1182 results about "Constant-velocity joint" patented technology

A constant-velocity joint includes an outer ring formed formed with a bore defined by six flat surfaces parallel to its axis, and a trunnion member received in the bore of the outer ring. The trunnion member has an outer periphery formed with three first spherical surfaces circumferentially spaced apart from each other and three second spherical surfaces circumferentially spaced apart from each other and each disposed between adjacent first spherical surfaces. Each first spherical surface is in contact with one of the flat surfaces at a point offset from the circumferential center of the flat surface in one circumferential direction. Each second spherical surface is in contact with another flat surface at a point offset from the circumferential center of the flat surface in the other circumferential direction. At least one of the outer ring and the trunnion member is made of a synthetic resin.

A constant-velocity joint includes an outer ring formed with an annular space therein having an opening at one end thereof. The annular space is defined by a radially outer wall and a radially inner wall. One of the radially inner and outer walls is formed with three axially extending track grooves circumferentially spaced apart from each other by 120 degrees. A cage is inserted in the annular space with one end thereof protruding from the opening of the annular space. A second shaft is provided on the one end of the cage. Balls are retained by the cage and adapted to roll in the track grooves. At least one of the outer ring and the cage is formed of a synthetic resin.

An in-wheel motor includes a motor generating motive power, a planetary gear arranged toward a wheel disc relative to the motor to reduce an output of the motor, and a shaft arranged toward the wheel disc relative to the planetary gear and connected to a planetary carrier. Shaft is connected to a constant velocity joint transmitting the motive power to wheel disc.

A boot arrangement is provided for use with a constant velocity joint and shaft assembly including a shaft, a first joint part slidably engageable with the shaft, and a second joint part cooperable with the first joint part to transmit torque therebetween. The boot arrangement includes a sleeve adapted to slidably engage the shaft and having first and second ends. The second end of the sleeve is adapted to be connected to the first joint part. The arrangement further includes a boot having a first end adapted to be connected to the sleeve proximate the first end of the sleeve, and a second end adapted to be operatively connected to the second joint part.

A propeller shaft assembly (10) comprising a constant velocity universal joint (12) including a hollow shaft (20) and a connecting shaft (18) is provided. The hollow shaft (20) includes an aft open area (34) and is connected to an outer joint part (23) that has outer ball tracks (32). The connecting shaft (18) is connected to an inner joint part (25) that has inner ball tracks (46). A ball cage (26) that has a plurality of balls (28) is included. A standard plunge (22) that has an aft plunge portion (54) is also included. The aft plunge portion (54) and the aft open area (34) having inner diameters that are greater then or equal to an inner diameter D.sub.1 of the outer joint part (23). A first stop (55) limits the ball movement of travel in the aft direction. The first stop (55) is forcibly dispensable such that the connecting shaft (18) may release the first stop (55) and intrude significantly within the aft open area (34) which is outside a normal operating range (24).

A spherical inner surface 5 of the outer race 1 and track grooves in the outer race 1 are each defined by a post-hardening cut surface. A spherical outer surface 6 of the inner race 2 and track grooves in the inner race 2 are also each defined by a post-hardening cut surface. A retainer 4 has a spherical outer surface 10, a spherical inner surface 11 and inner surfaces of the pockets 9, all of which are defined by a post-hardening cut surface. Respective surfaces of the retainer 4, the outer race 1 and the inner race 2 which contact with each other are formed with a surface treatment layer for reducing a frictional resistance.

Disclosed are random copolymers derived from ethylene and at least two different alkyl acrylate comonomers, with or without an acid cure site-containing comonomer. In particular, disclosed are copolymers derived from copolymerization of (a) from 10 to 50 weight % of ethylene; (b) from 5 to 55 weight % of a first alkyl acrylate; (b) from 15 to 80 weight % of a second alkyl acrylate; and (d) from 0 to 7 weight % of a monoalkyl ester of 1,4-butene-dioic acid. Such copolymers exhibit lower glass transition temperatures (Tg) relative to previous ethylene copolymers comprising a single alkyl acrylate comonomer and maintain the good heat and fluid resistance when employed to produce cured elastomeric compositions as well as the improved low temperature properties. This invention also provides compounded compositions comprising these copolymers, and cured compositions (i.e., vulcanizates) as well as rubber articles formed from these compounded compositions, such as hoses, dampers, seals, gaskets, constant velocity joint (CVJ) boots and shaft boots.

The present invention provides grease which prevents frictional wear on a lubricating surface and excellent in performance of preventing occurrence of flaking, heat-resistant performance, and long-term durability, a grease-enclosed rolling bearing, a constant velocity joint, and rolling parts. Grease is composed of base grease, essentially containing a thickener, to which at least 0.01 to 15 wt % of one substance selected from among bismuth and inorganic bismuth compounds is added. The inorganic bismuth compounds are at least one inorganic bismuth selected from among bismuth sulfate, bismuth trioxide, bismuth carbonate, and sodium bismuthate. The above-described grease is used for the rolling bearing and the constant velocity joint. A coating film of at least one substance selected from among the bismuth and the inorganic bismuth is formed on surfaces of the rolling parts.

The invention relates to a test table for a five-function test of a driving shaft assembly of a constant velocity universal joint. The test table comprises a rack, a fixing end and a slippage end, wherein the fixing end and the slippage end are located on the rack; the fixing end comprises a guide rail and a sliding block, a swinging bedplate, a linear displacement driving assembly, a sliding bedplate, a torque rotating speed sensor, a spindle supporting base, a spindle, a clamp, a swinging and driving assembly, a spindle driving assembly, a linear displacement sensor and the like; the slippage end comprises a swinging bedplate, a clamp, a rotating shaft, a supporting base, a pull pressure sensor, a rear sliding board, a front sliding board, a guide rail and a sliding block, a swinging and driving assembly, a linear displacement sensor and the like; and the rack comprises a guide rail and a sliding block, a linear displacement sensor, a linear displacement driving assembly and the like. With regard to the driving shaft assemblies of the constant velocity universal joint with the different structures and sizes of the working pieces, the test table can test working pieces with various specifications and structures by replacing the clamps, and adjusting the position of the clamp at the fixing end and the position of the clamp at the slippage end, and the size of a rotary center distance.

A left drive shaft and a right drive shaft each include an inside constant velocity joint and an outside constant velocity joint with a ball spline mechanism provided between the inside constant velocity joint and the outside constant velocity joint for enabling the distance between the inside constant velocity joint and the outside constant velocity joint to be contracted and extended. The ball spline mechanism includes a spline shaft having an outer circumferential surface provided with a plurality of axial grooves extending in the axial direction, a tubular portion surrounding the periphery of the spline shaft and having an inner circumferential surface provided with a plurality of axial grooves extending in the axial direction and a plurality of balls capable of rolling while being fitted in the axial grooves and in the axial grooves. In addition, a left lower arm and a right lower arm are formed into an A-shape and are supported by a lower part of a rising portion and a lower end of the downwardly extending portion via a lower supporting shaft.

A sensor for detecting a speed of rotation is an active sensor, a sensing portion 35 of the sensor directly faces the magnetic encoder 10 without interposition between it and the encoder 10, and a harness 34 (or connector) of the sensor 30 for detecting the speed of rotation is taken out of a gap between a knuckle N and a constant velocity universal joint 9.

A rolling boot assembly includes a shroud having a first portion and a second portion, and a radial boot having a first section and a second section. The second portion of the shroud has a free end. The first section of the radial boot is connected to the first portion of the shroud advantageously allowing the radial boot to roll axially toward the second portion of the shroud when the second section of the radial boot is selectively attached to a shaft or an inner joint part and the first portion of the shroud is selectively connected to an outer joint part. The second portion of the shroud remains unconnected. Also provided is a constant velocity joint assembly.

A constant velocity joint includes an outer race (1) having a spherical inner surface (2) with track grooves (3) each extending in an axial direction thereof, an inner race having a spherical outer surface (5) formed with track grooves (6) equal in number to the number of the track grooves (3) in the outer race (1), a plurality of torque transmitting balls (7) sandwiched between the inner race (4) and the outer race (1) and accommodated in part in the track grooves (6) in the inner race (4) and in part in the track grooves (3) in the outer race (1), and a cage (8) for retaining the torque transmitting balls (7) while being guided by and between the spherical inner surface (2) of the outer race (1) and the spherical outer surface (5) of the inner race (4). This constant velocity joint of the structure described above is featured in that at least the track grooves (3) in the outer race (1) and an entry chamfer (11) of the outer race (1) are formed by a plastic working process. A method of making the outer race (1) in the constant velocity joint is also provided.

A hybrid drive arrangement for a motor vehicle comprising two close-coupled electric traction motors/generators on the output of the vehicle differential. A constant velocity joint coupling device is incorporated into the central axis of the traction motors between the differential output shafts and the independent articulated axle shafts for the drive wheels. One embodiment comprises a kit for retrofitting an existing vehicle. The kit comprises two electric traction motors/generators incorporating the constant velocity joint coupling devices, two devices for mounting the traction motors to each side of the differential case between the differential and the independent, articulated axle shafts of the existing vehicle, a battery system electrically coupled to the traction motors, two traction motor controllers, and a vehicle sensing and control system. The arrangement provides for improved acceleration, deceleration, cornering, ease of parking, and fuel economy.

An inner race 5 is retained by a crimped portion 30, so that a pre-load is applied to rolling elements 6. A bearing unit for wheel support 1 is connected to a constant velocity joint 2 through tightening of a nut 24. By regulating the tightening force of the nut 24, at the area of contact between the inside end of the crimped portion 30 and the outside end of the outer ring of the constant velocity joint 14, the load per unit length is controlled up to 125 N/mm, or the surface pressure is controlled up to 1.5x10<8 >Pa. Consequently, a bearing unit for wheel support is realized at a low cost with the pre-load securely applied, preventing unpleasant noise from occurring during operation, and preventing play due to plastic deformation.

A rear suspension system for an all-terrain vehicle having a chassis and at least three wheels. Two trailing arms are pivotally connected to a chassis. Each of the trailing arms includes a drive shaft bearing. A CV joint pivot arm is pivotally connected to the chassis. A CV joint housing is connected to the CV joint pivot arm. The CV joint housing includes a CV joint bearing. A CV joint is housed inside the CV joint housing and is supported by the CV joint bearing. A drive shaft extends through the CV joint and rigidly connected to the CV joint. The drive shaft is further supported by each of the drive shaft bearings attached to the trailing arms. A shock absorption system is connected between the drive shaft and the chassis. In a preferred embodiment, a cross bar is connected between the trailing arms for stability. Also, preferably, the rear suspension system includes a sway bar and linear shock absorbers acting in combination to provide optimum suspension.

A decoupler for coupling/decoupling drive between a power train output and road wheels or marine drive means in an amphibious vehicle, is integrated with a constant velocity joint, saving space, weight, and cost for low production volumes, and simplifying mounting arrangements. Power train output shaft enters casing through aperture, and terminates in a flange with splines. Baulk ring and synchrocone provide synchromesh action between drive ring and driven CV joint cap. Rod is attached to selector arm, located in slot, allowing coupling and decoupling by an external control, which may be assisted by a pneumatic or hydraulic cylinder. The synchromesh parts may be sourced from truck gearboxes. CV joint is mounted in bearings, and may be a Rzeppa type. Groove allows fitment of a conventional dust gaiter.