FR3052876A1 - CINEMATICS AND MECHANISM FOR DISPLACING A HIGH HEAD DISPLAY. - Google Patents

Abstract

A head-up display system (2) for displaying information on a medium, the system comprising: - a display (6); a device (9) for orienting the display incorporating: a first primary part (22) rotatable about a first axis (23) and in pivot connection with the display; • a device (25) for moving, able to rotate the first primary part around the first axis; the orientation device incorporating: - a second part (27) primary, rotatable about a second axis (28), parallel to the first axis, and in pivot connection with the display; - A primary arm (31) in pivot connection with the second primary part and with the first primary part, so that the first primary part, the primary arm, the second primary part form substantially three sides of a parallelogram.

Description

CINEMATICS AND MECHANISM FOR MOVING A HIGH HEAD DISPLAY SYSTEM.

The invention relates to the field of head-up display systems, and more particularly to the kinematics of displacement of these systems.

Current motor vehicles are able to display a growing number of information.

This information can have a direct impact on the life of the vehicle such as, for example, the temperature of the coolant or the amount of oil in the engine. This information may be related to the safety of the occupants of the vehicle such as, for example, the speed of the vehicle, the proper closing of the doors or seat belts. This information can also serve the comfort of the driver and passengers such as, for example, the title of the song on the radio or the route to be performed by a system of geolocation and guidance integrated in the vehicle.

During the driving of the vehicle, its driver is regularly brought to view this information to verify the proper operation of the vehicle, the speed of the vehicle or the path to follow. This information is usually displayed on the dashboard of the vehicle, that is to say below the windshield allowing the driver control of the environment outside the vehicle.

Studies have shown that a driver puts about a second, the course of a distance of thirty-six meters for a vehicle traveling at a speed of one hundred and thirty kilometers per hour, to search and read information on the dashboard. During this second the driver is no longer attentive to events that may occur outside the vehicle and likely to cause an accident.

It is known in order to prevent the driver of the vehicle leaves the road eyes to read information, to equip vehicles with a head-up display system. The head-up display system allows the projection of information, such as the speed of the vehicle or the changes of directions when the system of geolocation and guidance is activated, on the windshield of the vehicle or on a transparent screen arranged between the windshield and the driver. The head-up display system thus enables the driver of the vehicle to search for and read information while remaining attentive to the environment outside the vehicle.

Conventionally, the head-up display systems comprise an orientation device allowing a height adjustment of the display on the windshield or the vehicle screen so as to correspond to a maximum of morphologies of the drivers of the vehicle. vehicle.

Document US 2012/0176683 thus describes a device for orienting a screen for reading a display of a head-up display system. The orientation device comprises a lever movable in rotation, at one end, with respect to a base and, at another end, relative to the screen. The lever includes a central pin configured to follow a spiral formed on a disk rotated by a motor. The movement of the lever, generated by the disk, moves the screen between a deployed position, where the screen is projecting from the base, and a folded position, where the screen is disposed substantially in the base.

Such a head-up display system has a kinematic causing significant friction between the disk and the screen and therefore a risk of saccade of the display when adjusting the height thereof. The clearance necessary for the sliding of the pin in the spiral does not guarantee a good stability of the display when the head-up display system is subjected to vibrations, as, for example, when a vehicle comprising such a display system head up is in motion. The axis around which is defined the spiral, not being fixed relative to the disk, causes a variation in the speed of movement of the screen between its deployed position and its folded position, for a constant speed of the motor. The transmission of movement between the disc and the lever does not allow the transmission of significant power. In addition, such a head-up display system is bulky.

A first objective is to provide a head-up display system configured to display information on a medium.

A second objective is to provide a head-up display system whose display is adjustable in height.

A third objective is to provide a head-up display system whose adjustment of the height display is fluid.

A fourth objective is to provide a head-up display system whose display is stable when the head-up display system is subjected to vibration.

A fifth objective is to provide a head-up display system whose speed of movement of the display is constant.

A sixth objective is to provide a head-up display system for transmitting significant power.

A seventh objective is to provide a compact head-up display system.

An eighth objective is to provide a vehicle comprising a head-up display system meeting the above objectives.

For this purpose, it is proposed, in the first place, a head-up display system for displaying information on a medium, this system comprising: a display; a device for orienting the display, this orientation device integrating: a first primary part, rotatable about a first axis passing through a first primary point of the first primary part, the first primary part being in pivot connection with the display at a first primary location of the first primary part, distinct from the first primary point; A moving device, configured to rotate said first primary part about the first axis; the orientation device incorporating, in addition: a second primary part, rotatable about a second axis passing through a second primary point of the second primary part, the second axis being parallel to the first axis, the second primary part being in pivot connection with the display in a second primary location of the second primary part, distinct from the second primary point; a primary arm pivotally connected to the second primary part at a third primary point, the primary arm further being pivotally connected to the first primary part at a fourth primary point, so that the first primary point, the second primary point; primary point, the third primary point and the fourth primary point substantially form a parallelogram.

The head-up display system is thus adjustable in height by means of the orientation device.

In addition, the deformable parallelogram formed by the orientation device allows a fluid height adjustment and transmission of significant power.

Various additional features may be provided, alone or in combination: the first primary part comprises a first primary gear, in the form of a circular arc, whose center is coincident with the first primary point of the first primary part, the first primary gear connecting the motion device and the first primary part; the orientation device comprises a second primary gear and a third primary gear, the second primary gear and the third primary gear being substantially circular in shape, the movement device being directly connected to the third primary gear, the third primary gear being directly connected to the second primary gear and the second primary gear being directly connected to the first primary gear of the first primary piece; the second primary part comprises a finger configured to come into contact with a low stop sensor and a high stop sensor, making it possible to stop the rotation of the first primary part around the first axis by means of the device Put into motion ; the orientation device comprises: a first secondary part, mobile in rotation about an axis passing through a first secondary point of the first secondary part, the first secondary part being in pivot connection with the display in a first secondary location; the first secondary part, distinct from the first secondary point; A second secondary part, mobile in rotation about an axis passing through a second secondary point of the second secondary part, the axis of rotation of the second secondary part being parallel to the axis of rotation of the first secondary part, the second secondary part being in pivot connection with the display at a second secondary location of the second secondary room, distinct from the second secondary point; A secondary arm pivotally connected to the second secondary part at a third secondary point, the secondary arm being further pivotally connected to the first secondary part at a fourth secondary point, so that the first secondary point, the second secondary point, second secondary point, the third secondary point and the fourth secondary point substantially form a parallelogram; A transmission shaft configured to move the first secondary part through the motion device; the orientation device comprises a second secondary gear and a third secondary gear, the second secondary gear and the third secondary gear being of substantially circular shape, the transmission shaft being directly connected to the third secondary gear, the third secondary gear being directly connected to the second secondary gear and the second secondary gear being directly connected to a first secondary gear of the first sub-part; the support comprises a first primary light, a second primary light, a first secondary light and a second secondary light, each having a generally circular arc whose centers are respectively merged with the first primary point of the first primary piece, the second primary point of the second primary part, the first secondary point of the first secondary part and the second secondary point of the second secondary part; the display comprising a first primary pin, a second primary pin, a first secondary pin and a second secondary pin, able to cooperate respectively with the first primary light, the second primary light, the first secondary light and the second secondary light of the support ; the first primary pin, the second primary pin, the first secondary pin and the second secondary pin are respectively disposed at the first primary location of the first primary room, the second primary location of the second primary room, the first secondary location of the first secondary room and the second secondary location of the second secondary room; the moving device comprises a reducer and a cable adapted to transmit rotational movement to the gearbox, the gearbox being connected to the third primary gear and to the transmission shaft of the orientation device; the device for setting in motion comprises an electric motor, able to put in rotational movement the cable.

It is proposed, secondly, a vehicle comprising a head-up display system as previously described.

Other features and advantages of the invention will appear more clearly and concretely on reading the following description of embodiments, which is made with reference to the accompanying drawings, in which: FIG. schematic perspective view of a vehicle comprising a head-up display system displaying information on the windshield of the vehicle; Figure 2 is a schematic perspective view of the head-up display system in the high position; Figure 3 is a schematic perspective view, at an angle different from Figure 2, the head-up display system in the low position.

FIG. 1 shows a vehicle 1 comprising a head-up display system 2 for displaying information 3 on a support 4.

The information 3 may be related to the state of the vehicle 1, the safety of the occupants of the vehicle 1, or the comfort of its occupants.

As illustrated in Figure 1, the support 4 is a windshield of the vehicle. According to an embodiment not shown, the support 4 is a transparent screen disposed between the windshield and a driver of the vehicle 1.

As shown in Figures 2 and 3, the head-up display system 2 comprises a base 5, a display 6 movable relative to the base 5 between a low position 7 and a high position 8 and a device 9 of orientation of the display 6 relative to the base 5.

The base 5 is configured to secure the head-up display system 2 to the vehicle 1.

According to the embodiment shown, the base 5 comprises a base 10, a primary flange 11 and a secondary flange 12. The primary wing 11 and the secondary wing 12 are integral with the base 10, so as to form a substantially U-shaped cross section.

The display 6 comprises a projector 13, capable of projecting the information 3 on the support 4. When the display 6 is disposed in the low position 7, the information 3 is not readable on the support 4. When the device 9 orientation moves the display 6 from the low position 7 to the high position 8, the information 3 projected by the projector 13 on the support 4 rise relative to the support 4 until reaching a maximum high position.

According to the embodiment shown, the primary wing 11 of the base 5 comprises a first primary light 14 and a second primary light 15. The secondary wing 12 of the base 5 comprises a first secondary light 16 and a second secondary light 17.

The display 6 comprises a first primary pin 18 and a second primary pin 19, able to cooperate respectively with the first primary light 14 and the second primary light 15 of the base 5.

The display 6 also comprises a first secondary pin 20 and a second secondary pin 21, able to cooperate respectively with the first secondary light 16 and the second second light 17 of the base 5.

[0034] Advantageously, the first primary light 14, the second primary light 15, the first secondary light 16 and the second secondary light 17 have a generally circular shape, and define the kinematics of the display 6 between the position 7 low and 8 high position.

The orientation device 9 comprises a first primary part 22, integral with the primary flange 11 of the base 5, and movable in rotation with respect to the base 5 around a first axis 23 passing through a first primary point 24. of the first primary part 22.

The orientation device 9 also comprises a device 25 for setting into motion, configured to rotate the first primary part 22 around the first axis 23.

The first primary part 22 is in pivot connection with the display 6 at a first primary location 26 of the first primary part 22.

According to the embodiment shown, the first primary location 26 is coincident with the first primary pin 18 of the display 6. The center of the arcuate shape of the first primary light 14 of the base 5 is coincident with the first primary point 24 of the first primary part 22.

The orientation device 9 also comprises a second primary part 27, integral with the base 5 and movable in rotation with respect to the base 5 about a second axis 28 passing through a second primary point 29 of the second primary part 27 .

The second axis 28 is separate from the first axis 23 and parallel thereto.

The second primary part 27 is in pivot connection with the display 6 at a second primary location of the second primary part 27.

According to the embodiment shown, the second primary location coincides with the second primary pawn of the display 6. The center of the arcuate shape of the second primary light of the base 5 coincides with the second primary point 29 of the second primary part 27.

The orientation device 9 comprises a primary arm 31 in pivot connection with the second primary part 27 at a third primary point 32. The primary arm 31 is also pivotally connected to the first primary part 22 at a fourth primary point 33.

The first primary point 24, the second primary point 29, the third primary point 32 and the fourth primary point 33 substantially form a deformable parallelogram. Thus, the rotation of the first primary part 22, induced by the movement device 25, induces an identical rotational movement of the second primary part 27 about the second axis 28.

According to the illustrated embodiment, the first primary part 22 comprises a first primary branch 34, provided with the first primary location 26 and the fourth primary point 33. The first primary member 22 further includes a first primary gear 35 disposed opposite the first primary leg 34 relative to the first axis 23.

[0046] Advantageously, the first primary location 26 and the fourth primary 33 are merged.

The first primary gear 35 has a shape of a circular arc, the center of which is situated on the first axis 23. The length of the arc formed by the first primary gear 35 makes it possible, in the display 6 , to be moved between the low position 7 and the high position 8.

According to the illustrated embodiment, the second primary part 27 comprises a second primary branch 36, provided with the second primary location 30 and the third primary point 32. The second primary part 27 further comprises a finger 37 disposed opposite the second primary branch 36 relative to the second axis 28.

[0049] Advantageously, the second primary location and the third primary point 32 coincide.

The finger 37 is adapted, depending on the rotation of the second primary part 27 around the second axis 28, to come into contact with a low stop sensor 38 and a high stop sensor 39 of the base 5.

The low stop sensor 38 and the high stop sensor 39 make it possible to stop the rotation of the first primary part 22 around the first axis 23 when the display 6 is in the low position 7 or in the lower position respectively. 8 high position.

According to the embodiment shown, the device 9 of orientation of the display 6 comprises a second gear 40 primary and a third gear 41 primary. The second primary gear 40 and the third primary gear 41 have a substantially circular shape.

Advantageously, the movement device 25 is directly connected to the third gear 41 primary. The third primary gear 41 is directly connected to the second primary gear 40. The second primary gear 40 is directly connected to the first primary gear of the first primary member 22.

The orientation device 9 comprises a first secondary part 42, integral with the secondary flange 12 of the base 5 and movable in rotation relative to the base 5, about an axis passing through a first secondary point 43 of the first piece 42 secondary.

The orientation device 9 also comprises a transmission shaft 44, adapted to rotate the first primary part 22 about its axis of rotation through the device 25 for setting into motion.

The first secondary part 42 is in pivot connection with the display 6 at a first secondary location 45 of the first secondary part 42.

According to the embodiment shown, the first secondary location 45 coincides with the first secondary pawn of the display 6. The center of the arcuate shape of the first secondary light 16 of the base 5 coincides with the first secondary point 43 of the first secondary piece 42.

The orientation device 9 also comprises a second part 46 secondary, secured to the base 5 and rotatable relative to the base 5 about an axis passing through a second point 47 secondary to the second part 46 secondary.

The axis of rotation of the second part 46 secondary is distinct from the axis of rotation of the first part 42 secondary.

The second secondary part 46 is in pivot connection with the display 6 at a second secondary location 48 of the second secondary part 46.

According to the embodiment shown, the second secondary location 48 is coincident with the second secondary pawn 21 of the display 6. The center of the arcuate shape of the second secondary light 17 of the base 5 is confused with the second secondary point 47 of the second secondary room 46.

The orientation device 9 comprises a secondary arm 49 in pivot connection with the second secondary part 46 at a third secondary point 50. The secondary arm 49 is also pivotally connected to the first secondary part 42 at a fourth secondary point 51.

The first secondary point 43, the second secondary point 47, the second secondary point 50 and the secondary secondary point 51 substantially form a deformable parallelogram. Thus, the rotation of the first secondary part 42 induced by the transmission shaft 44 induces an identical rotational movement of the second secondary part 46 around its axis of rotation.

According to the illustrated embodiment, the first secondary part 42 comprises a first secondary branch 52, provided with the first secondary location 45 and the fourth secondary point 51. The first secondary part 42 further comprises a first secondary gear 53 disposed opposite the first secondary branch 52 with respect to the axis of rotation of the first secondary part 42.

Advantageously, the first secondary location 45 and the fourth secondary point 51 are merged.

The first secondary gear 53 has a circular arc shape, whose center is located on the axis of rotation of the first part 42 secondary. The length of the arc formed by the first secondary gear 53 allows the display 6 to be moved between the low position 7 and the high position 8.

According to the illustrated embodiment, the second secondary part 46 comprises a second secondary branch 54, provided with the second secondary location 48 and the second secondary point 50.

According to the embodiment shown, the device 9 of orientation of the display 6 comprises a second secondary gear 55 and a third gear 56 secondary. The second secondary gear 55 and the third secondary gear 56 have a substantially circular shape.

Advantageously, the device 25 for moving is directly connected to the transmission shaft 44. The transmission shaft 44 is directly connected to the third secondary gear 56. The third secondary gear 56 is directly connected to the second secondary gear 55. The second secondary gear 55 is directly connected to the first secondary gear 53 of the first secondary piece 42.

According to the embodiment shown, the base 5, the display 6 and the orientation device 9, with the exception of the device 25 for setting in motion, are substantially symmetrical with respect to a plane 57 medium.

Thus in the embodiment shown: - the first axis 23 of rotation of the first primary part 22 coincides with the axis of rotation of the first secondary part 42; the second axis of rotation of the second primary part coincides with the axis of rotation of the second secondary part; the first primary part 22 and the first secondary part 42 are substantially identical; the second primary branch 36 of the second primary part 27 and the second secondary branch 54 of the second secondary part 46 are substantially identical; the second primary gear 40 and the second secondary gear 55 are substantially identical; the third gear 41 primary and the third gear 56 secondary are substantially identical.

According to the embodiment shown, the device 25 for setting in motion comprises an electric motor 58.

Advantageously, an angular encoder is integrated in the motor 58. The angular encoder is able to regulate the speed of operation of the motor 58, to pick up the position of the motor 58 at a given instant and to memorize a specific position of the motor 58 enabling an automatic adjustment of the height of the information display 3 on the support 4.

The device 25 for setting in motion also comprises a cable 59, able to transmit a rotational movement induced by the motor 58 by twisting the cable 59.

The device 25 for setting in motion comprises a reducer 60, connected to the third primary gear 41 and the transmission shaft 44 of the orientation device 9. The gear 60 reduces the rotational speed of the motor 58 induced third gear 41 primary and the shaft 44 of the transmission 9 orientation device.

The head-up display system 2 thus allows display, adjustable in height, through the device 9 orientation, information 3 on the support.

The deformable parallelogram formed by the orientation device 9 allows a fluid height adjustment.

The transmission of the movement of the device 25 for setting in motion by means of gears 35, 40, 41, 53, 55, 56 allows the transmission of a large power.

The symmetry of the orientation device 9 with respect to a plane 57 medium provides a high accuracy in the displacement of the display 6.

The transmission of the movement of the motor 58 by means of a cable 59 makes it possible to deport the motor 58 and to reduce the size of the head-up display system 2.

Claims (10)

A head-up display system (2) for displaying information (3) on a medium (4), said system (2) comprising: a display (6); an orientation device (9) for the display (6), this orientation device (9) incorporating: a first primary part (22) rotatable about a first axis (23) passing through a first primary point (24) of the first primary piece (22), the first primary piece (22) being pivotally connected to the display (6) at a first primary location (26) of the first primary piece (22), distinct from the first point (24) primary; A motion device (25) configured to rotate said first primary member (22) about the first axis (23); the head-up display system (2) being characterized in that the orientation device (9) further integrates: a second primary part (27) rotatable about a second axis (28) passing through a second point (29) primary of the second piece (27) primary, the second axis (28) being parallel to the first axis (23), the second piece (27) being pivotally connected to the primary display (6). a second primary location (30) of the second primary room (27) separate from the second primary point (29); a primary arm (31) pivotally connected to the second primary part (27) at a third primary point (32), the primary arm (31) being further pivotally connected to the first primary piece (22); a fourth primary point (33) so that the first primary point (24), the second primary point (29), the third primary point (32) and the fourth primary point (33) form a substantially parallelogram. 2. System (2) according to the preceding claim, characterized in that the first piece (22) primary comprises a first gear (35) primary, arcuate shape, whose center is coincident with the first point (24). ) primary primary primary part (22), the first primary gear (35) connecting the device (25) for setting into motion and the first piece (22) primary. 3. System (2) according to the preceding claim, characterized in that the device (9) orientation comprises a second gear (40) primary and a third gear (41) primary, the second gear (40) primary and third primary gear (41) being of substantially circular shape, the movement device (25) being directly connected to the third gear (41) primary, the third gear (41) primary being directly connected to the second gear (40) primary and the second primary gear (40) being directly connected to the first primary gear (35) of the first primary piece (22). 4. System (2) according to any one of the preceding claims, characterized in that the second piece (27) comprises a primary finger (37) configured to come into contact with a sensor (38) and a low stop sensor (39) for stopping the rotation of the first piece (22) primary around the first axis (23) through the device (25) setting in motion. 5. System (2) according to any one of the preceding claims, characterized in that the device (9) orientation comprises: a first part (42) secondary, rotatable about an axis passing through a first point (43) secondary of the first piece (42) secondary, the first piece (42) secondary being pivotally connected to the display (6) at a first location (45) secondary secondary part (42) secondary, distinct from the first point (43) secondary; a second part (46) secondary, rotatable about an axis passing through a second point (47) of secondary second secondary part (46), the axis of rotation of the second part (46) secondary being parallel to the axis of rotation of the first secondary part (42), the second part (46) being pivotally connected to the display (6) at a second location (48) secondary to the second part (46) secondary, distinct the second (47) secondary point; a secondary arm (49) pivotally connected to the second secondary part (46) at a third secondary point (50), the secondary arm (49) being further pivotally connected to the first secondary part (42) in a fourth point (51) secondary, so that the first point (43) secondary, the second point (47) secondary, the third point (50) secondary and the fourth point (51) secondary form substantially a parallelogram; a transmission shaft (44) configured to move the first secondary member (42) through the motion device (25). 6. System (2) according to the preceding claim, characterized in that the device (9) orientation comprises a second gear (55) secondary and a third gear (56) secondary, the second gear (55) secondary and the third secondary gear (56) being substantially circular in shape, the transmission shaft (44) being directly connected to the third secondary gear (56), the third secondary gear (56) being directly connected to the second secondary gear (55), and the second secondary gear (55) being directly connected to a first secondary gear (53) of the first secondary piece (42). 7. System (2) according to any one of claims 5 to 6, characterized in that: the support (4) comprises a first light (14) primary, a second light (15) primary, a first light (16) secondary and a second secondary light (17), each having a generally arcuate shape whose centers are respectively merged with the first point (24) primary of the first piece (22) primary, the second point (29) primary of the second primary piece (27), the first secondary point (43) of the first secondary piece (42) and the second point (47) secondary of the second piece (46) secondary; the display (6) comprises a first pin (18) primary, a second pin (19) primary, a first pin (20) secondary and a second pin (21) secondary, able to cooperate respectively with the first light (14) primary, the second primary light (15), the first secondary light (16) and the second secondary light (17) of the support (4); the first primary pin (18), the second primary pin (19), the first secondary pin (20) and the second secondary pin (21) are respectively disposed at the first primary position (26) of the first piece (22). primary portion (27) of the first primary part (27), the first secondary location (45) of the first secondary part (42) and the second secondary location (48) of the second secondary part (46). 8. System (2) according to claim 5 according to claim 3, characterized in that the device (25) for moving comprises a reducer (60) and a cable (59) adapted to transmit a rotational movement to the reducer (60), the gearbox (60) being connected to the third gear (41) primary and to the shaft (44) for transmitting the device (9) orientation. 9. System (2) according to the preceding claim, characterized in that the device (25) for setting in motion comprises a motor (58) electric, adapted to rotate the cable (59). 10. Vehicle (1) comprising a head-up display system (2) according to any one of the preceding claims.