CN215333202U

CN215333202U - Oil return pipe joint of national six high-pressure common rail oil injector

Info

Publication number: CN215333202U
Application number: CN202121846572.3U
Authority: CN
Inventors: 郭乐凯; 王乐进
Original assignee: Longkou Jingyi Industry And Trade Co ltd
Current assignee: Longkou Jingyi Industry And Trade Co ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2021-12-28
Anticipated expiration: 2031-08-09

Abstract

The utility model discloses a national six high-pressure common rail oil injector oil return pipe joint and relates to the field of engine accessories. The oil-out pipe comprises a main pipe and a side pipe connected with the main pipe, wherein the main pipe is perpendicular to the side pipe, the lower end of the main pipe is communicated with the middle part or the end part of the side pipe, the outer side of the upper end of the main pipe is coated with a plastic sleeve, the plastic sleeve upwards extends out of the main pipe and forms an oil outlet, and the plastic sleeve further comprises a movably connected inserting tongue. The problem of the joint of traditional working of plastics not be able to bear or endure high low temperature, easy fracture yielding defect appears easily is solved, realizes improving back oil pipe life, reduces the effect of trouble incidence.

Description

Oil return pipe joint of national six high-pressure common rail oil injector

Technical Field

The utility model relates to the field of engine accessories, in particular to a national six high-pressure common rail oil injector oil return pipe joint.

Background

The oil return pipe joint of the existing national six high-pressure common rail oil sprayer uses a plastic part, the integral plastic joint has the defects of easy fracture and easy deformation when in use, is easy to become brittle and fracture at low temperature and is easy to soften and deform at high temperature, so that the service life of the oil return pipe is reduced, and the failure occurrence rate is increased.

Disclosure of Invention

The utility model discloses a national six high-pressure common rail oil injector oil return pipe joint, which solves the defects that the joint of the traditional plastic piece is not resistant to high and low temperature, is easy to break and deform, and realizes the effects of prolonging the service life of an oil return pipe and reducing the fault occurrence rate.

The application discloses six high-pressure common rail fuel injector return oil pipe joints in state, including being responsible for and rather than the lateral tube that links to each other, be responsible for and the lateral tube sets up perpendicularly, and the middle part or the tip of being responsible for the lower extreme and lateral tube communicate with each other, and the upper end outside cladding of being responsible for has the plastic sleeve pipe, the plastic sleeve pipe upwards extends outside the main pipe and forms the oil-out, still includes swing joint's tongue of inserting on the plastic sleeve pipe.

Furthermore, the inserting tongue comprises a bottom plate and clamping tongues on two sides, a clamping groove is formed in the plastic sleeve, and the clamping tongues are matched with the clamping grooves.

Further, the bottom plate is arranged at the joint of the main pipe and the side pipe.

Furthermore, the joint of the main pipe and the side pipe is provided with an installation pressure support which has the same direction with the opening direction of the side pipe, and a solid reinforcing rib is arranged between the root of the installation pressure support and the transverse pipe.

Furthermore, a plurality of annular anti-falling convex rings are arranged on the outer side of the upper end of the main pipe.

Further, the main pipe and the side pipe or the main pipe, the side pipe and the installation pressure support are integrated into a stainless steel powder metallurgy part.

Furthermore, one end of the joint of the side pipe is a pagoda joint.

Furthermore, an annular groove is formed outside the oil outlet.

The beneficial effects of the utility model include:

the utility model discloses a technical scheme's the person in charge and the lateral pipe that stainless steel powder metallurgy spare formed and sealed working of plastics junction form through simple, high-efficient, the sealed design rubber coating of ditch slot type, realize promptly that stainless steel spare and working of plastics combine firm leak protection, still let tongue and plastics package mould the cooperation smoothly, realized the installation of joint and sprayer, dismantle conveniently. The joint that stainless steel and plastics combined has solved whole plastic joint and has used easy fracture, yielding defect, and stainless steel stable performance, the fastness is strong when being connected with the rubber tube, makes it difficult for becoming soft deformation when high temperature, difficult brittle fracture when low temperature, the effectual life who improves back oil pipe has reduced the trouble incidence. And the structure is easy to produce, and the rate of finished products is guaranteed to be as high as 99.9%.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are some embodiments of the utility model, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a front view of an embodiment of the present invention.

Fig. 2 is a perspective view of an embodiment of the present invention.

FIG. 3 is a side view of an embodiment of the present invention.

Fig. 4 is a perspective view of the second embodiment of the present invention.

Fig. 5 is a side cross-sectional view of the present invention.

Fig. 6 is a front sectional view of the present invention.

Fig. 7 is a structural view of the plastic bushing of the present invention.

Fig. 8 is a view showing the construction of the tongue of the present invention.

In the figure: 1. the anti-dropping device comprises a main pipe, 2 side pipes, 3 plastic sleeves, 4 oil outlets, 5 inserting tongues and 6 mounting pressure supports, 7 reinforcing ribs, 8 anti-dropping convex rings, 31 clamping grooves, 32 annular grooves, 51 bottom plates and 52 clamping tongues.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1-3, the oil return pipe joint of the national six-high pressure common rail oil injector comprises a main pipe 1 and a side pipe 2 connected with the main pipe, wherein the main pipe and the side pipe are vertically arranged, the lower end of the main pipe is communicated with the middle part of the side pipe to form a tee T-shaped structure, the outer side of the upper end of the main pipe is coated with a plastic sleeve 3, the plastic sleeve upwards extends out of the main pipe to form an oil outlet 4, and the plastic sleeve further comprises an inserting tongue 5 which is movably connected with the plastic sleeve.

When the three-way valve is used as a three-way valve, an oil outlet on the main pipe is connected with an oil injector, and two ends of the side pipe are used as oil return ports and connected with a hose.

Example two:

as shown in fig. 4, the oil return pipe joint of the national six high-pressure common rail oil injector comprises a main pipe 1 and a side pipe 2 connected with the main pipe, wherein the main pipe and the side pipe are vertically arranged, the lower end of the main pipe is communicated with the end part of the side pipe to form a two-way L-shaped structure, the outer side of the upper end of the main pipe is coated with a plastic sleeve 3, the plastic sleeve upwards extends out of the main pipe to form an oil outlet 4, and the plastic sleeve further comprises a movably connected inserting tongue 5.

When the oil return pipe is used as a two-way pipe, an oil outlet on the main pipe is connected with an oil injector, and the tail end of the side pipe is used as an oil return port and connected with a hose.

Example three:

on the basis of the first or second embodiment, as shown in fig. 5-8, the insertion tongue comprises a bottom plate 51 and two side locking tongues 52, the plastic sleeve is provided with a locking groove 31, and the locking tongues and the locking grooves are matched. The connection between the latch tongue and the plastic pipe sleeve is realized. The bottom plate is arranged at the joint of the main pipe and the side pipe. The junction of the main pipe and the side pipe is provided with an installation pressure support 6 which is consistent with the opening direction of the side pipe, and a solid reinforcing rib 7 is arranged between the root of the installation pressure support and the transverse pipe, so that the integral structural strength is further improved. The outer side of the upper end of the main pipe is also provided with a plurality of annular anti-falling convex rings 8, so that the stainless steel part and the plastic part are firmly combined and leak-proof. The main pipe and the side pipe or the main pipe, the side pipe and the installation pressure support are integrated into a stainless steel powder metallurgy part. One end of the joint of the side pipe is a pagoda joint. An annular groove 32 is provided outside the oil outlet.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. The utility model provides a six high-pressure common rail fuel injector return oil pipe joints in state, is including being responsible for (1) and side pipe (2) rather than linking to each other, be responsible for and the side pipe sets up perpendicularly, and the middle part or the tip of being responsible for the lower extreme and side pipe communicate with each other, and the upper end outside cladding of being responsible for has plastic sleeve pipe (3), plastic sleeve pipe upwards extends to outside the main pipe and forms oil-out (4), still includes swing joint's tongue (5) of inserting on the plastic sleeve pipe.

2. The oil return pipe joint of the national six high-pressure common rail oil injector according to claim 1, characterized in that: the inserting tongue comprises a bottom plate (51) and clamping tongues (52) on two sides, a clamping groove (31) is formed in the plastic sleeve, and the clamping tongues are matched with the clamping grooves.

3. The oil return pipe joint of the national six high-pressure common rail oil injector according to claim 2, characterized in that: the bottom plate is arranged at the joint of the main pipe and the side pipe.

4. The oil return pipe joint of the national six high-pressure common rail oil injector according to claim 1, characterized in that: the joint of the main pipe and the side pipe is provided with an installation pressure support (6) which has the same direction with the opening direction of the side pipe, and a solid reinforcing rib (7) is arranged between the root of the installation pressure support and the transverse pipe.

5. The oil return pipe joint of the national six high-pressure common rail oil injector according to claim 1, characterized in that: the outer side of the upper end of the main pipe is also provided with a plurality of annular anti-falling convex rings (8).

6. The oil return pipe joint of the national six high-pressure common rail oil injector according to claim 1 or 4, characterized in that: the main pipe and the side pipe or the main pipe, the side pipe and the installation pressure support are stainless steel powder metallurgy parts of an integrated structure.

7. The oil return pipe joint of the national six high-pressure common rail oil injector according to claim 1, characterized in that: one end of the joint of the side pipe is a pagoda joint.

8. The oil return pipe joint of the national six high-pressure common rail oil injector according to claim 1, characterized in that: an annular groove (32) is formed outside the oil outlet.