JPH0430262Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an expansion joint for a gutter for absorbing expansion and contraction of the eaves gutter due to changes in temperature.

[Conventional technology]

Conventionally, as seen in Japanese Utility Model Publication No. 61-429, expansion joints for gutters have been developed by stacking the left side joint in a slidable manner on the inner circumferential wall of the right side joint in the width direction. Packing used for this purpose is a band plate made of foam rubber with a circular or square cross section, and
A tube-shaped one as seen in Publication No. 33765 is used.

[The problem that the idea aims to solve]

However, in cases where foamed rubber is used as packing material, the foaming gas escapes over time and the wall thickness becomes thinner, while in cases where tube-shaped packing is used, it becomes stable due to rolling around. As a result, the originally intended watertight function was reduced, and this was one of the causes of water leakage.

The present invention was devised to eliminate the drawbacks of the conventional products described above, and aims to provide an expansion joint for a gutter that does not deteriorate its watertight function over time.

[Means to solve the problem]

The present invention has been devised in view of the above, and the eaves gutter connection part is attached to one end of the right joint unit, which has an eave gutter connection part at one end, through packing along the width direction fixed to the inner circumferential wall surface at the other end. In an expansion joint for a gutter, the other end of the left side joint is slidably overlapped, and the packing is made of an unfoamed elastic material such as chloroprene, and two through holes are arranged in parallel in the longitudinal direction inside the joint. This expansion joint for a gutter is characterized in that it is a hollow band plate having a horizontally B-shaped cross section and having both ends of a through hole closed.

〔Example〕

Embodiments of the present invention shown in the drawings will be described in detail below. FIG. 1 is a sectional view showing an embodiment of the expansion joint for gutter of this invention, and FIGS. They are a perspective view and an enlarged sectional view. In the figure, A is a single right joint made of polyvinyl chloride, which has an eave gutter connection part 1 at one end and a packing fixing part 2 near the other end. B is a left-side joint unit that is slidably superimposed on the inner peripheral wall surface of the right-side joint unit A, and is made of polyvinyl chloride and connected to an eaves gutter at one end, similar to the right-side joint unit A. C is a packing interposed between the right side joint unit A and the left side joint unit B, and is made of an unfoamed elastic material such as chloroprene and is made of an elastic material such as chloroprene in the longitudinal direction. The through-holes 4 are arranged in two rows in parallel, and the upper surfaces of the through-holes 4 are each curved into an arc shape to form a hollow strip shape with a horizontal B-shape in cross section, and both ends of the through-holes 4 are open. The portion is closed with a sealing material 5 such as adhesive.

[Effect of idea]

As is clear from the above, the expansion joint for gutters of the present invention is made of a hollow band plate made of an unfoamed elastic material such as chloroprene and has a longitudinal through hole formed therein, which is fixed to the packing fixing part. Because it is made of a metal material, there is no wall thinning phenomenon or playback that occurs with conventional products over time, and since the through hole is hollow at both ends, it retains its shape over a long period of time. Provides an elastic effect,
In addition, by making the upper surface arc-shaped and the cross-section shaped like a horizontal B, the ease of attachment to the packing fixing part and the sliding performance of the left joint alone are further improved. Since there is almost no movement, watertightness can be maintained for a long period of time.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing one embodiment of the expansion joint for a gutter according to the present invention, and FIGS. 2 and 3 are a perspective view and an enlarged sectional view of packing, which is the same member. A...Single right joint, B...Single left joint, C
...Packing, 4...Through hole, 5...Sealing material.

Claims (1)

[Scope of utility model registration request] The other end of the right-hand side joint, which has an eaves gutter connection at one end.The other end of the left-hand side joint, which has an eaves gutter connection at one end, can slide freely through packing along the width direction fixed to the inner peripheral wall surface. In an expansion joint for a gutter, the packing is made of an unfoamed elastic material such as chloroprene, and has two through holes parallel to each other along the longitudinal direction inside, and both ends of the through holes are closed, so that the cross section is horizontal. A gutter expansion joint characterized by a B-shaped hollow band plate.