105results about "Mechanically actuated brakes" patented technology

A hydrostatic rotary machine includes (i) an inner element and an outer element which are coaxial and mounted with the ability to rotate one with respect to the other about an axis of rotation, one of these elements being a rotor and the other of these elements being a stator, (ii) a brake counter-disc which is mounted on the distribution hub, which extends radially around the distribution hub, and which is rotationally coupled to the outer element, (iii) a passive-braking piston designed to activate a brake under the effect of an elastic element and which is mounted with axial mobility with respect to the brake counter-disc, and (iv) a hydraulic brake-release chamber positioned between the brake counter-disc and the passive-braking piston.

The present application belongs to the technical field of mechanical braking and provides a novel brake and a hub motor. The novel brake comprises: a brake stator, an armature, a main coil, an elastic component, N friction discs, N movable plates and assembly parts, wherein the N movable plates and the N friction discs are alternately arranged, the N-th movable plate and the N-th friction disc are adjacently arranged, the N-th friction disc abuts against a limiting step, and N is an integer larger than or equal to 1. The peripheral size of the N friction discs is larger than the peripheral size of the N movable plates, the peripheries of the N friction discs all being provided with fitting parts, and the fitting parts being configured to fit a braking part. The N friction discs and the N movable plates are all sleeved on the periphery of the brake stator, so that the total thickness of the novel brake is greatly reduced. The friction discs no longer fit a brake axle by means of a central hole, but fit the braking part by means of the fitting parts arranged on the peripheries, so that the novel brake can be applied to a wider range of application scenarios, and the sizes of the brake stator and the armature can be designed more freely, thus reducing the overall size of the novel brake.

The invention relates to a radial piston machine (10) having a multi-disc brake (57), the brake disc assembly (50) of which interacts with a first ring section (35) on a drive shaft (30) and with a second ring section (25) on a housing (20). According to the invention, the brake disc assembly (50) is arranged inside the brake chamber (58), the first and second ring sections (35; 25) each delimit a brake chamber (58) in sections, the disc section (34), the spring (53), the brake piston (54) and the brake disc assembly (50) being arranged next to one another in a specified sequence along the axis of rotation (13) such that a force of the spring (53) can be transmitted to the brake disc assembly (50).

A friction disk is provided. The friction disk includes a friction disk core, a first wear liner located over a first surface of the friction disk core, a second wear liner located over a second first surface of the friction disk core, a washer, and a rivet. The first wear liner and the second wear liner are coupled to the friction disk core via the rivet. The washer is configured to be positioned at a distal end of the rivet, such that, in response to the distal end of the rivet being upset forming an upset head, the upset head pushes against the washer thereby spreading a load of the upset head to at least one of the first wear liner or the second wear liner.

A brake device (20) comprising a first device (22); a brake element (24) having a first frictional brake surface (74a, 74b) and an engageable structure (30); a second device (26) movable relative to the first device; a second frictional brake surface (76a, 76b); a force device (40) arranged to press the first frictional brake surface and the second frictional brake surface against each other with a pressing force (50); and an actuator (28) connected to the first device, the actuator comprising an engaging structure (52) movable between a disengaged position (78) not engaging the engageable structure, and an engaged position (54) engaging the engageable structure to brake relative motion (56) between the first device and the second device; wherein a dynamic friction coefficient between the first frictional brake surface and the second frictional brake surface is less than 0.3, such as less than 0.15, or less than 0.1; and wherein the pressing force is dimensioned with respect to the dynamic friction coefficient.

A radial piston machine includes a multi-disc brake, a brake disc assembly of which interacts with a first annular section on a drive shaft and a second annular section on a housing. The brake disc assembly is disposed within a brake chamber. The first annular section and the second annular section each delimit the brake chamber in sections. A disc section, a spring, a brake piston, and the brake disc assembly are disposed next to one another in a specified sequence along an axis of rotation in such a way that a force of the spring is transmitted to the brake disc assembly.

A brake assembly (200, 1100) for a work machine (100) includes a main brake housing (202), a disc stack (204), a brake housing (214) coupled with the main brake housing (202), and a piston (216) to compress the disc stack (204). At least one of the main brake housing (202) and the piston (216) define at least two spring pockets (205). The at least two spring pockets (205) are circumferentially spaced apart from each other. The brake assembly (200, 1100) also includes at least two spring assemblies (218) disposed between the main brake housing (202) and the piston (216). The at least two spring assemblies (218) are adapted to engage the piston (216) with the disc stack (204) to apply brakes via the brake assembly (200, 1100). Each spring pocket (205) of the at least two spring pockets (205) receives a corresponding spring assembly (218) of the at least two spring assemblies (218). Each of the at least two spring assemblies (218) includes at least one Belleville spring (232).

A method for electronic air gap control of an electrical motor vehicle brake system comprises electrical wheel brakes, wherein a resting position is adopted and maintained by supplying electric energy. Mechanical elements for adjusting the resting position can thus be dispensed with. Furthermore, an electrical motor vehicle brake system comprising electrical wheel brakes for carrying out such an electronic air gap control method is described.

A brake (3) for a motor comprises: a fixed-side engaging plate (30) fixed to a motor shaft (4); a movable-side engaging plate (20) coaxially opposed to the fixed-side engaging plate (30) along the direction of a center axis (3a); and a self-holding type solenoid (10) that moves, in the direction of the center axis, the movable-side engaging plate (20) to a halt cancelation position (20A) separated from the fixed-side engaging plate (30) and a halt position (20B) where engagement with the fixed-side engaging plate (30) occurs. When the motor is halted, the solenoid (10) is driven to move the movable-side engaging plate (20) from the halt cancelation position (20A) to the halt position (20B). The movable-side engaging plate (20) which has reached the halt position (20B) is mechanically engaged with the fixed-side engaging plate (30), and the motor shaft (4) is forcibly halted.

The present invention is entitled "Electric Brake." In some examples, the present invention provides a brake assembly including an actuator assembly configured to cause translation of a piston to compress a disc stack. The actuator assembly is configured to generate a first torque about a motor axis using a motor and a second torque from the first torque using a harmonic drive. The actuator assembly can include a gear set configured to cause a linear actuator to translate the piston using the second torque. In some examples, the actuator is configured to translate the piston along a compression axis that is different from the motor axis.

Proposed is a brake assembly for braking a shaft, wherein: the brake assembly comprises • - a magnet body (9), • - an armature disk (2) and • - an electrically energizable coil winding (8); the coil winding (8) is received in the magnet body (9); the armature disk (2) is rotationally coupled to the magnet body (9) and is movable in the axial direction; a permanent magnet (10) is arranged in a recess of the magnet body (9); bolts (3) which are mutually spaced in the circumferential direction project in the axial direction through respective recesses in the magnet body (9); and the bolts (3) are connected at one end to the armature disk (2) and at the other end to a magnetic return disk (4).

Brake (1) with a device for determining a wear limit, comprising a housing (2), at least one first brake body (3), at least one second brake body (4) and a pressure piece unit (10) with a pressure piece (12) which is displaceable relative to the housing (2) in a first direction to press the at least one first brake body (3) and the at least one second brake body (4) against each other to brake, i.e. to close the brake, and is displaceable in a second direction to release the brake, i.e.to open the brake, a sensor (20) which is configured to detect a positional relationship between it and a detection surface (11) formed on the pressure piece unit (10), wherein if the brake (1) has not reached its wear limit, the positional relationship between the sensor (20) and the detection surface (11) does not change during the movement of the pressure piece (12) in the first direction, and if the brake (1) has reached its wear limit, the positional relationship between the sensor (20) and the detection surface (11) changes during the movement of the pressure piece (12) in the first direction by a relative movement between the sensor (20) and the detection surface (11).

A brake system is disclosed herein. The brake system includes a pressure plate, an end plate, a plurality of rotating discs positioned between the pressure plate and the end plate, an electromechanical brake actuator controller, and an electromechanical brake actuator including a ball screw configured to extend to exert force on the pressure plate, the electromechanical brake actuator operatively coupled to the electromechanical brake actuator controller. Responsive to receiving a command from the electromechanical brake actuator controller, the electromechanical brake actuator is configured to retract the ball screw away from the pressure plate to at least a zero-touch point.

Hydrostatic rotary machine comprising: - an internal element (1) and an external element (2) which are coaxial and mounted to rotate relative to one another about an axis of rotation (R), one of these elements being a rotor and the other of these elements being a stator; - a counter-brake disc (31) mounted on a distribution base (4), extending radially around the distribution base (4) and rotationally coupled to the external element (2); - a passive brake piston (36) designed to activate a brake (21) under the action of an elastic element (43) and mounted to be axially movable with respect to the counter-brake disc (31); - a release hydraulic chamber (50) arranged between the counter brake disc (31) and the passive brake piston (36).

The invention relates to a brake system, in particular to a brake system for braking a road vehicle and a brake system providing method. A brake system (20) for a vehicle comprises: a rotary brake element (22) fixedly connected to a wheel or an axle in common rotation with the wheel and having a plane of rotation (222); a stationary braking element (24, 26) fixedly connected with respect to the vehicle chassis so as not to rotate together with the wheels; a first brake actuator (38) configured for actuating the stationary brake element (24, 26) to urge the stationary brake element (24, 26) towards the rotary brake element (22); a second brake actuator (40) configured for actuating the stationary brake element (24, 26) to urge the stationary brake element (24, 26) towards the rotary brake element (22); a lever (32) configured such that the lever transmits a force applied by the first brake actuator (38) or the second brake actuator (40) to the fixed brake element (24, 26), where the first brake actuator (38) is connected to the lever (32) via a first connector portion (386) and the second brake actuator (40) is connected to the lever (32) via a second connector portion such that when the second brake actuator (40) is actuated, the force applied by the first brake actuator (38) or the second brake actuator (40) is transmitted to the fixed brake element (24, 26). The second brake actuator (40) is decoupled from the first brake actuator (38).

A brake device, configured to be installed directly on a driving axle or through a hub, wherein said device includes a first brake disc joined to the axle sharing rotary motion, a first container disc and a second container disc configured to be moved in the axial direction of said axle. The container discs are positioned on each side of the brake disc, such that both are configured to be moved in the axial direction towards the linings of the first brake disc and to exert a pushing pressure thereon, producing the braking of the brake disc and, therefore, of the driving axle whereon it is assembled. Furthermore, the container discs comprise an inner circuit configured to accommodate the passage of a coolant configured to cool them.

A brake for a motor includes a fixed-side engaging plate fixed to a motor shaft; a movable-side engaging plate coaxially opposed to the fixed-side engaging plate along the direction of a center axis; and a self-holding type solenoid that moves, in the direction of the center axis, the movable-side engaging plate to a halt cancelation position separated from the fixed-side engaging plate and a halt position where engagement with the fixed-side engaging plate occurs. When the motor is halted, the solenoid is driven to move the movable-side engaging plate from the halt cancelation position to the halt position. The movable-side engaging plate which has reached the halt position is mechanically engaged with the fixed-side engaging plate, and the motor shaft is forcibly halted.

A multidisc brake (1) for a motor vehicle has two multidisc devices (7, 8) and an actuating device (9) for brake-actuating and / or brake-releasing operation of the multidisc devices (7, 8) and has an electric drive (16) for the translational actuation (spreading) of the actuating device, in particular of the ramp unit (9). In the case of a spreading operation, the multidisc devices (7, 8) are preloaded in a metered manner by the actuating device and generate desired frictional engagement, and correspondingly reversed control of the actuating device allows a correspondingly metered brake release. By means of the electric drive (16), the action of the multidisc brake (1) can be metered overall in a particularly accurate, sensitive and compensated manner in modern vehicle topology taking into consideration all peripheral brake components and systems, including recuperation.

The disclosure provides a brake including a magnetic yoke iron core (10), a movable plate (20), a friction disk (30), a coil (40), an armature (50) and an elastic part (60); the magnetic yoke iron core (10) includes a first mounting space (11) and a second mounting groove (12) distributed sequentially and concentrically from inside to outside of the magnetic yoke iron core (10), the first mounting space (11) penetrating through a center position of the magnetic yoke iron core (10) in an axial direction of the magnetic yoke iron core (10), and an opening of the second mounting groove (12) facing a second shaft end of the magnetic yoke iron core (10); the movable plate (20) is located in the first mounting space (11) and close to a first shaft end of the magnetic yoke iron core (10); the friction disk (30) is arranged in the first mounting space (11) and located at a side of the movable plate (20) close to the second shaft end; the coil (40) is arranged in the second mounting groove (12); the armature (50) is located at the second shaft end of the magnetic yoke iron core (10), the armature (50) being connected with the movable plate (20) through at least one connector (80); the elastic part (60) has a pre-tightening force that enables the armature (50) to be far away from the magnetic yoke iron core (10). The thickness of the brake is relatively thin.

The invention relates to a method for electronic air gap control of an electrical motor vehicle braking system comprising electrical wheel brakes, wherein a resting position is adopted and maintained by supplying electrical energy. In this way, mechanical elements for adjusting the resting position can be advantageously done away with. The invention also relates to an electrical motor vehicle braking system comprising electrical wheel brakes for carrying out an electronic air gap control method of this type.

A wet-type friction disc (1) includes lubrication grooves and a plurality of land portions defined by the lubrication grooves. The lubrication grooves have a plurality of circumferential groove portions extending in a circumferential direction and having a predetermined groove width in a radial direction, and a plurality of intersecting groove portions extending in a direction intersecting the circumferential direction. At least some of the circumferential groove portions have a circular arc shape such that an end portion in the circumferential direction is positioned adjacent to one of the land portions in the circumferential direction, and such that the groove width is entirely contained within a range in the radial direction spanned by the one land portion.

An electromagnetic braking device includes a brake disk, a fixed disk, an armature, a biasing member for biasing the armature, and a stator for attracting the armature. In a stator magnetic circuit member, a first yoke, a permanent magnet, and a second yoke are arranged in this order from one end to the other end of a U shape. In a rotatable state or a rotation braking state, even when the coil energization is OFF, the rotatable state or the rotation braking state is maintained. When a current of a predetermined magnitude flows through the coil in a first direction in the rotatable state, the state shifts to the rotation braking state, and when a current of a predetermined magnitude flows through the coil in a second direction in the rotation braking state, the state shifts to the rotatable state.

The invention relates to a vehicle braking system with a multi-disc brake or clutch (3) comprising an actuator (21) with a pair of discs consisting of a stationary disc (25) and a rotatable disc (27) coaxially thereto, as well as at least one intermediate ball-ramp unit (23), wherein, to engage a braking function, the rotatable disc (27) rotates from a zero-position position (0) in a braking direction (D). B ) rotates, causing the ball (29) to roll between opposing ball tracks (35) of the disc pair, with axial spreading of the disc pair to apply pressure to the multi-plate brake or clutch (3), and wherein, to engage the parking function, the rotatable disc (27) rotates from the zero-rotation position (0) in a direction relative to the braking direction (D). B ) opposite parking rotation direction (D P) rotates, whereby the opposing sliding ramps (38) of the disc pair can be brought into a sliding position, with axial spreading of the disc pair in order to apply contact pressure to the multi-plate brake or clutch (3). According to the invention, the ball-ramp unit (23) has a positioning aid (42) with which the ball (29), which is out of force transmission with the disc pair when the parking function is engaged, remains backlash-free in a predefined ball position.

Hydrostatic rotation machine comprising: – an internal element (1) and an external element (2) coaxial and mounted to rotate relative to each other about an axis of rotation (R), one of these elements being a rotor and the other of these elements being a stator; – a counter-brake disc (31) which is mounted on a distribution base (4), which extends radially around the distribution base (4), and which is coupled in rotation with the external element (2); – a passive braking piston (36) adapted to activate a brake (21) under the effect of an elastic element (43), and mounted axially movable relative to the counter-brake disc (31); – a hydraulic release chamber (50) arranged between the counter-brake disc (31) and the passive braking piston (36). Figure for the abstract: Fig.1