CN1448298A - Sealed unloading device in brake master cylinder assembly for vehicle - Google Patents
Sealed unloading device in brake master cylinder assembly for vehicle Download PDFInfo
- Publication number
- CN1448298A CN1448298A CN 03116744 CN03116744A CN1448298A CN 1448298 A CN1448298 A CN 1448298A CN 03116744 CN03116744 CN 03116744 CN 03116744 A CN03116744 A CN 03116744A CN 1448298 A CN1448298 A CN 1448298A
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- China
- Prior art keywords
- leather cup
- piston
- master cylinder
- cup
- cylinder assembly
- 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.)
- Pending
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- 239000010985 leather Substances 0.000 claims abstract description 38
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 230000001154 acute effect Effects 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000005987 sulfurization reaction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
Images
Landscapes
- Transmission Of Braking Force In Braking Systems (AREA)
- Braking Arrangements (AREA)
Abstract
The sealed unloading mechanism in automatic brake cylinder assembly includes stepped shaft piston and limiting pin inside the cylinder, main leather cup assembly and unloading clamp ring. The main leather cup assembly includes leather cup with inner hole or inner ring, sealing ring and cup protecting pad, and is installed on the stepped piston shaft with some interval in between. The unloading clamp ring is embedded in the ring slot on piston, has end hook inserted inside the hole of flange in piston and contacts with the cup protecting pad. The mechanism has simple structure, long service life and high in brake effect, may be used in the hydraulic brake cylinder assembly of various automobiles, and is especially suitable for ABS.
Description
Technical field
The present invention relates to the sealing relief arrangement in the car brakeing master cylinder assembly.
Background technology
Sealing relief arrangement in the existing automobile braking master cylinder assembly comprises piston, the piston motion locating dowel pin that is located in the brake cylinder, the leather cup of device on piston, because brake cylinder casing is provided with compensation orifice, thereby influenced service life of leather cup, the abrasive dust that produces because of the leather cup heel and toe wear can make compensation orifice stop up and generation braking failure phenomenon again.Though designed multiple improvement structure for overcoming this shortcoming, but part is many, complex structure, adopt central valve formula brake master cylinder assembly as " ABS " anti-lock brake system, the central valve of its each epitrochoidal chamber need dispose circlip for bore, pull back spring, valve seals, valve rod etc., have complex structure equally, part is many, defect of high cost.
Summary of the invention
The purpose of this invention is to provide the sealing relief arrangement in a kind of automobile braking master cylinder of simple in structure, long service life.
Sealing relief arrangement in the automobile braking master cylinder assembly of the present invention comprises the stepped shaft shape piston that is located in the brake cylinder, locating dowel pin, it is characterized in that also comprising primary cup assembly and off-load snap ring, the primary cup assembly has the leather cup of endoporus or inner ring, outside face in the leather cup bottom is provided with the seal ring and the leather cup protection pad of projection, the primary cup assembly is nested with on the piston stepped shaft, gapped or at the endoporus or the inner ring of leather cup axial oil groove is set between the two, off-load snap ring card is embraced in the piston circular groove, contact with the leather cup protection pad of primary cup assembly bottom in the aperture of its end crotch insertion piston flange dish.
Sealing relief arrangement in the automobile braking master cylinder assembly of the present invention, constitute flow channel by the endoporus of leather cup in the primary cup assembly or the gap of inner ring and piston stepped shaft or the aperture of oil groove and piston flange dish, removed the compensation orifice on the cylinder body, not only part is few, simple in structure, be beneficial to and improve service life, and the off-load snap ring is (piston return) when master cylinder is worked, can be spacing to the primary cup assembly, make the braking liquid unimpeded fluid infusion velocity that refluxes fast, good braking effect, this device can be used in the hydraulic brake master assembly of various brake system of car, and especially " ABS " anti-lock brake system adopts this device more practical.
Description of drawings
Fig. 1 is a kind of concrete structure scheme drawing of the sealing relief arrangement in the automobile braking master cylinder assembly;
Fig. 2 is a kind of concrete structure scheme drawing of primary cup assembly;
Fig. 3 is the left view of Fig. 2 primary cup assembly;
Fig. 4 is the scheme drawing that Fig. 2 primary cup assembly endoporus has oil groove;
Fig. 5 is the another kind of concrete structure scheme drawing of primary cup assembly;
Fig. 6 is the left view of Fig. 5 primary cup assembly;
Fig. 7 is the constructional drawing that the leather cup inner ring has oil groove;
Fig. 8 is the left view of Fig. 7 primary cup assembly;
Fig. 9～Figure 11 is respectively Fig. 2, Fig. 4, Fig. 5, Fig. 7 I place partial enlarged drawing;
Figure 12 is a kind of off-load snap ring scheme drawing;
Figure 13 is the lateral plan of Figure 12;
Figure 14 is another kind of off-load snap ring scheme drawing;
Figure 15 is the lateral plan of Figure 14.
The specific embodiment
With reference to Fig. 1, sealing relief arrangement in the automobile braking master cylinder assembly of the present invention comprises stepped shaft shape piston 2, locating dowel pin 10, primary cup assembly 3 and the off-load snap ring 9 that is located in the brake cylinder 1, primary cup assembly 3 is nested with on the piston stepped shaft, the inwall moving contact of the cylindrical of leather cup and cylinder body 1 contacts with the leather cup protection pad of primary cup assembly bottom in the aperture 6 that off-load snap ring 9 cards are embraced in piston circular groove 5, its end crotch inserts the piston flange dish.
Fig. 2 is a kind of concrete structure of primary cup assembly, its leather cup 11 has endoporus 14, outside face in the leather cup bottom has the seal ring 3.1 of the projection that fuses with it, 1～2 seal ring generally can be set, the drift angle of seal ring projection (is seen Fig. 9～Figure 11) can select obtuse angle, garden arc or acute angle for use, the leak tightness of the piston flange dish end face in assurance and the master brake cylinder, be provided with leather cup protection pad 4 in the outer of seal ring, leather cup protection pad 4 and leather cup 11 can be for split type, be generally and be convenient to install, leather cup protection pad 4 and leather cup 11 sulfurations can be one.In the diagram concrete structure, inside face in the leather cup bottom is evenly equipped with several projectioies 13 around endoporus 14, be used to guarantee between the convex shoulder of leather cup and piston stepped shaft gapped, guarantee that the liquid road is unimpeded, this projection can be hemisphere or the cylinder of projection and the gengon of projection of projection.For accelerating the braking liquid return velocity, can at inner hole wall axial oil groove 12 be set again as shown in Figure 4.This axial oil groove is the groove for not connecting vertically as shown, perhaps also can be the groove that connects vertically.
Fig. 5 is the another kind of concrete structure of primary cup assembly, its leather cup 11 has inner ring 15, outside face in the leather cup bottom has raised seals ring 3.1 and the leather cup protection pad 4 same with Fig. 2, be evenly equipped with several projectioies 13 in the end of inner ring 15, this projection can be hemisphere or the cylinder of projection and the gengon of projection of projection equally.Perhaps also axial oil groove l2 can be set at the inner ring of leather cup.
The off-load snap ring is at least semicircular arc, has the crotch 9.1 rectangular with arcwall face at an end (as Figure 12) or two ends (as Figure 14) of snap ring, is used for inserting the aperture 6 of piston flange dish.
The aperture of the gap of the endoporus of leather cup or inner ring and piston stepped shaft or oil groove and piston flange dish constitutes fluid path in the above-mentioned primary cup assembly.
When brake system is in initial position, locating dowel pin 10 in the brake master cylinder assembly opens the primary cup assembly by off-load snap ring 9 tops that card is embraced in the piston circular groove, an end inserts in the flange aperture 6, at this moment the oil of lubricating cup enters from the liquid-through hole 7 of brake cylinder, enters epitrochoidal chamber 8 through fluid path.
Glancing impact, piston 2 drives the primary cup assembly, the off-load snap ring moves left, and the primary cup assembly is moved to the right by the effect of hydraulic pressure in the epitrochoidal chamber, and the seal ring 3.1 of projection is close to flange and closing oil path.Work as brake off, piston 2 is got back to initial position, and at this moment, off-load snap ring 9 restriction primary cup assemblies move right and oil circuit is connected, and the oil in the epitrochoidal chamber obtains rapidly replenishing or being back in the lubricating cup by the braking liquid path, restPoses again.
Claims (6)
1. the sealing relief arrangement in the automobile braking master cylinder assembly, comprise the stepped shaft shape piston (2) that is located in the brake cylinder (1), locating dowel pin (10), it is characterized in that also comprising primary cup assembly (3) and off-load snap ring (9), primary cup assembly (3) has the leather cup (11) of endoporus or inner ring, outside face in the leather cup bottom is provided with the seal ring (3.1) and the leather cup protection pad (4) of projection, primary cup assembly (3) is nested with on the piston stepped shaft, gapped or at the endoporus or the inner ring of leather cup axial oil groove (12) is set between the two, off-load snap ring (9) card is embraced in the piston circular groove, contact with the leather cup protection pad (4) of primary cup assembly bottom in the aperture (6) of its end crotch insertion piston flange dish.
2. the sealing relief arrangement in the automobile braking master cylinder assembly according to claim 1 is characterized in that the seal ring (3.1) of leather cup bottom protrusion and leather cup protection pad (4) sulfuration are one.
3. the sealing relief arrangement in the automobile braking master cylinder assembly according to claim 1 is characterized in that the drift angle of seal ring (3.1) projection is obtuse angle or garden arc or acute angle.
4. the sealing relief arrangement in the automobile braking master cylinder assembly according to claim 1 is characterized in that being evenly equipped with several projectioies that is hemisphere or cylinder or gengon (13) at the inside face of leather cup bottom around endoporus (14).
5. the sealing relief arrangement in the automobile braking master cylinder assembly according to claim 1 is characterized in that being evenly equipped with in the end of leather cup inner ring several projectioies that is hemisphere or cylinder or gengon (13).
6. the sealing relief arrangement in the automobile braking master cylinder assembly according to claim 1 is characterized in that said off-load snap ring (9) is at least semicircular arc, and the crotch (9.1) that is located at the snap ring one or both ends is rectangular with arcwall face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03116744 CN1448298A (en) | 2003-04-28 | 2003-04-28 | Sealed unloading device in brake master cylinder assembly for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03116744 CN1448298A (en) | 2003-04-28 | 2003-04-28 | Sealed unloading device in brake master cylinder assembly for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1448298A true CN1448298A (en) | 2003-10-15 |
Family
ID=28684243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03116744 Pending CN1448298A (en) | 2003-04-28 | 2003-04-28 | Sealed unloading device in brake master cylinder assembly for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1448298A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494061A (en) * | 2011-12-21 | 2012-06-13 | 广东中博汽车零部件有限公司 | Brake master cylinder assembly |
| CN102518707A (en) * | 2011-12-21 | 2012-06-27 | 芜湖博格汽车零部件有限公司 | Piston structure of slave cylinder of clutch |
| CN102869553A (en) * | 2010-05-04 | 2013-01-09 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Master cylinder for a hydraulic motor vehicle brake system |
| CN109612557A (en) * | 2018-11-08 | 2019-04-12 | 江苏大学 | A device for detecting the center of mass of a propeller |
| CN110114252A (en) * | 2016-12-29 | 2019-08-09 | 罗伯特·博世有限公司 | The hydraulic block of the hydraulic assembly of brake regulation system for hydraulic vehicle brake apparatus |
| CN115009241A (en) * | 2022-06-30 | 2022-09-06 | 中汽创智科技有限公司 | A pressure control unit and braking system |
-
2003
- 2003-04-28 CN CN 03116744 patent/CN1448298A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102869553A (en) * | 2010-05-04 | 2013-01-09 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Master cylinder for a hydraulic motor vehicle brake system |
| CN102869553B (en) * | 2010-05-04 | 2015-11-25 | 大陆-特韦斯贸易合伙股份公司及两合公司 | For the master cylinder of automotive hydraulic brake system |
| CN102494061A (en) * | 2011-12-21 | 2012-06-13 | 广东中博汽车零部件有限公司 | Brake master cylinder assembly |
| CN102518707A (en) * | 2011-12-21 | 2012-06-27 | 芜湖博格汽车零部件有限公司 | Piston structure of slave cylinder of clutch |
| CN102494061B (en) * | 2011-12-21 | 2014-11-26 | 广东中博汽车零部件有限公司 | Brake master cylinder assembly |
| CN110114252A (en) * | 2016-12-29 | 2019-08-09 | 罗伯特·博世有限公司 | The hydraulic block of the hydraulic assembly of brake regulation system for hydraulic vehicle brake apparatus |
| CN109612557A (en) * | 2018-11-08 | 2019-04-12 | 江苏大学 | A device for detecting the center of mass of a propeller |
| CN115009241A (en) * | 2022-06-30 | 2022-09-06 | 中汽创智科技有限公司 | A pressure control unit and braking system |
| CN115009241B (en) * | 2022-06-30 | 2024-03-01 | 中汽创智科技有限公司 | Pressure control unit and braking system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |