Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K11/00—Arrangement in connection with cooling of propulsion units
  • B60K11/08—Air inlets for cooling; Shutters or blinds therefor
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
  • E05F15/00—Power-operated mechanisms for wings
  • E05F15/40—Safety devices, e.g. detection of obstructions or end positions
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K11/00—Arrangement in connection with cooling of propulsion units
  • B60K11/08—Air inlets for cooling; Shutters or blinds therefor
  • B60K11/085—Air inlets for cooling; Shutters or blinds therefor with adjustable shutters or blinds
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
  • F01P7/00—Controlling of coolant flow
  • F01P7/02—Controlling of coolant flow the coolant being cooling-air
  • F01P7/10—Controlling of coolant flow the coolant being cooling-air by throttling amount of air flowing through liquid-to-air heat exchangers
  • F01P7/12—Controlling of coolant flow the coolant being cooling-air by throttling amount of air flowing through liquid-to-air heat exchangers by thermostatic control
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
  • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
  • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
  • F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
  • F03G7/065—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like using a shape memory element
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
  • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
  • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
  • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
  • F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
  • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
  • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
  • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
  • F24F13/15—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre with parallel simultaneously tiltable lamellae
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
  • B60Y2410/00—Constructional features of vehicle sub-units
  • B60Y2410/13—Materials or fluids with special properties
  • B60Y2410/136—Memory alloys
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2201/00—Constructional elements; Accessories therefor
  • E05Y2201/60—Suspension or transmission members; Accessories therefor
  • E05Y2201/622—Suspension or transmission members elements
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
  • E05Y2800/67—Materials; Strength alteration thereof
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
  • F01P2031/00—Fail safe
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
  • F01P2070/00—Details
  • F01P2070/02—Details using shape memory alloys
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
  • F01P7/00—Controlling of coolant flow
  • F01P7/02—Controlling of coolant flow the coolant being cooling-air
  • F01P7/10—Controlling of coolant flow the coolant being cooling-air by throttling amount of air flowing through liquid-to-air heat exchangers
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
  • Y02T10/00—Road transport of goods or passengers
  • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
  • Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses

Definitions

• the invention relates to a shutter control device especially for a motor vehicle comprising at least one flap and an actuator moving said at least one flap between a closed position and an open position.
• the invention also relates to a frame comprising such a device.
• the front faces of motor vehicles are generally composed of an air inlet or two air inlets, called high and low track, separated by a bumper beam. Behind this bumper beam is generally placed a heat exchange device of the motor vehicle, comprising one or more heat exchangers, such as for example those used for the air conditioning of the passenger compartment, to be traversed by an air flow introduced by the inlet or the air intakes at the front of the vehicle.
• a heat exchange device of the motor vehicle comprising one or more heat exchangers, such as for example those used for the air conditioning of the passenger compartment, to be traversed by an air flow introduced by the inlet or the air intakes at the front of the vehicle.
• At least one flap panel is also generally mounted in the vehicle air intakes.
• the flaps are for example formed of slats pivotally mounted on the panel, for example substantially transversely.
• the inclination of the flaps can be controlled by an actuator between a closed position, for example vertical, blocking the passage of air and several intermediate positions to an open position, for example horizontal, in which a flow of maximum air can flow.
• a closed position for example vertical
• an open position for example horizontal
• the flaps can be driven via a driver such as a control lever coupled to the actuator.
• the piloted flaps are therefore arranged in front of the heat exchange device, and are used to reduce the drag coefficient and to improve the performance of the heat exchange device.
• the flaps may become jammed in the closed position, which obstructs the passage of air towards the exchange device resulting in overheating of the engine.
• a member of shape memory material such as a wire of shape memory material, able to change state, is arranged to separate the flaps of the actuator when changing the 'state.
• the wire of shape memory material is arranged so as to urge the transmission element making it possible to transmit the movement of the actuator to the control lever of the flaps, in the event of failure of the actuator, so that it disengages itself from the control lever.
• the shutters can adopt an open position unlocking the air inlet, independently of the actuator. The air can thus exchange with the fluids circulating in the heat exchangers of the motor vehicle thus avoiding overheating of the engine and the emergency stop of the vehicle.
• the transmission element is arranged to transmit a rotational movement of the actuator to the control lever controlling the flaps.
• the wire of shape memory material is also rotatably mounted. Such a body of shape memory material may be electrically powered to change state.
• power cables make it possible to electrically connect the wire of shape memory material to a power source external to the control device.
• the various elements of the control device including the shape memory wire, are rotated by the actuator.
• the power cables of the shape memory wire also turn together with the control lever, the transmission element, and the shape memory wire during all the closing and closing cycles. opening of shutters. This force exerted on the power cables causes a risk of premature wear of these power cables.
• the present invention aims to at least partially solve the disadvantages of the prior art by providing a compact alternative to separate the shutters of the actuator in case of failure of the actuator, while making reliable the power supply of the actuator. organ of shape memory material.
• the subject of the invention is a control device, in particular for a motor vehicle, of at least one flap configured to be moved between an open position and a closed position by an actuator, said device comprising at least one member made of shape memory material configured to be electrically energized to deform between a first state and a second state to disengage said at least one actuator G flap in the event of a G actuator failure.
• said device comprises a track carrier, for example mounted in said device being retained in rotation, and having at least two conductive tracks for electrically supplying said at least one member of shape memory material, and said least one member of shape memory material comprises at least two contact elements configured to be each arranged in electrical contact with an associated conductive track at least when said at least one member of shape memory material is in the first state.
• Such a support tracks remains rotated during the various cycles of opening and closing flaps.
• the power supply is provided by the contact between the contacting elements of said at least one member of shape memory material with the conductive tracks. There is therefore more power cables arriving to the body of shape memory material may be rotated during the various opening and closing shutter cycles.
• said device comprises said at least one flap configured to be moved between an open position and a closed position by G actuator.
• said at least one member of shape memory material is rotatably mounted relative to the support of tracks around a drive axis.
• a rotary contactor is thus produced for supplying the organ with shape memory material.
• the contactor elements are movable relative to the track support.
• the device may further include one or more of the following features, taken separately or in combination:
• said at least one member of shape memory material is configured to switch from a compressed idle state to a relaxed state when powered;
• said at least two conductive tracks of said carrier are separated by a non-conductive track
• said contacting elements are configured so that at the end of travel of said at least one member of shape memory material deforming between the first state and the second state when it is electrically powered, at least one of said contact elements is moved so as to come into mechanical contact with the non-conductive track;
• the support has a generally annular shape centered on the drive axis and having a predefined radial size
• said at least two contacting elements are arranged with a smaller radial size or of the same order as the radial size of the track carrier; the contacting elements are made by rubbers;
• the contacting elements are each arranged in electrical contact with an associated conductive track, regardless of the state of said at least one member of shape memory material;
• the contact elements are at least partially flexible
• the conductive tracks are on one side of the track support arranged facing said at least one member of shape memory material;
• the track support comprises at least one electrical connector for feeding the conductive tracks, arranged on the opposite side to the conductive tracks;
• said device comprises a drive shaft configured to be arranged to transmit a movement of the actuator to said at least one flap;
• the drive shaft comprises a receiving cavity of said at least one member of shape memory material
• said device comprises a driver configured to be coupled to said at least one flap
• said device comprises a transmission element rotatably coupled to the drive shaft and movably mounted between an engaged position in which it is rotatably coupled to the driver, and a disengaged position in which it is decoupled from the driver;
• said at least one member of shape memory material is configured to bias the transmission member to the disengaged position in the event of a failure of the actuator
• the drive shaft is configured to be rotated about a drive axis by the actuator
• the transmission element is axially movable between the engaged and disengaged positions
• the coach comprises a housing in which the drive shaft and the transmission element are arranged at least partially;
• the track support is assembled to the coach so as to close the housing
• the track support is formed by a cover of the coach
• the transmission element is arranged around an end portion of the drive shaft having the receiving cavity of said at least one member of shape memory material;
• the transmission element comprises a main body arranged around the portion end of the drive shaft and an end wall arranged opposite the end portion of the drive shaft;
• the end wall is formed on a closure cap assembled to the main body
• the end wall of the transmission element comprises at least two openings for the passage of the contact elements of said at least one member of shape memory material
• said device comprises at least one seal arranged in interface between the trainer and the track carrier;
• said device comprises at least one seal arranged in interface between the trainer and the drive shaft;
• said at least one member of shape memory material comprises at least one spring
• said device comprises an elastic return element arranged to urge the transmission element towards the engaged position, so that said at least one member of shape memory material is configured to bias the transmission element towards the disengaged position against the force exerted by the elastic return element.
• the present invention also aims to at least partially solve the disadvantages of the prior art by providing a compact alternative to separate the flaps of the actuator in case of failure of the actuator and move the control lever in a position flaps when released.
• the subject of the invention is a control device, in particular for a motor vehicle, of at least one flap configured to be moved between an open position and a closed position, said device comprising:
• a trainer configured to be coupled to said at least one flap and configured to be driven by an actuator to move said at least one flap and to be disengaged from the actuator G in the event of a failure of the actuator G, a drive shaft configured to be driven by the actuator, and
• a transmission element mounted movably between:
• said device comprises at least one elastic return member arranged so as to urge the trainer to move it, when it is disengaged from the drive shaft, in a predefined position, in which the driver is configured to maintain the at least one flap in the open position when the driver is coupled to the at least one flap.
• the return member is integrated in the control device. It is not an external element. In addition, this return member is arranged closer to the coach to act directly on the latter, and not for example on the shutters.
• said device comprises said at least one flap configured to be moved between an open position and a closed position.
• the transmission element is rotatably coupled to the drive shaft in the engaged and disengaged positions.
• the engaged position it is rotatably coupled to the driver, so as to transmit a movement of the drive shaft to the trainer.
• the disengaged position it is decoupled from the coach, so as to separate the coach from the drive shaft.
• the device may further include one or more of the following features, taken separately or in combination: G transmission element is distinct from the coach;
• said at least one elastic return member is in the form of a return spring
• said at least one elastic return member is a torsion spring
• said at least one elastic return member is fixed on the one hand to the driver and on the other hand to a fixed element of said device;
• said device comprises a base arranged fixed in said device
• said at least one elastic return member is fixed on the one hand to the driver and on the other hand to the base;
• the base has an internal space for receiving a portion of complementary shape of the trainer
• said at least one elastic return member is arranged between the driver and an inner wall of the base;
• the portion of the trainer received in the base is of tubular general shape; said at least one elastic return member is arranged around the portion of the trainer received in the base;
• the driver has a holding member of one end of the return spring
• the base has another element holding the other end of the return spring
• the base has a slot for holding one of the ends of the return spring
• the drive shaft is configured to be rotated about a drive axis by the actuator
• the transmission element is axially movable between the engaged and disengaged positions
• the coach comprises a housing in which the drive shaft and the transmission element are arranged at least partially;
• said device comprises at least one member of shape memory material configured to deform between a first state and a second state, and arranged to in such a way as to urge the transmission element to disengage it from the driver in the event of a failure of the actuator;
• the shape memory material member comprises at least one spring
• the shape memory material member is configured to bias the transmission member to the disengaged position in the event of a failure of the actuator
• the drive shaft comprises a receiving cavity of said at least one member of shape memory material
• said device comprises another elastic return member arranged to urge the transmission element towards the engaged position, so that the shape memory material member is configured to bias the transmission element towards the disengaged position at against the force exerted by the elastic return member.
• the present invention also aims to at least partially solve the disadvantages of the prior art by proposing a drive shaft alternative, to obtain a compact flap control device to separate the shutters of the actuator. case of failure of the actuator, and whose cooperation with one or more other elements of such a flap control device such as the control lever is improved.
• the invention also relates to a drive shaft for a control device, particularly for a motor vehicle, at least one flap configured to be moved between an open position and a closed position by an actuator, said device comprising a configured driver. to be coupled to said at least one flap, the drive shaft being configured to transmit a torque of G actuator to the trainer.
• the drive shaft comprises at least one locking element in translation of the driver.
• Such a drive shaft when arranged in a corresponding flap control device, allows, in addition to its torque transmission function of an actuator to the coach for moving the flaps, to maintain axially this coach.
• the drive shaft may further include one or more of the following features, taken separately or in combination:
• said at least one locking element comprises a peripheral groove configured to cooperate with at least one complementary locking element carried by the trainer;
• the drive shaft comprises a portion configured to be received in the trainer and to cooperate with the trainer, so as to guide the coach in rotation;
• said at least one locking member is provided on the portion of the drive shaft configured to be received in the driver;
• the drive shaft comprises at least one means for rotating a transmission element of said device
• the drive shaft comprises a first portion configured to be driven by the actuator
• the drive shaft comprises a second portion configured to rotate a transmission member of said device, the transmission member being configured to be arranged in at least one position in which it is rotatably coupled to the driver;
• the portion of the drive shaft configured to be received in the driver and to cooperate with the driver, is a junction portion between the first and second portions of the drive shaft;
• the transmission element is configured to be movable in translation between an engaged position in which it is rotatably coupled to the driver, and a disengaged position in which it is decoupled from the driver;
• the translation locking element is arranged on a junction part between the first and second parts of the drive shaft;
• the second portion of the drive shaft has a generally elongate sectional shape and is configured to be received in a recess of generally elongated shape complementary to the transmission element;
• the second portion of the drive shaft is of generally oblong shape and is configured to be received in a generally oblong housing of the transmission member;
• the second part of the drive shaft has at least one flat
• the second part of the drive shaft has at least two opposite flats
• the flats are at the long sides of the elongate shape of the second part of the drive shaft;
• the drive shaft has a cavity configured to at least partially receive a shape memory material member configured to bias the transmission member;
• said at least one member of shape memory material is configured to deform between a first state and a second state
• said shape memory material member is configured to be arranged in the cavity so as to bias the transmission member to disengage it from the driver in the event of a failure of the actuator;
• the cavity is of a general shape complementary to the shape of the organ made of shape memory material
• the cavity has a contour of general shape substantially in "eight"
• the cavity is formed at the second part of the drive shaft intended to cooperate with the transmission element
• the drive shaft comprises a peripheral groove configured to receive a seal intended to be positioned in interface with the driver.
• the invention also relates to a corresponding control device comprising such a drive shaft.
• the invention also relates to a frame comprising at least one flap configured to be moved between an open position and a closed position and a device for controlling said at least one flap as defined above.
• the track support is mounted on the frame while being held in rotation.
• the track support comprises an indexing member with at least one flat received in a housing complementary to the frame.
• FIG. 1 represents a perspective view of a frame comprising a shutter control device
• FIG. 2 shows, on the side, the shutter control device and an actuator
• FIG. 3a is an exploded view of a clutch and disengagement mechanism of the device of FIG. 2,
• FIG. 3b is an assembled view of the clutch and disengagement mechanism of FIG. 3a;
• FIG. 4 shows a member of shape memory material of the mechanism of FIG. 3a
• FIG. 5 shows the shape memory material member of FIG. 4 connected to an associated track support
• FIG. 6 shows an exemplary embodiment of conductive tracks
• FIG. 7a is an exploded view of a drive shaft and a transmission element body complementary to the mechanism of FIG. 3a;
• FIG. 7b shows the elements of FIG. 7a and an elastic return element before assembly
• FIG. 7c shows the elements of FIG. 7b assembled and the organ made of shape memory material of FIG. 4 before assembly
• FIG. 7d shows the elements of FIG. 7c assembled
• FIG. 7e shows the elements of FIG. 7d and a cover of the transmission element before assembly
• FIG. 7f shows the elements of FIG. 7e assembled
• FIG. 8a is a partially sectional view showing the mechanism of FIG. 2 assembled with the transmission element in an engaged position
• FIG. 8b is another sectional view showing the mechanism of FIG. 2 assembled with the transmission element in an engaged position
• FIG. 8c is a partially sectional view showing the mechanism of FIG. 2 assembled with the transmission element in a disengaged position
• FIG. 9 is a view of a trainer of the mechanism of FIG. 2,
• FIG. 10a shows the elements of FIG. 7f before assembly in the trainer
• FIG. 10b shows the elements of FIG. 10a after assembly
• FIG. 11 is a perspective view of a trainer of the mechanism of FIG. 3a
• FIG. 12 shows the mechanism of FIG. 3a assembled on the frame
• FIG. 13a is an exploded view of a base and a return member of the mechanism of FIG. 3a;
• FIG. 13b is a view from above of the elements of FIG. 13a assembled
• FIG. 13c shows the elements of FIG. 13a assembled and the driver before assembly
• FIG. 13d shows, before assembly, the elements of FIG. 13b assembled together and, on the other hand, the trainer receiving the drive shaft and the closing cap,
• FIG. 14 is a view from above of the assembled base and the trainer.
• FIG. 15 is a perspective view of the mechanism of FIG. 3a.
• the horizontal plane is designated by a reference (X, Y) and the vertical direction by the Z direction, the three directions forming a trihedron (X, Y, Z).
• axes can correspond to the denomination of the axes in a motor vehicle, that is to say by convention, in a vehicle, the axis X corresponds to the longitudinal axis of the vehicle, the axis Y corresponds to the axis transverse of the vehicle and the axis Z to the vertical axis according to the height of the vehicle.
• a motor vehicle comprises one or more air inlets arranged at the front of the motor vehicle.
• the term "front” is hereby designated with reference to the direction of travel of the motor vehicle.
• the invention relates to a device 1 for controlling one or more shutters 3, in particular for a motor vehicle.
• the control device 1 is intended to be arranged at an air intake of the motor vehicle.
• a heat exchange device (not shown) of the motor vehicle to be traversed by a flow of air introduced by the inlet or the air inlets to the before the vehicle.
• the control device 1 may comprise at least one flap 3 movable between an open position and a closed position. These are extreme positions, or flaps 3 can take intermediate positions between these two open and closed positions.
• an actuator 7 (partially visible in FIG. 2) is provided for moving the shutter or flaps 3 between the open and closed positions.
• the actuator 7 may or may not be integral with the flap control device 1.
• the control of G actuator 7 can be pneumatic, electrical or mechanical.
• the air inlet when the flaps 3 are in the open position and in the mounted state on the vehicle, the air inlet is disengaged.
• the shutters 3 When the shutters 3 are in the closed position (not shown), the air inlet is obstructed.
• the shutter (s) 3 is (are) for example mobile (s) in rotation.
• the flaps 3 in case of a plurality of flaps 3, can be movable in a same rotary motion defined around a drive axis or axis of rotation represented by the axis A.
• the rotation of the flaps 3 can in both directions about the axis of rotation A.
• the axis of rotation A is in the illustrated example parallel to the transverse axis Y. According to an alternative not shown, it can provide a movement of the shutter or shutters 3 between the open and closed positions, for example by translation.
• control flaps 3 can be connected by a connecting member 4.
• the connecting member 4 is configured to move, for example in translation, and moving it can cause the simultaneous pivoting of all the shutters 3.
• the connecting member 4 is configured to move in translation along an axis B.
• the translation axis B is, for example, parallel to the vertical axis Z. link 4 can be driven in both directions, either here downwards or upwards along the vertical axis Z.
• This control device 1 is according to the illustrated example mounted on a frame 5.
• the frame 5 may correspond to a frame with two longitudinal sides 51 and two lateral sides (not visible in the figures) for a given thickness.
• the longitudinal sides 51 of the frame 5 extend here along the transverse axis Y and the lateral sides along the vertical axis Z.
• the frame 5 has a generally rectangular general shape with two long longitudinal sides 51 and two small sides. Any other form of the frame 5 may be envisaged, the invention being not limited to the shape of the frame 5.
• control device 1 in the event of an anomaly, for example following a failure of the actuator 7, the control device 1 comprises one or more elements making it possible to separate the flap (s) 3 from the actuator 7. .
• control device 1 comprises at least one member of shape-memory material 8 (more particularly visible in FIG. 3a).
• the shape memory material member 8 is configured to be electrically powered to deform between a first state and a second state. This change of state can occur in case of failure of the actuator 7.
• the shape memory material member 8 is adapted to be connected to a power source (not shown).
• the body of shape memory material 8 is configured to change state in the event of failure of the actuator 7. This body of shape memory material 8 is arranged so as to disengage the shutter or shutters 3 of the actuator 7 when it passes from one state to another, in particular from the first to the second state.
• the shape memory material member 8 can move from a compressed or retracted state to a relaxed state and vice versa.
• the body of shape memory material 8 can, when compressed, relax or lengthen a predefined distance.
• the body of shape memory material 8 can return to the initial state or rest, for example in the compressed state.
• the shape memory material member 8 could be permanently powered during operation without abnormality. In this case, the power supply of the shape memory material member 8 is stopped in the event of a failure of the actuator 7. It would be possible to combine the power supply of the shape memory material member 8 and alternatively, supplying the actuator 7 with a shape memory material 8 may be independent of that of the actuator 7.
• the body of shape memory material 8 may, on the other hand, be powered in the event of failure of the actuator 7. In this case, in normal operation without any abnormality, the body of shape memory material 8 is not powered.
• the body of shape memory material 8 when it is powered, the body of shape memory material 8 is in its compressed form and that, when it is no longer supplied with current, it returns to its relaxed form in the state of rest. and resumes its original length. Or conversely, it can be expected that, when powered, the body material to shape memory 8 is in its relaxed form and when it is no longer supplied with current it finds its compressed form in the idle state. This is the preferred embodiment variant.
• the body of shape memory material 8 may comprise at least one spring.
• the body of shape memory material 8 may comprise two springs 81, for example helical, joining by an end 83.
• the two springs 81 have an end 83 common.
• the free ends 85 of the two springs 81 that is to say the side opposite the common end 83, can be configured to be connected to the power source (not shown).
• the embodiment of the shape memory material member 8 is not limited to this particular example. Any other shape of the shape memory material member 8 may be considered. By way of example, provision may be made for a wire of shape memory material, which may be substantially straight or may present at least on one section a curved or spiral shape.
• the control device 1 further comprises one or more electrical connection means for connecting the shape memory material member 8 to the power supply source (not shown).
• the control device 1 comprises a support 10 tracks, better visible in Figure 5.
• the support 10 tracks is mounted in the control device 1 being held in rotation or indexed in rotation.
• the support 10 tracks can be mounted on the frame 5 (not visible in Figure 5), so as to be locked in rotation.
• the frame 5 may have a support bearing which is fixed the support 10 tracks by any appropriate means.
• the cover 10 may have an indexing member 100 with at least one flat part 102 (see FIG. 3b).
• the indexing member 100 is configured to be received in a housing of complementary shape on the frame 5 (not visible in the figure 3b) allowing in particular a translation of the support 10 of tracks with respect to the frame 5 for the assembly and preventing the support 10 of tracks from being mobile in rotation with respect to the frame 5.
• the support 10 has at least two conductive tracks 101 for electrically feeding the shape memory material member 8.
• two conductive tracks 101 are provided, a track for the positive pole and a track for the negative pole.
• the conductive tracks 101 may, for example, be electrically powered in the event of a failure of the actuator 7. When the actuator 7 is disengaged from the flaps 3, the electrical power supply of the conductive tracks 101 may be cut off.
• the conductive tracks 101 are for example made of brass.
• the conductive tracks 101 are on one side of the support 10 tracks arranged facing the body of shape memory material 8 in the assembled state of the device 1 control.
• the conductive tracks 101 may be overmolded on the support 10 of tracks.
• the conductive tracks 101 may be arranged concentrically with respect to a central axis. According to the illustrated embodiment, this central axis coincides with the drive axis A.
• a gap or gap may be provided between the two tracks 101.
• the conductive tracks 101 are separated by a non-conductive track 101 '.
• the conductive tracks 101 each have, for example, a connection terminal 103 (see FIG. 6). Each connection terminal 103 protrudes from the corresponding conductive track 101. In the illustrated example allowing in particular to obtain a compact control device, the connection terminals 103 can be bent.
• the shape memory material member 8 comprises at least two contactor elements 87 configured to each come into electrical contact with an associated conductive track 101, at least under certain conditions. , for example at least when the organ in shape memory material 8 is in the first state, in this example in the idle state.
• a shoe 87 is connected to the end 85 of each spring or winding 81, which is opposite to the common end 83.
• the wiper 87 is connected at least electrically to the end 85 of the spring 81.
• control device 1 comprises a connection interface between the shape memory material member 8 and the one or more rubbers 87.
• a plate 88 from which extends the wiper 87 This is for example a plate 88 flat or substantially flat.
• Each plate 88 may have a sheath 89 for receiving the end 85 of the spring 81 corresponding.
• the shape of the sheath 89 is adapted to the shape of the end 85 of the spring 81.
• any other shape may be envisaged to receive one end of the shape memory material member 8.
• the rubbers 87 may each have a tab 871 extending from the plate 88 and terminated by an end 872.
• the tabs 871 are for example configured to extend in a direction inclined relative to the general plane defined by the plate 88, when the body of shape memory material 8 is in the idle state, namely with the compressed springs 81.
• the extension direction of the tabs 871 is also inclined with respect to the drive axis A.
• the rubbers 87 are movable relative to the support 10 of tracks. In other words, the rubbers 87 can move from one position to another relative to the track carrier when the shape memory material member 8 changes state.
• the rubbers 87 are at least partially flexible. More specifically, at least the tabs 871 are flexible.
• the shape memory material member 8 and the track support 10 may be arranged such that the ends 872 of the wipers 87 are in electrical contact with the conductive tracks. 101.
• the plates 88 are close to the support 10 of tracks or substantially align with the ends 872, conversely when the springs 81 are compressed again, the plates 88 away from the support 10 tracks.
• the angle of inclination of the tabs 871 relative to the plates 88 decreases when the springs 81 are relaxed, thus approaching the support 10 tracks, and conversely increases when the springs 81 compress again in s away from the support 10 of tracks.
• hoses is meant that the rubbers 87, in particular their tongues 871, can undergo a predetermined force, here a bending, because of the change of state of the body of shape memory material 8 so as to pass from one position to another without breaking.
• the travel range of the contactor elements 87 between the two positions is of the order of the displacement interval of the member of shape memory material 8 between its two states.
• the rubbers 87 thus remain in abutment against the conductive tracks 101 to ensure good electrical contact with them, regardless of the axial position of the shape memory material member 8, in particular the springs 81, with respect to the support 10 of FIG. tracks.
• the body of shape memory material 8 is mounted in an assembly movable in rotation around the drive axis A, while the support 10 of tracks remains rotated. .
• the wipers 87 rotate around the driving axis A following the complementary circular shape of the conductive tracks 101.
• a rotary switch is thus formed for supplying the shape-memory material member 8 with power.
• the wipers 87 can bear against the conductive tracks 101, whatever the angular position of the organ of shape memory material 8 with respect to the support 10 of tracks.
• the shape memory material member 8 is powered, in the event of a failure of the actuator 7 by for example, the electrical contact is ensured between the rubbers 87 and the conductive tracks 101, whatever the angular position of the shape memory material member 8.
• the wipers 87 are not configured to be arranged continuously in contact with the conductive tracks 101.
• the wipers 87 may be configured and / or dimensioned so that at the end of the race of the material member. with shape memory 8, when the latter expands, at least one of the rubbers 87 or the two rubbers 87 out of the conductive tracks 101. It is possible in particular to play on the outside diameter of the inner conductive track 101 and / or to adapt the sizing of one or both rubbers 87.
• the body of shape memory material 8 when the body of shape memory material 8 is not powered, it is in its compressed form and the wipers 87 are in contact with the conductive tracks 101.
• the body of shape memory material 8 In case of failure of the actuator 7, the body of shape memory material 8 is fed and deformed between the first state and the second state, that is to say according to the described example relaxes. By relaxing, the body of shape memory material 8 participates in the separation of the shutters 3 of the actuator 7 as described in more detail below.
• the plates 88 are close to the support 10 of tracks. The relaxation of the body of continuous shape memory material, crushing the rubbers 87 against the support 10 tracks.
• the ends 872 are located then in the space between the tracks 101, that is to say on the non-conductive track 101 '.
• the contactor elements 87 are then in mechanical contact with the non-conductive intermediate track 101 'and without electrical contact (this configuration is not visible in FIG. 5).
• the output of the wipers 87 of the conductive tracks 101 then stops G power supply of the body of shape memory material 8. This makes it possible to perform an additional safety function.
• the body of shape memory material 8 cooling then tends to return to the state of rest, that is to say, to regain its compressed form.
• the actuator 7 is disengaged from the flaps 3, the tracks 101 are no longer supplied with current.
• the body of shape memory material 8 can return to the state of rest, that is to say in the example described compressed.
• the support 10 has, for example, a generally annular shape centered on the drive axis A.
• the support 10 of tracks delimits a certain radial space and the wipers 87 are arranged in the control device 1 without exceeding radially with respect to the space delimited by the support 10 of tracks.
• the rubbers 87 are arranged in the same radial space or with a smaller radial space than the support 10 tracks.
• the term "radial" is defined with respect to the drive axis A. The wipers 87 are thus in alignment with the track carrier 10.
• the track support 10 may further include at least one electrical connector 105.
• the electrical connector 105 is provided on the opposite side to the conductive tracks 101. It is for example overmolded on the support 10 tracks.
• the connection terminals 103 open into this electrical connector 105.
• the electrical connector 105 is intended to be connected to the power supply source (not shown) so as to allow power to the conductive tracks 101, for example when an electrical connector complementary (not shown) is inserted into the electrical connector 105.
• cables connected to the power supply source are connected to the support 10 tracks, for example welded to the conductive tracks 101.
• the track support 10 may also be shaped to receive a seal 31 (as described later). It can be for example like illustrated in Figure 8b of a groove 107 on a peripheral skirt of the support 10 tracks.
• the peripheral skirt of the support 10 extends in the direction of the transmission element 11 and the drive shaft 70 in the assembled state of the control device 1.
• the control device 1 may also include a drive shaft 70 (visible in FIG. 3a), arranged to transmit a movement of the actuator 7 to the shutters 3, also referring to FIG. 2.
• the control device 1 may also include in this example a driver 9 coupled to the flaps 3 and a transmission element 11 which can be coupled in rotation or disengaged from the driver 9. The separation occurs in the event of failure of the actuator 7 under the action of the organ made of shape memory material 8.
• the drive shaft 70 it is configured to be driven by the actuator 7.
• the drive shaft 70 can be driven in a rotational movement about the drive axis A.
• This drive shaft 70 may comprise at least one means for rotating the transmission element 11 of the control device 1.
• the drive shaft 70 comprises for example a first portion 71 configured to be driven by the actuator 7 (not visible in these figures) and a second portion 72 configured to cooperate with the transmission element 11.
• the first 71 and second 72 parts extend for example longitudinally along the drive axis A.
• the section of the first portion 71 may have, without limitation, a general shape of a star. According to the embodiment described, the second part 72 is configured to be received in the transmission element 11.
• the second portion 72 is configured to drive the transmission element 11 in rotation.
• the second portion 72 of the drive shaft 70 comprises the means for rotating the transmission element 11.
• portion 72 may have, without limitation, a generally elongated shape, such as a generally oblong shape.
• This second portion 72 furthermore has at least one flat surface 720.
• the second portion 72 has at least two opposing flat lands 720.
• the flats 720 are arranged at the long sides of the second portion 72 of the drive shaft 70
• the second portion 72 is configured to guide the movement of the transmission member 11 as will be described later.
• this second portion 72 may have on its outer contour, a peripheral groove 721 (best seen in Figure 7a).
• the drive shaft 70 further comprises a junction portion 73 between the first 71 and second 72 parts of the drive shaft 70.
• This junction portion 73 is shaped to be received in the coach 9, as schematized in Figures 8a to 8c.
• This joining portion 73 may serve as a guide surface in rotation of the driver 9.
• the drive shaft 70 comprises at least one locking element 731 in translation or axial locking of the driver 9.
• the drive shaft 70 may have a groove 731 device configured to cooperate with at least one element additional blocking carried by the driver 9.
• This peripheral groove 731 is for example at the junction portion 73. In this example, the groove 731 is closer to the first portion 71 than the second portion 72.
• the drive shaft 70 comprises a cavity 75 (see FIGS. 7a to 7c) for receiving the shape memory material member 8.
• the cavity 75 is formed at level of the second portion 72 of the drive shaft 70 intended to cooperate with the transmission element 11.
• This cavity 75 is of complementary shape to the shape of the body of shape memory material 8.
• the cavity 75 has a contour of general shape substantially in "eight" or peanut or nephroid. This shape "eight" or peanut is adapted to receive at least partially, or entirely, the two springs 81 joined described above.
• the plates 88, the sleeves 89 and the contactor elements 87 at the ends of the springs 81 may extend outside this cavity 75.
• the drive shaft 70 may further comprise a peripheral groove 77, as illustrated in the example of Figure 8b.
• This peripheral groove 77 may be on the junction portion 73, and is configured to receive a seal 33, as described later. It is in particular a seal 33 intended to be positioned in interface with the coach 9.
• coach 9 means any means or organ that makes it possible to transmit a movement to one or more shutters 3.
• the driver 9 is on the one hand coupled directly or indirectly to at least one flap 3 and is further configured to be driven by the actuator 7 via the d-shaft. With such an arrangement, the driver 9 can move the flap (s) 3 under the impulsion of the actuator 7.
• the driver 9 is, for example, formally coupled to at least one flap 3 or to the connecting member 4. Referring to the example of FIG. 2, the driver 9 can be coupled to the flaps 3 by through the connecting member 4. Thus, in operation, the actuator 7 controls the rotation of the driver 9 which causes the displacement of the connecting member 4 to which are connected the flaps 3 which are therefore driven to turn in turn.
• the shape of the driver 9 can be adapted according to the control device 1 in which it is implanted and the actuator 7. Referring to FIGS. 8a to 10b, the driver 9 comprises a main body 9a intended to be crossed by the tree 70.
• the main body 9a is for example of generally cylindrical shape.
• the driver 9 further comprises an arm 9b, better visible in Figures 3a, 3b and 10a, 10b, configured to be coupled to at least one flap 3 for example through the connecting member 4 (see figure 2).
• the arm 9b protrudes from a corner or side of the main body 9a.
• the arm 9b therefore extends eccentrically.
• the arm 9b can extend axially towards the flaps 3 or the connecting member 4 for example. This configuration is not limiting. This configuration is advantageous for example when the actuator 7 is intended to be placed on the side of the control device 1.
• the driver 9 may have a substantially fork-shaped extension intended to be connected to the flap (s) 3 or to the connecting member 4. Such a configuration may be advantageous when the actuator 7 is intended to be placed in the center of the control device 1.
• the driver 9 further comprises a portion 9c which extends from the main body 9a on the side opposite the arm 9b.
• This portion 9c is for example of generally tubular shape.
• the portion 9c extends for example centrally, from a face of the main body 9a.
• the portion 9c has a smaller diameter than the main body 9a.
• the driver 9 has a cavity defining a housing 91 in which the drive shaft 70, and the transmission member 11 are arranged at least partially.
• This cavity is provided in the main body 9a.
• This main body 9a may have a shoulder 93 serving as a bearing surface and abutment for the drive shaft 70, in particular the second portion 72 of the drive shaft 70.
• the first portion 71 of the drive shaft 70 may extend at least partly outside the driver 9 to come to assemble with the actuator 7, while the second and third parts 72, 73 can be housed inside the coach 9.
• a seal 31 can be arranged in interface between G 9, more particularly the main body 9a of the coach 9, and the track support 10. It is advantageously an O-ring capable of working in motion.
• the driver 9 may have a peripheral groove 90 intended to be arranged facing and to cooperate with the groove 107 on the peripheral skirt of the support 10 tracks to maintain the seal 31.
• a seal 33 may be arranged in interface between the driver 9 and the drive shaft 70, more particularly between the portion 9c of the driver 9 and the third portion 73 of the shaft. 70.
• This is advantageously an O-ring capable of working in motion.
• the driver 9 may have another peripheral groove 90 'intended to be arranged facing and cooperate with the peripheral groove 77 on the joining portion 73 to maintain the seal 33.
• the driver 9 furthermore has a plurality of alternating teeth 95 with a plurality of recesses 97. More generally, it is referred to as toothing.
• This toothing is formed on the inner surface of the main body 9a. More specifically, the toothing is provided to cooperate with the transmission element 11 (not visible in this figure) when it is received in the housing 91.
• the first teeth 95 do not extend over any the height of the main body 9a but only on a portion.
• the driver 9 may additionally have one or more locking members of the drive shaft 70. This is a translational lock. according to the drive axis A. These locking elements may be arranged at the portion 9c of the driver 9.
• the locking elements may be formed by locking tabs 98 configured to cooperate with the groove 731 on the driving shaft 70 (visible in FIGS. 7a to 7f).
• the locking tabs 98 end for example by hooks.
• an assembly is made by clipping or snapping between the driver 9 and the drive shaft 70.
• the portion 9c may have notches 99 which delimit the locking lugs 98.
• the trainer 9 is intended to be assembled to the track support 10 described above, as illustrated in FIGS. 8a to 8c.
• the control device 1 comprises complementary fixing means 13, such as clipping or latching means, carried on the one hand by the support 10 of tracks and on the other hand by the trainer 9. .
• the support 10 tracks is arranged opposite this housing 91, as shown schematically in Figures 8a to 8c.
• the track support 10 can be assembled to the driver 9 so as to close the housing 91 on one side, here on the opposite side to the first part 71 of the drive shaft 70.
• the support 10 tracks is therefore arranged on the side of the driver 9 opposite the actuator 7 (not visible in Figures 8a to 8c).
• the track support 10 can thus form a cover of the driver 9.
• the track support 10 can be assembled to the driver 9 by any appropriate fastening means, such as by clipping or snapping.
• the transmission member 11 can be made by a clutch bell.
• This transmission element 11 is arranged to couple in rotation the drive shaft 70 and the driver 9 in normal operation (FIGS. 8a, 8b), and to disengage from the driver 9 in the event of a failure of the drive.
• actuator 7 Figure 8c.
• normal operation is understood to mean a mode without abnormality, without failure of the actuator 7.
• the transmission element 11 is mounted to move between an engaged position (FIGS. 8a, 8b) and a disengaged position (FIG. 8c).
• the transmission element 11 is mounted axially movable, that is to say mobile in translation along the drive axis A.
• the transmission element 11 can transmit a movement of the drive shaft 70 to the driver 9.
• the transmission element 11 is coupled in rotation with the drive shaft. 70 and is rotatably coupled with the driver 9, thereby coupling the driver 9 and the actuator 7 via the drive shaft 70.
• the driver 9 can then drive one or more shutters 3.
• the transmission element 11 is disengaged from the driver 9.
• the transmission element 11 remains attached to the drive shaft 70 and is decoupled from the driver 9. The transmission element 11 thus makes it possible to separate the flaps 3 of the actuator 7 by disengaging from the driver 9.
• the body of shape memory material 8 is arranged to bias the transmission element 11 in case of failure of the actuator 7 to the disengaged position. More specifically, the body of shape memory material 8 axially urges the transmission element 11. In other words, when the actuator 7 is blocked due to a failure, the transmission element 11 can, under the effect of the biasing of the shape memory material member 8, being displaced in translation towards the disengaged position, independently of the drive shaft 70.
• the shape memory material member 8 (not visible in FIG. 8a) is compressed, it does not urge the transmission element 11 towards its disengaged position. Thus, the transmission element 11 remains in the engaged position, the transmission element 11 being coupled with the driver 9.
• the shape memory material member 8 exerts an axial stress on the transmission element 11 urging it towards the disengaged position (FIG. which causes the disengagement of the transmission element 11 and the driver 9 if they were secured to one another beforehand, or leaving the transmission element 11 in the disengaged position if the element of transmission 11 was already disconnected from coach 9.
• the transmission element 11 is placed around a portion of the drive shaft 70, namely in this example around of a portion end portion which corresponds to the second portion 72 of the drive shaft 70.
• This arrangement is formed by cooperation of shapes between the transmission element 11 and the second portion 72 of the drive shaft 70.
• the second portion 72 of the drive shaft 70 in particular the outer surface which faces the transmission element 11, is configured to guide the displacement in this example of the sliding of the transmission element. 11 around the second portion 72 between the engaged and disengaged positions. This is a linear guide.
• the transmission element 11 comprises a main body 15 which is arranged around the second portion 72 of the drive shaft 70.
• the transmission element 11 comprises a housing 150 (see FIGS. 7a to 7c) configured to receive the second portion 72 of the drive shaft 70.
• This housing 150 is provided in this example at the main body 15 of the transmission element 11.
• the housing 150 has a generally elongate shape complementary to the shape of the second portion 72 of the drive shaft 70.
• the second portion 72 of the drive shaft 70 is intended to be arranged in this housing 150 so that the flats 720 are arranged facing the long sides of the housing 150. This allows the sliding of the drive shaft 70 in the transmission element but blocks it in rotation. This makes it possible to transmit the torque of the actuator 7 to the driver 9 via the transmission element 11.
• the transmission element 11 may have at least one lateral opening 151, in this example two opposite lateral openings 151.
• the elongate shape, for example oblong, of the second portion 72 of the drive shaft 70 makes it possible to orient the arrangement of the latter in the housing 150 of the transmission element, so that the short side of the second portion 72 is positioned in front of a lateral opening 151 of the transmission element 11.
• each lateral opening 151 is aligns with the peripheral groove 721 of the drive shaft 70 (best seen in Figure 7a).
• the shape memory material member 8 is at least partly inside the main body 15.
• the springs 81 of the shape memory material member 8 are received in the second portion 72 of the drive shaft 70 while the plates 88, the sleeves 89 and the contact elements 87 extend beyond this second portion 72.
• the plates 88 and the sleeves 89 can be arranged in abutment against a complementary bearing surface provided for this purpose in the main body 15 of the transmission element 11. .
• the transmission element 11 further comprises an end wall arranged facing the end portion of the drive shaft 70, that is to say the second portion 72.
• FIGS. 7e and 7f provision can be made for a cover 17 for closing the transmission element 11, which is fixed on the main body 15.
• the assembly is done for example by form cooperation between the main body 15 and the cover 17 closing.
• complementary fastening means 19 (FIG. 7f) are provided, such as clipping means for example, carried on the one hand by the main body 15 and on the other hand by the cover 17 for closing.
• the end wall is formed on the cover 17 closing.
• the plates 88 and the sleeves 89 are disposed between the main body 15 and the closure cap 17.
• the arrangement of the closing cap 17 on the main body 15 makes it possible to sandwich the plates 88 and the sleeves 89 between the closure cap 17 and the main body 15.
• the end wall, here the cover 17 for closing the transmission element 11 comprises at least two openings 171 for the passage of the contact elements 87 of the body of shape memory material 8. This is a question of longitudinal openings 171 of complementary shapes to the contactor elements 87, in particular the tabs 871, of the body of shape-memory material 8. These openings 171 The end regions of the contactor elements 87, these end regions including the ends 872, can fit at least partly in the housings 173 when the springs 81 extend.
• the transmission element 11 that is to say the parts 15 and 17 are made in one piece.
• control device 1 further comprises at least one elastic return element 21.
• the elastic return element 21 is arranged to exert a return force urging the transmission element 11 to the engaged position ( Figure 8a). This allows coupling of the driver 9 and the actuator 7 under normal conditions of use, that is to say here in the absence of failure of the actuator 7.
• the solicitation of the actuator transmission element 11 is axially.
• the elastic return element 21 is arranged to bias the main body 15 of the transmission element 11.
• the elastic return element 21 can be made in the form of a clip intended to grip the drive shaft 70, here the second part 72, housed in the transmission element 11. while bearing against at least one surface of the transmission element 11.
• the resilient return element 21, for example in this form of clip, thus makes it possible to link the drive shaft 70 and the element transmission 11.
• the clip comprises a base 211 from which extend two tabs 213, in parallel or substantially parallel manner.
• the tabs 213 are curved when the clip is in the idle state (FIGS. 7b and 8a).
• the body of shape memory material 8 changes state and biases the transmission element 11 towards the disengaged position (FIG. 8c)
• the clip is compressed so that the tabs 213 extend substantially in the same direction. plan that the base 211 of the clip.
• the lateral opening 151 of the transmission element 11 allows the insertion of the elastic return element 21.
• the element of resilient return 21 for example in the form of clip, engages in part around the second portion 72 of the drive shaft 70.
• the tabs 213 of the clip are arranged in the peripheral groove 721 of the second portion 72 of the drive shaft 70.
• the height of the peripheral groove 721 is adapted to the curvature of the tabs 213 in this example.
• the base 211 of the clip bears against a surface delimiting a lateral opening 151 of the transmission element 11.
• the ends of the tabs 213 of the clip can bear against a surface delimiting a lateral opening. opposite side 151 of the transmission element 11.
• the transmission element 11 in particular the main body 15, can be coupled by form cooperation to coach 9 in normal operation.
• the transmission element 11 is configured to mesh with the driver 9 in normal operation.
• the transmission element 11 has a complementary toothing of the toothing of the driver 9. This toothing is provided on a face of the main body 15 arranged on the side of the driver 9.
• the toothing of the transmission element 11 is configured to cooperate with the toothing of the driver 9 so as to couple in rotation the driver 9 and the transmission element 11 in the engaged position.
• the toothing of the transmission element 11 comprises a plurality of alternating teeth 153 with a plurality of recesses 155.
• the teeth 153 of the transmission element 11 are configured to be interposed between the teeth 95 (not visible in FIG. 3a ) of the driver 9 so as to rotate the transmission element 11 and the driver 9 together.
• the separation between the flaps 3 and the actuator 7 by the separation between the transmission element 11 and the driver 9 can be reversible.
• the driver 9 and the transmission element 11 can return to the engaged position in which they are secured for example when the failure of the actuator 7 was only temporary, to return to a normal operating configuration without anomaly.
• the body of shape memory material 8 is mounted and held in a movable assembly about the drive axis A, relative to the support 10 of tracks which remains retained in rotation.
• This moving assembly is formed by the drive shaft 70 and the transmission element 11, more specifically, by the second portion 72 of the drive shaft 70, and the main body 15 and the closure cap 17 of the transmission element 11.
• This movable assembly is itself mounted in the coach 9 also movable ( Figures 8a to 8c and 10a, 10b).
• the actuator 7 causes the movement of the flaps 3, in this example via the control member. link 4 (FIGS. 1 and 2).
• the resilient biasing member 21 is in the idle state, and the shape memory material member 8 is not powered and is compressed.
• the rubbers 87 may be arranged in contact with the tracks 101 (see FIG. 5). As long as the organ of shape memory material 8 remains in the compressed state, the transmission element 11 is kept coupled with the driver 9 thanks to the restoring force exerted by the elastic return element 21.
• the actuator 7 (not visible in FIG. 8a) causes, under the effect of a control, the rotation of the drive shaft 70 rotatably coupled to the transmission element 11, the driver 9 being secured to the transmission element 11, it then adopts the same rotational movement.
• the connecting member 4 (see Figure 2) is in turn driven by the driver 9 and causes, here simultaneously, pivoting the flaps 3 to change position.
• the actuator 7 fails, such as for example when the actuator 7 is no longer supplied due to a short circuit or a cut of the electrical harness or further to a non-operation of the electrical control , or in the case of an internal breakage of an element of the actuator 7, the connecting member 4 and therefore the flaps 3 are separated from the drive shaft 70 and therefore from the actuator 7 ( with reference to Figures 2 and 3).
• the shape memory material member 8 can be electrically powered by intermediate G of the conductive tracks 101 of the track support 10 (see FIG. 5), and is deformed between the first state and the second state, that is, that is to say according to the example described it can relax or lengthen a distance sufficient to decouple the transmission element 11 and the driver 9.
• the body of shape memory material 8 by relaxing, the transmission element 11 which moves towards the disengaged position (FIG. 8c) is disengaged and thus disengages from the driver 9.
• the teeth respectively provided on the transmission element 11 and the driver 9 are disengaged from each other.
• the plates 88 come closer to the support 10 of tracks, advantageously until at the end of stroke of the member of shape memory material 8, the ends 872 out of the tracks 101 and come into mechanical contact with the non-conductive track 101 'and without electrical contact.
• the output of the wipers 87 of the tracks 101 then stops the power supply of the body of shape memory material 8.
• the wipers 87 are electrically powered only for the minimum necessary for the separation of the trainer 9 and the element transmission 11, that is to say long enough for the toothing of the transmission element 11 to disengage from that of the driver 9.
• the driver 9 disengages from the transmission element, itself coupled to the drive shaft 70 which is integral with the actuator 7.
• the trainer 9, once disconnected from the actuator 7, is free to rotate. It can then adopt a configuration in which the flaps 3 are in the open position allowing the air to pass through the frame 5.
• the change of position of the flaps 3 can be obtained in various ways.
• a return means such as a return spring arranged so as to urge the flaps 3 in the open position.
• the driver 9 remains in the open position of the shutters 3.
• the transmission element 11 can be secured again to the driver 9.
• the device 1 could then reposition in its initial configuration. Indeed, as soon as the actuator 7 resumes to move, the teeth 95 of the driver 9 are in front of the recesses 155 of the toothing on the transmission element 11.
• the device has the advantage, in a situation where the actuator 7 is faulty, allow to return to a configuration where the flaps 3 are in the open position without the need for intervention exterior.
• the toothing integrated in the main body 9a of the driver 9 can cooperate with the complementary toothing of the transmission element 11 and is part of the clutch and disengagement mechanism for coupling or disengaging the transmission element 11 and the driver 9 in case of failure of the actuator 7.
• the arrangement of the shape memory material member 8 axially biasing the transmission member 11 within the second portion 72 of the shaft drive 70, itself inside the transmission element 11 while allowing the guiding of this transmission element 11 between the engaged and disengaged positions, provides a certain compactness to said mechanism.
• the wipers 87 are electrically powered only the time required for the organ of shape memory material 8 to relax to separate the transmission element 11 of the trainer 9, thereby providing a measure of safety additional.
• the driver 9 has a holding member 94 ( Figure 11), such as a lug or holding hook, the resilient return member 23, as will be described in more detail later.
• the holding member 94 extends projecting from the face of the main body 9a from which extends the portion 9c for example tubular. This is a circular face in the example of the main body 9a cylindrical.
• the track support 10 is mounted by being held in rotation in the control device 1.
• the track support 10 can be mounted on the frame 5 (see FIG. 12) so as to be locked in rotation.
• the frame 5 may have a support bearing 53 to which is attached the support 10 tracks by any suitable means.
• the cover 10 may have an indexing member 100 with at least one flat part 102 (see FIG. 3b).
• the indexing member 100 is configured to be received in a housing of complementary shape on the frame 5 (not visible in FIG. 3b), in particular allowing translation of the support 10 of tracks with respect to the frame 5 for assembly and preventing the support 10 of tracks to be rotatable relative to the frame 5.
• the elastic return member 23 is arranged around the portion 9c, for example tubular of the driver 9.
• the elastic return member 23 may be embodied in the form of a return spring, such as a torsion spring, also referenced subsequently by 23.
• the two ends 231, 233 of the spring 23 may extend in the same direction or in two different directions. At least one end 233 of such a spring 23 may extend in a direction normal to the drive axis A.
• the directions of extension of the ends 231, 233 of the spring 23 are adapted as a function of the complementary holding elements provided on the one hand on the driver 9 and on the other hand on the fixed element of the control device 1.
• the holding member 94 such as a lug or retaining hook provided on the driver 9, maintains one of the ends 231 of such a spring 23 (see Figure 11).
• the control device 1 further comprises a base 25 arranged fixed in the device 1.
• the base 25 can be fixed on the frame 5 (see Figure 12).
• the frame 5 may comprise another support bearing 57 having an opening for the passage and fixing of the base 25.
• This support bearing 57 may extend parallel or almost parallel to the support bearing 53 for fixing of the support 10 of tracks.
• the elastic return member 23, visible by transparency in FIG. 12, is fixed on the one hand to the driver 9 and on the other hand to the base 25.
• the portion 9c of the driver 9 is received in the base 25 and the resilient return member 23 is arranged between 9 and an inner wall of the base 25. With such an arrangement, the elastic return member 23 is protected by the base 25.
• the driver 9 is assembled to the base 25 while remaining rotatable relative to the base 25 which remains fixed.
• the base 25, better visible in FIGS. 11a to 11d, has an internal space 250 for receiving the portion 9c of the driver 9.
• the internal space 250 of the base 25 is of complementary shape to the portion 9c. More generally, the base 25 may have a general shape complementary to the general shape of the driver 9.
• the base 25 comprises a main body 25a of generally cylindrical shape.
• the base 25 may comprise an attachment lug 25b which extends radially relative to the main body 25a.
• the driver 9 and the base 25 can be assembled so that the attachment lug 25b is in alignment 9 of the driver 9.
• a pin 27 can be inserted into corresponding openings in the attachment lug 25b and in the driver 9, to position and immobilize the driver 9 and the base 25 in this position of delivery.
• the only driver 9 can be assembled first to the base 25 (Figure 13c) before receiving in turn the drive shaft 70, the transmission element 11, the body of material to shape memory 8, or the support 10, not visible in Figure 13c.
• the base 25 also has at least one holding element, for example a holding slot 251, of one of the ends 233 of the return spring 23, as can be seen more clearly in FIG. 13b.
• the holding slot 251 is provided on the inner wall of the base 25 which defines the internal space 250 to receive the trainer 9.
• the holding slot 251 extends longitudinally parallel or almost parallel to the drive axis A.
• the holding slot 251 can extend over all or almost the entire height of the base 25 along the axis A. This facilitates the arrangement of the return spring 23 in the base 25 with the end 233 which is received in the slot 251.
• the base 25 may have a shoulder 253. This shoulder 253 may form a bearing surface for the return spring 23.
• the base 25 has a change in diameter.
• the base 25 may furthermore comprise at least one means for positioning the return spring 23. It is for example a boss 255 or several bosses 255 distributed on the inner surface of the base 25. The or each boss 255 extends radially over a distance that corresponds to the difference between the outer diameter of the return spring 23 and the inside diameter of the portion of the base 25 receiving the return spring 23. In the illustrated example, the s) boss (s) 255 does not extend (not) over the entire height of the base 25, along the drive axis A, but only on a portion.
• boss or bosses 25 extend from the shoulder 253 towards the main body 9a of the driver 9 (see FIGS. 11c, 11d) to the assembly.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Transportation (AREA)
• Transmission Devices (AREA)
• Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
• Power-Operated Mechanisms For Wings (AREA)

Applications Claiming Priority (4)

Publications (1)

Family

ID=65324398

Family Applications (1)

Country Status (4)

Families Citing this family (2)

Citations (3)

Family Cites Families (8)

• 2019
  • 2019-01-15 CN CN201980014511.XA patent/CN111741863A/zh active Pending
  • 2019-01-15 WO PCT/FR2019/050079 patent/WO2019141934A1/fr unknown
  • 2019-01-15 US US16/772,405 patent/US20210071460A1/en not_active Abandoned
  • 2019-01-15 EP EP19703777.3A patent/EP3707022A1/de not_active Withdrawn

Patent Citations (3)

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events