CN104508300A - Low pressure sealing ring for a pump element of a hydraulic unit - Google Patents
Low pressure sealing ring for a pump element of a hydraulic unit Download PDFInfo
- Publication number
- CN104508300A CN104508300A CN201380040482.7A CN201380040482A CN104508300A CN 104508300 A CN104508300 A CN 104508300A CN 201380040482 A CN201380040482 A CN 201380040482A CN 104508300 A CN104508300 A CN 104508300A
- Authority
- CN
- China
- Prior art keywords
- low pressure
- seal circle
- pressure seal
- pump
- pump case
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4031—Pump units characterised by their construction or mounting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0408—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0421—Cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0448—Sealing means, e.g. for shafts or housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/02—Packing the free space between cylinders and pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/143—Sealing provided on the piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
- F04B53/162—Adaptations of cylinders
- F04B53/164—Stoffing boxes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3268—Mounting of sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention relates to a low pressure sealing ring (58) for a pump element (10) of a hydraulic unit of a motor vehicle brake system, comprising a pump housing (12) and a pump piston (24) that is led in a movable manner in the pump housing, wherein said low pressure sealing ring is adapted to seal with respect to the pump housing (12) and for sealing with respect to the pump piston (24) and further comprises a stepping (66), by means of which said pump piston can be positioned on a recess (18) on the pump housing (12).
Description
Technical field
The present invention relates to a kind of low pressure seal circle of the pump unit for motor vehicle braking system hydraulic equipment, described pump unit has pump case and pump piston directed movably in pump case, and wherein, described low pressure seal circle is applicable to seal cage and canned pump piston.In addition, the invention still further relates to the application of this low pressure seal circle on the pump unit of motor vehicle braking system hydraulic equipment.
Background technique
As on motor vehicle braking system for there is pump case in the hydraulic equipment of retardation pressure during regulating anti-lock function, particularly can move supporting at least two pistons in pump case.Two pistons are by unique radial gear axially reciprocating and in this manner to each one the pressure chamber's suction formed before piston and from this pressure chamber's output hydraulic pressure fluid.Pressure chamber is in this regard by casing own or also in the cylinder encirclement that piston side seals.Cylinder and piston form a pump unit like this, often compress from the outside in its shoulder hole being arranged on shell.Piston stretches in region residing on radial gear end in shell in this regard further.The pipeline of delivering hydraulic fluid in cylinder is also formed in this region being called low pressure area here.The annular space meanwhile existed in principle between piston and shell must seal by low pressure seal circle.Therefore low pressure seal circle seals between low pressure area and the eccentric room belonging to radial gear.Low pressure seal circle used in this regard preferably forms also therefore softer as the O shape circle mostly manufactured by EPDM (ethylene propylene diene rubber) or Q shape circle.They advantageously seal between pump case and pump piston, but also face the danger overturn between pump case and pump piston in the most adverse case simultaneously.Low pressure seal circle can be caused like this to damage and blow-by.
Summary of the invention
According to the present invention, provide a kind of low pressure seal circle of the pump unit for motor vehicle braking system hydraulic equipment, described pump unit has pump case and pump piston directed movably in pump case.Low pressure seal circle is applicable to seal cage and canned pump piston.In addition, low pressure seal circle also has step, can be positioned on the shoulder at pump case place by low pressure seal circle described in this step.So this step particularly points to radially outer and abuts on the shoulder of sensing inner radial of pump case.
By according to low pressure seal circle of the present invention, the sealing between pump case and pump piston particularly improves in the following manner: low pressure seal circle utilizes its step to be placed on the shoulder at pump case place.First the through-flow of brake fluid that make produced to a certain degree by this step becomes difficult labyrinth effect.At least slightly the low pressure seal circle be positioned on this step can be pressed to vertically in addition on pump case and if desired also can this low pressure seal circle of axial compression at least slightly at this.The low pressure seal circle of such axial compression, due to the elasticity of its material, radial direction also presses against on adjacent parts and also therefore particularly presses against on pump piston.Also the task of tolerance compensating, namely the pump unit place tolerance compensating axially of length tolerance is born to a certain extent according to low pressure seal circle of the present invention.The assembling of low pressure seal circle is simplified, because its location and position very simply and automatically can identify by step.It is finally noted that, by according to solution of the present invention, particularly the inclination of low pressure seal circle on pump piston reliably can also be prevented.
Described step sees in the cross section of low pressure seal circle, is preferably configured as right angle.This step all can manufacture inexpensively in pump case and in low pressure seal circle.This step has very strong labyrinth effect and can realize the reliable installation of low pressure seal circle.
Advantageously, and then be formed with described step be seen as primary sealing area that is straight, that seal towards pump case in the cross section of low pressure seal circle.The primary sealing area of such formation makes low pressure seal circle locate diametrically relative to pump case.Sealing face also additionally guarantees to seal as much as possible between pump case and pump piston.In addition, preferably in order to improve be sealed in low pressure seal circle be provided with for be sealed on pump case first sealing ridge.
According on low pressure seal circle of the present invention, advantageously generate in addition and be seen as secondary sealing area that is straight, that seal towards pump piston in the cross section of low pressure seal circle.Pump piston slides along this secondary sealing area, and wherein, sealing face particularly advantageously contributes to forming uniform lubricating film between low pressure seal circle and pump piston.Preferably, ridge is being sealed according to then low pressure seal circle of the present invention is also provided with for being additionally sealed to second on pump piston.
Low pressure seal circle be preferably configured with in addition side, towards the 3rd sealing surface of adjacent parts, particularly filter seal.3rd sealing surface is used as the surface of contact of adjacent component, is pressed against vertically on pump case by low pressure seal circle, low pressure seal circle can be made thus both uniquely positioningly, also to cling on pump case hermetically by this surface of contact.
Correspondingly, the invention still further relates to a kind of this according to the application of low pressure seal circle of the present invention on the pump unit of motor vehicle braking system hydraulic equipment.This pump unit has pump case, pump piston directed movably in pump case and the filter for filtering the brake fluid in inflow pump unit.At this, another parts on the shoulder that low pressure seal circle utilizes its step to be positioned at pump case and by pump unit press against on pump case.
As already mentioned, by this application according to low pressure seal circle of the present invention, very advantageously in the length of pump unit, produce tolerance compensating.In addition, low pressure seal circle improves owing to compressing to pump case on step to the sealing of pump case.Low pressure seal circle is subject to axial compression at this simultaneously, hence improves the sealing of low pressure seal circle to pump piston.Therefore produce low pressure seal circle not only externally to pump case, but also in inside to the radial compaction of pump piston.This compression can utilize the axially impacting force be applied on low pressure seal circle to adjust to desired amount exactly.
Accompanying drawing explanation
By schematic figures, the embodiment according to solution of the present invention is described in detail below.Wherein:
Fig. 1 shows an embodiment of the pump unit of the low pressure seal circle had according to prior art with longitudinal section;
Fig. 2 shows an embodiment of the pump unit had according to low pressure seal circle of the present invention with longitudinal section; And
Fig. 3 shows low pressure seal circle in Fig. 2 to amplify longitudinal section.
Embodiment
Fig. 1 shows the pump unit 10 of hydraulic equipment, and this pump unit is arranged in block pump case 12.Hydraulic equipment particularly can realize anti-lock function, anti-slip function and traveling dynamic adjustments function (ABS, ASR and ESP) on the vehicle brake of the motor vehicle braking system of correspondence.
In pump case 12, form shoulder hole 14, pump unit 10 is set in this shoulder hole.Shoulder hole 14 has three shoulders 16,18 and 20, is reduced with increasing from outside to inside by these shoulder diameters 14 in cascade.Pump unit 10 has the pumping cylinder 22 of multi-part type, and this pumping cylinder surrounds the pump piston 24 being similarly multi-part type.
The pumping cylinder 22 of multi-part type comprises an annular filter 26, on this filter, can carry brake fluid by entrance 28 from radially outer to inner radial through pump case 12.Point to axially externally, cylinder cup 30 is connected with this filter 26, surrounds pressure chamber 32 by this cylinder cup.Then be positioned at the cylinder cap 34 be externally provided with the ground densification of pump case 12 Fluid Sealing completely, by this cylinder cap by filter 26 and cylinder cup 30 and therefore whole pump unit 10 remain in shoulder hole 14.In cylinder cap 34, be provided with expulsion valve 36, the brake fluid be under pressure can be made controllably to export to outlet 38 from pressure chamber 32 by this expulsion valve.
The pump piston 24 of multi-part type is configured with columniform piston rod 40, and this piston rod is arranged in the inner most region of axis in hole 14.Eccentric wheel 44 can at one end face 42 make piston rod 40 move out from hole 14 vertically.On the other end 46 of piston rod 40, piston sleeve 48 and this piston rod adjoin, and the brake fluid flowed into by entrance 28 and filter 26 can continue to flow to inner radial through this piston sleeve.Then piston seal dish 50 adjoins with piston sleeve 48 vertically, wherein, is provided with and enters valve 52 for being transported to by the brake fluid of inflow in pressure chamber 32 between piston sleeve 48 and piston seal dish 50.
Piston rod 40 is directed by guide collar 54, bracing ring 56 and low pressure seal circle 58 in the aft section of shoulder hole 14 as a part for pump piston 24.The sealing between the eccentric wheel region 62 of fully pressure-free power that the low pressure area 60 and eccentric wheel 44 that filter 26 exists exists is provided in by low pressure seal circle 58.
Traditional low pressure seal circle 58 is arranged between filter 26 and bearing ring 56 according to Fig. 1 in the case, in a pure columniform region 64 of shoulder hole 14.In order to support and be fixed in shoulder hole 14 by pump unit 10, filter 26 utilizes its inner end to abut on the second shoulder 18 and is supported on this second shoulder.
Fig. 2 and Fig. 3 shows according to low pressure seal circle 58 of the present invention, and it radially points to other places and points to the rectangular step 66 of radially outward tool in other words, and low pressure seal circle utilizes this step to be positioned on the shoulder 18 of pump case 12.One side produces labyrinth effect to a certain degree by step, on the other hand low pressure seal circle 58 due to be radially applied to it squeeze pressure not only side compression be outside pressed on pump piston 24 in inner side on pump case 12, the step 66 be supported on like this on pump case 12 of low pressure seal circle 58 improves the sealing between pump case 12 and the pump piston 24 at low pressure area 60 place thus.
The low pressure seal circle 58 of such formation and maintenance particularly advantageously meets its novel sealing function in the following manner: this low pressure seal circle and step 66 immediately land have to be seen as in the cross section of low pressure seal circle 58 straight, to seal towards seal cage 12 and to point to the primary sealing area 68 in eccentric wheel region 62.Sealing surface 68 stops with first of the same sealing for pump case 12 place the sealing ridge 70.In addition, low pressure seal circle 58 also has at radially inner side and is seen as secondary sealing area 72 that is straight, that seal towards pump piston 24 in cross-section, and this secondary sealing area stops towards eccentric wheel room 62 with the second sealing ridge 74.Low pressure seal circle 58 is configured with the 3rd sealing surface 76 on its end face towards filter 26.3rd sealing surface 76 is used as the surface of contact of adjacent filter 26, by this filter, low pressure seal circle 58 is pressed against on pump case 12 vertically.Low pressure seal circle 58 both uniquely positioningly, was also pressed on pump case 12 and pump piston 24 especially hermetically thus.
Claims (8)
1. for the low pressure seal circle (58) of the pump unit (10) of motor vehicle braking system hydraulic equipment, described pump unit has pump case (12) and pump piston directed movably in this pump case (24), wherein, described low pressure seal circle (58) can seal described pump case (12) and seals described pump piston (24) and have step (66) in addition, can be positioned on the shoulder (18) at pump case (12) place by low pressure seal circle described in this step.
2. low pressure seal circle as claimed in claim 1, wherein, described step (66) is seen as right angle in the cross section of low pressure seal circle (58).
3. low pressure seal circle as claimed in claim 1 or 2, wherein, and then be formed with described step (66) and be seen as primary sealing area (68) that is straight, that seal towards described pump case (12) in the cross section of described low pressure seal circle (58).
4. low pressure seal circle as claimed any one in claims 1 to 3, wherein, is provided with the first sealing ridge (70) for being sealed on described pump case (12).
5. the low pressure seal circle according to any one of Claims 1-4, wherein, is formed and is seen as secondary sealing area (72) that is straight, that seal towards described pump piston (24) in the cross section of described low pressure seal circle (58).
6. the low pressure seal circle according to any one of claim 1 to 5, wherein, is provided with the second sealing ridge (74) for being sealed on described pump piston (24).
7. the low pressure seal circle according to any one of claim 1 to 6, wherein, the 3rd sealing surface (76) that be formed with side, that seal towards adjacent parts, particularly filter (26).
8. the application of the low pressure seal circle (58) according to any one of claim 1 to 7 on the pump unit (10) of motor vehicle braking system hydraulic equipment, described pump unit has pump case (12), pump piston (24) directed movably in this pump case and the filter (26) for filtering the brake fluid flowed in described pump unit (10), wherein, described low pressure seal circle (58) utilizes its step (66) to be positioned at upper and another parts (26) by described pump unit (10) of the shoulder (18) of pump case (12) and presses against on described pump case (12).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012213763.7 | 2012-08-03 | ||
| DE102012213763.7A DE102012213763A1 (en) | 2012-08-03 | 2012-08-03 | Low-pressure sealing ring for a pump element of a hydraulic unit |
| PCT/EP2013/061688 WO2014019748A1 (en) | 2012-08-03 | 2013-06-06 | Low pressure sealing ring for a pump element of a hydraulic unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104508300A true CN104508300A (en) | 2015-04-08 |
| CN104508300B CN104508300B (en) | 2016-10-26 |
Family
ID=48607242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380040482.7A Expired - Fee Related CN104508300B (en) | 2012-08-03 | 2013-06-06 | Low pressure seal circle for the pump unit of hydraulic test |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2880311A1 (en) |
| KR (1) | KR102084929B1 (en) |
| CN (1) | CN104508300B (en) |
| DE (1) | DE102012213763A1 (en) |
| WO (1) | WO2014019748A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114094381A (en) * | 2021-10-28 | 2022-02-25 | 中航光电科技股份有限公司 | Sealing connector |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013226817A1 (en) * | 2013-12-20 | 2015-06-25 | Robert Bosch Gmbh | hydraulic power unit |
| KR102390510B1 (en) * | 2017-07-31 | 2022-04-26 | 현대모비스 주식회사 | Pump device for electronic control brake system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006035055A1 (en) * | 2006-07-28 | 2008-01-31 | Robert Bosch Gmbh | Sealing and guiding unit for piston, has guide bush for guiding piston, and pretensioning unit arranged outside internal sealing region of sealing unit and bearing radially directed force on internal sealing region |
| US20080226479A1 (en) * | 2005-09-06 | 2008-09-18 | Wolfgang Schuller | Piston Pump With Improved Piston |
| CN102086859A (en) * | 2009-12-07 | 2011-06-08 | 罗伯特·博世有限公司 | Piston pump and hydraulic device of vehicle brake system, and vehicle brake system |
| US20110239857A1 (en) * | 2010-03-31 | 2011-10-06 | Nissin Kogyo Co., Ltd. | Piston pump |
| DE102010040135A1 (en) * | 2010-09-02 | 2012-03-08 | Robert Bosch Gmbh | Piston guiding element for cylinder-piston-unit and piston guiding element assembly of hydraulic piston pump of vehicle braking system for guiding piston into pump housing, has low pressure side sealing unit arranged on curved surface area |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19704250A1 (en) * | 1997-02-05 | 1998-08-06 | Itt Mfg Enterprises Inc | Piston sealing ring edged by two abutting surfaces |
| DE102005045937B4 (en) * | 2005-09-26 | 2014-10-30 | Robert Bosch Gmbh | Piston pump for a slip control vehicle brake system |
| DE102008040140A1 (en) * | 2008-07-03 | 2010-01-07 | Robert Bosch Gmbh | piston pump |
-
2012
- 2012-08-03 DE DE102012213763.7A patent/DE102012213763A1/en active Pending
-
2013
- 2013-06-06 WO PCT/EP2013/061688 patent/WO2014019748A1/en active Application Filing
- 2013-06-06 KR KR1020157002765A patent/KR102084929B1/en active IP Right Grant
- 2013-06-06 EP EP13728160.6A patent/EP2880311A1/en not_active Withdrawn
- 2013-06-06 CN CN201380040482.7A patent/CN104508300B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080226479A1 (en) * | 2005-09-06 | 2008-09-18 | Wolfgang Schuller | Piston Pump With Improved Piston |
| DE102006035055A1 (en) * | 2006-07-28 | 2008-01-31 | Robert Bosch Gmbh | Sealing and guiding unit for piston, has guide bush for guiding piston, and pretensioning unit arranged outside internal sealing region of sealing unit and bearing radially directed force on internal sealing region |
| CN102086859A (en) * | 2009-12-07 | 2011-06-08 | 罗伯特·博世有限公司 | Piston pump and hydraulic device of vehicle brake system, and vehicle brake system |
| US20110239857A1 (en) * | 2010-03-31 | 2011-10-06 | Nissin Kogyo Co., Ltd. | Piston pump |
| DE102010040135A1 (en) * | 2010-09-02 | 2012-03-08 | Robert Bosch Gmbh | Piston guiding element for cylinder-piston-unit and piston guiding element assembly of hydraulic piston pump of vehicle braking system for guiding piston into pump housing, has low pressure side sealing unit arranged on curved surface area |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114094381A (en) * | 2021-10-28 | 2022-02-25 | 中航光电科技股份有限公司 | Sealing connector |
| CN114094381B (en) * | 2021-10-28 | 2024-04-16 | 中航光电科技股份有限公司 | Sealing connector |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20150040896A (en) | 2015-04-15 |
| KR102084929B1 (en) | 2020-03-05 |
| WO2014019748A1 (en) | 2014-02-06 |
| DE102012213763A1 (en) | 2014-02-06 |
| EP2880311A1 (en) | 2015-06-10 |
| CN104508300B (en) | 2016-10-26 |
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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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161026 Termination date: 20210606 |
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| CF01 | Termination of patent right due to non-payment of annual fee |