Abstract: By rotating a regulating bolt about an axis thereof to move forward/backward with respect to a protrusion portion, a lever is rotated about a shaft portion of an adjusting member. Therefore, the shaft portion of an adjusting member is rotated together with the lever to adjust a gap formed between a disk and a piston. After the gap is adjusted, the regulating bolt is fastened owing to a lock nut and a screw hole of the protrusion portion to thereby fix an forward/backward position of the regulating bolt with respect to the protrusion portion. In addition, a fixing bolt is screwed into a screw hole of a second housing portion to thereby fix a rotational position of the lever. Accordingly, the rotational position of the lever is double-locked.

Abstract: In a friction material, columnar or scaly non-whisker-like alkali metal titanate or non-whisker-like alkali metal•alkaline-earth metal titanate having an average particle diameter in the range of 0.1 to 100 ?m and an aspect ratio of 3 or less and an inorganic porous filler are compounded, and a friction material in which non-whisker-like lithium.potassium titanate having an average particle diameter in the range of 0.1 to 100 ?m and an aspect ratio of 3 or less is compounded.

Abstract: The error of a sensor in motion capture system is corrected. An acceleration sensor determines the direction of gravity (G1) in a still initial state. The direction G1 will never change always if a drift dose not occur. However, actually if an object to which an acceleration sensor is attached moves along a coordinate axis, the direction gradually changes due to a drift with time. According to the invention, after a given time has passed, the acceleration sensor is stopped to determine the direction of gravity. Referring to the data on this determination, the true direction of gravity to be judged is compared with the direction of gravity G1 influenced by the drift. The difference between them is assumed to be an error due to a drift, and the error is subtracted from the determined value to correct the error of the measurement value.

Abstract: A brake apparatus having an automatic clearance adjusting mechanism with an overadjustment preventer constituted such that a piston is constituted by a structure of being divided in a plug piston 16 and a ring piston 14. The plug piston 16 is integrated with an adjusting nut 20, a bearing 21, a bearing support plate 22 and a spring holder 23. An outer side claw portion 23a of the holder is locked by an outer side groove 16 of the plug piston. The plug piston 16 integrated with the respective parts is inserted to fit to the ring piston 14 to thereby prevent the outer side claw portion 23a of the holder from being detached.

Abstract: A pad clip 12 is provided between a backing plate 6 and an engaging portion 4 of a support member 1 to prevent rattling of the backing plate 6 during non-braking period and generation of hitting sound during braking period. In order to restrain the hitting sound, the backing plate 6 is resiliently pressed in the rotational direction of the rotor by a pressing portion 14b and a second abutting portion 24. The above-described problem can be solved by increasing the force to press the backing plate 6 and reducing the possibility that a torque transmitting surface 16 on the backing plate 6 and a torque receiving surface 17 on the support member 1 hit against each other with great force is during braking period reduced correspondingly.

Abstract: An object of the invention is to provide a brake apparatus which can facilitate slope starting and slope climbing and which can be produced small in size and light in weight. In addition, another object of the invention is to provide a brake apparatus which can obtain a stable brake force under any conditions including running in the rain. The invention provides a brake apparatus in which a restriction is imposed on the rotation of a wheel (101) via a brake drum (3) provided on a rotational shaft of the wheel (101) so as to rotate together with the rotational shaft, the brake apparatus being characterized by comprising a brake shoe (30) for imposing a restriction on the rotation of the brake drum (3) in a forward or backward direction through wedge engagement with an inner circumferential surface of the brake drum (3) when the brake drum (3) rotates either in the forward direction or in the backward.

Abstract: An automatic clearance adjusting device 10 that automatically adjusts the position of brake shoes (3, 4) based on the wear includes an adjuster gear that is rotatably depending on the amount of how much the brake shoes are parted from each other, a cam plate (25) rotated integrally with the adjuster gear (23) to drive the strut (27) that restricts the position of the brake shoes (3, 4), and an adjuster restricting lever (33) that restricts the rotation of the adjuster gear (23) based on the pressing force from the wheel cylinder (6) that parts between the pair of brake shoes (3, 4).

Abstract: In a drum brake device having a shoe drive cam, the braking force of which is mechanically controlled according to a reaction force acting on an anchor pin by a brake shoe, the cam plate 76 pivotally supported by the anchor pin 10 and the lever plate 30, to which a shoe operating force is given by the operating force generating means 6, are connected to each other being capable of rotating relatively via a pair of cam pins 21, 23 coming into contact with the brake shoes 3, 4, and the transmitting mechanism of the input system composed of the lever plate 30 and the pair of cam pins 21, 23 and the transmitting mechanism of the control system composed of the pair of cam pins 21, 23 and the cam plate 76 are put into a separate state in which a direct power transmission is not conducted between them.

Abstract: An object of the present invention is to provide a floating caliper type disc brake which can effectively suppress the occurrence of uneven wear in linings of respective pads, and effectively suppress the occurrence of noise and judder during braking. In the present invention, a caliper is supported by a support member displaceably in an axial direction of a rotor. Pressed-side shim plates are respectively lined on reverse surfaces of back plates of pads supported by the support, while supporting-side shim plates are lined on an inner side surface of a claw portion and on a distal end face of a piston. The pressed-side shim plates and the pressing-side shim plates are respectively retained by mating members to be lined on by means of resilient retainers, and one surface of each of the mutually opposing pressed-side shim plates and one surface of each of the pressing-side shim plates are slidably abutted against each other.

Abstract: A ball ramp mechanism constituting a force transmission converting mechanism is inserted into a cylinder of a caliper body and a relative rotation angle thereof is restricted to a predetermined range. Further, by successively assembling a piston head, a ramp plate and a ball and a screw shaft member constituting the ball ramp mechanism, a coil spring and an end plate in this order and by catching the end plate by a slit of a piston case in a state of flexing the coil spring, respective parts are elastically connected and assembled by the spring.

Abstract: An electric parking brake mechanism characterized in an electric parking brake for pressing a friction member to a braked member via a force transmission converting mechanism for converting a rotational movement of an electric motor to a linear movement, including an input shaft connected to a side of the electric motor, an output shaft connected to a side of a brake mechanism for pressing the friction member to the brake member and a cam mechanism interposed between the input shaft and the output shaft, the cam mechanism is provided with a plurality of cam members and each having a cam face having a radius gradually increasing relative to a rotational center and in driving only a side of the output shaft, rotation of the output shaft is hampered by operating all of the plurality of cam members to constitute sides of large diameters.

Abstract: A sine wave electric signal whose frequency continuously varies within a predetermined frequency range is applied to a piezoelectric speaker, whereby a vibration frequency characteristic of the piezoelectric speaker is detected. A change of the frequency characteristic of the piezoelectric speaker when the piezoelectric speaker is brought into contact with concrete filled into a precast concrete form is detected based on the vibration frequency characteristic detected. With this unique feature, a filling status of concrete in the precast concrete form can exactly be detected independently of the hardness of water contained in the concrete and ambient temperature, and even if a temperature difference between air and the concrete is small.

Abstract: In a drum brake device having a shoe drive cam, the braking force of which is mechanically controlled according to a reaction force acting on an anchor pin by a brake shoe, the cam plate 76 pivotally supported by the anchor pin 10 and the lever plate 30, to which a shoe operating force is given by the operating force generating means 6, are connected to each other being capable of rotating relatively via a pair of cam pins 21, 23 coming into contact with the brake shoes 3, 4, and the transmitting mechanism of the input system composed of the lever plate 30 and the pair of cam pins 21, 23 and the transmitting mechanism of the control system composed of the pair of cam pins 21, 23 and the cam plate 76 are put into a separate state in which a direct power transmission is not conducted between them.

Abstract: A cam mechanism 7 provided as a shoe drive mechanism includes a cam supporting plate 21 being loosely and rotatably fitted on an anchor pin 10 for receiving a shoe operating force, a first cam plate 23 rotatably connected to the cam supporting plate 21 at an outer cam supporting position which is a position shifted away from the anchor pin 10 radially outwardly of the drum, a second cam plate 25 rotatably connected to the cam supporting plate 21 at an inner cam supporting position which is away from the anchor pin 10 toward the operating force generating means 6, so that a pair of brake shoes 3, 4 are opened outwardly by the separate cam plates 23, 25, respectively.

Abstract: An actuator 23d for pushing a plurality of friction plates 44, 44 to a plurality of plates 37, 37 to be braked is composed of members including electroactive polymer, the shape of the elastomer of which is changed by electric energy.

Abstract: A ball ramp mechanism constituting a force transmission converting mechanism is inserted into a cylinder of a caliper body and a relative rotation angle thereof is restricted to a predetermined range. Further, by successively assembling a piston head, a ramp plate and a ball and a screw shaft member constituting the ball ramp mechanism, a coil spring and an end plate in this order and by catching the end plate by a slit of a piston case in a state of flexing the coil spring, respective parts are elastically connected and assembled by the spring.