CN203335830U - Piston - Google Patents
Piston Download PDFInfo
- Publication number
- CN203335830U CN203335830U CN2013202959150U CN201320295915U CN203335830U CN 203335830 U CN203335830 U CN 203335830U CN 2013202959150 U CN2013202959150 U CN 2013202959150U CN 201320295915 U CN201320295915 U CN 201320295915U CN 203335830 U CN203335830 U CN 203335830U
- Authority
- CN
- China
- Prior art keywords
- piston
- sealing
- skeleton
- sealing elements
- steel plate
- 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 - Lifetime
Links
Images
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The invention discloses a piston which comprises sealing elements and a piston framework. The sealing elements are integrally mounted on two side surfaces of the piston framework in a pressed manner, lips in seal fit with cylinders are arranged at the edges of the sealing elements, outer layers of the sealing elements are rubber layers, support steel plates are wrapped in the rubber layers, and support rings are inlaid In the periphery of the piston framework. The piston assembly is compact in structure; the lips of the sealing elements are designed to form two linear seals, so that gas carry-over and gas leakage faults of the cylinders are effectively reduced; the impact between the rubber layers of the sealing elements and metal of the cylinders generate less noise; oil storage structures are arranged on the sealing rubber parts of the piston so that the cylinders can be conveniently lubricated; and the movement balance and abrasion resistance of the piston are improved through the design of the support rings.
Description
[technical field]
The utility model relates to the cylinder technical field, particularly a kind of piston structure.
[background technique]
Cylinder assembly is a kind of executive component that utilizes air pressure to promote piston movement, generally comprises the parts such as cylinder block, piston, O type sealed member, seal shaft, and wherein piston+O shape coil structures is realized sealing, as shown in Figure 1.The composite structure of piston and O shape circle in common cylinder, generally be arranged on piston body 2 and formed by O shape circle 1 and O shape circle 3.Wherein O shape circle 1 is embedded in the outer grooved ring of piston body 2, form sealing configuration with the cylinder block inwall, rely on the circle extrusion-deformation of O shape and cylinder wall to form the single line sealing structure, this composite structure generally is applicable to the motive sealing operating mode, and cylinder wall roughness, turbidity test are had relatively high expectations.O shape circle 3 is arranged on the interior grooved ring of piston 2, and O shape circle 3 and dual face formation static seal structure, be convenient to piston assembly and piston shaft removes and installs.
O shape circle+piston structure has the characteristics such as simple in structure, that cost is low at present, has wide range of applications.But also have some shortcomings: 1, O shape circle+piston in combination is the single line sealing structure that is squeezed and is formed by O shape circle, and the wearing and tearing of O shape circle easily cause gas blowby, principal fault; 2,, in piston movement, metallic piston contacts and produces impact noise with the cylinder block collision, affects product performance.Be accompanied by the raising that people require product performance, design a kind of novel piston assembly and address the above problem significant.
[model utility content]
The purpose of this utility model is to provide a kind of piston, to solve the problems of the technologies described above.
To achieve these goals, the utility model adopts following technological scheme:
A kind of piston, comprise Sealing and piston skeleton; The Sealing integral press mounting is on the side of piston skeleton; The external diameter of Sealing is greater than the external diameter of piston skeleton, and the cylindrical of Sealing is provided with the lip coordinated with cylinder seal.
The utility model further improves and is: the lip of Sealing is tapered, lip from the piston skeleton at a distance outside diameter be greater than from piston skeleton outside diameter more nearby; Lip from the piston skeleton at a distance cylindrical than lip from the piston skeleton more nearby cylindrical away from the side of piston skeleton.
The utility model further improves and is: be provided with support ring on the circumference of piston skeleton, the external diameter of support ring is less than or equal to seal outer diameter.
The utility model further improves and is: on two sides of piston skeleton, all be pressed with Sealing.
The utility model further improves and is: Sealing comprises supporting steel plate, and supporting steel plate is wrapped with rubber layer, and the rubber layer outside diameter is greater than the outside diameter of supporting steel plate.
The utility model further improves and is: the rubber layer side of Sealing is not less than the end face of the central boss of piston skeleton.
The utility model further improves and is: Sealing is supporting steel plate and the integral structure formed together with rubber layer is.
The utility model further improves and is: the supporting steel plate inner ring is provided with the conical surface, from piston skeleton side, diameter at a distance is less than from piston skeleton side diameter more nearby the conical surface, be provided with circular groove on the central boss of piston skeleton, the inward flange of the conical surface is stuck in circular groove by press-fiting.
The utility model further improves and is: O shape circle is installed on the interior grooved ring of piston skeleton.
The utility model further improves and is: the cylindrical place of Sealing is provided with oil storage tank.
The utility model is a kind of piston skeleton+sealed member (rubber is wrapped in supporting steel plate) structure, two sealed member bilateral symmetry are fitted on the piston skeleton, sealed member and piston integral structure have been realized, cancelled the grooved cooperating structure of O shape circle with piston, adopt the lip design of sealed member to realize sealing, internal piston adopts O shape circle static seal structure, is convenient to dismounting after sale, and the piston assembly reliability is higher.
With respect to prior art, the utlity model has following advantage: 1. piston assembly compact structure, two linear sealings of sealed member lip design forming, effectively reduce cylinder blow by, principal fault; 2. sealed member and cylinder are that rubber parts and metal clash into, and can significantly reduce noise; 3. be designed with oil-bearing structure on the caulking gum of piston, be convenient to cylinder lubrication; 4. being designed with of support ring is beneficial to piston movement balance, wear-resisting.
[accompanying drawing explanation]
Fig. 1 is the sectional view of existing piston;
The sectional view that Fig. 2 is the utility model piston;
The partial enlarged drawing that Fig. 3 is Fig. 2.
[embodiment]
Refer to shown in Fig. 2 and Fig. 3, a kind of piston of the utility model, comprise support ring 10, two Sealings 20, piston skeleton 30 and O shape circles 40.Wherein symmetrical two Sealing 20 integral press mountings are on two sides of piston skeleton 30, and support ring 10 is enclosed within on the outer radial periphery of piston skeleton 30, and O shape circle 40 is arranged on the interior grooved ring of piston skeleton 30.Sealing 20 comprises supporting steel plate 21, and supporting steel plate 21 is wrapped with rubber layer 22, rubber layer 22 and supporting steel plate 21 be by sulfuration process, be processed into as a whole; The cylindrical of rubber layer 22 is provided with 23, two Sealings of lip 20 that coordinate with cylinder seal and forms symmetrical lip seal cylinder, has effectively increased rubber and cylinder seal quantity, has improved sealing reliability.The lip 23 of Sealing 20 is tapered, lip from piston skeleton 30 at a distance outside diameter be greater than from piston skeleton 30 outside diameter more nearby.Supporting steel plate 21 inner rings are provided with the conical surface 210, from piston skeleton 30 sides, diameter at a distance is less than from piston skeleton 30 sides diameter more nearby the conical surface, be provided with circular groove 310 on the central boss 31 of piston skeleton 30, the inward flange of the conical surface 210 is stuck in circular groove 310 by press-fiting.
The utility model piston assembly is consistent with common cylinder piston working principle, but because adopting the lip of oil sealing, Sealing 20 designs, lip and cylinder wall form the two-wire sealing, in the to-and-fro motion of piston, the left and right lip supports respectively large blanket gas casing wall under air pressure promotes, significant sealing affection improves, and has reduced the gas blowby fault of seal with O ring; Rubber layer 22 sides of Sealing 20 exceed the end face of the central boss 31 of piston skeleton 30, and rubber and metal cylinder bump softer, significantly reduce impact noise; The seal lip bottom design has oil storage tank 200, can better lubricating component in piston movement; Piston skeleton 30 outer ends increase support rings 10, make in piston movement more steadily, and wear resistance is better; Increase the design of O shape circle 40 in piston skeleton 30, be convenient to the piston assembly dismounting.
Claims (10)
1. a piston, is characterized in that, comprises Sealing (20) and piston skeleton (30); Sealing (20) integral press mounting is on the side of piston skeleton (30); The external diameter of Sealing (20) is greater than the external diameter of piston skeleton (30), and the cylindrical of Sealing (20) is provided with the lip (23) coordinated with cylinder seal.
2. piston according to claim 1, is characterized in that, the lip (23) of Sealing (20) is tapered.
3. piston according to claim 1, is characterized in that, is provided with support ring (10) on the circumference of piston skeleton (30), and the external diameter of support ring (10) is less than or equal to Sealing (20) external diameter.
4. piston according to claim 1, is characterized in that, on two sides of piston skeleton (30), all is pressed with Sealing (20).
5. according to the described piston of any one in claim 1-4, it is characterized in that, Sealing (20) comprises supporting steel plate (21), and supporting steel plate (21) is wrapped with rubber layer (22), and rubber layer (22) outside diameter is greater than the outside diameter of supporting steel plate (22).
6. piston according to claim 5, is characterized in that, rubber layer (22) side of Sealing (20) is not less than the end face of the central boss (31) of piston skeleton (30).
7. piston according to claim 6, is characterized in that, Sealing (20) is supporting steel plate (21) and the integral structure formed together with rubber layer (22) is.
8. piston according to claim 6, it is characterized in that, supporting steel plate (21) inner ring is provided with the conical surface (210), from piston skeleton (30) side, diameter at a distance is less than from piston skeleton (30) side diameter more nearby the conical surface, be provided with circular groove (310) on the central boss (31) of piston skeleton (30), the inward flange of the conical surface (210) is stuck in circular groove (310).
9. piston according to claim 1, is characterized in that, O shape circle (40) is installed on the interior grooved ring of piston skeleton (30).
10. according to the described piston of any one in claim 1-4, it is characterized in that, the cylindrical place of Sealing (20) is provided with oil storage tank (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202959150U CN203335830U (en) | 2013-05-27 | 2013-05-27 | Piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202959150U CN203335830U (en) | 2013-05-27 | 2013-05-27 | Piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203335830U true CN203335830U (en) | 2013-12-11 |
Family
ID=49704506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202959150U Expired - Lifetime CN203335830U (en) | 2013-05-27 | 2013-05-27 | Piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203335830U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244668A (en) * | 2013-05-27 | 2013-08-14 | 陕西法士特齿轮有限责任公司 | Piston |
-
2013
- 2013-05-27 CN CN2013202959150U patent/CN203335830U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244668A (en) * | 2013-05-27 | 2013-08-14 | 陕西法士特齿轮有限责任公司 | Piston |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102954194B (en) | Railway vehicle traveling gearbox sealing structure | |
| CN104165227B (en) | A kind of detachable rotating shaft lip-shaped sealing device | |
| CN204187011U (en) | Use in washing machine seal arrangement | |
| CN202215736U (en) | Sealing structure for traveling gearbox of railway vehicle | |
| CN203335830U (en) | Piston | |
| CN203730718U (en) | Combined seal bearing end cover for speed reducer | |
| CN103244668A (en) | Piston | |
| CN106515304A (en) | Hub assembly seal | |
| CN105526365A (en) | Rotation sealing mechanism | |
| CN201547217U (en) | Shock absorbing sealing type gearbox | |
| CN203488271U (en) | Integrated natural gas engine cylinder head cover assembly | |
| CN103090008A (en) | Rotary seal lip type seal ring assembly for rotating shaft | |
| CN103388580A (en) | Split type mechanical seal and double-screw pump with same | |
| CN203395151U (en) | Inner oil-resistant plate-type oil seal with dustproof cover and lip | |
| CN204025507U (en) | Hydro-pneumatic spring sealing configuration | |
| CN206436734U (en) | A kind of hub assembly sealing | |
| CN202789677U (en) | Double-seal mechanical sealing assembly | |
| CN102278474A (en) | Contact type dynamic sealing method and dynamic sealing device of dishing sealing ring | |
| CN202203406U (en) | Oil seal for wheel edge of engineering machinery | |
| CN202228681U (en) | Combined oil seal | |
| CN205155015U (en) | Rolling stock hydraulic shock absorber seal structure | |
| CN203656193U (en) | Bearing isolator | |
| CN202612644U (en) | Oil seal ring of high-pressure plunger pump | |
| CN205136383U (en) | Straightening machine is with sealed biserial cylindrical roller bearing | |
| CN204828314U (en) | Three seal structure on spindle bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131211 |