Abstract: In order to provide a method and a device for determining a tire type of a running tire from a vehicle side, when determining the tire type, which is the type of the tire, from an output of an acceleration sensor attached to an inner surface side of a tire tread of the tire mounted on a vehicle, a feature vector is extracted from an acceleration waveform detected from the output of the acceleration sensor, and the tire type of the tire is determined, by a machine learning algorithm, from the extracted feature vector. The tire type is determined on the basis of the extracted feature vector and a determination model in which a feature vector obtained in advance for each tire type has been configured as learning data.

Abstract: A fitting structure between a functional component accommodation case and a rubber base, the functional component accommodation case being configured to accommodate a functional component that detects a state of a tire, and the rubber base being configured to be attached to an inner surface of the tire so as to mount the functional component accommodation case. The fitting structure includes plural case-side convex/concave parts that are formed on a case bottom surface which is a surface on a tire inner surface side of the functional component accommodation case and that extend in mutually intersecting directions, and plural base-side convex/concave parts that are formed on a functional component accommodation case side of a base bottom part, which is an attachment part to be attached to the tire, of the rubber base and that fit with the case-side convex/concave parts.

Abstract: A flexible coupling 10 is constituted such that a drive-side plate 11 and an intermediate plate 13 are interconnected by first connection members 14A to 14D having a rubber member in such a manner that they can move in a direction perpendicular to a direction for interconnecting pin members 15a and 15b for mounting the above first connection members 14A to 14B, and the intermediate plate 13 and a driven-side plate 12 are interconnected by second connection members 16A to 16D having the same constitution as the above first connection members 14A to 14D and arranged perpendicular to the above first connection members 14A to 14D in such a manner that they can move in a direction perpendicular to the above direction. Torque on the drive side can be transmitted to the driven side efficiently with simple constitution and the flexible coupling can be easily mounted.

Abstract: A vehicle wheel 1 having a plurality of subsidiary air chambers 3, which is annularly incorporated on a rim outer peripheral surface 4, a cover member 13 having a lug part extended over the entire periphery and a stepped part extended over its periphery along the inside of the lug part 16, and a bottom plate member 14 being superimposed with each other through a seal member made of an elastic member and interposed therebetween in an airtight manner, and the cover member 13 and the rim outer peripheral surface 4 being joined to each other in a joint part 10, wherein the cover member 13 and the rim outer peripheral surface 4 are made into contact with each other so as to form a subsidiary air chamber 3 having air-tightness.

Abstract: Since a flexible coupling 10 is constituted such that a drive-side plate 11 and an intermediate plate 13 are interconnected by first connection members 14A to 14D having a rubber member in such a manner that they can move in a direction perpendicular to a direction for interconnecting pin members 15a and 15b for mounting the above first connection members 14A to 14B, and the intermediate plate 13 and a driven-side plate 12 are interconnected by second connection members 16A to 16D having the same constitution as the above first connection members 14A to 14D and arranged perpendicular to the above first connection members 14A to 14D in such a manner that they can move in a direction perpendicular to the above direction, torque on the drive side can be transmitted to the driven side efficiently with simple constitution and the flexible coupling can be easily mounted.

Abstract: A torsion beam type suspension device comprises a pair of trailing arms (1) spaced from each other axially of an axle and connected at front ends thereof to a car body and at rear ends thereof rotatably supporting wheels through brackets, and a torsion beam (2) extending axially of the axle and interconnecting the pair of trailing arms (1) by connecting portions (6) at both ends, the rear ends of the pair of trailing arms (1) being connected to the brackets (8) through rubber cushions, whereby the steering stability can be improved without raising problems about cost, weight and space or without impairing NVH performance associated with road noise, trembling feeling and harshness.

Abstract: A torsion beam type suspension device comprises a pair of trailing arms (1) spaced from each other axially of an axle and connected at front ends thereof to a car body and at rear ends thereof rotatably supporting wheels through brackets, and a torsion beam (2) extending axially of the axle and interconnecting the pair of trailing arms (1) by connecting portions (6) at both ends, the rear ends of the pair of trailing arms (1) being connected to the brackets (8) through rubber cushions, whereby the steering stability can be improved without raising problems about cost, weight and space or without impairing NVH performance associated with road noise, trembling feeling and harshness.

Abstract: A low-cost, low-noise pavement is realized by a waste-rubber-containing elastic pavement material which includes waste rubber resulting from waste spent-tires and the like, a binder and an aggregate while a pavement after application has a coefficient of restitution to a golf ball of 20 to 60. An urethane-based or epoxy-based curable resin is suitable for use as the binder. Preferably, the contents of the waste rubber and the binder are 30% to 70% by volume and 10% to 30% by volume respectively.

Abstract: A device using an electrorheological fluid filled in a fluid enclosing space comprises passages or fins for cooling the electrorheological fluid disposed around the fluid enclosing space and is useful for a vibration damper, a clutch, an engine mount, a shock absorber and the like. The power consumption can be maintained at a sufficiently low level and thermal runaway of electric current can effectively be prevented.

Abstract: A vibration damping device comprises two cylindrical and flexible membrane members liquid-tightly connected at its end portion to respective end portion of a piston member and at its other end portions to respective face plates, a connecting member connecting the face plates to each other to form a closed chamber, a liquid filled in the closed chamber, and fastening members arranged onto the piston member and face plate, respectively. Moreover, at least one restricted passage is formed in the piston member or the connecting member. When an electrorheological fluid is used as a liquid, electrodes are arranged on opposed walls of the restricted passage.

Abstract: A vibration damping device comprises two cylindrical and flexible membrane members liquid-tightly connected at its end portion to respective end portion of a piston member and at its other end portions to respective face plates, a connecting member connecting the face plates to each other to form a closed chamber, a liquid filled in the closed chamber, and fastening members arranged onto the piston member and face plate, respectively. Moreover, at least one restricted passage is formed in the piston member or the connecting member. When an electrorheological fluid is used as a liquid, electrodes are arranged on opposed walls of the restricted passage.

Abstract: In order to develop sufficient vibration damping performance and effectively prevent transmission of goading vibrations and others in a vibration damping device using an electrorheological fluid, if the moving directions of vibration input side member and vibration output side member of the device are opposite to each other, a voltage applied to electrodes in the device is increased to increase the viscosity of the electrorheological fluid, while if absolute value of vibration acceleration velocity in the vibration input side member exceeds a given value, a voltage applied to the electrodes is always decreased to decrease the viscosity of the fluid.

Abstract: A restricted passage system is used in a vibration damping device, and comprises at least three cylindrical members concentrically arranged from each other at an interval and alternately serving as positive and negative electrodes and having a hole per each member in a position opposite to each other in diameter direction and insulation members fixed to upper and lower end portions of these members.