filter main body 4 made of a metal wire mesh shown in FIGS. 1 and 2 forms an integral structure with the first and second positioning means 2 and 3. Regardless of the size of the positioning means 2, 3, any shape and size that can cover the outlet 14 can be set, and the first and second positioning means 2, 3 can rain water Since it can also be arranged at an arbitrary position within 10, it can be selectively installed only at the outlet 14 while avoiding the inlet 10 of rainwater.

  In addition, in the rainwater filter 1 according to the first embodiment, the first and second positioning means 2 and 3 and the wire mesh members used for the upper and lower edges of the filter body 4 are substantially the same rod-shaped members. Therefore, the first and second positioning means 2 and 3 are shared by using the metal mesh members of the upper and lower edges of the filter body 4 (see FIGS. 1A and 1B). ).

  Furthermore, in the filter main body 4 of the first embodiment, as shown in FIG. 9, it extends in the vertical direction so as to connect the corresponding upper and lower rear ends at the rear ends of the first and second positioning means 2 and 3. A wire mesh member may be provided. In this case, since the rear end portions of the first and second positioning means 2 and 3 are prevented from being caught when the filter is attached / detached, smoother attachment / detachment of the rainwater filter 1 according to the first embodiment is ensured.

  As described above, the rainwater filter 1 according to the present invention is mounted in the rainwater 10 through the first and second positioning means 2 and 3, so that it is not affected by the shape of the filter body 4. A filter body having a simple shape can be attached to 10 outlets 14 of rainwater.

  For example, the shape of the filter body 4 has a curved shape that can be arranged so that the filter body is in contact with the inner wall surface 13 of the rainwater trap 10 like the filter 1 for rainwater trap shown in FIG. A shape that can cover the outlet of rainwater, such as a filter body 40 three-dimensionally formed into a dome shape as shown in FIG. 3A and a bottomed tubular filter 41 shown in FIG. If there are any, filters having various shapes can be used without any particular limitation.

  When the dome-shaped filter body 40 as shown in FIG. 3A is used, it is possible to cover the rainwater outlet by using the minimum required filter material, and the three-dimensional filter area can be reduced. There is an advantage that the risk of filter clogging due to adhesion of foreign matters such as dead leaves is reduced by enlargement.

  In addition, when the bottomed cylindrical filter 41 as shown in FIG. 3B is used, foreign matters such as dead leaves that flow out further from the rainwater are removed at the outer periphery of the cylindrical filter 41. However, since rainwater can permeate or overflow the tubular filter 41 and reliably flow out from the inside of the tubular filter 41 to the downstream side, there is an advantage that the inspection and maintenance cycle of the rainwater filter can be extended. is there.

  However, when the height (diameter) of the filter body 40 is shorter than the distance between the first positioning means 2 and the second positioning means 3 as in the case of the dome-shaped filter body 40, FIG. ), It is necessary to indirectly support the dome-shaped filter body 40 by using a rod-shaped auxiliary member 20 that connects the first and second positioning means 2 and 3 in the height direction.

  As shown in FIGS. 1 (c) and 2 (a), the rainwater filter 1 according to the present invention is used to prevent excessive deformation of the filter body 1 and facilitate attachment / detachment to / from the rainwater tank 10. A suspension means 5 connected between two opposing points 21 and 22 of one positioning means 2 is provided. Therefore, if the suspension means 5 is utilized, the rainwater filter 1 according to the present invention can be used even when the outlet 14 of the rainwater 10 is disposed at a deep position far from the upper opening 16. The filter body 4 can be easily attached and detached from the upper opening 16 of the rainwater tank 10.

  FIG. 4 shows another modification of the suspension means 5. The suspension means 5 may have a simple structure such as a rod-shaped member, for example, and when the filter is inserted and removed using a hook or the like, the suspension position is prevented by keeping the balance with the hook or the like. Suspension means 50, 51, 52 (see FIGS. 3 (a) to (c)) having an upward bent portion for hooking a hook or the like at the center for stabilization, or a generally upwardly convex shape. ). However, the suspension means 5 maintains an appropriate flexibility to allow the first positioning means 2 to follow the shape of the inner wall surface 13 of the rainwater 10 while reinforcing the strength of the first positioning means 2. Preferably, it is made of a structure and a material.

  Therefore, when the followability, adaptability, ease of attachment / detachment, etc. with respect to the shape of the inner wall surface 13 of the rainwater 10 are more important than the strength of the first positioning means 2, the suspension means as shown in FIG. 53 can be separated into two suspension elements 55, 56 between two opposing points 21, 22 of the first positioning means 2. By adopting such a configuration, the suspension means 53 applies a bending load to the first positioning means 2 by relatively moving the two separated suspension elements 55 and 56, and the first positioning means 2 2 can be easily elastically deformed so as to increase the curvature of 2 (reduce the diameter).

  Further, as shown in FIG. 5, the two separated suspension elements 55 and 56 may be connected so as to be rotatable using a rotating means 57 having a hinge mechanism or a pivot mechanism. In this case, the first positioning means 2 lifts or suspends the rotation means 57 of the suspension means 54 or its adjacent area, so that a bending load is applied via the suspension means 54 and the curvature increases (reduction in diameter). To automatically elastically deform. For this reason, the rainwater filter 1 according to the present invention can be easily attached to and detached from the rainwater 10.

  The rainwater filter 1 according to the present invention rotates the filter 1 from the outlet 14 of the rainwater 10 even when it receives drainage resistance due to a strong drainage flow or foreign matter such as dead leaves temporarily attached to the filter surface. In order to prevent (or not shift), rotation prevention means 6 is provided on the outer surface of the filter body 4 (see FIG. 1).

  The anti-rotation means 6 has a fixed end 60 fixed at one end to the filter body 4, while the other two ends form free ends 61 and 62 protruding from the surface of the filter body 4. It has a Y shape. Therefore, the rotation stop means 6 has an elastically deformable cantilever support structure, and when the filter body 4 is opposed to the inner wall surface 13 of the rainwater 10, it receives the reaction force from the inner wall surface 13 to receive the filter When the filter body 4 is retracted toward the surface of the main body 4 and faces the outlet 14 of the rainwater 10, the filter body protrudes from the surface of the filter body 4 into the outlet 14. Only the rotation in the circumferential direction is firmly restricted without restricting the vertical movement for attaching and detaching 4 (see FIG. 2).

  Thus, it is preferable that the shape of the rotation stop means 6 has a cantilever support structure having a fixed end and a free end with respect to the filter main body 4, and therefore is shown in FIGS. 7 (a) to (d). Thus, when the anti-rotation means 6 is viewed in plan, the cantilever support structure has one free end with respect to one fixed end as in the I-type shape 64 (a) or II-type shape 65 (b). Cantilevered support structure having two free ends for one fixed end, such as Y-shaped 6 (see FIG. 1), V-shaped 66 (c) or T-shaped 67 (d) It may be. These shapes are simple in structure and suitable for production from rod-shaped members, and further, only the rotation in the circumferential direction is restricted without restricting the vertical movement when the rainwater filter 1 of the present invention is attached or detached. It is extremely effective to do.

  Further, when the filter 1 of the present invention is removed, the rotation stop means 6 prevents the portion of the rainwater 10 that protrudes into the outlet 14 from being caught on the inner wall of the outlet 14. An angle of inclination is given to R and the inner wall surface of the outlet (see FIG. 1B).

  FIG. 8 shows a front view (a), a side view (b), and a plan view (c) of the rainwater filter 1 according to the second embodiment of the present invention.

  The rainwater filter 1 'according to the second embodiment has a filter main body 4 made of a metal wire mesh extending in the circumferential direction by the same length as that of the first and second positioning means. Otherwise, the rainwater according to the first embodiment is used. It has the same structure and the same structure as the first filter 1. Therefore, also in the rainwater filter 1 'of the second embodiment, the first and second positioning means 2 and 3 and the mesh members used at the upper and lower edges of the filter body 4 are substantially the same. Therefore, the first and second positioning means 2 and 3 are shared by using the mesh members of the upper and lower edges of the filter body 4 (FIGS. 8A and 8B). )reference).

  As described above, in the rainwater filter 1 ′ of the second embodiment, a plurality of outlets can be covered with one filter body 4, and therefore, a combined type having a plurality of outlets and / or a plurality of inlets. It can also be applied to rainwater (not shown).

  As a result of the above, according to the present invention, for the purpose of preventing foreign matter such as gravel, mud, leaves, etc. flowing into the rainwater from being further discharged into the drainage system on the downstream side, A rainwater trough filter with a simple structure that is extremely easy to attach and detach even if it is rainwater infiltrated or rainwater infiltrated, and can stably cover the rainwater outlet without moving from the specified position after installation. Can be provided.

It is the front view (a), side view (b), and top view (c) of the filter for rain water of Example 1. It is the top view (a) and AA sectional drawing (b) in the state which mounted | wore the rainwater trough with a mud reservoir part with the filter for rainwater trough of Example 1. FIG. It is a schematic diagram which shows the modification of the filter main body of the filter for rainwater according to this invention. It is a schematic diagram which shows the modification of the suspension means means of the filter for rainwater according to this invention. It is a schematic diagram which shows the modification by which the suspension means of the filter for rainwater according to this invention was isolate | separated into two components. It is a schematic diagram which shows the modification by which the suspension means isolate | separated into two components is connected by the rotation means. It is a schematic diagram which shows the modification of the rotation stop means of the filter for rainwater according to this invention. It is the front view (a), side view (b), and top view (c) of the filter for rain water of Example 2. It is the front view (a), side view (b), and top view (c) of the modified example of the rainwater filter for Example 1.

Explanation of symbols

1, 1 '············· Rainwater filter 2 ·················· First positioning means 3 Second positioning means 4, 40, 41 ... Filter body 5, 50, 51, 52, 53, 54 ... Suspension means 6, 64, 65, 66, 67 ... Anti-rotation means 10 ・ ・ ・ ・ ・ ・ ・ ・ Rain water mass 11 ・ ・ ・ ・ ・ ・ ・ ・ Mud reservoir 12 ・ ・ ・ ・ ・ ・ ・ ・Sediment-trapping basket 13 ..... Inner wall surface 14 ..... Outlet 15 ........... Step 16 ····································· 20 .... Element 57 ... Rotating means 60 ... Fixed end 61, 62 ... Free end

Claims (11)

A first positioning means comprising an arc-shaped rod-shaped member having a central angle of at least 180 degrees and a second positioning means disposed below the first positioning means for positioning in rainwater;
Directly or indirectly by the first positioning means and the second positioning means so as to cover only the outlet from the inside of the rainwater trough between the first positioning means and the second positioning means. A supported mesh or slit filter body,
Suspension means connected between two opposing points of the first positioning means to prevent excessive deformation of the filter body and facilitate attachment / detachment with respect to rainwater, and rotation of the filter body. Means for stopping, when the filter main body is opposed to the inner wall surface of the rainwater mass, is retracted toward the surface of the filter main body due to a reaction force from the inner wall surface, and the filter main body is When facing the rainwater outlet, it protrudes from the surface of the filter body into the outlet, so that the vertical movement for attaching and detaching the filter body is not restricted, but the circumferential rotation A rainwater filter comprising the rotation stopping means provided on the outer surface of the filter main body.   The rotation stopping means includes a fixed end fixed to the filter body or the first or second positioning means so as to form an elastically deformable cantilever support structure, and a free end protruding from the surface of the filter body. The rainwater filter according to claim 1, comprising a rod-shaped member having   The rainwater filter according to claim 1 or 2, wherein the filter body is a metal wire mesh filter.   4. The rainwater according to claim 3, wherein the first and second positioning means made of the rod-shaped member are shared by using the upper and lower wire mesh members of the filter body. Filter.   The rainwater drainage according to claim 2, wherein the anti-rotation means has an I shape, II shape, Y shape, V shape or T shape when viewed in plan. Filter.   The anti-rotation means has a structure integrally connected so as to have one free end with respect to one fixed end or a structure integrally connected so as to have two free ends with respect to one fixed end. The rainwater filter according to claim 2, wherein the rainwater filter is provided.   The anti-rotation means is provided with an inclination angle with respect to R or the inner wall surface of the outlet so that the portion protruding into the outlet does not get caught on the inner wall of the outlet when the rainwater filter is removed. The rainwater filter according to claim 5 or 6, wherein the rainwater filter is provided.   2. The rainwater according to claim 1, wherein the suspension means is provided with a portion bent upward or a generally convex shape upward in order to stabilize the suspension position. Filter.   The suspension means is separated between the two opposing points so that the curvature of the first positioning means can be increased by applying a bending load to the first positioning means. The rainwater filter according to claim 1, which is characterized by the following.   10. The rainwater filter according to claim 9, wherein the separated suspension means are connected to each other by a turning means so as to be rotatable.   2. The rainwater filter according to claim 1, wherein the rainwater filter is supported by bringing the second positioning means into contact with a step portion of an inner wall surface provided at a lower portion of the rainwater outlet. Rainwater filter.

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