CN203157978U - Piston assembly with guide ring - Google Patents
Piston assembly with guide ring Download PDFInfo
- Publication number
- CN203157978U CN203157978U CN 201320182037 CN201320182037U CN203157978U CN 203157978 U CN203157978 U CN 203157978U CN 201320182037 CN201320182037 CN 201320182037 CN 201320182037 U CN201320182037 U CN 201320182037U CN 203157978 U CN203157978 U CN 203157978U
- Authority
- CN
- China
- Prior art keywords
- guide ring
- piston assembly
- piston
- seal
- ring
- 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
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- Sealing Devices (AREA)
- Braking Arrangements (AREA)
Abstract
The utility model provides a piston assembly with a guide ring. The piston assembly comprises a piston disposed in a cylinder block. The piton is provided with two circular grooves. The guide ring is disposed in the first circular groove. A seal ring is disposed in the second circular groove. The seal ring is abutted to the guide ring. On the basis of the existing brake and clutch master pump structure, a main leather cup part of the piston assembly is optimized, and a piston main leather cup bearing platform is movably fitted, namely the guide ring is added; the leather cup outer lip seal of the original structure is modified into an outer seal-ring dynamic seal; a compensation hole of the original structure is omitted, and a valve port seal is disposed inside the structure. The piston assembly with the guide ring has the advantages that the outside of the piston assembly wears rarely, inside idle stroke performance is easy to control, and wear resistance of products is improved greatly.
Description
Technical field
The utility model belongs to the auto parts and components field, is specifically related to the piston assembly of a kind of tape guide ring type.
Background technology
Master brake cylinder is the main brake component in the hydraulic braking system for automobile, by the braking liquid of its output through oil outlet by the brake wheel cylinder on the brake piping input brake disc, thereby realize the purpose of braking automobile braking.Master brake cylinder comprises that mainly the open end of cylinder body, cylinder body is equipped with the oil sealing end cap, in the cavity that oil sealing end cap and cylinder body form piston is installed, between piston, cylinder body and the oil sealing end cap positioning spacer is installed, described positioning spacer is separated into brake chamber and liquid storage cylinder with cavity, piston is provided with the compensation orifice that connects brake chamber and liquid storage cylinder, and the outside face of piston is provided with leather cup.But common master brake cylinder is prone to leather cup wearing and tearing and piston eccentric wear phenomenon at present.
The utility model content
The utility model provides a kind of tape guide ring type piston assembly of wearing and tearing little at above-mentioned the deficiencies in the prior art.
The utility model is achieved by the following technical solution:
The piston assembly of a kind of tape guide ring type comprises that one is arranged on the piston in the cylinder body, and described piston is provided with two annular grooves, is provided with a guide ring in first annular groove, is provided with a seal ring in second annular groove, described seal ring and guide ring butt.
Further setting of the present utility model is that described seal ring is an O RunddichtringO.
Further setting of the present utility model is that described piston is provided with the valve port that connects brake chamber and liquid storage cylinder.
Further setting of the present utility model is that described valve port is a sealing valve port.
Tape guide ring type described in the utility model piston assembly on the basis of existing braking and the total pump configuration of clutch, partly is optimized the piston primary cup, changes piston primary cup supporting station into movable formula, namely installs guide ring additional; Change the outer lip seal of the leather cup of original structure the dynamic seal (packing) of into outside seal circle formula simultaneously; Removed the compensation orifice on the original design, the inner valve port formula that adopts seals.Advantage is that the outside is not easy to wear, and inner idle travel performance is easy to control, has improved the wear resisting property of product greatly.
Description of drawings
Fig. 1 is the constructional drawing of tape guide ring type described in the utility model piston assembly.
The specific embodiment
The utility model is described in more detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the utility model provides the piston assembly of a kind of tape guide ring type, comprise that one is arranged on the piston 2 in the cylinder body 1, described piston 2 is provided with two annular grooves, be provided with a guide ring 3 in first annular groove, be provided with a seal ring 4 in second annular groove, described seal ring 4 and guide ring 3 butts.Described seal ring 4 is an O RunddichtringO.
Simultaneously, the utility model has been removed the compensation orifice on the original design, at piston 2 sealing valve port 5 is set, and has realized the sealing of valve port formula, has improved the wear resisting property of product.
The above is preferred embodiment of the present utility model, and all equivalent variations of doing according to the utility model claim all should belong to protection domain of the present utility model.
Claims (4)
1. tape guide ring type piston assembly comprises that one is arranged on the piston in the cylinder body, it is characterized in that, described piston is provided with two annular grooves, be provided with a guide ring in first annular groove, be provided with a seal ring in second annular groove, described seal ring and guide ring butt.
2. tape guide ring type according to claim 1 piston assembly is characterized in that, described seal ring is an O RunddichtringO.
3. tape guide ring type according to claim 1 piston assembly is characterized in that, described piston is provided with the valve port that connects brake chamber and liquid storage cylinder.
4. tape guide ring type according to claim 3 piston assembly is characterized in that, described valve port is a sealing valve port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320182037 CN203157978U (en) | 2013-04-11 | 2013-04-11 | Piston assembly with guide ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320182037 CN203157978U (en) | 2013-04-11 | 2013-04-11 | Piston assembly with guide ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203157978U true CN203157978U (en) | 2013-08-28 |
Family
ID=49019187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320182037 Expired - Lifetime CN203157978U (en) | 2013-04-11 | 2013-04-11 | Piston assembly with guide ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203157978U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107076221A (en) * | 2014-09-25 | 2017-08-18 | Avl商业动力传动系统及拖拉机工程有限公司 | Extrusion cylinder for actuating friction element |
-
2013
- 2013-04-11 CN CN 201320182037 patent/CN203157978U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107076221A (en) * | 2014-09-25 | 2017-08-18 | Avl商业动力传动系统及拖拉机工程有限公司 | Extrusion cylinder for actuating friction element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |
|
| CX01 | Expiry of patent term |