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公开(公告)号：US20220388488A1
公开(公告)日：2022-12-08
申请号：US17767307
申请日：2020-08-20
申请人： Robert Bosch GmbH
发明人： Matthias Greiner
IPC分类号： B60T11/224 , F16H25/20
摘要： A piston actuation device for the supply of a pressure medium in a pressure medium circuit of a brake system of a motor vehicle. A piston actuation device includes a piston actuable by a spindle drive to execute a back-and-forth translation movement in the direction of a piston guidance axis. The spindle drive has a spindle nut and a spindle that cooperates with the spindle nut via a screw drive. The screw drive converts a rotation movement of the spindle nut into a translation movement of the spindle in the direction of a spindle movement axis. To transmit the translation movement to the piston, the piston and the spindle are connected to each other in an axially fixed manner. The axially fixed connection between the piston and the spindle includes an articulated joint, which allows for a concentricity deviation between the piston guidance axis and the spindle movement axis.
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公开(公告)号：US20210122344A1
公开(公告)日：2021-04-29
申请号：US17062714
申请日：2020-10-05
申请人： SUBARU CORPORATION
发明人： Yusuke ANDO , Naozumi YOSHIO
IPC分类号： B60T11/236 , B60T11/224 , B60T11/26
摘要： A master cylinder device includes a reservoir tank, a master cylinder, a piston, and a pair of cup seals. The master cylinder includes a cylinder body having a cylinder chamber and a master port. The piston is inserted into the cylinder chamber, and has a relief port that communicates with the master port. The cup seals are provided on an inner circumference of the cylinder chamber, being positioned in front and rear of the master port, and seals a space between the inner circumference of the cylinder chamber and an outer circumference of the piston. The relief port is closed by the front cup seal, as the piston moves forward, to generate brake fluid pressure in a brake fluid in a hydraulic chamber. The relief port is tilted from a front side to a rear side, from the outer circumference toward an inner circumference of the piston.
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公开(公告)号：US10814850B2
公开(公告)日：2020-10-27
申请号：US16094459
申请日：2016-05-04
发明人： Jui-Lung Chang
摘要： This invention relates to a hydraulic brake device with a time difference, which utilizes an innovative brake structure to realize the time difference braking technique in which the rear wheel preferentially activates the braking action, to prevent the vehicles from slipping or spillover. Moreover, said time difference hydraulic brake device in the present invention can increase the braking force of the front wheel brake, this allows bicycles, motorcycles, electric scooters, automobiles and other vehicles to effectively improve braking performance and safety.
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公开(公告)号：US20190210578A1
公开(公告)日：2019-07-11
申请号：US16325496
申请日：2017-08-17
发明人： Mark Batchelor
IPC分类号： B60T11/20 , B60T11/21 , B60T11/224 , B60T11/228 , B60T11/232
CPC分类号： B60T11/203 , B60T11/10 , B60T11/16 , B60T11/20 , B60T11/21 , B60T11/224 , B60T11/228 , B60T11/232 , B60T2201/12
摘要： A hydraulic brake assembly (12) includes a housing (24) having first and second side-by-side bores (30), each defining a respective master cylinder assembly. Each master cylinder assembly includes a master cylinder piston (32) slidably movable by actuation of a respective brake pedal (18a, 18b) to and between an active position and an inactive position. A spool (74) slidably disposed within a piston bore (70) of the master cylinder piston (32) is operable in a first mode to direct hydraulic fluid from a quick-fill chamber (62) to a master cylinder chamber (50) at a first pressure upon initial movement of the master cylinder piston (32) from the inactive position toward the active position. The spool (74) is operable in a second mode to direct hydraulic fluid from the quick-fill chamber (62) to a tank (20) when pressure in the master cylinder chamber (50) reaches a predefined threshold.
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公开(公告)号：US09932023B2
公开(公告)日：2018-04-03
申请号：US14780750
申请日：2014-02-27
申请人： Robert Bosch GmbH
发明人： Herbert Vollert , Oliver Leibfried , Stefan Strengert, Sr. , Urs Bauer , Volkmar Schlotter , Michael Kunz , Matthias Kistner , Karl-Heinz Willmann , Matthias Schanzenbach , Suekrue Senol , Dagobert Masur
IPC分类号： B60T11/224 , B60T13/14 , B60T13/66 , B60T13/68 , B60T8/40
CPC分类号： B60T11/224 , B60T8/4081 , B60T13/143 , B60T13/662 , B60T13/686
摘要： The present invention relates to a braking device and to a braking system, each having a master brake cylinder (10) having at least one first pressure chamber (12) that is subdivided or is able to be subdivided at least into a first partial volume (12a) and a second partial volume (12b), which are hydraulically connectable or connected to a brake fluid reservoir (24), a first brake circuit (28) being hydraulically connectable or connected to the first partial volume (12a), and having a valve device (38) that is mechanically designed in such a way that a pressure buildup up to a mechanically specified limit pressure may be brought about in the second partial volume (12b), brake fluid being transferable at least into the first brake circuit (28) via at least one subcomponent (38a) of the valve device (38), and an exceeding of the limit pressure in the second partial volume (12b) being prevented.
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公开(公告)号：US09896077B2
公开(公告)日：2018-02-20
申请号：US14348842
申请日：2012-08-07
IPC分类号： B60T11/20 , B60T11/16 , B60T11/224
CPC分类号： B60T11/16 , B60T11/203 , B60T11/224 , Y10T29/49238
摘要： A master brake cylinder for a braking system of a vehicle is described, having a first pressure chamber. A first rod piston element is movable into at least a first partial pressure chamber of the first pressure chamber in such a way that a first partial residual volume of the first partial pressure chamber which is fillable with liquid is reducible by moving the first rod piston element. The master brake cylinder also includes a second partial pressure chamber of the first pressure chamber which is delimited from the first partial pressure chamber via at least one partial partition and into which a second rod piston element is movable in such a way that a second partial residual volume of the second partial pressure chamber which is fillable with liquid is reducible by moving the second rod piston element. Moreover, a manufacturing method is described for a master brake cylinder.
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公开(公告)号：US09827962B2
公开(公告)日：2017-11-28
申请号：US14423156
申请日：2013-10-17
申请人： Hiroshi Isono
发明人： Hiroshi Isono
CPC分类号： B60T11/224 , B60T7/042 , B60T11/20 , B60T11/26 , B60T13/146 , B60T13/662 , B60T13/686
摘要： A master cylinder includes: an input piston that is caused to advance by operating a brake operating member; a pressure piston that is provided coaxially with the input piston in order to increase a fluid pressure in a frontward pressure chamber while advancing; and a multistage modification device that varies a relationship between a stroke of the input piston and the fluid pressure in the pressure chamber in three or more stages while the input piston moves from a retreat end position to an advancement end position.
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公开(公告)号：US09321436B2
公开(公告)日：2016-04-26
申请号：US13581910
申请日：2011-03-29
申请人： Lothar Schiel
发明人： Lothar Schiel
CPC分类号： B60T7/042 , B60T7/107 , B60T8/17 , B60T11/224 , B60T13/148 , B60T15/00
摘要： A “brake-by wire” brake system for motor vehicles, with a brake master cylinder which can be actuated by a brake pedal and has a housing and a piston, which is arranged displaceably in the housing and, together with the housing, delimits a pressure space. The piston of the brake master cylinder is designed as a stepped piston with at least two hydraulic active surfaces A1, A2 of differing size, wherein a first, small active surface A1 is assigned to the pressure space, and a second, large active surface A2 is assigned to a filling space, and, after a closing travel has been overcome, the second, large hydraulic active surface A2 is effective and the active surface A2, A1 are switched over in dependence on a hydraulic pressure in the pressure space and on the pedal force, respectively.
摘要翻译： 一种用于机动车辆的“制动马达”制动系统，具有可由制动踏板致动并具有壳体和活塞的制动主缸，其可移动地布置在壳体中，并且与壳体一起限定 压力空间。 制动主缸的活塞被设计成具有不同尺寸的至少两个液压活动表面A1，A2的阶梯式活塞，其中第一小活动表面A1被分配给压力空间，第二大活动表面A2 被分配到填充空间，并且在关闭行程已经克服之后，第二大的液压活动表面A2是有效的，并且有效表面A2，A1根据压力空间中的液压切换，并且在 踏板力分别为
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公开(公告)号：US09211876B2
公开(公告)日：2015-12-15
申请号：US14375587
申请日：2013-03-21
发明人： Akihiko Miwa , Hiroshi Isono
CPC分类号： B60T11/103 , B60T7/042 , B60T8/17 , B60T8/4077 , B60T11/224 , B60T13/143 , B60T13/146 , B60T13/662 , B60T13/68 , B60T13/686
摘要： A vehicle brake system includes a first fluid chamber whose volume changes corresponding to the amount of advancement and retraction of the input piston, a second fluid chamber into which hydraulic pressure from a hydraulic pressure source is introduced after adjustment in a pressure regulator, a third fluid chamber kept at the atmospheric pressure, a stroke simulator which generates a reaction force to the brake operation corresponding to a change in volume of the first fluid chamber, a master cylinder, a partition member partitioning each of the second and third fluid chambers from the first fluid chamber, first and second seal members disposed in respective fitting gaps, and an annular member having both ends abutting respective seal members. The annular member divides a space into first and second space portions whose volumes respectively increases and decreases by the same amount when the annular member moves in one axial direction.
摘要翻译： 车辆制动系统包括第一流体室，其体积相应于输入活塞的前进和缩回量变化;第二流体室，在调节压力调节器之后，从液压源引入液压的压力;第三流体 保持在大气压下的行程模拟器，产生对应于第一流体室的体积变化的对制动操作的反作用力的行程模拟器，主缸，将第二和第三流体室与第一流体室分隔开的分隔构件 流体室，设置在相应的装配间隙中的第一和第二密封构件，以及环形构件，其两端邻接相应的密封构件。 当环形构件在一个轴向上移动时，环形构件将空间分成第一和第二空间部分，其容积分别增加和减少相同的量。
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公开(公告)号：US20150251643A1
公开(公告)日：2015-09-10
申请号：US14423156
申请日：2013-10-17
申请人： Hiroshi Isono
发明人： Hiroshi Isono
IPC分类号： B60T11/224 , B60T11/26
CPC分类号： B60T11/224 , B60T7/042 , B60T11/20 , B60T11/26 , B60T13/146 , B60T13/662 , B60T13/686
摘要： A master cylinder includes: an input piston that is caused to advance by operating a brake operating member; a pressure piston that is provided coaxially with the input piston in order to increase a fluid pressure in a frontward pressure chamber while advancing; and a multistage modification device that varies a relationship between a stroke of the input piston and the fluid pressure in the pressure chamber in three or more stages while the input piston moves from a retreat end position to an advancement end position.
摘要翻译： 主缸包括：输入活塞，其通过操作制动操作构件而前进; 与输入活塞同轴设置的压力活塞，以便在前进时增加前方压力室中的流体压力; 以及多级变形装置，其在输入活塞从后退端位置移动到前进位置时，以三级或更多级改变输入活塞的行程和压力室中的流体压力之间的关系。
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