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公开(公告)号：US12084013B2
公开(公告)日：2024-09-10
申请号：US17594496
申请日：2019-05-16
CPC分类号： B60T13/683 , B60T13/662 , B60T17/083
摘要： A control method for controlling a spring loaded brake actuator (9) comprising a first chamber (Ch1) to receive a parking brake pressure (PBR) acting against a main spring (92), and a second chamber (Ch2) to receive a service brake pressure (SB) for applying a service brake force, the method comprising a circumstantial selection of one control law among a set of control laws comprising two or more compound control laws: —where the first compound control law (CL1), known as anti-compound mode, is such the service brake pressure (SB) is electronically controlled such that the resulting total braking force (F) does not exceed a first upper limit (UL1) corresponding to the force of the main spring (92) when the parking brake pressure (PBR) is substantially null, —where the second compound control law (CL2), known as controlled-compound mode, is such that the service brake pressure (SB) is electronically controlled such that the resulting total braking force (F) does not exceed a second upper limit (UL2) higher than the first upper limit.
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公开(公告)号：US11951958B2
公开(公告)日：2024-04-09
申请号：US17611507
申请日：2019-05-16
发明人： Filip Flisek , Waldemar Talko
CPC分类号： B60T17/083 , B60T17/086
摘要： A piston tube assembly (17) for a spring brake actuator (1) includes a first tubular body (35) having a contoured inside surface profile (55) for non-rotationally guiding a running nut (21) of a mechanical release mechanism (19, 21), and an internal breather valve (41) mounted to the piston tube assembly (17) for allowing fluid transport into and out of the piston tube assembly and any volume in fluid communication therewith. The piston tube assembly (17) includes a second tubular body (37) that is of a different material than the first tubular body (35), which encloses the first tubular body (35) and mechanically supports the first tubular body (35), and the internal breather valve (41) is mounted to the first tubular body (35).
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公开(公告)号：US20240109524A1
公开(公告)日：2024-04-04
申请号：US18537440
申请日：2023-12-12
CPC分类号： B60T13/683 , B60T8/3605 , B60T13/385 , B60T17/083
摘要： An electropneumatic valve assembly is for activating a parking brake function of an electropneumatic brake system. The valve assembly has a pilot control unit and a main valve unit configured to actuate a parking brake pressure at least at one spring-accumulator connection. The valve assembly has a service brake connection for receiving a service brake pressure and a safety valve. The safety valve, by receiving a safety control pressure, is switchable from a venting position, in which the safety valve connects the pilot control unit to a vent, to a supply position, in which the safety valve supplies the pilot control valve with reservoir pressure, the safety valve remaining in the supply position or switching to the venting position as a function of an actuated pressure. The service brake connection is connected to the safety valve control connection.
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公开(公告)号：US11745716B2
公开(公告)日：2023-09-05
申请号：US17130383
申请日：2020-12-22
发明人： Will E. Roberts
IPC分类号： B60T17/08
CPC分类号： B60T17/083 , B60T17/085 , B60T17/088
摘要： An interface between an adapter push rod and a parking brake diaphragm seal includes an axial projection at one end of the push rod, a thread extending axially between a free end of the projection and a remainder of the push rod, and a washer having an approximately conical wall extending radially inwardly from an outer circumference of the washer towards a central mounting connection having a radial flange. A nut is threaded over the free end of the projection, and an opening in a hardened element is aligned axially with the projection to receive the projection. A circumferential groove defined in a side of the radial flange forms a boundary between the approximately conical wall and a remainder of the washer, and a portion of the diaphragm seal is pressed by the nut and the hardened element into the circumferential groove to produce a sealing bead.
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公开(公告)号：US20230265936A1
公开(公告)日：2023-08-24
申请号：US18113293
申请日：2023-02-23
发明人： Laszlo KONCZ , Tibor NAGY , Gabor FARKAS , Sushant PATIL , Shivram BANE
CPC分类号： F16K31/003 , F16K31/426 , B60T13/683 , B60T15/027 , B60T17/083
摘要： A valve arrangement for use in a parking brake system of a commercial vehicle or trailer, includes a differential piston having a first section and a second section, wherein the second section has a smaller diameter compared to the first section, and wherein there is a fluidic connection between the first section and the second section. The arrangement includes a housing with a bore, in which the differential piston is adapted to move. The bore has at least two sections, wherein the first section corresponds to the diameter of the first section of the differential piston, and the second section corresponds to the diameter of the second section of the differential piston, and wherein a step is formed between the first section and second section of the bore. A first passage and a second passage are arranged and axially spaced in the bore, and a third passage is arranged in or next to the second section of the bore. When the differential piston is in a first end position, the second section of the differential piston rests against the step, and a connection of the first passage and the second passage within the bore is provided. When the differential piston is in a second end position, a connection of the first passage and the second passage within the bore is blocked.
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6.发明申请公开(公告)号：US20180290641A1
公开(公告)日：2018-10-11
申请号：US15921963
申请日：2018-03-15
申请人： AUDI AG
发明人： Tobias Brok , Herbert Ernst
CPC分类号： B60T15/028 , B60T8/267 , B60T8/306 , B60T8/348 , B60T8/404 , B60T8/4072 , B60T8/4081 , B60T13/588 , B60T13/662 , B60T17/083 , F15B2201/31
摘要： A brake system for a motor vehicle has at least a first wheel brake and at least a second wheel brake. A first inlet valve is fluidically connected, on the one hand, to the first wheel brake, and, on the other hand, to a brake pressure source, and a second inlet valve is fluidically connected, on the one hand, to the second wheel brake, and, on the other hand, to the brake pressure source. In this case, a switching valve is provided, which fluidically connects the one fluid outlet of the second inlet valve in a first switching position to the second wheel brake and in a second switching position to the first wheel brake.
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公开(公告)号：US10059322B2
公开(公告)日：2018-08-28
申请号：US15331365
申请日：2016-10-21
申请人： TSE Brakes, Inc.
发明人： Carl Gaufin , Will Brandon Drake
CPC分类号： B60T17/221 , B60T17/083 , B60T17/22
摘要： Spring failure detection systems include an air brake cylinder having a spring axially extending therein, a sensor coupled to the air brake cylinder and configured to sense forces applied to the air brake cylinder, an indicator coupled to the sensor and configured to indicate failure of the spring based on the forces sensed by the sensor, and a controller in communication with the sensor and configured to control the indicator. Methods for detecting failure of a spring are also disclosed.
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公开(公告)号：US09988034B2
公开(公告)日：2018-06-05
申请号：US15193763
申请日：2016-06-27
发明人： Stephane Hericher
IPC分类号： B60T17/08 , F16D65/28 , F16D121/12 , F16D123/00 , F16D127/04 , F16D125/06
CPC分类号： B60T17/086 , B60T17/083 , B60T2270/403 , F16D65/28 , F16D2121/12 , F16D2123/00 , F16D2125/06 , F16D2127/04
摘要： A pneumatic spring brake cylinder is provided for brake systems of vehicles, including a housing in which a spring brake piston loaded by an accumulator spring and connected to a spring brake piston tube is guided in a movable manner, and an emergency release device for the emergency release of the spring brake piston in the event of a drop in pressure. The emergency release device contains a spindle which can be rotated relative to the spring brake cylinder and which can be screwed in a nut that is held in a rotationally fixed manner in the spring brake piston tube by a form-fitting connection. The nut interacts with an axial stop on the spring brake piston in order to trigger a release movement against the effect of the accumulator spring. The formfitting connection is formed between an outer polygonal profiled section of the outer circumference of the nut in a circumferential direction and a complementary circumferential inner polygonal profiled section on the inner circumference of an intermediate bushing and between an outer polygonal profiled section of the outer circumference of the intermediate bushing in the circumferential direction and a complementary circumferential inner polygonal profiled section on the inner circumference of the spring brake piston tube.
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公开(公告)号：US09969377B2
公开(公告)日：2018-05-15
申请号：US15113440
申请日：2014-08-11
IPC分类号： B60T17/08 , F16D65/28 , F16D125/08 , F16D125/12 , F16D125/58
CPC分类号： B60T17/083 , F16D65/28 , F16D2125/08 , F16D2125/12 , F16D2125/582
摘要： This invention is related to improving the sealing of the adapter plate inside the spring brake actuator and to improving the bearing of the intermediate shaft and the adapter plate. The invention is related to a new design regarding the bearing section providing sealing between the intermediate shaft and the adapter plate, which is a part of the spring brake actuator. The present invention is related to the development of two pieced bearing member having different hardness and being produced from different materials one of which is a rigid plastic piece which prevents force losses and decreases lateral loads, and the other of which is the rubber means.
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公开(公告)号：US09889865B2
公开(公告)日：2018-02-13
申请号：US14908186
申请日：2014-08-05
申请人： NABTESCO CORPORATION
发明人： Yoshio Asano , Hideyuki Oie
IPC分类号： F16D65/28 , B61H5/00 , F16D55/224 , B61H13/00 , F16D55/2255 , F16D65/18 , F16D65/40 , B60T17/08 , F16D65/56 , F16D123/00 , F16D125/66 , F16D121/06 , F16D127/06
CPC分类号： B61H5/00 , B60T17/083 , B61H13/00 , B61H13/005 , F16D55/2245 , F16D55/2255 , F16D65/18 , F16D65/40 , F16D65/56 , F16D2121/06 , F16D2123/00 , F16D2125/66 , F16D2127/06
摘要： The present disclosure increases the braking force of a parking spring brake mechanism without enlarging a device and without substantial increase in cost. The subject of the present disclosure is a brake cylinder device provided with a parking spring brake mechanism wherein a first piston moves in a prescribed braking direction. The brake cylinder device is provided with a brake force transmitting section having an inclined surface 38 that is inclined so as to press a brake output section in an advancement direction by moving along with the first piston in the braking direction. The inclined surface includes a first inclined surface provided in a distal end portion, and a second inclined surface provided in a proximal end portion and inclined more than the first inclined surface with respect to the advancement direction.
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