CN206617201U - Valve guide frame with limit function - Google Patents
Valve guide frame with limit function Download PDFInfo
- Publication number
- CN206617201U CN206617201U CN201720364019.3U CN201720364019U CN206617201U CN 206617201 U CN206617201 U CN 206617201U CN 201720364019 U CN201720364019 U CN 201720364019U CN 206617201 U CN206617201 U CN 206617201U
- Authority
- CN
- China
- Prior art keywords
- valve guide
- valve
- guide bushing
- valve stem
- draw runner
- 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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- Lift Valve (AREA)
Abstract
The utility model discloses the valve guide frame with limit function, including valve stem and valve guide bushing, fit clearance between the valve stem and valve guide bushing is 0.15~0.25mm, valve stem outer wall is provided with a draw runner, the draw runner is integrally formed with valve stem by electric smelting increasing material manufacturing technique, and the axis of draw runner and valve stem is parallel to each other, the strip groove of one and valve guide bushing diameter parallel are also provided with valve guide bushing inwall, the strip groove is mutually matched with draw runner and fit clearance is 0.025 0.070mm.The utility model solves the problem of valve guide bushing locking failure easily occurs with valve stem.
Description
Technical field
The utility model is related to automotive engine valves system field, and in particular to the valve with limit function is oriented to knot
Structure.
Background technology
Valve stem seal is the key component for starting gate system, and it is gentle to be maintained at low-level to motor exhaust exhaust
Keep sufficient lubrication significant in door guide rod.In valve stem seal, usually there is valve guide bushing and occur with valve stem
Locking failure.Valve guide bushing of the prior art locking failure occurs with valve stem typically has three kinds of reasons to cause：(1) by more
The engine of valve guide bushing and neostigma is changed, valve guide bushing is not matched by matching requirements, and being closely assembled occurred in fit clearance, and started
Machine temperature rises after engine, and valve stem reduces with catheter interstitial causes locking.(2) engine used by suitable one disconnected time
Normal in use, valve stem and conduit locking failure occur suddenly, its main cause is insufficient lubrication or critical shortage profit
Caused by lubricating oil, also occur sometimes causes valve fuel feeding not enough because oil leab is blocked, or non lubricant oil causes valve stem and conduit
Locking.(3) many vehicles do not focus on conventional maintenance, to engine without rational maintenance, the cooperation of valve stem and conduit
Gap looseness, more than operating limit, the straight line for causing valve not fixed moves up and down, produces larger vibration, make valve stem
On carbon distribution it is vibrated come off, fall the stuck valve of people's conduit, it is serious by conduit in the lump liftout tank body canal hole.
Utility model content
The purpose of this utility model is to provide the valve guide frame with limit function, solution valve guide bushing and valve
The problem of easily there is locking failure in bar.
The utility model is achieved through the following technical solutions：
Valve guide frame with limit function, including valve stem and valve guide bushing, the valve stem and valve guide bushing
Between fit clearance be 0.15~0.25mm, valve stem outer wall is provided with a draw runner, the draw runner passes through with valve stem
Electric smelting increasing material manufacturing technique is integrally formed, and the axis of draw runner and valve stem is parallel to each other, and one is also provided with valve guide bushing inwall
The individual strip groove with valve guide bushing diameter parallel, the strip groove is mutually matched with draw runner and fit clearance is 0.025-
0.070mm.Further, the fit clearance of valve stem and valve guide bushing of the prior art is usually more than 0.2mm and is accomplished by dimension
Valve stem or conduit are repaiied or change, once because the fit clearance looseness of valve stem and valve guide bushing, will more than operating limit
The straight line for causing valve stem not fixed moves up and down, and produces larger vibration, makes the carbon distribution on valve stem is vibrated to come off, fall
Enter the stuck valve of valve guide bushing；But if the fit clearance between valve stem and valve guide bushing assembles tension, valve stem is led with valve
The problem of having lack of lubrication between pipe, and temperature rises after engine start, and valve stem expansion is contracted with catheter interstitial
It is small, it finally will also result in locking.The utility model devises a kind of new valve guidance set, in existing valve guide bushing and
A guiding mechanism is further added by between valve stem, i.e., a strip groove is opened on valve guide bushing, draw runner is set on valve stem,
Draw runner is mutually matched with bar shaped chute, and such valve stem can be slided up and down along strip groove, by between valve stem and valve guide bushing
Fit clearance be arranged on 0.15~0.25mm, both overcome the fit clearance of valve stem in the prior art and valve guide bushing generally to surpass
0.2mm is crossed to be accomplished by repairing or change valve stem or the problem of conduit, also ensure that between valve stem and valve guide bushing has enough
Gap accommodate lubricant lubrication and also will not permeability it is excessive；Even if the fit clearance of the valve stem and valve guide bushing in this programme
Looseness, can also ensure that valve stem moves up and down along fixed straight line, it is to avoid polarization makes the carbon distribution on valve stem is vibrated to come off, and makes
Into valve guide bushing and valve stem locking.Because the contact surface between strip groove and draw runner is smaller, by strip groove and draw runner
Fit clearance is designed between 0.025-0.070mm, and lubricant is filled in the profit that strip groove and draw runner are ensured that in gap
It is sliding.Electric smelting increasing material manufacturing technique have the advantages that integration good, excellent material performance, it is uniform, without dimensional effect, draw runner with
Valve stem is integrally formed by electric smelting increasing material manufacturing technique, improves the overall structure performance of draw runner and valve stem.
It is preferred that, the concave surface of the strip groove is a smooth arcwall face.Arcwall face be conducive to reduce valve stem and
Abrasion between valve guide bushing.
Also include snap ring, an annular groove, the annular groove and mutual of snap ring are also provided with valve guide bushing outer wall
Match somebody with somebody, and the center line of annular groove and the axis of valve guide bushing are located at same straight line.Further, it is guarantee valve guide bushing and gas
Cylinder cap is stable, it will usually increase snap ring outside valve guide bushing, but between snap ring of the prior art and valve guide bushing again less
It is stable, easily with respect to sliding friction, heat is produced, this damage to valve guide bushing is very big.The utility model is outside valve guide bushing
Wall is also provided with an annular groove, and the annular groove is mutually matched with snap ring so that snap ring is limited in annular groove, is enhanced
The stability of snap ring and annular groove.
It is preferred that, it is additionally provided with several in the inwall of annular groove raised.Set several raised in annular groove
Further enhance the stability between snap ring and valve guide bushing, and the gap between projection is conducive to valve guide bushing to dissipate
Heat.
The utility model compared with prior art, has the following advantages and advantages：
The utility model has the valve guide frame of limit function, increases again between existing valve guide bushing and valve stem
Plus a guiding mechanism, i.e., a strip groove is opened on valve guide bushing, draw runner, draw runner and bar shaped chute are set on valve stem
It is mutually matched, such valve stem can be slided up and down along strip groove, the fit clearance between valve stem and valve guide bushing is set
In 0.15~0.25mm, both overcame the fit clearance of valve stem in the prior art and valve guide bushing to be usually more than 0.2mm and be accomplished by
The problem of maintenance or replacing valve stem or conduit, also ensure that between valve stem and valve guide bushing has enough gaps to accommodate lubricant
Lubrication, it is to avoid polarization makes the carbon distribution on valve stem is vibrated to come off, causes the problem of valve guide bushing is with valve stem locking.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the utility model embodiment, constitutes the one of the application
Part, does not constitute the restriction to the utility model embodiment.In the accompanying drawings：
Fig. 1 is the utility model structural representation；
Fig. 2 is the structural representation of the utility model valve guide bushing.
Mark and corresponding parts title in accompanying drawing：
1- valve stems, 2- valve guide bushings, 3- draw runners, 4- annular grooves, 5- snap rings, 6- is raised.
Embodiment
For the purpose of this utility model, technical scheme and advantage is more clearly understood, with reference to embodiment and accompanying drawing,
The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this
Utility model, is not intended as limiting of the present utility model.
Embodiment 1
As shown in Figure 1, 2, the utility model has the valve guide frame of limit function, including valve stem 1 and valve are led
Pipe 2, the fit clearance between the valve stem 1 and valve guide bushing 2 is 0.15mm, and the outer wall of valve stem 1 is provided with a draw runner
3, the draw runner 3 is integrally formed with valve stem 1 by electric smelting increasing material manufacturing technique, and draw runner 3 and the axis of valve stem 1 are mutually equal
OK, the strip groove of one and the diameter parallel of valve guide bushing 2, the strip groove and draw runner 3 are also provided with the inwall of valve guide bushing 2
It is mutually matched and fit clearance is 0.025mm.The concave surface of the strip groove is a smooth arcwall face.Also include snap ring 5,
An annular groove 4 is also provided with the outer wall of valve guide bushing 2, the annular groove 4 is mutually matched with snap ring 5, and annular groove 4
The axis of center line and valve guide bushing 2 is located at same straight line.Several projections 6 are additionally provided with the inwall of annular groove 4.Pass through
Above structure solves the problem of valve guide bushing locking failure easily occurs with valve stem.
Embodiment 2
As shown in Figure 1, 2, the utility model has the valve guide frame of limit function, and the valve with limit function is led
To structure, including valve stem 1 and valve guide bushing 2, the fit clearance between the valve stem 1 and valve guide bushing 2 is 0.25mm,
The outer wall of valve stem 1 is provided with a draw runner 3, and the draw runner 3 is integrally formed with valve stem 1 by electric smelting increasing material manufacturing technique, and
The axis of draw runner 3 and valve stem 1 is parallel to each other, and the bar of one and the diameter parallel of valve guide bushing 2 are also provided with the inwall of valve guide bushing 2
Connected in star, the strip groove is mutually matched with draw runner 3 and fit clearance is 0.070mm.The concave surface of the strip groove is one
Individual smooth arcwall face.Also include snap ring 5, an annular groove 4 be also provided with the outer wall of valve guide bushing 2, the annular groove 4 with
Snap ring 5 is mutually matched, and the center line of annular groove 4 is located at same straight line with the axis of valve guide bushing 2.In annular groove 4
Inwall is additionally provided with several projections 6.Valve guide bushing is solved by above structure and locking failure easily occurs in valve stem
Problem.
Above-described embodiment, is entered to the purpose of this utility model, technical scheme and beneficial effect
One step is described in detail, be should be understood that and be the foregoing is only embodiment of the present utility model, is not used to limit
Fixed protection domain of the present utility model, all any modifications within spirit of the present utility model and principle, made, is equally replaced
Change, improve, should be included within protection domain of the present utility model.
Claims (4)
1. the valve guide frame with limit function, including valve stem (1) and valve guide bushing (2), it is characterised in that the gas
Fit clearance between door rod (1) and valve guide bushing (2) is 0.15~0.25mm, and in valve stem (1), outer wall is provided with a cunning
Bar (3), the draw runner (3) is integrally formed with valve stem (1) by electric smelting increasing material manufacturing technique, and draw runner (3) and valve stem (1)
Axis it is parallel to each other, be also provided with the strip groove of one and valve guide bushing (2) diameter parallel, institute in valve guide bushing (2) inwall
State strip groove and draw runner (3) is mutually matched and fit clearance is 0.025-0.070mm.
2. the valve guide frame according to claim 1 with limit function, it is characterised in that the strip groove
Concave surface is a smooth arcwall face.
3. the valve guide frame according to claim 1 with limit function, it is characterised in that also including snap ring (5),
An annular groove (4) is also provided with valve guide bushing (2) outer wall, the annular groove (4) is mutually matched with snap ring (5), and ring
The center line of connected in star (4) is located at same straight line with the axis of valve guide bushing (2).
4. the valve guide frame according to claim 3 with limit function, it is characterised in that in annular groove (4)
Inwall be additionally provided with several raised (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720364019.3U CN206617201U (en) | 2017-04-07 | 2017-04-07 | Valve guide frame with limit function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720364019.3U CN206617201U (en) | 2017-04-07 | 2017-04-07 | Valve guide frame with limit function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206617201U true CN206617201U (en) | 2017-11-07 |
Family
ID=60235730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720364019.3U Expired - Fee Related CN206617201U (en) | 2017-04-07 | 2017-04-07 | Valve guide frame with limit function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206617201U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988823A (en) * | 2017-04-07 | 2017-07-28 | 四川森洁燃气设备有限公司 | A kind of anti-lock valve sealing guidance set |
-
2017
- 2017-04-07 CN CN201720364019.3U patent/CN206617201U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988823A (en) * | 2017-04-07 | 2017-07-28 | 四川森洁燃气设备有限公司 | A kind of anti-lock valve sealing guidance set |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171107 Termination date: 20180407 |