Cover mounting body and cover device

Abstract

To provide a cover device that can reduce the burden on workers. [Solution] The cover device 1 comprises a first cover body 21, a second cover body 22, and a cover mounting body 23. The cover mounting body 23 comprises a connecting portion 31 connected to the ventilation pipe 2 and having a ventilation opening 39, and a flange-shaped mounting portion 32 protruding from the outer surface of the connecting portion 31. Normally, the first cover body 21 is attached to the mounting portion 32 so as to cover the ventilation opening 39 and the ventilation pipe 2. On the other hand, when extended, the second cover body 22 is attached to the mounting portion 32 so as to cover the ventilation pipe 2 without covering the ventilation opening 39.

Description

Technical Field

[0001] Embodiments of the present invention relate to a cover attachment body and a cover device.

Background Art

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

[0003] This conventional cover device is, for example, attached to the upper part of a ventilation pipe on a building roof or the like, and is a ventilation port cover that prevents intrusion of rainwater, foreign substances, etc. from the outside into the ventilation port. Then, after attaching a ventilation joint having three ventilation ports to the upper part of the ventilation pipe and installing the ventilation port cover, when a fixing auxiliary member is attached to the ventilation port cover, it is pressed against the ventilation joint and the ventilation port cover is fixed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, in the above conventional configuration, for example, when an odor problem occurs after installation, as a countermeasure, in order to keep the odor away, the ventilation pipe is extended using an extension pipe or the like. In this case, a large-scale operation (construction) such as replacing the existing ventilation pipe is required, and the burden on the operator is extremely large.

[0006] Therefore, one of the problems of the embodiments of the present invention is to provide a cover attachment body and a cover device capable of reducing the burden on the operator.

Means for Solving the Problems

[0007] An embodiment of the present invention is a cover mounting body connected to a ventilation pipe, comprising a connecting portion connected to the ventilation pipe and having a ventilation opening, and a mounting portion provided on the connecting portion, wherein under normal circumstances, a first cover body is attached to the mounting portion so as to cover the ventilation opening and the ventilation pipe, and when the ventilation pipe is extended, a second cover body different from the first cover body is attached to the mounting portion so as to cover the ventilation pipe without covering the ventilation opening.

[0008] Furthermore, an embodiment of the present invention is a cover device for covering a ventilation pipe, comprising a first cover body used under normal conditions, a second cover body used when extending the ventilation pipe, which differs from the first cover body, and a cover mounting body connected to the ventilation pipe, wherein the cover mounting body is connected to the ventilation pipe and comprises a connecting portion having a ventilation opening, and a mounting portion provided on the connecting portion, wherein under normal conditions the first cover body is attached to the mounting portion so as to cover the ventilation opening and the ventilation pipe, and when extending the ventilation pipe, the second cover body is attached to the mounting portion so as to cover the ventilation pipe without covering the ventilation opening. [Effects of the Invention]

[0009] According to embodiments of the present invention, the burden on workers can be reduced. [Brief explanation of the drawing]

[0010] [Figure 1] This is an exploded perspective view of a cover device according to one embodiment of the present invention. [Figure 2] This is a disassembled cross-sectional view of the same cover device. [Figure 3] This diagram shows the first cover body of the cover device in use (normal operation), with (a) being a cross-sectional view and (b) being a front view. [Figure 4] This diagram shows the second cover body of the same cover device in use (extended), with (a) being a cross-sectional view and (b) being a front view. [Figure 5]This is a diagram of the cover mounting body (common socket) of the same cover device, where (a) is an upper perspective view and (b) is a lower perspective view. [Figure 6] This is a cross-sectional view of the cover mounting body shown above. [Figure 7] This is a diagram of the first cover body (rooftop cover body) of the same cover device, where (a) is an upward perspective view and (b) is a downward perspective view. [Figure 8] This is a cross-sectional view of the first cover body shown above. [Figure 9] The above diagram shows the first cover body in its allowable state, with (a) being a partially cutaway perspective view and (b) being a partially cutaway plan view. [Figure 10] The above diagram shows the first cover body in its restricted state, with (a) being a partially cutaway perspective view and (b) being a partially cutaway plan view. [Figure 11] This is a diagram of the second cover body (balcony cover body) of the same cover device, where (a) is an upper side perspective view and (b) is a lower side perspective view. [Figure 12] This is an exploded perspective view of the second cover body shown above. [Figure 13] This is a cross-sectional view of the second cover body shown above. [Figure 14] This is a cross-sectional view of a cover device according to another embodiment of the present invention (when using an integrated second cover body). [Figure 15] This is a diagram of the same integrated second cover body, where (a) is an upper side perspective view and (b) is a lower side perspective view. [Figure 16] The above diagram shows the integrated second cover body, where (a) is a front view (the rear view is the same as the front view) and (b) is a left side view (the right side view is the same as the left side view). [Figure 17] This is a diagram of the same integrated second cover body, where (a) is a plan view and (b) is a bottom view. [Figure 18] This is an enlarged cross-sectional view of the AA-type second cover body of the same integrated type. [Figure 19] This is an enlarged cross-sectional view of the BB of the same integrated second cover body. [Figure 20] This is an explanatory diagram showing how to remove the second cover unit of the same integrated type for maintenance.

Embodiment for Carrying out the Invention

[0011] One embodiment of the present invention will be described with reference to FIGS. 1 to 13.

[0012] In FIGS. 1 to 4, reference numeral 1 denotes a cover device, which is for covering, for example, a ventilation pipe 2 for taking in outdoor air (outside air).

[0013] <00......>That is, the cover device 1 is mainly made of synthetic resin and can be used outdoors. It is a cover device (cover system) for the ventilation pipe for covering and protecting the upstream end side (tip side) of a synthetic resin-made outside air intake ventilation pipe (ventilation pipe line) 2 provided vertically penetrating the roof floor portion 3 of a building such as a mid-rise or high-rise housing.

[0014] The ventilation pipe 2 has a ventilation riser pipe portion 2a formed by the portion on the upstream end side (upper end side portion) located above the roof floor portion 3 of the building. A waterproof sheet (such as a mesh roofing), which is a waterproof member, is attached to the outer peripheral surface of the cylindrical ventilation riser pipe portion 2a. That is, the outer peripheral surface of the ventilation riser pipe portion 2a is covered with the waterproof sheet 5.

[0015] The waterproof sheet 5 is tightened against the outer peripheral surface of the ventilation riser pipe portion 2a by a tightening band (such as a SUS band), which is a metal-made tightening member. And the upper end portion of the waterproof sheet 5 is sealed by a sealing material 7 having an irregular shape. As a result, the intrusion of rainwater between the outer peripheral surface of the ventilation riser pipe portion 2a and the waterproof sheet 5 is prevented.

[0016] Note that, instead of the sealing material 7, for example, an elastic member (such as a rubber packing) or a tightening member (such as a SUS band) may be used to prevent the intrusion of rainwater. Also, for example, by first attaching an elastic member so as to cover the sealing material 7 and then attaching a tightening member from above, it is possible not only to improve the water-stopping property but also to prevent the deterioration (mainly ultraviolet deterioration) of the sealing material 7.

[0017] Note: In the original text, there is an incomplete tag in line . I have left it as it is in the translation. If this is a mistake in the original, you may need to correct it before finalizing the translation. Also, the "......" in the translation of line indicates the incomplete tag content in the original.Furthermore, the downstream end of the vent pipe 2, although not shown in the diagram, is connected to a drain pipe (drainage pipeline) through which wastewater from the building's drainage facilities (toilets, kitchens, bathrooms, etc.) flows. When negative pressure occurs in the drain pipe, outside air from the vent pipe 2 is supplied to the drain pipe, relieving the negative pressure. The cover device 1 and the vent pipe 2 constitute a ventilation device (air supply device) 10 for supplying outside air (outside air) to the drain pipe installed inside the building.

[0018] Furthermore, the rooftop floor section 3 of the building is composed of, for example, a rooftop slab 11, a waterproofing layer 12, and mortar 13. The ventilation pipe 2 is composed of an upwardly projecting first pipe member (riser pipe member) 16 erected on the rooftop floor section 3 so as to project upward from the upper surface of the rooftop floor section 3, a socket 17 connected to the lower end of the first pipe member 16, and a second pipe member 18 whose upper end is connected to the socket 17.

[0019] The cover device 1 comprises a first cover body (cover body for the rooftop) 21, which is a cover body for normal use when the ventilation pipe 2 is not extended; a second cover body (cover body for the balcony) 22, which is a cover body for extended use when the ventilation pipe 2 is extended; a common cover mounting body (common socket) 23 to which either the first cover body 21 or the second cover body 22 can be selectively attached and detached, and which is connected to the upper end, which is the upstream end of the ventilation pipe 2; and a plurality of common mounting fixtures (common mounting members) 24, namely two, that can be manually operated by an operator without tools.

[0020] The mounting fixture 24 can be rotated directly by the operator's fingertips without the use of tools, but it has a notched groove 56 on its upper surface so that it can also be rotated (opened and closed) using tools or coins, for example. This notched groove 56 can be, for example, cross-shaped or straight-line-shaped.

[0021] Under normal circumstances, the first cover body 21 is detachably attached to the mounting portion 32 of the cover mounting body 23 by manual operation of the mounting fixture 24 by an operator (for example, manual rotation) so as to cover the upper side of the ventilation opening 39 of the cover mounting body 23 and the outer circumference of the ventilation riser pipe portion 2a of the ventilation pipe 2 (including the waterproof sheet 5, fastening band 6 and sealing material 7) (see Figure 3).

[0022] On the other hand, during extensions that differ from normal conditions, for example, when an odor problem occurs near the vent riser pipe section 2a and the vent pipe 2 is extended using an extension pipe 20 to move the odor away (odor countermeasures), the second cover body 22, which is different from the first cover body 21, can be detachably attached to the mounting part 32 of the cover mounting body 23 by manual operation of the mounting fixture 24 by a worker (for example, manual rotation), so as to cover the outer circumference of the vent riser pipe section 2a of the vent pipe 2 (including the waterproof sheet 5, fastening band 6 and sealing material 7) without covering the vent opening 39 of the cover mounting body 23 (see Figure 4).

[0023] In other words, in the cover device 1, one of several different types (two types) of cover bodies 21 and 22 is selected according to the installation position of the ventilation riser pipe section 2a and is attached to and supported by a cover mounting body 23 common to both cover bodies 21 and 22.

[0024] In other words, under normal circumstances, the first cover body 21 is attached to the cover mounting body 23 for use. However, for example, if the installation location of the ventilation riser section 2a of the ventilation pipe 2 is near an entrance to the rooftop or near a balcony, and the ventilation pipe 2 is extended using an extension pipe 20 or the like to keep the odor leaking from the ventilation riser section 2a away from that location, then the second cover body 22 is attached to the cover mounting body 23 instead of the first cover body 21 for use.

[0025] Furthermore, in this cover device 1, if, for example, an odor problem occurs after the first cover body 21 has been attached to the cover mounting body 23, the first cover body 21 can be easily replaced with the second cover body 22.

[0026] Furthermore, the extension pipe (extension means) 20 used when the odor problem occurs is, for example, as shown in Figure 4, composed of an elbow 26 connected to the upstream end of the vent pipe 2 via a cover mounting body 23 and a horizontal pipe member 27 whose downstream end is connected to this elbow 26, and a vent valve (intake valve) may be attached to the upstream end of this extension pipe 20.

[0027] It should be noted that the example shown in Figure 4 is not the only one; for example, although not shown, the vent pipe 2 may be extended using only a vent valve (extension means) capable of preventing odor leakage, without using an extension pipe 20. In other words, when extending the vent pipe 2, this also includes cases such as connecting the pipe connection part of the vent valve to the upstream end of the vent pipe 2 via a cover mounting body 23 (extending the vent pipe by connecting the vent valve to the cover mounting body).

[0028] The cover mounting body 23 consists of a threaded common socket (common component) used in the cover device 1, and is common to the first cover body 21 and the second cover body 22, which are two different types of cover bodies.

[0029] As shown in Figures 5 and 6, the cover mounting body 23 includes a cylindrical connecting portion 31 with open top and bottom surfaces that is connected to the upper end of the ventilation riser pipe section 2a of the ventilation pipe 2, and a flange-shaped mounting portion 32 that protrudes from the lower outer circumference of the connecting portion 31.

[0030] The connection portion 31 has a cylindrical socket-shaped lower connection port portion 36 on its lower side, to which the upper end of the ventilation riser pipe portion 2a of the ventilation pipe 2 is connected on the inner circumference side, both in the normal and extended positions. A flange-shaped mounting portion 32 is provided projecting radially outward from the outer surface of the lower connection port portion 36, and the lower connection port portion 36 has a circular lower opening 35 on its lower surface.

[0031] Furthermore, the connection portion 31 is normally covered by the first cover body 21, but when extended it is exposed without being covered by the second cover body 22, and has an upper connection port portion 37 on its upper side, which is cylindrical in shape and connected to the outer circumference side of the downstream end of the extension pipe 20 (for example, the receiving end of the elbow 26). The upper connection port portion 37 has a circular upper opening 38 on its upper surface, and this upper opening 38 serves as a ventilation opening 39 for taking in outside air.

[0032] Furthermore, since the upper connection port portion 37 is a socket-type, in addition to the elbow 26 shown in the example in Figure 4, other extension means such as a tee (a cleaning port may be provided), insect screen, bell mouth, and vent valve can be connected to the upper connection port portion 37, providing greater flexibility in piping. Also, compared to the receiving type, the height of the pipe member 27, which is the main horizontal ventilation pipe, from the rooftop floor portion 3 can be reduced, leading to a reduction in the number of parts during construction and an improvement in the appearance. Moreover, since a bell mouth can be attached, it can contribute to improving the amount of ventilation, and since an insect screen can be attached, it can be used in underground pits. Furthermore, if a tee is attached, a cleaning port can be installed at the top of the ventilation pipe while running it horizontally. In this case, it becomes easy to insert the hose of a high-pressure washer into the drain pipe, such as the drain riser, through the cleaning port.

[0033] The mounting portion 32 has a circular, plate-shaped mounting plate portion (flange-shaped plate portion) 41 that is integrally projected from the outer circumferential surface of the lower connection port portion 36 of the connection portion 31, and threaded portions 42 provided at multiple locations on the outer circumferential end of the mounting plate portion 41, i.e., two locations that are spaced apart from each other (for example, two locations symmetrical with respect to the center of the circular mounting plate portion 41). In the cover mounting body 23, the parts other than the metal threaded portions 42 are made of a single synthetic resin component integrally formed from, for example, synthetic resin.

[0034] The mounting plate portion 41 has a truncated cone-shaped inclined surface (tapered surface) 43 on its upper surface that is inclined with a predetermined inclination angle α (for example, 5 degrees) with respect to the horizontal direction, so that it is located lower towards the outer peripheral end. In other words, the upper surface of the mounting plate portion 41, which is the flange portion, is made of an inclined surface 43 that slopes downward toward the outer peripheral end so that rainwater does not accumulate on the upper surface. Similarly, the mounting fixture 24 may also have an inclined surface (tapered surface) formed on the flange portion 53 of the mounting fixture 24 to facilitate the flow of rainwater.

[0035] Furthermore, the mounting plate portion 41 has a short cylindrical, vertically shaped drop surface (vertical surface) 44 on its underside that allows water (rainwater, etc.) that has entered through the gap between the cover bodies 21, 22 and the cover mounting body 23 to fall off by its own weight. Therefore, the water (rainwater, etc.) that has entered will not flow down the sealant (caulking portion) 7 where cracks or peeling have occurred and enter the space between the outer surface of the ventilation riser pipe portion 2a and the waterproof sheet 5.

[0036] Furthermore, the downward surface (vertical surface) 44 of the mounting plate portion 41 is formed on the lower surface side of the mounting plate portion 41 so as to be located near the recess 50 on the outer circumference, and as a result it is located outside the sealing material (caulking portion) 7.

[0037] Furthermore, multiple (for example, four) triangular notched recesses 45 are formed on the outer peripheral edge of the mounting plate portion 41, spaced apart in the circumferential direction of the mounting plate portion 41. Note that the shape of the notched recesses 45 is not necessarily limited to a triangular shape and may be other shapes.

[0038] The threaded portion 42 is composed of, for example, a bolt 46, a nut 47, and a washer 48, with the threaded shaft portion 49 of the bolt 46 protruding upward from the upper surface of the mounting plate portion 41. The nut 47 is located in a recess 50 formed on the upper surface of the mounting plate portion 41.

[0039] Then, the screwed hole 51 of a mounting fixture (cap nut) 24, which is a screw-type fastener that can be rotated by an operator with their fingertips without the use of tools, is screwed into the screw shaft portion 49, which is the upwardly protruding screw portion of each of the two screwed portions 42. The screwed hole 51 is formed to open downwards on the inside of the roughly cylindrical main body portion 52, which can be grasped by an operator with their fingertips.

[0040] The first cover body 21 covers and protects the cover mounting body 23 and the ventilation riser pipe section (including waterproof sheet and sealing material, etc.) 2a of the ventilation pipe 2, and prevents rainwater, foreign objects, or small animals (e.g., birds) from entering the ventilation riser pipe section 2a of the ventilation pipe 2 through the upward-opening ventilation opening 39. The first cover body 21 is made of a single synthetic resin component, for example, which is integrally formed from synthetic resin.

[0041] As shown in Figures 7 to 10, the first cover body 21 includes a cylindrical cover body 61 with a closed top and an open bottom. In other words, this cover body 61 is a cylindrical shape with a top and bottom, having a disc-shaped top plate (top plate) 62 that covers the upper side of the ventilation opening 39 and a circular bottom opening 63 that opens downwards. Multiple ventilation holes 65 for taking in outside air are formed in the shape of elongated holes along the circumferential direction only on the upper side of this cylindrical cover body 61. The top plate 62 located above the ventilation opening 39 is formed, for example, in the shape of a curved surface that is convex upwards.

[0042] Furthermore, the cover body portion 61 has an upper cover portion 66 which is substantially cylindrical and has multiple ventilation holes 65 and two recessed portions 64, and a lower cover portion 67 which is cylindrical and does not have ventilation holes 65.

[0043] Furthermore, the space within the upper cover portion 66 is an upper internal space 68 that communicates with the outside through multiple ventilation holes 65, and the space within the lower cover portion 67 is a lower internal space 69 that is separated from the upper internal space 68 by a flange-shaped mounting portion 32. In other words, when the first cover body 21 is attached to the mounting portion 32 of the cover mounting body 23, the upper internal space 68 and the lower internal space 69 within the first cover body 21 are separated vertically by the flange-shaped mounting portion 32, and the two spaces 68 and 69 become independent and non-communicating with each other. This non-communicating state allows the sealing material (caulking portion) 7 to be properly shielded from rainwater, sunlight, etc.

[0044] The upper cover portion 66 has a plurality (for example, two) triangular plate-shaped mounting portions (mounting plates) 70 that are placed on the upper surface of the mounting plate portion 41 of the mounting portion 32 of the cover mounting body 23. The mounting portions 70 have elongated holes 71 through which the threaded shaft portion 49 of the threaded portion 42 of the mounting portion 32 of the cover mounting body 23 is inserted and removed.

[0045] On the other hand, the first cover body 21 is provided with a triangular-shaped engaging portion 75 that engages (contacts) with the engaging receiving portion 55 of the cover mounting body 23 in a removable manner. Each engaging receiving portion 55 is formed from a part of the lower surface of the outer peripheral end of the mounting plate portion 41 (a part of the lower surface in the vicinity of the notched recess 45).

[0046] The engaging portion (engaging surface) 75 is formed by the upper surface of a plurality (for example, four) vertically elongated guide ribs 76 with a triangular cross-section, which are projected from the inner circumferential surface of the lower cover portion 67 of the cover body portion 61. Each guide rib 76 is fitted into a corresponding notched recess 45, guiding the vertical movement (up and down motion) of the first cover body 21 relative to the cover mounting body 23 when attaching or detaching the first cover body 21. Therefore, the threaded shaft portion 49 of the cover mounting body 23 can be easily inserted into the elongated hole portion 71 of the first cover body 21, thereby improving workability.

[0047] Furthermore, the first cover body 21 is mounted on a cover mounting body 23 that is connected and fixed to the upper end of the ventilation pipe 2, and can be selectively changed between a restricted state and a permitted state by horizontal rotation about the vertical pivot axis (pivot point) X relative to the cover mounting body 23.

[0048] Here, Figure 9 shows the first cover body 21 in an allowable state, and Figure 10 shows the first cover body 21 in a restricted state.

[0049] Then, as shown in Figure 9, the mounting portion 70 of the first cover body 21 is placed on the upper surface of the mounting plate portion 41 of the mounting portion 32 of the cover mounting body 23, and the screw shaft portion 49 protruding upward from the upper surface of the mounting plate portion 41 is inserted into the elongated hole portion 71 so as to be movable along the elongated hole portion 71. When the worker rotates the first cover body 21 relative to the cover mounting body 23 by a predetermined angle (for example, 6 degrees) in one direction (direction a in the figure) about the rotation center axis X, the first cover body 21 changes from an allowable state to a restricted state, as shown in Figure 10.

[0050] Furthermore, the rotation of the first cover body 21 in one direction is restricted by the contact between the screw shaft portion 49 and one end portion of the elongated hole portion 71, and this restriction positions the first cover body 21 in a predetermined restricted state (restricted position).

[0051] When the restricted state shown in Figure 10 is reached, the engagement between the engaging portion 75 and the engaging receiving portion 55, that is, by, for example, planar contact, restricts the upward movement of the first cover body 21 placed on the cover mounting body 23 (the upward movement of the first cover body 21 relative to the cover mounting body 23).

[0052] In this state, the worker uses the space 77 within the recess 64 located on the mounting portion 70 to pinch the mounting fixture 24 with their fingertips and rotate it, thereby screwing the mounting fixture 24 onto the screw shaft portion 49. As a result, the first cover body 21 is fixedly attached to the mounting portion 32 of the cover mounting body 23 by the mounting fixture 24.

[0053] On the other hand, in the state shown in Figure 10, if the worker rotates the first cover body 21 relative to the cover mounting body 23 by a predetermined angle (for example, 6 degrees) in a direction opposite to the rotation center axis X (direction b in the figure), the first cover body 21 changes from a restricted state to a permissible state, as shown in Figure 9.

[0054] Furthermore, rotation of the first cover body 21 in other directions is restricted by contact between the screw shaft portion 49 and the other end portion of the elongated hole portion 71, and this restriction positions the first cover body 21 in a predetermined allowable state (allowable position).

[0055] In the permissible state shown in Figure 9, the engaging portion 75 and the engaging receiving portion 55 do not engage, and the upward movement of the first cover body 21 (upward movement of the first cover body 21 relative to the cover mounting body 23) is permitted. Therefore, in this state, the worker can move the first cover body 21 upward and remove it from the cover mounting body 23.

[0056] The second cover body 22 is used only when extending the ventilation pipe 2 with the extension pipe 20, and is intended to cover and protect the ventilation riser section (including waterproof sheet and sealing material, etc.) 2a of the ventilation pipe 2. In this extension, the ventilation opening 39 is located inside the extension pipe 20, so unlike the first cover body 21 described above, the second cover body 22 does not have the function of covering the upper side of the ventilation opening 39.

[0057] As shown in Figures 11 to 13, the second cover body 22 is composed of multiple (for example, two) segmented covers 81 that are divided into two in the circumferential direction. In other words, two segmented covers 81 that form a roughly C-shape in plan view are connected to each other and combined to form a cylindrical second cover body 22 with open top and bottom surfaces.

[0058] The cylindrical second cover body 22 has a circular upper opening 82 on its upper surface and a circular lower opening 83 on its lower surface. Each segmented cover 81 is made of a single synthetic resin component, for example, formed integrally from synthetic resin.

[0059] The split cover 81 includes an arc-shaped cover plate portion 85, and circular mounting portions 86 are provided projecting radially inward from both ends of the upper end of the cover plate portion 85 in the arc direction, and are placed on the upper surface of the mounting plate portion 41. The mounting portion 86 has an insertion hole 87 through which a screw shaft portion 49 is inserted and removed.

[0060] Furthermore, projections 88, each having a through hole 89, are provided at both ends of the lower end of the cover plate portion 86 in the arc direction, projecting radially inward. A bolt 91 is fixed to the projection 88 of one of the two divided covers 81, and the threaded shaft portion 92 of this bolt 91 protrudes upward from the projection 89. This upwardly protruding threaded shaft portion 92 is removably inserted into the through hole 89 of the projection 88 of the other divided cover 81 when the two divided covers 81 are assembled.

[0061] As mentioned above, since each of the segmented covers 81 does not have the same configuration, they cannot be attached to the mounting portion 32 of the cover mounting body 23 unless they are installed according to a predetermined procedure, thus preventing installation errors.

[0062] In other words, when an operator attaches the second cover body 22 to the cover mounting body 23, they must first place one of the divided covers 81, to which the bolt (protruding shaft) 91 is fixed to the protruding part 88, onto the mounting part 32 of the cover mounting body 23. Then, they must place the other divided cover 81 on top of the first divided cover 81 so that the bolt 91 of the first divided cover 81 is inserted into the through hole (guide hole) 89 of the protruding part 88 of the other divided cover 81, thus combining the two. This prevents incorrect installation of the multiple divided covers 81.

[0063] Next, the operation of the cover device (ventilation pipe cover device) 1 for the ventilation pipe 2 described above will be explained.

[0064] Under normal circumstances, as shown in Figure 3, the worker attaches the first cover body 21, which has ventilation holes 65, to the mounting portion 32 of the cover mounting body 23 using two mounting fixtures (fixing devices) 24, such that the first cover body 21 covers the ventilation riser pipe section 2a of the ventilation pipe 2 and the cover mounting body 23 connected to the upper end of this pipe section 2a.

[0065] The first cover body 21 is then fixed to the mounting portion 32 of the cover mounting body (cover support) 23 by the mounting fixture 24, and as a result is fixedly supported by the said mounting portion 32.

[0066] In this state, a gap 96 of a predetermined size exists between the lower opening 63 of the supported first cover body 21 and the upper surface of the rooftop floor 3. Furthermore, since the first cover body 21 is not placed on the upper surface of the rooftop floor 3, a slope adjustment member (spacer) used when the rooftop slab 11 has a steep slope is not required. In addition, in areas with heavy snowfall, where an installation height greater than the parapet height is required, no additional members (height adjustment members) for raising the height are needed, and this can be handled simply by changing the height of the ventilation pipe 2. Moreover, since it is not placed directly on the rooftop slab 11, etc., and the installation height is simply adjusted to the length of the ventilation pipe 2, a stable installation state is always maintained. These points also apply to the second cover body 22.

[0067] Furthermore, in this state, the multiple ventilation holes (slits for taking in outside air) 65 formed in the first cover body 21 are located above the waterproof sheet 5 and the sealing material (caulking part) 7, and are positioned opposite the upper connection opening portion 37 of the connection portion 31 of the cover mounting body 23. Therefore, the distance between the ventilation holes 65 and the ventilation opening 39 is short, making it possible to smoothly take in the desired amount of outside air when negative pressure is generated in the drain pipe, resulting in good ventilation performance.

[0068] Here, if, after the installation of the first cover body 21, an odor problem occurs in the vicinity, for example, the first cover body 21 is changed to the second cover body 22 in order to extend the ventilation pipe 2 using the extension pipe 20 in order to move away the odor leaking from the ventilation opening 39, as shown in Figure 4.

[0069] In this case, the worker unscrews the mounting fixture 24 and removes the first cover body 21 from the mounting part 32, and then uses the same two mounting fixtures 24 to attach the second cover body 22, which does not have ventilation holes, to the mounting part 32 of the cover mounting body 23 such that the second cover body 22 covers the ventilation riser pipe portion 2a of the ventilation pipe 2 without covering a predetermined portion of the cover mounting body 23 (for example, at least the upper connection port portion 37 of the socket shape).

[0070] Then, the second cover body 22 is fixed to the mounting portion 32 of the cover mounting body (cover support) 23 with the mounting fixture 24, and as a result is fixedly supported by the mounting portion 32. In this state, a gap 97 of a predetermined size exists between the lower opening 83 of the supported second cover body 22 and the upper surface of the rooftop floor 3.

[0071] Subsequently, the odor problem is resolved by connecting the downstream end of the extension pipe 20 to the upper connection port portion 37 of the connection portion 31 of the cover mounting body 23 and attaching a vent valve to its upstream end.

[0072] Therefore, with such a cover device 1, even if an odor problem occurs after the installation of the first cover body 21 and it becomes necessary to extend the ventilation pipe 2, the large-scale work (construction) such as replacing the existing ventilation pipe 2 that was conventionally required is unnecessary. All that is needed is to replace the cover mounting body 23, which is directly connected to the upper end of the ventilation pipe 2, with the second cover body 22. This reduces the burden on workers when extending the pipe in the event of an odor problem, and allows for an easy and inexpensive response to odor problems.

[0073] Furthermore, under normal circumstances, the first cover body 21 can be detachably attached to the mounting portion 32 so as to cover the ventilation opening 39 and the ventilation pipe 2 simply by manually rotating the screw-type mounting fixture 24 by the worker. Similarly, when extended, the second cover body 22 can be detachably attached to the mounting portion 32 so as to cover the ventilation pipe 2 without covering the ventilation opening 39, also simply by manually rotating the screw-type mounting fixture 24 by the worker. As a result, the worker can easily attach and detach the cover bodies 21 and 22 to the mounting portion (flange portion) 32 of the cover mounting body 23 without using any tools.

[0074] Moreover, regardless of which of the two types of cover bodies 21 and 22 is used, the high light-blocking properties ensure proper protection of the ventilation riser pipe section 2a, waterproof sheet 5, sealing material 7, etc., effectively preventing deterioration of waterproofing treatment parts (e.g., waterproof sheet, sealing material, or elastic member, etc.) due to ultraviolet rays from sunlight. Furthermore, the metal fastening band (SUS band, etc.) 6 wrapped around the waterproof sheet (waterproof layer) 5 is less likely to get wet and therefore less likely to rust.

[0075] Furthermore, the flange-shaped mounting portion 32 of the cover mounting body 23 has an inclined surface 43 on its upper side that slopes downward towards the outer end, and a vertical drop surface 44 on its lower side for allowing infiltrating water to fall off. Therefore, for example, during rainy weather, it is possible to properly prevent rainwater from accumulating on the cover mounting body 23, and even if rainwater penetrates to the lower side of the cover mounting body 23 as infiltrating water, the infiltrating water can be dropped off by the drop surface 44, thereby properly preventing rainwater from entering between the ventilation riser pipe 2a and the waterproof sheet 5.

[0076] Furthermore, the cylindrical cover body 61 of the first cover body 21 has a two-layer structure with an upper internal space 68 that communicates with the outside through a plurality of ventilation holes 65, and a lower internal space 69 that is separated from the upper internal space 68 by a flange-shaped mounting part 32 to which the first cover body 21 is attached. Therefore, even if rainwater enters the upper internal space 68 through the ventilation holes 65 during rainy weather, for example, it is possible to appropriately prevent the rainwater from entering the lower internal space 69.

[0077] Furthermore, since the cylindrical second cover body 22, which has openings on its top and bottom, is a two-part structure composed of two divided covers 81 that are divided in the circumferential direction of the second cover body 22, the worker can easily attach and detach the second cover body 22 to the mounting part 32 of the cover mounting body 23 without tools, even while the extension pipe 20 is connected to the connection part 31 of the cover mounting body 23 that is connected to the ventilation pipe 2 (as shown in Figure 4). Thus, maintenance of the waterproofing section after construction can be easily performed, for example.

[0078] In the above embodiment, the second cover body (balcony cover body) 22 was described as a segmented type consisting of multiple segmented covers (segmented members) 81, but it is not limited to this, and may be an integrated type consisting of a single member, for example, as shown in Figures 14 to 20.

[0079] Figure 14 is a cross-sectional view of the cover device 1 when the integrated second cover body 22 is in use. As shown in Figure 14, the integrated second cover body 22, like the split type (see Figure 4), is detachably attached to the mounting portion 32 of the cover mounting body 23 with a mounting fixture 24 so as to cover the outer circumference of the ventilation riser pipe portion 2a of the ventilation pipe 2 without covering the ventilation opening 39 of the cover mounting body 23.

[0080] In the example shown in Figure 14, unlike the example shown in Figure 4, the insert socket (expansion joint) 100 is connected to the connection part 33 of the cover mounting body 23, and the downstream end of the pipe member 27 is connected to this insert socket 100 via the elbow 26.

[0081] In the example shown in Figure 14, an expandable socket (expansion joint) 100 is used, but it is not necessarily required to be expandable. It is also possible to change it to a joint (pipe member) with a rubber ring socket instead of adhesive, which allows for maintenance (removal).

[0082] As shown in Figures 15 to 19, the integrated second cover body 22 is used only when extending the ventilation pipe 2 (for odor control) to cover and protect the ventilation riser section (including waterproof sheet and sealing material, etc.) 2a of the ventilation pipe 2. During this extension (for odor control), the ventilation opening 39 is located inside the extension pipe 20, so the integrated second cover body 22, like the segmented type, does not have the function of covering the upper side of the ventilation opening 39.

[0083] Here, the integrated second cover body 22 is made of a single, substantially cylindrical synthetic resin component formed integrally from synthetic resin, for example, and has a circular upper opening 101 on its upper surface and a circular lower opening 102 on its lower surface.

[0084] Furthermore, the integrated second cover body 22, like the first cover body 21, has a plurality (for example, two) triangular plate-shaped mounting portions (mounting plates) 103 that are placed on the upper surface of the mounting plate portion 41 of the mounting portion 32 of the cover mounting body 23. The mounting portions 103 have elongated holes 104 through which the threaded shaft portion 49 of the threaded portion 42 of the mounting portion 32 of the cover mounting body 23 is inserted and removed. The mounting portions 103 having elongated holes 104 are projected radially inward at two opposing locations on the upper end of the cylindrical cover body portion 105, which has open upper and lower surfaces. In addition, a roughly V-shaped rising plate 110 is erected on the edge of the triangular mounting portions 103 in plan view.

[0085] On the other hand, the integrated second cover body 22, like the first cover body 21, has a triangular-shaped engaging portion 106 that engages (contacts) with the engaging receiving portion 55 of the cover mounting body 23 in a removable manner. Each engaging receiving portion 55 is formed from a part of the lower surface of the outer peripheral end of the mounting plate portion 41 (a part of the lower surface in the vicinity of the notched recess 45).

[0086] The engaging portion (engaging surface) 106 is formed by the upper surface of a plurality (for example, four) of guide ribs 107 that are vertically elongated and have a triangular cross-section, projecting from the inner circumferential surface of the cylindrical cover body portion 105. Each guide rib 107 is fitted into a corresponding notched recess 45, guiding the vertical movement (up and down motion) of the integrated second cover body 22 relative to the cover mounting body 23 when attaching or detaching the integrated second cover body 22. Therefore, the threaded shaft portion 49 of the cover mounting body 23 can be easily inserted into the elongated hole portion 104 of the integrated second cover body 21, improving work efficiency and preventing installation errors.

[0087] Furthermore, the integrated second cover body 22, like the first cover body 21, is mounted on a cover mounting body 23 that is connected and fixed to the upper end of the ventilation pipe 2. It can be selectively changed between a restricted state and a permitted state by horizontal rotation around the vertical pivot axis (pivot point) X relative to the cover mounting body 23, and this also has the effect of preventing installation errors.

[0088] Then, although not shown in the figures, when the mounting portion 103 of the integrated second cover body 22 is placed on the upper surface of the mounting plate portion 41 of the mounting portion 32 of the cover mounting body 23, and the screw shaft portion 49 protruding upward from the upper surface of the mounting plate portion 41 is inserted into the elongated hole portion 104 so as to be movable along the elongated hole portion 104, the worker rotates the integrated second cover body 22 relative to the cover mounting body 23 by a predetermined angle (for example, 6 degrees) in one direction (direction a shown in Figure 17) about the rotational axis X, the integrated second cover body 22 changes from an allowable state to a restricted state.

[0089] Furthermore, the rotation of the integrated second cover body 22 in one direction is restricted by the contact between the screw shaft portion 49 and one end portion of the elongated hole portion 104, and this restriction positions the integrated second cover body 22 in a predetermined restricted state (restricted position).

[0090] In this restricted state, the upward movement of the integrated second cover body 22, which is placed on the cover mounting body 23, is restricted by the engagement of the engaging portion 106 and the engaging receiving portion 55, that is, by planar contact, for example (see Figure 10).

[0091] In this restricted state, the worker attaches the mounting fixture 24 to the screw shaft portion 49 by pinching it with their fingertips and rotating it. As a result, the integrated second cover body 22 is fixedly attached to the mounting portion 32 of the cover mounting body 23 by the mounting fixture 24. Therefore, the trouble of disassembling and reassembling the piping is eliminated, and the burden on the worker when extending the line in the event of an odor problem can be reduced.

[0092] On the other hand, in this restricted state, if the worker rotates the integrated second cover body 22 relative to the cover mounting body 23 by a predetermined angle (for example, 6 degrees) in a direction opposite to the one direction (direction b shown in Figure 17) about the rotation center axis X, the integrated second cover body 22 changes from the restricted state to the permitted state.

[0093] Furthermore, rotation of the integrated second cover body 22 in other directions is restricted by contact between the screw shaft portion 49 and the other end portion of the elongated hole portion 104, and this restriction positions the integrated second cover body 22 in a predetermined allowable state (allowable position).

[0094] In this permissible state, the engaging portion 106 and the engaging receiving portion 55 do not engage, and the upward movement of the integrated second cover body 22, which is placed on the cover mounting body 23 (upward movement of the integrated second cover body 22 relative to the cover mounting body 23), is permitted (see Figure 9). Therefore, in this permissible state, the worker can move the integrated second cover body 22 upward and remove it from the cover mounting body 23.

[0095] Here, the example shown in Figure 14 is an example where the ventilation pipe (riser pipe member) 2 is a polyvinyl chloride pipe (VP100) with a nominal diameter of 100 mm. However, as shown in Figure 20, if the diameter D of the integrated second cover body 22 is relatively large compared to the ventilation pipe 2, such as when it is a polyvinyl chloride pipe (VP75) with a nominal diameter of 75 mm, then, similar to the split type, the worker can easily attach and detach the integrated second cover body 22 to the mounting part 32 of the cover mounting body 23 without tools, while the extension pipe 20 remains connected to the connection part 31 of the cover mounting body 23 connected to the ventilation pipe 2. Thus, maintenance of the waterproofing section after construction can be easily performed.

[0096] Specifically, as shown in Figures 20(a) to (e), after removing the mounting fixture 24 from the screw shaft portion 49, the worker can move the integrated second cover body 22 to a retracted position that covers the pipe member 27 of the extension pipe 20 by lifting and rotating it 90 degrees. This makes it easy to perform maintenance work such as replacing the waterproof sheet 5 and sealing material 7 on the outer circumference of the ventilation pipe 2. After the maintenance work is completed, the worker can move the integrated second cover body 22 back to its original mounting position and then attach the second cover body 22 to the cover mounting body 23 using the mounting fixture 24.

[0097] In addition, in any of the above embodiments, the cover device is not limited to a configuration consisting of a first cover body, a second cover body different from the first cover body, a cover mounting body common to both cover bodies, and a mounting device (mounting means) also common to both cover bodies. For example, it may consist of one of the two cover bodies, a cover mounting body, and a mounting device.

[0098] Furthermore, the cover device can be installed and used in locations other than the building's rooftop, such as in the building's underground pit, and the installation location is arbitrary.

[0099] Furthermore, the cover mounting body is not limited to a configuration having a threaded portion (for example, a portion consisting of a bolt, nut, and washer) that engages with a cap nut; for example, it may have a configuration that does not include a threaded portion, and the means for attaching the cover body (first cover body, second cover body) to the cover mounting body is arbitrary. [Explanation of Symbols]

[0100] 1. Cover device 2. Ventilator 21. First Cover Body 22 Second Cover Body 23 Cover mounting body 24 Mounting hardware 31 Connection part 32 Mounting part 36 Lower connection port part 37 Upper connection port section 39 Ventilation openings 43 Slope 44 Falling surface 45 Notched recess 49. Threaded portion, which is the screw shaft portion. 55 Engagement receiving part 61 Cover body 65 ventilation holes 68 Upper internal space 69 Lower interior space 71 Long hole part 75 Engaging part 76 Guide projection 81-piece cover

Claims

1. A cover mounting body connected to a ventilation pipe, A connecting part connected to the aforementioned vent pipe and having a vent opening, The connection portion is provided with a mounting portion, Under normal circumstances, the first cover body is attached to the mounting portion so as to cover the ventilation opening and the ventilation pipe. When extending the ventilation pipe, a second cover body, different from the first cover body, is attached to the mounting portion such that it covers the ventilation pipe without covering the ventilation opening. A cover mounting body characterized by the following features.

2. Under normal circumstances, the first cover body is attached to the mounting part by operating the mounting fixture so as to cover the ventilation opening and ventilation pipe. When extended, the mounting device is operated to attach the second cover body to the mounting portion such that it covers the ventilation pipe without covering the ventilation opening. The cover mounting body according to claim 1, characterized in that it is as described above.

3. The connection part is, In both normal and extended configurations, the lower connection port portion has a socket shape to which the upstream end of the vent pipe is connected, It has an upper connection port portion with a socket shape to which the downstream end of the extension pipe is connected when extended. The cover mounting body according to claim 1 or 2, characterized in that it is as described above.

4. The mounting portion has an inclined surface that slopes downwards towards the outer end. The cover mounting body according to claim 1 or 2, characterized in that it is as described above.

5. The mounting section has a surface for allowing ingress water to fall off. The cover mounting body according to claim 1 or 2, characterized in that it is as described above.

6. A cover device for covering a ventilation pipe, The first cover body is used under normal circumstances, Unlike the first cover body, the second cover body is used when extending the ventilation pipe, It comprises a cover mounting body connected to the aforementioned vent pipe, The cover mounting body is A connecting part connected to the aforementioned vent pipe and having a vent opening, The connection portion is provided with a mounting portion, Under normal circumstances, the first cover body is attached to the mounting portion so as to cover the ventilation opening and the ventilation pipe. When extending the ventilation pipe, the second cover body is attached to the mounting portion such that it covers the ventilation pipe without covering the ventilation opening. A cover device characterized by the following features.

7. Under normal circumstances, the first cover body is attached to the mounting part by operating the mounting fixture so as to cover the ventilation opening and the ventilation pipe. When extended, the mounting device is operated to attach the second cover body to the mounting portion such that it covers the ventilation pipe without covering the ventilation opening. The cover device according to claim 6, characterized in that it is a cover device according to claim 6.

8. The first cover body is A cover body with a closed top and an open bottom, The cover body is provided with ventilation holes formed only on the upper side. The cover device according to claim 6 or 7, characterized in that it is a cover device according to claim 6 or 7.

9. The main body of the cover is, An upper interior space that communicates with the outside through ventilation holes, It has a lower internal space that is separated from the upper internal space by the mounting portion of the cover mounting body. The cover device according to claim 8, characterized in that it is a cover device.

10. The first cover body is selectively changeable between a restricted state and a permissible state by rotation relative to the cover mounting body, and is equipped with an engaging portion that engages with the engaging receiving portion of the cover mounting body. When the first cover body is in the restricted state, the engagement between the engaging portion and the engaging receiving portion restricts the upward movement of the first cover body relative to the cover mounting body. When the first cover body is in the permissible state, the engaging portion and the engaging receiving portion do not engage, and upward movement of the first cover body relative to the cover mounting body is permitted. The cover device according to claim 6 or 7, characterized in that it is a cover device according to claim 6 or 7.

11. The first cover body has an elongated hole through which the threaded portion of the cover mounting body is inserted. Based on the contact between the threaded portion and one end portion of the elongated hole, the rotation of the first cover body in one direction relative to the cover mounting body is restricted, thereby positioning the first cover body in a restricted state. Based on the contact between the threaded portion and the other end portion of the elongated hole, the rotation of the first cover in the other direction relative to the cover mounting body is restricted, thereby positioning the first cover in an acceptable state. The cover device according to claim 10, characterized in that it is a cover device according to claim 10.

12. The first cover body is equipped with a vertically elongated guide projection that is fitted into a notched recess of the cover mounting body. The guide projection guides the vertical movement of the first cover body relative to the cover mounting body. The cover device according to claim 6 or 7, characterized in that it is a cover device according to claim 6 or 7.

13. The second cover body is composed of multiple segmented covers that are divided in the circumferential direction. The cover device according to claim 6 or 7, characterized in that it is a cover device according to claim 6 or 7.

14. The second cover body is a single, integrated unit made from a single component. The cover device according to claim 6 or 7, characterized in that it is a cover device according to claim 6 or 7.

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