EP3877678A1 - Procede et dispositif de controle de l'engagement d'un doigt de parking - Google Patents
Procede et dispositif de controle de l'engagement d'un doigt de parkingInfo
- Publication number
- EP3877678A1 EP3877678A1 EP19797312.6A EP19797312A EP3877678A1 EP 3877678 A1 EP3877678 A1 EP 3877678A1 EP 19797312 A EP19797312 A EP 19797312A EP 3877678 A1 EP3877678 A1 EP 3877678A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plate
- park
- parking brake
- functional
- transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
- F16H63/48—Signals to a parking brake or parking lock; Control of parking locks or brakes being part of the transmission
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
- F16H63/48—Signals to a parking brake or parking lock; Control of parking locks or brakes being part of the transmission
- F16H63/483—Circuits for controlling engagement of parking locks or brakes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/3425—Parking lock mechanisms or brakes in the transmission characterised by pawls or wheels
- F16H63/3433—Details of latch mechanisms, e.g. for keeping pawls out of engagement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/3458—Parking lock mechanisms or brakes in the transmission with electric actuating means, e.g. shift by wire
- F16H63/3466—Parking lock mechanisms or brakes in the transmission with electric actuating means, e.g. shift by wire using electric motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed- or reversing-gearings for conveying rotary motion
- F16H59/68—Inputs being a function of gearing status
Definitions
- TITLE METHOD AND DEVICE FOR CONTROLLING THE ENGAGEMENT OF A PARKING FINGER
- the present invention relates to the control of the parking finger for any gearbox, automatic, automated or robotized.
- a parking brake finger responsible for blocking or unblocking a transmission shaft, under the control of a rotary table of motorized selection which abuts against the transmission casing at both ends of its travel, and comes to rest between them in a first functional engagement position, Park, or in a second functional release position, not Park, of the finger when the engine stops exerting torque on it.
- the invention also relates to a device for implementing a method.
- the immobilization of a vehicle by its parking brake is generally ensured, by the engagement of a parking finger between the teeth of a toothed wheel secured to a transmission shaft of the vehicle, for example a shaft of the gearbox or differential.
- the publication FR 2 956 180 describes a parking brake mechanism comprising an actuating lever external to the gearbox, which receives the end of a control cable on a ball joint, itself connected to a driver control selector, having several transmission operating positions, for example a parking position, reverse (neutral) and forward (drive) or on
- the external lever is integral with an internal control pin, on which a control plate is fixed, acting on the parking finger.
- the control plate has a notched functional selection zone, consisting of alternating protrusions. Each trough corresponds to the selection of one of the operating positions, among which at least one engagement position and a parking finger release position.
- the plate cooperates with billing means fixed to the casing of the box, capable of elastically retaining the plate in each of these positions.
- TRS Transmission Range Sensor
- the present invention aims to provide the internal function of control of motorized parking brake engagement, without using a physical position sensor.
- the angular displacements of the plate between its stop positions be measured and incremented in a unit for calculating the transmission, to determine whether the Park or non-Park functional position of the plate reached after each cut of the engine. drive, corresponds to the control instruction given to the plate drive motor, by the transmission.
- a learning phase is carried out during a first use of the vehicle, consisting in:
- the corresponding control system includes:
- a turntable activated by an actuating motor, mechanically connected to a parking brake finger so as to move the latter between an engagement position between two teeth of a parking brake wheel and a release position away from them, a mechanical means for retaining the plate in its functional positions for engaging and releasing the parking brake, and
- - a calculation unit able to identify the positions of the plate and to increment its angular displacements.
- FIG. 1 is an overview of a parking brake engagement mechanism.
- FIG. 2 shows the arrangement of the internal control plate of the mechanism in the gearbox housing.
- FIG. 3 illustrates the operation of the mechanism at the level of the control plate.
- the parking brake engagement mechanism of [Fig. 1] is arranged partly inside the gearbox casing 3. It is composed of an engagement trigger 1, carrying a finger la, engaged on the diagram between two teeth 2a of a parking wheel 2, integral of a shaft (not shown) of the gearbox 1.
- the mechanical connection between an external lever 4, and the trigger 1 is composed of an axis 5 integral in rotation with the lever 4, which penetrates inside the casing 3, and actuates a pusher 6, by means of several return pieces 7a to 7d.
- the mechanism In the diagram, the mechanism is in the Park position. The trigger is pushed against the parking wheel, by the pusher 6. In the Neutral, Reverse and Drive position (not shown), the pusher 6, does not exert its action, on the trigger 1.
- the external lever 4 of [Fig. 1] is actuated for example by a control cable (not shown), from a selector available to the driver.
- the control axis 5 is motorized.
- the proposed control device includes in particular:
- a rotary table actuated by a drive motor, mechanically connected to a parking brake finger (such as that of [Fig. 1] so as to move the latter between an engagement position between two teeth 2a of a parking brake wheel 2, and a release position away from them,
- a calculation unit capable of identifying the positions of the plate 9 and of increasing its angular displacements.
- the selection plate 9 rotates with the axis 5. It has a functional area 9a comprising two recesses 9b, 9c separated by a bump 9d. The two recesses correspond to the Park and not Park positions of the parking brake.
- the plate also includes two end stops 9e, 9f, meeting support planes 3a, 3b of the transmission casing 3 at the end of the race.
- the functional area 9a scrolls past an indexing or mechanical retaining system fixed on the casing, such as a billing system (not shown).
- the recesses 9b, 9c determine the functional selection positions, for example a position P (Park) and a non-Park position (giving access to the modes N, D, R, etc.). They ensure the indexing of the plate 9 in these positions, by cooperating with the cited retaining means.
- the arrival in abutment of the plate 9 is detected for example by the observation of an electrical overconsumption of its drive motor, which will endeavor to continue to rotate the axis, while a mechanical stress 1 'prevents it.
- the mechanical means for retaining the plate in its Park and not Park functional positions is for example a billing system, of which only the ball 11 is shown in [FIG. 3]. There is shown schematically thereon, the two support planes 3a, 3b of [Fig.2]. The functional area 9a of the plate 9, with the two recesses 9b, 9c and the boss 9d. The ball appears three times, positions A, B, C respectively, against a stop plane 3a of the housing and in the two recesses 9a, 9b.
- the plate rotates in front of the ball 11, which for its part moves in a substantially radial direction relative to the plate.
- the plate 9 rotates with the axis 5, its functional zone scrolls.
- the ball 11 advances into the recesses 9a or 9b. from the plateau to the passage of it. If the torque of the drive motor disappears, the chainring is mechanically retained in the Park or non-Park position.
- These two corresponding angular positions of the plate are reference positions for the parking finger control device. They are transmitted to the engine or transmission computer (ECU) during its configuration (calibration or configuration).
- the engagement of the Park position therefore depends on the position of the mechanical part (here the ball 11) stationary relative to the hollows 9a, 9b of the plate which pass in front of it during the rotational movement of the plate 9.
- the method proposed by the invention makes it possible to control, without a physical position sensor, the engagement and disengagement of a transmission parking brake finger between two teeth of a parking brake wheel, under the control of a motorized selection rotary table which abuts against the transmission casing at both ends of its travel and comes to rest between them in a first functional engagement position (Park) or in a second functional engagement position (non-Park ) the parking finger when the engine ceases to exert a torque on it.
- the invention thus makes it possible to eliminate this position sensor by implementing an incremental counter, or “sensor” within the actuator.
- a learning phase is carried out in order to know the position of the axis, consisting of:
- the plate is moved from its initial position to a lateral abutment of the plate 9, therefore determining a reference position.
- the arrival in abutment of the plate 9 can be determined by an excessive current consumption of the drive motor.
- the axis is then returned to its initial position by performing the same movement of the axis as previously, but in the opposite direction.
- the relative position of the axis relative to the stop is therefore known.
- the position of the troughs (Park and not Park) was for example specified during configuration or calibration of the computer (ECU).
- the incremental sensor is used to quantify the angular displacement of the axis and the plate, its amplitude and its direction. From this information, each time the ball 11 engages in one of the recesses 9b, 9c, the computer knows how to determine in which recess the ball is engaged, therefore whether the Park position is engaged or not. The subsequent displacements of the plate are incremented in order to be able to identify at each subsequent cut of the drive motor, the Park or non-Park functional position of the plate.
- the initial position having been determined by learning, during each subsequent movement of the axis 5, its new position is determined relative to the previous position, using the incremental sensor. If, for example, the axis is 50 ° from the stop position against the support plane of the casing 3a adjacent to the position P before a movement of 10 ° in the direction of the support plane 3a, its position changes to 40 ° of it.
- the position of the axis must be memorized regularly, so as not to have to re-learn each time the vehicle is started. However, in the event of a sudden loss of power, this information may be lost. A new learning must then be carried out, in turning the axis in the direction of the request requested (Park or not Park) until the plate comes into abutment against the casing.
- the tray is in the "Park” position (position B of the ball 11 in the diagram), and the driver requests the Park position
- the drive motor is activated in the phase of learning to rotate the axis in the "Park” direction, up to the stop plane 3a (movement of the ball 11 to the left of the diagram until reaching position A).
- the computer locates the angle traveled between the "Park” position and the stop 3a on the Park side. He deduces from this that the axis was in the Park position, replaces the tray with the same position, and stores its position.
- the present invention has many advantages, linked to the elimination of the usual TRS sensor, among which the reliability of the new process and the space saving resulting from this suppression.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
- Regulating Braking Force (AREA)
- Control Of Transmission Device (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1871408A FR3088401B1 (fr) | 2018-11-08 | 2018-11-08 | Procede et dispositif de controle de l’engagement d’un doigt de parking |
| PCT/EP2019/080609 WO2020094813A1 (fr) | 2018-11-08 | 2019-11-07 | Procede et dispositif de controle de l'engagement d'un doigt de parking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3877678A1 true EP3877678A1 (fr) | 2021-09-15 |
Family
ID=67956816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19797312.6A Pending EP3877678A1 (fr) | 2018-11-08 | 2019-11-07 | Procede et dispositif de controle de l'engagement d'un doigt de parking |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US11708907B2 (fr) |
| EP (1) | EP3877678A1 (fr) |
| JP (1) | JP2022506791A (fr) |
| KR (1) | KR20210076151A (fr) |
| CN (1) | CN113167383A (fr) |
| BR (1) | BR112021008648A2 (fr) |
| FR (1) | FR3088401B1 (fr) |
| WO (1) | WO2020094813A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7643092B2 (ja) * | 2021-03-04 | 2025-03-11 | ニデック株式会社 | パーキング機構、および駆動装置 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160025214A1 (en) * | 2014-07-23 | 2016-01-28 | Denso Corporation | Controller and shift-by-wire system using the controller |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3905326B2 (ja) * | 2001-04-25 | 2007-04-18 | 株式会社デンソー | 自動変速機のシフトレンジ切換装置 |
| JP3871334B2 (ja) * | 2003-12-26 | 2007-01-24 | 株式会社ツバキエマソン | 押し付け停止型電動シリンダ |
| JP2008128470A (ja) * | 2006-11-24 | 2008-06-05 | Aisin Aw Co Ltd | 自動変速機のパーキング装置 |
| JP4179388B1 (ja) * | 2007-05-24 | 2008-11-12 | トヨタ自動車株式会社 | 車両用制御装置 |
| JP2009162346A (ja) * | 2008-01-09 | 2009-07-23 | Toyota Motor Corp | ディテント機構および自動変速機 |
| JP4535174B2 (ja) * | 2008-07-11 | 2010-09-01 | トヨタ自動車株式会社 | 車両の制御装置および制御方法 |
| FR2956180A1 (fr) | 2010-02-05 | 2011-08-12 | Renault Sas | Levier interne de frein de parking pour boite de vitesses et dispositif de frein de parking |
| JP6062298B2 (ja) * | 2013-03-26 | 2017-01-18 | 日立オートモティブシステムズ株式会社 | 自動変速機のレンジ切換え装置 |
| US9150214B2 (en) * | 2013-07-18 | 2015-10-06 | Fca Us Llc | Techniques for robust park lock control |
| JP6173875B2 (ja) * | 2013-10-24 | 2017-08-02 | 日立オートモティブシステムズ株式会社 | 自動変速機のレンジ切換装置 |
| US10041591B2 (en) * | 2015-07-13 | 2018-08-07 | Ford Global Technologies, Llc | Transmission park mechanism |
| DE102017103317A1 (de) * | 2017-02-17 | 2018-08-23 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Parksperre für ein Automatikgetriebe sowie Verfahren zum Betreiben einer solchen Parksperre |
-
2018
- 2018-11-08 FR FR1871408A patent/FR3088401B1/fr active Active
-
2019
- 2019-11-07 US US17/279,189 patent/US11708907B2/en active Active
- 2019-11-07 JP JP2021524384A patent/JP2022506791A/ja active Pending
- 2019-11-07 CN CN201980076587.5A patent/CN113167383A/zh active Pending
- 2019-11-07 BR BR112021008648-0A patent/BR112021008648A2/pt active Search and Examination
- 2019-11-07 KR KR1020217017209A patent/KR20210076151A/ko active Pending
- 2019-11-07 WO PCT/EP2019/080609 patent/WO2020094813A1/fr not_active Ceased
- 2019-11-07 EP EP19797312.6A patent/EP3877678A1/fr active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160025214A1 (en) * | 2014-07-23 | 2016-01-28 | Denso Corporation | Controller and shift-by-wire system using the controller |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020094813A1 (fr) | 2020-05-14 |
| KR20210076151A (ko) | 2021-06-23 |
| FR3088401A1 (fr) | 2020-05-15 |
| CN113167383A (zh) | 2021-07-23 |
| FR3088401B1 (fr) | 2020-10-23 |
| JP2022506791A (ja) | 2022-01-17 |
| US11708907B2 (en) | 2023-07-25 |
| US20220003314A1 (en) | 2022-01-06 |
| BR112021008648A2 (pt) | 2021-08-10 |
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| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: NISSAN MOTOR CO., LTD. Owner name: RENAULT S.A.S |
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Owner name: NISSAN MOTOR CO., LTD. Owner name: AMPERE SAS |