JPH08239968A - Elbow - Google Patents

Abstract

PURPOSE: To absorb the expansion and contraction of an eave gutter due to temperature difference by the deformation of a ring-shaped rubber packing and the rotation of an elbow, and to prevent damage by fitting the packing on the outer circumferential surface of a cylindrical body in the downstream-side connecting section of the elbow. CONSTITUTION: An upstream-side connecting section 2 and a downstream-side connecting section 3 are mounted on the upstream side and downstream side of an elbow 1 joining an upstream-side gutter and an inclined downstream-side gutter respectively, and a curved section 4 is formed to an intermediate section. A ring-shaped packing 7 consisting of a rubbery elastic body is set up onto the outer circumferential surface of the cylindrical body of the downstream-side connecting section 3. A slitty notched section is formed towards the upstream direction from a downstream-side end in the downstream-side connecting section 3. A projecting section, in which a root section is made approximately the same as the width of the notched section, is formed inside the packing 7, and inserted into the notched section. According to such a structure, the expansion and contraction of an eave gutter due to temperature difference are absorbed by the deformation of the packing 7 and the revolution of the elbow, thus preventing the damage of the eave gutter, etc.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to elbows. More specifically, the present invention relates to an elbow used for connecting eaves gutters, water collectors, drains, etc. to inclined gutters such as gutters and sluices.

[0002]

2. Description of the Related Art An elbow that is conventionally used to connect a drain attached to an eaves gutter and an inclined gutter such as a gutter or a calling gutter is disclosed in Japanese Utility Model Publication No. 63-48740. A cylinder with an upstream gutter connection that is connected to the drain at the upstream end, a downstream gutter connection that is connected to the gutter at the downstream end, and a curved bend formed in the middle part. It consists of the body. Further, there is an elbow in which the upstream side gutter connection portion has a shape substantially the same as that of the drain, and the upstream side gutter connection portion is directly connected to the eaves gutter.

Further, as an elbow for connecting a water collector attached to the eaves gutter and an inclined gutter such as a sluice gutter, as described in Japanese Utility Model Publication No. 56-22519, an elbow is installed at the upstream end. An elbow consisting of a cylinder provided with an upstream gutter connection part for connecting a water vessel, a downstream side connection part for connecting a gutter at the downstream end part, and a curved part formed with a curved part in the middle part. Are known. In this way, the elbow connects the upstream gutter connection to the eaves gutter and the water collectors and drains attached to the eaves gutter, and the downstream gutter connection is an inclined gutter such as a gutter and a sluice. It is connected to the eaves trough, the water collector, and the rainwater that falls from the drain is redirected at the curved portion in the middle to guide it to the slanted gutter or sluice.

[0004]

However, in such an elbow, the upstream end is firmly connected to the eaves trough, the water collector, the eaves gutter, and the like.
Since the downstream end is firmly connected to the gutter and the sluice, the elbow, the eaves gutter, the water collector, and the drain may be damaged due to the expansion and contraction of the eaves gutter caused by the temperature difference in the summer and winter. This will be described with reference to FIGS. 4 and 5. FIG.
The eaves gutter 101 is connected to the elbow 103 via the drain 102.
Of the elbow 103, the downstream connection of the elbow 103 is connected to the sluice gutter 104, and the sluice gutter 104 is connected to the downspout 105.

The eaves gutter 101 expands and contracts in the direction of the arrow along the eaves due to the temperature difference between summer and winter. Then, a force is exerted by which the calling gutter 104 tries to rotate about the vertical gutter 105. As a result, a force to rotate the elbow 103 acts on the connection portion between the elbow 103 and the drain 102, and as shown in FIG. 5, a crack 106 enters the elbow 103, the drain 102, and the like, and the elbow 103 and the drain 102. May be damaged. Therefore, an object of the present invention is to provide an elbow in which the elbow and drain are not damaged even when the eaves gutter repeatedly expands and contracts.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object. According to the invention of claim 1, the upstream side gutter connection portion is provided at the upstream side end portion, and the downstream side In an elbow made of a cylinder with a downstream gutter connection at the end and a curved bend in the middle, an elbow made of rubber-like elastic material on the outer peripheral surface of the cylinder at the downstream gutter connection. The packing of is attached.

The invention according to claim 2 is the elbow according to claim 1, wherein the downstream side gutter connection portion is provided with a notch cut in a slit shape from the downstream end toward the upstream direction, Inside the packing, there is provided a protrusion whose root width is almost equal to the width of the notch and whose tip width is suddenly increased through the step, and the root of this protrusion is the lower gutter connection part. The packing is attached to the outer peripheral surface of the downstream side gutter connection portion by being inserted into the cutout portion, the step portion of the protruding portion being in close contact with the inner peripheral surface of the lower gutter connection portion.

[0008]

The operation will be described while explaining the method of using the elbow according to the present invention. Connect the upstream gutter connection of the elbow with the eaves gutter, and the drain and water collector attached to this eaves gutter, and insert the downstream gutter connection into the gutter or the sluice. Connect with. Then, in the elbow of the present invention, a ring-shaped packing made of a rubber-like elastic body is attached to the outer peripheral surface of the cylindrical body of the downstream side gutter connection portion, so that the elbow is connected to the gutter or the calling gutter through this packing. To be done.

When the eaves gutter repeatedly expands and contracts due to the temperature difference between summer and winter, and a force is applied in a direction to rotate the elbow, the packing made of the rubber-like elastic body is deformed and the elbow rotates. . Since the elbow rotates in this way, no unreasonable force is applied to the elbow, eaves gutter, water collector, drain, etc.
Therefore, the eaves gutter etc. are not damaged. Further, since the packing is watertightly adhered between the outer peripheral surface of the downstream side connecting portion of the elbow and the inner peripheral surface of the gutter or the sluice, rainwater cannot leak from this portion.

Further, as described in claim 2, the downstream side gutter connecting portion is provided with a notch cut in a slit shape from the downstream end toward the upstream direction, and the width of the root portion is notched inside the packing. The width of the tip is substantially equal to the width of the projection, and the width of the tip is suddenly increased through the step, and the root of the projection is inserted into the notch of the lower gutter connection. When the step portion is closely attached to the inner peripheral surface of the lower gutter connection portion and the packing is attached to the outer peripheral surface of the downstream gutter connection portion, the packing is firmly attached to the elbow. Therefore, the packing does not move when the downstream end of the elbow is inserted into the end of the gutter or the gutter.

[0011]

Next, embodiments of the present invention will be described. 1 to 3 show an embodiment of the elbow according to the present invention. FIG. 1 is a perspective view of the elbow, FIG. 2 is a longitudinal sectional view showing a state in which a flume is connected to the elbow of FIG. 1, and FIG. FIG. 3 is a sectional view taken along line III-III in FIG.

1 to 3, 1 is an elbow,
This elbow 1 has an upstream gutter connection 2 having substantially the same shape as the drain provided at the upstream end, a downstream gutter connection 3 provided at the downstream end, and a curved portion curved at the center. 4 is a cylindrical body. The upstream side gutter connection portion 2 includes a threaded portion 6 at the upper end of the tubular body, and a locking tube 5 attached to the threaded portion 6.
Consists of The locking cylinder 5 includes a hemispherical dust net 51, a male screw 52 provided below the dust net 51, and a collar 53 provided between the dust net 51 and the male screw 52. . Further, the screw portion 6 includes a female screw 61 provided on the inner peripheral surface of the upper end portion of the tubular body, and a flange 62 provided on the upper end of the tubular body.

Then, the flange 62 of the screw portion 6 is brought into contact with the lower peripheral edge of the through hole provided in the eaves trough, and the male screw 52 of the locking cylinder 5 is attached.
The elbow 1 can be attached to the eaves trough by screwing the above into the female screw 61 of the screw part 6 from above the eaves trough and sandwiching the peripheral edge of the eaves trough with the flange 53 and the collar 62. It is like this. The downstream gutter connecting portion 3 refers to a lower end portion of a tubular body that connects a gutter and a sluice, and a ring-shaped packing 7 made of a rubber elastic body made of synthetic rubber is provided on an outer peripheral surface of the tubular body.

The mounting structure of the packing 7 will be described in more detail. As shown in FIG.
Is provided with a notch 31 cut in a slit shape from the lower end toward the upstream side, and the root 7 is provided inside the packing 7.
The width of 6 is almost equal to the width of the notch, and the width of the tip 77 is the step 7.
8 is provided with a protrusion 71 that is suddenly enlarged. Then, the base portion 76 of the packing 7 is inserted from the lower opening of the cutout portion 31, and the packing 7 is attached. Then, the stepped portion 78 comes into close contact with the inside of the lower gutter connecting portion 3 so that the packing 7 can be fixed to the lower gutter connecting portion 3. 8 is a gutter.

Next, a method of using the elbow 1 and its operation will be described. A through hole having a size for receiving the male screw 52 is provided in the drainage part of the eaves gutter. Next, an adhesive is applied to the upper and lower surfaces of the peripheral portion of the through hole of this eaves trough, and the collar portions 53, 62 are
Apply adhesive to the joint surface. Next, the collar portion 62 is brought into contact with the lower peripheral edge of the through hole of this eaves trough, and the male screw 5 of the locking cylinder 5 is attached.
2 through the through hole from the upper side of the eaves gutter
Then, the elbow 1 is attached to the eaves gutter by sandwiching the peripheral edge of the eaves gutter through the flange 53 and the flange 62. By doing this, the elbow 1 is firmly attached to the eaves gutter. Next, the downstream side gutter connection portion 3 of the elbow 1 is inserted into the upper end portion of the nominal gutter 8.

At the time of this insertion, the packing 7 attached to the outer peripheral surface of the tubular body of the downstream side gutter connecting portion 3 has the protruding portion 7
Since 1 is inserted in the notch 31, the packing 7 does not move. Further, the packing 7 is in close contact with the outer peripheral surface of the downstream side gutter connecting portion 3 and the inner peripheral surface of the nominal gutter 8 so that this portion is watertightly connected. With this connection, the eaves gutter repeatedly expands and contracts due to the temperature difference between summer and winter, and even if force is applied in the direction to rotate the elbow, this rubber-like packing deforms. The elbow rotates and the elbow and eaves gutter are not damaged.

[0017]

According to the first aspect of the present invention, since the ring-shaped packing made of a rubber-like elastic material is attached to the outer peripheral surface of the cylindrical body of the downstream side gutter connection portion, the eaves gutter due to the temperature difference between summer and winter. Even if the product repeatedly expands and contracts, the packing made of the rubber-like elastic body is only deformed to rotate the elbow, and the elbow, eaves gutter, water collector, drain, etc. are not damaged, which is a relief. Also, since the packing is watertightly adhered between the outer peripheral surface of the downstream side gutter connection portion of the elbow and the inner peripheral surface of the gutter or irrigation gutter, rainwater does not leak from this portion, which is safe.

Further, as described in claim 2, the downstream side gutter connecting portion is provided with a notch cut in a slit shape from the downstream end toward the upstream direction, and the width of the root portion is notched inside the packing. The width of the tip is substantially equal to the width of the projection, and the width of the tip is suddenly increased through the step, and the root of the projection is inserted into the notch of the lower gutter connection. If the step of is closely attached to the inner surface of the lower gutter connection and the packing is attached to the outer surface of the downstream gutter connection, the packing is firmly attached to the elbow and the downstream gutter connection is crawled. It is convenient because the packing does not move when it is inserted into the gutter or the gutter.

[Brief description of drawings]

FIG. 1 is a perspective view of an elbow according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view showing a state in which a flume is connected to the elbow shown in FIG.

3 is a sectional view taken along line III-III in FIG.

FIG. 4 is an explanatory view showing a usage state of a conventional elbow.

FIG. 5 is an explanatory diagram showing a state in which the elbow is cracked.

[Explanation of symbols]

 1 Elbow 2 Upstream side gutter connection part 3 Downstream side gutter connection part 31 Notch part 4 Curved part 7 Packing 71 Projection part 76 Root part 77 Tip 78 Step part 8 Nominal gutter

Claims (2)

[Claims] 1. An elbow comprising a tubular body having an upstream side gutter connection portion provided at an upstream side end portion, a downstream side gutter connection portion provided at a downstream side end portion, and a curved bending portion formed at an intermediate portion. In the elbow, the ring-shaped packing made of a rubber-like elastic body is attached to the outer peripheral surface of the cylindrical body of the downstream side gutter connection portion. 2. The elbow according to claim 1, wherein the downstream gutter connection portion is provided with a notch cut in a slit shape from the downstream end toward the upstream direction, and the width of the root portion is inside the packing. Is provided with a protrusion whose width of the tip is substantially equal to the width of the notch and which is suddenly increased through the step, and the root of this protrusion is inserted into the notch of the lower gutter connection,
An elbow characterized in that a step portion of the projecting portion is closely attached to an inner peripheral surface of the lower gutter connection portion and a packing is attached to an outer peripheral surface of the downstream gutter connection portion.