• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    master cylinder for a regulated braking system. the invention relates to a master cylinder 1 for a regulated braking system with at least one piston 3, 4, 50 movable in a housing 2, which is sealed by means of a sealing element 7, 8, arranged in a slot 5, 6 of housing 2, in relation to a pressure chamber 15,16, which can be connected with a supply chamber 17,18 without pressure through control passages 19, 20, 51 configured in the plunger 3, 41.50. to reduce the flow resistance of the control passages 20, 51, with the same dead stroke, it is proposed according to the invention that the control passages 20, 51 of at least one of the pistons 4, 50 have a control edge 34, 52 configured parallel to a plunger front face 36, 53.
    公开号:BR112012014563B1
    申请号:R112012014563-0
    申请日:2010-12-15
    公开日:2020-12-15
    发明作者:Harald König；Adreas Bischoff；Peter Drott；Makato Inaba；Heinrich Kreh；Filip Janosek；Udo Jungmann
    申请人:Continental Teves Ag & Co. Ohg；
    IPC主号:
    专利说明:

    [0001] The invention relates to a master cylinder for a regulated braking system, with at least one movable piston in a housing, which is sealed in relation to a pressure chamber by means of a sealing element arranged in a housing ring groove, pressure chamber which can be connected to a supply chamber without pressure through control passages configured on the piston.
    [0002] A master cylinder of this type is already known, for example, by DE 10 2004 057 137 A1, and the control passages are foreseen as radial transverse perforations with small cross section and on the inner face, in the perforations region transverse, a surrounding internal groove is configured to keep the dead stroke of the main cylinder as small as possible and, at the same time, to reduce the resistance to strangulation by reducing the length of the transverse perforations.
    [0003] In the case of use in a regulated braking system such as, for example, a braking system with traction slip regulation (ASR) or Electronic stability program (ESP), in the case of a regulation intervention a pump will suck pressure agent from a pressure agent reservoir through the master cylinder. In this case, it is disadvantageous that the small cross section of the transverse perforations generates a very high resistance to flow and the necessary pressure agent of the pump cannot be made available quickly enough.
    [0004] In order to decrease the resistance to flow, in the known master cylinders there is the possibility of predicting a greater number of transverse perforations or to optimize the transverse perforations in terms of their diameter. However, in this solution mentioned above, the disadvantage that flow resistance is reduced in favor of the plunger stability and, in addition, that the prediction of many small transverse perforations is economically unfavorable was found. The second solution has the disadvantage that due to the displacement of the drilling control side edge, it increases the dead stroke (closing stroke) of the master cylinder.
    [0005] Therefore, the invention aims to provide an improved master cylinder in relation to the mentioned disadvantages of the known master cylinder.
    [0006] According to the invention, this objective is achieved due to the fact that the control passages of at least one of the pistons have a control edge configured parallel to a front face of the piston. In this way, keeping the closing stroke equal, it is possible to increase the flow cross section of the control passages, in such a way that it is possible to improve the dynamic behavior in the case of regulation interventions.
    [0007] Preferably, the control passages are provided as axial grooves on an external face of the piston. The axial grooves have the advantage that a definite conduction of the sealing element over the external face of the piston is ensured.
    [0008] A large contact surface of the plunger in relation to the sealing element, respectively in relation to its internal sealing lip, and at the same time, a large groove cross section can be obtained as the axial grooves are dovetailed.
    [0009] An alternative form of carrying out the invention, on the contrary, provides that the control passages are provided as radial breaches of the piston. In this case too, the sealing element is guided over the piston.
    [00010] Parallelism can be easily established insofar as the control passages are provided by stamping on the plunger.
    [00011] According to an advantageous way of carrying out the invention, the plunger is produced from synthetic material, which makes the plunger easy and economical to produce.
    [00012] Another advantageous form of execution provides that the plunger is produced by means of an extrusion process.
    [00013] Preferably, the plunger is designed in the form of a pan with a bottom and on a bottom internal face a first fixing element is provided in the center for a piston readjustment spring.
    [00014] If the master cylinder has a sensor arrangement for monitoring the position and movement of a plunger, then, according to an advantageous way of execution, a second fixing element arranged in the center will be provided on an internal face of the bottom for a magnetic guide element.
    [00015] Other characteristics, advantages and possibilities of application of the invention can be deduced from the following descriptive part of the execution examples, as well as based on the drawings.
    [00016] In a very schematic way, it is shown respectively: Figure 1: a master cylinder according to the invention, of a first example of execution, with a first and a second pistons in longitudinal section; Figure 2: a partial view of the second plunger in figure 1, in a three-dimensional display; Figure 3: another partial view of the second plunger in Figure 1, in a three-dimensional display, partially cut; Figure 4: another partial view of the second plunger in figure 1, in a three-dimensional display; Figure 5: a master cylinder according to the invention, of a second example of execution, with a first and a second piston, in longitudinal section; Figure 6: a plunger from a third example of execution, in a three-dimensional exhibition; Figure 7: an enlarged section of the plunger in figure 6.
    [00017] Figure 1 shows, in longitudinal section, a master cylinder 1 according to the invention of a first execution example, which is used, for example, in a regulated braking system with anti-slip regulation (ASR) and / or an electronic stability program (ESP) and which is designed in the form of a diver and tandem.
    [00018] The master cylinder 1 includes a first and a second piston 3, 4 movable in a housing 2, and in a ring groove 5, 6 of the housing 2 a sealing element 7, 8, in the form of a ring circular, with an internal sealing lip 9, 10 dynamically ordered, as well as with an external sealing lip 11, 12 statically ordered. The dynamically requested inner sealing lip 9, 10 abuts, by means of a first sealing surface, on the piston 3, 4 and the statically requested external sealing lip 11, 12 abuts, by means of a second sealing surface, in a bottom of annular groove 5, 6. An outer face 13, 14 of the pistons 3, 4 serves as a guide surface.
    [00019] A first and a second pressure chamber 15, 16, in a non-actuated state of the master cylinder 1, shown in figure 1, are connected via a pressure agent channel, not shown, and a pressure chamber supply 17, 18 in housing 2, as well as through control passages 19, 20 in a pan-shaped wall 21, 22 of the first and second pistons 3, 4, with a pressure-less pressure vessel, does not show - of. In this case, the pistons 3, 4 are under tension by means of readjustment springs 23, 24.
    [00020] The adjustment spring 23, 24 is respectively arranged, at least partially, within the wall 21, 22 in the form of a pan. As is evident in Figure 1, the wall 21 of the first plunger is crossed in the center by a centralized pin 25, which ends before its axial exit from the wall 21. This end 26 is provided with a stop 27 for a sleeve 28 , which cooperates with a collar 29 in such a way that the sleeve 28 can work as a telescope to a limited extent in relation to the pin 25. In other words, the sleeve 28, with the readjustment spring 23, is pushed into the interior of the plunger when actuation occurs. As can be deduced, in the case of the stop 27 it is preferably an annular disk riveted in the pin 25 - especially riveted in an oscillating manner. The end of the other side of the sleeve 28 has the collar 29 in the form of a plate for the contact of the readjustment spring 23.
    [00021] The second plunger 4 has, at its bottom 31, a first fixing element 32, which extends from an internal face of the bottom 31, centrally, inside the wall 22 for fixing and positioning the readjustment spring 24.
    [00022] For the actuation of the master cylinder 1, the first piston 3 is displaced in the driving direction A. In this process, the movement of the first piston 3 is transmitted through the readjustment spring 23 to the second piston 4. As soon as the control passages 19, 20, with their control edges 33, 34 to be described in detail below, are located in the region of the sealing elements 7, 8, that is, the control edges 33, 34 are crossed, the so-called dead stroke (closing stroke) of master cylinder 1 will have been exceeded, since no pressure agent can reach the pressure chambers 15, 16 from supply chambers 17, 18 through control passages 19, 20. The connection of the pressure chambers 15, 16 with the pressure agent reservoir is interrupted and in the pressure chambers 15, 15 pressure build-up occurs.
    [00023] In the case of an ASR or ESP-type intervention, it may be necessary, with the pistons 3, 4 activated or not activated, that the pressure agent is sucked from the pressure agent reservoir through, respectively, the pressure chamber 15, 16 in the direction of the wheel brakes, which preferably occurs by means of a pump, the input of which can be optionally connected with the pressure chambers 15, 16 of the master cylinder 1 or with the wheel brakes, a in order to extract and transport (feedback principle) in the direction of the wheel brakes or in the direction of the master cylinder 1. For this, in the case of an intervention type ASR or ESP, in the non-activated state of the master cylinder 1, the agent pressure is sucked from the pressure agent reservoir through the pressure agent channels, supply chambers 17, 18, control passages 19, 20 and pressure chambers 15, 16. In the event of an intervention ESP type, in the activated state of the master cylinder 1, the suction o additionally occurs through the overflow of the external sealing lip 11, 12 from the sealing elements 7, 8, as this, due to the suction pressure, falls towards the internal sealing lips 9, 10 and, thus, the sealing surface of the external sealing lip 11, 12 no longer touches the bottom of the ring groove 5, 6. In the event of an ASR or ESP-type intervention, especially in the non-actuated position of the master cylinder 1, so that the pump can quickly a sufficient amount of pressure agent is available, it is necessary to keep the flow resistance of the control passages 19, 20 to a minimum, while, however, the dead stroke of the master cylinder 1 must also be kept as small as possible.
    [00024] In the region of the control passages 19 of the first piston 3, to reduce the resistance to strangulation, an inner radial groove 35 is provided on an internal face of the piston 3, which decreases the length of the control passages 19 provided as radial transversal perforations.
    [00025] Figures 2 to 4 show partial views of the second plunger 4 in an enlarged and three-dimensional exposure, partially cut.
    [00026] To increase the flow passage surface of the control passages 20 of the second plunger 4, the control passages 20 have a control edge 34 configured parallel to a front face of the plunger 36. In this way, it is possible, with the same closing stroke, increase the flow passage cross section of the control passages 20, in such a way that the dynamic behavior of the master cylinder 1 can be improved in the case of regulation interventions.
    [00027] As is evident, the control passages 20 according to the shown example, are designed as axial grooves on the outer face 14 of the piston 4. These can be incorporated into the piston 4 in a simple way, such as by molding or stamping, when the plunger 4 is made of synthetic material, making the plunger 4 be produced in a simple and economical way. The stability of the plunger 4 is not influenced by the axial grooves, as the plunger 4 can have a stronger wall 22, without disadvantages in terms of weight and other necessary properties.
    [00028] An alternative form of execution provides that the plunger 4 is produced by means of an extrusion process. In this case, for example, aluminum can be used as a material. Here too, parallel control edges 34 and axial grooves can be easily provided.
    [00029] A groove end 54 of the axial grooves can be designed in a conical shape, as shown in figure 3, a radius configuration (convex or concave) is also conceivable within the scope of the invention. The shape of the groove can also be designed differently. They can be incorporated into the plunger 4 basically in the form of a dovetail, for example, as shown. The dovetail groove shape has the advantage that the contact surface of the plunger 4 for the sealing element 8, respectively for its inner sealing lip 10, is increased and, at the same time, it is possible to present a larger cross-section of the flow passage due to an increased diameter of the groove at the bottom of the groove.
    [00030] However, rectangular, wavy, rounded or v-shaped grooves are also possible.
    [00031] The described control passages 20 also have the advantage that a sealing heel 37 of the sealing element 8 is guided, in a definite way, on the outer face 14 of the piston 14 and cannot penetrate the control passages 20. Such a danger would occur, for example, in the case of a surrounding groove.
    [00032] As can be deduced from figure 3, the first fixing element 32 is provided with three arms, with the individual arms 38 being beveled for easy assembly and positioning of the readjustment spring 24.
    [00033] Figure 4 shows an external view of the bottom 31 of the second plunger 4. It is evident that from a external face of the bottom 31 extends a second fixing element 39 disposed in the center, in the form of a shoulder in the form Circular. This fulfills its function when the master cylinder 1, according to the second form of execution shown in figure 5 and described below, has a sensor arrangement for monitoring the position and movement of the piston 3 and a magnetic guide element 40 touch the second plunger 4.
    [00034] The magnetic guide element 40, shown in figure 5, by means of a flange-shaped section 41 abuts the bottom 31 of the second plunger 4. In this case, in the flange-shaped section 41 a corresponding recess 42 is provided to the second fixing element 39, this recess by means of which the magnetic guide element 40 is fixed and positioned on the second piston 4.
    [00035] The magnetic guide element 40 additionally has a pin-shaped section 43 directed in the opposite direction to pin 25 of the first piston 3, which serves as a means for conducting a permanent magnet 44.
    [00036] Magnet 44 serves as a signal emitter for a position indicator and sends a magnetic field radially towards a sensor element not shown - preferably in the form of a Hall-type sensor, a magnetic-resistive sensor or a contact type Reed -, which is provided immobile in frame 2, and can be connected with an electronic control unit not shown, to enable position detection.
    [00037] The magnet 44 has an annular shape and, as can be seen, is arranged between discs 45, 46 of magnetic material on a cylindrical support 47 of non-magnetic material, which has a belt 48 for the axial contact of the magnet 44 .
    [00038] As shown in figure 5, the support 47 with the magnet 44, on the one hand, is under the action of the readjusting spring 23 of the first piston 3 and, on the other hand, under the action of another spring element 49, which is supported on the second piston 4, in such a way that the magnet 44 is clamped to some extent between the pistons 3, 4, as well as movably with respect to these. However, the spring force of the readjustment spring 23 is greater than the spring force of the other spring element 49. In this way, a displacement, dependent on actuation, of the magnet 44 is possible, even when the second piston 4 is fixed and immobile due to the adjustment of the driving dynamics.
    [00039] The configuration described for the second piston 4 of the two execution examples provides, in addition to improving the dynamics, also the other advantages that, for example, through a shorter adjustment spring 24 it is possible to shorten the entire constructive length of the master cylinder 1 and that the master cylinder 1 has less individual parts in total. In addition, within the scope of the invention, it is also possible to design the first piston 3 with the control passages 20 described in the form of axial grooves and with the first fixing element 32.
    [00040] A plunger 50 can be deduced from figures 6 and 7 of a third example of execution, which can be predicted as the first and / or second plunger of the master cylinder 1. As is shown in particular in figure 7, which shows an enlarged cutout of the plunger 50, the control passages 51 of the plunger 50 have a control edge 52 projected parallel to a front face of the plunger 53. Unlike the first two execution examples, the control passages 51 are provided as radial gaps in the plunger 50, which, as described above, can be produced from synthetic material or by means of an extrusion process. The parallel control edge 52 also has the advantage that, with the same closing stroke, it is possible to increase the flow passage cross section of the control passages 52, in such a way that the dynamic behavior of the master cylinder 1 remains improved in the case of regulatory interventions. The remaining shape of the control passages 51 can be adapted to the corresponding conditions of the plunger.
    [00041] Another example of execution, not shown, provides that the control passages start radially and extend as an axial groove that runs under the sealing element. Reference List 1 master cylinder 2 housing 3 plunger 4 plunger 5 ring groove 6 ring groove 7 sealing element 8 sealing element 9 inner sealing lip 10 inner sealing lip 11 outer sealing lip 12 outer sealing lip 13 outer face 14 outer face 15 pressure chamber 16 pressure chamber 17 supply chamber 18 control passage 20 control passage 21 wall 22 wall 23 adjustment spring 24 adjustment spring 25 pin 26 end 27 stop 28 sleeve 29 collar 30 collar 31 bottom 32 fixing element 33 control edge 34 control edge 35 internal groove 36 front plunger face 37 trim heel 38 arm 39 fixing element 40 magnetic guide element 41 flange-shaped section 42 recess 43 shaped section stud 44 magnet 45 disc 46 disc 47 support 48 strap 49 spring element 50 plunger 51 control passage 52 control edge 53 front face of plunger 54 end of groove ura The driving direction
    权利要求:
    Claims (7)
    [0001]
    1. Master cylinder (1) for a regulated braking system with at least one piston (3, 4, 50) movable in a housing (2) which is sealed by means of a sealing element (7, 8) , arranged in an annular groove (5, 6) of the housing (2), in relation to a pressure chamber (15, 16), which can be connected with a supply chamber (17, 18) without pressure through passages control (19, 20, 51) configured on the piston (3, 4, 50), characterized by the fact that the control passages (20) are provided as axial grooves on an external face (14) of the piston (4) or radial gaps in the piston (50), one end of the groove (54) of the axial grooves having a conical or round shape and the control passages (20, 51) of at least one of the pistons (4, 50) in the region of the sealing elements (7, 8) a control edge (34, 52) configured parallel to a piston front face (36, 53).
    [0002]
    2. Master cylinder (1) according to claim 1, characterized by the fact that the axial grooves are provided in the form of a dovetail.
    [0003]
    3. Master cylinder (1) according to claim 1 or 2, characterized by the fact that the control passages (20, 51) are provided as punches on the piston (4, 50).
    [0004]
    4. Master cylinder (1) according to any of the previous claims, characterized by the fact that the plunger (4, 50) is made of synthetic material.
    [0005]
    5. Master cylinder (1) according to any of the previous king-vindications of 1a 5, characterized by the fact that the piston (4, 50) is produced by means of an extrusion process.
    [0006]
    6. Master cylinder (1) according to any of the previous claims, characterized by the fact that the plunger (4) is configured in a pan shape with a bottom (31) and on the inner face of the bottom (31 ) a first fixing element (32) is provided in the center for a readjustment spring (24) of the piston (4).
    [0007]
    7. Master cylinder (1) according to any of the previous claims, characterized by the fact that a second fixing element (39) is arranged on the outer face of the bottom (39) arranged in the center for an magnetic guide (40).
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB768162A|1953-10-14|1957-02-13|Heinz Teves|Single-stage master cylinder for hydraulic brakes, more particularly for motor vehicles|
    US4998461A|1988-03-08|1991-03-12|Nippon Air Brake Co., Ltd.|Two-part plastic piston with excess resin receiving groove|
    US5191765A|1989-04-21|1993-03-09|Alfred Teves Gmbh|Master cylinder for a hydraulic brake system and steering brake system|
    US4945728A|1989-06-26|1990-08-07|General Motors Corporation|Center compensating tandem master cylinder with seals in cylinder wall|
    DE10129971A1|2001-06-21|2003-01-02|Ina Schaeffler Kg|Pistons for cylinders in hydraulic systems|
    JP4141878B2|2003-03-28|2008-08-27|株式会社日立製作所|Transaction processing method, apparatus for executing the same, and processing program therefor|
    RU2006122802A|2003-12-09|2008-01-20|Контиенталь Тевес Аг Унд Ко. Охг |METHOD AND DEVICE FOR REGULATING A CAR WITH AN ELECTRICALLY CONTROLLED BRAKE SYSTEM WITH REGULATION OF MOTION DYNAMICS|
    DE102004058875A1|2003-12-09|2005-08-25|Continental Teves Ag & Co. Ohg|Controlling motor vehicle with electrically regulated brakes, driving dynamic control involves detecting magnetic field variation when main cylinder piston moves, evaluating digital and analog signals in electronic control/regulating unit|
    DE102004057137A1|2004-01-09|2005-08-25|Continental Teves Ag & Co. Ohg|Master cylinder for regulated brake system has recesses in inside of piston, in which transverse boreholes end|
    DE502004004778D1|2004-01-09|2007-10-04|Continental Teves Ag & Co Ohg|MAIN CYLINDER PARTICULARLY FOR A CONTROLLED BRAKING SYSTEM|
    US7219495B2|2004-06-04|2007-05-22|Zf Friedrichshafen Ag|Hydraulic cylinder|
    JP5105601B2|2005-05-27|2012-12-26|ボッシュ株式会社|Master cylinder|
    US20080098886A1|2006-10-27|2008-05-01|Hydro-Components Research And Development Corporation|Piston assembly and method of manufacturing piston assembly|
    KR20080082754A|2007-03-09|2008-09-12|현대모비스 주식회사|Master cylinder of brake|
    KR20080086654A|2007-03-23|2008-09-26|주식회사 만도|Master cylinder for brake system|
    US8646268B2|2008-01-22|2014-02-11|Korea Delphi Automotive Systems Corporation|Master cylinder for a vehicle|
    DE102009004717A1|2008-01-24|2009-07-30|Luk Lamellen Und Kupplungsbau Beteiligungs Kg|Piston for hydraulic cylinder i.e. master cylinder, for e.g. brake system of motor vehicle, has dynamic and static seals, where piston is divided into two regions such that dynamic seal seals in region and static seal sits in other region|
    DE102009004747A1|2009-01-13|2010-07-15|Christoph Zurowski|Stand aligning and adjusting device for stone-working machine i.e. core boring machine, has positioning device that is fastened to frame and simulates Z-axis of rock or concrete drill of stone-working machine|FR2969086B1|2010-12-21|2016-04-29|Bosch Gmbh Robert|TANDEM MASTER CYLINDER PRIMER PISTON AND MASTER TANDEM MASTER CYLINDER EQUIPPED WITH SUCH A PRIMARY PISTON|
    DE102011075359A1|2011-05-05|2012-11-08|Continental Teves Ag & Co. Ohg|Master cylinder, in particular for a regulated braking system|
    FR2989045A1|2012-04-06|2013-10-11|Bosch Gmbh Robert|Primary piston for tandem master braking cylinder of car, has hole comprising inner surface whose intersection point is located in front of another intersection point of inner surface of hole and of inner surface of piston|
    DE102012014321A1|2012-07-19|2014-01-23|Lucas Automotive Gmbh|Master brake cylinder for a motor vehicle brake system with profiled pressure piston|
    JP5919155B2|2012-09-26|2016-05-18|日信工業株式会社|Hydraulic master cylinder and method of manufacturing piston of hydraulic master cylinder|
    JP5827215B2|2012-12-28|2015-12-02|本田技研工業株式会社|Hydraulic pressure generator|
    EP2951068B1|2013-01-30|2019-05-15|Continental Teves AG & Co. OHG|Master vehicle brake cylinder|
    DE102014201699A1|2013-01-30|2014-07-31|Continental Teves Ag & Co. Ohg|Master brake cylinder for a hydraulic motor vehicle brake system|
    FR3007721B1|2013-06-27|2016-11-11|Bosch Gmbh Robert|TANDEM MASTER CYLINDER PRIMARY PISTON|
    DE102014215722A1|2013-09-04|2015-03-05|Schaeffler Technologies Gmbh & Co. Kg|Master cylinder|
    DE102013220738A1|2013-10-14|2015-04-16|Continental Teves Ag & Co. Ohg|Master brake cylinder for a hydraulic brake system|
    KR20170037099A|2015-09-25|2017-04-04|주식회사 만도|Master cylinder for brake system|
    DE102016223760A1|2016-11-30|2018-05-30|Robert Bosch Gmbh|Master brake cylinder, brake system|
    DE102016224756A1|2016-12-12|2018-06-14|Continental Teves Ag & Co. Ohg|Hydraulic unit with a piston|
    DE102017223678A1|2017-12-22|2019-06-27|Continental Teves Ag & Co. Ohg|Aggregate with at least one piston with an associated piston spring|
    JP2020055398A|2018-10-01|2020-04-09|株式会社アドヴィックス|Master cylinder|
    法律状态:
    2019-01-08| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-10-15| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-09-08| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-12-15| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 15/12/2020, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102009054695.2|2009-12-15|
    DE102009054695A|DE102009054695A1|2009-12-15|2009-12-15|Master cylinder for a regulated braking system|
    PCT/EP2010/069729|WO2011082999A1|2009-12-15|2010-12-15|Master cylinder for a regulated braking system|
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