CN207538883U - It is a kind of to prevent the air valve structure that air valve bridge comes off - Google Patents
It is a kind of to prevent the air valve structure that air valve bridge comes off Download PDFInfo
- Publication number
- CN207538883U CN207538883U CN201721617550.3U CN201721617550U CN207538883U CN 207538883 U CN207538883 U CN 207538883U CN 201721617550 U CN201721617550 U CN 201721617550U CN 207538883 U CN207538883 U CN 207538883U
- Authority
- CN
- China
- Prior art keywords
- air valve
- lever attachment
- baffle plate
- lower baffle
- valve bridge
- 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
Links
Abstract
The utility model discloses a kind of air valve structures for preventing air valve bridge from coming off, including air valve bridge and valve stem, the air valve bridge includes air valve bridge main body and lower baffle plate, on the downside of the air valve bridge main body valve lever attachment hole is respectively provided at left and right ends, straight slot is equipped between described two valve lever attachment holes, the lower baffle plate is removably mounted in the straight slot.The valve lever attachment hole is equipped with the recess to extend internally at upper wall, and the both ends of the lower baffle plate coordinate respectively with both sides valve lever attachment hole forms containing groove in the recess.The valve stem upper surface is equipped with the lug boss to extend radially outwardly, and the lug boss can be put into the containing groove.The utility model can prevent air valve bridge from coming off, moreover it is possible to valve stem be limited, installation is simple, stable structure.
Description
Technical field
The utility model belongs to technical field of engines, and in particular to a kind of to prevent the air valve structure that air valve bridge comes off.
Background technology
The valve assembly of existing multivalve engine, air valve bridge are mounted on valve stem, do not prevent the measure to come off,
Run at high speed under automobile towing astern, lubricating system aging leads to insufficient lubrication or air valve drop lag etc. under the conditions of, air valve bridge
It can be thrown out of or come off, cause engine that critical failure occurs.
Utility model content
For the deficiency in the presence of the prior art, the utility model provide one kind can prevent air valve bridge from coming off, energy
It is enough that valve stem is limited, simple, stable structure air valve structure is installed.
A kind of to prevent the air valve structure that air valve bridge comes off, including air valve bridge and valve stem, the air valve bridge includes air valve bridge
Main body and lower baffle plate, the air valve bridge main body downside is respectively provided with a valve lever attachment hole at left and right ends, described two
Straight slot is equipped between valve lever attachment hole, the lower baffle plate is removably mounted in the straight slot.The valve lever attachment hole
The recess to extend internally is equipped at upper wall, the both ends of the lower baffle plate coordinate with both sides valve lever attachment hole described respectively
Recess forms containing groove.The valve stem upper surface is equipped with the lug boss to extend radially outwardly, and the lug boss can be put
Enter in the containing groove.
Further, the centre of the air valve bridge main body and lower baffle plate is respectively equipped with corresponding threaded hole, the air valve bridge
Main body and lower baffle plate are bolted.
Further, the lower baffle plate both ends are arc-shaped respectively, the center of circle of the circular arc respectively with the circular arc pair
On the axial line of valve lever attachment hole answered, the radius of the circular arc is equal with the radius of the valve lever attachment hole.
Further, the side wall that the groove extends internally is arc-shaped, and the center of circle of the circular arc is in valve lever attachment hole
Axial line on.
Compared with the prior art, the utility model has the advantages that：
1st, the utility model sets lug boss to be closed with the recesses on valve lever attachment hole on valve stem, can be effective
It prevents air valve bridge from coming off from valve stem, reduces the probability of failure of air valve structure；
2nd, the utility model employs split type air valve bridge structure, and installation is simple, and stable structure can be effectively to valve
Bar is limited；
3rd, the arc that the shape at lower baffle plate both ends is answered in pairs with valve lever attachment hole in the utility model is being installed and is being used
Shi Buhui hampers valve stem.
Description of the drawings
Fig. 1 is the utility model air valve bridge cross-sectional view of the structure；
Fig. 2 is the utility model air valve bridge bottom view；
Fig. 3 is the utility model valve stem structure diagram.
Wherein, 1- air valve bridges main body, 2- lower baffle plates, 3- valve lever attachment holes, 4- containing grooves, 5- bolts, 6- lug bosses.
Specific embodiment
In order to which the technical means, creative features, achievable purpose and effectiveness for realizing utility model are easy to understand, below
With reference to being specifically illustrating, the utility model is expanded on further.
A kind of to prevent the air valve structure that air valve bridge comes off, including air valve bridge and valve stem, the air valve bridge includes air valve bridge
Main body 1 and lower baffle plate 2,1 downside of air valve bridge main body is respectively provided with a valve lever attachment hole 3 at left and right ends, described
Straight slot is equipped between two valve lever attachment holes 3, the lower baffle plate 2 is removably mounted in the straight slot.The valve stem
Connecting hole 3 is equipped with the recess that extends internally at upper wall, the both ends of the lower baffle plate 2 respectively with both sides valve lever attachment hole 3
Cooperation forms containing groove 4 in the recess.The valve stem upper surface is equipped with the lug boss 6 to extend radially outwardly, described
Lug boss 6 can be put into the containing groove 4.The valve stem is gap-matched with the valve lever attachment hole 3.
When this air valve structure when in use, first the lower baffle plate is removed from air valve bridge main body, then by the convex of valve stem
The recessed position of the portion of rising alignment valve lever attachment hole is put into, and finally reinstalls the lower baffle plate.So, the gas
Door rod is just limited under the cooperation of lug boss and containing groove in the valve lever attachment hole, even if encounter insufficient lubrication or
Situations such as person's air valve drop lags can come off without worry air valve bridge from valve stem top, significantly reduce air valve structure appearance
The probability of failure.In addition, split type air valve bridge structure is not only installed simply, moreover it is possible to play the role of limiting to valve stem.
As a further optimization of the scheme , the air valve bridge main body 1 is respectively equipped with corresponding screw thread with the centre of lower baffle plate 2
Hole, the air valve bridge main body 1 and lower baffle plate 2 are connected by bolt 5.
So, very simple easily lower baffle plate can be installed or be removed, it also can be by the setting of threaded hole and right
Lower baffle plate is accurately positioned together.
As a further optimization of the scheme , 2 both ends of lower baffle plate are arc-shaped respectively, the center of circle of the circular arc exists respectively
On the axial line of valve lever attachment hole 3 corresponding with the circular arc, the radius of the circular arc and the half of the valve lever attachment hole 3
Diameter is equal.
So, lower baffle plate supplements valve lever attachment hole complete round into one, will not in installation and use
There is any obstruction to valve stem, do not interfere with the use of valve stem.
As a further optimization of the scheme , the side wall that the containing groove 4 extends internally is arc-shaped, the circle of the circular arc
The heart is on the axial line of valve lever attachment hole 3.
When valve stem is packed into valve lever attachment hole operational obstruction can not occur for setting in this way, allow valve stem both
It cannot will not be fixed in connecting hole with being intended to rotate in connecting hole.
Above description is merely a prefered embodiment of the utility model, on the scope of protection of the utility model is not limited in
Embodiment is stated, every technical solution for belonging to the utility model principle belongs to the scope of protection of the utility model.For this
For the technical staff in field, several improvement for being carried out under the premise of the principle for not departing from the utility model, these improvement
It should be regarded as the scope of protection of the utility model.
Claims (4)
1. a kind of prevent the air valve structure that air valve bridge comes off, including air valve bridge and valve stem, it is characterised in that：The air valve bridge packet
Air valve bridge main body and lower baffle plate are included, a valve lever attachment hole is respectively provided at left and right ends on the downside of the air valve bridge main body,
Straight slot is equipped between described two valve lever attachment holes, the lower baffle plate is removably mounted in the straight slot；The valve
Lever attachment hole is equipped with the recess to extend internally at upper wall, and the both ends of the lower baffle plate are matched respectively with both sides valve lever attachment hole
It closes and forms containing groove in the recess；The valve stem upper surface is equipped with the lug boss to extend radially outwardly, the protrusion
Portion can be put into the containing groove.
2. a kind of the air valve structure that air valve bridge comes off is prevented according to claim 1, it is characterised in that：The air valve bridge master
The centre of body and lower baffle plate is respectively equipped with corresponding threaded hole, and the air valve bridge main body and lower baffle plate are bolted.
3. a kind of the air valve structure that air valve bridge comes off is prevented according to claim 1, it is characterised in that：The lower baffle plate two
End is arc-shaped respectively, and the center of circle of the circular arc is respectively on the axial line of valve lever attachment hole corresponding with the circular arc, institute
The radius for stating circular arc is equal with the radius of the valve lever attachment hole.
4. a kind of the air valve structure that air valve bridge comes off is prevented according to claim 1, it is characterised in that：The groove is inside
The side wall of extension is arc-shaped, and the center of circle of the circular arc is on the axial line of valve lever attachment hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721617550.3U CN207538883U (en) | 2017-11-28 | 2017-11-28 | It is a kind of to prevent the air valve structure that air valve bridge comes off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721617550.3U CN207538883U (en) | 2017-11-28 | 2017-11-28 | It is a kind of to prevent the air valve structure that air valve bridge comes off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207538883U true CN207538883U (en) | 2018-06-26 |
Family
ID=62615694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721617550.3U Expired - Fee Related CN207538883U (en) | 2017-11-28 | 2017-11-28 | It is a kind of to prevent the air valve structure that air valve bridge comes off |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207538883U (en) |
-
2017
- 2017-11-28 CN CN201721617550.3U patent/CN207538883U/en not_active Expired - Fee Related
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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: 20180626 Termination date: 20191128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |