CN211474286U - Piston structure with variable cross-section sealing leather cup structure - Google Patents
Piston structure with variable cross-section sealing leather cup structure Download PDFInfo
- Publication number
- CN211474286U CN211474286U CN201921463838.9U CN201921463838U CN211474286U CN 211474286 U CN211474286 U CN 211474286U CN 201921463838 U CN201921463838 U CN 201921463838U CN 211474286 U CN211474286 U CN 211474286U
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- Prior art keywords
- piston
- leather cup
- connecting rod
- variable cross
- air inlet
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- Expired - Fee Related
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- 239000010985 leather Substances 0.000 title claims abstract description 49
- 238000007789 sealing Methods 0.000 title claims abstract description 14
- 238000009434 installation Methods 0.000 claims abstract description 23
- 238000012856 packing Methods 0.000 claims 2
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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Abstract
The utility model discloses a piston structure with sealed leather cup structure of variable cross section belongs to piston structure spare part technical field, including cylinder liner, connecting rod and leather cup, the connecting rod is established in the cylinder liner and with cylinder liner clearance fit, the top of connecting rod is equipped with the piston face, the leather cup includes installation face and contact surface, the installation face is established on the piston face, the contact surface slope sets up the edge of installation face, the contact surface with the inboard counterbalance of cylinder liner. The leather cup is adopted to replace a piston ring to be arranged on the outer side of the piston surface of the connecting rod and used for sealing gas in the cylinder sleeve when the connecting rod and the cylinder sleeve do work, the leather cup is used for replacing the piston ring to realize that the piston can provide larger flow when doing work under the condition of the same pressure, the contact area between the piston surface of the connecting rod and the inner side of the cylinder sleeve is reduced, and therefore heat generated by friction is reduced, the temperature in the cylinder is reduced, and the service life of the leather cup is prolonged.
Description
Technical Field
The utility model relates to a piston structure spare part technical field especially relates to a piston structure with variable cross section seals leather cup structure.
Background
The existing air pump is provided with a piston ring on a piston, because the piston ring is a metal elastic ring with larger outward expansion deformation and is assembled in a ring groove with a section corresponding to the piston ring, the reciprocating and rotating piston ring forms sealing between the outer circular surface of the ring and a cylinder as well as between the ring and one side surface of the ring groove by the pressure difference of gas or liquid; because the working condition in the air pump is bad, the piston ring needs to be fixed, and the air tightness caused by the displacement of the piston ring is avoided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a piston structure who has the sealed leather cup structure of variable cross section that airtight is good, life is longer.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a piston structure with sealed leather cup structure of variable cross section, includes cylinder liner, connecting rod and leather cup, and the connecting rod is established in the cylinder liner and with cylinder liner clearance fit, and the top of connecting rod is equipped with the piston face, and the leather cup includes installation face and contact surface, and the installation face is established on the piston face, and the contact surface slope sets up at the edge of installation face, and the contact surface offsets with the inboard of cylinder liner.
The leather cup is adopted to replace a piston ring to be arranged on the outer side of the piston surface of the connecting rod and used for sealing gas in the cylinder sleeve when the connecting rod and the cylinder sleeve do work, the leather cup is used for replacing the piston ring to realize that the piston can provide larger flow when doing work under the condition of the same pressure, the contact area between the piston surface of the connecting rod and the inner side of the cylinder sleeve is reduced, and therefore heat generated by friction is reduced, the temperature in the cylinder is reduced, and the service life of the leather cup is prolonged.
Preferably, the leather cup further comprises a pressing plate, the pressing plate is connected with the piston surface, and the leather cup is arranged between the pressing plate and the piston surface.
The pressing plate is used for fixing the leather cup on the piston surface, the periphery of the leather cup is sleeved on the edge of the pressing plate, the contact part of the leather cup is tightly attached to the inner side of the cylinder sleeve, and the air tightness between the piston surface and the cylinder sleeve is better.
Preferably, the thickness of the contact surface is greater than the thickness of the mounting surface.
Because the contact surface produces the friction with the inboard of cylinder liner at the during operation, consequently the thickness that sets up the contact surface is thicker than the thickness of installation face, extension leather cup life, because the installation face only plays spacing effect to the installation of leather cup, does not cooperate with other spare parts when piston structure during operation, sets up from this that the installation face is thinner, has saved the cost of material.
Preferably, the height of the contact surface is less than the height of the pressure plate.
The contact area of the working surface is reduced, and the heat generated by friction is reduced, so that the temperature in the cylinder is reduced, and the service life of the leather cup is prolonged.
Preferably, the bottom of the pressing plate is provided with a boss protruding downwards, the middle of the mounting surface is provided with a limiting through hole, and the boss corresponds to the limiting through hole.
The clamp plate bottom is equipped with the boss for correspond with the spacing through-hole of the installation face of leather cup, realize spacing to the leather cup, avoid the leather cup at the during operation horizontal migration.
Preferably, the bottom of the pressing plate is further provided with a convex strip, the convex strip is arranged around the boss, and the convex strip abuts against the mounting surface.
The bottom of clamp plate is provided with the sand grip for compress tightly the installation face, avoid the installation face to take place to remove when the connecting rod activity.
Preferably, the top of the pressing plate is provided with an air inlet valve plate, the pressing plate and the piston surface are provided with two air inlet holes, and two ends of the air inlet valve plate are respectively attached to the upper ends of the two air inlet holes.
The air inlet valve plate is used for achieving air inlet of the piston structure, when the air inlet valve plate is in an initial state, two ends of the air inlet valve plate are attached to the upper ends of the two air inlet holes respectively, when the connecting rod and the piston surface of the connecting rod move away from the cylinder sleeve, air enters the air inlet holes to generate pressure, the air inlet valve plate deforms and tilts upwards, and the air can enter the cylinder sleeve through the air inlet holes.
Preferably, the valve screw is arranged in the middle of the air inlet valve plate and is in threaded connection with the air inlet valve plate and the piston surface.
The valve screw is used for fixing the air inlet valve plate on the surface of the pressing plate, and the valve screw is arranged in the middle of the air inlet valve plate, so that the air inlet valve plate is fixed on the surface of the pressing plate, and two ends of the air inlet valve plate can move.
The utility model has the advantages that: the leather cup is adopted to replace a piston ring to be arranged on the outer side of the piston surface of the connecting rod and used for sealing gas in the cylinder sleeve when the connecting rod and the cylinder sleeve do work, the leather cup is used for replacing the piston ring to realize that the piston can provide larger flow when doing work under the condition of the same pressure, the contact area between the piston surface of the connecting rod and the inner side of the cylinder sleeve is reduced, and therefore heat generated by friction is reduced, the temperature in the cylinder is reduced, and the service life of the leather cup is prolonged.
Drawings
The accompanying drawings are provided to further illustrate the present invention, but the content in the accompanying drawings does not constitute any limitation to the present invention.
Fig. 1 is a schematic overall structure diagram of one embodiment of the present invention;
FIG. 2 is a schematic structural view of a cup according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of one embodiment of the present invention;
fig. 4 is a partial enlarged view of fig. 3 according to one embodiment of the present invention.
Wherein: the piston type cylinder liner comprises a cylinder liner 1, a connecting rod 2, a leather cup 3, a piston surface 21, a mounting surface 31, a contact surface 32, a pressure plate 4, a boss 41, a limiting through hole 33, a convex strip 42, an air inlet valve plate 43, an air inlet 211 and a valve screw 44.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1 and 2, the piston structure with the variable cross-section sealing cup structure of the embodiment includes a cylinder sleeve 1, a connecting rod 2 and a cup 3, the connecting rod 2 is arranged in the cylinder sleeve 1 and movably matched with the cylinder sleeve 1, a piston surface 21 is arranged at the top of the connecting rod 2, the cup 3 includes an installation surface 31 and a contact surface 32, the installation surface 31 is arranged on the piston surface 21, the contact surface 32 is obliquely arranged at the edge of the installation surface 31, and the contact surface 32 is abutted to the inner side of the cylinder sleeve 1.
Adopt leather cup 3 to replace the piston ring setting to be used for sealing to the inside gas of cylinder liner 1 when connecting rod 2 and cylinder liner 1 do work in the outside of the piston face 21 of connecting rod 2, replaced the piston ring with leather cup 3 and realized under the condition of same pressure, the piston can provide bigger flow when doing work, reduced the piston face 21 and the inboard area of contact of cylinder liner 1 of connecting rod 2, consequently the heat that the friction produced reduces the temperature in the cylinder, be favorable to prolonging leather cup 3 life.
The leather cup is characterized by further comprising a pressing plate 4, the pressing plate 4 is connected with the piston surface 21, and the leather cup 3 is arranged between the pressing plate 4 and the piston surface 21.
The pressing plate 4 is used for fixing the leather cup 3 on the piston surface 21, the periphery of the leather cup 3 is sleeved on the edge of the pressing plate 4, the contact part of the leather cup 3 is tightly attached to the inner side of the cylinder sleeve 1, and the piston surface 21 and the cylinder sleeve 1 are better in air tightness.
The thickness of the contact surface 32 is greater than the thickness of the mounting surface 31.
Because the contact surface 32 produces the friction with the inboard of cylinder liner 1 when the during operation, consequently set up the thickness of contact surface 32 and be thicker than the thickness of installation face 31, extension leather cup 3 life, because installation face 31 only plays spacing effect to leather cup 3's installation, do not cooperate with other spare parts when piston structure during operation, set up installation face 31 from this and be thinner, saved the cost of material.
The ratio of the thickness of the contact surface 32 to the mounting surface 31 is set to 2: 1-10: 7.
the height of the contact surface 32 is less than the height of the pressure plate 4.
The contact area of the working surface is reduced, and the heat generated by friction is reduced, so that the temperature in the cylinder is reduced, and the service life of the leather cup 3 is prolonged.
The bottom of the pressure plate 4 is provided with a boss 41 protruding downwards, the middle part of the mounting surface 31 is provided with a limit through hole 33, and the boss 41 corresponds to the limit through hole 33.
The bottom of the pressing plate 4 is provided with a boss 41 which is used for corresponding to the limiting through hole 33 of the mounting surface 31 of the leather cup 3, limiting of the leather cup 3 is achieved, and the leather cup 3 is prevented from moving horizontally during working.
The bottom of the pressing plate 4 is further provided with a convex strip 42, the convex strip 42 is arranged around the boss 41, and the convex strip 42 is abutted against the mounting surface 31.
The bottom of the pressure plate 4 is provided with a convex strip 42 for compressing the mounting surface 31 and preventing the mounting surface 31 from moving when the connecting rod 2 moves.
The top of clamp plate 4 is equipped with air inlet valve block 43, has seted up two inlet holes 211 on clamp plate 4 and the piston face 21, and the both ends of air inlet valve block 43 are laminated with the upper end of two inlet holes 211 respectively.
The air inlet valve plate 43 is used for realizing air inlet of the piston structure, when the air inlet valve plate 43 is in an initial state, two ends of the air inlet valve plate 43 are respectively attached to the upper ends of the two air inlet holes 211, when the connecting rod 2 and the piston surface 21 of the connecting rod move away from the cylinder sleeve 1, air enters the air inlet holes 211 to generate pressure, the air inlet valve plate 43 deforms and tilts upwards, and the air can enter the cylinder sleeve through the air inlet holes 211.
The valve screw 44 is arranged in the middle of the air inlet valve plate 43 and is in threaded connection with the air inlet valve plate 43 and the piston surface 21.
The valve screw 44 is used for fixing the air inlet valve sheet 43 on the surface of the pressure plate 4, and the valve screw 44 is arranged in the middle of the air inlet valve sheet 43, so that the air inlet valve sheet 43 is fixed on the surface of the pressure plate 4, and two ends of the air inlet valve sheet 43 can move.
The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.
Claims (8)
1. The piston structure with the variable-section sealing leather cup structure is characterized by comprising a cylinder sleeve, a connecting rod and a leather cup, wherein the connecting rod is arranged in the cylinder sleeve and is movably matched with the cylinder sleeve, a piston surface is arranged at the top of the connecting rod, the leather cup comprises an installation surface and a contact surface, the installation surface is arranged on the piston surface, the contact surface is obliquely arranged at the edge of the installation surface, and the contact surface is abutted against the inner side of the cylinder sleeve.
2. The piston structure with a variable cross-section sealing cup structure of claim 1, further comprising a pressure plate, wherein the pressure plate is connected with the piston face, and the cup is arranged between the pressure plate and the piston face.
3. The piston structure with a variable cross-section packing cup structure of claim 1 wherein said contact surface has a thickness greater than a thickness of said mounting surface.
4. The piston structure with a variable cross-section packing cup structure of claim 2, wherein the height of said contact surface is less than the height of said pressure plate.
5. The piston structure with the variable cross-section sealing cup structure as claimed in claim 2, wherein a boss protruding downwards is arranged at the bottom of the pressure plate, a limiting through hole is arranged in the middle of the mounting surface, and the boss corresponds to the limiting through hole.
6. The piston structure with a sealing cup structure with a variable cross section according to claim 5, wherein the bottom of the pressing plate is further provided with a protruding strip, the protruding strip is arranged around the boss, and the protruding strip abuts against the mounting surface.
7. The piston structure with the variable cross-section sealing leather cup structure as claimed in claim 2, wherein an air inlet valve plate is arranged at the top of the pressing plate, two air inlet holes are formed in the pressing plate and the piston surface, and two ends of the air inlet valve plate are respectively attached to the upper ends of the two air inlet holes.
8. The piston structure with the variable cross-section sealing cup structure as claimed in claim 7, further comprising a valve screw, wherein the valve screw is arranged in the middle of the intake valve plate and is in threaded connection with the intake valve plate and the piston surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921463838.9U CN211474286U (en) | 2019-09-04 | 2019-09-04 | Piston structure with variable cross-section sealing leather cup structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921463838.9U CN211474286U (en) | 2019-09-04 | 2019-09-04 | Piston structure with variable cross-section sealing leather cup structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211474286U true CN211474286U (en) | 2020-09-11 |
Family
ID=72372888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921463838.9U Expired - Fee Related CN211474286U (en) | 2019-09-04 | 2019-09-04 | Piston structure with variable cross-section sealing leather cup structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211474286U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114517776A (en) * | 2022-01-29 | 2022-05-20 | 贵州华烽汽车零部件有限公司 | Portable mini-air compression pump for medical oxygen generator |
-
2019
- 2019-09-04 CN CN201921463838.9U patent/CN211474286U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114517776A (en) * | 2022-01-29 | 2022-05-20 | 贵州华烽汽车零部件有限公司 | Portable mini-air compression pump for medical oxygen generator |
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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: 20200911 |