The invention relates to the field of vehicle door handles to control the opening of vehicle doors. The invention also relates to vehicle doors and vehicles comprising such vehicle door handles.
In the vehicle rear door handles of the state of the art, handles are known that comprise a handle lever movable with respect to a handle frame between a rest position and an opening position in rotation around a handle lever axis. When the handle lever moves to its opening position, the handle lever usually activates a kinematic system in order to unlatch the door.
In the vehicle rear doors where the handle mechanism is attached to an internal side of a vehicle door panel with the handle lever that is not, or hardly, visible from the outside, also called rear hidden handle, the position of the elements of the kinematic system is problematic due to the lack of space. In particular, the kinematic lever of the kinematic system, which is in direct cooperation with the handle lever and allows the transmission of the rotation movement of the handle lever to a Bowden cable in order to unlatch the door, is a voluminous element. In the prior art, the kinematic lever has been placed either directly behind or below the handle lever. However, those positions present some drawbacks. Indeed, when the kinematic lever is placed behind the handle lever, the depth of the handle is increased which reduces therefore its compactness. In the same way, when the kinematic lever is placed below the handle lever, a housing has to be created in the door panel in order to allow the attachment of said kinematic lever because there is no space provided at first and capable of receiving the kinematic lever.
The purpose of the invention is therefore to provide a vehicle rear door handle, more particularly a vehicle rear door hidden handle, which is more compact.
To that end, the invention is directed to a vehicle rear door handle, comprising:
Thanks to the position of the kinematic lever between the free end of the handle frame and the elongated bowl, i.e., above the handle lever when the handle frame is mounted on a vehicle door panel, the vehicle rear door handle can be designed more compact. Indeed, in this configuration, the kinematic lever occupies a position which is otherwise let free and consequently lost. Thus, space utilization is optimized, in particular with rear door having a V-shaped rear edge. In addition, owing to the fact that the attachment section for the Bowden cable of the kinematic lever is protruding such that the Bowden cable can be fixed beside, i.e., not behind but axially offset, the elongated bowl, the rear door handle can further be designed more compact with, in particular, a reduced depth.
The vehicle rear door handle may further present one or more of the following characteristics, taken separately or in combination.
The handle lever at one end comprises a control cam and the kinematic lever comprises a radial arm cooperating with the control cam of the handle lever.
The kinematic lever is disposed on a rear face of the handle frame and the elongated bowl presents at the end facing the kinematic lever a through-opening to cooperate with the control cam.
The control cam has a general shape of a part of a torus.
The kinematic lever axis is orthogonal to the handle lever axis.
The kinematic lever presents an abutment and the vehicle rear door handle comprises at least one reversible inertial security system mounted on the handle frame, said reversible inertial security system comprising a rocker arm which carries an inertial mass, the rocker arm being pivotally mounted between a rest position allowing the kinematic lever to rotate between the rest position and the active position and a blocking position it reaches in case of a collision where the rocker arm cooperates with said abutment in order to block rotation of the kinematic lever in the rest position thus preventing an unlatch of the door.
The reversible inertial security system comprises a safety spring dimensioned to put the rocker arm in the rest position in case of no collision and to be overdriven by the force exerted by the inertial mass in case of a collision in order to put the rocker arm in the blocking position.
The reversible inertial security system is mounted between the free end of the handle frame and the kinematic lever.
The radial arm of the kinematic lever and the abutment of the kinematic lever are angularly offset of less than 150°, in particular less than 120°.
The abutment is formed by a sector shaped blocking tooth.
The rocker arm extends radially with respect to the kinematic lever axis.
The invention is also directed to a vehicle rear door handle comprising a vehicle rear door handle as described above.
In a preferred embodiment, the vehicle rear door comprises a vehicle rear door panel having a V-shaped rear edge, the vehicle rear door handle being attached to an internal side of the vehicle rear door panel at the rear edge of the vehicle rear door panel.
Preferably, the vehicle rear door panel comprises on its internal side a recess adjacent to the vehicle rear door handle, the recess defining an access to the handle lever of the vehicle rear door handle when the vehicle rear door is closed.
The invention is also directed to a vehicle comprising a vehicle rear door handle as described above.
The invention will be better understood and other characteristics and advantages will appear at the reading of the following description, given in an illustrative and not limiting fashion, referring to the annexed figures in which:
The rear door handle 2 comprises, in particular, a handle frame 5, a handle lever 6, a kinematic system and an inertial security system.
The handle frame 5 has an elongated shape and comprises an elongated bowl 7. The elongated bowl 7 forms a cavity which extends from one end of the handle frame 5, corresponding to a bottom end of the handle frame 5 when the vehicle rear door handle 2 is mounted on the rear door 4, to about the two-thirds of the length of the handle frame 5 (
The handle frame 5 is attached on an internal side of the vehicle rear door panel 3 (
Each rear door panel 3 has a V-shaped rear edge (
The handle lever 6, also called the flap, is pivotably received in the elongated bowl 7 and supported by the handle frame 5. The handle lever 6 is movable in rotation around a handle lever axis A with respect to the handle frame 5 between a rest position (
The handle lever 6 has an elongated and flattened shape. It comprises a graspable element 9 protruding from one of its lateral edges. The graspable element 9 is intended to be handled by a user when manipulating the handle 2.
The rear door panel 3 on which the rear door handle 2 is attached comprises on its internal side a recess 23 adjacent to the rear door handle 2. This recess 23 defines an access to the graspable element 9 when the vehicle rear door 4 is closed.
The rest position of the handle lever 6 corresponds to the position of the handle lever 6 when it is not used by a user. The opening position of the handle lever 6 corresponds to the position of the handle lever 6 when a user grasps the graspable element 9 and rotates the handle lever 6 around the handle lever axis A in order to open the door 4.
The handle lever 6 rotation around the handle lever axis A between the rest position and the opening position is comprised between 30° and 50°, preferably the rotation of the handle lever 6 is of 40°.
When the handle lever 6 is mounted on the vehicle 1, the handle lever axis A is slightly inclined of about 5° to 20° with respect to a vertical axis, preferably of about 11° (
The handle lever 6 at one end comprises a control cam 10 intended to cooperate with the through-opening 8 and the kinematic system as described below. In the present embodiment, the control cam 10 has a general shape of a part of a torus, which may also be described as a curved finger. This shape allows for a good integration of the control cam 10 in the handle frame 5, more particularly, this shape allows for a better integration of the handle lever 6 through the through-opening 8.
The handle lever 6 is received in the elongated bowl 7 with one end received at the bottom end of the elongated bowl 7 and the other end received in the opposite end of the elongated bowl 7 with the control cam 10 disposed through the through-opening 8. A gasket 11 having a shape complementary to the shape of the edges of the through-opening 8 and of a part of the elongated bowl 7 is disposed between the control cam 10 and the through-opening 8.
The kinematic system allows a transmission of the rotational movement of the handle lever 6 to a latch mechanism (not represented) in order to unlatch the door when the handle lever 6 reaches its opening position. The kinematic system comprises a kinematic lever 12 and a Bowden cable 13.
The kinematic lever 12 is disposed on the rear face of the handle frame 5. The kinematic lever 12 is coupled to the handle lever 6 and rotatively mobile with respect to the handle frame 5 around a kinematic lever axis B between a rest position (
The vehicle rear door handle 2 is configured so that when the handle lever 6 reaches the opening position, the kinematic lever 12 reaches its active position as described below.
The kinematic lever axis A of the kinematic lever 12 is disposed between the free end 25 of the handle frame 5 and the elongated bowl 7. Further, the attachment section 14 for the Bowden cable is protruding such that the Bowden cable 13 can be fixed beside the elongated bowl 7. Thanks to this configuration which allows the kinematic lever 12 to be disposed axially above the handle lever 6 when the handle frame 5 is mounted on a vehicle door panel 3, the vehicle rear door handle 2 can be designed more compact because space utilization is optimized. In addition, owing to the fact that the attachment section 14 for the Bowden cable 13 of the kinematic lever 12 is protruding such that the Bowden cable 13 can be fixed beside, i.e., not behind but axially offset, the elongated bowl 7, the rear door handle 2 can further be designed more compact with, in particular, a reduced depth.
The attachment portion 14 protruding from the kinematic lever 12 comprises guiding means and an attaching hole for the Bowden cable 13. The end of the Bowden cable 13 is attached to the attaching hole of the attachment portion 14 in such a way that when the kinematic lever 12 rotates to the active position, the attachment portion 14 pulls on the end of the Bowden cable 13, the other end of which being attached to the latch mechanism, so that when the kinematic lever 12 reaches its active position the latch mechanism releases the door 4.
The kinematic lever 12 rotation around the kinematic lever axis B is of about 20° to 40°, preferably of 30°. This rotation of the kinematic lever 12 ensure a Bowden cable stroke of about 10 to 30 mm, which a stroke sufficient to trigger the latch mechanism.
The return of the kinematic lever 12 to its rest position is ensured by a kinematic spring 15, here a torsion spring disposed in a housing of the kinematic lever 12 (
The kinematic lever axis B is orthogonal to the handle lever axis A (
The kinematic lever 12 presents an abutment 16 formed by a sector shaped blocking tooth. The abutment 16 is intended to cooperate with the reversible inertial security system 17 in order to block rotation of the kinematic lever 12 in the rest position thus preventing an unlatch of the rear door 4. This abutment 16 has the shape of a protruding radial arm in the present embodiment.
The kinematic lever 12 comprises a radial arm 18 cooperating with the control cam 10 of the handle lever 6 so as to transmit the rotation movement of the handle lever 6 to the Bowden cable 13. The radial arm 18 is pushed by the control cam 10 during a rotation of the handle lever 6 from its rest to its opening position in such a way that when the handle lever 6 reaches its opening position the kinematic lever 12 reaches its active position and consequently pulls on the Bowden cable 13 and unlatch the rear door 4. As mentioned before, the control cam 10 has a general shape of a part of a torus, which shape allows for a smooth and fluid rotation of the kinematic lever 12 during the rotation of the handle lever 6 which ensures that there is no blockage felt by a user manipulating the handle lever 6.
The radial arm 18 of the kinematic lever 12 and the abutment 16 of the kinematic lever 12 are angularly offset of less than 150°, in particular less than 120°. This configuration allows for a more compact design of the vehicle rear door handle 2, in particular in the region of the free end 25 of the handle frame 5 which is tapered in the present case.
The procedure for opening a door according to the invention is described below.
At first, the rear door 4 is closed, and the rear door handle 2 is disposed as shown on
In order to open the rear door 4 of the vehicle 1, a user introduces his hand through the recess 23 so as to access the graspable element 9 of the handle lever 6 and manipulates said graspable element 9 in order to rotates the handle lever 6 from its rest position to its opening position.
As mentioned above, during the rotation of the handle lever 6, the control cam 10 pushes the radial arm 18 of the kinematic lever 12 so that when the handle lever 6 reaches the opening position, the kinematic lever 12 reaches its active position (
Thus, the user can open the rear door 4 and access the interior of the vehicle 1.
When the user releases the graspable element 9 of the handle lever 6, the kinematic spring 15 ensures the return of the kinematic lever 12 to its rest position. During this return, the radial arm 18 of the kinematic lever 12 pushes the control cam 10 of the handle lever 6 in order to ensure the return of the handle lever 6 to its rest position.
The reversible inertial security system 17 of the present embodiment is mounted on the rear face of the handle frame 5. It comprises a rocker arm 19, rotatively free with respect to an inertial system axis C and which carries an inertial mass at an end of said rocker arm 19.
The rocker arm 19 is pivotally mounted between a rest position (
The rocker arm 19 comprises in particular an axial finger 20 forming the inertial mass at its radial end that intersects the path of the abutment 16 of the kinematic lever 12, when in blocking position. The rocker arm 19 extends radially with respect to the kinematic lever axis B (
The reversible inertial security system 17 comprises a safety spring 21 dimensioned to put the rocker arm 19 in the rest position in case of no collision and to be overdriven by the force exerted by the inertial mass 20 in case of a collision in order to put the rocker arm 19 in the blocking position. In the present embodiment, the safety spring 21 is a torsion spring. In other embodiments, other type of springs may be used. By tuning the safety spring 21 torque value, the inertial mass 20 and the length of the rocker arm 19, it is possible to select an acceleration value at and above which the rocker arm 19 reaches the blocking position.
The reversible inertial system 17 is in particular configured to block the opening of the door 4 when undergoing accelerations higher than 3 to 5 g, where g is the standard gravity value (approximatively 9.81 m.s−2).
In the present embodiment, the reversible inertial security system 17 is preferably mounted between the free end 25 of the handle frame 5 and the kinematic lever 12. Thanks to this configuration which allows the reversible inertial security system 17 to be disposed axially above the handle lever 6 when the handle frame 5 is mounted on a vehicle door panel 3, the vehicle rear door handle 2 can be designed more compact because space utilization is optimized.
The presence of the inertial security system 17 is optional. Thus, a vehicle rear door handle 2 according to the invention may be provided without it. Further, the location of the inertial security system 17 described in the present embodiment is not limitative. The reversible inertial security system 17 may be disposed at any location which allows it to block an opening of the door in case of a collision. Further, the reversible inertial security system 17 does not necessarily cooperates with the kinematic lever 12 in order to block the opening of the door 4. For example, instead of cooperating with the abutment 16 of the kinematic lever 12, the rocker arm 19 may cooperates directly with the handle lever 6 in order to block a rotation of the handle lever 6 when the rocker arm 19 is in its blocking position.
Furthermore, it is provided that the reversible inertial security system 17 as described above may be used in a vehicle rear door handle 2 as described above by being mounted between the free end 25 of the handle frame 5 and the elongated bowl 7 regardless of the position of the kinematic lever 12. In that case, the reversible inertial security system 17 may block the rotation of the kinematic lever 12 in a way similar to what is described above or block directly the rotation of the handle lever 6. Thus, such a vehicle rear door handle may comprise:
In this alternative rear door handle 2, the reversible inertial security system 17 may comprise any of the features described for the reversible inertial security system 17 of the invention, taken alone or in combination.
Number | Date | Country | Kind |
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21217742.2 | Dec 2021 | EP | regional |