• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Parking brake control device comprising a movable guide (1) between a locking position and an unlocking position of the parking brake, a toothed wheel (2) integral in rotation with a transmission shaft, and a locking lever (3) swinging between an unlocking position away from the gear wheel and a locking position between the teeth (2a) thereof under the combined action of the guide (1), an engagement spring (7) and a release spring (9), characterized in that the guide (1) carries a stop (11) limiting the tilting of the lever (3) in the direction of the toothed wheel (2) when the guide is in the unlocked position to avoid contact of the lever with the parking wheel.
    公开号:FR3038685A1
    申请号:FR1556432
    申请日:2015-07-07
    公开日:2017-01-13
    发明作者:Antoine Vignon；Mathieu Leleu
    申请人:Renault SAS；Nissan Motor Co Ltd；
    IPC主号:
    专利说明:

    The invention relates to a parking brake control device for locking a transmission shaft of a motor vehicle, and particularly of the transmission shaft, at the exit of a box. automatic gearbox, or a gearbox.
    More specifically, it relates to a parking brake control device comprising a guide movable between a locking position and an unlocking position of the parking brake, a toothed wheel in rotation with a transmission shaft, and a lever. blocking device between an unlocking position away from the gear wheel and a locking position between the teeth thereof, under the combined action of the guide, an engagement spring, and a spring clearance.
    In vehicles equipped with an automatic gearbox, or an electric motor associated with a gearbox, the driver shall have a multi-position control switch, including at least the following: "forward" (D), "Reverse" (R), "neutral point" (N) and "parking" (P). The lever transmits its position to the gearbox or gearbox via a cable or linkage. The parking position corresponds to a parking state of the vehicle, in which the movement of the vehicle must be prohibited. For this, the transmission shaft of the gearbox or reducer is immobilized, which prevents the rotation of the drive wheels of the vehicle, and immobilizes it.
    By the publication FR 2 878 487, there is known a locking mechanism of a motor vehicle transmission shaft of the type comprising a toothed parking wheel, integral in rotation with the transmission shaft, and a locking lever which carries a finger blocking device which can be received in a slot of the toothed wheel. The locking lever is pivotally mounted about a tilting axis, between an armed angular position in which the locking finger engages between two teeth of the parking wheel, and an unobstructed angular position. The mechanism comprises a release spring applying a constant force on the locking lever so as to push it towards said unobstructed angular position. It also includes a return spring, which holds the finger in a position not engaged, when the control lever of the gearbox is in position R, N or D.
    This spring is sized today to hold your finger in all road conditions, including potholes, or strong decelerations. The safety rules in this area impose an oversizing of the return spring, as well as the cocking spring. Oversizing the springs imposes on the driver a high effort to actuate the selector between one or other of the operating positions.
    The present invention aims to overcome this drawback of known control devices, by an adaptation measure, simple to implement on the latter.
    For this purpose, it proposes that the guide responsible for the tilting of the locking lever carries a stop limiting its tilt towards the gear when the guide is in the unlocked position, to avoid contact of the lever with the parking wheel.
    In a particular embodiment of the invention, the abutment comes into contact with a prohibition finger fixed on the lever so as to prevent it from tilting towards the toothed wheel.
    The stop is advantageously supported by an arm moving with the guide.
    Preferably, the stop is articulated on the arm, and pivots about a fixed axis, so as to deviate from the prohibition finger, when the guide moves from its unlocking position to its locking position.
    The present invention will be better understood on reading the following description of a non-limiting embodiment thereof, with reference to the appended drawings, in which: FIG. 1 represents the device proposed in the unlocking position, and FIG. 2 shows the same device in the locking position.
    The device shown diagrammatically in the figures, comprises a guide 1 movable between a locking position and an unlocking position of the parking brake, a toothed wheel 2, integral in rotation with a transmission shaft, and a locking lever 3, tilting between an unlocking position away from the gear and a locking position where it is engaged between the teeth 2a thereof. The guide 1 is in the form of a mobile carriage, moving in translation along a rigid support 4 (under the control of a non-detailed intermediate control system), comprising an anchoring point 6 for the end of a cable or actuating rod. Between Figure 1 and Figure 2, the guide 1 extends to the left, so as to impose the lever 3, to switch towards the toothed wheel 2, under the constraint of a cam or guide rail appropriate internal, not shown. An engagement spring 7, wound around a rod 8 of the guide 1, bears against it, to hold it in abutment against the locking lever 3.
    In this device, the movement of the locking lever 3 between its two positions takes place under the combined action of the guide 1, the engagement spring 7, and a release spring 9, mentioned in the drawings s.
    The guide 1 carries a stop 11 limiting the tilting of the lever 3 in the direction of the wheel 2, when the guide 1 is in the unlocked position to avoid contact of the lever 3 with the wheel 2. When the guide 1 is in the unlocking position, the abutment 11 comes into contact with a prohibition finger 12 fixed on the lever, and rests on it, so as to prevent the tilting of the lever 3 in the direction of the toothed wheel 2. The stop is supported by an arm 13 fixed on the guide 1, and moving with it. The arm 13 is connected to the abutment 11 by a pivot connection (axis, pin or other). The abutment 11 can rotate about its axis 14, which is fixed. Depending on its position, the stop may or may not be in contact with the locking finger 12 of the locking lever 3.
    In the nonlimiting embodiment of the invention illustrated by the figures, the stop 11 is articulated on the arm 13. It pivots about its fixed axis 14, so as to deviate from the prohibition finger, when the guide 1 moves from its unlocking position to its position of locking the parking brake.
    In the unlocking position (see FIG. 1), the locking lever 3 is disengaged from the wheel 2. The stop 11 is in contact with the prohibition finger, and limits the movement of the lever 3, to avoid its contact with the parking wheel 2.
    When the parking brake is actuated, the guide 1 rotates the abutment 11 around its axis 14 by releasing the finger 13 (see FIG. 2). In this position, the stop 11 can not oppose the engagement of the lever 3 between the teeth 2a of the toothed wheel 2.
    In position P, the stop is unlocked, to allow engagement of the parking finger. When the gear selector is in position R, N or D, the stop inserted in the device has a rigid damping. This stop prevents contact of the locking lever with the parking wheel, especially in rough driving conditions or sudden driving, with the desired level of security. Indeed, the position is maintained by the support between two parts that do not rotate. Thanks to the proposed arrangement, it is possible to reduce the dimensioning of the return spring by at least a factor of three, which also makes it possible to reduce the total dimensioning of the other springs of the device (cocking spring and, if necessary, billing spring), to improve the performance of the gear selector.
    权利要求:
    Claims (4)
    [1" id="c-fr-0001]
    Parking brake control device comprising a movable guide (1) between a locking position and an unlocking position of the parking brake, a toothed wheel (2) integral in rotation with a transmission shaft, and a lever blocking device (3) swinging between an unlocking position away from the gear wheel and a locking position between the teeth (2a) thereof under the combined action of the guide (1), a spring of engagement (7) and a release spring (9), characterized in that the guide (1) carries a stop (11) limiting the tilting of the lever (3) in the direction of the toothed wheel (2) when the The guide is in the unlocking position to avoid contact of the lever with the parking wheel.
    [2" id="c-fr-0002]
    2. Control device according to claim 1, characterized in that the stop (11) comes into contact with a prohibition finger (14) fixed on the lever (3) so as to prevent its tilting towards the gear wheel (2) when the guide is in the unlock position.
    [3" id="c-fr-0003]
    3. Control device according to claim 1, 2 or 3, characterized in that the stop (11) is supported by an arm (13) moving with the guide (1) ·
    [4" id="c-fr-0004]
    4. Control device according to claim 3, characterized in that the stop (11) is articulated on the arm (13) and pivots about a fixed axis (4), so as to deviate from the prohibition finger (13) when the guide (1) moves from its unlocking position to its locking position.
    类似技术:
    公开号 | 公开日 | 专利标题
    WO2017006008A1|2017-01-12|Parking brake control device
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    FR2660392A1|1991-10-04|MOTORIZED TRANSMISSION GEAR CHANGE CONTROL DEVICE FOR A GEARBOX, PARTICULARLY FOR MOTOR VEHICLES.
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    FR2716948A1|1995-09-08|Motor vehicle having an automatic gearbox and a mechanical locking device for reversing.
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    FR2698658A1|1994-06-03|Automatic actuating device for sliding door, especially for a motor vehicle.
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    EP3233587B1|2019-09-18|Antitheft device for steering column
    FR2923798A1|2009-05-22|Lever reciprocating rectilinear movement transforming mechanism for nautical craft, has roller maintained and retained in notches to modify distance between force reception and application points to modify transmission torque of mechanism
    WO2014016501A1|2014-01-30|Device for mounting in a support housing a transmission and selection element secured to a control lever of a motor vehicle mechanical gear box
    EP1946980A1|2008-07-23|Device for protecting pedestrians in the event of a frontal crash with an automobile and automobile equipped with such a device for protecting pedestrians
    同族专利:
    公开号 | 公开日
    FR3038685B1|2018-06-22|
    WO2017006008A1|2017-01-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4369867A|1980-09-11|1983-01-25|Ford Motor Company|Automatic transmission parking brake mechanism|
    DE102005002441A1|2005-01-19|2006-07-27|Zf Friedrichshafen Ag|Park locking mechanism for automatic transmission/automatic, manual transmission of motor vehicle, has locking unit engaged in groove, edge or recess of ratchet for positive locking of ratchet, in drive operation|
    DE102008054469A1|2008-12-10|2010-06-17|Zf Friedrichshafen Ag|Parking lock device for motor vehicle transmission, has bolt blockingly intervened in parking lock wheel during insertion of parking lock, where bolt is form-fittingly securable during mounting of parking lock|
    GB2467378A|2009-02-02|2010-08-04|Gm Global Tech Operations Inc|Transmission with a lock that prevents accidental park pawl reengagement|
    DE102010001865A1|2010-02-12|2011-08-18|ZF Friedrichshafen AG, 88046|Parking lock device for gear box of motor car, has lock pawl locked with parking lock wheel by fuse element, while laying-out of parking lock in outer intervention, where fuse element is designed as swingable spring loaded locking lever|
    CN101973209A|2010-10-21|2011-02-16|浙江吉利汽车研究院有限公司|Parking mechanism of automotive automatic transmission|FR3093551A3|2019-03-07|2020-09-11|Renault S.A.S.|PARKING BRAKE CONTROL DEVICE AND METHOD|FR2878487B1|2004-11-30|2007-01-05|Renault Sas|LATCHING MECHANISM OF A TRANSMISSION SHAFT OF A MOTOR VEHICLE|FR3067781A1|2017-06-14|2018-12-21|Peugeot Citroen Automobiles Sa|LATCHING SYSTEM OF A MOTOR VEHICLE TRANSMISSION COMPRISING A LOCKING LEVER|
    CA3104933A1|2018-07-05|2020-01-09|Hardcore Automotive Locking TechnologiesLtd|A retro-fittable vehicle lock|
    FR3098265A1|2019-07-02|2021-01-08|Psa Automobiles Sa|PARKING BRAKE CONTROL DEVICE|
    法律状态:
    2016-07-21| PLFP| Fee payment|Year of fee payment: 2 |
    2017-01-13| PLSC| Search report ready|Effective date: 20170113 |
    2017-07-24| PLFP| Fee payment|Year of fee payment: 3 |
    2018-07-25| PLFP| Fee payment|Year of fee payment: 4 |
    2020-07-21| PLFP| Fee payment|Year of fee payment: 6 |
    2021-07-27| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1556432A|FR3038685B1|2015-07-07|2015-07-07|PARKING BRAKE CONTROL DEVICE|FR1556432A| FR3038685B1|2015-07-07|2015-07-07|PARKING BRAKE CONTROL DEVICE|
    PCT/FR2016/051517| WO2017006008A1|2015-07-07|2016-06-21|Parking brake control device|
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