JP3838728B2 - Bent joint - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bent joint.
[0002]
[Prior art]
In general, in order to receive rainwater that has fallen on a roof, an eaves in which an indoor side wall, an outdoor side wall, and a bottom plate are formed in a groove shape is attached below the roof. Therefore, it is necessary to bend the eaves at a substantially right angle at the protruding corner or the entering corner of the roof. Such places, usually in such a bend joint according to the real-Open 1-83833 Patent Gazette is attached.
[0003]
In this bent joint, the indoor side wall, the outdoor side wall, and the bottom plate are formed in a groove shape, and are bent at substantially right angles between the eaves connection portions at both ends of the groove shape and the eaves connection portions at both ends. A bent portion is provided, and the eaves are connected to eaves connecting portions provided at both ends. Then, the eaves can be attached almost at right angles. However, when the eaves are connected with such a bent joint, the eaves repeatedly expands and contracts due to temperature differences in summer and winter, and the pressure of this expansion and contraction concentrates on the bent part of the bent joint. The bent part may crack or bend.
[0004]
In order to solve such a problem, as described in Japanese Utility Model Laid-Open Nos. 58-14740, 59-196623, 3-117035, the direction from the entrance corner side of the bent portion to the exit corner direction is described. 2. Description of the Related Art A bent joint is known in which a notch portion that is notched and a standing wall that is erected along an edge of the notch portion are provided. In this bent joint, when the eaves expands and contracts due to temperature differences in summer and winter, the remaining part of the notch is thinned and easily deformed. It absorbs the expansion and contraction.
[0005]
[Problems to be solved by the invention]
However, if expansion and contraction are repeated frequently due to temperature differences in summer and winter, only the remaining part of the notch is often deformed, resulting in fatigue and cracking of the remaining part. The problem is that rainwater leaks due to cracks.
Therefore, an object of the present invention is a bent joint provided with a cutout portion cut out from the entrance corner side edge of the bent portion in the exit corner direction and a standing wall standing along the edge portion of the cutout portion. Therefore, it is to provide a bent joint that does not crack and does not break even if the eaves ridge is notched and expanded due to summer and winter temperature differences.
[0006]
[Means for Solving the Problems]
The present invention has been made to achieve the above object, wherein an indoor side wall, an outdoor side wall, and a bottom plate are formed in a groove shape, and eaves connection portions at both ends of the groove shape, and eaves at the both ends.樋 There is a bent part that is bent at a substantially right angle between the connecting parts, and this bent part has a notch part that is notched in the direction from the entrance corner side to the exit corner, and along the edge part of this notch part. in bending joint standing wall Metropolitan is provided erected Te, the eaves trough connecting portion has an inner circumferential surface is made into a shape which is brought into contact with the outer peripheral surface of the eaves gutter Rutotomoni bottom plate made flat, whereas, the bent portion In the vicinity, the bottom plate is curved so as to protrude downward from the bottom plate of the eaves bowl.
[0007]
(Function)
In the present invention, since the eaves connection portion is formed in such a shape that the inner peripheral surface is in contact with the outer periphery of the eaves, the end portion of the eave is inserted into this eaves connection portion, The surface can be brought into contact with the inner peripheral surface of the eaves connecting portion for connection.
[0008]
In addition, when the eaves are connected to the eaves connection as described above, the eaves are repeatedly expanded and contracted due to a temperature difference such as summer and winter, and the pressure of the expansion and contraction is concentrated on the bent portion. . However, in the present invention, since the bottom plate is curved downward from the bottom plate of the eaves wall in the vicinity of the bent portion, if a force that pushes or extends from both sides is applied to the bottom plate, the curvature of the curved bottom plate is easily obtained. The shape is easy to increase or decrease. Therefore, when the eaves is subjected to expansion and contraction pressure, the entire portion bent downward in the vicinity of the bent portion is easily deformed. In this way, since only a part is not deformed but the whole is deformed, the bent portion is not cracked or cracked.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, examples of the present invention will be described.
1 to 3 show an embodiment of the bent joint of the present invention. FIG. 1 (a) is an explanatory view showing a plane of the bent joint, and (b) shows a cross section taken along the line AA of (b). Explanatory drawing, (c) is an explanatory diagram showing a cross section along line B-B in (a), FIG. 2 (a) is an explanatory diagram showing the usage state of a bent joint, (b) is the main part of the C part of (a) FIG. 3B is an explanatory view showing a plane of (b), FIG. 3A is an explanatory view showing a state of deformation in the vicinity of the bent portion of the bent joint when the eaves is expanded, ) Is an explanatory view showing a state of deformation near the bent portion of the bent joint when the eaves shrinks.
[0010]
1 to 3, reference numeral 1 denotes a building, and reference numeral 11 denotes a roof made up of a building to which the building 1 is attached. Reference numeral 2 denotes an eave fence attached to the lower side of the roof 11. The eave fence 2 includes an outdoor side wall 21, an indoor side wall 22, and a bottom plate 23, and an outdoor side ear 24 is provided at the upper end of the outdoor side wall 21. The indoor side ear 25 is provided at the upper end of the indoor side wall 22. The eaves 2 is hung by an eaves hanger 3 attached to the eaves.
[0011]
Reference numeral 4 denotes a bent joint for an outgoing corner connecting the eave ridges 2 at the extended corner, and the bent joint 4 includes an eaves connecting portion 5 and a bent portion 6 as shown in FIG. The eaves connecting portion 5 is provided at both ends of the bent joint 4 and has a shape that comes into contact with the outer peripheral surface of the eaves 2. In other words, the eaves connection part 5 includes an outdoor wall 51 that contacts the outdoor side wall 21 of the eaves 2, an indoor wall 52 that contacts the indoor side wall 22 of the eaves 2, and a bottom plate 53 that contacts the bottom plate 23 of the eaves 2. Consists of. Furthermore, an outdoor side ear holding part 54 that fits the outdoor side ear 24 of the eaves 2 at the upper end of the outdoor wall 51, and an indoor side ear holding part 55 that fits the indoor side ear 25 of the eaves 2 at the upper end of the indoor wall 52. And are provided. The bottom plate 53 is a substantially flat plate-like body as shown in FIG.
[0012]
The bent portion 6 is provided between the eaves wall connecting portions 5 provided at both ends, and an outdoor wall 61 in which the outdoor wall 51 of the eaves wall connecting portion 5 is extended, The wall 52 is composed of an indoor wall 62, a bottom plate 63 from which the bottom plate 53 is extended, and an outdoor side ear holding part 64 from which the outdoor side ear holding part 54 is extended. The bottom plate 63 is curved so as to protrude downward as shown in FIG.
[0013]
Therefore, in the vicinity of the bent portion 6, the bottom plate 63 is curved downward from the bottom surfaces 23 and 53 of the eaves rod 2 and the eaves rod connection portion 5. Therefore, if force is applied to the bottom plate 63 from both sides, The curvature of the curved bottom plate 63 is easy to increase or decrease. The bent portion 6 is provided with a notch portion 7 cut out from the entrance corner side edge toward the exit corner direction, and a standing wall 8 standing along the edge portion of the notch portion 7.
[0014]
Next, the usage method and operation of this bent joint will be described.
The eaves hook 3 is attached to the eaves, and the eaves 2 is attached to the eaves hanger 3. A bent joint 4 is attached to the corner of the eaves 2.
[0015]
A method of attaching the bent joint 4 to the eaves 2 will be described in detail.
Apply an adhesive to the outer peripheral surface of the connecting end of the eaves ridge 2 and the inner peripheral surface of the eaves ridge connecting portion 5, put the end of the eaves ridge 2 into the eaves ridge connecting portion 5, The outdoor side wall 21, the indoor side wall 22, and the bottom plate 23 lie along the outdoor side wall 51, the indoor side wall 52, and the bottom wall 53 of the eaves connection part 5, respectively, the outdoor side ear 24 is the outdoor side ear holding part 54, and the indoor side ear 25 is indoors. The side ear holding part 55 is fitted, and the outer peripheral surface of the eaves rod 2 is brought into contact with the inner peripheral surface of the eaves rod connection portion 5 to be connected.
[0016]
When the eaves 2 is connected to the eaves connection part 5 in this way, the eaves 2 repeats expansion and contraction due to a temperature difference such as summer and winter, and this expansion and contraction pressure is applied. That is, when the eaves basket 2 expands in the summer, the outdoor ear 24 of the eave basket 2 is firmly locked to the eaves suspension 3 and the indoor ear 25 rests on the indoor ear holding part of the eave suspension 3. As shown by the dotted line in FIG. 2 (c), the eaves hook suspension 3 tilts in the protruding corner direction and pushes the bent portion 6 of the bent joint 4 from both sides.
[0017]
Then, the opening of the notch 7 is narrowed and pushed out more than the indoor wall 62 in the vicinity of the bent portion 6 and the outdoor wall 61 is pulled as shown in FIG. 3A, but the curvature of the curved bottom plate 63 is increased. Therefore, no excessive force is applied anywhere, and therefore no cracks occur. In the winter, when the eaves rod 2 contracts, on the contrary, as shown by the dotted line in FIG. 2 (c), the eaves rod lifting tool 3 is tilted away from the projected corner, and the bent portion 6 of the bent joint 4 is moved from both sides. Be pulled.
[0018]
Then, the opening of the notch 7 is expanded, and as shown in FIG. 3 (b), it is pulled more than the indoor wall 62 in the vicinity of the bent portion 6 and the outdoor wall 61 is pushed out, but the curvature of the curved bottom plate 63 is reduced. Since it extends close to a flat plate, no excessive force is applied anywhere, and therefore no cracks are generated.
[0019]
As described above, the bottom plate 63 is curved downward from the bottom surfaces 23 and 53 of the eaves 2 and the eaves connection part 5 in the vicinity of the bent portion 6, and this bending is applied to the bottom plate 63 when a force to push or extend from both sides is applied. Since the portion is further easily bent and stretched, when the eaves is subjected to expansion and contraction pressure, the entire portion bent downward near the bent portion 6 is deformed without difficulty. As described above, since only a part is not deformed and the whole is deformed, the bent portion 6 is not cracked or cracked.
[0020]
【The invention's effect】
In the present invention, the inner circumference of from eaves gutter connection is made in a shape whose inner peripheral surface is brought into contact with the outer peripheral surface of the eaves gutter Rutotomoni bottom plate is made flat, eaves gutters connecting portion an outer peripheral surface of the eaves gutter It can be connected by contacting the surface. In the present invention, since the bottom plate is curved downward from the bottom plate of the eaves in the vicinity of the bent portion, when the eaves expands and contracts, the entire curved portion in the vicinity of the bent portion is deformed without difficulty. Therefore, the bent portion is not cracked or cracked, and therefore, it can be used for a long period of time.
[Brief description of the drawings]
1A and 1B show an embodiment of a bent joint of the present invention, in which FIG. 1A is an explanatory view showing a plane of the bent joint, FIG. 1B is an explanatory view showing a cross section taken along line AA in FIG. (C) is explanatory drawing which shows the cross section in the BB line of (A).
FIGS. 2A and 2B are explanatory views showing the usage state of the bent joint, FIG. 2B is an explanatory view showing the main part of the C portion of FIG. 2A, and FIG. 2C is an explanatory view showing the plane of FIG. is there.
[Fig. 3] (A) is an explanatory view showing a state of deformation in the vicinity of the bent portion of the bent joint when the eave bar is expanded, and (B) is a deformation of the vicinity of the bent portion of the bent joint when the eave bar is contracted. It is explanatory drawing which shows a state.
[Explanation of symbols]
1 Building 11 Roof 2 Eaves 3 Eaves Suspension Equipment 4 Curved Joint 5 Eaves Connection 6 Curved Section 7 Notch 8 Vertical Wall

Claims (1)

An indoor side wall, an outdoor side wall, and a bottom plate are formed in a groove shape, and an eaves connection portion at both ends of the groove shape, and a bent portion that is bent at a substantially right angle between the eaves connection portions at both ends. In the bent joint provided with a notched part cut out in the bent corner direction from the entering corner side edge and a standing wall standing along the edge of the notched part,
The eaves gutter connecting portions the inner circumferential surface Rutotomoni bottom plate made in a shape that contacts is made flat on the outer peripheral surface of the eaves gutter, while the bottom plate by the bent portion near protrudes downward from the bottom plate of the eaves gutter A bent joint, characterized by being bent to a state.

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