CN2149322Y - Master cylinder of slid valve type with two tube - Google Patents
Master cylinder of slid valve type with two tube Download PDFInfo
- Publication number
- CN2149322Y CN2149322Y CN 93204855 CN93204855U CN2149322Y CN 2149322 Y CN2149322 Y CN 2149322Y CN 93204855 CN93204855 CN 93204855 CN 93204855 U CN93204855 U CN 93204855U CN 2149322 Y CN2149322 Y CN 2149322Y
- Authority
- CN
- China
- Prior art keywords
- piston
- master cylinder
- valve type
- cylinder
- valve seat
- 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
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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model relates to a master cylinder with two tubes in a slid valve type, composed of a cylinder, a piston, a rubber cup, a spring and a sealing ring. The utility model is characterized in a slide valve seat installed in the inner cavity of the cylinder 1 and a valve rod piston 9 which is partially inserted in the inner cavity and controlled by a piston 4. Because of the reasonable structure, when working, the rubber cup does not have to pass through any barriers which can break or scratch the rubber cup. Thus, the service life of the rubber cup and the reliability of the brake system are raised.
Description
The utility model relates to a kind of automobile oil brake, particularly relates to a kind of side valve type dual line braking master cylinder.
Existing dual line braking master cylinder is shown in accompanying drawing (1): compensation orifice is in the lip front end of two-piston leather cup ［ according to the industry standard ZB/T 724008-90 of People's Republic of China (PRC) automobile hydraulic brake master engineering factor when air pump inoperative, the distance of compensation orifice and leather cup lip, the stroke before promptly compensation orifice is closed is not more than 3mm ］.Its primary cup must be crossed compensation orifice when therefore the master cylinder of existing structure transferred mode of operation to by off working state.Can find out obviously that from the structure of master cylinder cylinder body compensation orifice and passing through mutually of oil cylinder macropore must form the closed intersection in the space as the edge of a knife especially, this closed intersection in space as the edge of a knife especially just, primary cup has been constituted serious isolating and scratching, therefore, it must reduce the service life of leather cup and the reliability of whole brake system of car.
Since the pump of this structure comes out, countless engineering staff have paid hard effort for solving this difficult problem, certain achievement and progress have also been obtained, the core content of this achievement and progress is to carry out chamfer angle technique at compensation orifice with the place of passing through mutually of oil cylinder macropore to handle, and sees patent application 91209427.3.But this mode still can not fundamentally solve the rapid wear problem of leather cup, and complex process.
The purpose of this utility model is to provide a kind of and avoids leather cup to isolate or scratch, thereby improves the side valve type dual line braking master cylinder of its service life and braking reliability.
The purpose of this utility model is to realize like this, that is: this side valve type dual line braking master cylinder, comprise the pump housing, piston, leather cup, spring, seal ring, its key is: be contained in the slide valve seat of pump housing inner chamber, a part is inserted its inner chamber and is subjected to the valve stem piston of piston action.The vertical section of described slide valve seat is " worker " font, and waist is provided with two compensation orifices; The bar portion of valve stem piston is provided with the twice groove, and is porose and connect with the axle center hole on both sides in the groove.
The utility model compared with prior art, because during piston motion, it between the compensation orifice on piston rod and the slide valve seat clearance seal, thereby do not exist the leather cup on the piston to cause the phenomenon of isolating or scratching through compensation orifice, it is reliable to make it sealing, improve the service life of leather cup, and then guaranteed the reliability of brake system work.
Fig. 1 is for now using the structural representation of common double pipeline master brake cylinder;
Fig. 2 is an overall structure scheme drawing of the present utility model.
Among Fig. 2,1 is the pump housing, and 2 is seal ring, and 3 is the first feed flow chamber, and 4 is piston, 5,10 is that leather cup, 6,11 is outage, and 7 is valve seat, and 8 is the second feed flow chamber, and 9 is valve stem piston, and 12,15 is the feed flow hole, 13 is first brake repair room, and 14,16 is compensation orifice, and 17 is second brake repair room, and 18 is spring.
Below with reference to Fig. 2 concrete structure of the present utility model is further described.
Referring to Fig. 2, the utility model side valve type dual line braking master cylinder by a pump housing 1, is contained in the spring 18 of its inner chamber successively, valve stem piston 9, and slide valve seat 7, piston 4 is formed.Seal ring 2 and leather cup 5 are housed on piston 4, leather cup 10 are housed at valve stem piston 9 heads.The pump housing 1 in the present embodiment is provided with feed flow hole 12,15 and outage 6,11; Be provided with compensation orifice 14,16 on slide valve seat 7, the vertical section of slide valve seat is " worker " font.
Principle of work of the present utility model such as following:
Piston 4 will promote valve stem piston 9 and travel forward together under the effect of total pump push rod, because the motion of valve stem piston will inevitably SELF CL compensation orifice 14 and 16, thereby the hydraulic oil of first brake repair room 13 and second brake repair room 17 pressed to through outage 6 and 11 respectively take turns wheel cylinder, play the effect of braking.
The position that this shows content key of the present invention to be to adopt a guiding valve and change the prior art compensation orifice, but still the function that can play original compensation orifice is promptly: under the braking disarm state, return fluid reservoir to brake chamber compensation braking liquid or unnecessary braking liquid.
Claims (3)
1, a kind of side valve type dual line braking master cylinder comprises the pump housing, piston, leather cup, spring, seal ring, it is characterized in that: be contained in the slide valve seat (7) of the pump housing (1) inner chamber, a part is inserted its inner chamber and is subjected to the valve stem piston (9) of piston (4) effect.
2, according to the described dual line braking master cylinder of claim 1, it is characterized in that: the vertical section of slide valve seat (7) is " worker " font, and waist is provided with two compensation orifices (14), (16).
3, according to the described dual line braking master cylinder of claim 1, it is characterized in that: the bar portion of valve stem piston (9) is provided with the twice groove, and is porose and connect with the axle center hole on both sides in the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93204855 CN2149322Y (en) | 1993-03-08 | 1993-03-08 | Master cylinder of slid valve type with two tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93204855 CN2149322Y (en) | 1993-03-08 | 1993-03-08 | Master cylinder of slid valve type with two tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2149322Y true CN2149322Y (en) | 1993-12-15 |
Family
ID=33788286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93204855 Expired - Fee Related CN2149322Y (en) | 1993-03-08 | 1993-03-08 | Master cylinder of slid valve type with two tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2149322Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103273916A (en) * | 2013-05-06 | 2013-09-04 | 温州力邦企业有限公司 | Vehicle main pump assembly |
| CN104203669A (en) * | 2012-03-30 | 2014-12-10 | 本田技研工业株式会社 | Braking device |
-
1993
- 1993-03-08 CN CN 93204855 patent/CN2149322Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104203669A (en) * | 2012-03-30 | 2014-12-10 | 本田技研工业株式会社 | Braking device |
| US9327697B2 (en) | 2012-03-30 | 2016-05-03 | Honda Motor Co., Ltd. | Braking device |
| CN104203669B (en) * | 2012-03-30 | 2017-06-09 | 本田技研工业株式会社 | Brake apparatus |
| CN103273916A (en) * | 2013-05-06 | 2013-09-04 | 温州力邦企业有限公司 | Vehicle main pump assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |