Prevention device

Abstract

To provide an invasion prevention device capable of preventing invasion of an invader such as pests.SOLUTION: An invasion prevention device 3 includes a C-shaped substrate 31 installed on an optional position on an inner peripheral surface of a riser 7 of a rainwater basin 2, and a net-like invasion prevention body 32 detachably attached to the substrate 31. The invasion prevention body 32 has a net-like member 42 having multiple water conduction holes passable by rainwater but impassable by pests, and an elastic member 41 attached to the periphery of the net-like member 42.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a passage prevention device for preventing the passage of a specific object. position

Background Art

[0002] Conventionally, for example, a rainwater gutter described in the following Patent Document 1 is known.

[0003] This conventional rainwater gutter is mainly used as a public rainwater gutter. During construction, for example, an inlet is formed on the side surface of the gutter body using a holsaw, and a rainwater inlet pipe is connected to the formed inlet. Further, a lid body having a through hole is detachably attached to the upper end portion of the riser pipe.

Prior Art Document

Patent Document

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the case of the above conventional example, there is a risk that intruders such as pests may enter the rainwater gutter through the through hole of the lid body.

[0006] The present invention has been made in view of such points, and an object thereof is to provide a passage prevention device capable of preventing the passage of a specific object.

Means for Solving the Problems

[0007] The passage prevention device according to the present invention is a passage prevention device for preventing the passage of a specific object, and includes a base body attached to a piping portion, and a passage prevention body attached to the base body and having a water passage hole through which the object cannot pass.

Effects of the Invention

[0008] According to the present invention, it is possible to prevent the passage of a specific object.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Modes for Carrying Out the Invention

[0010] The first embodiment of the present invention will be described with reference to FIGS. 1 to 5.

[0011] In FIG. 1, reference numeral 1 denotes a tub device, and this tub device 1 includes a rainwater tub 2 which is a drainage tub into which rainwater as drainage flows, and an intrusion prevention device 3 which is installed in the rainwater tub 2 and prevents the passage (intrusion) of pests (such as mosquitoes, etc.) which are intruders as specific objects.

[0012] The example illustrated in FIG. 1 is an example in which the intrusion prevention device 3 is installed in a tool - less and retro - fitting manner at an arbitrary position (desired position) on the inner peripheral surface of the riser pipe 7 of the existing rainwater sump 2 buried in the ground in order to prevent pests that have passed through the lid 9 from invading into the rainwater sump 2 without using special tools.

[0013] As shown in FIG. 1, the rainwater sump 2 is, for example, made of synthetic resin, and includes a sump body 6, a riser pipe (flow path through which drainage flows) 7 which is a vertical pipe portion erected on the sump body 6, a lid receiver 8 fixedly attached to the upper end portion of the riser pipe 7, and a lid 9 detachably attached to the lid receiver 8. Note that the rainwater sump 2 is not limited to being made of synthetic resin and may be made of, for example, concrete.

[0014] The sump body 6 has an inlet portion 11, an outlet portion 12, a cleaning port portion 13, and a sludge storage portion (container storage portion) 14. The downstream end portion of the inflow pipe 16 is connected to the inlet portion 11 that opens toward one side. The upstream end portion of the outflow pipe 17 is connected to the outlet portion 12 that opens toward the other side. The lower end portion of the riser pipe 7, which is a cylindrical cleaning pipe, is connected to the cleaning port portion 13 that opens upward.

[0015] A sludge storage container 18, which is a bottomed cylindrical container with an open top surface, is detachably stored in the sludge storage portion 14. The sludge storage container 18 has a container body 19 in which rainwater, mud, etc. accumulate, and a handle 20 provided at the upper end portion of the container body 19. Note that, for example, when mosquitoes invade the sump body 6, there is a possibility that mosquito larvae will be generated in the rainwater accumulated in the sludge storage container 18.

[0016] The lid receiver 8 has an insertion portion 21 which is a connecting portion fixedly connected to the inner peripheral side of the upper end portion of the riser pipe 7, and a lid receiving portion 22 into which the lid 9 is detachably fitted. A circular opening 23 is formed in the lid receiving portion 22, and this opening 23 is closable in an openable and closable manner by the lid 9. This opening 23 is constituted by the upper side portion of the internal space 24 of the short - cylindrical lid receiver 8.

[0017] Further, the lid receiving portion 22 has an inwardly projecting annular support portion 25 that receives and supports the lower surface of the outer peripheral portion of the lid body 9. The inner diameter of this support portion 25 is smaller than the inner diameter of the riser pipe 7.

[0018] Note that the lid receiver 8 is not limited to a configuration connected to the inner peripheral side of the upper end portion of the riser pipe 7, and may also have a configuration such as a connection portion (receiving port) connected to the outer peripheral side of the upper end portion of the riser pipe 7.

[0019] The lid body (lattice lid) 9 has through holes 28 which are a plurality of holes penetrating the upper and lower surfaces. Each through hole 28 is formed to be large enough to allow not only rainwater but also pests such as mosquitoes to pass through. Therefore, below the lid body 9, an intrusion prevention device 3 for preventing the intrusion of pests that have passed through the through holes 28 to a predetermined position (for example, intrusion into the lower mud sump container 18, etc.) is arranged.

[0020] As shown in FIG. 2, the intrusion prevention device (pest intrusion prevention device) 3 includes a base body 31 which is a telescopically deformable C-shaped support body fixedly attached based on deformation at an arbitrary position on the inner peripheral surface of the riser pipe 7 of the rainwater tub 2, and an intrusion prevention body 32 which is a passage prevention body having a plurality of through holes 33 penetrating the upper and lower surfaces and is detachably attached to the base body 31.

[0021] Each through hole 33 of the intrusion prevention body 32 is smaller than the through hole 28 of the lid body 9 and is formed to be large enough to allow rainwater to pass through but not large enough to allow pests (objects) of a specific size to pass through. Specifically, the through hole 33 is formed to have a dimension smaller than that which allows mosquitoes of a size of 4.5 mm to 5.5 mm to pass through, that is, a dimension of, for example, about 3 mm to 4 mm.

[0022] The base body 31 is composed of, for example, only a C-shaped member 35 made of an elastically deformable synthetic resin. This C-shaped member 35 is in the shape of a strip plate curved in a C shape in a plan view, and has a notch 36 in a part of the circumferential direction. Further, the C-shaped member 35 has an attachment surface portion 37 fixed to the inner peripheral surface of the riser pipe 7 on its outer peripheral surface, and has, at the upper part, a support portion 38 to which the outer peripheral portion of the intrusion prevention body 32 is detachably attached to support (position and fix) the outer peripheral portion.

[0023] And the outer diameter of the base body 31 composed of only such a C-shaped member 35 is larger than the inner diameter of the riser pipe 7 in a state before elastic deformation toward the diameter-reduced side, which is the radially inner side (an enlarged state before attachment to the piping portion), but is the same as the inner diameter of the riser pipe 7 in a state after elastic deformation (diameter-reducing elastic deformation) toward the diameter-reduced side (a reduced state after attachment to the piping portion).

[0024] Therefore, as is also apparent from FIG. 2(a), the base body 31 after diameter-reducing elastic deformation is fixedly attached in close contact with the inner peripheral surface of the riser pipe 7 by an elastic restoring force based on the elastic deformation. The inner diameter of the base body 31 in the reduced state after this attachment is larger than the outer diameter of the sediment storage container 18 located below. That is, the sediment storage container 18 can pass through the base body 31 in its reduced state. Note that the base body 31 may be firmly fixed to the inner peripheral surface of the riser pipe 7 using fixing means such as an adhesive. Further, the base body 31 is not limited to the C-shaped member 35, and may be in a plate shape as long as it follows the wall in the pipe and becomes a portion (hooking portion) where the intrusion prevention body 32 can be hooked.

[0025] The intrusion prevention body (net-like body) 32 is composed of, for example, a plurality of elastically deformable members, that is, for example, two members. Specifically, as is also apparent from FIG. 2(b), the intrusion prevention body 32 is an elastic member 41 which is an annular rubber-made elastic portion detachably attached to the support portion 38 of the base body 31 in the state after attachment and supported in a placed state, and a net-like member 42 which is a disc-shaped metal-made net portion detachably fitted and held in a concave groove portion 43 of the elastic member 41.

[0026] The elastic member 41 has, on the inner peripheral side, a concave groove portion 43 which is a holding portion for holding the outer peripheral portion of the net-like member 42, and has, on the lower surface of the outer peripheral side, a fitting concave portion 44 which is a fitting portion that fits detachably with the support portion 38 of the base body 31. Further, the elastic member 41 has, on the outer peripheral surface, an attachment surface portion 45 that is detachably attached to the inner peripheral surface of the riser pipe 7. Note that the outer diameter of the elastic member 41 is the same as or slightly larger than the inner diameter of the riser pipe 7.

[0027] The net-like member 42 is formed in a planar net-like (mesh-like) shape having a plurality of water passing holes 33 through which rainwater can pass (and air can also pass) and through which pests cannot pass. And the net-like member (net) 42 is detachably attached to the base body (net receiver) 31 via the elastic member 41 detachably attached to the frame portion 47 on the outer peripheral side (it may not be detachable).

[0028] That is, the elastic member 41 is a connecting member for detachably connecting the net-like member 42 to the base body 31. That is, the intrusion prevention body 32 has, on the outer peripheral side, an elastic member 41 which is an annular elastic portion capable of elastic deformation, and this elastic member 41 is located between the base body 31 and the net-like member 42.

[0029] Note that the net-like member 42 may be directly attached to the base body 31 without using the elastic member 41. Further, the net-like member 42 may be made not only of metal (SUS is preferable from the viewpoint of corrosion prevention if it is made of metal), but also formed of a polymeric material. If it is made of resin, for example, a mesh having a predetermined periodic structure using polyvinyl chloride or the like excellent in moldability, or a non-woven fabric formed into a predetermined aperture diameter can be used. Also, for a resin pipe, if it is a material with high frictional resistance, it can be easily and simply fixed to the wall surface (inner peripheral surface) of the piping portion. Examples of such a material include rubber and elastomer.

[0030] Next, the installation procedure for installing the intrusion prevention device 3 in the existing rainwater tub 2 will be described.

[0031] First, as shown in FIGS. 3(a) and (b), after the operator removes the lid body 9 from the lid receiver 8 to open the opening 23, the operator applies a pressing force from both sides to the expandable base body 31, and while elastically deforming the base body 31 with a reduced diameter, passes it through the internal space 24 of the lid receiver 8 and inserts it into the riser pipe 7.

[0032] Then, when the pressing force is released at an arbitrary position within the riser pipe 7, the base body 31 expands due to the elastic restoring force of the base body 31 and is fixedly attached to an arbitrary position on the inner peripheral surface of the riser pipe 7. In this way, the base body 31 is simply fixed to a desired position on the inner peripheral surface of the riser pipe 7. Note that, for example, an adhesive may be used to adhesively fix the base body 31 to the inner peripheral surface of the riser pipe 7.

[0033] Next, as shown in FIGS. 4(c) and (d), the operator inserts an expandable intrusion prevention body 32, that is, an elastic member 41 attached to the outer peripheral side of the mesh member 42 (in other words, a mesh member 42 set on the inner peripheral side of the elastic member 41), into the riser pipe 7 through the internal space 24 of the lid receiver 8 while slightly elastically deforming it with a reduced diameter, and detachably attaches it to the base body 31.

[0034] That is, it is attached so that the intrusion prevention body 32 is fitted and placed above the base body 31 fixedly attached to an arbitrary position on the inner peripheral surface of the riser pipe 7.

[0035] In this way, the intrusion prevention body 32 is supported in a horizontal posture by the base body 31 in a fixed state to the piping section and is positioned and fixed at an arbitrary position within the riser pipe 7.

[0036] At this time, the support portion 38 of the base body 31 and the fitting recess 44 of the intrusion prevention body 32 are fitted to each other so as to be detachable. Note that instead of such a fitting, for example, it may be attached by simply placing it on the base body 31, or the intrusion prevention body 32 may be detachably attached to the base body 31 by relatively simple means such as a magnet, a hook-and-loop fastener, a taper (insertion), etc. In short, the separable connecting means between the base body 31 and the intrusion prevention body 32 is arbitrary.

[0037] Next, as shown in FIG. 4(e), finally, the operator attaches the lid body 9 to the lid receiver 8 to close the opening 23, and the installation work of the intrusion prevention device 3 is completed.

[0038] In this way, the operator can install the intrusion prevention device 3 tool - less at an arbitrary position on the inner peripheral surface of the riser pipe 7 of the existing rainwater pit 2 without using any special tools.

[0039] In the above - illustrated example, the case where the intrusion prevention body 32 in a set state with the elastic member 41 attached to the outer peripheral side of the mesh member 42 in advance is inserted (and can also be removed) into the rainwater pit 2 in its set state has been described. However, for example, after inserting the elastic member 41 into the rainwater pit 2 and attaching it to the base body 31, the mesh member 42 may be attached to the elastic member 41 in its attached state. Also, the same applies to the example of FIG. 5 described later. After removing the mesh member 42 from the elastic member 41, the elastic member 41 may be removed from the base body 31.

[0040] Next, the removal procedure when taking out the sediment container 18 from the rainwater pit 2 will be described.

[0041] When taking out the sediment container 18 in which sediment 50 composed of mud containing rainwater and the like has accumulated in the container body 19 from the sediment part 14 of the rainwater pit 2 as shown in FIG. 5(a), first, as shown in FIG. 5(b), the operator removes the lid body 9 from the lid receiver 8 to open the opening 23.

[0042] Next, as shown in FIG. 5(c), after the operator removes the intrusion prevention body 32 from the base body 31 in its set state, the operator passes the intrusion prevention body 32 through the internal space 24 of the lid receiver 8 while slightly reducing its diameter and elastically deforming it, and takes it out from the rainwater pit 2. At this time, the base body 31 remains fixed to the inner peripheral surface of the riser pipe 7. Optionally, the base body 31 may be taken out from the rainwater pit 2, and the attachment position of the base body 31 can also be adjusted as appropriate.

[0043] Next, as shown in Fig. 5(d), the operator lifts the mud sump container 18 by holding the handle 20, and sequentially passes the mud sump container 18 through the inside of the base body 31 and the lid receiver 8, and takes it out from the rainwater tub 2. Thus, the operation of taking out the mud sump container 18 is completed.

[0044] After removing the sediment 50 in the mud sump container 18, the mud sump container 18 is returned to its position in the mud sump portion 14, and the intrusion prevention body 32 is attached to the base body 31 to restore it to its original state.

[0045] And according to the above-described intrusion prevention device 3, pests such as mosquitoes (the intrusion objects) can be appropriately prevented from entering the tub body 6 of the rainwater tub 2, and thus, the generation of mosquito larvae and the like in the rainwater in the mud sump container 18 can be effectively prevented.

[0046] Also, for example, pests that accidentally enter the tub body 6 from the inlet portion 11 or the outlet portion 12, or adults that have grown from larvae such as mosquito larvae in the mud sump container 18 cannot pass through the intrusion prevention body 32. Therefore, the diffusion of pests and adults (not only flying pests such as mosquitoes but also pests larger than a predetermined size such as millipedes like centipedes) outside the rainwater tub 2 can be prevented. Thus, by preventing passage into the tub body 6 and preventing passage outside the tub body 6, the breeding and diffusion of pests can be prevented.

[0047] Moreover, objects larger than the water passage holes 33 of the intrusion prevention body 32 (for example, those having a size of 4.5 mm to 5.5 mm or larger (for example, stones, fallen leaves, garbage such as tobacco)) cannot pass through the intrusion prevention body 32. Therefore, it is possible to prevent such large objects from accumulating and clogging in the mud sump container 18.

[0048] In addition, without using any special tools, the intrusion prevention device 3 can be easily retrofitted at an arbitrary position on the inner peripheral surface of the riser pipe (piping section) 7 of the existing rainwater tub 2, and the sediment container 18 can also be easily cleaned. Therefore, for example, there is no need to design a dedicated tub, and the intrusion prevention device 3 can be easily installed tool - less on any existing tub. Note that the intrusion prevention device 3 can also be easily installed tool - less at an arbitrary position on the inner peripheral surface of the riser pipe 7 of a newly installed tub in the same manner.

[0049] Furthermore, since the intrusion prevention device 3 includes a base body 31 attached to an arbitrary position on the inner peripheral surface of the riser pipe 7 of the rainwater tub 2, and an intrusion prevention body 32 that is separate from the base body 31 and is detachably attached to the base body 31, it can be easily and appropriately installed at an arbitrary position within the riser pipe 7.

[0050] In addition, since the intrusion prevention body 32 has an elastic member 41 detachably attached to the base body 31 and a net - like member 42 detachably (replaceably) held by the elastic member 41, when the net - like member 42 is damaged, only the net - like member 42 can be replaced.

[0051] Furthermore, since the base body 31 is composed of a C - shaped member 35 that can be elastically deformed (expanded and contracted) inward in the radial direction, it can easily pass through the internal space 24 of the lid receiver 8 and can appropriately accommodate various riser pipes 7 with different inner diameters.

[0052] Next, a second embodiment of the present invention will be described with reference to FIG. 6.

[0053] The intrusion prevention body 32 of the intrusion prevention device 3 shown in FIG. 6 has a net - like member 42 formed in an upwardly convex inverted bowl shape. Therefore, for example, even when foreign matters such as dust flow into the riser pipe 7 together with rainwater, the foreign matters are guided toward the outer peripheral side of the inverted bowl - shaped net - like member 42 and accumulate on the elastic member 41, so it is difficult for them to accumulate on the net - like member 42 and clogging is less likely to occur.

[0054] Note that the net member 42 may be formed, for example, in a bowl shape that is convex downward, or in an inclined shape that is inclined with respect to the horizontal direction, and may also be in a conical shape, a pyramid shape, or the like.

[0055] Next, a third embodiment of the present invention will be described with reference to FIG. 7.

[0056] The intrusion prevention device 3 shown in FIG. 7 does not include a base body 31 and is composed only of a deformable (expandable and contractible) net-like intrusion prevention body 32. And this intrusion prevention body 32 is detachably attached to an arbitrary position on the inner peripheral surface of the riser pipe 7 based on its deformation by the elastic restoring force of the elastic member 41 that has undergone diameter-reducing elastic deformation.

[0057] Also, the intrusion prevention body 32 in each of the above-described embodiments may have an operation portion such as a handle, a chain, or a string so that the attachment and detachment work of the intrusion prevention body 32 can be easily performed. Further, the elastic member 41 and the net member 42 of the intrusion prevention body 32 may be kneaded or impregnated with a drug such as a repellent or an insecticide so that it elutes or leaches out by rainwater and accumulates in the mud sump container 18.

[0058] Next, a fourth embodiment of the present invention will be described with reference to FIG. 8.

[0059] The intrusion prevention device 3 shown in FIG. 8, similar to that in FIG. 7 above, does not include a base body 31 and is composed only of a deformable (expandable and contractible) net-like intrusion prevention body 32. This intrusion prevention body 32 is selectively deformable (switchable) between a reduced state that is a first state in which it can be inserted into and removed from the riser pipe 7, and an expanded state that is a second state in which it can be detachably attached to an arbitrary position on the inner peripheral surface of the riser pipe 7.

[0060] That is, for example, the intrusion prevention body 32 itself has a structure that can expand and contract, and the intrusion prevention body 32 in the pre - shrunk state is expanded in the riser pipe 7 by a one - touch operation to change from the shrunk state to the expanded state, and based on this deformation, the intrusion prevention body 32 can be detachably attached to an arbitrary position on the inner peripheral surface of the riser pipe 7.

[0061] Such an intrusion prevention body 32 preferably has a configuration that selectively deforms between a shrunk state and an expanded state based on a one - touch operation, but is not limited to this configuration, and may also have a configuration that deforms by a plurality of operations.

[0062] In addition, in any of the above embodiments, the pipe section (the pipe line section through which the fluid flows) where the passage prevention device is installed has been described as a riser pipe (vertical pipe), but it is not limited to a pipe. For example, it may be a part of the tub body or a part of the lid receiver, etc., and the orientation (vertical or horizontal) does not matter.

[0063] Also, the material of the pipe section, the members constituting the passage prevention device, etc. may be materials other than the above and are arbitrary.

[0064] Furthermore, the passage prevention body (passage prevention device) preferably has a net - like configuration having a net - like part at least in part (although preferably substantially the whole), but is not limited to the net - like configuration. For example, it is arbitrary as long as it has a configuration with water - passing holes through which water can pass but through which a specific object cannot pass.

[0065] Also, the base body is not limited to a configuration consisting of only one member (for example, a C - shaped member), and may be composed of a plurality of members, for example.

[0066] Although some embodiments of the present invention and their modified examples have been described, it is also possible to appropriately combine each embodiment and each modified example without departing from the gist of the present invention.

Explanation of Reference Numerals

[0067] 1 Tub device 3 Intrusion prevention device which is a passage prevention device The riser pipe which is a piping section The sediment container which is a container 31 Substrate The intrusion prevention body which is a passage prevention body 33 Water passing hole The elastic member which is an elastic part

Claims

1. A passage prevention device for preventing the passage of a specific object, comprising: a base body attached at an arbitrary position on the inner peripheral surface of a cylindrical pipe that is a piping section; a passage prevention body attached to the base body, entirely located within the cylindrical pipe, and having a water passage hole through which the object cannot pass The passage prevention device is characterized by comprising the above.

2. The base body is attached at an arbitrary position on the inner peripheral surface of the cylindrical pipe based on elastic deformation, and the passage prevention body is entirely located within the cylindrical pipe by being attached by being placed on the base body attached at the arbitrary position. The passage prevention device according to claim 1, characterized by the above.

3. The base body is elastically deformable, and the outer diameter of the base body is larger than the inner diameter of the cylindrical pipe in a state before elastic deformation toward the diameter-reducing side, but is the same as the inner diameter of the cylindrical pipe in a state after elastic deformation toward the diameter-reducing side. The passage prevention device according to claim 1 or 2, characterized by the above.

4. The base body is an elastically deformable C-shaped member. The passage prevention device according to any one of claims 1 to 3, characterized by the above.

5. The base body is an elastically deformable curved strip-shaped member and has a notch in a part of the circumferential direction. The passage prevention device according to any one of claims 1 to 4, characterized by the above.

6. A passage prevention device for preventing the passage of a specific object, comprising: a passage prevention body having a water passage hole through which the object cannot pass; the passage prevention body is attached at an arbitrary position on the inner peripheral surface of a cylindrical pipe that is a piping section based on elastic deformation and is entirely located within the cylindrical pipe. The passage prevention device is characterized by the above.

7. A passage prevention device for preventing the passage of a specific object, comprising: a passage prevention body having a water passage hole through which the object cannot pass; the passage prevention body is deformable between a reduced state in which it can be inserted into and removed from a cylindrical pipe that is a piping section and an enlarged state in which it can be attached at an arbitrary position on the inner peripheral surface of the cylindrical pipe, and the passage prevention body is attached at the arbitrary position based on its deformation by deforming from the reduced state to the enlarged state within the cylindrical pipe and is entirely located within the cylindrical pipe. The passage prevention device is characterized by the above.

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