62results about How to "Steering stability" patented technology

The present invention aims to improve the wet performance while securing steering stability and holding down degradations in noise performance to minimum, and for this purpose, a pneumatic tire in which blocks are disposed at intervals at a tread portion thereof is arranged in that concave blocks with stepped concave portions that extend along block side edges, which face circumferential main grooves, and having a depth from a block top surface that corresponds to 20 to 70% of a block height are provided. The concave portions have a length in a tire circumferential direction of 40 to 95% of a length of the block side edges in the tire circumferential direction and a width in a tire axial direction of 2 to 20 mm.

A pneumatic tire comprising a plurality of wishbone shaped patterns, each comprising a first substantially inclined circumferential groove and a second substantially inclined circumferential groove; and a plurality of curved, substantially lateral grooves, wherein each first substantially inclined circumferential groove and each second substantially inclined circumferential groove is intersected by at least one substantially lateral groove, and each of the inclined circumferential and lateral grooves is perpendicular with the turning axis of the tire.

The present invention aims to improve the wet performance while securing steering stability and holding down degradations in noise performance to minimum, and for this purpose, a pneumatic tire in which blocks are disposed at intervals at a tread portion thereof is arranged in that concave blocks with stepped concave portions that extend along block side edges, which face circumferential main grooves, and having a depth from a block top surface that corresponds to 20 to 70% of a block height are provided. The concave portions have a length in a tire circumferential direction of 40 to 95% of a length of the block side edges in the tire circumferential direction and a width in a tire axial direction of 2 to 20 mm.

In a high-frequency mode (a small-amplitude mode), a shock absorber opens a guide member to reduce a damping force. In a low-frequency mode (a large-amplitude mode), the shock absorber prevents the guide member from being opened by increasing a pressure of a second pressure chamber formed between a second piston (lower piston) and a pilot valve through a groove (passage) formed in an outer periphery of a piston rod. A main damping force is generated through the second pressure chamber and a disk valve assembly. Therefore, it is possible to provide a round ride comfort having a damping feeling and ensure a steering stability through a linear vehicle control.

A tire has a tread rubber and a conductive portion. The conductive portion is formed so as to connect the ground surface and a side surface of a side end portion of the tread rubber in a tire meridian circle cross section. The conductive portion having a rubber hardness which is different from the tread rubber, and has a stem portion and a plurality of branch portions. The stem portion heads for an inner side in the tire width direction from the side surface of the side end portion of the tread rubber so as to terminate at an inner portion of the tread rubber. The plurality of branch portions are branched from a plurality of positions of the stem portion so as to head for an outer side in the tire width direction and be exposed to an outer surface of the tire.

A pneumatic tire has a tread rubber provided in an outer side of a carcass layer in a tread portion. the tread rubber has a cap portion which is formed by a non-conductive rubber and constructs a ground-contacting surface, a base portion which is provided in an inner side in the tire diametrical direction of the cap portion, and a conductive portion which is formed by a conductive rubber and extends in a thickness direction of the tread rubber so as to reach a bottom surface of the tread rubber from the ground-contacting surface. A thickness of the conductive portion is made relatively large in a center portion in the thickness direction of the tread rubber, and the thickness of the conductive portion is made relatively small in both end portions in the thickness direction of the tread rubber.

A pneumatic tire with improved steering stability without raising air columnar resonance noise level is provided. The pneumatic tire comprises upper thin grooves 11a extending from a branch point 21 in the depth direction of a main groove on the tread surface side and a plurality of lower thin grooves 11b extending from the branch point 21 in the depth direction of the main groove on the groove bottom side, which are formed at intervals along the tire circumferential direction R in a sidewall of the main groove and a distance B from the groove bottom of the main groove 1 to the branch point 21 is 30 to 60% of the depth D of the main groove 1.

Provided is a pneumatic tire 1 on which mediate land portions 23a, 23a are formed. Sipes 24 are formed in the mediate land portions 23a, 23b respectively. The mediate land portion 23a disposed inside in a vehicle width direction in a state where the pneumatic tire 1 is mounted on a vehicle has larger sipe density and projects more outwardly in a tire radial direction than the mediate land portion 23b disposed outside in the vehicle width direction in a state where the pneumatic tire 1 is mounted on the vehicle.

A tire comprises a tread portion 2. The tread portion 2 includes a tread ground contacting surface (2s) and at least one main groove 3 recessed from the tread ground contacting surface (2s) and extending continuously in a tire circumferential direction. The main groove 3 has a first groove wall 11. The first groove wall is provided with a recessed portion 15 recessed outwardly in a groove width direction from a groove edge of the main groove 3 on the tread ground contacting surface. The recessed portion 15 is formed of groove wall rubber 8 having a complex elastic modulus larger than that of base rubber 7 forming a main portion of the tread ground contacting surface (2s).

A tread pattern of a pneumatic tire includes one center continuous land portion and two intermediate continuous land portions that are divided by four circumferential main grooves and that are not provided with lug grooves. Edges on both sides of one center main groove include groove chamfered portions having a chamfered width changing in the circumferential direction in a zigzag shape. In the regions of the intermediate continuous land portions, first sipes extending inward in the lateral direction from shoulder main grooves of the main grooves, which are positioned on outer sides in the lateral direction, are provided. The first sipes each include a sipe main body portion having a constant distance between sipe wall surfaces on a sipe bottom side and a sipe chamfered portion inclined so that the sipe wall surfaces are open toward the tread surface.

The invention relates to a cloth boundary recognition method for a sewing machine and a sensor and an identification device thereof, and belongs to the technical field of intelligent automatic sewingrobot control. A red light LDE light source is converted into a linear light source through a multiple layers of lens, the linear light source is reflected by a reflector to a lens group to be concentrated to form a point-distance linear beam, the point-distance linear beam is irradiated on a linear CCD sensor to form analog voltage output of a dot array, and the cloth boundary recognition sensoris constituted. The analog voltage of the dot array outputted by the cloth boundary recognition sensor is directly sent to an AD port of a MCU for calculation processing, and a digital quantity is transmitted outward through a communication circuit to constitute the cloth boundary identification device of the sewing machine. The cloth boundary recognition sensor adopts a linear CCD photosensitivechip, and the recognition precision is greatly improved; the MCU directly receives an analog voltage value, and the digital quantity is transmitted outward through the communication circuit after thecalculation processing, thereby avoiding interference on an analog signal transmitting over a long distance, and improving the stability of the cloth boundary identification sensor.

An electric power steering apparatus is configured in such a way as to include a first filtering unit that applies filtering processing to the detected steering torque signal and outputs the processed torque signal; a control unit that generates and outputs a motor drive signal, based on a steering torque signal outputted from a first filtering unit; a second filtering unit that applies filtering processing to the detected steering torque signal and outputs the processed torque signal; and an interlock unit that generates and outputs a motor drive inhibition signal, based on the steering torque signal outputted from the second filtering unit. The second filtering unit performs filtering processing in such a way as to output a steering torque signal the same as or similar to the steering torque signal that is outputted from the first filtering unit at least when a vehicle is in a predetermined driving condition.