JPS6110076Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention is an adapter for corrugated pipe fittings,
In particular, the present invention relates to a corrugated pipe joint adapter for connecting a small-diameter corrugated pipe used as a branch pipe to a large-diameter straight pipe used as a water collection pipe.

[Conventional technology]

Conventionally, different diameter joints are usually used to connect small diameter corrugated pipes used as branch pipes such as underdrain drainage pipes to large diameter straight pipes for the purpose of collecting water. Since the diameter is naturally limited, a corrugated pipe must be prepared for each size of corrugated pipe to be connected, which not only makes handling such as inventory management complicated, but also makes it extremely expensive from an economic point of view. Ta.

[Problem that the invention attempts to solve]

This device was devised to eliminate the drawbacks of the conventional products mentioned above, and instead of preparing joints of various diameters depending on the size of the corrugated pipe as in the conventional products, it was possible to easily connect large diameter pipes by replacing adapters. It is an object of the present invention to provide an adapter for a corrugated pipe joint that can easily connect corrugated pipes of a plurality of sizes used as branch pipes such as underdrain drain pipes to a joint connected to the pipe.

[Means to solve the problem]

This idea was devised in order to solve the above problem, and a fin-like support piece with a protrusion at the tip that engages with the trough of the corrugated pipe to be connected is installed inside the short tube. The problem was solved by having a plurality of pieces protrude from the circumferential surface toward the axis at predetermined intervals in the circumferential direction.

〔Example〕

Below, examples of this invention shown in the drawings will be explained.
To explain in more detail, Figures 1 and 2 are longitudinal and cross-sectional views showing one embodiment of the adapter for corrugated pipe fittings of this invention. A plurality of fin-shaped support pieces 2 are protruded along the axial direction at predetermined intervals in the circumferential direction from the inner periphery of the short tubular object 3 having the same outer periphery as the inner periphery. A plurality of projecting pieces 1 are formed in a serrated shape to engage with the trough a of the corrugated pipe A which is connected to the distal end of the supporting piece 2.

In addition, a tapered wall 4 is formed at the end of the support piece 2 on the side into which the corrugated pipe A is inserted, in order to improve the fitability of the corrugated pipe A, and the tapered wall 4 widens toward the end. The support piece 2 is made of an elastic synthetic resin such as polyethylene so that a plurality of corrugated pipes A of different sizes can be connected with one adapter.

[Effect]

As shown in FIGS. 4 to 6, the adapter for a corrugated pipe fitting of this invention has an elbow connected to a large-diameter straight pipe, and the adapter is fitted into the connecting part 6 of the cheese pipe fitting 5. By abutting the end of the corrugated pipe A against the opening of the adapter and pressing it, the corrugated pipe A is slid onto the tip of the support piece 2, and the support piece 2 is inserted into the trough a of the corrugated pipe A. It is fixed by locking the projecting piece 1 of.

[Effect of idea]

As is clear from the above, the adapter for corrugated pipe fittings of this invention has a fin-like support piece with a protrusion at its tip that engages with the trough of the corrugated pipe to be connected. Since it is composed of a plurality of pieces protruding from the surface toward the axis at predetermined intervals in the circumferential direction, the joint is connected to a large-diameter straight pipe, and the corrugated pipe is a branch pipe connected to the joint. Although the diameters of the corrugated pipes are different from each other, the corrugated pipe is supported at the tip of the supporting piece of the adapter fitted to the joint as shown in Figs. Since the projecting piece of the support piece is locked, it is firmly held, and therefore, it can be easily connected by replacing the adapter without preparing a joint for each size of corrugated pipe to be connected, unlike conventional products. Furthermore, as shown in FIG. 6, it is possible to connect corrugated pipes of a plurality of sizes with one adapter by utilizing the elasticity of the support piece, thereby further improving the ease of handling and economy.

[Brief explanation of the drawing]

FIGS. 1 and 2 are longitudinal sectional views showing an embodiment of the corrugated pipe joint adapter of this invention, and FIGS. 3 through 6 are sectional views showing the same in use. 1... Projection piece, 2... Support piece, 3... Short tubular object,
A...Corrugated pipe, a...Tanibe.

Claims (1)

[Scope of utility model registration request] A plurality of fin-like support pieces, each having a protrusion at the tip that engages with the trough of the corrugated pipe to be connected, are arranged at predetermined intervals in the circumferential direction from the inner peripheral surface of the short tube toward the axis. Adapter for fittings of corrugated pipes with one side protruding.