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End cap

A technology of end cover and front end face, which is applied in the direction of low-pressure fuel injection, pipe components, fuel injection devices, etc., which can solve the problems of cost increase and achieve the effect of reliable brazing

Active Publication Date: 2019-04-16
USUI KOKUSAI SANGYO KAISHA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in order to hardly cause breakage under internal pressure load, it is necessary to form the rail main body to have a thick wall, resulting in an increase in cost

Method used

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Embodiment 1

[0036] The following will refer to figure 1 Embodiment 1, which is the first invention of the present application, will be described. First, (1) is an end cover, and the front end side is an insertion portion (3) to the track main body (2). In addition, the outer circumference of the base end (4) of the end cover (1) is provided with an abutment flange (5). Therefore, when the outer diameter of the insertion part (3) is formed to be approximately equal to the inner diameter of the rail body (2), and the insertion part (3) is inserted into the rail body (2), it is configured as a rail A state where the inner peripheral surface (6) of the main body (2) is in contact with the outer peripheral surface (7) of the insertion portion (3).

[0037] In addition, an engagement groove (10) is provided on the front end side of the insertion portion (3) of the above-mentioned end cover (1). Such as figure 2 As shown, the engaging groove (10) is composed of a pair of side surfaces (11) ...

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PUM

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Abstract

To obtain an end cap with which a brazing material ring can be arranged appropriately and brazing can be performed reliably when the insertion portion of the end cap is inserted and arranged in the end portion of a rail main body and the end cap is brazed and secured by means of the brazing material ring, and with which the rail main body is not susceptible to damage when there is an internal pressure load. An end cap that is inserted into and arranged inside the interior of an end portion of a rail main body 2, and brazed and secured to the inner circumference of the rail main body 2, whereinan engagement groove 10, which comprises a pair of side surfaces 11, 12 and a bottom surface 13, and is capable of engaging a brazing material ring 15, is provided on the outer circumference of an insertion portion 3 of the rail main body 2.

Description

technical field [0001] The invention relates to an end cover, which is fixedly arranged on the end of a fuel rail of a gasoline direct injection engine by brazing. Background technique [0002] So far, as in Patent Document 1 figure 2 As shown in paragraph 0004, there is known a method of inserting the end cap into the end of the rail body and brazing it. As an example of brazing the end caps to both ends of the rail body of the fuel rail in such a manner, for example, as Figure 5 As shown, there is known a method in which the inner surface of the end portion of the rail body (30) is cut to provide a stepped portion (31), and a brazing material ring (32) is inserted into the stepped portion (31) ), the insertion portion (34) of the end cover (33) is inserted into the end portion of the track main body (30), and brazing is performed in this state. [0003] Patent Document 1: Japanese Patent Application Laid-Open No. 2016-37928 Contents of the invention [0004] The pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M55/02
CPCF02M55/025F02M69/465F02M2200/8084F02M55/005F02M55/02F16L55/115
Inventor 室伏贤吾神田孝则
Owner USUI KOKUSAI SANGYO KAISHA LTD