CN203472838U - Hydraulic booster - Google Patents
Hydraulic booster Download PDFInfo
- Publication number
- CN203472838U CN203472838U CN201320567962.6U CN201320567962U CN203472838U CN 203472838 U CN203472838 U CN 203472838U CN 201320567962 U CN201320567962 U CN 201320567962U CN 203472838 U CN203472838 U CN 203472838U
- Authority
- CN
- China
- Prior art keywords
- pass valve
- valve housing
- installation cavity
- power
- return pipe
- Prior art date
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- Expired - Fee Related
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- Braking Systems And Boosters (AREA)
Abstract
The utility model discloses a hydraulic booster, including the hydraulic booster body that is equipped with the helping hand chamber, this internal overflow valve casing installation cavity, oil return pipe passageway and helping hand chamber passageway of still being equipped with of hydraulic booster, oil return pipe passageway one end and overflow valve casing installation cavity intercommunication, helping hand chamber passageway both ends communicate with helping hand chamber and overflow valve casing installation cavity respectively, overflow valve casing installation cavity is equipped with the overflow valve casing, be equipped with overflow valve oil-out and the valve block mouth that is linked together with oil return pipe passageway and helping hand chamber passageway respectively on the overflow valve casing, be equipped with screw, valve seat, sealed steel ball and the spring that both ends link to each other with screw and valve seat respectively in the overflow valve casing, be equipped with the mounting groove on the valve seat, sealed steel ball establishes in the mounting groove. The utility model discloses simple structure has improved holistic sealing performance.
Description
Technical field
The utility model relates to a kind of servo-unit, is specially a kind of hydraulic booster.
Background technology
What 6 tons of above goods carrying vehicles of gross weight mostly adopted is gas braking, gas braking is and poor controllability more rough than liquid braking generally, handling in order to promote, increasing automobile vendor starts to attempt using liquid braking, but traditional vacuum servo has been difficult to meet so large-tonnage vehicle braking performances requirement, the current domestic a kind of braking hydraulic booster assembly having occurred, this assembly adopts and turns to the power-assisted source that shares: kinetic pump.But because the power-assisted oil pressure that different vehicle power steering pump with intergral reservoir provides is different, and turn to the power-assisted oil pressure of requirement conventionally compared with the height of brake request, this just easily makes hydraulic booster assembly power output excessive, corresponding master brake cylinder oil pressure is excessive, cause braking roughly and the stressed load of brake line, sealing member, friction lining and brake wheel excessive, seriously reduce each cell operation life-span.
Summary of the invention
The purpose of this utility model is to provide a kind of hydraulic booster simple in structure in order to overcome above-mentioned deficiency.
The utility model comprises the hydraulic booster body in power-assisted chamber, in described hydraulic booster body, be also provided with by pass valve housing installation cavity, oil return pipe passage and power-assisted chamber passage, described oil return pipe passage one end is communicated with by pass valve housing installation cavity, passage two ends, described power-assisted chamber are communicated with power-assisted chamber and by pass valve housing installation cavity respectively, described by pass valve housing installation cavity is provided with by pass valve housing, described by pass valve housing is provided with by pass valve oil outlet and the valve seat mouth being connected with oil return pipe passage and power-assisted chamber passage respectively, in described by pass valve housing, be provided with screw, valve seat, the spring that sealed steel ball and two ends are connected with valve seat with screw respectively, described valve seat is provided with mounting groove, described sealed steel ball is located in mounting groove.
Between described screw and by pass valve inner walls, be provided with the first seal ring, between described by pass valve housing and by pass valve housing installation cavity, be provided with the second seal ring and the 3rd seal ring, described the second seal ring is between oil return pipe passage and screw, and described the 3rd seal ring is between oil return pipe passage and power-assisted chamber passage.
The utility model is simple in structure, when power-assisted chamber oil pressure is too high, by power-assisted chamber and the conducting of oil return pipe passage, realize step-down, when pressure decreased during to setting value sealed steel ball close, stop step-down, the screw-in journey amount that can adjust screw according to different automobile types is adjusted different oil pressure, guarantee that power-assisted chamber oil pressure meets car load requirement, in addition, owing to being provided with the first seal ring, the second seal ring and the 3rd seal ring, guarantee not outwards oil impregnate, improved whole sealing property.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the local enlarged diagram of Fig. 1.
The specific embodiment
Below in conjunction with drawings and Examples, further illustrate the utility model.
Embodiment: the utility model comprises the hydraulic booster body 1 that is provided with power-assisted chamber 12, in described hydraulic booster body 1, be also provided with by pass valve housing installation cavity 13, oil return pipe passage 14 and power-assisted chamber passage 11, described oil return pipe passage 14 one end are communicated with by pass valve housing installation cavity 13, passage 11 two ends, described power-assisted chamber are communicated with power-assisted chamber 12 and by pass valve housing installation cavity 13 respectively, described by pass valve housing installation cavity 13 is provided with by pass valve housing 2, described by pass valve housing 2 is provided with by pass valve oil outlet 21 and the valve seat mouth 22 being connected with oil return pipe passage 14 and power-assisted chamber passage 11 respectively, in described by pass valve housing 2, be provided with screw 3, valve seat 4, the spring 6 that sealed steel ball 5 and two ends are connected with valve seat 4 with screw 3 respectively, described valve seat 4 is provided with mounting groove 41, described sealed steel ball 5 is located in mounting groove 41.Between described screw 3 and by pass valve housing 2 inwalls, be provided with the first seal ring 8, between described by pass valve housing 2 and by pass valve housing installation cavity 13, be provided with the second seal ring 9 and the 3rd seal ring 7, described the second seal ring 9 is between oil return pipe passage 14 and screw 3, and described the 3rd seal ring 7 is between oil return pipe passage 14 and power-assisted chamber passage 11.
Principle of work of the present invention is: when the interior oil pressure in power-assisted chamber 12 is too high, the high oil pressure at passage 11 places, power-assisted chamber to sealed steel ball 5 thrust be left greater than 6 pairs of sealed steel balls 5 of spring to the right predetermincd tension, thereby sealed steel ball 5 and valve seat 4 are moved to the left simultaneously, thereby make power-assisted chamber passage 11 and 14 conductings of oil return pipe passage, the interior oil pressure in power-assisted chamber 12 starts off-load, when oil pressure drops to normal value, its to sealed steel ball 5 thrust be left less than 6 pairs of sealed steel balls 5 of spring to the right predetermincd tension, spring 6 promotes steel ball 5 and moves right, thereby shut power-assisted chamber passage 11, power-assisted chamber 12 stops off-load, the screw-in journey amount that also can adjust screw 3 according to different automobile types is adjusted different oil pressure.
Claims (2)
1. a hydraulic booster, comprise the hydraulic booster body (1) that is provided with power-assisted chamber (12), it is characterized in that being also provided with in described hydraulic booster body (1) by pass valve housing installation cavity (13), oil return pipe passage (14) and power-assisted chamber passage (11), described oil return pipe passage (14) one end is communicated with by pass valve housing installation cavity (13), described power-assisted chamber passage (11) two ends are communicated with power-assisted chamber (12) and by pass valve housing installation cavity (13) respectively, described by pass valve housing installation cavity (13) is provided with by pass valve housing (2), described by pass valve housing (2) is provided with by pass valve oil outlet (21) and the valve seat mouth (22) being connected with oil return pipe passage (14) and power-assisted chamber passage (11) respectively, in described by pass valve housing (2), be provided with screw (3), valve seat (4), the spring (6) that sealed steel ball (5) and two ends are connected with valve seat (4) with screw (3) respectively, described valve seat (4) is provided with mounting groove (41), described sealed steel ball (5) is located in mounting groove (41).
2. hydraulic booster according to claim 1, it is characterized in that being provided with the first seal ring (8) between described screw (3) and by pass valve housing (2) inwall, between described by pass valve housing (2) and by pass valve housing installation cavity (13), be provided with the second seal ring (9) and the 3rd seal ring (7), described the second seal ring (9) is positioned between oil return pipe passage (14) and screw (3), and described the 3rd seal ring (7) is positioned between oil return pipe passage (14) and power-assisted chamber passage (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320567962.6U CN203472838U (en) | 2013-09-13 | 2013-09-13 | Hydraulic booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320567962.6U CN203472838U (en) | 2013-09-13 | 2013-09-13 | Hydraulic booster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203472838U true CN203472838U (en) | 2014-03-12 |
Family
ID=50221223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320567962.6U Expired - Fee Related CN203472838U (en) | 2013-09-13 | 2013-09-13 | Hydraulic booster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203472838U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112677948A (en) * | 2021-01-04 | 2021-04-20 | 东风汽车股份有限公司 | Automatic pressurizing system of hydraulic booster and control method thereof |
-
2013
- 2013-09-13 CN CN201320567962.6U patent/CN203472838U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112677948A (en) * | 2021-01-04 | 2021-04-20 | 东风汽车股份有限公司 | Automatic pressurizing system of hydraulic booster and control method thereof |
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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: 20140312 Termination date: 20160913 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |