Snow cornice formation prevention device

Abstract

To provide a snow cornice formation prevention device which can be installed at an edge part of a roof which is formed as a down gradient, without drilling a hole on the roof using nails, wood screws, machine screws and the like.SOLUTION: A snow cornice formation prevention device 1 which is installed at an edge part of a roof R of a building and which prevents formation of snow cornice includes: a plurality of pinching fixing leg parts 2 pinched and fixed with respect to a plurality of seams H provided in parallel with each other along the gradient direction on a leeward side edge part of the roof R formed as a down gradient toward the leeward side; a body fixing base part 3 installed at an upper part of each pinching fixing leg part 2 and provided with a gap where rainwater can flow, at a lower part; and a snow cornice prevention body part 4 fixed to an upper part of the body fixing base part 3.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a snow cornice prevention device that is installed on the edge of a roof of a building to prevent the occurrence of snow cornices. [Background technology]

[0002] In snowy regions, when the wind blows during snowfall, a snow cornice forms on the lee side of the roof, protruding beyond the structure. Specifically, the wind blowing over the roof slows down on the lee side of the structure and turns into a vortex that rolls downward, and the snow carried by the wind adheres to the previously accumulated snow, creating a snow cornice.

[0003] If this snow cornice continues to grow, it will put pressure on walls and glass windows, destroying buildings. If it grows even larger, it will not be able to support its own weight and will break at the base and fall. Snow cornices are very heavy blocks of snow and ice, and if they fall onto roads, they can injure pedestrians and damage cars, creating a great danger.

[0004] In order to prevent the formation of snow cornices, snow cornice prevention members that are installed like a wall on the leeward side of a roof have been proposed.

[0005] However, conventional snow cornice prevention members are fixed by applying waterproof tape or sealant to the roof surface, and then placing the member on top of that and fixing it to the roof base with nails, wood screws, screws, etc., which requires drilling holes through the waterproof tape, galvanized iron, etc. For this reason, when the waterproof tape or sealant deteriorates due to ultraviolet rays, etc., rainwater or melting snow seeps into the room through the holes, corroding the base and causing major damage to the building and requiring large repair costs.

[0006] In response to such problems, the inventors of the present application have previously proposed an invention relating to a snow cornice prevention member that can be fixed without drilling holes in the roof.

[0007] For example, Japanese Patent Laid-Open Publication No. 6-346633 proposes a snow cornice prevention member that has a locking part for locking onto a gutter (gutter bar) provided on the outdoor side of the outer edge of the roof on the underside of the roof, and a clamping metal fitting that can be clamped to the roof seam, and that can be fixed to the roof by the locking part and the clamping metal fitting (Patent Document 1). Also, Japanese Patent Laid-Open Publication No. 2011-157718 proposes a snow cornice prevention member that is clamped and fixed to the roof by a mounting metal fitting and a movable mounting metal fitting on the coping part that is erected along the edge of the roof (Patent Document 2). [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Japanese Patent Application Publication No. 6-346633 [Patent Document 2] JP 2011-157718 A Summary of the Invention [Problem to be solved by the invention]

[0009] However, the invention described in Patent Document 1, which includes a snow cornice prevention device that is fixed with conventional nails or wood screws, has the problem that the snow cornice prevention device cannot be installed on the edge of a roof that is formed with a downward slope.

[0010] In other words, with conventional snow cornice prevention devices that are fixed with nails or wood screws, and with the invention described in Patent Document 1, there is no gap between the snow cornice prevention device and the roof, and when installed on the edge of a downward-sloping roof, rainwater, melted snow, etc. are blocked, resulting in the problem of leaks (meltwater from melted snow on the roof entering the room).

[0011] The direction in which snow cornices form varies depending on the region in which a building is constructed, the natural environment, surrounding structures, etc., and the leeward side is not necessarily an upward slope. For this reason, conventional snow cornice prevention materials could not be installed in cases where the edge of a downward-sloping roof is on the leeward side.

[0012] In addition, the invention described in Patent Document 2 cannot be installed on a roof without a coping. Although it is possible to install copings on an existing sloped roof through renovation, this is not realistic due to the high cost of renovation work.

[0013] The present invention has been made to solve the above-mentioned problems, and aims to provide a snow cornice prevention device that can be installed on the edge of a roof that slopes downward without drilling holes in the roof with nails, wood screws, bolts, etc. [Means for solving the problem]

[0014] The snow cornice prevention device of the present invention is a snow cornice prevention device that is installed on the edge of a roof of a building to prevent the formation of snow cornices, in order to solve the problem of being able to install it on the edge of a roof that is formed with a downward slope without drilling holes in the roof with nails, wood screws, screws, etc., and has a number of clamping and fixing legs that are clamped and fixed to a number of seams that are arranged parallel to each other along the gradient direction at the leeward edge of the roof that is formed with a downward slope toward the leeward side, a main body fixing base part that is erected on the top of each of the clamping and fixing legs and has gaps below to allow rainwater to flow, and a snow cornice prevention main body part that is fixed to the top of the main body fixing base part.

[0015] In addition, as one aspect of the present invention, in order to solve the problem of preventing the formation of snow cornices from the gap between the roof and the base part for fixing the main body while allowing rainwater to flow away, a windbreak plate may be provided at the leeward edge of the underside of the base part for fixing the main body, which is suspended so as to cover the leeward side of each of the juxtaposed clamping and fixing legs and leave a gap between it and the roof surface to allow rainwater to flow away.

[0016] Furthermore, as one aspect of the present invention, in order to solve the problem of preventing damage to the snow cornice prevention main body due to the weight of snow and preventing snow cornices from occurring beyond the snow cornice prevention main body, the base part for fixing the main body has a base material that is fastened and fixed to the clamping fixing leg, and a main body fixing material with an angle adjustment function that fixes the snow cornice prevention main body, which is supported so as to be freely swingable in the gradient direction relative to the base material and is configured to be fixed at any angle. Effect of the Invention

[0017] According to the present invention, the roof can be installed on the edge of a roof that slopes downward without drilling holes in the roof using nails, wood screws, bolts, etc. [Brief description of the drawings]

[0018] [Figure 1] 1 is a perspective view showing an embodiment of a snow cornice prevention device according to the present invention installed on the edge of a roof that slopes downward; FIG. [Diagram 2] 1 is a cross-sectional view showing a snow cornice prevention device according to this embodiment installed on the edge of a roof that slopes downward. FIG. [Diagram 3] FIG. 4 is a perspective view showing a clamping and fixing leg portion in the present embodiment. [Figure 4] 3 is a cross-sectional view showing a base material and a windshield plate in the present embodiment. FIG. [Diagram 5] 1 is a cross-sectional view showing a main body fixing member with an angle adjustment function in this embodiment. FIG. [Figure 6] A cross-sectional view showing the snow cornice prevention main body in this embodiment. [Figure 7] 1 is a perspective view showing the state in which the clamping and fixing legs and the main body fixing base part in this embodiment are installed on the edge of a roof that is formed with a downward slope. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, an embodiment of a snow cornice formation prevention device according to the present invention will be described with reference to the drawings.

[0020] 1 and 2, the snow cornice formation prevention device 1 of this embodiment has a plurality of clamping and fixing legs 2 that are clamped and fixed to the seam H, a main body fixing base part 3 that is installed on the top of each clamping and fixing leg part 2, a snow cornice prevention main body part 4 that is fixed to the top of the main body fixing base part 3, and a windshield plate 5 that covers the leeward side of each clamping and fixing leg part 2. Each component will be described in detail below.

[0021] The clamping and fixing legs 2 serve as legs when the snow cornice prevention main body 4 is installed with a gap between it and the roof R, and in this embodiment, as shown in Figure 3, consists of a metal piece formed with a roughly U-shaped cross section that is open at the bottom, and has a pair of left and right clamping parts 21, a base fixing part 22 that connects the upper parts of each clamping part 21, and a fastening member 23 that is inserted between the clamping parts 21.

[0022] The pair of left and right clamping parts 21 are parts that clamp the seam H when fixing to the roof R without using screws or the like, and in this embodiment, are formed into a substantially rectangular plate shape, with their upper edges connected to each other by a base fixing part 22. Also, each lower edge has seam clamping claws 24 that are bent at a substantially right angle so that the end face faces inward.

[0023] The base fixing portion 22 is a part that connects the upper edges of the clamping portions 21 together and fastens and fixes the base portion 3 for fixing the main body, and in this embodiment, is formed in a roughly rectangular plate shape, and has two bolt holes 25 opened along the longitudinal direction for inserting bolts to fix the base portion 3 for fixing the main body.

[0024] In addition, the base fixing portion 22 is formed so that its width in the short direction is wider than the thickness of the seam H, and extends downward from both edges of the clamping portion 21, so that the clamping fixing leg portion 2 has a gap of a width that allows the seam H to be positioned between the lower edges of each clamping portion 21 when not receiving the fastening force from the fastening member 23.

[0025] The number of bolt holes 25 in the base fixing portion 22 is not limited to two, and may be appropriately selected depending on the size and weight of the snow cornice prevention main body 4, etc.

[0026] The fastening member 23 is a member for clamping the seam H by fastening it to shorten the distance between the lower edges of each of the pair of left and right clamping portions 21, and in this embodiment, is composed of two bolts inserted into each clamping portion 21 and nuts screwed onto the bolts.

[0027] The number of bolts or the like in the fastening members 23 is not limited to two, and may be appropriately selected depending on the size and strength of the clamping and fixing legs 2, the fastening force required for clamping, and the like.

[0028] In this embodiment, as shown in Figures 1 and 2, the clamping and fixing legs 2 are arranged in a line, two per seam H, and are clamped together, so that the main body fixing base part 3 can be stably supported by the multiple clamping and fixing legs 2.

[0029] The base part 3 for fixing the main body is erected on the top of multiple clamping and fixing legs 2 and is a part that fixes the snow cornice prevention main body part 4 to the upper part.In this embodiment, it has a base material 31 that is fastened and fixed to the clamping and fixing legs 2, and a main body fixing material 32 with an angle adjustment function that fixes the snow cornice prevention main body part 4.

[0030] The base material 31 is a portion that is fastened and fixed to the clamping fixed leg portion 2, and in this embodiment, is formed by bending a plate material as shown in Figures 2 and 4. The leeward side of the base material 31 is bent vertically upward, and the upper end portion thereof is further bent toward the leeward side.

[0031] The windward side of the base material 31 is bent vertically upward, and its upper end is bent downwind to prevent rain and wind from entering the main body fixing base part 3. The vertical surface is also formed with a female screw hole 33 for fixing a bolt in a state where the main body fixing member 32 with angle adjustment function is adjusted to an arbitrary angle.

[0032] The main body fixing material 32 with angle adjustment function is a member for fixing the snow cornice prevention main body 4 and for making it possible to adjust the installation angle of the snow cornice prevention main body 4, and in this embodiment, is supported so as to be freely swingable relative to the base material 31.

[0033] Specifically, as shown in Figures 2 and 5, the leeward side is folded in half downward, and the folded part on the leeward side of the base material 31 is inserted into the gap created by the bend. As a result, the angle-adjustable main body fixing member 32 is supported so as to be able to swing freely due to its springiness, with the leeward side of the base material 31 as its base end. The folded part also functions as the leeward locking receiving part 34 that receives the leeward locking part 451 of the snow cornice prevention main body 4.

[0034] The windward side of the angle-adjustable body fixing member 32 is bent in half downward to form the windward locking receiving portion 35. The tip of the member is bent vertically so as to be aligned with the windward vertical surface of the base material 31. The vertical surface has a long hole 36 that is long in the up-down direction at a position that communicates with the female screw hole 33 of the base material 31. This allows the angle of the angle-adjustable body fixing member 32 to be adjusted to an arbitrary angle relative to the base material 31, and the vertical surfaces to be fastened together with a bolt screwed into the female screw hole 33, thereby making it possible to fix the member at the adjusted angle.

[0035] The snow cornice prevention main body 4 is a part that is erected like a wall at the edge of the roof R to prevent the occurrence of snow cornices, and as shown in Figures 2 and 6, in this embodiment, it is formed in a box shape consisting of a leeward vertical plate 41 that is arranged on the leeward side, an inclined plate 42 that is formed with a downward slope from the top of the leeward vertical plate 41 towards the windward side to approximately the center position in the height direction, an upwind vertical plate 43 that is formed vertically downward from the inclined plate 42, and a bottom plate 44.

[0036] The inclination angle of the inclined plate 42 is not particularly limited, but it is preferable that it is inclined at about 45° to 80° from the horizontal plane. In this embodiment, it is composed of an upper inclined plate 42a that stands at about 75° to 80° from the horizontal plane, and a lower inclined plate 42b that is continuous below the upper inclined plate 42a and stands at about 45° to 60° from the horizontal plane.

[0037] Moreover, the snow cornice prevention main body 4 in this embodiment is provided with fastening means 45 for fastening to the main body fixing base 3. Specifically, as shown in Fig. 6, on the leeward side of the bottom plate 44, there is provided a leeward locking member 451 formed with a generally U-shaped cross section with an opening facing the windward side, a clamping bolt 452 extending from the windward vertical surface 43 toward the windward side, and a windward locking part 454 formed with a generally U-shaped cross section with an opening facing the leeward side, and a windward slide member 455 configured to be slidable by a nut 453 screwed onto the clamping bolt 452.

[0038] The windbreak plate 5 is a plate material for preventing snow cornices from forming toward the leeward side through the gap between the main body fixing base part 3 and the roof surface RF. In this embodiment, the windbreak plate 5 covers the leeward side of each of the parallel clamping fixing legs 2 and is suspended so as to leave a gap between it and the roof surface RF to allow rainwater to flow through.

[0039] 2 and 4, the windbreak plate 5 in this embodiment is formed with a U-shaped cross section, and its upper surface is screwed to the downwind edge of the lower surface of the main body fixing base part 3. The height of the windbreak plate 5 is not particularly limited, but in this embodiment, it is formed at a height such that the gap between it and the roof surface RF is approximately the same as the height of the seam H of the roof R.

[0040] Next, the operation of each component in the snow cornice formation prevention device 1 of this embodiment will be described together with a method of installing the snow cornice formation prevention device 1 on the roof R.

[0041] First, a plurality of clamping and fixing legs 2 are clamped and fixed to the seam H of the roof R, which is formed with a downward gradient (downward inclination) toward the leeward side. Specifically, the clamping and fixing legs 2 are arranged so that the seam H is clamped between a pair of left and right clamping parts 21, and are fastened with fastening members 23. This reduces the distance between the lower end edges of the clamping parts 21, and the clamping and fixing legs 2 can be clamped and fixed to the seam H without using screws or the like. In addition, the lower end edges of the clamping parts 21 in this embodiment are formed with seam clamping claws 24 that are bent inward, and the end faces of the seam clamping claws 24 grip the seam H with a surface, so that the seam can be firmly clamped and fixed.

[0042] In this embodiment, as shown in Figures 1, 2 and 7, the clamping and fixing legs 2 are installed in a row of two at approximately the same position from the leeward edge of the roof R for each of a number of seams H that are arranged parallel to each other along the gradient direction.

[0043] Next, the main body fixing base 3 is erected on the upper part of each clamping and fixing leg part 2. In this embodiment, the base material 31 to which the windshield plate 5 has been previously suspended and fixed is placed on the upper part of the clamping and fixing leg part 2, and then fastened and fixed with two bolts for each clamping and fixing leg part 2.

[0044] Next, the angle-adjustable main body fixing member 32 is placed on the base member 31. In this embodiment, as shown in Fig. 2, the angle-adjustable main body fixing member 32 is placed so that the folded leeward locking receiving portion 34 is inserted into the leeward bent portion of the base member 31. In this way, the angle-adjustable main body fixing member 32 is supported by the springiness of the base member 31 so as to be able to swing freely.

[0045] Furthermore, the angle of the body fixing member 32 with angle adjustment function is adjusted so that the installation surface on which the snow cornice prevention body 4 is installed is horizontal, and the bolt inserted through the long hole 36 on the windward side is fastened to the female screw hole 33 in the base material 31 to fix the body fixing member 32 with angle adjustment function at any angle. In this way, the clamping fixing leg 2 and the body fixing base 3 can be fixed to the roof R without drilling holes, as shown in Figure 7.

[0046] Next, the snow cornice prevention main body 4 is fixed to the upper part of the main body fixing base 3. In this embodiment, as shown in Fig. 2, the leeward locking receiving portion 34 of the main body fixing base 3 is locked to the opening of the leeward locking member 451 of the fastening means 45. Also, the windward locking receiving portion 35 of the main body fixing base 3 is locked to the opening of the windward locking portion 454 of the windward fastening member 45.

[0047] Then, the nut 453 screwed onto the clamping bolt 452 is threaded toward the downwind side, and the upwind slide member 455 is slid toward the downwind side. As a result, the snow cornice prevention main body 4 is fastened to the main body fixing base 3 by the fastening means 45, as shown in FIG.

[0048] The snow cornice prevention main body 4 installed on the edge of the roof R of the building in this manner is erected like a wall on the edge of the roof R of the building, and even when wind blows during snowfall, the snow cornice prevention main body 4 changes the direction of the wind blowing over the building upward using the inclined plate 42, and by increasing the wind speed, the position of vortices generated on the leeward side of the building is moved away from the wall surface of the building and the edge of the roof R, thereby preventing the formation of snow cornices.

[0049] Furthermore, if the vertical plate 41 of the snow cornice prevention main body 4 is inclined to the leeward side, snow on the roof R will push the snow cornice prevention main body 4 to the leeward side, making it more likely to be damaged by the weight of the snow. Conversely, if it is inclined to the windward side, snow may adhere to the vertical plate 41 and join with the snow accumulated on the roof R, causing a snow cornice. However, in this embodiment, the angle of the main body fixing material 32 with angle adjustment function is adjusted so that the installation surface is horizontal and the vertical plate 41 is vertical, so that damage due to the weight of snow caused by the inclination and snow adhesion to the vertical plate 41 can be prevented.

[0050] Furthermore, gaps that allow rainwater to flow are formed between the main body fixing base 3 and the roof surface RF, and between the windshield 5 and the roof surface RF, so that rainwater and melted snow flow down the downward slope of the roof R and are not blocked by the snow cornice prevention device 1. This prevents rainwater and the like from accumulating on the leeward edge of the roof R, making it possible to prevent leaks.

[0051] Furthermore, a windbreak plate 5 is installed so as to cover the leeward side of each clamping and fixing leg part 2, so that even if wind blows between the windbreak plate 5 and the roof surface RF during snowfall, only a small amount of snow passes through, preventing the occurrence of snow cornices.

[0052] In addition, the clamping and fixing leg 2 can be removed from the gable H by loosening the fastening member 23, allowing maintenance of the snow cornice prevention device 1, replacement of each part, disposal, etc. to be performed without leaving holes in the roof R.

[0053] According to the present embodiment as described above, the following advantageous effects can be obtained. 1. The snow cornice prevention main body 4 can be installed freely and detachably without drilling holes in the edge of the roof R of the building. 2. Gaps are formed between the base part 3 for fixing the main body and the roof surface RF, and between the windbreak plate 5 and the roof surface RF, allowing rainwater to drain away and preventing rainwater from accumulating, so the unit can be installed on the edge of the roof R that slopes downward to the leeward side. 3. The angle of the snow cornice prevention main body 4 can be adjusted, and the vertical plate 41 can be made vertical to prevent damage due to the weight of snow and snow from sticking to the vertical plate 41. 4. The windbreak plate 5 is installed so as to cover the leeward side of each clamping and fixing leg portion 2, so that snow cornices can be prevented from forming between the main body fixing base portion 3 and the roof surface RF.

[0054] The snow cornice prevention device according to the present invention is not limited to the above-mentioned embodiment, and can be modified as appropriate. For example, although each clamping and fixing leg 2 is fixed to all the seams H of the roof R, if it can stably support the snow cornice prevention main body 4 and the main body fixing base 3, it may be installed only on some of the seams H to simplify the installation process. [Explanation of symbols]

[0055] 1. Snow cornice prevention device 2 Clamping fixing leg 3 Base for fixing the main unit 4. Snow cornice prevention body 5 Windbreak plate R Roof RF Roof Surface H goby 21 Clamp 22 Base fixing part 23 Fastening members 24 Goby Clamping Claw 25 bolt holes 31 Base material 32 Body fixing material with angle adjustment function 33 Female thread hole 34 Downwind side locking part 35 Windward side locking part 36 long hole 41 Leeward vertical board 42 Inclined plate 42a Upper slope plate 42b Lower slope plate 43 Windward vertical board 44 Bottom plate 45 Fastening and fixing means 451 Downwind side locking member 452 Clamping bolt 453 Nut 454 Windward side locking part 455 Windward side slide member

Claims

1. A snow cornice prevention device that is installed on the edge of a roof of a building to prevent the occurrence of snow cornices, A plurality of clamping and fixing legs are clamped and fixed to a plurality of seams that are provided parallel to each other along the gradient direction at the leeward edge of the roof that is formed with a downward slope toward the leeward side; a base portion for fixing the main body, the base portion being installed on the upper portion of each of the clamping and fixing legs and having a gap below it through which rainwater can flow; A snow cornice prevention main body part fixed to an upper part of the main body fixing base part; The snow cornice occurrence prevention device has the following features.

2. The device for preventing snow cornice formation as described in claim 1 has a windbreak plate suspended at the leeward edge of the underside of the base portion for fixing the main body, covering the leeward side of each of the parallel clamping and fixing legs and leaving a gap between the roof surface to allow rainwater to flow.

3. The main body fixing base portion is A base material fastened to the clamping and fixing leg portion; A body fixing member with an angle adjustment function for fixing the snow cornice prevention body, which is supported on the base material so as to be swingable in the gradient direction and can be fixed at any angle; The snow cornice formation prevention device according to claim 1 .

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