A method to manufacture electric power steering systems is proposed. First, an electric motor having a drive shaft, a coupling device, and a worm gear having a worm shaft are provided. Then, an adjusting sleeve is provided, and an individual axial position of each adjusting sleeve in its associated opening is determined in order to achieve a specific axial preloading force on the worm shaft. The adjusting sleeve is press-fitted into the axial opening in the determined axial position, and a spring element is installed in the adjusting sleeve so that the spring element is supported on one end axially on the drive shaft and on its other end it is supported axially on the adjusting sleeve, and said spring element acts upon the worm shaft with the preloading force in the axial direction via the adjusting sleeve.

A gearbox includes a first divided body and a second divided body, and a shaft projection is formed on and a through-hole is formed in divided surfaces of the first divided body and the second divided body. A second recess on the second divided body side includes a second arc portion formed concentrically with an axis center of a worm wheel, and an upper linear portion and a lower linear portion which extend linearly toward the first divided body side from both ends of the second arc portion. A first recess on the first divided body side includes a first linear portion which extends linearly in a direction orthogonal to an intersecting direction, and an upper arc portion and a lower arc portion which are formed continuous to both ends of the first linear portion.

An electromechanical power steering system for a motor vehicle includes a worm shaft which can be driven by an electric motor and which meshes with a worm wheel coupled to a steering shaft. The worm shaft is rotatably mounted in a bearing which has at least one bearing ring fitted in a retainer that can be displaced relative to the worm wheel. In order to specify an electromechanical power steering system having an improved retainer, which has higher dimensional stability and increased stiffness, according to the invention the retainer has a main body of plastic, which is injection-molded onto the bearing ring as an injection-molded part.

A sensor is used in measuring the torque applied to a slew drive. The slew drive includes a worm gear and a worm wheel and the sensor is coupled with a securing device that is used to secure the worm gear to the slew drive housing. The sensor generates a signal which is indicative of the torque on the worm wheel. The worm gear is secured to the slew drive housing by a first bearing and a second bearing. Two end plates and eight bolts are also used to further secure the worm gear and the bearings to the slew drive housing. By tightening the bolts, a compressive force is applied on the worm gear through the bearings. The applied torque on the worm wheel causes an axial force on the worm gear. The axial force is transmitted through the worm gear, the bearings, the end plates, and the bolts. One or more sensors can be embedded in one or more of the end plates or the bolts to measure the strain, in the end plates or the bolts, due to the axial force. A control device receives the signal from the sensor and stores, analyses, and/or communicates the signal.

Reducer device having electric power steering, including a support member, an endless screw, a toothed wheel that meshes with a helical spline arranged on the endless screw, the endless screw including a first end capable of being rotated, and a second end receiving a first rotation-guiding means and a second rotation-guiding means, respectively, causing the endless screw to pivot relative to the support member, the second rotation-guiding means including a damping sleeve and a rotation-guiding device, the sleeve surrounding the rotation-guiding device, the second rotation-guiding means including a centering means including a press-fitting part inserted into the rotation-guiding device, and an attachment part rigidly connected to the support member.

The reduction gear box for a chain binder generally includes a housing member, a nozzle on the housing member to which a power tool may be connected, and an opening in the housing member within which the shaft portion of a chain binder may extend. The housing member includes a worm gear assembly and a main gear assembly therein. The worm gear assembly is in communication with the main gear assembly such that rotation of the worm gear assembly causes the main gear assembly also to rotate. In use, a shaft portion of a chain binder can be positioned within the housing opening and in communication with the main gear assembly. The power tool can be operated to rotate the worm gear assembly, and thereby effectuate rotation of the main gear assembly to extend or retract the chain binder in communication therewith.

The invention relates to a gear reducer (1) for an assisted-steering module, including a casing (3), a worm (4) which meshes with a worm wheel (6), and a spring (10) for taking up gear play, which presses said worm (4) radially against the worm wheel (6), the wall of the casing (3) being bored, away from of the axis (XX′) of the worm, with an opening (14) sealed by a plug (15), the spring (10) for taking up gear play including at least one retaining lug (17, 18) which projects radially to the axis (XX′) of the worm (4), and the hub (20) of the plug (15) having a guiding wall (21) that is substantially transverse to the axis (XX′) of the worm (4), which is designed to be placed axially opposite said at least one retaining lug (17, 18), in order to prevent the axial movement of the spring (10) beyond a predetermined functional travel.

A cam transmission mechanism includes a rotary disk, a camshaft, contact members and a housing. The rotary disk has a periphery formed with equidistant projections, any two adjacent ones of which define an accommodating recess. The camshaft includes a shaft rod and a cam body that has at least one groove communicated with some of the recesses of the rotary disk. The groove and the recesses cooperate to form a plurality of confining spaces, within which the contact members are accommodated freely rollably for rotation transfer from the camshaft to the rotary disk. The housing is connected to the rotary disk for confining the contact members in the confining spaces, respectively.

A gearbox assembly includes a housing, a cover, a screw rod inserted through the housing along a first direction, a worm wheel integrally formed on the screw rod, and a worm arranged in the housing along a second direction perpendicular to the first direction. The worm is driven into rotation by a driving shaft, so that the worm drives the worm wheel and the screw rod into rotation through a kinetic pair. The screw rod moves a lifting mechanism attached to the screw rod in a vertical direction through screw transmission. A stop pin is arranged on the housing and positioned in the direction of extension of a free end of the driving shaft of the worm against the free end.

An electromotive furniture drive includes a drive motor including an output shaft, a lift spindle arranged in a common plane with the output shaft, and a gear assembly configured to couple the output shaft of the drive motor to the lift spindle. The gear assembly includes an intermediate shaft which intersects the common plane between the lift spindle and the output shaft.