CN209228517U - Cushion block, high pressure nut, high-pressure adapter assembly and internal combustion engine - Google Patents
Cushion block, high pressure nut, high-pressure adapter assembly and internal combustion engine Download PDFInfo
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- CN209228517U CN209228517U CN201821909366.0U CN201821909366U CN209228517U CN 209228517 U CN209228517 U CN 209228517U CN 201821909366 U CN201821909366 U CN 201821909366U CN 209228517 U CN209228517 U CN 209228517U
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- cushion block
- high pressure
- pressure nut
- slot section
- internal combustion
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Abstract
The utility model relates to technical field of internal combustion engines, more particularly to a kind of internal combustion engine cushion block, high pressure nut, high-pressure adapter assembly and internal combustion engine.The cushion block (1) is formed with the centre bore (12) for assembling oil pipe (2), on the axial direction of the cushion block (1), the cushion block (1) is formed with the logical oil groove (13) by the side of the cushion block (1) and another fluid communication.The cushion block is formed with logical oil groove, can be by the fuel oil water conservancy diversion of leakage to the outside of internal combustion engine, and structure is simple, securely and reliably.
Description
Technical field
The utility model relates to technical field of internal combustion engines, more particularly to a kind of internal combustion engine cushion block, high pressure nut, high-voltage connecting
Head assembly and internal combustion engine.
Background technique
On the engine using high pressure co-rail system, high-pressure oil pipe is as connection fuel system components, completion high pressure
The important spare part of fuel oil transportation needs high reliability.Wherein, the internal combustion engine being directly connected in high-pressure oil pipe and fuel injector
In, the seal form of high-pressure oil pipe and fuel injector is generally by the way of linear sealing, specifically, the periphery of the bulb of high-pressure oil pipe
Face is contacted with the inner cone face contact of fuel injector connector with forming line, and is connect high-pressure oil pipe and fuel injector by high-pressure oil pipe nut
Head is compressed to form linear sealing structure.But linear sealing structure is high-pressure oil pipe nut moment is improper, high-pressure oil pipe is more at this
It is possible that seal failure, causes fuel oil to be leaked into the inside of engine when secondary use, finally cause to start
Machine failure brings loss and there are security risks.
Utility model content
The purpose of this utility model is to overcome internal combustion engines of the existing technology because between high-pressure oil pipe and fuel injector
The problem of fuel oil is leaked into engine interior caused by the linear sealing structural failure of formation provides a kind of cushion block, high pressure spiral shell
Female, high-pressure adapter assembly and internal combustion engine, the cushion block or high pressure nut are formed with logical oil groove, can arrive the fuel oil water conservancy diversion of leakage
The outside of internal combustion engine, structure is simple, securely and reliably.
To achieve the goals above, on the one hand the utility model provides a kind of cushion block, and the cushion block is formed with for assembling
The centre bore of oil pipe, on the axial direction of the cushion block, the cushion block is formed with the side of the cushion block and another effluent
The logical oil groove of body connection.
Preferably, the logical oil groove includes the first slot section and the second slot section to communicate with each other, wherein the first slot section shape
The outer peripheral surface of cushion block described in Cheng Yu, the second slot section be formed in the cushion block for backstop in the lip portions of high pressure nut
First end face.
Preferably, the cushion block is set as cylindrical structure, and the first slot section axially extends；And/or the cushion block is set as
Cylindrical structure, the second slot section radially extend.
Preferably, the cushion block is formed with multiple logical oil grooves.
The utility model second aspect provides a kind of high pressure nut, and the high pressure nut is formed with centre bore, it is described in
The internal perisporium in heart hole is formed with the lip portions for assembling oil pipe, and the lip portions are formed with the installation for being arranged the oil pipe
Hole, the first anchor ring of the lip portions is for oil pipe described in backstop, the side shape close to first anchor ring of the centre bore
At the internal screw thread having for assembling the fuel injector, the high pressure nut is formed with the centre bore and the mounting hole fluid
The logical oil groove of connection.
Preferably, the logical oil groove includes the third slot section and the 4th slot section to communicate with each other, wherein the third slot section shape
The inner peripheral surface of centre bore described in Cheng Yu, the 4th slot section are formed on first anchor ring.
Preferably, the high pressure nut includes at least one of following several forms: the third slot section is prolonged along axial direction
It stretches；The 4th slot section radially extends；The high pressure nut is formed with multiple logical oil grooves.
The utility model third aspect provides a kind of high-pressure adapter assembly, and the high-pressure adapter assembly includes cushion block and height
Press nut, wherein the cushion block is set as the cushion block, and/or, the high pressure nut is set as the high pressure nut,
The cushion block is configured to be contained in the centre bore of the high pressure nut and backstop in the first anchor ring of the high pressure nut.
The utility model fourth aspect provides a kind of internal combustion engine, and the internal combustion engine includes internal combustion engine main body, oil pipe, shell
With the high-pressure adapter assembly, the internal combustion engine main body includes fuel injector, and the fuel injector is contained in what the shell was formed
In chamber and it is formed with external screw thread, one end of the high pressure nut penetrates the oil inlet of the shell and is set in the spray
Outside oily device so that the external thread bolt connection of the internal screw thread of the centre bore of the high pressure nut and the fuel injector, the oil pipe according to
It is secondary described in deviating from for the cushion block through the mounting hole of the lip portions, the centre bore of the cushion block and head difference backstop
Between the inner conical surface of the pouring orifice of the end face of first anchor ring and the fuel injector.
Preferably, the internal combustion engine includes sealing ring, and the joint of the fuel injector is formed with sealed groove, the sealing
Snare is located in the sealed groove and resists the inner peripheral surface of the centre bore of the high pressure nut, so that the high pressure nut
It is tightly connected with the fuel injector.
Through the above technical solutions, the utility model provides a kind of cushion block, high pressure nut, high-pressure adapter assembly and internal combustion
Machine, the cushion block or/and high pressure nut are formed with logical oil groove, can be by the fuel oil water conservancy diversion of leakage to the outside of internal combustion engine, structure letter
It is single, securely and reliably.
Detailed description of the invention
Fig. 1 is a kind of partial schematic diagram of internal combustion engine provided by the utility model；
Fig. 2 is a kind of right view of cushion block provided by the utility model；
Fig. 3 is a kind of cross-sectional view of cushion block provided by the utility model.
Description of symbols
1, cushion block；11, first end face；12, centre bore；13, lead to oil groove；131, the first slot section；132, the second slot section；14,
Outer peripheral surface；15, second end face；2, oil pipe；21, head；3, fuel injector；31, sealed groove；32, inner conical surface；4, high pressure nut；
41, lip portions；43, screw thread hole section；44, second hole section is lengthened；45, the first anchor ring；46, first hole section is lengthened；5, shell；6, close
Seal.
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein
Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.
A kind of cushion block of the utility model, as shown in Figure 1, the cushion block 1 is formed with the centre bore 12 for assembling oil pipe,
On the axial direction of the cushion block 1, the cushion block 1 is formed with the logical oil by the side of the cushion block 1 and another fluid communication
Slot 13.
A kind of specific embodiment according to the present utility model, high pressure nut 4 are formed with the flange for backstop cushion block 1
Portion, the lip portions are formed with the mounting hole for assembling oil pipe, and cushion block 1 is assemblied in the centre bore of high pressure nut 4 and stops
Be blocked in the first anchor ring of lip portions, 21 backstop of head of oil pipe 2 in the endface away from first anchor ring of the cushion block 1,
Pipe portion one end of oil pipe is connected to the head of the oil pipe, and the other end sequentially passes through the mounting hole of the centre bore of cushion block, lip portions
And the high pressure nut is stretched out, and form gap between the pipe portion of the oil pipe and the mounting hole of the lip portions, lead to oil groove
13 are configured to for the fuel oil that the head of oil pipe is flowed out being introduced into the gap by the side of cushion block 1, so that oil pipe
The high pressure nut 4 can be discharged via the cushion block 1 in the fuel oil that head leaks out.
Through the above technical solutions, the utility model provides a kind of cushion block, high pressure nut, high-pressure adapter assembly and internal combustion
Machine, the cushion block or/and high pressure nut are formed with logical oil groove, can be by the fuel oil water conservancy diversion of leakage to the outside of internal combustion engine, structure letter
It is single, securely and reliably.
As shown in Figure 1-3, the cushion block 1 include for backstop in the lip portions 41 of high pressure nut 4 first end face 11 with
And the second end face 15 far from the first end face 11, wherein logical oil groove 13 can be set to various reasonable forms, for example, logical
Oil groove 13 is set as running through the flow passage of the cushion block 1 along the axial direction of cushion block 1.Preferably, lead to oil groove 13 to be set on
The groove structure being located on the surface of cushion block 1, it is easy to process, for example, logical oil groove 13 can be set to the centre bore for being provided with cushion block
Inner peripheral surface on groove structure；It is furthermore preferred that the logical oil groove 13 includes the first slot section 131 to communicate with each other and the second slot
Section 132, wherein the first slot section 131 is formed in the outer peripheral surface 14 of the cushion block 1, and the second slot section 132 is formed in institute
That states cushion block 1 is used for backstop in the first end face 11 of the lip portions 41 of high pressure nut 4, by the way that the first slot section 131 to be arranged to
The groove structure and the second slot section 132 for being enough connected to first end face and second end face be configured to the outer peripheral surface of connection cushion block with
The groove structure of the inner peripheral surface of centre bore, structure is simple, is conducive to the inside edge of the second end face of cushion block more securely backstop oil
The mounting stability of oil pipe is improved on the head of pipe.
Further, the cushion block 1 is set as cylindrical structure, and the first slot section 131 axially extends, and structure is simple, letter
Change difficulty of processing, shortens the processing length of the first slot section 131, avoid adversely affecting the intensity of cushion block.Such as the institute of Fig. 2 and 3
Showing, the cushion block 1 is set as cylindrical structure, and the second slot section 132 radially extends, and it is easy to process, convenient for production and production.
Further, the cushion block 1 is formed with multiple logical oil grooves 13, is conducive to the combustion that the head of oil pipe leaks out
Can high pressure nut 4 rapidly be discharged via logical oil groove 13 in oil.Wherein, leading to oil groove 13 can be set to any reasonable quantity,
For example, as shown in Figures 2 and 3, cushion block 1 includes 4 logical oil grooves, this 4 logical oil grooves 13 are uniformly distributed along the circumferential direction of cushion block.
The utility model second aspect provides a kind of high pressure nut, as shown in Figure 1, during the high pressure nut 4 is formed with
Heart hole, the internal perisporium of the centre bore are formed with the lip portions 41 for assembling oil pipe, and the lip portions 41 are formed with for covering
If the mounting hole of the oil pipe, the first anchor ring 45 of the lip portions 41 for oil pipe described in backstop, the centre bore it is close
The side of first anchor ring 45 is formed with the internal screw thread for assembling the fuel injector, and the high pressure nut 4 is formed with institute
State the logical oil groove that centre bore and the mounting hole are in fluid communication.
The tool internal thread side of a kind of specific embodiment according to the present utility model, high pressure nut is set in oil spout
It is threadedly coupled on device 3 and with fuel injector 3, the side with lip portions 41 of high pressure nut keeps compartment of terrain to be set in oil pipe
Outside pipe portion, i.e., gap, and the side of the mounting hole of lip portions 41 are formed between the pipe portion of oil pipe and the mounting hole of the lip portions
Rear spherical surface along the head for resisting oil pipe is to fix oil pipe, so that the preceding spherical surface on the head of oil pipe resists the pouring orifice of fuel injector
Inner conical surface, connected to linear sealing between the head of oil pipe and the inner conical surface of the pouring orifice of fuel injector to realize, in order to
Fuel oil smooth delivery of power in oil pipe is into fuel injector, and the setting of the logical oil groove of high pressure nut 4, so that the centre bore of high pressure nut
The hole section between internal screw thread and lip portions can be connected to the gap location, in order in the head of oil pipe and fuel injector
Between the inner conical surface of pouring orifice when seal failure, the fuel oil leaked in oil pipe can be along the oil extraction for being discharged to gap location by leading to oil groove
Path B is discharged into outside high pressure nut.Specifically, the head backstop of oil pipe is in the first anchor ring 45 of lip portions 41, the pipe portion of oil pipe
One end is connected to the head of the oil pipe, and the other end passes through the mounting hole of lip portions and stretches out the high pressure nut, and described
Gap is formed between the pipe portion of oil pipe and the mounting hole of the lip portions, logical oil groove 13 is configured to flow out on the head of oil pipe
Fuel oil be introduced into the gap by the centre bore of high pressure nut 4 so that the fuel oil that the head of oil pipe leaks out can
The high pressure nut 4 successively via logical oil groove and gap and is finally discharged.
Further, the logical oil groove includes the third slot section and the 4th slot section to communicate with each other, wherein the third slot section
Be formed in the inner peripheral surface of the centre bore, the 4th slot section is formed on first anchor ring 45, and structure is simple, convenient for pair
It can be in the drainage of logical oil groove after tubing leak to the hole section between internal screw thread and lip portions of the centre bore of high pressure nut
The gap location is discharged under effect.Wherein, which can be set to various reasonable forms, for example, logical oil groove can be set
For the flow passage axially through lip portions, enable the fuel oil of tubing leak interior by being located at for the centre bore of high pressure nut
Hole section between screw thread and lip portions is expelled directly out high pressure nut without the gap location；Logical oil groove also can be set to by first
Anchor ring extends through the flow passage of the inner peripheral surface of the mounting hole of lip portions, enable the fuel oil of tubing leak by centre bore via
Logical oil groove is discharged into the gap location, and the high pressure nut is finally discharged.
Further, the third slot section axially extends, and structure is simple, easy to process；The 4th slot section is radially
Extend, structure is simple, so that not being between the inside edge of the mounting hole of the rear end face and lip portions on the head of oil pipe is linear sealing
Ground connection, there is gap is formed by by logical oil groove, in order to which the fuel oil of tubing leak can be by centre bore via the gap
Place is discharged into the gap location；The high pressure nut 4 is formed with multiple logical oil grooves, and the fuel oil for being conducive to tubing leak can be in
Heart hole is fast and efficiently discharged into the gap location.
A kind of high-pressure adapter assembly is provided according to the utility model third aspect, as shown in Figure 1, the high pressure connection group
Part includes cushion block 1 and high pressure nut 4, wherein and the cushion block 1 is set as the cushion block 1, and/or, the high pressure nut 4 is set as
The high pressure nut 4, the cushion block 1 be configured to be contained in the centre bore of the high pressure nut 4 and backstop in
First anchor ring 45 of the high pressure nut 4.
It is noted that logical oil groove can be to be located on high pressure nut 4, it can be located on cushion block 1, can also set simultaneously
On high pressure nut 4 and cushion block 1, in order to which high pressure nut is discharged along oil extraction path B in the fuel oil of tubing leak；Specifically, in oil
Oil extraction path B between the inner conical surface of the pouring orifice on the head and fuel injector of pipe when seal failure, in Fig. 1 are as follows: first by oil pipe
Be formed by between the inner conical surface of the pouring orifice of head and fuel injector notch be drained into high pressure nut centre bore be located at interior spiral shell
Hole section between line and lip portions, then the gap location is drained by logical oil groove, it is final that high pressure nut is discharged, wherein fuel oil stream
Oil extraction path through leading to oil groove is to be drained into the second slot section 132 being disposed radially by the first axially disposed slot section 131,
Either, the 4th slot section being disposed radially is drained by axially disposed third slot section.
A kind of internal combustion engine is provided according to the utility model fourth aspect, as shown in Figure 1, the internal combustion engine includes internal combustion engine
Ontology, oil pipe 2, shell 5 and the high-pressure adapter assembly, the internal combustion engine main body include fuel injector 3, and the fuel injector 3 holds
It is contained in the chamber that the shell 5 is formed and is formed with external screw thread, one end of the high pressure nut 4 penetrates the shell 5
It oil inlet and is set in outside the fuel injector 3, so that the internal screw thread of the centre bore of the high pressure nut 4 and the fuel injector
3 external thread bolt connection, the oil pipe 2 sequentially pass through the mounting hole of the lip portions 41, the centre bore of the cushion block 1 and head
21 difference backstops are in the inner cone of the pouring orifice of the end face and fuel injector 3 away from first anchor ring 45 of the cushion block 1
Between face 32, in order to tubing leak fuel oil along oil extraction path B discharge internal combustion engine shell outside.Wherein, the head of oil pipe is set
For spherical shape, the preceding spherical surface on the head of oil head resists the inner conical surface 32 of the pouring orifice of fuel injector 3, so that oil pipe can be with fuel injector
It is connected in a manner of linear sealing, moreover, the rear spherical surface on the head of oil head resists the inside edge of the centre bore of cushion block, is conducive to fix
The head of oil pipe optimizes between oil pipe and fuel injector in order to enable the head of oil pipe more securely to resist fuel injector
Leakproofness.
As shown in Figure 1, the internal combustion engine includes sealing ring 6, the joint of the fuel injector 3 is formed with sealed groove 31,
The sealing ring 6 is set in the inner peripheral surface for the centre bore in the sealed groove 31 and resisting the high pressure nut 4, so that
The high pressure nut 4 is tightly connected with the fuel injector 3.By above structure, lead between high pressure nut 4 and the fuel injector 3
Sealing ring is crossed to be connected and sealed, in order to tubing leak fuel oil only can along oil extraction path B be discharged internal combustion engine shell outside,
And it cannot be leaked into the inside of engine via fuel oil in the shell for being drained into internal combustion engine, is avoided and engine is caused to lose
Effect, it is highly-safe.Wherein, as shown in Figure 1, high pressure nut 4 includes being separately positioned on the first of high pressure nut both ends to lengthen hole section
46 and second lengthen hole section 44, and the first lengthening hole section 46 is connect with lip portions 41, and first lengthens the aperture of hole section greater than prominent
The aperture of the mounting hole of edge can lengthen hole section discharge via first in order to drain into the fuel oil of gap location along oil extraction route B
High pressure nut, to be discharged to outside the shell of internal combustion engine, the formation of the centre bore of the second lengthening hole section and the high pressure nut has interior spiral shell
The hole section of line connects, that is, the second lengthening hole section is connect with screw thread hole section 43, for accommodating fuel injector；Moreover, high by lengthening
Nut is pressed, convenient for the installation of high pressure nut.Further, as shown in Figure 1, the sealing ring, which can be set, lengthens hole section 44 second
At corresponding position, prevent the fuel oil of tubing leak via oil extraction path A from being drained into the shell of internal combustion engine；Specifically
Ground, the oil extraction path A between the inner conical surface of the pouring orifice on the head and fuel injector of oil pipe when seal failure, in Fig. 1 are as follows: first by
The position that notch is drained into the centre bore of high pressure nut is formed by between the inner conical surface of the pouring orifice on the head and fuel injector of oil pipe
Hole section between internal screw thread and lip portions, then the second lengthening hole section is flow to by the screw thread hole section 43 of high pressure nut, and
At the position being tightly connected by sealing ring and fuel injector that final backstop lengthens hole section in second, so as to avoid tubing leak
Fuel oil be drained into the shell of internal combustion engine.
Preferred embodiments of the present invention, still, the utility model and unlimited are described in detail in conjunction with attached drawing above
In this.In the range of the technology design of the utility model, a variety of simple variants can be carried out to the technical solution of the utility model,
In order to avoid unnecessary repetition, no further explanation will be given to various combinations of possible ways for the utility model.But these simple changes
Type and combination equally should be considered as content disclosed in the utility model, belong to the protection scope of the utility model.
Claims (10)
1. a kind of cushion block, which is characterized in that the cushion block (1) is formed with the centre bore (12) for assembling oil pipe (2), described
On the axial direction of cushion block (1), the cushion block (1) is formed with the logical of the side of the cushion block (1) and another fluid communication
Oil groove (13).
2. cushion block according to claim 1, which is characterized in that the logical oil groove (13) includes the first slot section to communicate with each other
(131) and the second slot section (132), wherein the first slot section (131) is formed in the outer peripheral surface (14) of the cushion block (1), described
Second slot section (132) be formed in the cushion block (1) for backstop in the first end face of the lip portions (41) of high pressure nut (4)
(11)。
3. cushion block according to claim 2, which is characterized in that the cushion block (1) is set as cylindrical structure, the first slot section
(131) it axially extends；
And/or the cushion block (1) is set as cylindrical structure, the second slot section (132) radially extends.
4. cushion block described in any one of -3 according to claim 1, which is characterized in that the cushion block (1) is formed with multiple institutes
State logical oil groove (13).
5. a kind of high pressure nut, which is characterized in that the high pressure nut (4) is formed with centre bore, the internal perisporium of the centre bore
The lip portions (41) for assembling oil pipe (2) are formed with, the lip portions (41) are formed with the peace for being arranged the oil pipe (2)
Fill hole, the first anchor rings (45) of the lip portions (41) for oil pipe (2) described in backstop, the centre bore close to described first
The side of anchor ring (45) is formed with the internal screw thread for assembling fuel injector (3), and the high pressure nut (4) is formed with the center
The logical oil groove that hole and the mounting hole are in fluid communication.
6. high pressure nut according to claim 5, which is characterized in that the logical oil groove includes the third slot section to communicate with each other
With the 4th slot section, wherein the third slot section is formed in the inner peripheral surface of the centre bore, and the 4th slot section is formed in described
On one anchor ring (45).
7. high pressure nut according to claim 6, which is characterized in that the high pressure nut (4) includes following several forms
At least one of:
The third slot section axially extends；
The 4th slot section radially extends；
The high pressure nut (4) is formed with multiple logical oil grooves.
8. a kind of high-pressure adapter assembly, which is characterized in that the high-pressure adapter assembly includes cushion block (1) and high pressure nut (4),
In, the cushion block (1) is set as cushion block described in any one of -4 (1) according to claim 1, and/or, the high pressure nut
(4) it is set as the high pressure nut (4) according to any one of claim 5-7, the cushion block (1) is configured to
It is contained in the centre bore of the high pressure nut (4) and backstop is in the first anchor ring (45) of the high pressure nut (4).
9. a kind of internal combustion engine, which is characterized in that the internal combustion engine includes internal combustion engine main body, oil pipe (2), shell (5) and according to power
Benefit require 8 described in high-pressure adapter assembly, the internal combustion engine main body includes fuel injector (3), and the fuel injector (3) is contained in described
In the chamber that shell (5) is formed and be formed with external screw thread, one end of the high pressure nut (4) penetrate the shell (5) into
Hydraulic fluid port and the fuel injector (3) is set in outside, so that the internal screw thread of the centre bore of the high pressure nut (4) and the oil spout
The external thread bolt connection of device (3), the oil pipe (2) sequentially pass through the mounting hole, described of the lip portions (41) of the high pressure nut (4)
The centre bore and head (21) difference backstop of cushion block (1) are in the end face away from first anchor ring (45) of the cushion block (1)
And between the inner conical surface (32) of the pouring orifice of the fuel injector (3).
10. internal combustion engine according to claim 9, which is characterized in that the internal combustion engine includes sealing ring (6), the oil spout
The joint of device (3) is formed with sealed groove (31), and the sealing ring (6) is set in the sealed groove (31) and resists
The inner peripheral surface of the centre bore of the high pressure nut (4), so that the high pressure nut (4) and the fuel injector (3) are tightly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821909366.0U CN209228517U (en) | 2018-11-19 | 2018-11-19 | Cushion block, high pressure nut, high-pressure adapter assembly and internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821909366.0U CN209228517U (en) | 2018-11-19 | 2018-11-19 | Cushion block, high pressure nut, high-pressure adapter assembly and internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209228517U true CN209228517U (en) | 2019-08-09 |
Family
ID=67503655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821909366.0U Active CN209228517U (en) | 2018-11-19 | 2018-11-19 | Cushion block, high pressure nut, high-pressure adapter assembly and internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209228517U (en) |
-
2018
- 2018-11-19 CN CN201821909366.0U patent/CN209228517U/en active Active
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