JPH02130490U

JPH02130490U -

Info

Publication number: JPH02130490U
Application number: JP3970089U
Authority: JP
Priority date: 1989-04-04
Filing date: 1989-04-04
Publication date: 1990-10-26

Description

[Brief explanation of drawings]

第１図は本考案の実施の一例の連結構造を示す
半分を縦断した正面図、第２図は同部分拡大断面
図、第３図イ〜ハは連結工程説明図、第４図は他
の例の部分拡大断面図、第５図、第６図はそれぞ
れ従来例の断面図である。１０……鉛管本体、１１……合成樹脂被覆層、
１２……拡開部、１２ａ……テーパー部、１２ｂ
……等径筒状部、１３……等径筒状部、１６……
鉛管連結筒部、１７……テーパー部、１８……環
状突条、１９……はんだ。 Fig. 1 is a front view of a half longitudinal section showing a connection structure of an example of the implementation of the present invention, Fig. 2 is an enlarged sectional view of the same part, Fig. 3 A to C are illustrations of the connection process, and Fig. 4 is another The partially enlarged sectional view of the example, FIG. 5, and FIG. 6 are sectional views of the conventional example, respectively. 10... Lead pipe body, 11... Synthetic resin coating layer,
12... Expanded part, 12a... Tapered part, 12b
... Equal diameter cylindrical part, 13 ... Equal diameter cylindrical part, 16 ...
Lead pipe connecting cylinder portion, 17...Tapered portion, 18...Annular protrusion, 19...Solder.

Claims

[Scope of utility model registration request]

The end of the lead pipe having a synthetic resin coating layer on its inner surface is provided with an expanded part for inserting the joint by expanding the inner diameter, and the lead pipe connecting cylinder part of the joint is fitted into the expanded part, and the outer periphery of the lead pipe connecting cylinder part is fitted. In a joint connection structure for water lead pipes in which solder is interposed between the joint and the inner surface of the expanded portion, the synthetic resin is bonded between the outer periphery of the tip of the lead pipe connecting tube of the joint and the inner surface of the inner surface of the expanded portion. 1. A joint connection structure for water lead pipes, characterized in that the ends of the coating layer are held in place, and an annular protrusion for preventing the inflow of solder material is integrally provided on the outer periphery of the tip of the lead pipe connection tube of the joint.