Abstract: The invention relates to a method for producing a gear, said method including a step (a) during which a supporting core is made from a first polymer material, said supporting core comprising a hub, with a director axis (XX?), as well as a flange which extends radially from said hub to a peripheral flanged edge, said method then involves a coating step (b) which comprises producing a permanent coating layer, made of a second polymer material, by overmolding on the supporting core, including integrally both a front layer which covers the upper surface of the flange, and a side layer which extends said front layer axially by covering the outer radial surface of the flanged edge, such that said side layer forms a rim, the teeth of the gear being made in the radial body of said rim.

Abstract: A cycloidal gear pair reducer including an input shaft, mounted in a reducer casing such that it rotates about an axis referred to as “main axis”, an eccentric member carried by the input shaft and rotated by the latter, at least one cycloidal disc rotatably mounted on the eccentric member and having a cycloidal toothing, at least one ring gear provided with a receiving toothing with which the cycloidal toothing of the cycloidal disc meshes, and an output shaft, separate from the input shaft, arranged to be rotated by the cycloidal disc; the cycloidal toothing of the disc and the corresponding receiving toothing of the ring gear being helical.

Abstract: A method for manufacturing a torque sensor, which includes first and second collection rings for collecting a magnetic flux, the rings being recessed in a sensor housing and separated by an air gap, during which a sensor bundle including a Hall-effect cell is prepared, provided with an adapter and inserted into an access opening of the sensor housing so as to place the Hall-effect cell in the air gap, and so that the adapter subdivides the access opening into a first recess (“preservation recess”), which opens onto the air gap and contains the Hall-effect cell, and a second recess (“filling recess”), which communicates with the outside, and then the sensor bundle is attached to the sensor housing by overmoulding, by pouring a coating material, such as a resin, into the filling recess, while the adapter prevents the coating material from filling the preservation recess and from wetting the Hall-effect cell.

Abstract: A cycloidal gear pair reducer including an input shaft, mounted in a reducer casing such that it rotates about an axis referred to as “main axis”, an eccentric member carried by the input shaft and rotated by the latter, at least one cycloidal disc rotatably mounted on the eccentric member and having a cycloidal toothing, at least one ring gear provided with a receiving toothing with which the cycloidal toothing of the cycloidal disc meshes, and an output shaft; wherein the reducer comprises a suspension device arranged to return elastically the cycloidal toothing of the cycloidal disc and the receiving toothing of the ring gear towards one another such that the meshing backlash between the cycloidal disc and the ring gear is self-adjusted along at least one radial component relative to the main axis.

Abstract: A plug including a hub which extends along a central axis and is defined radially by a side wall wherein an annular groove is formed, which receives a sealing member, the groove provided between a bottom wall and first annular edge wall, and a second annular edge wall, which axially define the groove, the hub being formed by the combination of a first hub section on which the first edge wall is formed, and a second hub section on which the second edge wall is formed, the first hub section and the second hub section being assembled so that they meet at a gasket face which is secant to the central axis and the bottom wall of the groove, so the line of the intersection of the gasket face with the bottom wall is contained axially between the first and second edge wall over the entire perimeter of the groove.

Abstract: A mechanism including at least one wheel which is mounted rotatably movable about a rotation axis, in a casing containing a lubricant, such as grease, the wheel being defined radially by a peripheral rim and axially by at least one first wheel flank, whereas the casing forms a covering crown which overlaps the first wheel flank, the wheel including at least one vane which projects axially on the first wheel flank, towards the covering crown, whereas the casing includes at least one deflector which projects axially on the covering crown, towards the first wheel flank, the vane and the deflector being arranged so that when a first leading edge of the vane approaches and then overflies a retaining edge of the deflector in the first direction of rotation, the imaginary intersection point thereof is shifted radially towards the rim so that the lubricant is sent back towards the rim.

Abstract: A power-steering device intended to be fitted on a vehicle-receiving structure, such as a cradle, the device including a rack as well as at least one actuator subassembly including at least one assistance motor, one drive gear, as well as one load-bearing structure that carries the assistance motor and is arranged to support and guide the drive gear and the rack relative to one another, the device further including one containment casing that is separate from the actuator subassembly and is fonned by connecting at least one base and one bell housing, which are attached to one another by a sealed joint such that the containment casing prevents the actuator subassembly from being exposed to water splashes, dust and salt spray from the outside environment when the power-steering device is in place on the receiving structure of the vehicle.

Abstract: The invention relates to a vehicle (2) provided with a power-steering device (1) which includes at least one steering rack (3) and an assistance motor (4) arranged to drive said steering rack (3), as well as at least one on-board computer (13) inside the vehicle (2), intended for controlling said assistance motor (4), the computer (13) being placed mostly, and preferably entirely, below the rack (3), preferably in a shell (20), inside of which the rack (3) is translatably guided, and inside of which a space for the computer is arranged for said purpose.

Abstract: A vehicle fitted with a steering device including a steering mechanism protected by a steering casing, the steering casing itself being housed in an engine compartment that is separated from the interior of the vehicle by a dashboard, the steering device also including a steering wheel, located in the interior, and to which the steering mechanism is connected by a steering column that extends out of the steering casing and passes through the dashboard, the vehicle including, in order to provide a seal around the steering column, between the steering casing and the dashboard, an elastomeric coupling gasket including, in a single piece, a central first sealing ring that surrounds and clamps around the steering column and a peripheral second sealing ring that is inserted between the steering casing and the dashboard, at a distance from and around the first sealing ring.

Abstract: The present invention concerns a method for assembling a modular cradle (1) for a vehicle steering axle, said method comprising a prefabrication step (a), which involves separately producing a base (3), a first module (10) that comprises a first section (2A) of a steering housing (2) for guiding a rack, and a first bearing (11) for receiving a stabilizer bar (13), a second module (20), separate from the base (3) and from the first module (10), which comprises a second section (2B) of the steering housing (2) for guiding the rack and a second bearing (21) for receiving the stabilizer bar (13), followed by an assembly step (b), which involves mounting and securing the first module (10) on a left-hand receiving area (7) of the base (3), and the second module (20) on a right-hand receiving area (8) of said base (3).

Abstract: A method of manufacturing a wheel has a step (a) during which, by injecting a first polymer material into a first mould, a bearing core is created that extends from a radially internal wall that forms the ball of a steering axis, as far as a radially external peripheral edge, followed by a step (b) of coating during which step a coating layer is overmoulded in a second polymer material over the bearing core to form a rim around the peripheral edge, the method being such that during step (a) of creating the bearing core, a preformed reinforcing hoop made of a third material referred to as “reinforcing material” is placed in the first mould then the reinforcing hoop is at least partially embedded in the peripheral edge during injection of the first material.

Abstract: The invention relates to a method for producing a gear, said method including a step (a) during which a supporting core is made from a first polymer material, said supporting core comprising a hub, with a director axis (XX?), as well as a flange which extends radially from said hub to a peripheral flanged edge, said method then involves a coating step (b) which comprises producing a permanent coating layer, made of a second polymer material, by overmoulding on the supporting core, including integrally both a front layer which covers the upper surface of the flange, and a side layer which extends said front layer axially by covering the outer radial surface of the flanged edge, such that said side layer forms a rim, the teeth of the gear being made in the radial body of said rim.

Abstract: A method for manufacturing a wheel including a step (a) during which a liquid to be polymerised is cast into a first mould so as to solidify same into a tubular preform, with main axis, the first mould including modelling cores in order to form recesses, of the rib type, in the radial thickness of the tubular preform; followed by a cutting step (b), during which the tubular preform is cut perpendicular to the main axis thereof, and secant to the recesses, so as to obtain a tubular preform section forming a rim; followed by an overmoulding step (d), during which said rim is placed in a second mould, concentrically with a central supporting member, such as a bushing or a shaft, and a polymer filling material is injected so as to create an intermediate disc that provides the attachment of the rim to the central supporting member.

Abstract: The present invention concerns a method for assembling a modular cradle (1) for a vehicle steering axle, said method comprising a prefabrication step (a), which involves separately producing a base (3), a first module (10) that comprises a first section (2A) of a steering housing (2) for guiding a rack, and a first bearing (11) for receiving a stabiliser bar (13), a second module (20), separate from the base (3) and from the first module (10), which comprises a second section (2B) of the steering housing (2) for guiding the rack and a second bearing (21) for receiving the stabiliser bar (13), followed by an assembly step (b), which involves mounting and securing the first module (10) on a left-hand receiving area (7) of the base (3), and the second module (20) on a right-hand receiving area (8) of said base (3).

Abstract: The invention relates to a magnetic flux collector for a torque detection device. The collector includes two coaxial magnetic cylinder heads (6, 7), having respectively interlocked teeth (17, 28), overmolded by means of a plastic material. The two cylinder heads (6, 7) have, at the periphery thereof, notches (18, 19, 23) provided such as to engage with matching grooves (32, 33) which comprise a cylindrical cavity (31) of a mold (30) for overmolding the cylinder heads with the plastic material. The two cylinder heads (6, 7) are therefore positioned in a very accurate manner relative to one another, before injecting the overmolding plastic material. The invention can be used for the production of torque sensors used in the power-steering systems of automobiles.

Abstract: The invention relates to a push device (8) which includes a rotary pad (10) in which the inner periphery (11) is off-center relative to the outer periphery (12) and applied to the rear (9) of the rack (3) which is thereby pushed towards the teeth of the steering pinion (5). A clearance compensation mechanism (17) includes a thrust member (19) pressed against a radial arm (18) of the pad (10) by a compression spring (20) inserted between said member and an element (23) secured to the support (13) of the pad (10). A mobile stop (21) rotatably mounted relative to the element (23) comprises toothings having staggered gear teeth cooperating with notches of the thrust member (19). The stop (21) is connected to the element (23) by means of a torsion spring (22). The notches successively cooperate with the staggered teeth.

Abstract: The invention relates to a magnetic flux collector for a torque detection device. The collector includes two coaxial magnetic cylinder heads (6, 7), having respectively interlocked teeth (17, 28), overmoulded by means of a plastic material. The two cylinder heads (6, 7) have, at the periphery thereof, notches (18, 19, 23) provided such as to engage with matching grooves (32, 33) which comprise a cylindrical cavity (31) of a mould (30) for overmoulding the cylinder heads with the plastic material. The two cylinder heads (6, 7) are therefore positioned in a very accurate manner relative to one another, before injecting the overmoulding plastic material. The invention can be used for the production of torque sensors used in the power-steering systems of automobiles.

Abstract: The invention relates to a push device (8) which includes a rotary pad (10) in which the inner periphery (11) is off-centre relative to the outer periphery (12) and applied to the rear (9) of the rack (3) which is thereby pushed towards the teeth of the steering pinion (5). A clearance compensation mechanism (17) includes a thrust member (19) pressed against a radial arm (18) of the pad (10) by a compression spring (20) inserted between said member and an element (23) secured to the support (13) of the pad (10). A mobile stop (21) rotatably mounted relative to the element (23) comprises toothings having staggered gear teeth cooperating with notches of the thrust member (19). The stop (21) is connected to the element (23) by means of a torsion spring (22). The notches successively cooperate with the staggered teeth.

Abstract: An altimetric type measurement method for use on a satellite transmits a pulse towards the surface of the sea and carries out frequency transformation on the return signal resulting from the reflection of this pulse at the surface of the sea. This produces a spectral signal of samples successively comprising:(a)--a first zone with a low amplitude level,(b)--a second zone with a sharply increasing slope ending at a peak, and(c)--a third zone of decreasing slope.Samples of the spectral signal are selected within a selection zone that corresponds to the first and second zones for a predetermined maximal level of the height of the waves at the surface of the sea and maximum likelihood processing is applied only to the selected samples.