Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D29/00—Details, component parts, or accessories
  • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
  • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
  • F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D25/00—Pumping installations or systems
  • F04D25/02—Units comprising pumps and their driving means
  • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K5/00—Casings; Enclosures; Supports
  • H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations

Definitions

• the present invention relates to the field of heating, ventilation and / or air conditioning devices for motor vehicles.
• the invention relates more particularly to an electric motor support for a fan.
• the invention also relates to a fan comprising such a motor support and a heating, ventilation and / or air conditioning installation comprising such a fan.
• a heating, ventilation and / or air conditioning installation which creates an air flow in the passenger compartment.
• Such an installation also makes it possible to manage the temperature and the distribution within the passenger compartment of the vehicles of the air flow created.
• a heating, ventilation and / or air conditioning installation comprises, among other things, a fan comprising a fan wheel driven in rotation by an electric motor.
• the electric motor is in particular electronically commutated, controlled by a power supply module.
• An electronically commutated electric motor or brushless direct current motor (also known by the English name of "brushless"), comprises a rotor and stator assembly, each of these components carrying electromagnetic elements including the interaction generates the displacement of the rotor relative to the stator, and further the displacement of the fan wheel.
• the electric motor is assembled in the heating, ventilation and / or air conditioning installation by means of a motor support which comprises an inner ring configured to accommodate the stator of the motor electric and an outer ring adapted to be fixed, directly or indirectly, to a structural element of the vehicle.
• a decoupling element is interposed between the inner ring and the outer ring.
• This decoupling element aims to limit, or even prevent, the transmission of vibrations and / or stresses generated due to the rotation of the electric motor, from the inner ring, to the outer ring. This reduces the transmission of vibrations to the heating, ventilation and / or air conditioning installation, which could be felt by the occupants of the vehicle.
• the decoupling element allows significant relative movement of the inner ring relative to the outer ring, especially in the event of vibration.
• This relative movement can in particular be directed in a radial direction, in the plane of the two rings.
• the repetition of shocks and vibrations can in the long run lead to the appearance of cracks in the decoupling element, or even to its rupture.
• Large temperature variations can also promote the breaking of the decoupling element.
• the fan wheel may then come into contact with the motor support or with the housing towards the heating, ventilation and / or air conditioning system, which generates significant noise and should be avoided.
• the aim of the present invention is to provide an engine support, in particular for a fan of a heating, ventilation and / or air conditioning installation of a motor vehicle, which is simple to produce and which does not present minus some of the disadvantages of prior art media.
• the invention relates to a motor support, in particular for a motor-fan unit of a fan of a heating, ventilation and / or air conditioning installation for a vehicle, comprising:
• the decoupling means forming at least one radial stop capable of limiting a radial relative movement, in a plane normal to the common axis of the two rings, of one of the two rings with respect to the other.
• the distance of a relative radial movement between the two rings is limited.
• the force in the event of a possible impact between the two rings is also reduced.
• the mechanical energy to be absorbed by the decoupling means is therefore reduced, and at the same time the reliability and the service life of the decoupling means are increased.
• the motor support comprises one or more of the following characteristics, taken alone or in combination:
• the at least one radial stop extends between the inner ring and the outer ring;
• the decoupling means comprises a ring made of elastic material, in particular a ring made of elastomeric material;
• the inner ring and / or the outer ring is / are covered with elastic material at least on their face oriented towards the other ring, the elastic material covering the inner ring and / or the outer ring preferably being integral with the ring of elastic material, if applicable;
• the at least one radial stop comprises at least one lug of the inner ring, the at least one lug of the inner ring projecting radially in the direction of the outer ring, the at least one lug of the inner ring being covered with elastic material, at least on its face oriented towards the outer ring;
• the at least one radial stop comprises at least one lug of the outer ring, the at least one lug of the outer ring projecting radially in the direction of the inner ring, the at least one lug of the outer ring being covered with elastic material, at least on its face facing the inner ring;
• each lug of the inner ring faces, in a radial direction, a lug of the outer ring, the distance between each lug of the inner ring, covered with elastic material, and the lug of the associated outer ring, covered with elastic material, preferably being between 2 mm and 4 mm;
• the decoupling means comprises a plurality of pads of elastomeric material, interposed between the inner ring and the outer ring, each pad having a substantially "H" shape, each pad preferably having a thickness measured in the direction of the common axis of the two rings, greater than or equal to 10 mm, more preferably greater than or equal to 14 mm, and less than or equal to 20 mm, more preferably less than or equal to 16 mm;
• each lug of the inner ring and / or each lug of the outer ring is located at one end of an arm with an "H" formed by a stud, a lug of the inner ring or a lug of the outer ring being preferably at each end of an arm an "H” formed by a stud;
• each stud is flush with at least one of the two rings, in the direction of the common axis of the two rings;
• the radial stop is flush with at least one of the two rings, in the direction of the common axis of the two rings;
• the motor support comprises at least one element for limiting the tilting of the inner ring relative to the outer ring, the element for limiting the tilting comprising a finger which protrudes from a first of the two rings and is housed in a housing formed in the second of the two rings, two axial stops being formed in the housing to limit the movement of the finger in the housing relative to the direction of the common axis of the two rings;
• the motor support comprises two studs arranged angularly, symmetrically on either side of each finger;
• the motor support comprises a plurality of fingers regularly distributed angularly around the common axis of the two rings;
• the ring of elastic material of the decoupling means is made of SEBS (polystyrene-b-poly (ethylene-butylene) -b-polystyrene) or silicone;
• the ring of elastic material of the decoupling means is molded onto the inner ring and the outer ring;
• the motor support further comprises a means for limiting, or even preventing, the relative rotation of the rings around the common axis of the two rings;
• the elastomeric material preferably being compressed between the finger and each of the two axial stops, the elastomeric material having more preferably a compression ratio greater than or equal to 5% and / or less than or equal to 15%, more preferably substantially equal to 10%;
• the motor support comprises the same thickness of elastomer between the finger and each of the two axial stops;
• the at least one axial stop extends in a direction substantially perpendicular to the direction of elongation of the finger
• the motor support comprises two axial stops projecting in the housing, arranged on either side of the finger, the two projecting axial stops facing each other;
• the elastic material is overmolded on two opposite faces of the finger; - the elastic material has a hardness of between 25 and 50 shore;
• the elastic material in contact between the finger and each of the two stops, is integral with the ring of elastomeric material
• the finger has an “H” cross section
• a fan in particular for a ventilation installation for a vehicle, comprising an electric motor, in particular a brushless electric motor, a fan wheel, driven in rotation by the electric motor, and a motor support as described above in all its combinations, the motor, in particular the stator of the motor, being fixed to the inner ring of the motor support.
• a heating, ventilation and / or air conditioning installation for a motor vehicle comprising a duct and a fan as described above, in all its combinations, suitable for putting in movement a flow of air in the duct.
• FIG. 1 is a schematic side view of an example of a fan for a heating, ventilation and / or air conditioning installation for a motor vehicle.
• FIG. 2 is a schematic perspective view of a subassembly of the fan of Figure 1, including a motor mount and a fan housing.
• FIG. 3 is a schematic perspective view of a sub-assembly of the engine support of Figure 2.
• FIG. 4 shows a detail of the sub-assembly of the engine support of FIG. 3.
• FIG. 5 is a schematic side view of a detail of the sub-assembly of Figure 3.
• FIG. 6 is a schematic side view of a variant of the detail of the sub-assembly of Figure 5.
• FIG. 1 schematically illustrates a side view of a fan 10 for a heating, ventilation and / or air conditioning installation for a motor vehicle.
• a heating, ventilation and / or air conditioning installation for a motor vehicle comprises an aeration circuit, a fan 10 to set the air in motion in the aeration circuit, and means for heating and / or means for cooling the flow of air set in motion by the fan device 10.
• the fan 10 essentially comprises a fan wheel 12 and an electric motor 14, here masked by a motor cover 16, to drive in rotation about its axis A, the fan wheel 12.
• the electric motor 14 is for example a brushless motor.
• the fan 10 also comprises a motor support 18 making it possible to assemble the electric motor 14 on a support.
• the electric motor 14 is connected to a deflector 20 of the motor support 18, the deflector 20 forming part of the aeration circuit of the heating, ventilation and / or air conditioning installation.
• the motor support 18 is described in more detail.
• the motor support 18 essentially comprises an inner ring 22, an outer ring 24 and a decoupling element 26 interposed between the inner ring 22 and the outer ring 24.
• the decoupling element 26 aims to limit the transmission of vibrations from one of the two rings 22, 24 to the other of the two rings 22, 24.
• the decoupling element 26 here forms a first decoupling means 28, intended to limit a relative movement of the two rings 22, 24 in a common plane P of extension of the two rings 22, 24.
• the common plane P d The extension of the two rings 22, 24 is here normal to the axis A of rotation of the fan wheel 12.
• the first decoupling means 28 comprises, in the example illustrated, an elastic ring 30.
• the elastic ring is here made of an elastomeric material.
• the elastomeric material is SEBS (polystyrene-b-poly (ethylene-butylene) -b-polystyrene).
• the elastic ring 30 can be made of silicone.
• the inner 24, outer 24 and elastic 30 rings are here coaxial, with a common axis, the axis of rotation A of the fan wheel 12.
• axis A the axis of rotation of the fan wheel A. It should be noted, however, that this axis A in fact corresponds to the axis of the inner ring 22, to the axis of the outer ring 24 and to the axis of the elastic ring 30 , especially.
• the elastic ring 30 is for example overmolded on the inner 22 and outer rings 24.
• the resilient ring 30 thus secures the inner 22 and outer 24 rings.
• the resilient ring 30 covers in particular here the radially inner surface of the outer ring 24 , oriented towards the inner ring 22, and the radially outer surface of the inner ring 22, oriented towards the outer ring 24.
• the first decoupling means 28 also comprises, in the example illustrated, a plurality of first elastic pads 32.
• the first studs 32 are here interposed between the inner ring 22 and the outer ring 24.
• Each first stud 32 here has an "H" section, the side arms of which are oriented in an orthoradial direction with respect to the axis A of rotation. of the fan wheel 12, and the core of which is oriented in a radial direction relative to the axis A of rotation of the fan wheel 12.
• each first stud 32 is flush with the inner ring 22 and / or the outer ring 24, in the direction of the axis A of rotation of the fan wheel 12. This avoids sharp edges in the decoupling element 26, which are liable to create the breaking points of the decoupling element 26.
• Each first pad 32 has for example a thickness, measured in the direction of the axis A of rotation of the fan wheel 12, greater than or equal to 10 mm, preferably greater than or equal to 14 mm, and / or less than or equal to 20 mm, preferably less than or equal to 16 mm.
• the first decoupling means 28 comprises six first elastic pads 32, associated in pairs of neighboring first pads 32.
• the three pairs of neighboring first pads 32 are regularly angularly distributed around the axis A of rotation of the fan wheel 12.
• the first pads 32 are for example made of elastomeric material.
• the elastomeric material is SEBS (polystyrene-b-poly (ethylene-butylene) -b-polystyrene).
• the elastic pads 32 can be made of silicone.
• the first pads 32 are integral with the elastic ring 30.
• the inner ring 22 is present on its radially outer surface has at least a first lug 22i, projecting towards the outer ring 24.
• the first lug 22i here has a parallelepipedal shape.
• the first lug 22i can extend over substantially the entire height of the inner ring 22, measured along the direction of the axis A of rotation of the fan wheel 12.
• the first lug 22i is here covered by the material forming the ring. elastic 30. In particular the face of the first lug 22i oriented towards the outer ring 24 is covered by the material forming the elastic ring 30.
• the first decoupling means 26 thus forms a first radial stop 25i suitable limiting a relative radial movement of the inner 22 and outer 24 rings relative to each other.
• the first radial stop 25i advantageously extends between the inner ring 22 and the outer ring 24, thus limiting the bulk, in particular axial, of the motor support 18.
• the first radial stop 25i is here flush with the inner ring 22, in the direction of the axis A of rotation of the fan wheel 12.
• the outer ring 24 has on its radially inner surface at least one second lug 24i, projecting towards the inner ring 24.
• the second lug 24i here has a parallelepipedal shape.
• the second lug 24i can extend over substantially the entire height of the outer ring 24, measured along the direction of the axis A of rotation of the fan wheel 12.
• the second lug 24i is here covered by the material forming the ring. elastic 30.
• the face of the second lug 24i oriented towards the inner ring 22 is covered by the material forming the elastic ring 30.
• the first decoupling means 26 thus forms a second radial stop 252 capable of limiting a relative radial movement of the inner rings 22 and external 24, relative to each other.
• the second radial stop 252 advantageously extends between the inner ring 22 and the outer ring 24, thus limiting the bulk, in particular axial, of the motor support 18.
• the second radial stop 252 is here flush with the outer ring 24, in the direction of the axis A of rotation of the fan wheel 12.
• the lugs 22i, 24i of the inner 22 and outer 24 rings are aligned two by two in a radial direction.
• the first and second stops 25i, 252 are aligned two by two, in a radial direction with respect to the axis A of rotation of the fan wheel 12. This makes it possible to further limit the clearance of the inner 22 and outer 24 rings. , one relative to the other, in a radial direction.
• the distance d separating a first stop 25i from the associated second stop 252, aligned with the first stop 25i in a radial direction is between 2 mm and 4 mm.
• the distance d between the two stops 25i, 252 is measured in a radial direction, in a plane normal to the direction of the axis A of rotation of the fan wheel 12.
• the lugs 22i, 24i are formed in the vicinity of the first elastic studs 32.
• each lug 22i, 24i is formed at one end of an arm of a first stud 32.
• a lug 22i, 24i is produced at each end of each arm of a first lug 32.
• the lugs 22i, 24i thus facilitate the overmolding of the first pads 32 on the inner 22 and outer 24 rings.
• each ring 22, 24 comprises in the example illustrated six lugs 22i, 24i each.
• the six lugs 22i, 24i of each ring 22, 24 are here associated by pair of neighboring lugs 22i, 24i, the three pairs of neighboring lugs 22i, 24i being regularly distributed angularly around the axis A of rotation of the wheel fan 12.
• the assembly formed by the inner 20 and outer 22 rings, and the decoupling element 26 is received in a cavity of the deflector 20.
• the inner ring 22 is made integral with the stator (here not visible) of the motor 14.
• the outer ring 24 is here fixed to the deflector 20.
• a layer of elastomeric material can be interposed between the outer ring 24 and the deflector 20.
• the inner ring 22 has a plurality of fingers 34.
• the fingers 34 extend radially outwardly, from the outer surface of the inner ring 22.
• each finger 34 has an "H" section, comprising two arms 34i, 342 substantially planar, connected to each other by a core 343.
• the arms 34i, 342 are here perpendicular to the direction of the axis A of rotation of the fan wheel 12.
• the thickness of each arm 34i, 342 and of the core 343 can be between 1 mm and 3 mm.
• the thickness of each arm 34i, 342 and of the core 343 may in particular be equal to 2 mm.
• the inner ring 22 has three fingers 34.
• the fingers 34 are preferably regularly distributed angularly around the axis A of rotation of the fan wheel 12.
• each finger 34 can be s' extend in a radial direction R relative to the axis A of rotation of the fan wheel 12 such that the plane formed by this radial direction R and comprising the axis A of rotation of the fan wheel 12 is a plane of symmetry two first pads 32 of a pair of first neighboring pads 32.
• two first neighboring pads 32 are arranged angularly, symmetrically on either side of an associated finger 34.
• the outer ring 24 for its part comprises a plurality of housings 36.
• Each housing 36 is adapted to receive a respective finger 34.
• the housings 36 thus open out at least on the radially inner surface of the outer ring 24.
• the housings 36 are through, opening on the radially inner surface of the outer ring 24 and on the radially outer surface of the ring. exterior 24.
• the housings 36 are preferably regularly distributed angularly around the axis A of rotation of the fan wheel 12.
• tilting is meant here any movement of one of the rings 22, 24 relative to to the other 22, 24, outside the common median plane P of the rings 22, 24, normal to the direction of the axis A of rotation of the fan wheel 12.
• the housings 36 have dimensions such that a clearance exists between the walls of each housing 36 and the finger 34 which is received therein.
• play exists in the orthoradial direction, allowing a priori a relative rotation of the inner ring 22 relative to the outer ring 24, around the axis A of rotation of the fan wheel 12.
• each housing 36 can be covered with elastomeric material.
• the elastomer layer 37 which covers the walls of each housing 28, in particular the side walls 36i, is integral with the elastic ring 30.
• the motor support 18 also comprises a second decoupling means 38, to limit a relative movement of the two rings 22, 24 in the direction of the axis A of rotation of the fan 12.
• this second decoupling means 38 comprises a plurality of second elastic studs 40, arranged axially between the inner ring 22 and the outer ring 24.
• axially is meant here that each second elastic stud 40 extends at least partially, preferably completely, between a part of the inner ring 22 and part of the outer ring 24, in the direction of the axis A of rotation of the fan wheel 12.
• the second pads 40 are each disposed between a finger 34 and a wall 362, 363 of the housing 36 in which the finger 34 is received.
• each second pad 40 is disposed between a flat surface of an arm 34i, 342 of a respective finger 34, and a wall 362, 363 of the housing 36, normal to the axis A of rotation of the fan wheel 12
• each finger 34 extends at least in part between a flat surface of an arm 34i, 342 of a finger 34 and a wall 362, 363 of the housing 36, normal to the axis A of rotation of the wheel. fan 12, in the direction of the axis A of rotation of the fan wheel 12.
• two second pads 40 are associated with each finger 34.
• two second pads 40 can be arranged on either side of the same finger 34, in the direction of the axis A of rotation of the wheel fan 12.
• each finger 34 may be between two second pads 40.
• the two second pads 40 associated with the same finger 34 can be identical to ensure a behavior of the motor support 18 substantially symmetrical, regardless of the direction of movement of one ring relative to the other, in the direction of the axis A of rotation of the fan wheel 12.
• each second pad 40 is in contact with, preferably is compressed between, a flat surface of an arm 34i, 342 of the finger 34, on the one hand, and a surface 362, 363 of the housing 36, normal to the axis A of rotation of the fan wheel 12, on the other hand. This limits the possible movement of the finger 34 in the housing 36, in the direction of the axis A of rotation of the fan wheel 12.
• each second pad 40 can have a compression ratio, axial, greater than or equal. at 5% and / or less than or equal to 25%, preferably substantially equal to 15%.
• the thickness of the second stud 40 measured in the direction of the axis A of rotation of the fan wheel 12, before fitting between the finger 34 and the wall 362, 363 of the housing 36, normal to the direction of the axis A of rotation of the fan wheel 12.
• the second pads 40 can be made of an elastomeric material.
• the elastomeric material forming the second pads 40 can be chosen as a function of its hardness. This elastomeric material may in particular have a hardness greater than or equal to 25 shore and less than or equal to 50 shore.
• the second studs 40 can be molded onto the fingers 34 of the inner ring 22 and / or on the walls 362, 363 of the housings 36 of the outer ring 24. In an embodiment appearing to be particularly advantageous, the second studs 40 are integral with the elastic ring 30 and the first pads 32, if applicable. This makes it considerably easier to mount the motor support 18.
• Figures 5 and 6 illustrate two examples of possible shapes of the second pads 40.
• each second pad 40 has a generally cylindrical shape, in that each second pad 40 has a constant cross section, each second pad 40 extending in a radial direction R with respect to the axis A of rotation of the fan wheel 12.
• each second pad 40 is here in the shape of an "H", such that each arm 40B of the "H” either in contact with a flat surface of an arm 34i, 342 of a finger 34, or with a wall 362, 363 of the housing 36, normal to the axis A of rotation of the fan wheel 12.
• each arm 40B of a second pad 40 is in contact with one of the two inner or outer rings 22. 24, respectively.
• a core 40A connects the two arms 40B of the section of each second pad 40.
• the core 40A here has a minimum thickness substantially equidistant from the two arms 40B, in the direction of the axis of rotation A of the wheel fan 12.
• the core 40A has a flared shape from its part corresponding to its minimum thickness towards each of the two arms 40B. The core 40A thus allows a certain flexibility of the second pad 40, which can thus be deformed.
• each second pad 40 still has a generally cylindrical shape, in that each second pad 40 has a constant cross section, each second pad extending in a radial direction R with respect to the axis A of rotation of the fan wheel 12.
• each second pad 40 has substantially the shape of two half-cylinders 42 joined by their cylindrical surfaces 42S. Like the second pad 40, each half-cylinder 42 extends parallel to the radial direction R. The two half-cylinders 42 thus extend in particular along parallel axes. Here, the axes along which the two half-cylinders 42 extend are perpendicular to the axis A of rotation of the fan wheel 12.
• the second pad 40 thus also has, in cross section, a minimum thickness substantially equidistant from the finger 34 and from the wall 362, 363 of the housing 36.
• this minimum thickness in section of the second pad 40 allows a certain flexibility of the stud 40, which can thus be deformed.
• the lateral ends 34L of the branches of the finger 34 are also covered by the second stud 40.
• the second stud 40 is thus kept in position on the finger. 34 partner.
• each pair of lugs is distributed over each of the inner and outer rings, around the common axis of the two inner and outer rings.
• this number of radial stops is not limiting.
• the engine support may in particular include two radial stops opposite relative to the center of the inner and outer rings, or three or more radial stops, preferably regularly distributed around the common axis of the inner and outer rings.
• the first decoupling means and the second decoupling means are independent.
• the first and second decoupling means can be formed by separate parts.
• the embodiment described above, in which the two decoupling means form one and the same part appears advantageous in that it facilitates the assembly of the motor support.
• the realization of the decoupling means in several parts makes it possible to use different materials for each of these decoupling means. This can in particular make it possible to choose a material better suited to each of these decoupling functions.
• the shape of the first and / or second studs may differ from the shapes described above, by way of example only.
• the shape of the first and / or second studs can in particular be chosen so as to ensure satisfactory mechanical strength of these studs, while allowing a certain decoupling between the inner and outer rings.
• the inner ring forms fingers received in housings formed in the outer ring.
• the reverse configuration can however be envisaged, according to which the outer ring has fingers oriented radially towards the inner ring and received in housings formed in this inner ring.
• Orthoradial stops can be provided, to limit or even prevent the relative rotation of the inner ring relative to the outer ring, around the axis of rotation of the fan wheel. These orthoradial stops can in particular be provided in the housings and cooperate with the finger which is received there. These orthoradial stops may be formed by pins attached to the ring forming the housings and extending into a housing, between the finger which is received therein, and the side walls of the housing. Other means can still be implemented to limit, or even prevent, the relative rotation of the rings around their common axis. Furthermore, instead of the second elastic pads, one or more axial stops can be provided to limit the axial movements of each finger in the associated housing.
• an axial stop may be provided on either side of each finger, in the direction of the common axis of the inner and outer rings.
• the axial stop (s) may / may project from the housing.
• Each axial stop may be formed by a pin attached to the ring forming the housing.
• the at least one axial stop may extend in a direction substantially perpendicular to the direction of elongation of the associated finger.
• Each axial stop may project into the housing. Resilient material can then be placed between the finger and each of the associated axial stops, in contact with the finger and the axial stop.
• the elastomeric material is then preferably compressed between the finger and each of the two axial stops, the elastomeric material for example still having a compression ratio greater than or equal to 5% and / or less than or equal to 15%, more preferably still substantially equal. at 10%.
• the motor support can include the same thickness of elastic material between the finger and each of the two axial stops.
• the elastic material can in particular be overmolded on two opposite faces of the finger.
• the elastic material can have a hardness between 25 and 50 shore.
• the elastic material in contact between the finger and each of the two stops may be integral with the elastic ring.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)
• Motor Or Generator Frames (AREA)
• Air-Conditioning For Vehicles (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=72178815

Family Applications (1)

Country Status (5)

Family Cites Families (8)

• 2020
  • 2020-06-10 FR FR2006087A patent/FR3111408B1/fr active Active
• 2021
  • 2021-06-03 WO PCT/EP2021/064913 patent/WO2021249863A1/fr unknown
  • 2021-06-03 US US18/001,292 patent/US20230250835A1/en active Pending
  • 2021-06-03 EP EP21731108.3A patent/EP4165756A1/de not_active Withdrawn
  • 2021-06-03 CN CN202180036420.3A patent/CN115668706A/zh active Pending

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