CN204024847U - Piston assembly, piston and piston ring - Google Patents
Piston assembly, piston and piston ring Download PDFInfo
- Publication number
- CN204024847U CN204024847U CN201420308240.3U CN201420308240U CN204024847U CN 204024847 U CN204024847 U CN 204024847U CN 201420308240 U CN201420308240 U CN 201420308240U CN 204024847 U CN204024847 U CN 204024847U
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- Prior art keywords
- piston ring
- piston
- ring groove
- axial
- utility
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model provides a kind of piston assembly, and it comprises: piston; The piston ring groove arranging around the outer surface of described piston; And the piston ring that is arranged in described piston ring groove; Wherein, between described piston ring and described piston ring groove, exist and axially contact for axial seal.Further, the utility model also provides a kind of piston ring and a kind of piston.Piston assembly of the present utility model, piston and piston ring have sealing and the frizing performance of improvement.
Description
Technical field
The utility model relates to piston technical field, and more specifically, the utility model relates to piston assembly, piston and the piston ring for motor.
Background technique
As everyone knows, piston and piston ring play vital effect in motor.The quality of the sealing of piston and rings and frizing performance impact motor, if the sealing of piston and piston ring is not good, can occur to alter on gas leakage and machine oil, affect the power of motor, and can cause the shake of motor, and the problem such as consumption of lubricating oil is too fast, these all can affect user's experience.
With environmental protection and the energy requirement of increasingly stringent, motor is tending towards to the development of small displacement high-performance, and high performance motor means high pressure of explosion conventionally, and this also has higher requirement to the sealing of piston assembly and frizing performance.
Conventional piston assembly has been shown in Fig. 1, and it comprises piston 11 and piston ring 12, and piston ring 12 is positioned in the piston ring groove arranging around the outer surface of piston 11.With arrow, show gas in the cylinder pressure to piston 11 in the drawings.In conventional piston assembly, piston ring 12 adopts rectangular cross-sections design, and piston ring groove in piston 11 also adopts corresponding rectangular cross-section design.Generally, due to the gas pressure in cylinder, the lower surface close contact of piston ring 12 and piston ring groove, thus sealing is provided, block thus the leakage paths of firing chamber gas and machine oil on alter path.But due at piston 11 duration of works, piston ring 12 is subject to the effect of complicated axial force, comprise, gas pressure and the reciprocating inertial force of piston ring etc., piston ring 12 may depart from the lower surface of piston ring groove, form to suspend or the state that trembles (visible in Fig. 2 and Fig. 3), cause altering on gas leak path as shown by the arrows in Figure 2 and machine oil as shown by the arrows in Figure 3 the appearance in path.Especially, at the compression stroke end of piston, the moment that working stroke starts, the inertial force making progress being subject to due to piston ring 12 is greater than downward gas pressure, make piston ring 12 depart from the lower surface of piston ring grooves, thus cause the leakage of firing chamber gas and machine oil on alter phenomenon.
Model utility content
The technical problems to be solved in the utility model is, the sealing of the improvement between piston ring and piston is provided, thereby reduces as much as possible at motor run duration, especially on the Leakage Gas of piston ring when suspending or trembling state and machine oil, alters.
The utility model, by providing piston assembly, piston and the piston ring of innovation to solve above-mentioned technical problem, particularly, according to one side of the present utility model, provides a kind of piston assembly, and it comprises:
Piston;
The piston ring groove arranging around the outer surface of described piston; And
Be arranged in the piston ring of described piston ring groove;
Wherein, between described piston ring and described piston ring groove, exist and axially contact for axial seal.
Alternatively, the sectional shape of described piston ring is L shaped, and it has piston ring axial surface and piston ring radial surface; Accordingly, the sectional shape of described piston ring groove is also L shaped, it has corresponding piston ring groove axial surface and piston ring groove radial surface, and the described axial contact for axial seal is contacted and forms with piston ring groove axial surface by described piston ring axial surface.
Alternatively, at described piston assembly duration of work, described piston ring radial surface contacts with described piston ring groove radial surface, is formed for the radially surface of contact of radial seal.
According on the other hand of the present utility model, a kind of piston ring is provided, wherein, described piston ring has the surface for axial seal.
Alternatively, the sectional shape of described piston ring is L shaped, and it has piston ring axial surface and piston ring radial surface, and wherein said piston ring axial surface is for axial seal.
Can revolve ground, described piston ring radial surface is for radial seal.
According to of the present utility model, provide a kind of piston more on the one hand, around the outer surface of described piston, be provided with piston ring groove, wherein, described piston ring groove has the surface for axial seal.
Alternatively, the sectional shape of described piston ring groove is L shaped, and it has piston ring groove axial surface and piston ring groove radial surface, and wherein said piston ring groove axial surface is for axial seal.
Alternatively, described piston ring groove radial surface is for radial seal.
Usefulness of the present utility model is: by piston assembly, piston and the piston ring of particular design are provided, make at motor run duration, between piston and piston ring, there is all the time axial contact, than only having the radially conventional piston-Piston ring design of contact, the sealing area increasing is provided, has effectively improved on the Leakage Gas of piston ring when suspending or trembling state and machine oil and altered.
Accompanying drawing explanation
With reference to accompanying drawing, disclosure of the present utility model will be easier to understand.Be to be understood that: these accompanying drawings are the object for illustrating only, and is not intended to protection domain of the present utility model to be construed as limiting.In figure:
Fig. 1 is the sectional view of conventional piston assembly;
Fig. 2 is the partial section of conventional piston assembly, wherein shows when the gas leak path of conventional piston assembly when suspending or trembling state;
Fig. 3 is the partial section of conventional piston assembly, wherein shows on the machine oil of conventional piston assembly when suspending or trembling state and alters path;
Fig. 4 is the partial section of example piston assembly of the present utility model, wherein also shows the cross section structure of piston ring of the present utility model and the gas leak path being blocked;
Fig. 5 is the partial section of example piston assembly of the present utility model, wherein also shows on the cross section structure of piston ring of the present utility model and the machine oil that is blocked and alters path.
Embodiment
For helping those skilled in the art can understand definitely the claimed theme of the utility model, below in conjunction with accompanying drawing, describe embodiment of the present utility model in detail.Succinct in order to compose a piece of writing, below described axial direction refers to the direction of piston movement, and perpendicular to the direction of piston ring place plane, and radial direction refers to the diametric(al) of piston or piston ring.
With reference to figure 4, wherein show the sectional view of example piston assembly of the present utility model.Piston assembly of the present utility model comprises: (a) piston 30; (b) piston ring groove 50 arranging around the outer surface of described piston 30; And the piston ring 40 that (c) is arranged in described piston ring groove 50; Wherein, between described piston ring 40 and described piston ring groove 50, exist and axially contact for axial seal.In preferred embodiment as shown in the figure, example piston assembly of the present utility model comprises piston 30 and piston ring 40, wherein piston ring 40 is positioned in the piston ring groove 50 arranging around the outer surface of piston 30, described piston ring 40 has L shaped cross section, and the piston ring groove 50 described in holding with the piston ring 40 in L shaped cross section has corresponding L shaped cross section.Piston ring 40 has rectangular indentation, has piston ring axial surface 401 and piston ring radial surface 402 at rectangular indentation place; Accordingly, the sectional shape of described piston ring groove 50 is also L shaped, it has corresponding boss, boss place piston ring groove has piston ring groove axial surface 501 and piston ring groove radial surface 502, and the described axial contact for axial seal is contacted and forms with piston ring groove axial surface 501 by described piston ring axial surface 401.A cross section of piston ring 40 is only shown in Fig. 4, but as known in the art, piston ring 40 integral body are roughly ring, and partial-length or the whole length of piston ring 40 have been extended in L shaped cross section.The piston ring 40 in the piston ring groove 50 in L shaped cross section and corresponding L shaped cross section is preferred embodiment of the present utility model, because it is simple in structure, easily manufactured, but those skilled in the art can envision other embodiment under inspiration of the present utility model, for example there is stepped shaft, convex, design with L shaped or side-inverted L shaped prismatic piston ring and the piston ring groove of the utility model turned upside down, therefore the utility model is intended to these to have the configuration of axial seal, be all included in scope of the present utility model.
With reference to figure 4 and Fig. 5, when piston assembly of the present utility model is in the motor run duration various axial forces of same experience and when suspending or trembling state, at least there is axial seal section, i.e. piston ring axial surface 401 and the formed seal section of piston ring groove axial surface 501 laminating.As shown by the arrows in Figure 4, axial seal section has been blocked gas leak path.Meanwhile, when piston ring suspends in certain altitude, piston ring radial surface 402 contacts with piston ring groove radial surface 502, thus formation radial seal section, as shown by the arrows in Figure 5, radial seal section blocked machine oil on alter path.Such design is than the piston ring of conventional rectangular cross-section that only has the radial seal section of upper and lower surface, had more axial seal section, axial seal section can provide sealing in whole engine operation process, this increases the sealing area between piston and piston ring, extend seal section length, make no matter the state of piston ring in engaging with upper and lower surface is still in departing from the suspension of upper and lower surface or the state trembling, all exist seal section to work, come gas leak path and machine oil anti-channeling path between blocking piston ring 40 and piston ring groove 50, sealing and the frizing performance of piston assembly have effectively been improved thus.
In an illustrated embodiment, in piston assembly, there are 3 piston rings, easily understand, the quantity of piston ring can change, in addition, each piston ring in the piston assembly shown in figure adopts L shaped design, but can conceive in alternative, in piston assembly, can have the piston ring of L shaped cross section piston ring of the present utility model and conventional rectangle concurrently, thereby adapt to different application.In addition, it should be noted that piston assembly of the present utility model and piston ring, applicable to the motor car engine of any type, comprise petrol engine and diesel engine.
Specific embodiment described above, only in order more clearly to describe principle of the present utility model, is wherein specialized all parts and principle of the present utility model is easier to understand.In the situation that not departing from scope of the present utility model, those skilled in the art can easily carry out various modifications to the utility model.Therefore should be understood that, scope of the present utility model should not limited by above specific embodiment, and only by appending claims, is limited.
Claims (9)
1. a piston assembly, it comprises:
Piston (30);
The piston ring groove (50) arranging around the outer surface of described piston (30); And
Be arranged in the piston ring (40) of described piston ring groove (50);
It is characterized in that, between described piston ring (40) and described piston ring groove (50), exist and axially contact for axial seal.
2. piston assembly according to claim 1, is characterized in that, the sectional shape of described piston ring (40) is L shaped, and it has piston ring axial surface (401) and piston ring radial surface (402); Accordingly, the sectional shape of described piston ring groove (50) is also L shaped, it has corresponding piston ring groove axial surface (501) and piston ring groove radial surface (502), and the described axial contact for axial seal is contacted and forms with piston ring groove axial surface (501) by described piston ring axial surface (401).
3. piston assembly according to claim 2, is characterized in that, at described piston assembly duration of work, described piston ring radial surface (402) contacts with described piston ring groove radial surface (502), is formed for the radially surface of contact of radial seal.
4. a piston ring, is characterized in that, described piston ring (40) has the surface for axial seal.
5. piston ring according to claim 4, it is characterized in that, the sectional shape of described piston ring (40) is L shaped, and it has piston ring axial surface (401) and piston ring radial surface (402), and wherein said piston ring axial surface (401) is for axial seal.
6. piston ring according to claim 5, is characterized in that, described piston ring radial surface (402) is for radial seal.
7. a piston, is provided with piston ring groove (50) around the outer surface of described piston (30), it is characterized in that, described piston ring groove (50) has the surface for axial seal.
8. piston according to claim 7, it is characterized in that, the sectional shape of described piston ring groove (50) is L shaped, it has piston ring groove axial surface (501) and piston ring groove radial surface (502), and wherein said piston ring groove axial surface (501) is for axial seal.
9. piston according to claim 8, is characterized in that, described piston ring groove radial surface (502) is for radial seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420308240.3U CN204024847U (en) | 2014-06-11 | 2014-06-11 | Piston assembly, piston and piston ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420308240.3U CN204024847U (en) | 2014-06-11 | 2014-06-11 | Piston assembly, piston and piston ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204024847U true CN204024847U (en) | 2014-12-17 |
Family
ID=52064721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420308240.3U Expired - Fee Related CN204024847U (en) | 2014-06-11 | 2014-06-11 | Piston assembly, piston and piston ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204024847U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121851A (en) * | 2016-07-14 | 2016-11-16 | 邹敏 | A kind of piston of L-type annular groove |
-
2014
- 2014-06-11 CN CN201420308240.3U patent/CN204024847U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121851A (en) * | 2016-07-14 | 2016-11-16 | 邹敏 | A kind of piston of L-type annular groove |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |