Abstract: A motor gear unit for a disc brake apparatus includes an electric motor, a speed reduction mechanism configured to transmit rotation of the electric motor to a plurality of rotary-to-linear motion conversion mechanisms arranged in a plurality of cylinders provided in a caliper, and a housing accommodating the electric motor and the speed reduction mechanism. The speed reduction mechanism includes a plurality of final gears connected directly or via another member to the plurality of rotary-to-linear motion conversion mechanisms and a power distribution mechanism that includes one support shaft and that is configured to distribute and transmit input power to the plurality of final gears. The power distribution mechanism is supported by the housing by supporting and fixing end portions of the support shaft on axially both sides to the housing.

Abstract: A pad clip in which a circumferential dimension from a first contact portion in contact with a side surface of a coupling portion, which is disposed on the other side in the circumferential direction, on the one side in the circumferential direction in a fixing portion disposed on the other side to a side surface of a sandwiched plate portion on the one side is available to be set independently of a circumferential dimension from a first contact portion to a second contact portion in contact with the side surface of the coupling portion, which is disposed on the one side, on the other side in the fixing portion disposed on the one side. The side surface of the sandwiched plate portion is in surface contact with a torque-receiving surface regardless of bending deformation generated in a main body portion based on elastic deformation of a pressing portion.

Abstract: A method of controlling a brake system that includes a motor and an actuator. The method includes moving the actuator towards a retracted position; activating a timer; monitoring a motor characteristic of the motor and monitoring the timer; and determining the actuator has reached the retracted position after the timer meets or exceeds a predetermined time threshold before the motor characteristic has reached or exceeded a predetermined motor characteristic threshold.

Abstract: A brake system that includes a fixed brake system, a sliding brake system, and a support structure. The fixed brake system has an inboard side and an outboard side and being operable to move an inboard brake pad and/or an outboard brake pad against a brake rotor to generate a first clamping force. The sliding brake system being operable to move relative to the fixed brake system and to move the inboard brake pad and/or the outboard brake pad against the brake rotor to generate a second clamping force. The support structure providing a sliding contact between the sliding brake system and the fixed brake system during movement of the sliding brake system relative to the fixed brake while generating or releasing the second clamping force. The support structure is located in a region of the outboard side of the fixed brake system.

Abstract: A position detection device includes a position sensor including a coil and a magnetic core, and a signal processor. The signal processor generates a rectangular wave voltage applied to the coil, converts a current which flow through the coil by the rectangular wave voltage into a voltage and outputs the voltage, and acquires a voltage measurement value obtained by sampling the output voltage after predetermined time in synchronization with a timing of rising or falling of a waveform of the rectangular wave voltage. The predetermined time is set such that the voltage measurement value is restricted within a range of 40% or more and 99.999% or less with respect to a maximum value of the rectangular wave voltage when the coil is at a position where an inductance of the coil is minimum.

Abstract: A motor gear unit for a disc brake apparatus is provided. A speed reduction mechanism is connected to a first connection portion of a motor shaft of an electric motor. A non-excited operation type brake is connected to a second connection portion of the motor shaft. In a state where the disc brake apparatus is attached to a vehicle body, the motor shaft is disposed so as to be orientated in an upper-lower direction, and the non-excited operation type brake is disposed above the electric motor.

Abstract: There is provided a friction material including: a friction modifier; a binder; and a fibrous material. A phosphate-based dispersant is contained as the friction modifier. Preferably, a content of the phosphate-based dispersant is 0.2 mass % to 2.0 mass %. Preferably, the phosphate-based dispersant is at least one selected from a group consisting of sodium hexametaphosphate, sodium polyphosphate, and sodium pyrophosphate.

Abstract: A friction material including a friction modifier, a binder, and a fiber base material. A steel fiber is contained as the fiber base material. A natural graphite is contained as a lubricant. A content of copper is 0.5% by mass or less in terms of copper element. A titanate is not contained.

Abstract: There is provided a caliper for an opposed piston type disc brake including: an inner body including a pair of attachment boss portions; an outer body; and a pair of side bridges connecting, in the axial direction, end portions of the inner body on both outer sides in the circumferential direction and end portions of the outer body on both outer sides in the circumferential direction. At least one of the pair of side bridges includes a concave portion extending in the axial direction and opening to an outer surface of the side bridge, and a first beam portion and a second beam portion disposed so as to sandwich the concave portion from both sides, end portions of the respective first beam portion and the second beam portion on the inner side in the axial direction being connected to the attachment boss portions.

Abstract: A wear debris collection device includes a rotation body that is connected to a rotation shaft and performs rotating movement in accordance with rotation of the rotation shaft, a braking member that brakes the rotating movement of the rotation body, a hood covering the rotation body and the braking member and to prevent dust from entering from outside, a blower that blows air into the hood, a collection apparatus that suctions air in the hood and collects wear debris of the braking member contained in the air, and an air pressure adjuster that measures air pressure in the hood and external air pressure and adjusts an air quantity of at least one of the blower and the collection apparatus so that the air pressure in the hood equals the external air pressure.

Abstract: A sintered friction material includes a copper component in an amount of 0.5% by mass or less, a titanate as a matrix, a ceramic material, and a lubricant. A method for manufacturing a sintered friction material includes a step of mixing raw materials including a titanate for forming a matrix, a step of molding the raw materials, and a step of sintering a molded body molded in the molding step. In the method, a sintering temperature in the sintering step is 900° C. to 1300° C.

Abstract: A floating disc brake includes a yoke supported to the support in an axially movable manner, the yoke including a pad support portion that supports an outer pad on an axially outer side of the outer pad. The outer pad includes, on its axially outer surface, a pair of pad-side engagement portions formed of an elastic material. The pad support portion has a support hole that is open on at least an axially inner surface of the pad support portion, and the support hole is provided with a pair of yoke-side engagement portions on inner side surfaces of the support hole that face each other in a circumferential direction. The pair of pad-side engagement portions and the pair of yoke-side engagement portions are concavo-convex engaged with each other in the circumferential direction.

Abstract: An object of the present invention is to provide a friction material for disc brake that can prevent occurrence of a rust adhesion phenomenon and has stable friction characteristics even after being left in a low temperature and high humidity environment. The present invention relates to a friction material for disc brake, containing: a wax containing, as a main component, an ester of a higher fatty acid and a higher alcohol.

Abstract: A brake system that includes a brake caliper, a motor, and a torque distributing assembly configured to distribute torque from the motor to a first brake piston and/or to a second brake piston. The torque distributing assembly includes a gear set that includes gears that are configured to rotate about an axis. One of the first brake piston and the second brake piston is configured to move along the same axis during a brake apply or a brake release.

Abstract: A caliper for an opposed-piston disc brake, includes a pair of bodies provided at two sides of a rotor that rotates with a wheel, each of the bodies including five cylinders. A central cylinder among the five cylinders provided on each of the bodies, which is surrounded by four of the cylinders, has a center which is located in a region on a radially inner side relative to an outer reference circle and on a radially outer side relative to an inner reference line. The outer reference circle passes through a center of a cylinder provided on a radially outermost side among the four of the cylinders and has a center thereof on a center of the rotor. The inner reference line passes through centers of two of the cylinders provided on a radially inner side among the four of the cylinders.

Abstract: A disc brake pad which is supported by a pair of pins to a pad support member so that the disc brake pad is movable in an axial direction, include a lining and a back plate supporting a back surface of the lining. The back plate includes a clip insertion portion where part of a pad clip is inserted in the axial direction, at an intermediate portion of a radially outer side portion in a circumferential direction, includes pin insertion portions where the pins are respectively inserted in the axial direction, at both sides of the radially outer side portion in the circumferential direction with the clip insertion portion located therebetween. The clip insertion portion includes, on a radially outer side portion of an inner peripheral surface thereof, a pressed surface where a pressing force directed radially outward is applied from the pad clip.

Abstract: A disc brake device in which a moment acts on a pad in a direction in which a rotation-in side portion is pushed up toward a radially outer side during braking, including the pad including a pin insertion portion and a clip insertion portion, a pad support member, including a pin inserted into the pin insertion portion in an axial direction, and supporting the pad so that the pad is movable in the axial direction, and a pad clip, including a pad pressing portion inserted into the clip insertion portion in the axial direction, and configured to press the pad radially outward. The pad clip is configured to apply a pressing force to the pad so that a radially inner side portion of an inner peripheral surface of the pin insertion portion is pressed against a radially inner side portion of the pin.

Abstract: A friction material includes a friction modifier, a binder, and a fibrous material. An alkali metal salt of phosphoric acid and a metal sulfide are contained as the friction modifier. The alkali metal salt of phosphoric acid may include trisodium phosphate. A wax containing, as a main component, an ester of a higher fatty acid and a higher alcohol may be contained as the friction modifier.

Abstract: A brake assembly comprising: (a) a caliper including: (i) one or more pistons, (b) one or more rotary to linear actuators that provides an axial force to move the one or more pistons, (c) a motor gear unit in communication with the one or more rotary to linear actuators, the motor gear unit including: (i) a motor, and (ii) an electromagnetic brake that prevents movement of the motor gear unit, the pistons, or both when the motor is turned off so that the brake apply is maintained.

Abstract: A sintered friction material, in which a content of a copper component is 0.5 mass % or less, is provided. The sintered friction material includes a titanate and a metal material other than copper, as a matrix. A content of the metal material other than copper is 10.0 volume % to 34.0 volume %. A method for manufacturing a sintered friction material is provided. The method includes a mixing step of mixing raw materials containing a titanate and a metal material other than copper, a molding step of molding the raw materials mixed in the mixing step, and a sintering step of sintering, at 900° C. to 1300° C., a molded product molded in the molding step. In the sintered friction material, the titanate and the metal material other than copper form a matrix, and a content of the metal material other than copper is 10.0 volume % to 34.0 volume %.