179 results about "Radial plane" patented technology

The invention discloses coating equipment with an angle-adjustable sample holder, which comprises a main cabin body, a vacuum pump assembly, a floating seat, a flange seat, an umbrella-shaped sample holder, a transmission rod and a first driver, a vacuum cavity is arranged in the main cabin body, and the vacuum pump assembly is communicated with the vacuum cavity; the floating seat is arranged at the upper part of the mounting hole of the main cabin body in a liftable manner, an elastic sealing sleeve is connected between the floating seat and the mounting hole, the flange seat is arranged at the lower side of the floating seat and extends into the vacuum cavity, and the elastic sealing sleeve surrounds the outer side of the flange seat; the umbrella-shaped sample rack comprises a plurality of carrier plates, the plurality of carrier plates are respectively hinged to the lower end of the flange seat, the hinge axes of the carrier plates are parallel to the radial plane of the flange seat, a through hole is formed in the flange seat, and the transmission rod is axially and movably mounted in the through hole; the first driver is in transmission connection with the transmission rod in the axis direction, a plurality of rack parts are arranged at the lower end of the transmission rod, gear parts are arranged at the ends, close to the flange base, of the multiple carrying plates, and the rack parts are meshed with the gear parts.

An off-road vehicle includes an intake duct and an air cleaner. The intake duct defines a clean conduit. The air cleaner is connected to the intake duct, and includes an air cleaner case and an air cleaner element. The air cleaner case defines an internal space of the air cleaner. The air cleaner element divides the internal space into dirty and clean regions. The air cleaner case includes an intake port, an exhaust port, and a cylinder. The intake port faces the dirty region. The exhaust port faces the clean region and communicates with the clean conduit. The cylinder protrudes diagonally upward and toward the internal space. The cylinder has a protrusion end portion that is inclined relative to an imaginary radial plane in an angle direction from the plane toward an imaginary vertical plane. The imaginary radial plane is orthogonal to an axis of the cylinder.

The invention discloses a propeller hub for a helicopter, a rotor system and the helicopter, and relates to the technical field of aircrafts, the propeller hub comprises a variable pitch hinge mounting seat, an inner propeller hub center body, an elastic device and at least three force transmission devices, and the inner propeller hub center body is arranged in an inner cavity of the variable pitch hinge mounting seat; the elastic device is connected with the inner propeller hub center body and the variable pitch hinge mounting seat; each force transmission device is movably connected with the inner propeller hub center body, each force transmission device is connected with the inner side wall of the variable-pitch hinge mounting seat, and the variable-pitch hinge mounting seat can rotate relative to the force transmission devices so as to generate tilting rotation relative to the radial plane of the rotor shaft; when the rotor shaft rotates, the rotor shaft can drive the inner propeller hub center body, the force transmission devices and the pitch-variable hinge mounting base to rotate. And when the variable-pitch hinge mounting seat tilts relative to the radial plane of the rotor shaft, the elastic device can be compressed or stretched, and the variable-pitch hinge mounting seat can be reset under the action of restoring force of the elastic device. Flight flexibility and stability can be ensured, and the flight quality of the helicopter is effectively improved.

The invention provides a floating mechanism for blind plugging connection and a liquid cooling blind plugging connection system. The floating mechanism comprises a mounting fixing seat fixedly connected with a case; the joint mounting seat is used for mounting a blind-plug joint; the floating connecting assembly is connected between the mounting fixing seat and the joint mounting seat and is configured to allow the joint mounting seat to float in a radial plane relative to the mounting fixing seat; the independent guide mechanism is arranged between the mounting fixing seat and the joint mounting seat and is separated from the floating connecting assembly in space; the independent guide mechanism is configured to restrain axial deflection of the connector mounting base when the connector mounting base floats in the radial direction. The blind plug connector is used for solving the problem that an existing blind plug connector cannot meet the dual requirements of compensating macroscopic assembly tolerance and restraining microcosmic angle deflection at the same time in a limited space due to mutual restriction of the floating amount and the deflection control capacity, and consequently plug-in failure is caused.

A ring seal includes an annular body defining an axial hole therethrough for fluid passage in an axial direction and having a radial plane that is perpendicular to the axial direction. An axial side of the ring seal includes deformable annular protrusions extending from the annular body in an axial direction to first and second apexes, which are configured to deform upon engagement with a first planar sealing surface and define a trough therebetween to engage a first annular rounded sealing protrusion or ring. So configured, the ring seal can seal two different types of flow components.

This invention provides a high-efficiency integrated wastewater treatment device, including a flocculation unit. The flocculation unit includes a drive component, a transmission shaft, a dosing container, and an impeller assembly. The drive component is connected to the transmission shaft; the dosing container communicates with the inner cavity of the transmission shaft; the transmission shaft has several dispensing holes; the impeller assembly includes a lower ring and an upper ring coaxially sleeved on the transmission shaft, with the lower and upper rings spaced apart along the axial direction of the transmission shaft; several blade groups are evenly distributed circumferentially between the lower and upper rings; each blade group includes inner and outer blades spaced radially, with the inner and outer blades located in the same radial plane; both the inner and outer blades are plate-like structures with two arc-shaped edges, the arc-shaped edges of the inner blades protruding towards the transmission shaft, and the arc-shaped edges of the outer blades protruding away from the transmission shaft. This invention provides a high-efficiency integrated wastewater treatment device that effectively improves the flocculation effect of the entire space, creating conditions for efficient sedimentation.

To improve total performance of high mileage, high speed durability, and steering stability.SOLUTION: This tire comprises: a carcass including a carcass code; a belt including a belt code and provided outside the carcass in a tire radial direction; a band including a band code and provided outside the belt in the tire radial direction; and a tread provided outside the band in the tire radial direction. The band code contains a polyethylene terephthalate fiber. When the tread is seen in the tire radial direction in a plan view, an intersection angle which is smaller one of angles between a tire circumferential direction and the longitudinal direction of the belt code is 0-25 degrees. The belt code includes four or more filaments. A radio (Dba / Dbr) of a band code diameter Dba (mm) to a belt code diameter Dbr (mm) satisfies the following expression: 0.5<Dba / Dbr<1.8 (Expression 1).SELECTED DRAWING: Figure 1

The application relates to a main shaft fault identification method for a wind driven generator under a variable load operation state, and the method comprises the following steps: acquiring and storing at least two equal-angle interval sampling vibration signals in orthogonal directions in the radial plane of the front and rear rolling bearings of the main shaft and corresponding rotating speed signals; judging whether the storage amount of the equal-angle interval sampling vibration signals reaches a preset storage amount, if the judgment is yes, performing order spectrum calculation on the equal-angle interval sampling vibration signals, and extracting a fault feature vector; judging whether to trigger main shaft fault diagnosis according to a real-time vibration effective value, if the judgment is yes, inputting the fault feature vector into a pre-constructed confidence rule base model, obtaining the confidence degree distribution of each fault state through confidence reasoning, and identifying the unbalance and misalignment faults of the main shaft of the wind driven generator according to the confidence degree distribution. Compared with the prior art, the application can accurately extract non-stationary fault features under the variable load operation state of the wind driven generator, and improves the accuracy and reliability of fault diagnosis.

Circuit breaker and pressurized fluid handling system comprising such a circuit breaker. In the coupled configuration of the male (100) and female (200) elements of the circuit breaker (10), the first and second radial passages (126, 226) are in fluidic communication, and proximal (132) and distal (134) seals are arranged on either side of the radial passages. A first valve (110) comprises a distal stem (110C) sliding within a male body (102). In an intermediate coupling position, the proximal and distal seals are arranged on either side of the radial passages. The proximal and distal seals are received respectively in a proximal external peripheral groove (136) and in a distal external peripheral groove (138) of the male body (102).A first longitudinal distance (d138), measured between the distal external peripheral groove and a median radial plane (P126) of the first radial passage, is strictly greater than a second longitudinal distance (d136), measured between the proximal external peripheral groove and the median radial plane. Figure for the abstract: 1.

The present invention provides a fuel atomizing nozzle (1) for handling at least two fuels and an atomizing fluid, the fuel atomizing nozzle (1) comprising a solid body (10) having a mainly cylindrical shape around a longitudinal axis (X) defining a first end (11), a second end (12) and a contour surface (16) extending there between connecting the two ends (11, 12), wherein the first end (11) comprises at least one outlet (17), wherein the fuel atomizing nozzle (1) further comprises a fluid compartment (14) being arranged centrally around the longitudinal axis (X) in the solid body (10), at least a first and a second fuel compartment (15a, 15b) being arranged in a radial plane between the fluid compartment (14) and the contour surface (16), the fuel compartments (15a, 15b) having an annular shape, the at least first and second fuel compartments (15a, 15b) being connected to a pre-filling chamber (35) by at least a first and a second fuel channel (25a, 25b), respectively, at least one mixing chamber (40) being arranged between the fluid compartment (14) and the at least one outlet (17), and a fluid channel (24) connecting the at least one mixing chamber (40) and the fluid compartment (14), wherein the pre-filling chamber (35) has an annular shape, and the pre-filling chamber (35) is connected via a pre-filling channel (45) to the at least one mixing chamber (40).

This invention relates to the field of one-way valve technology, specifically to a low-opening-pressure ultrapure one-way valve, comprising a valve body, a first connecting sleeve, a second connecting sleeve, and further including a valve sleeve, a return spring, a drive assembly, a limit slider, a valve seat assembly, and a tension spring. The valve sleeve is connected to the valve body. Sealing rings are provided on the outer periphery of both the valve body and the valve sleeve. Threaded rings are integrally formed on both the end of the valve body and the end of the valve sleeve. An adjustment groove is provided on the inner periphery of the valve body, and a sliding groove extending to the inner side of the valve sleeve is provided inside the valve body. This invention solves the problem of one-way valves using ordinary thinner helical springs, where the helical spring undergoes radial twisting after repeated use, resulting in a reduction in the total length of the helical spring and preventing a tight fit between the valve disc and the valve body. This is achieved by setting different elastic coefficients for the front and rear sections of the return spring and designing the outer periphery of the return spring as a radial plane, ensuring that the return spring moves tightly against the inner wall of the valve sleeve after compression.

The utility model provides a damping bearing and a photovoltaic tracking support with an angle self-adaption function, the damping bearing comprises a bearing outer ring and a bearing inner ring, the bearing outer ring is provided with a groove with an annular surface, the groove is provided with an annular key groove, the outer surface of the bearing inner ring is provided with an annular spline, and the annular spline is provided with an annular groove. And the bearing inner ring is matched with the annular key groove through the annular spline and is rotatably matched with the bearing outer ring, so that the bearing inner ring realizes relative movement relative to the bearing outer ring in any radial plane of the damping bearing. According to the utility model, the damping function of the damping bearing and the function of the bearing are split, so that the angle self-adaptive capability is realized while the damping force provided by the damping bearing is reserved. The wedge blocks with the adjustable clamping positions are designed in the circumferential direction of the bearing assembly, so that the installation center of the square tube and the rotation center of the damping bearing have certain eccentricity while clamping is achieved, and normal operation of the support system is guaranteed.

Screw drive device for use with an impact wrench, comprising a drive shaft (12, 12a) having a drive end (14) that can be coupled to and driven by the impact wrench, and an insert end (44, 44a) with an annular wall (64, 64a), wherein the annular wall (64, 64a) forms a receiving recess (66, 66a) for receiving a screwdriver head (22, 22a) and the annular wall (64, 64a) has several radial holes (46) and each of the radial holes (46, 48) receives a coupling bearing (50, 50a, 50b) that can clamp the screwdriver head (22, 22a) in a drive position and release the screwdriver head (22, 22a) in a coupling position; a hollow coupling sleeve (16, 16a) having an upper end, a lower end and a central cavity (40) that receives the drive shaft (12, 12a), wherein the central cavity (40) has an upper end with a size defined for the passage of the drive end (14) of the drive shaft (12, 12a) and prevents the insert end (44, 44a) of the drive shaft (12, 12a) from passing through it, wherein the hollow coupling sleeve (16, 16a) has an annular groove (72, 72a, 72b) at the lower end of the central cavity (40), the annular groove (72, 72a, 72b) having a size defined to receive the coupling bearings (50, 50a, 50b) therein when the drive shaft (12, 12a) is in the coupling position, such that the loosen the screwdriver head (22, 22a) at the frustoconical ends (52) of the clutch bearings (50), but leave it in the corresponding radial holes (46, 48); a depth control part (18) surrounding the lower end of the hollow coupling sleeve (16, 16a), the depth control part (18) having a lower section (20) having a passage through which the screwdriver head (22, 22a) can extend; and a spring (58) that biases the drive shaft (12, 12a) in the direction of the drive position; characterized by the fact that: The coupling bearings (50, 50a, 50b) each have a cylindrical body with a frustoconical inner end (52) and a circular outer end (54) and are arranged such that they clamp the screwdriver head (22, 22a) in the drive position and the coupling bearings (50) can move from the coupling position to the drive position, wherein the cylindrical body has a total length “a”, the circular outer end (54) has a length “b” which is 1 / 4a, the cylindrical middle section (56) has a length “c” which is 1 / 2a, the frustoconical inner end (52) has a length “d” which is 1 / 4a, the cylindrical middle section (56) has a diameter of 1a, the frustoconical end forms a flat surface which has a diameter “e” which is 3 / 4a, and the circular outer end (54) has a radius “r” has a value of 1 / 2a, wherein the insertion end (44) of the drive shaft (12) has three radial holes (46),the insert end (44) is spaced apart from each other by 120 degrees on a radial plane of the insert end (44), the insert end (44a) of the drive shaft (12a) having three radial holes (46) arranged on a first radial plane of the receiving end (44a), and three radial holes (48) arranged on a second radial plane of the insert end (44a), the second radial plane being separated from the first radial plane, the hollow coupling sleeve (16a) having a first annular groove (72a) and a second annular groove (72b) for receiving the coupling bearings (50a, 50b) which are held in the radial holes (46, 48) arranged on the first and second radial planes when the screw drive device (10a) is in the coupling position, a locking projection (17) being located on one side of the drive shaft (12, 12a) above the insert end (44, 44a) is arranged to serve the screw drive device (10,10a) to fix in the drive position in the reverse direction in order to remove a tightened screw from a workpiece, wherein at least one locking notch (43) is formed at the upper end of the hollow coupling sleeve (16, 16a) and the locking projection (17) can pass through this to fix the screw drive device (10, 10a) in the drive position in the reverse direction, wherein when the locking projection (17) passes through the locking notch (43) and the hollow coupling sleeve (16, 16a) is rotated far enough, the locking projection (17) is held in the hollow coupling sleeve (16, 16a), wherein an axial slot (24) formed at the upper end of the depth control part (18) makes it possible to exchange the depth control part (18) and replace it with another depth control part of a different depth in order to change the depth of a screw driven into a workpiece,wherein the depth control part (18) has a lower section which is smaller than an upper section of the depth control part (18), and wherein each of the radial holes (46) on the first radial plane is spaced 60 degrees apart from each of the adjacent radial holes (48) on the second radial plane.

In the coupled configuration of the male and the female elements of the circuit breaker, the first and second radial passages are in fluid communication and the proximal and the distal seals are arranged on either side of the radial passages. A first valve comprises a distal rod sliding in a male body. In an intermediate coupling position, the proximal and the distal seals are arranged on either side of the radial passages. The proximal and the distal seals are respectively received in a proximal external peripheral groove and in a distal external peripheral groove of the male body. A first longitudinal distance, measured between the distal external peripheral groove and a median radial plane of the first radial passage, is strictly greater than a second longitudinal distance, measured between the proximal external peripheral groove and the median radial plane.

This invention provides a coreless stator for a high current density axial flux motor and an axial flux motor. The coreless stator of the high current density axial flux motor includes at least one stator winding layer, which includes several circumferentially spaced and independent conductive coil units. In each stator winding layer, several conductive coil units are processed on a conductive substrate using a subtractive process. Each conductive coil unit includes a planar working portion extending straight in a radial plane, an outer transition line portion connected to the outer end of the planar working portion, and an inner transition line portion connected to the inner end of the planar working portion. At least one of the outer transition line portion and the inner transition line portion is bent wholly or partially relative to the planar working portion, thereby forming a three-dimensional transition line portion. This directly releases the radial plane space occupied by the outer transition line portion and the inner transition line portion, thereby significantly increasing the radial width and total area of ​​the effective electromagnetic working area and achieving a significant improvement in torque and power density.

The utility model provides a crankshaft lightening hole machining auxiliary tool, and relates to the technical field of crankshaft lightening hole machining. A guide section, a transition section and a fixing section which are integrally formed are arranged on a body of the auxiliary tool, a plurality of wedge-shaped pieces protruding in the radial direction are arranged on the outer wall of the guide section in an annular array mode, a groove is formed between every two adjacent wedge-shaped pieces, the groove bottom of each groove extends inwards in the radial direction of the guide section to form a boss, and the groove bottom of each boss extends inwards in the radial direction of the guide section. The wedge-shaped piece extends along the outer portion of the transition section to form a wedge-shaped extending portion, and the plane where the fixing section is located in the radial direction is perpendicular to the outer wall of the wedge-shaped extending portion. According to the auxiliary tool for machining the crankshaft lightening hole, dynamic guiding of the boring rod is achieved by inserting the crankshaft lightening hole into the crankshaft pre-drilling hole, machining precision and stability are guaranteed, and efficiency is improved.

A ring seal includes an annular body defining an axial bore for fluid to pass therethrough in an axial direction and having a radial plane perpendicular to the axial direction. The axial side of the ring seal includes a deformable annular protrusion extending in an axial direction from the annular body to a first apex and a second apex, the protrusion configured to deform when engaged with the first planar sealing surface and define a groove therebetween to engage the first annular fillet sealing protrusion or ring. After such configuration, the ring seal can seal two different types of flow components.

The application discloses a kind of inner girth weld automatic welding equipment and inner girth weld automatic welding method of large diameter steel pipe, including equipment host, welding working device and connecting device, equipment host and / or welding working device are equipped with walking mechanism, connecting device includes the first connecting plate connected with equipment host, the second connecting plate connected with welding working device and the offset mechanism for connecting the first connecting plate and the second connecting plate and making the second connecting plate can be offset relative to the radial plane of steel pipe, equipment host is equipped with first positioning mechanism, and welding working device is equipped with second positioning mechanism;The offset function of connecting mechanism can reduce vibration, avoid equipment host vibration to influence the work and operation of welding working device, to ensure welding quality, and adapt to the axis of two steel pipes not coinciding, steel pipe straightness, roundness not meeting the standard case walking and positioning, so that the inner girth weld automatic welding equipment of large diameter steel pipe can still complete automatic welding.

The invention relates to an expansion anchor comprising an anchor bolt and an expansion sleeve surrounding the anchor bolt, an expansion body arranged on the anchor bolt for the expansion sleeve, the expansion body being arranged at least partially in front of the expansion sleeve, the expansion sleeve has a first annular groove on its outer face in the front region of the expansion sleeve, the first annular groove having a front side and a rear side. According to the invention, in at least one radial plane, the following conditions are adapted for the width w61: w61gt of the rear side of the first annular groove; 0.6 * d60 / tan [alpha] max, where d60 is the depth of the first annular groove in the at least one radial plane, and [alpha] max is the maximum angle of inclination of the expansion body in the at least one radial plane.

A roller bearing for a steering column includes a first ring, a second ring and at least one row of balls arranged between the two rings. The second ring including a casing, at least one insert arranged in the casing so as to form a raceway of the second ring, and at least one prestressing element mounted in the casing and exerting an axial force on the insert. The first ring has a raceway for the balls, the raceway having in cross-section a concave inner profile that is asymmetrical relative to a plane parallel to a radial plane passing through the center of the balls.

The invention relates to a method for joining at least two printed circuit boards (14, 16) intended to be electrically interconnected in an axial direction (A1) of the connection. The method comprises a step A) of joining at least one centering part (36) to at least one connection pin (26). The centering part (36) is intended to cooperate with at least one centering pin carried by the support element (78) in order to guide the printed circuit board (16) in a radial plane relative to the other printed circuit board (14).

The invention discloses an automatic centering device for combined assembly of turbochargers. The automatic centering device comprises a support frame, a centering device and a centering device, wherein the support frame is used for integrally mounting and supporting; the displacement assembly is installed on the supporting frame and can move in the horizontal direction and the vertical direction; the centering assembly is provided with a core body combined clamping jaw module used for grabbing the turbocharger core body; the floating mechanism plate is matched with the linear bearing through a steel ball roller pin, so that the clamping jaw module can flexibly float in a radial plane; the plug pin air cylinder can stretch out and lock the floating mechanism plate in the grabbing stage, and the grabbing positioning precision is guaranteed. Radial deviation is automatically eliminated in the pressing process, precise centering is achieved, damage to parts is avoided, the structure is reliable, and applicability is high.

The invention belongs to the technical field of hybrid magnetic suspension bearings, and discloses a staggered self-centering hybrid magnetic thrust bearing structure and a restoring force calculation method. According to the staggered self-centering hybrid magnetic thrust bearing structure, a radial repulsive force ring is used for generating a restoring force which counteracts the unbalanced force of an axial repulsive force ring in the radial direction and the gravity of a rotor, and the stability of two offset freedom degrees in a radial plane of the rotor is maintained; the axial repulsive force rings are used for counteracting unbalanced loads of the radial repulsive force rings in the axial direction and external axial loads and maintaining the stability of the rotor in the axial direction; the axial electromagnetic bearing is used for counteracting the overturning moment of the rotor around the radial plane and maintaining the stability of the rotor around the transverse rotation freedom degree and the vertical rotation freedom degree. The restoring force calculation method does not need to depend on finite element simulation, is suitable for occasions where calculation resources are limited and parameters in the initial stage of design need to be rapidly iterated, and has good rapidity, practicability and convenience in actual engineering application.

A container (1) with a petal-shaped bottom (3) has supports (8) that are convex to the outside of the container (1), and the supports are separated by concave grooves (10), which extend radially from the central dome (5) of the bottom (3) to the periphery (9) of its bottom, each support (8) has a middle face (12), which is concave toward the outside and is extended by end faces (13), and the end faces form a flat cross-section, intermittent placement ring (14), each groove (10) has an inner part (15) extending from the central dome (5), and an outer part (16) connected to the periphery (9), the inner part (15) and the outer part (16) are straight in cross section in the central radial plane of the groove (10), and together form an obtuse angle (P) protruding to the outside of the container (1), and are connected to the top (17) of the placement ring (14) at or close to its vertical position.

The invention relates to a separation supporting block and an elastic grinding piece spliced grinding wheel, and belongs to the field of grinding. Comprising two oppositely-arranged supporting faces, the two supporting faces abut against two circumferentially-adjacent elastic grinding pieces in a one-to-one correspondence mode, and boundary lines separated from the elastic grinding pieces are formed on the supporting faces. And the boundary is a broken line, a curve, a straight line forming an angle with the radial plane of the cup-shaped grinding wheel, or a straight line forming an angle with the radial plane of the peripheral grinding wheel. Stress generated on the boundary when the grinding wheel works can be dispersed, and the situation that the elastic grinding piece is broken at the boundary due to stress concentration, and consequently the grinding wheel loses efficacy is avoided.

The application discloses a grounding pay-off pulley device, which comprises a pulley frame, a pay-off pulley is axially connected in the pulley frame, a swing arm is axially connected on each side of the pulley frame, the swing arm and the pulley frame are fixedly connected through an extension rod, a grounding pulley is axially connected in the swing arm, the grounding pulley is electrically connected with a grounding wire, a nylon wire pressing wheel is arranged above the grounding pulley, the nylon wire pressing wheel is axially connected on a wire pressing wheel frame, the wire pressing wheel frame is connected with the swing arm through an adjusting bolt, metal pressing sheets are symmetrically arranged on both sides of the wire pressing wheel frame, the metal pressing sheets are parallel to the radial plane of the nylon wire pressing wheel, and the metal pressing sheets are electrically connected with the grounding wire. The grounding pay-off pulley device can improve the defects of the prior art and improve the grounding stability of the wire on the grounding pay-off pulley.

The present application relates to the technical field of soft water, and provides a fixed disc for a water softener valve, a water softener valve, and a water softener. The water softener comprises the water softener valve, a resin assembly, and a brine draw and drain device. The water softener valve comprises a fixed disc; the fixed disc comprises a disc body and a partitioning structure; the partitioning structure is arranged in the disc body, and divides the radial plane of the disc body into at least one partition; and each partition is provided with a water passing hole. By means of the partitioning structure, the radial plane of the disc body is divided into at least one partition. The design of the fixed disc achieves a relatively simple structure, is conducive to manufacturing and machining, can improve the structural strength of the disc body, and reduces the risk of deformation and damage, thereby prolonging the service life of the fixed disc.

The present invention relates to a device (10) for applying a cosmetic stick, the device comprising: - a cup-shaped portion (30) including at least one lug (32); - a guide (14) including a slot (22, 24) through which the associated lug (32) of the cup-shaped portion (30) passes, the slot (22, 24) including an upper edge (26); - a sheath (40) including internally helical grooves (42, 44) for receiving the lug (32) of the cup-shaped portion (30); - the lug (32) having an upper flat region (90a); characterized in that the upper edge (26) of the slot (22, 24) is inclined relative to a radial plane.

Conventional torsion-springs store and release rotational-energy to apply torque for restoring components to a stable-equilibrium orientation but are often intricate to manufacture, fatigue-prone, bulky and unsuitable for complex torque-profiles. The present invention discloses a torsion-spring assembly comprising a pivot with an oval cross-section rigidly attached to a platform (1) and a lever-arm (6) with an integrated knuckle-eye (4,5). The pivot consists of circular and continuous non-circular semi-cylindrical sections (2) and (3), seamlessly joined along identical surfaces formed by splitting along respective diametral-planes, ensuring structural continuity. The knuckle-eye, featuring a complementary oval-hole, is mounted onto the pivot, enabling controlled rotation. The geometric-mismatch induces elastic-deformation in the knuckle-eye upon rotation (B), generating shear strain and stress, which produce a restoring-torque (T) opposing the rotation. This design enables compactness, precise torque control, reduced fatigue, simplified manufacturing, and adaptability for complex torque responses or multiple stable-equilibrium orientations.

The invention relates to a mechanism comprising: • an electric motor rotor comprising a rotor shaft extending along a first axis, and a circular structure arranged at one end of the rotor shaft in a plane perpendicular to the first axis, the circular structure comprising at least one rotor tooth and at least one electrical wire winding arranged around the at least one tooth; and • a ring attached to the circular structure so as to surround the circular structure, characterized in that the ring comprises a set of through holes, each through hole being arranged to intersect a radial plane containing the first axis and passing through the center of the electrical wire winding arranged around the at least one tooth, thereby creating circulation of cooling fluid through the winding.