CN206290567U - Connecting rob bushing - Google Patents
Connecting rob bushing Download PDFInfo
- Publication number
- CN206290567U CN206290567U CN201621481770.3U CN201621481770U CN206290567U CN 206290567 U CN206290567 U CN 206290567U CN 201621481770 U CN201621481770 U CN 201621481770U CN 206290567 U CN206290567 U CN 206290567U
- Authority
- CN
- China
- Prior art keywords
- rob bushing
- connecting rob
- oil groove
- shape oil
- cell wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses a kind of connecting rob bushing, the inwall of the connecting rob bushing is provided with band shape oil groove, bending with shape oil groove in middle part less than two ends, two ends with shape oil groove are formed through oil inlet with the edges at two ends of connecting rob bushing, width of the width at the two ends oil inlet with shape oil groove more than the middle part with shape oil groove.The connecting rob bushing can ensure that connecting rob bushing inner surface integrally lubricates.
Description
Technical field
The utility model is related to field of internal combustion engine, more particularly to a kind of connecting rob bushing.
Background technology
Connecting rob bushing is, in order to strengthen the lubrication and bearing capacity of small end of connecting rod, to improve connecting rod reliability and be fitted in connecting rod
Part in small head bore.Connecting rob bushing is mutually slided with piston pin at work, when piston is run downwards by gas pressure, he
Carry the immense pressure of piston pin transmission.So for improving the lubrication on connecting rob bushing surface, and retain connecting rob bushing downside
Bearing area is extremely important.In order to provide connecting rob bushing inner surface oil film, mainly opened up by connecting rob bushing upper side at present
Oil groove (downside in order to ensure bearing area, so oil groove is not opened up, to increase the bearing area of connecting rob bushing downside, from
And reduce the pressure of connecting rob bushing downside), and it is glossy from piston cavity introducing lubrication to open up 1~2 fuel feed hole in upper side
Sliding connecting rob bushing surface.
As shown in figure 1, prior art is to offer " people " word oil groove 2 in connecting rob bushing inner surface upper side, and by
Connecting rob bushing upper side opens up 1~2 fuel feed hole 1, so as to introduce lubricating oil to oil groove 2 from piston cavity spill port, to provide
Enough lubrications are provided when connecting rob bushing is with piston pin relative motion.
But there is problems with traditional scheme：
1st, opening up fuel feed hole 1 increases processing cost.
2nd, because connecting rod opposing pistons swing back and forth at work, only two fuel feed holes 1 of connecting rob bushing are in work very long
Make all be aligned in the cycle, it is impossible to lubricating oil is effectively ensured the offer lubrication of connecting rob bushing oil groove 2 is provided.
3rd, connecting rob bushing edge 3 is not attached to connecting rob bushing oil groove 2, and the lubricating oil for being splashed to connecting rob bushing edge 3 can not
Connecting rob bushing oil groove 2 is introduced into, oil film cannot be utilized effectively.
4th, connecting rob bushing oil groove 2 is only distributed in connecting rob bushing central side, and connecting rob bushing both ends of the surface have the wind of missing lubricating oil
Danger.
The information for being disclosed in the background section is merely intended to increase the understanding to general background of the present utility model, and
It is not construed as recognizing or implying in any form that the information structure has been existing well known to persons skilled in the art
Technology.
Utility model content
The purpose of this utility model is to provide a kind of connecting rob bushing, it is ensured that connecting rob bushing inner surface integrally lubricates.
To achieve the above object, the utility model provides a kind of connecting rob bushing, and the inwall of the connecting rob bushing is provided with
Two end edges of band shape oil groove, the bending with shape oil groove in middle part less than two ends, the two ends with shape oil groove and connecting rob bushing
Edge is formed through oil inlet, width of the width at the two ends oil inlet with shape oil groove more than the middle part with shape oil groove.
Preferably, the upside cell wall with shape oil groove and the downside cell wall with shape oil groove are arc, the arc of downside cell wall
Radius is 4-6 times of the arc radius of upside cell wall.
Preferably, the arc radius 5-9mm of upside cell wall.
Preferably, the projector distance between the minimum point of the minimum point of downside cell wall and upside cell wall is not less than 5mm.
Preferably, the groove depth with shape oil groove is 1-1.5mm.
Preferably, the width of the upper side wall of connecting rob bushing is located at more than the width of the lower wall of connecting rob bushing with shape oil groove
The inner surface of upper side wall.
Preferably, shape oil groove is front and rear on upper side wall is symmetrical arranged two for band.
Preferably, projection angle X=10~25 ° at the two ends of the upside cell wall with shape oil groove 21.
Preferably, projection angle Y=50~53 ° of the downside cell wall edge with shape oil groove 21 and vertical direction.
Compared with prior art, the utility model has the advantages that：By connecting rod oil line using directly from connecting rod
Bush end face oil-feed, regardless of connecting rod and piston relative position, can continue oil-feed, to ensure connecting rob bushing and piston pin
Lubrication, this connecting rob bushing oil groove through connecting rob bushing end face design, it is also ensured that connecting rob bushing inner surface integrally moistens
It is sliding.When the engine is running, closely coupled with connecting rob bushing edge is very large connecting rob bushing oil inlet, while again because even
Bushing oil groove is in middle low, both sides shape high, and the inflow of connecting rob bushing oil inlet can be effectively introduced and stored by gravity
Lubricating oil.Meanwhile, connecting rob bushing oil groove extends transversely through connecting rob bushing, is conducive to lubricating oil to be dissipated comprehensively in connecting rob bushing inner surface
Cloth.
Brief description of the drawings
Fig. 1 is the structure chart of my connecting rob bushing existing；
Fig. 2 is according to connecting rob bushing structure chart of the present utility model；
Fig. 3 is the sectional view according to connecting rob bushing of the present utility model；
Fig. 4 is the left view according to connecting rob bushing of the present utility model；
Fig. 5 is the front view according to connecting rob bushing of the present utility model.
Specific embodiment
Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is described in detail, it is to be understood that this practicality
New protection domain is not limited by specific embodiment.
Explicitly indicated that unless otherwise other, otherwise in entire disclosure and claims, term " including " or its change
Change such as "comprising" or " including " etc. and will be understood to comprise stated element or part, and do not exclude other units
Part or other parts.
As shown in Figures 2 to 4, according to a kind of connecting rob bushing of the utility model specific embodiment, connecting rob bushing it is interior
Wall is provided with band shape oil groove 21, the bending with shape oil groove 21 in middle part less than two ends, two ends and company with shape oil groove 21
The edges at two ends 31 of bushing is formed through oil inlet c, and the width at the two ends oil inlet with shape oil groove 21 is more than band shape oil groove
The width of 21 middle part.
In such scheme, connecting rod oil line 21 is using directly from connecting rob bushing end face oil-feed, no matter connecting rod position relative with piston
Put how, oil-feed can be continued, to ensure the lubrication of connecting rob bushing and piston pin, this connecting rob bushing oil groove 21 runs through connecting rod
The design of bush end face, it is also ensured that connecting rob bushing inner surface integrally lubricates.When the engine is running, with connecting rob bushing edge
That closely coupled is very large connecting rob bushing oil inlet c, while again because connecting rob bushing oil groove 21 is in middle low, both sides shape high
Shape, can effectively introduce and store the lubricating oil of connecting rob bushing oil inlet c inflows by gravity.Meanwhile, connecting rob bushing oil groove 2 is laterally
Through connecting rob bushing, lubricating oil can be conducive to be spread comprehensively in connecting rob bushing inner surface.In addition, cancel it is of the prior art enter
Hydraulic fluid port 1 (participation Fig. 1), reduces processing cost.
Used as a kind of preferred embodiment, the upside cell wall with shape oil groove 21 and the downside cell wall with shape oil groove 21 are arc
Shape, the arc radius R2 of downside cell wall is 4-6 times (participation Fig. 3) of the arc radius R of upside cell wall.
Used as a kind of preferred embodiment, the arc radius R of upside cell wall is 5-9mm.
Used as a kind of preferred embodiment, the projector distance between the minimum point of downside cell wall and the minimum point of upside cell wall is
H is not less than 5mm.
Used as a kind of preferred embodiment, the groove depth with shape oil groove 21 is 1-1.5mm.
As a kind of preferred embodiment, the width of the width more than the lower wall b of connecting rob bushing of the upper side wall a of connecting rob bushing
(participation Fig. 5), the inner surface of upper side wall a is located at shape oil groove 21, is so designed to increase the pressure-bearing of connecting rob bushing downside
Area, reduces the ratio pressure that connecting rob bushing is born.And, when the engine is running, piston cavity oil return can be random unrestrained
On small end of connecting rod, because small end of connecting rod is using upper side wall a small, lower wall b big mode, connecting rob bushing edge is easy in a steady stream
Constantly it is collected into the unrestrained lubricating oil of piston cavity.And closely coupled with connecting rob bushing edge is very large connecting rob bushing oil-feed
Mouth c, while can effectively be introduced and the company of storage by gravity because connecting rob bushing oil groove 21 is in middle low, both sides shape high again
The lubricating oil that bushing oil inlet c is flowed into.
Used as a kind of preferred embodiment, band shape oil groove 21 is front and rear on upper side wall a to be symmetrical arranged two.
As a kind of preferred embodiment, the projection angle X=10~25 ° (ginseng at the two ends of the upside cell wall with shape oil groove 21
Plus Fig. 3).
As a kind of preferred embodiment, the projection angle Y=50 of the downside cell wall edge with shape oil groove 21 and vertical direction
~53 ° (participation Fig. 4).
To sum up, the connecting rob bushing of the present embodiment, by connecting rod oil line 21 using direct from connecting rob bushing end face oil-feed, no matter
How are connecting rod and piston relative position, can continue oil-feed, and to ensure the lubrication of connecting rob bushing and piston pin, this connecting rod is served as a contrast
Design of the set oil groove 21 through connecting rob bushing end face, it is also ensured that connecting rob bushing inner surface integrally lubricates.When engine operation
When, that closely coupled with connecting rob bushing edge is very large connecting rob bushing oil inlet c, while again because connecting rob bushing oil groove 21 is in
Middle low, both sides shape high, can effectively introduce and store the lubricating oil of connecting rob bushing oil inlet c inflows by gravity.Meanwhile,
Connecting rob bushing oil groove 2 extends transversely through connecting rob bushing, is conducive to lubricating oil to be spread comprehensively in connecting rob bushing inner surface.
The foregoing description to specific illustrative embodiment of the present utility model be in order to illustrate and illustration purpose.These
Description is not wishing to for the utility model to be defined to disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can carry out
It is many to change and change.The purpose of selecting and describing the exemplary embodiment is that explaining certain principles of the present utility model
And its practical application, so that those skilled in the art can realize and utilize a variety of examples of the present utility model
Property embodiment and a variety of selections and change.Scope of the present utility model is intended to by claims and its waits similar shape
Formula is limited.
Claims (9)
1. a kind of connecting rob bushing, it is characterised in that the inwall of the connecting rob bushing is provided with band shape oil groove, the band shape oil groove is in
Middle part less than two ends bending, the two ends with shape oil groove and the edges at two ends of the connecting rob bushing be formed through into
Hydraulic fluid port, width of the width more than the middle part with shape oil groove at the two ends oil inlet with shape oil groove.
2. connecting rob bushing according to claim 1, it is characterised in that the upside cell wall with shape oil groove and the band shape
The downside cell wall of oil groove is arc, and the arc radius of the downside cell wall are 4-6 times of the arc radius of the upside cell wall.
3. connecting rob bushing according to claim 2, it is characterised in that the arc radius 5-9mm of the upside cell wall.
4. connecting rob bushing according to claim 3, it is characterised in that the minimum point of the downside cell wall and the upper side channel
Projector distance between the minimum point of wall is not less than 5mm.
5. connecting rob bushing according to claim 4, it is characterised in that the groove depth with shape oil groove is 1-1.5mm.
6. connecting rob bushing according to claim 1, it is characterised in that the width of the upper side wall of the connecting rob bushing is more than institute
State the width of the lower wall of connecting rob bushing, the inner surface that the upper side wall is located at shape oil groove.
7. connecting rob bushing according to claim 6, it is characterised in that the band shape oil groove is front and rear right on the upper side wall
Claim to set two.
8. connecting rob bushing according to claim 4, it is characterised in that the band shape oil groove（21）Upside cell wall two ends
Projection angle X=10~25 °.
9. connecting rob bushing according to claim 4, it is characterised in that the band shape oil groove（21）Downside cell wall edge with
Projection angle Y=50~53 ° of vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621481770.3U CN206290567U (en) | 2016-12-30 | 2016-12-30 | Connecting rob bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621481770.3U CN206290567U (en) | 2016-12-30 | 2016-12-30 | Connecting rob bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206290567U true CN206290567U (en) | 2017-06-30 |
Family
ID=59098689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621481770.3U Expired - Fee Related CN206290567U (en) | 2016-12-30 | 2016-12-30 | Connecting rob bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206290567U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763126A (en) * | 2016-12-30 | 2017-05-31 | 广西玉柴机器股份有限公司 | Connecting rob bushing |
-
2016
- 2016-12-30 CN CN201621481770.3U patent/CN206290567U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763126A (en) * | 2016-12-30 | 2017-05-31 | 广西玉柴机器股份有限公司 | Connecting rob bushing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170630 Termination date: 20211230 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |