FR3029554B1 - DRIVE DEVICE FOR MOVING A COMPONENT OF A MOTOR VEHICLE - Google Patents

Abstract

A driving device (10) having an actuator for moving a component, in particular a box with an output shaft, a hinge having a first arm (6), fixed and a second arm, a torque support (11), the second hinge arm being aligned with the output shaft being rotationally secured thereto and a stud (9) passing through a through hole (61, 111) of the first arm (6) and the torque support ( 11). The stud (9) has a tapered area (92) decreasing in the extension direction (961) of the stud (9).

Description

Field of the invention

The present invention relates to a drive device for a motor vehicle having an actuator for moving a component, in particular a box, with an output shaft rotating in the direction of rotation and against this direction of rotation, a hinge having a first arm, fixed and a second arm pivotable with respect to the first arm in the direction of rotation and in the opposite direction and a torque support to act as a torque support when pivoting the second hinge arm relative to the first hinge arm the second hinge arm aligned with the output shaft being integrally rotatably connected thereto and a pin which in the installed state of the driving device passes through a through bore of the first hinge arm and / or of the couple support. The invention also relates to an actuator of a drive device, to a vehicle equipped with such a device and to a mounting method of this drive device.

State of the art

The drive devices or actuator used to operate components such as flaps, including pivoting the trunk of the vehicle. They allow to operate flaps of high weight and large dimensions.

DE 10 2014 217 513.5 describes such a training device according to the technique for pivoting a component. This drive device 10 according to the state of the art is described with reference to FIG. 1. In this drive device 10, the angle of rotation (pivot angle) between the complementary drive member 20 and the drive member 50 is not determined at the time of assembly. As a result, the first fixed hinge arm 6 and the torque support 11 are installed offset from one another at the time of assembly. Nevertheless the tolerances of the actuator 1 and / or the hinge 4 also participate in this shift. This complicates the reciprocal fixing of the first hinge arm 6 to the torque support 11. But insufficient connection is reflected during the pivoting of the trunk, especially at the start at a standstill and / or during a change of direction at switching noises and higher wear.

Purpose of the invention

The present invention aims to develop a drive device for actuating a component, in particular for pivoting the trunk of a motor vehicle, so as to improve and allow to mount it very quickly and easily by compensating for tolerances of the driving device, in particular the actuator and / or the hinge and to avoid any switching noise during operation.

DESCRIPTION AND ADVANTAGES OF THE INVENTION For this purpose, the subject of the invention is a drive device for a motor vehicle having an actuator for moving a component, in particular a box with an output shaft rotating in the direction of rotation and against this direction of rotation, a hinge having a first arm, fixed and a second arm pivotable relative to the first arm in the direction of rotation and in the opposite direction and a torque support to act as a torque support when pivoting the second. hinge arm relative to the first hinge arm, the second hinge arm being aligned with the output shaft being integrally rotatably connected thereto, and a pin which, in the installed state of the driving device, a piercing through the first hinge arm and / or the torque support, this device being characterized in that the stud has a conical zone which decreases in the direction extension of the stud.

In other words, the invention develops a driving device comprising an actuator for moving a component of the vehicle. The component is in particular a component such as the trunk. In a particularly preferred manner, it is the trunk of the vehicle. In this embodiment, the actuator is that of the trunk for pivoting it. But in principle, the device according to the invention also makes it possible to actuate other components.

To automatically rotate the components, the actuator comprises a drive means provided with a transmission to increase the speed of rotation of the drive means. For sufficient assistance, the transmission is preferably in the form of a double screw gear with, in particular, a planetary transmission and a spur gear stage. But one can also consider another transmission, for example a transmission screw, a spur gear transmission, a planetary transmission and / or a combination of such transmissions.

The driving means of the drive device is preferably an electric motor and in particular a permanent excitation electric motor. In a particularly preferred manner, the electric motor is a DC motor or an electronically commutated motor. The actuator has an output shaft, concentric with the output shaft of the driver. The output shaft can rotate in the direction of rotation and in the opposite direction of rotation of the output shaft of the driver.

The driving device further has a hinge having a first arm and a second arm opposite to the first hinge arm and rotating in the opposite direction of rotation to that of the first arm about the axis of the hinge. The component is mounted on the second hinge arm The actuator is used to rotate or rotate the second hinge arm. For this, the axis of the hinge and the output axis are preferably coaxial. The pivoting of the second hinge arm rotates the component that it carries.

The second hinge arm is integrally connected in rotation to the output shaft. Preferably, the second hinge arm comprises a drive member which, in the installed state, is connected by a connection in the form to the drive means or complementary drive member of the output shaft, in particular by means of a removable link. The drive member and the complementary drive member have corresponding shape-connecting means, preferably opposed connecting means. Preferably, the drive member has a toothing and the complementary drive member has a complementary toothing. In this embodiment, the toothing of the drive member and the complementary toothing interpenetrate. But one can also consider an embodiment of the drive member and the complementary drive member with latching means which, in the installed state interlocking including removably.

For the support of the torque produced by the pivoting (or rotation) of the second hinge arm relative to the first hinge arm, the drive device has a torque support which is part of the actuator. The torque support is preferably a housing portion of the actuator. But it can also be a part or a part of the body of the vehicle. In a particularly preferred manner, this part is a sheet installed on the actuator. In this embodiment, this piece is made from a material in the form of flat ribbon, in plate, in particular of a stamped part which corresponds to an economic realization. Thus, it can be adapted for example by a complementary bending process, very simply to the geometry of the hinge.

The driving device further has a stud which, when the driving device is installed, comes into a through bore of the first hinge arm and / or torque support. This solution is characterized in that the stud has a conical zone which decreases in the direction of extension of the stud.

The conical zone generates a radial force which, when an axial force acting in the extension direction of the stud is applied, is generated when the conical zone at the axial displacement of the actuator relative to the hinge bears in the through bore of the first hinge arm and / or in the torque support. The radial force rotates the first hinge arm and the torque support relative to one another, thereby rotating the drive member and the complementary drive member.

According to a preferred development, the stud is on the first hinge arm and passes into the through bore of the torque support. In this embodiment, the radial force is exerted on the first hinge arm when the conical area of the stud comes into abutment against the piercing through the torque support. According to a second preferred embodiment, the stud is carried by the torque support and it passes through the through bore of the first hinge arm. In this embodiment, the radial force acts on the torque support when the conical region of the stud bears against the through bore of the first hinge arm.

According to a third particularly preferred embodiment, the stud is a separate piece which passes through both the drilling of the torque support and the first hinge arm. In this embodiment, the radial force acts on the torque support and / or the first hinge arm as soon as the conical zone of the stud bears against the drilling of these parts.

The stud preferably has an adjusted area. When the driving device is installed, the stud is applied at least regionally by a connection by the shape and / or the force, in particular with a tight fit in the through bore of the first hinge arm and / or the couple support. Thus, the first hinge arm and the torque support are connected to the stud and to each other by a connection by the form. The radial tolerances are thus compensated for by the stud. To lock the first hinge arm and the torque support in the axial direction relative to each other, the driving device further has a connecting pin. The connecting bolt is preferably installed on the hinge arm, or on the torque support; alternatively, it is a separate part. Preferably, it has a connection zone with a connection means by the shape, in particular with a thread. In this embodiment, the drive device furthermore has a nut which constitutes the form connecting means, complementary, with a complementary thread. The nut is screwed onto the thread of the connecting stud. To lock the first hinge arm to the support of torque, one can consider other connecting means such as for example a rivet.

According to a particularly preferred development, the screwing of the nut on the thread generates an axial force. The use of the connecting stud for locking the first hinge arm to the torque support in addition to the stud requires a second drilling in the first hinge arm and / or torque support; this second bore receives the link pin in the installed state. Thus, and particularly preferably, the stud has a connecting zone and also provides the axial force to lock the first hinge arm to support torque. The connection zone is preferably on the side of the conical zone opposite the adjusted zone.

In the case of a dowel constituted by a separate part, it is further preferably provided that the stud comprises a head. The stud head constitutes a stop which locks the stud in axial sliding in the axial direction. In this embodiment, the stud is slidably locked in the axial direction, in the installed state by a nut screwed onto the connection area.

The stud, especially the conical zone preferably has an oval section, or substantially rectangular or round. The shape of the section is chosen according to the congestion conditions. The invention also relates to a motor vehicle equipped with such a drive device. The drive device is preferably used to drive or control the trunk of the vehicle. But this training device can also be applied to other components or components of the vehicle. The invention also relates to a method of mounting such a drive device. In other words, the subject of the invention is a method of mounting a driving device in which the first hinge arm is blocked by screwing the nut onto the connection zone of the stud or the stud of connection in support of the pair, the stud moving in the direction of extension and bearing against the through bore of the first hinge arm and / or the torque support so that the radial force is exerted on the first hinge arm and / or the torque support and that the first hinge arm and the torque support pivot relative to each other.

After having actuated the actuator in the axial direction on the hinge or vice versa the hinge in the axial direction on the actuator, the drive member and the complementary drive member engage and assemble by a connection by the shape so that for mounting simply swivel and tighten the nut. The torque support and the first hinge arm are thus rotated relative to each other; thus, the stud is centered in the drilling of the first hinge arm and / or the torque support and under these conditions the radial tolerances of the hinge and / or the actuator compensate each other.

The stud moves as pulled by the tightening of the nut, in the extension direction so that it abuts against the through bore of the torque support and / or the first hinge arm. The adjusted area of the stud is dimensioned so that the stud sinks tightly into the bore of the torque support and / or the first hinge arm. The torque support and the first hinge arm are thus locked to one another by a connection by the form. At start-up, stop and / or change of direction, there will be no switching noise.

As after assembly of the actuator to the hinge, it is sufficient to screw the nut on the stud, the drive device according to the invention is mounted very easily and very quickly.

drawings

The present invention will be described hereinafter with the aid of an example of a motor vehicle driving device shown in the accompanying drawings in which: FIG. 1 shows a drive device according to the state of the art, the FIG. 2 in its parts 2a-2d shows in FIG. 2 (a) an extract of the training device according to the invention when mounting, in FIG. 2 (b) a detail of FIG. 2 (a) of the device of FIG. Figure 2 (c) is a section along AA of Figure 2 (b), and Figure 2 (d) shows a detail of another embodiment of the invention.

Description of embodiments

The drive device 10 according to the state of the art shown in Figure 1 comprises an actuator 1 with a motor and a hinge 4. The hinge 4 has a first arm 6 and a second arm 5 pivoting relative to the first arm 6 around a hinge axis 8 in the direction of rotation 81 and in the opposite direction. The first hinge arm 6 is for example integral with a body. The component is carried by the second hinge arm 5.

When the drive device 10 is mounted, the actuator 1 is engaged in the axial direction 80 on the hinge 4 and then, with the aid of a support pin 12, it is fixed to the first hinge arm 6 so that the hinge pin 8 and the output shaft 2 are aligned and that the actuator 1 and the first hinge arm 6 are integral in rotation. Depending on the drive device, a mounting is preferably chosen in which the hinge is engaged on the actuator.

For this, the second hinge arm 5 comprises a drive member 50 having a drive head 501 provided with a connection means by the form. Here, this means of connection by the shape is an internal toothing 502. The output shaft 20 comprises for this a complementary drive means 201 provided with a complementary means of connection by the form; in this example, this means is the external toothing 202 whose shape corresponds to the internal toothing 502 of the drive member 50. When moving in the axial direction 80, the external toothing 202 and the internal toothing 502 come from in take. Thus, the drive means 50 in the installed state is rotated when the output shaft 20 rotates. Thus, the second hinge arm 5 and the component continue to be rotated.

When the second hinge arm 5 pivots relative to the first hinge arm 6, the generated torque is received by a torque support 11 integral with the adjustment drive 1 on the first hinge arm 6. For this, a dowel support 12 connects the first hinge arm 6 to the torque support 11.

The bearing pin 12 is here a usual screw pre-installed on the torque support 11 and having an oblong slot-shaped through passage 61 in the first hinge arm 12.

Figure 2 shows in its parts (a) - (d) details of the drive device 10 according to the invention.

The drive device 10 according to the invention comprises the actuator 1 with the output shaft 20 rotating in the direction of rotation 21 and in the opposite direction. In addition, this device comprises the hinge 4 and its first hinge arm 6 as well as the second hinge arm 5 pivoting with respect to the first hinge arm 6 about the hinge axis 8 in the direction of rotation 81 and in the opposite direction of rotation. The component which is preferably the boot is attached to the hinge arm 5.

The second hinge arm 5 comprises the drive member 50 and the complementary drive member 201. The drive member 50 and the complementary drive member 201 are aligned with respect to each other. other by axial sliding and they are integrally connected by the shape. For this, the drive member 50 comprises the connection means by the form 502 which is for example an internal toothing cooperating with the complementary means 202 of connection by the form; this means is for example the external toothing of the complementary drive member 201 to cooperate by a connection by the form.

Parts 2 (a), (b) and (d) of FIG. 2 each show a view from above of a torque support 11 installed on actuator 1. The representation shows the side facing actuator 1. Actuator 1 is not shown. To explain the invention is schematically shown the drive member 201 and the complementary drive member 501 of the second hinge arm 5 provided against the output shaft 20. The drawing shows the connecting means by the form 202 of the drive member 201 which is here in the form of an internal toothing and thus the complementarily shaped connecting means 502 of the complementary drive member 501 in the form of external teeth. In reality, the drive device 10 comprises the drive means 201 and the complementary means 502 on the side of the torque support 11 not facing the actuator 10 and not visible in this top view. The representations of Figs. 2 (a), (b) and (d) show a detail of the drive device 10 in schematic form.

Fig. 2 (a) schematically shows a detail of a first embodiment of a driving device 10 during mounting; Figure 2 (b) shows the detail when the drive device 10 is installed. Figure 2 (c) shows the section A-A of Figure 2 (b).

The hinge 4 is mounted on the vehicle by fixing the hinge arm 6 for example to the body. The drive device 10 is mounted by sliding the actuator 1 in the axial direction 80 on the hinge 4. Then it is fixed to the first arm 6 of the hinge.

The torque produced by the operation of the drive device when the second arm 5 of the hinge rotates relative to the first arm 6, is received by the torque support 11 integral with the actuator 1 on the first hinge arm 6.

To fix the actuator 1 to the first hinge arm 6 and to receive the torque, a stud 9 is also provided. However, at the time of assembly, the angle of rotation 3 between the complementary drive member 20 and the drive member 50 is over-defined. This is why the first fixed hinge arm 6 and the torque support 11 are also offset in rotation at the time of assembly. This is schematically shown in Figure 2a. This makes mounting more difficult.

In order to simplify the assembly and to compensate for the tolerances of the actuator 1 and / or of the hinge 4, a stud 9 having a conical zone 92 is used. When an axial force is exerted on the stud 9 which acts in the direction of extension 961 of the stud 9, it comes into abutment against the through bore 61, 111 of the first hinge arm 6 and / or the torque support 11 which results in a radial force rotating the first hinge arm 6 and the torque support 11 relative to each other.

In the drive shown, the actuator 1 slides on the hinge 4. The position of the first hinge arm 6 is thus fixed. The radial force acts when turning the torque support 11 and with it the actuator 1. The drive member 50 and the complementary drive member 201 are thus rotated and the pin 9 is then centered in the through holes 61, 111.

Preferably, there is also a drive device 10 whose actuator 1 is fixed and the hinge 4 slides on the actuator 1 so that the radial force pivots the first hinge arm 6.

The stud 9 is in this case a separate part and for this, both the first hinge arm 6 and the torque support 11 each have a through bore 61, 111 that the stud 9 passes in the installed state.

Preferably, according to one embodiment, the stud 9 is carried by the first hinge arm 6 and the bore 111 passes through the torque support 11; according to one embodiment the stud provided on the torque support 11 passes through the bore 71 of the first hinge arm 6.

In the embodiment shown, the pin 9 is guided against the axial direction 80 through the bores 61, 111 of the torque support 11 and the first hinge arm 6. But, preferably, there is also an assembly of the stud 9 in the axial direction 80.

In addition to the conical zone 91, the stud 9 has an adjustment zone 93 behind the conical zone 92 so that when the stud 9 is moved in the extension direction 961 in the holes 61, 111, it is guided once the conical zone 92 has passed the bores 61, 111. At this moment, the first hinge arm 6 and the torque support 11 have already pivoted relative to each other so that the stud 9 is centered in the through holes 61, 111. The adjusted zone 93 is dimensioned so that in the centered state, the stud 9 is applied at least by zone, by a connection by the shape in the through bores 61, 111 of the first hinge arm 6 and the torque support 11. Preferably, in the installed state, the stud is pressed by a tight fit into the through bores 61, 111. Thus, the first hinge arm 6 and torque support 11 in the installed state are connected to each other by u do binding by the form. The radial tolerances of the hinge 4 and / or the actuator 4 are thus compensated.

The stud 9 used here has a conical zone 92 and an adjusted zone 93 whose section is substantially rectangular with rounded corners. But, preferably, the stud 9 has an oval or round shape.

In the case of a substantially oval or rectangular section in the adjusted zone 93, the height H 93 of the adjusted zone 93 of the stud 9 is preferably at least equal to or greater than the height H 11 of the through bores 61, 111. Thus, the stud 9 is clamped in the through bores 61, 111 for the adjusted zone 93. In contrast, the width B93 of the stud 9 in the adjusted zone 93 is preferably less than the width B1 of the through bores 61, 111 to compensate for the tolerances. of the hinge 4, in particular the first hinge arm 6 and the actuator 1 and / or the torque support 11.

To lock the torque support 11 to the first hinge arm 6 against sliding in the axial direction 80, the stud 9 further comprises a connection zone 90 with a connection means by the form which is here a thread. The stud also has a head 94 of height H94 greater than the height H111 of the through bores 61, 111. The head 94 of the stud thus forms a stop 95 which blocks the stud 9 against any sliding in the axial direction 80.

The connection zone 90 can receive a nut 7 which has a thread corresponding to that of the thread 91 to form a connecting means by the shape 71.

This embodiment of the stud 9 has the advantage that when the nut 7 is screwed onto the thread 71 the axial force is additionally applied to the stud 9. The stud 9 of this embodiment is thus used not only to block the drive device 10, but also to center the pin 9 in the through holes 61, 111 and to turn the torque support 11 relative to the first hinge arm 6.

Figure 2 (c) schematically shows a detail of another embodiment of the drive device 10 according to the installation, in the mounted state.

In this embodiment, the stud 9 has a conical zone 92 and an adjusted zone 93; it is placed in the first through hole 111 of the torque support 11. It is fixed to the first hinge arm 6 and has neither head 94 nor connection zone 96. The stud 9 of this embodiment of the device provides only the centering function which produces the relative pivoting of the first hinge arm 6 and the torque support 11 during assembly. The radial tolerances are compensated and the first hinge arm and the torque support 11 are connected by a connection by the shape, by the adjusted zone 93 of the stud 9. By way of example, the conical zone 92 and the adjusted zone 93 of this stud 9 may further have a round section.

The attachment between the first hinge arm 6 and the torque support 11 in and against the axial direction 80 is achieved by means of an additional connecting pin 9 '. The connecting stud 9 'is a separate piece. One can use for this a usual screw or a rivet.

For this, the torque support 11 has a second through bore 112 aligned with the through bore (not referenced) of the first hinge arm 6. The second through bore 112 of the torque support 11 is in the form of an oblong hole for to compensate for manufacturing tolerances of the first hinge arm 6 and / or the torque support 11.

In the embodiment shown, the connecting pin 9 is a screw and has the connecting zone 90 'with the thread 91' and a connecting stud head 94 'constituting a stop (not referenced). When the nut 7 is screwed onto the connecting pin 9 ', the axial force acts on both the stud 9 and the connecting stud 9'. The stop and the nut 7 block the sliding of the connecting pin 9 'in the axial direction 80 or the opposite direction, in the installed state.

NOMENCLATURE OF THE MAIN ELEMENTS 1 Actuator 2 Output shaft 4 Hinge 5 Second hinge arm 50 Drive unit 501 Drive head 502 Internal toothing 6 First hinge arm 61 Through hole 7 71 Form connection /

Additional means 8 Hinge pin 80 Axial direction 9 Pin 91 Direction of rotation / tapered area / thread 92 Tapered area 93 Adjusted area 94 Head 96 961 Stud extension direction 10 Drive 11 Torque support 111 Through-hole drilling 112 Drilling 12 Support pin 20 Output shaft 201 Supplementary drive 202 Inner tooth / means of connection 80 Axial direction

Claims (11)

REVE NPI CATION S 1 °) Drive device (10) for a motor vehicle having an actuator (1) for moving a component, in particular a box with an output shaft (20) rotating in the direction of rotation (21) and against this direction of rotation, a hinge (4) having a fixed first arm (6) and a second arm (5) pivotable with respect to the first arm (6) in the direction of rotation (21) and in the opposite direction, and a torque support (11) for providing torque support upon pivoting of the second hinge arm (5) relative to the first hinge arm (6), the second hinge arm (5) being aligned with the hinge arm (5). output shaft (20) being integrally rotatably connected thereto and a pin (9) which, in the installed state of the drive device (10), passes through a through bore (61, 111) of the first hinge arm (6) and / or torque support (11), characterized in that the stud (9) has a conical zone (92) dim in the extension direction (961) of the stud (9), and a nozzle area (93) which is in front of the conical zone (92) in the extension direction (961) and through which the stud (9) in the installed state of the driving device (10) is at least regionally applied by a connection in form and force, with a tight fit in the through bores (61, 111) of the first hinge arm (6) and torque support (11) so that when sliding the stud (9) in the extension direction (961), the nozzle area (93) is guided in the through bores (61, 111) after the tapered area (92) has passed through these bores. Driving device (10) according to claim 1, characterized in that the stud (9) is on the first hinge arm (6) and passes through a through bore (111) of the torque support ( 11) or on the torque support (11) and passes through a through hole (61) of the first hinge arm (6) or a separate part (9) which passes both through a through bore (111) of the torque support (11) and a through bore (61) of the first hinge arm (6). Drive device (10) according to claim 1, characterized in that it comprises a connecting bolt (9) for locking the first hinge arm (6) and the torque support (11) in and against the axial direction (80) of extension of the output shaft (20), or the pin (9) is provided at the same time to lock the first hinge arm (6) against the torque support (11) in and against the axial direction (80). Drive device (10) according to claim 1, characterized in that the bolt (9) has a connecting zone (90) for locking the first hinge arm (6) to one another. couple support (11). 5) A drive (10) according to claim 1, characterized in that the connecting zone (90) has a thread for receiving a nut with complementary thread. 6 °) Drive device (10) according to claim 1, characterized in that the stud (9) is a separate piece and comprises a head (94) forming a stop (95). 7 °) Drive device (10) according to claim 1, characterized in that the conical zone (92) of the stud (9) has a substantially rectangular section, oval or round. 8 °) Drive device (10) according to claim 1, characterized in that the torque support (11) is a stamped stamped or stamped part manufactured from a flat ribbon. Drive device (10) according to claim 1, characterized in that the second hinge arm (5) has a drive member (50) which, in the installed state, is connected by a connection by the shape, in particular removably to a complementary drive member (201) of the output shaft (20). Motor vehicle comprising a driving device (10) according to any one of claims 1 to 9, having an actuator (1) for moving a component, in particular a box with an output shaft (20) rotating in the direction of rotation (21) and against this direction of rotation, a hinge (4) having a fixed first arm (6) and a second arm (5) pivotable with respect to the first arm (6) in the direction of rotation (21) and in the opposite direction, and a support (11) for acting as a torque support when pivoting the second hinge arm (5) relative to the first hinge arm (6), the second hinge arm (5) aligned on the output shaft (20) being integrally rotated therewith and a pin (9) which in the installed state of the driver (10) passes through a through bore (61, 111) of the first hinge arm (6) and / or torque support (11), - the stud (9) having a conical zone (92) decreasing in the di extension recess (961) of the stud (9). 11 °) A method of mounting a drive device (10) according to any one of claims 1 to 9 wherein the first hinge arm (6) is blocked by screwing the nut (7) on the connecting zone (90) of the bolt (9) or the connecting bolt (9j supporting the torque (11), the bolt (9) moving in the extension direction (961) and bearing against the through hole (61, 111) of the first hinge arm (61) and / or the torque support (11) so that the radial force is exerted on the first hinge arm (6) and / or the torque support (11) which pivot relative to each other.