FR2972478A1 - Driving mechanism for opening and closing e.g. swimming pool shelter, has reducing unit whose clutch unit selectively couples and uncouples input and output shafts when input shaft is rotated and not rotated by motor, respectively - Google Patents

Abstract

The mechanism has a reversible reducing unit (230) comprising an input shaft (233) coupled with a motor (220), and output shafts (246, 246') that are coupled with a rotary element i.e. wheel. The reducing unit comprises a clutch unit to selectively couple the input shaft and the output shafts when the input shaft is rotated by the motor, and uncouple the input shaft and the output shafts when the input shaft is not rotated by the motor.

Description

FIELD OF THE INVENTION The invention relates to the field of motorized systems for training mobile structures, such as, for example, motorized systems for opening and closing gates or swimming pool shelters.

STATE OF THE ART Document FR 2 882 779 describes a device for opening and closing a movable structure with respect to a surface comprising at least two wheels intended to be brought into contact with the surface, a motor for driving in rotation the two wheels for moving the structure relative to the surface and a reversible reduction unit through which the motor is adapted to drive in rotation the two wheels.

Since the reduction unit is reversible, the mobile structure equipped with the device can be manipulated manually, which can be useful in cases where the motor can no longer be powered, because of, for example, a power failure or loss of power. 'failure. However, a manual manipulation of the structure can be difficult because the operator must exert on the structure a sufficient effort to drive the motor through the reducer, which then works as a multiplier.

SUMMARY OF THE INVENTION An object of the present invention is to provide a device for driving a mobile structure that can be manipulated more easily. This problem is solved in the context of the present invention by means of a drive device of a mobile structure, comprising at least one rotary element, a motor and a transmission assembly comprising an input shaft to which the motor is coupled and an output shaft to which the rotary member is coupled, characterized in that the transmission assembly also comprises a clutch means adapted to selectively couple the input shaft and the output shaft when the shaft of The inlet is rotated by the motor and uncoupling the input shaft and the output shaft when the input shaft is not rotated by the motor.

Thanks to the clutch means, the rotary element is coupled to the engine only when the engine is in operation. Thus, when the engine is not running, the device can be easily manipulated manually. The proposed device may furthermore have the following characteristics: the rotary element is a wheel suitable for being brought into contact with a surface for moving the mobile structure relative to the surface; the clutching means comprises at least one a flyweight displaceable under the effect of a centrifugal force generated by the rotation of the input shaft from a disengaged position in which the input shaft and the output shaft are uncoupled to a position engaged in which the input shaft and the output shaft are coupled, - the device comprises a return member for biasing the weight to the disengaged position, 20 - the clutch means comprises a stop piece on which the counterweight abuts for coupling the input shaft and the output shaft; the stop member is rotatably mounted about an axis of rotation and has an L shape having a branch extending in one direction; 25 radial with respect to the axis of rotation and a branch extending in an axial direction relative to the axis of rotation, the clutch means comprises a transmission element rotatably mounted about a parallel axis of rotation. to an axis of rotation of the input shaft, the transmission element comprising a housing 30 receiving the abutment piece, - the housing is a radial groove, - the device comprises two wheels, - the gear unit is adapted for driving the two wheels in rotation at different speeds, - the gear unit comprises an input shaft which is coupled to the motor and at least two rotary output shafts, each wheel 5 being mounted on a respective output shaft; the gear unit comprises a first intermediate shaft, first transmission members adapted to rotatably couple the input shaft and the first intermediate shaft, and second transmission members adapted to link in rotating the first intermediate shaft 10 with each of the output shafts, - the input shaft is rotatable about an axis of rotation substantially perpendicular to the axes of rotation of the output shafts and the gear unit comprises transmission members to bevel gear which rotatably couples the input shaft to the output shafts, - the output shafts are coaxial, - the gear unit comprises an outer casing and one of the output shafts is located at external of the outer casing, the gear unit comprises a second intermediate shaft extending at least partly inside the casing and comprising an end portion projecting outside the casing and in which the shaft outlet located outside the housing is hollow and rotatably mounted around the end portion protruding outside the housing, the reducing assembly comprises transmission members located outside the housing; housing and which rotatably couple the input shaft and the output shaft located outside the housing; - the transmission members located outside the housing comprise interengaging gears; transmission located outside the housing are chosen to rotate one of the wheels at a different speed relative to the other wheel, the motor comprises two outputs, each output being connected to a pair of wheels, the device comprises two reduction units, the motor being able to drive each pair of wheels through one of the reduction units.

PRESENTATION OF THE DRAWINGS Other characteristics and advantages will become apparent from the following description, which is purely illustrative and non-limiting and should be read with reference to the appended figures, in which: FIG. 1 schematically represents, in perspective, a 10 opening and closing gate device, according to a first embodiment of the invention, - Figures 2A, 2B and 3 show schematically, in exploded view, the various components of a reduction assembly of the FIG. 4 schematically represents a pivoting leaf gate equipped with an opening and closing device, according to the first embodiment of the invention, FIG. schematically, in perspective, a device for opening and closing swimming pool shelters, according to a second embodiment of the invention.

DETAILED DESCRIPTION FIGS. 1 to 3 show a gate opening and closing device according to the first embodiment of the invention. The device comprises a fixed part 100 intended to be fixed on a gate leaf or the like, and a movable part 200 mounted on the fixed part 100 and able to be displaced with respect to the fixed part 100. The movable part 200 includes a bar slider 210, a motor 220, a gear unit 230 and two wheels 261 and 262 of identical diameters.

Each wheel 261 and 262 has a generally cylindrical shape and is formed of zamak (zinc alloy and aluminum). Each wheel 261 and 262 comprises a respective surface or tread 2610 and 2620. The wheels 261 and 262 are disposed on either side of the gearbox 230 and are arranged side by side. The engine 220 is an electric motor having two outputs. This is for example a motor of the type conventionally used in motor vehicles for the automatic adjustment of the position of the seats.

The gear unit 230 is a reversible gear unit. The gear unit 230 comprises a housing 250 formed of two half-housings 251 and 252, an input shaft 233, a first adjusting ring 234, a first bevel gear 235, a second bevel gear 236, a first cylindrical gear 237, a second cylindrical gear 238, a third cylindrical gear 239, a fourth cylindrical gear 240, a first intermediate shaft 241, a fifth cylindrical gear 242, a sixth cylindrical gear 243, a seventh cylindrical gear 242 ', an eighth cylindrical gear 243 ', a second adjusting ring 244, a second intermediate shaft 245 and two output shafts 246, 246'.

The gear unit 230 further comprises a clutch means 270 arranged between the input shaft 233 (constituting the driving part) and the first bevel gear 235 (constituting the receiving part). Each half-housing 251, 252 has a fixing lug 231, 232 intended to be fixed on one face of the housing of the motor 220, so that when the two half-housing 251, 252 are assembled, the lugs 231 and 232 are extend on both sides of the motor to maintain the motor 220 on the gear unit 230. The two half-housings 251 and 252 support the intermediate shafts 241 and 245. The intermediate shafts 241 and 245 extend parallel to each other. to the other, in a general direction perpendicular to the input shaft 233. The intermediate shafts 241 and 245 are rotatably mounted relative to the two half-housings 251 and 252. Each of the intermediate shafts 241 and 245 has two portions. which end protrude outside the housing 250. The input shaft 233 is coupled to one of the outputs of the motor 220 and supports the first bevel gear 235.

The first intermediate shaft supports the sprockets 236, 237, 240, 242 and 242 '. The second intermediate shaft supports the pinions 238 and 239. The clutch means 270 are adapted to selectively engage the first bevel gear 235 with the input shaft 233 or release the first bevel gear 235 from the shaft. 233 so that the first bevel gear 235 is free to rotate about the input shaft 233. The first bevel gear 235 meshes with the second bevel gear 236, the second bevel gear being rotatably mounted relative to the first bevel gear 233. intermediate shaft 241 which carries it. The bevel gears 235 and 236 form a bevel gear. The bevel gears 235 and 236 thus make it possible to link the input shaft to the output shafts 246 and 246 ', the input shaft 233 being rotatable about an axis of rotation substantially perpendicular to the axes of rotation of the shafts. exit 246 and 246 '.

The second bevel gear 236 is rotatably mounted about the first intermediate shaft 241 and is integral with the first cylindrical gear 237, the first cylindrical gear 237 also being rotatably mounted about the first intermediate shaft 241. The first cylindrical gear 237 meshes with the second cylindrical gear 238. The second cylindrical gear 238 is rotatably mounted on the second intermediate shaft 245 which carries it. The second cylindrical gear 238 is integral with the third cylindrical gear 239 which is also rotatably mounted on the second intermediate shaft 245. The third cylindrical gear 239 meshes with the fourth cylindrical gear 240. The fourth cylindrical gear 240 is mounted integrally on the first intermediate shaft 241.

The wheel 261 is mounted integral with the first output shaft 246 while the wheel 262 is mounted integral with the second output shaft 246 '. The first and second output shafts 246 and 246 'are coaxial and located outside the housing 250. The first and second output shafts 246 and 246' are identical. They each have a generally cylindrical shape and are hollow. Each of the output shafts 246 and 246 'is rotatable about an end portion of the second intermediate shaft 245 projecting out of the housing 250.

Thus, the wheels 261 and 262 are movable about a common axis of rotation, which corresponds to the axis of the shaft 245. The first intermediate shaft 241 supports at each of its end portions the fifth cylindrical pinion 242 and the seventh cylindrical pinion 242 ', the pinions 242 and 242' being mounted integral with the intermediate shaft 241. The second intermediate shaft 245 supports at each of its end portions the sixth cylindrical pinion 243 and the eighth pinion cylindrical 243 ', the pinions 243 and 243' being rotatably mounted relative to the second intermediate shaft 245.

The first output shaft 246 is rotatably connected to the first intermediate shaft 241 via the pinions 242 and 243. The second output shaft 246 'is rotatably connected to the first intermediate shaft 241 via the pinions 242' and 243. The clutch means 270 comprises a plate 271 and a stop member 272 supported by the first input shaft 233. The plate 271 is rotated by the first input shaft 233. Specifically, the plate 271 is integrally mounted to the first input shaft 233. For this purpose, the plate 271 comprises a central orifice 2711 having a planar inner surface 2712, and the first input shaft 233 comprises a first shaft portion 2331 having an outer surface flat 2332 forming a flat. The first input shaft 233 is received in the central hole 2711 of the plate 271 so that the surfaces 2712 and 2332 come into contact with each other and immobilize the plate 271 in rotation with respect to the first shaft. 233 The tray 271 further comprises two housings 2713 and 2714 arranged at the periphery of the plate, in radially opposite positions, on either side of the central orifice 2711. The clutch means 270 further comprises two flyweights 273 and 274 and associated resilient return members 275 and 276. The weights 273 and 274 are adapted to be received respectively in the housings 2713 and 2714. Each weight 273, 274 comprises a head and a body. Each return member 275, 276 comprises a coil spring. Each helical spring is arranged around the body of a feeder, and extends between the head of the feeder and an inner wall of the housing 2713, 2714 receiving the weight. The stop piece 272 is rotatably mounted relative to the first input shaft 233. The stop piece 272 has a generally L-shaped shape having a first branch 2721 extending in a radial direction relative to the axis of rotation of the the abutment piece 272, a second branch 2722 extending in an axial direction relative to the axis of rotation, and a central orifice 2723 formed in the first branch 2722.

The first branch 2721 is received in a housing 2351 in the form of a radial groove 2351 formed in the first bevel gear 235, so that the abutment piece 272 is integral in rotation with the first bevel gear 235. The first shaft of FIG. Inlet 233 comprises a second shaft portion 2333 of cylindrical shape of revolution. The first input shaft 233 is received in the central hole 2723 of the abutment piece 272, so that the abutment piece 272 can freely rotate around the input shaft 233. The abutment piece is suitable for cooperating with the plate 271 to selectively engage or disengage the first input shaft 233 and the first bevel gear 235. At rest, when the motor 220 is stopped, the weights 273 and 274 are in the retracted position within their respective housings 2713 and 2714. The springs hold the weights in this position. The clutch means 270 is in the disengaged position. In operation, when the engine is started, the motor 220 rotates the input shaft 233, the input shaft 233 itself causing the plate 271 of the clutch means to rotate. During the rotation of the input shaft 233, the centrifugal force exerted on the weights 273, 274 becomes greater than the restoring force exerted by the springs, which causes a movement of the weights 273 and 274 under the spring. effect of a centrifugal force. The weights 273 and 274 deviate from the axis of rotation of the plate 271 (or the central hole 2711 of the plate 271) to an extended position in which the weights 273, 274 project outside the housing 2713 and 2714. When the weights 273, 274 are in the deployed position, one of the weights comes into radial abutment against the second branch 2722 of the stop piece 272. This has the effect of engaging the plate 271 with the first pinion 235. The clutch means 270 is then in the engaged position. In this position, the input shaft 233 rotates the first intermediate shaft 241 by means of the transmission elements 235, 236, 237, 238, 239 and 240. The intermediate shaft 241 rotates the drive shafts. output 246 and 246 'through elements 242 and 243 and elements 242' and 243 'respectively. The fifth cylindrical gear 242 meshes with the sixth cylindrical gear 243, the sixth cylindrical gear 243 being rotatably mounted about the second intermediate shaft 245. The sixth cylindrical gear 243 rotates the first output shaft 246 for supporting the wheel 261. D on the other hand, the seventh cylindrical gear 242 'meshes with the eighth cylindrical gear 243', the eighth cylindrical gear 243 'being rotatably mounted about the second intermediate shaft 245. The eighth cylindrical gear 243' rotates the second output shaft 246 for supporting wheel 262.

It will be noted that the cylindrical gears 242, 243, 242 'and 243' are disposed outside the housing 250, so that the cylindrical gears 242, 243, 242 'and 243' can easily be replaced to adjust the wheel drive speed 261 and 262.

With such a reduction unit 230, the two wheels 261 and 262 can be rotated at the same or different speeds. The ratio between the driving speeds of the wheels is regulated by the choice of the cylindrical gears 242, 243, 242 'and 243' located outside the housing 250.

The sets of sprockets 242, 243 and 242 ', 243' may comprise different sprockets. For example, the pinions 242 and 243 may have respectively 12 and 38 teeth, while the pinions 242 'and 243' may have respectively 13 and 37 teeth, so that the sets of pinions 242, 243 and 242 ', 243' present different reduction ratios.

The pinions 242, 243, 242 'and 243' are accessible to an operator and their change does not require opening the housing 250. Thus, during the installation of the opening and closing device, an operator can choose sprockets 242, 243, 242 'and 243' adapted to the type of mobile structure to be driven.

The device is in particular adapted for opening and closing pivoting gates (as illustrated in FIG. 4) in which one of the wheels 262 travels a trajectory 2 which is larger than the trajectory 1 of the other wheel. 261. When the motor 220 is deactivated, the centrifugal force exerted on the weights 273, 274 vanishes and the restoring force exerted by the springs on the flyweights 273, 274 causes a return of the weights 273 and 274 towards the interior of housing 2713 and 2714, in the retracted position. Thus, upon stopping the rotation of the engine, the clutch means 270 is in the disengaged position and the input shaft 233 is no longer in engagement with the first bevel gear 235. The wheels 261 and 262 of the device can rotate without driving the engine 220, which facilitates manual manipulation of the mobile structure on which the device is mounted.

Figure 5 shows a swimming pool opening and closing device, according to a second embodiment of the invention. In this second embodiment, the device comprises a fixed part 300 intended to be fixed on a pool enclosure or the like, and a movable part 200 mounted on the fixed part 300 and able to be displaced with respect to the fixed part 300. The moving part 200 comprises a motor 220, a battery 201 supply, a control electronics 202 of the engine 220, two gearboxes 229, 230 and two pairs of wheels 261, 262 and 291, 292. Each of the two engine outputs 220 is connected to one of the gearboxes 229 and 230. The gear unit 230 rotates the two wheels 261 and 262 while the gear assembly 229 rotates the two wheels 291 and 292. includes four driving wheels, this second embodiment is particularly stable and is suitable for driving sliding structures. Since the at least one reducer assembly (s) is reversible, the mobile structures equipped with the opening and closing device can be manipulated manually. This is particularly advantageous in the case where the motor can no longer be powered, for example due to a power failure or discharge of the battery. As will be understood, the proposed mobile structure opening and closing device can be easily adapted to driving different types of mobile structures (pivoting or sliding). 25

Claims (9)

REVENDICATIONS1. Device for driving a mobile structure, comprising at least one rotary element (261, 262, 291, 292), a motor (220) and a transmission assembly (229, 230) comprising an input shaft (233) with which the motor (220) is coupled with an output shaft (246, 246 ') to which the rotary element (261, 262, 291, 292) is coupled, characterized in that the transmission assembly (229, 230) also comprises a clutch means (270) capable of selectively coupling the input shaft (233) and the output shaft (246, 246 ') when the input shaft (233) is rotated by the motor (220) and uncoupling the input shaft (233) and the output shaft (246, 246 ') when the input shaft (233) is not rotated by the motor (220 ). 2. Device according to claim 1, wherein the rotary member (261, 262, 291, 292) is a clean wheel to be brought into contact with a surface to move the movable structure relative to the surface. 3. Device according to one of claims 1 or 2, wherein the clutch means (270) comprises at least one flyweight (273, 274) adapted to be moved under the effect of a centrifugal force generated by the rotation of the input shaft (233) of a disengaged position in which the input shaft (233) and the output shaft (246, 246 ') are uncoupled to an engaged position in which the output shaft input (233) and the output shaft (246, 246 ') are coupled. 4. Device according to claim 3, comprising a return member (275, 276) for biasing the weight (273, 274) to the disengaged position. 5. Device according to one of claims 3 or 4, wherein the clutch means (270) comprises a stop piece (272) on which30 the weight (273, 274) abuts to couple the input shaft (233) and the output shaft (246, 246 '). 6. Device according to claim 5, wherein the abutment piece (272) is rotatably mounted about an axis of rotation and has an L shape having a branch (2721) extending in a radial direction relative to the axis of rotation and a branch (2722) extending in an axial direction relative to the axis of rotation. 7. Device according to one of claims 5 or 6, wherein the transmission assembly (229, 230) comprises a transmission element (235) rotatably mounted about an axis of rotation parallel to an axis of rotation of the input shaft (233), the transmission element (235) comprising a housing (2351) receiving the abutment piece (272). 8. Device according to claim 7, wherein the housing (2351) is a radial groove. 9. Mobile structure relative to a surface, provided with a drive device 20 according to one of claims 1 to 7 to open and close the movable structure.