摘要:
Provided is a terminal structure of a high-pressure fuel pipe for a direct injection engine which can prevent stress concentration to a brazed portion between a pipe and a connection part effectively. In the terminal structure of a high-pressure fuel pipe for a direct injection engine where a connection head is brazed to an end of a fuel pipe, the end of the fuel pipe continued to a fuel pipe insertion portion of the connection head is provided with a drawn portion, an outer diameter D1 of the drawn portion to a fuel pipe diameter D satisfies 0.8D ‰¤ D1 ‰¤ 0.9D, and a length L1 of the drawn portion having the outer diameter D1 in a pipe-axial direction from an end of the fuel pipe insertion portion satisfies L1 ‰¥ 0.06D.
摘要:
In a refrigerant circuit component such as a pressure-sensitive device (pressure switch, pressure sensor, etc.) or valve device, the present invention projection-welds a connector (1) to a cap member (2) and prevents intrusion of spatter into a refrigerant circuit. An A-cylinder section (1a) in which an inside hole (1A) of the connector (1) is open is inserted in an inside hole (2A) formed in the center of the cap member (2). The area between the A-cylinder section (1a) and a projection (11d) of the connector (1) is used as a spatter generation space (²). The projection (11d) of the connector (1) abuts against the cap member (2) and is projection-welded to form a welded part (±). The open end (1A1) of the inside hole (1A) of the A-cylinder section (1a) is crimped to pressure-join the open end (1A1) to the open end (2A1) of the inside hole (2A) of the cap member (2). Spatter is sealed inside the spatter generation space (²). A portion of the surface layer to which the generated spatter adheres may be removed by machining to provide a spatter-removed structure.
摘要:
The present invention relates to a process for producing a branch (200) on a pre-insulated pipe (102,104), and to insulated branched medium conveying pipes obtainable by the process.
摘要:
Provided is a terminal structure of a high-pressure fuel pipe for a direct injection engine which can prevent stress concentration to a brazed portion between a pipe and a connection part effectively. In the terminal structure of a high-pressure fuel pipe for a direct injection engine where a connection head is brazed to an end of a fuel pipe, the end of the fuel pipe continued to a fuel pipe insertion portion of the connection head is provided with a drawn portion, an outer diameter D1 of the drawn portion to a fuel pipe diameter D satisfies 0.8D ≤ D1 ≤ 0.9D, and a length L1 of the drawn portion having the outer diameter D1 in a pipe-axial direction from an end of the fuel pipe insertion portion satisfies L1 ≥ 0.06D.
摘要:
Ein Kraftstoffverteiler (1) zum Zuführen von Kraftstoff zu Einspritzventilen eines Verbrennungsmotors weist ein Verteilerrohr (2) zur Aufnahme von unter Druck stehendem Kraftstoff auf. Im Verteilerrohr (2) sind Abzweigbohrungen (7) vorgesehen, an welche jeweils eine Abzweigleitung (6) über einen Anschlussadapter (8) angeschlossen ist. Die Anschlussadapter (8) sind als einstückige Tiefziehteile ausgeführt und besitzen einen an die Außenkontur des Verteilerrohrs (2) angepassten Montageflansch (9), über welchen der Anschlussadapter (8) mit dem Verteilerrohr (2) gefügt ist sowie einen radial zum Verteilerrohr (2) ausgerichteten Stutzen (10), in welchen ein Endabschnitt (11) einer Abzweigleitung (6) eingreift und mit dem Stutzen (10) gefügt ist. Am Innenumfang (13) des Stutzens (10) ist durch Materialverschiebung ein Anschlag (14) zur Lagepositionierung des Endabschnitts (11) der Abzweigleitung (6) ausgebildet.
摘要:
L'invention concerne un raccord (1) de branchement de canalisation comprenant un fût tubulaire (2) en matière synthétique muni à ses deux extrémités d'emboîtures (M, F) de liaison, ledit fût tubulaire (2) étant muni d'au moins une saillie (3) externe à paroi (3') plane percée d'un orifice (4), un manchon de branchement (7) étant fixé au fût tubulaire (2) en regard dudit orifice. Selon l'invention, ledit manchon de branchement (7) comporte une collerette plane (8) d'extrémité qui est fixée dans l'alignement de l'orifice (4), sur la face externe de ladite paroi plane (3'), et le manchon de branchement (7) est ajusté et fixé sur un manchon de fixation (5) traversant dont l'extrémité interne est munie d'une collerette plane (6) fixée sur ladite paroi plane (3').
摘要:
Le dispositif de liaison par raccordement d'éléments tubulaires sur des corps d'éléments de robinetterie, et notamment de valve, est remarquable en ce que l'élément tubulaire (5) est disposé dans un plan angulaire α par rapport au corps (1) de valve, et en ce qu'il est réalisé dans l'épaisseur réceptrice du corps de valve, un logement (la) profilé et notamment circulaire, et tout autour de ce logement une gorge (8) circulaire établie sur une partie de l'épaisseur de la zone de fixation du corps de valve en définissant une fente dans une profondeur appropriée et assurant un affranchissement de la liaison de l'élément tubulaire avec le reste du corps de valve, ladite gorge circulaire et concentrique au logement extérieurement définissant une collerette circulaire (1c) formant manchon, la liaison étant effectuée par tout moyen du type soudure, collage ou autre, et dans un même plan axial de l'élément tubulaire (5) avec la collerette (1 c).
摘要:
A tubular body (7) having a pipe joint member (11) attached to the peripheral wall thereof and communicating with the interior of the tubular body. The peripheral wall (7a) of the tubular body includes a curved wall portion having a circular-arc cross section and formed with a hole (14). The joint member has an outward flange (11a) at an intermediate portion of its length and a tubular portion (11b) positioned beyond the outward flange toward one end of the joint member and has its outer end inserted in the hole in the tubular body curved wall portion. The outward flange of the joint member is brazed to the outer surface of the tubular body curved wall portion with a brazing ring (15) which is fitted around the joint member tubular portion and positioned outside the tubular body. The brazing ring is made of a brazing sheet including cladding of brazing material over each of its opposite surfaces and has one surface joined to the outward flange and the other surface joined to the outer surface of the curved wall portion.
摘要:
The method of using the frictional heat and pressure produced by a rapidly rotating non-cutting piercing tool to weld two or more parts, such as a piece of tubing on one hand and a plate, a tube or another body having locally a relatively thin wall on the other hand, together, to which end said piercing tool is forced through the two or more parts after the latter have been placed in the exact relative positions.
摘要:
An electrofusion saddle comprising: a thermoplastic body comprising a flange and optionally a spigot which erects from said flange; and a resistance heating coil including multiple windings, wherein said resistance heating coil is partially embedded in said flange and is partially protruding from said flange, wherein the protrusion is of at least 25% of an average external diameter of said multiple windings.