JP3243681B2 - Bent joint - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bent joint used for connecting an eaves gutter at an eaves corner or an eaves corner of an eaves.

[0002]

2. Description of the Related Art As shown in FIGS. 5 and 6, a general bending joint of this type has a joint body 100 which is bent at a right angle, and which has insertion grooves 101 for eaves gutters at one end thereof. The other end of the member 102 is slidably fitted inside.

[0003] Such a bent joint is a joint member 102
Has the advantage that it can absorb the thermal expansion and contraction of the eaves gutter, but has the following disadvantages.

[0004]

That is, in the above-mentioned bent joint, the bottom surface 103 at the center corner of the joint body 100 is one step lower than the bottom surface 104 of both joint members 102.
There is a problem that rainwater accumulates on the bottom surface 103 of the central corner portion, and when looked down from the upper floor, the appearance is poor and the surface is dirty. In addition, when rainwater accumulates, water moss is generated, which causes the appearance to be further deteriorated, and further causes mosquitoes to be generated.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a bendable joint which has a good appearance and which cannot be seen from an upper floor even if rainwater accumulates at a central corner of the joint body. is there. And, it is desirable to provide a bent joint that can substantially prevent rainwater from accumulating in the central corner portion.

[0006]

In order to achieve the above object, the present invention slides the other end of a joint member having an eave gutter insertion groove formed at one end thereof at both ends of a joint body bent at a right angle. In the bent joint which is freely fitted inside, the both ends of the right-angled covering plate having substantially the same planar shape as the bottom shape of the joint body are placed on the bottom surface of the joint member so as not to hinder the sliding of the joint member. And the center corner of the right-angled covering plate is fixed to the center corner of the joint body.

Preferably, a rectangular frame is provided on the back surface of the central corner of the right-angled covering plate, and the rectangular frame is water-tightly bonded to the bottom surface of the central corner of the joint body.

[0008]

In the bent joint according to the present invention, since the bottom surface of the central corner of the joint body is covered with the right-angled covering plate, even if rainwater accumulates at the central corner, it is not visible from the upper floor. . Then, the bottom surface of the joint member is also covered with the right-angled covering plate so that the step is not visible, and the bottom surface of the bent joint looks as if it is flat, so that the appearance is greatly improved.

[0009] In particular, a bent joint in which a rectangular frame is provided on the back surface of the central corner portion of the right-angled covering plate and the rectangular frame is water-tightly bonded to the bottom surface of the central corner portion of the joint body, rainwater enters the rectangular frame. Since rainwater only accumulates in a small space around the outer periphery of the square frame at the central corner, accumulation of rainwater can be substantially prevented.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view showing an embodiment of a bent joint according to the present invention, FIG. 2 is a plan view of the embodiment, and FIG. 3 is a sectional view taken along the line ABC of FIG.

1 to 3, reference numeral 1 denotes a joint body formed of a synthetic resin such as polyvinyl chloride or the like, 2 denotes a joint member also formed of a synthetic resin, and 3 denotes a right-angle covering plate made of a synthetic resin.

The joint body 1 has a high front side wall 1b and a low rear side wall 1c along both sides of a bottom wall 1a bent at a right angle in the center.
The upper half portion of the front side wall 1b is curved and inclined rearward in order to give a sense of beauty and volume.
Then, a stepped portion 1d also serving as a drainer is formed on the front side wall 1b so that rainwater falling on the front side wall 1b is not transmitted to the bottom wall 1a. The front side wall 1b and the rear side wall 1c
At the upper edges of both ends, ear holding pieces 1e, 1f protruding inward.
Are formed below the ear holding pieces 1e and 1f.
Of the ears 2a and 2b.

The joint member 2 has an eaves gutter connection portion 20 at one end and a fitting portion 21 slidably fitted inside the joint body 1 at the other end. It has a cross-sectional shape substantially similar to the cross-sectional shape, and its size is reduced by the thickness of the joint body 1. And this fitting part 2
A groove is formed on the outer surface of the bottom wall 2c of the first and second side walls 2d and 2e, and the two waterproof packings 2f are bonded with an adhesive.
Water is stopped so that rainwater does not leak from the gap between the fitting portion 21 of the joint member 2 and both ends of the joint body 1, and the ears 2a, 2b are formed on the upper edges of the front and rear side walls 2d, 2e. ing.

On the other hand, the eaves gutter connecting portion 20 of the joint member 2
Is provided with an outer wall 2g having substantially the same cross-sectional shape as that of the joint body 1, and an eaves gutter insertion groove 2h is formed between the outer wall 2g and the bottom wall 2c and the front and rear side walls 2d and 2e. At the upper edges of the front and rear side walls of the outer wall 2g, ear holding pieces 2i and 2j into which ears of the eave gutter are fitted are formed to protrude inward. The width of the rear wall portion of the outer wall 2g is made larger than that of the front wall portion, and the low wall portion is correspondingly widened from the middle to form the eaves gutter insertion guide portion 2k. Connection is made easy. In addition, 2 m is a holding piece for holding the front side wall of the eaves gutter from the inside.

On the other hand, the right angle covering plate 3 has a plane shape substantially the same as the bottom shape of the joint body 1, and has a rectangular frame 3b on the back surface of the central corner 3a. The rectangular frame 3b has substantially the same height (step size) from the bottom surface of the joint body 1 to the bottom surface of the joint member 2, and is formed integrally with the back surface of the central corner portion 3a. Alternatively, a separately prepared square frame 3b may be bonded to the back surface of the central corner 3a with an adhesive. This right angle covering plate 3
Coated plate ends 3 so as not to hinder sliding of joint member 2
c, 3c are superimposed on the bottom surfaces of the two joint members 2, 2, and the rectangular frame 3b is fixed to the bottom surface of the central corner 1g of the joint body 1 with an adhesive in a watertight manner.

The length of the right-angled covering plate 3 is such that both ends of the covering plate are slightly inside the both ends of the bottom wall 1a of the joint body 1, or both ends of the covering plate are aligned with both ends of the bottom wall of the joint body 1. When the joint member 2 is slid outward due to shrinkage of the eaves gutter, the right-angled covering plate 3 and the bottom wall 2c of the joint member 2 remain overlapped. Therefore, the rainwater accumulated in the central corner portion 1g of the joint body 1 is not seen, and the step between the bottom wall 2c of the joint member 2 and the bottom wall 1a of the joint body 1 is not seen.
Good appearance can be maintained.

In the bent joint having the above structure, the bottom surface of the central corner 1g of the joint body 1 is covered with the right-angled covering plate 3, so that even if rainwater accumulates in the central corner 1g, it can be seen from the upper floor. In addition, the bottom surface of the joint member 2 is also covered with the right-angled covering plate 3 so that the step is not visible, and the bottom surface of the bent joint looks as if it is flat, so that the appearance is greatly improved. Moreover, since the rectangular frame 3b of the right-angled covering plate 3 is bonded to the bottom surface of the central corner 1g of the joint body 1 in a water-tight manner, rainwater does not infiltrate and accumulate in the rectangular frame 3b. Since rainwater only accumulates in a small space portion 4 of the outer peripheral portion, accumulation of rainwater can be substantially prevented.

In order to enhance the effect of preventing the accumulation of rainwater, it is desirable to form the rectangular frame 3b as large as possible within a range that does not hinder the sliding of the joint member 2, and to reduce the space 4 around the rectangular frame as much as possible. However, since this space 4 serves as a small running water of the rainwater remaining on the bottom of the eaves gutter, it is necessary to leave the space 4 to such an extent that the flow of the rainwater is not hindered. The small amount of rainwater flowing from the bottom of the eaves gutter can be obtained by making the width of the right-angled covering plate 3 slightly smaller than the width of the bottom surface of the joint body 1 so that the right-angled covering plate 3 and the front and rear side walls 1b of the joint body 1 are formed. , 1c.

In this bent joint, the end of the eaves gutter is placed on the insertion guide 2k of the joint member 2 and the rear wall of the eaves gutter is applied to the rear wall of the outer wall 2g of the joint member 2. ,
Since the end of the eaves gutter and the insertion groove 2h of the joint member 2 are positioned so as to face each other, it is possible to easily connect the eaves gutter as it is by inserting it into the insertion groove 2h. When the eaves gutter thermally expands and contracts, the two joint members 2 and 2 slide following the eaves gutter, so that the eaves gutter does not warp up due to the thermal expansion or contraction, and the eaves gutter does not bend and fall off from the joint.

In the above embodiment, the rectangular frame 3b is provided on the back surface of the central corner portion 3a of the right angle covering plate 3. However, instead of the rectangular frame 3b, a rectangular plate is adhered to the back surface of the central corner portion 3a. Alternatively, the thickness of the central corner portion 3a of the right-angle covering plate 3 may be increased by the height of the rectangular frame 3b. In addition, the square frame 3b of the right-angled covering plate 3 is
Instead of bonding to the bottom surface of the joint body 1, a support piece 1 h as shown by an imaginary line in FIG. 1 is formed on the front side wall 1 b and the rear side wall 1 c of the central corner 1 g of the joint main body 1 so as to protrude inward. The central corner 3a of the right-angled covering plate 3 may be bonded on the piece 1h. In this case, the right angle covering plate 3
The rectangular frame 3b becomes unnecessary. The right angle covering plate 3 is preferably attached to the joint body 1 in advance, but may be attached after connecting the eaves gutter in some cases.

FIG. 4 is a partial sectional view showing another embodiment of the bent joint according to the present invention, in which projections 1i projecting upward are formed at both ends of a bottom wall 1a of the joint body 1, and the joint is formed. Projecting pieces 2n projecting downward are formed on the bottom wall 2c on both sides of the waterproof packing 2f of the member 2. When the protrusion 1i and the protruding piece 2n are provided, the protrusion 1i and the protruding piece 2n are engaged when the joint member 2 slides outward due to the thermal shrinkage of the eaves gutter, and the joint member 2 is connected to the joint body 1 The joint member 2 has an advantage that it can be prevented from slipping out of the joint member 2, and the length of the right-angle covering plate 3 is adjusted so that the end of the right-angle covering plate 3 overlaps the bottom wall 2 c of the joint member 2 even when the joint member 2 slides to this engagement position. By setting the height, it is possible to surely make the pool of rainwater invisible.

Since other structures are the same as those of the above embodiment, the same reference numerals are given to the same members in FIG. 4, and the description will be omitted.

In each of the above-described embodiments, the outer curved joint for connecting the eave gutter at a right angle at the eaves corner of the eave is shown. The present invention is also applied to an inner curved joint which connects a gutter at a right angle.

[0025]

As is clear from the above description, the bent joint of the present invention is not visible from the upper floor even if rainwater accumulates at the central corner of the joint body, and the bottom surface of the bent joint is flat. Since it looks as if it is, it has the effect of greatly improving the appearance. In particular, a rectangular frame provided on the back surface of the central corner portion of the right-angled covering plate and bonded in a water-tight manner to the central corner portion of the joint body, in addition to the above-described effects, can substantially prevent rainwater from collecting, This has the effect of preventing the occurrence of moss and mosquitoes caused by accumulated rainwater.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing one embodiment of a bent joint of the present invention.

FIG. 2 is a plan view of the embodiment.

FIG. 3 is a sectional view taken along line ABC of FIG. 2;

FIG. 4 is a partial sectional view showing another embodiment of the bending joint of the present invention.

FIG. 5 is a plan view of a conventional bent joint.

FIG. 6 is a sectional view taken along line ABC of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Joint main body 1a Bottom wall 1b Front side wall 1c Rear side wall 1d Step part 1e, 1f Ear holding piece 1g Central corner part 1h Supporting piece 1i Projection 2 Joint member 20 One end side eave gutter connection part 21 The other end side fitting part 2a , 2b Ear part 2f Waterproof packing 2h Eave gutter insertion groove 2k Eave gutter insertion guide part 2n Projection piece 3 Right angle covering plate 3a Central corner part 3b Square frame 3c Both ends of right angle covering plate

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-142245 (JP, A) JP-A 4-98932 (JP, U) JP-A-63-81125 (JP, U) (58) Investigation Field (Int. Cl. ⁷ , DB name) E04D 13/068 502

Claims (2)

(57) [Claims] 1. A bent joint in which the other end of a joint member having an eaves gutter insertion groove formed on one end thereof is slidably fitted on both ends of a joint body bent at a right angle. Both ends of a right-angled covering plate having substantially the same planar shape as the bottom surface are overlapped on the bottom surface of the joint member so as not to hinder the sliding of the joint member. A curved joint fixed to the center corner of the joint body. 2. The bending according to claim 1, wherein a rectangular frame is provided on the back surface of the central corner portion of the right-angled covering plate, and the rectangular frame is water-tightly bonded to the bottom surface of the central corner portion of the joint body. Fittings.