JP2009084928A - Eaves protection member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent rainwater from entering an eaves while efficiently guiding rainwater to the eaves and preventing damage to the eaves due to falling snow from the roof, as well as preventing formation of snow eaves and icicles Provide a heel protection member.
An eaves enclosure protection member 29A for protecting an eaves enclosure 28 from a snow lump falling from a sloped roof portion 21 of the building, the eaves enclosure protection member 29A of the present invention being a mounting plate fixed to the roof section 21. Part 30, an inclined plate part 31 extending from the edge of the eaves side of the mounting plate part 30 and disposed on the upper surface of the roof part 21 along the roof part 21, and extending from an eaves side edge of the inclined plate part 31; The curved portion 32 having a substantially arc-shaped cross section curved so as to return from the lower side to the building side, the inclined plate portion 31 and the curved portion 32 substantially cover the upper portion of the eaves wall 28, and the lower end portion of the curved portion 32 is The eaves end of the eaves ridge 28 is located on the building side from the end of the eaves ridge 28, the eaves end of the curved portion 32 is located slightly closer to the building side than the eaves end of the eaves ridge 28, and And the eaves side surface of the curved portion 32 are fixed to the roof portion 21 so as to be close to each other.
[Selection] Figure 4

Description

  The present invention relates to an eaves protection member for protecting an eaves from a snow mass falling from a roof.

  BACKGROUND ART Conventionally, an eaves protecting member that protects an eaves from a snow lump falling from a roof is known (see, for example, Patent Document 1).

  In FIG. 1, reference numeral 1 denotes a roof portion of a building. The roof portion 1 is a rafter 2 fixed to a pillar or beam of the building, a field board 3 laid on the upper part of the rafter 2, and an upper surface of the field board 3. The waterproof sheet 4 is laid on the waterproof sheet 4 and the slate 5 is laid on the upper part of the waterproof sheet 4.

  The end of the rafter 2 on the eaves side is covered with a nose cover part 6, and an eaves ceiling part 7 is provided between the lower end part of the nose cover part 6 and the eaves girder (not shown).

  On the eaves side of the nose cover 6, an eaves 8 is provided that guides the rain that has poured onto the roof 1 and the snow-melting water accumulated on the roof 1 to an eaves (not shown).

  In FIG. 1, reference numeral 9 denotes an eaves guard protecting member according to this conventional example, and the eaves guard protecting member 9 is formed by bending a steel plate so that the surface of the steel plate can smoothly slide down snow. It is processed into a smooth surface.

  The eaves guard member 9 includes an attachment part 10, an eaves plate part 11, a step part 12, and a protection plate part 13.

  The mounting portion 10 is sandwiched between the field board 3 and the slate 5 via the waterproof sheet 4, and is fixed to the field board 3 together with the slate 5.

  The eaves plate part 11 extends from the edge of the eaves side of the attachment part 10 toward the eaves side, and is placed on the upper surface of the eaves part of the field board 3 via the waterproof sheet 4.

  The step portion 12 extends from the eaves side edge of the eaves plate portion 11 substantially downward along the eaves side end surface of the field plate 3, and covers the eaves side end surface of the field plate 3.

  The protection plate portion 13 extends from the lower end edge of the step portion 12 toward the eaves side, and is inclined slightly steeply downward from the eaves plate portion 11. The front end portion of the protection plate portion 13 is on the building side. It is folded down to the side.

  The rain that has poured onto the roof portion 1 and the snow melting water that has accumulated on the roof portion 1 flows over the roof portion 1 toward the eaves portion, passes through the upper surface of the eaves plate portion 11, and from the front end portion of the protective plate portion 13. It flows down and is guided to the eaves bowl 8 located substantially below the tip.

  Then, the rainwater and the snow-melted water guided to the eaves 8 are guided from the eaves 8 to the call (not shown) and the eaves (not shown) and drained from a drain outlet or the like.

Further, the snow accumulated on the roof portion 1 during snowfall gradually moves downward along the roof portion 1 to reach the eave portion of the roof portion 1 and smoothly slides on the upper surface of the eaves plate portion 11 having a smooth surface. It is guided to the protection plate part 13 and guided by the protection plate part 13 so as to avoid the eaves 8 and is dropped from the eaves side end of the eaves 8 to the eaves side.
JP 2000-248701 A

  By the way, as shown to Fig.2 (a), even if the snow S accumulates on the roof part 1, for example, when the temperature falls at night, even if the snow S accumulated on the upper part of the living part melts, the roof part 1 Since the heat from the living part of the building is difficult to be transmitted to the eaves portion, the snow S accumulated on the eaves portion remains unmelted, and the snow S accumulated on the eaves portion may freeze.

  As shown in FIG. 2 (b), in the eaves trap protection member 9 of the conventional example, when the snow mass F frozen at the eaves tip part slides down the roof part 1, compared with the snow sliding down from the relatively upper part of the roof part 1. Since the speed at which the snow mass F slides down is slow, the snow mass F falls almost directly from the protective plate portion 13, contacts the eaves 8, and may damage the eaves 8.

  In addition, in the eaves-protecting member 9 of the conventional example, as shown in FIG. 2 (c), when the amount of rain during the rain is large, most of the rainwater is ejected out of the eaves 8 by the protective plate portion 13, There was a problem of spilling outside the eaves 8.

  In addition, in the eaves shield protecting member 9 of the conventional example, after raining, rainwater and snowmelt water adhering to the protection plate portion 13 accumulates at the front end portion of the protection plate portion 13 due to the surface tension of the water, and the temperature decreases. There was a possibility that the accumulated water would freeze and the frozen water would become the core and the ice would grow downward to form icicles.

  Furthermore, in the conventional eaves protection member 9, as shown in FIG. 1, the upper part of the eaves 8 is open to receive rainwater and snowmelt, so that garbage such as leaves is carried by the wind. There was a problem that it entered the jar 8 and this trash was carried along with the drainage and clogged the drainage port.

  Therefore, the present invention efficiently guides rainwater to the eaves while preventing ingress of garbage into the eaves and prevents damage to the eaves due to falling snow from the roof. An object of the present invention is to provide an eaves protection member to prevent.

  In order to achieve the above object, the invention described in claim 1 is an eaves protection member that protects an eaves from a snow mass falling from an inclined roof of a building, and an attachment portion fixed to the roof; An inclined plate portion extending from the edge of the eaves side of the attachment portion and disposed on the upper surface of the roof along the roof, and extending from an edge of the eaves side of the inclined plate portion and returning from the lower side to the building side A curved portion having a substantially arc shape in cross section, and the inclined plate portion and the curved portion substantially cover an upper portion of the eaves ridge, and a lower end portion of the curved portion is an eave end side end of the eave ridge The eaves side end of the curved part is positioned slightly closer to the building side than the eaves side end of the eaves and the eaves side end of the eaves and the curved part It is characterized by an eaves guard protecting member fixed to the roof so that the eaves side surface is in close proximity.

  According to a second aspect of the present invention, there is provided an eaves protection member according to the first aspect in which a snow melting heater portion is provided on the inclined plate portion.

  Further, the invention described in claim 3 is characterized by the eaves guard member according to claim 1 or 2, wherein an ice column prevention heater is provided in the curved portion.

  Since the inclined plate portion and the curved portion substantially cover the upper part of the eaves, the snow mass and the ice mass slide down from the roof portion. Snow blocks and ice blocks that have slipped down from the roof slide on the surface of the inclined plate and curved surface and fall to the eaves side of the eaves without contacting the eaves. The eaves are not damaged by the lump or ice lump.

  In addition, since the lower end of the curved portion is located on the building side from the end of the eaves side of the eaves, the rainwater and the snowmelt that flows into the eaves protection member of the present invention has the upper surface of the bent portion on the eaves side. It flows down, flows along the surface of the curved portion by the Coanda effect, flows down from the lower end of the curved portion into the eaves, and is smoothly drained through a call or a hook.

  The Coanda effect is an effect in which the fluid flowing along the vicinity of the surface of the convex body is attracted to the surface of the convex body by the negative pressure generated between the surface of the convex body and the fluid flow velocity. It is known that the faster the fluid is, the greater the effect that the fluid is attracted to the surface of the convex body.

  And since the edge of the eaves side of the eaves is located slightly closer to the building side than the eaves end of the eaves, the amount of rain is small and the effect of attracting water to the surface of the bend by the Coanda effect is small. However, rainwater or snowmelt flowing along the surface of the curved portion is efficiently guided into the eaves without spilling out of the eaves.

  In addition, the inclined plate part and the curved part almost cover the upper part of the eaves, and the eaves side end of the eaves and the surface of the eaves side of the eaves are close to each other. In addition to avoiding clogging of garbage such as drains, the maintenance frequency of dredging and drains can be reduced.

  And since what is described in Claim 2 is provided with the snow melting heater part in the inclination board part, the snow of the upper part of an inclination board part is melted, and the rain water and snow melting water adhering to the upper part of an inclination board part freeze. Therefore, it is possible to smoothly slide down snow on the upper part of the roof by preventing icing and snow on the edge of the roof.

  Moreover, since the thing described in Claim 3 is provided with the ice column prevention heater at the eaves side end part of the bending part, it is possible to prevent rainwater and snow melting water adhering to the eaves side end part of the bending part from freezing. It can prevent and it can suppress that an ice pillar is formed in the eaves edge side edge part of a curved part.

  Hereinafter, embodiments according to the present invention will be described based on examples.

<Constitution>
In FIG. 4, reference numeral 21 denotes a roof portion of a building. The roof portion 21 includes a rafter 22 fixed to a pillar or beam of the building, a field board 23 laid on the upper part of the rafter 22, and a field board 23. The waterproof sheet 24 is laid on the upper surface side, and the slate 25 is laid on the waterproof sheet 24.

  The eaves side end of the rafter 22 is covered with a nose cover part 26, and an eaves ceiling part 27 is provided between the nose cover part 26 and the eaves girder (not shown).

  On the eaves side of the nose cover part 26, an eaves wall 28 is provided that guides rainwater that has poured onto the roof part 21 and snow melting water that has accumulated on the roof part 21 to the call.

  In FIG. 3 or FIG. 4, reference numeral 29 </ b> A is an eaves protection member of the present embodiment, and is formed by extrusion from an aluminum material. It is also possible to bend the aluminum plate.

  As shown in FIG. 5 or FIG. 6, the eaves guard member 29 </ b> A includes an attachment plate portion 30, an inclined plate portion 31, a curved portion 32, and a guide plate portion 33.

  The mounting plate portion 30 is sandwiched between the field plate 23 and the slate 25 shown in FIG. 4 via a waterproof sheet 24, and is fixed to the field plate 23 together with the slate 25.

  The inclined plate portion 31 extends from the edge of the mounting plate portion 30 toward the eaves side, and is placed on the upper surface of the eaves portion of the base plate 23 via a waterproof sheet 24 as shown in FIG. Yes.

  When attaching the eaves protection member 29A to the roof portion 21, the inclined plate portion 31 and the curved portion 32 substantially cover the upper portion of the eaves rod 28, and the lower end portion of the curved portion 32 is connected to the eaves side end of the eave rod 28. Located on the building side of the building.

  Further, the eaves side end of the curved part 32 is positioned slightly closer to the building side than the eaves side end of the eaves wall 28 so that the eaves side end part of the eaves wall 28 and the eaves side surface of the curved part 32 are close to each other. The eaves guard member 29 </ b> A is attached to the roof portion 21 by adjusting the position.

  The upper surface of the inclined plate portion 31 according to the present embodiment has a large number of pores (the diameter of the pore is on the order of μm (micron)) so that water attached to the surface of the inclined plate portion 31 is less likely to freeze. Is formed. It is known that the water adsorbed in these pores has a freezing point due to the surface tension of the water.

  As shown in FIG. 6, the curved portion 32 extends from the edge of the inclined plate portion 31 toward the eaves side and curves so as to return from the lower side to the building side, and the cross section has a central angle of about 120 °. It has a substantially arc shape. The curvature radius R of the curved portion 32 according to the present embodiment is about 10 to 20 mm.

  This radius of curvature R is experimentally derived for the eaves of a standard building, and the curvature for allowing rainwater and snowmelt to be guided to the lower end of the curved portion 32 most efficiently by the Coanda effect. It is a radius.

  The Coanda effect is an effect in which the fluid flowing along the vicinity of the surface of the convex body is attracted to the surface of the convex body by the negative pressure generated between the surface of the convex body and the fluid. It is a phenomenon that is said.

  The guide plate portion 33 includes a flat plate portion 33a that extends from the lower end edge of the curved portion 32 toward the building, and a flange portion 33b that extends vertically downward from the lower end edge of the flat plate portion 33a.

<Function and effect>
As shown in FIG. 7 (a), snow S accumulates on the roof 21. For example, when the temperature falls at night, heat from the living part is transmitted to the roof 21 at the upper part of the living part of the building. Since the heat from the living part of the building is not easily transmitted to the eaves part of the roof part 21, even if the snow S accumulated on the upper part of the living part melts, the snow S accumulated on the eaves part remains unmelted. The snow S accumulated on the part may freeze.

  For example, when the snow mass F formed in this way slides down from the roof portion 21 as shown in FIG. 7B, the eaves shield protection member 29A of this embodiment includes the inclined plate portion 31 and the curved portion 32. Almost covers the upper part of the eaves wall 28, so that the snow mass F sliding down from the roof part 21 slides on the surface of the inclined plate part 31 and the surface of the curved part 32 without contacting the eaves wall 28. Since it falls to the eaves end side of the eaves wall 28, the eaves wall 28 is not damaged by the snow mass F sliding down from the roof portion 21.

  Moreover, as shown in FIG.7 (c), the rain water and the snowmelt water which flowed into the eaves shield protection member 29A of a present Example flow down to the eaves tip side on the upper surface of the curved part 32, and the curved part 32 is caused by the Coanda effect Along the surface of the curved portion 32, flows down from the lower end of the curved portion 32 to the inside of the eaves wall 28, and is smoothly drained through a call or a hook.

  The Coanda effect is an effect in which the fluid flowing along the vicinity of the surface of the convex body is attracted to the surface of the convex body by the negative pressure generated between the surface of the convex body and the fluid flow velocity. It is known that the faster the fluid is, the greater the effect that the fluid is attracted to the surface of the convex body.

  As shown in FIG. 7C, the eaves side end of the curved part 32 is located slightly closer to the building side than the eaves side end of the eaves wall 28. Even when the pulling effect is small, rainwater or snowmelt water flowing along the surface of the curved portion 32 is efficiently guided into the eaves wall 28 without spilling out of the eaves wall 28.

  Further, the inclined plate portion 31 and the curved portion 32 substantially cover the upper part of the eaves bowl 28, and the eaves side end of the eave bowl 28 and the eaves side surface of the curved part 32 are close to each other. There is not enough space for garbage to enter the eaves wall 28, and it is possible not only to prevent garbage such as leaves from entering the eaves wall 28, but also to avoid clogging of garbage such as drainage outlets. The frequency of maintenance such as can be reduced.

  In addition, the eaves guard member 29A of this embodiment is an easy-to-manufacture because it is an integrally formed product formed by bending an aluminum plate.

  Furthermore, since the eaves shield protecting member 29A of this embodiment is simply attached to the base plate 23 together with the slate 25 by sandwiching the mounting plate 30 between the base plate 23 and the slate 25, it can be attached easily. .

  In addition, a large number of pores are formed on the upper surface of the inclined plate portion 31 according to the present embodiment, and the freezing point of the water adhering to the surface of the inclined plate portion 31 is lowered so that it is difficult to freeze. Freezing of water at the end of the eaves side of the portion 21 is prevented, and snow on the upper portion of the roof portion 21 can be smoothly slid down.

  The diameter of the pores is on the order of μm (microns), and it is known that the water adsorbed in these pores has a freezing point due to the surface tension of the water.

  Hereinafter, the second embodiment will be described with a focus on the differences from the first embodiment, and the description of the same or equivalent parts as the first embodiment will be omitted. In addition, the code | symbol of drawing shall attach | subject the same code | symbol about the same thru | or equivalent part as Example 1. FIG.

  In FIG. 8, reference numeral 29 </ b> B is an eaves protecting member of the present embodiment.

  As shown in FIG. 9 or FIG. 10, the eaves guard member 29B of the present embodiment has a snow melting heater H1 on the back side of the inclined plate portion 31, and an ice column prevention heater H2 on the back side of the curved portion 32. And are provided.

  A pair of flange portions 31a and 31a for attaching the lid L1 of the ceramic heater S1 are provided on the back side of the inclined plate portion 31, and a lid L2 for attaching the ceramic heater S2 is provided on the back side of the curved portion 32. A pair of flange portions 32a and 32a are provided.

  The flange portions 31a and 31a and the flange portions 32a and 32a are erected in parallel from the back surface side of the eaves guard member 29B.

  The lids L1 and L2 have a substantially U-shaped longitudinal cross-sectional shape, and the flange portions F1 and F2 are respectively fitted to the flange portions 32a and 32b of the eaves guard member 29B.

  Heat insulating materials C1 and C2 are provided on the back side of the lids L1 and L2, respectively, and the ceramic heaters S1 and S2 are respectively on the back side of the eaves protection member 29B and the eaves protection member 29B and the lids L1 and L2, respectively. And is held between.

  And when attaching the eaves protection member 29B to the roof part 21, as shown in FIG. 8, the heat insulating material I is attached to the building side of the heater parts H1 and H2, and the heat of the ceramic heaters S1 and S2 is below the eaves. The heat is efficiently transferred to the surface side of the eaves guard member 29B.

  The ceramic heaters S1 and S2 used in this embodiment are ceramic heaters composed of oxide semiconductors, and have a positive temperature coefficient while being semiconductors, and suddenly when the heater temperature reaches a certain temperature. A so-called temperature self-adjustment function that maintains the constant temperature by automatically adjusting the amount of heat generated by the heater itself according to the ambient temperature without having to control the supplied power using a separate control device. have.

<Function and effect>
As shown in FIG. 11A, since the snow melting heater portion H1 is provided on the inclined plate portion 31, the snow on the upper portion of the inclined plate portion 31 is melted, and rainwater adhering to the upper portion of the inclined plate portion 31 Since snow melting water can be prevented from icing, by preventing icing at the end of the eaves side of the roof part 21, snow on the upper part of the roof part 21 can be smoothly slid down.

  As shown in FIG. 11 (b), since the ice column preventing heater H2 is provided at the eaves end of the bending portion 32, rainwater and snowmelt attached to the eaves end of the bending portion 32 are prevented. It is possible to prevent icing and to suppress the formation of icicles at the end portion of the curved portion 32 on the eaves side.

  Furthermore, the ceramic heaters S1 and S2 constituting the heater portions H1 and H2 of this embodiment have a temperature self-adjusting function that automatically adjusts the amount of heat generated according to the ambient temperature and maintains a constant temperature. Not only does the power supply need not be separately controlled using a control device, but the ceramic heaters S1 and S2 are not overheated, which is safe.

[Modification]
In FIG. 12, reference numeral 29 </ b> C represents a modified eaves protecting member.

  As shown in FIG. 12, a rectifying portion R is provided on the surface side of the mounting plate portion 30 in the eaves guard member 29 </ b> C of this modification.

  The rectifying section R is formed with a number of jagged grooves perpendicular to the eaves direction. When rainwater or snowmelt flows into the rectifying section R, the flow rate of the flowing water is suppressed, and the rectifying section R is not suitable depending on the flowing position. Average the uniform water flow rate to rectify the water flow.

  Although the best embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes that do not depart from the gist of the present invention are not limited to this embodiment. Included in the invention.

  In addition, in Example 2, although both the snow melting heater part H1 and the ice column prevention heater part H2 were provided, only one of the heater parts H1 and H2 may be provided.

  Further, the eaves guard member 29A provided with the heater of Example 1 and the eaves guard member 29B provided with the heater portions H1 and H2 of Example 2 may be used in combination.

  In addition, the eaves guard member 29B according to the second embodiment can be used without attaching the heater portions H1 and H2.

It is sectional drawing of the eaves part of the building which concerns on a prior art example. It is sectional drawing of the eaves front part of the building which concerns on a prior art example, and is a figure for demonstrating the problem of the eaves guard member of a prior art example. (A) shows a state where snow is piled up on the eaves part of the roof, (b) shows a state in which a lump of snow falls almost directly below and damages the eaves, and (c) shows rain. When the amount of rain during the time is large, most of the rainwater is ejected by the protection plate portion of the eaves protection member and spills out of the eaves. It is a partial fracture perspective view of the eaves tip part of the building concerning the present invention. It is sectional drawing which looked at the eaves part of the building which concerns on Example 1 from the A arrow direction of FIG. It is the perspective view of the eaves end cover member which concerns on Example 1, (a) is the figure seen from the eaves side, (b) is the figure seen from the building side. 2 is a cross-sectional view of an eaves edge cover member according to Embodiment 1. FIG. It is sectional drawing of the eaves front part of the building which concerns on Example 1, and is sectional drawing for demonstrating the effect of the eaves guard member of Example 1. FIG. (A) shows a state where snow has accumulated on the eaves part of the roof part, (b) shows a state in which a lump of snow falls to the eaves side of the eaves, and (c) shows a large amount of rain during the rain. Sometimes, rainwater is guided to the eaves by the Coanda effect by the curved portion of the eaves protection member. It is sectional drawing which looked at the eaves part of the building which concerns on Example 2 from the A arrow direction of FIG. It is the perspective view of the eaves edge cover member which concerns on Example 2, (a) is the figure seen from the eaves side, (b) is the figure seen from the building side. 6 is a cross-sectional view of an eaves tip cover member according to Embodiment 2. FIG. It is sectional drawing of the eaves front part of the building which concerns on Example 2, and is sectional drawing for demonstrating the effect of the eaves guard member of Example 2. FIG. (A) shows how the snow piled up on the eaves part of the roof is melted by the snow melting heater part, and the snow melt is guided to the eaves by the Coanda effect by the curved part of the eaves protection member. (B) shows a state in which rain water and snow melting water adhering to the edge of the eaves side of the curved portion are prevented from freezing by the ice column preventing heater unit, and the formation of ice columns is prevented. It is a perspective view of the eaves edge cover member of the modification which concerns on Example 2, (a) is the figure seen from the eaves edge side, (b) is the figure seen from the building side.

Explanation of symbols

21 Roof (roof)
28 eaves eaves 29A, 29B, 29C eaves eaves protection member 30 attachment plate (attachment part)
31 Inclined plate part 32 Curved part H1 Snow melting heater part H2 Ice column prevention heater part F Snow mass

Claims (3)

An eaves protection member that protects the eaves from snow blocks falling from the inclined roof of the building,
A mounting portion fixed to the roof;
An inclined plate portion extending from the edge of the eaves side of the attachment portion and disposed along the roof on the upper surface of the roof;
A curved portion having a substantially arc-shaped cross section that extends from the edge of the eaves side of the inclined plate portion and is curved so as to return from the lower side to the building side;
Composed by
The inclined plate portion and the curved portion substantially cover the upper portion of the eaves ridge, and the lower end portion of the curved portion is located on the building side from the eaves end side end portion of the eave ridge,
The eaves side end of the curved part is positioned slightly closer to the building side than the eaves side end of the eaves so that the eaves side end of the eaves and the eaves side surface of the curved part are close to each other. An eaves protection member, which is fixed to the roof.   The eaves guard member according to claim 1, wherein a snow melting heater portion is provided on the inclined plate portion.   The eaves bowl protection member according to claim 1 or 2, wherein an ice column prevention heater is provided in the curved portion.