• 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:
    The invention relates to a drum brake 1, 1 'for a "simplex" operating vehicle, in particular with hydraulic operation as a service brake. This brake device comprises a second electric actuator 2 including a linear actuating assembly 21 formed by screw-nut mechanism 211, 212 arranged to move bearing parts 202, 203 in a translation, in spacing or a connection under the effect a rotation drive by a mechanical transmission 31, 32, 33, 34 to two non-coaxial parallel planetary gear trains mounted head to tail, driven by an electric motor M outside the tray. This second actuator thus achieves a wear-compensating mechanism by reducing the play, but also increasing to eliminate the residual braking. Optionally, this second actuator also performs parking brake operation, and / or automated assistance braking. The invention also proposes a process for industrializing such a brake by integrating the design or installation into the mounting of such an actuator to replace an RAI rod.
    公开号:FR3031151A1
    申请号:FR1463441
    申请日:2014-12-30
    公开日:2016-07-01
    发明作者:Alberto Molinaro；Christophe Dupas；Gerard Luu；Cedric Guignon
    申请人:Foundation Brakes France SAS；
    IPC主号:
    专利说明:

    [0001] The invention relates to a drum brake for a simplex type of operating vehicle. The invention relates to a drum brake for a simplex-type operating vehicle. ", in particular with hydraulic operation as a service brake. This brake device comprises a second electric actuator including a linear actuation assembly formed by a screw-nut mechanism arranged displacing support parts in a translation, in spacing or a reconciliation under the effect of a rotary drive by a mechanical transmission to two non-coaxial parallel planetary gear trains mounted head to tail, driven by an electric motor M outside the tray. This second actuator thus realizes a mechanism for compensating for wear by reducing the play, but also increasing to eliminate the residual braking. Optionally, this second actuator also performs parking brake operation, and / or automated assistance braking. The invention also proposes a method of industrializing such a brake 20 by integration with the design or installation of the mounting of such an actuator to replace an RAI rod. State of the art The field of the invention is that of road vehicle brakes, in particular light and utility motor vehicles, and in particular four-wheel vehicles. In such a vehicle, the service brake function is mainly to slow down the vehicle and get off. In most current automobiles, the service brake is provided by drum brakes or disc brakes, or disc brakes at the front of the vehicle and rear drum vehicles. The function of parking brake or parking brake is to maintain a vehicle immobilized continuously for long periods. The emergency brake function consists in slowing down a vehicle in an exceptional manner, for example in the event of failure of the service brake control circuit. Very often, this operation is performed by the same mechanism as the parking brake, and usually only on the rear brakes.
    [0002] For a long time, the brakes have usually been operated by a hydraulic pressure for the service brakes, and for parking brakes by pulling a cable in general using a ratchet lever. Over the past ten years, it has become commonplace to provide an automated parking brake management system by a computer that controls an electric actuator. The electric actuator is often located outside the brake itself, and operates for example by exerting traction on a cable instead of the manual control. Such external management has various disadvantages, for example complexity and cost of manufacture and maintenance. In many vehicles, the parking brake is provided by a drum brake mechanism. FIG. 1 illustrates a drum brake 9 of a conventional type in the state of the art, as used in road vehicles and more particularly automobiles or light commercial vehicles. This mechanism comprises a drum 15 coaxial with a wheel of which it is integral, carrying a skirt capping two segments 12, 13 in arcs mounted face to face about its axis of rotation Al on a plate 10, which is fixed relative to the half-train carrying the wheel. In its service brake function to slow down and stop the vehicle, this brake is actuated by a hydraulic actuator 11. It is provided with two opposed pistons which separate the movable ends of the segments to put their pads 123, 133 in support against the friction track 13 of the drum, while the other ends of the segments bear against an anchor plate 18 integral with the plate. The parking brake is activated by means of a lever 97 pulled by a cable 99 actuated and maintained under tension by a control lever disposed in the passenger compartment and provided with a ratchet mechanism. In the drum brake, the lever 97 pivots on the movable end of a segment 12, and away from the opposite segment 13 by a reaction rod 98. This reaction rod is for example articulated to a end on this lever 97 and at the other end on the opposite segment 13.
    [0003] With the wear of the gaskets, the segment spacing required to reach their clamping position increases as the thickness of the gaskets decreases. In order to maintain an acceptable clearance between this clamping position and the rest position to which they return under the effect of the return springs 101, it is most often provided with an automatic mechanical system which makes it possible to modify this rest position to make up for this extra game caused by wear. In a drum brake used as a service brake, there is a catch-up rod of this wear set, most often of the type Automatic Incremental Retraction (RAI). It is located between the two segments, on the side of the hydraulic actuator, therefore on the opposite side to the anchor stop fixed to the plate. This rod elongates itself when the clearance exceeds a certain length, under the effect of the wear of the linings and the drum, for example by a screw carrying a nut blocked by a pawl. It thus plays a purely passive role, which consists only in modifying the rest position at a moment when it does not undergo any effort of the segments. In this FIGURE 1 is illustrated the implementation of such an incremental automatic catch-up rod. This rod 14 has two ends 142, 143 on which the segments 12, 13 come to bear rest. During tightening, the ratchet mechanism visible on the left side of the rod allows both ends to move away automatically by an additional ("incremental") length whenever the segment spacing has a greater than a certain stroke. threshold. The operation of such a mechanism is generally irreversible and can sometimes have disadvantages. The catching up can for example become too important and provide an insufficient rest game, for example as a result of thermal variations of the dimensions. This results in residual braking which causes additional wear and overconsumption of fuel. There are technologies for electrically locking this link, which prevent the retrofit if the conditions may lead to such over-adjustment. However, identifying these conditions is sometimes difficult to assess, and the system may be insufficient.
    [0004] An object of the invention is to overcome the drawbacks of the state of the art, and in particular to provide a more precise, more reliable and / or more adaptable play catch-up function. A goal is also to provide a brake producing more functions and / or a better compromise, for example between the efficiency, the number and the performance of its functions and a low weight and bulk. This goal is sought in conjunction with advantages in terms of simplicity, cost and reliability, manufacturing and maintenance.
    [0005] SUMMARY OF THE INVENTION The invention proposes a drum brake device for a road vehicle, in particular an automobile vehicle, of the type causing a braking torque between a drum and a plate in rotational movement with respect to each other. by absorption of energy under the effect of a friction between, on the one hand, a friction track forming a cylinder of revolution and which is carried by an inner surface of said drum, and on the other hand friction linings carried by first and second segments disposed within said cylinder and transmitting the braking torque to said plate at least by said anchoring member forming a stop 25 for an abutment end of said segments. In this type of brake, said friction is obtained by a spacing of said segments outwards, by at least a first service brake actuator, typically a hydraulic cylinder, pressing a so-called mobile end of each of said segments, performing a functioning of type "simplex".
    [0006] According to the invention, this brake device comprises a second electric actuator including a linear actuation assembly formed by at least two threaded elements cooperating with each other to form an arranged screw-nut mechanism which displaces said support parts in a translational manner. tangentially, typically parallel to the direction of separation of the service brake actuator. This movement achieves spacing or approximation under the effect of a rotational drive by a mechanical transmission driven by an electric motor. This second actuator thus realizes a wear compensating mechanism 5 provided with two bearing parts each cooperating with the moving end of one of the two segments, so as to compensate for the increase in clearance between the resting positions and resulting from the wear of the gaskets. According to different particularities advantageously combined between them: the electric motor driving the linear actuating assembly is fixed on the plate on the opposite side with respect to the segments, that is to say outside the brake mechanism, the transmission being thus arranged so as to cross the plate. The motor is arranged with its axis parallel to the direction of translation of the linear actuating assembly, preferably above the axis of the wheel. - The mechanical transmission between the motor and the linear actuating assembly is of an invertible type providing a linear actuation 20 in both directions depending on the direction of rotation of the motor. transfers of forces within the mechanical transmission between the motor and the linear actuation assembly are made solely by meshing of pinions with axes parallel to one another, which makes compactness and simplicity of manufacture possible. The mechanical transmission between the motor and the linear actuating assembly comprises a plurality of planetary gear trains parallel to each other but not coaxial with each other. Such an architecture allows a significant reduction rate in a large compactness in length. It also provides an axis offset between the external motor and the thrust direction of the actuator, which facilitates the positioning of the motor outside the brake. Optionally, the transmission is also reversible, that is to say for example that it does not include force transmission with an irreversible friction angle such as a worm. In addition, advantageously, the second actuator is arranged to move its support portions with a stroke and a sufficient bearing force to bear the segments against the drum with a sufficient clamping force to achieve a parking brake and / or emergency brake and / or automated braking function. According to another aspect of the invention, the invention proposes a method of controlling a drum brake as described herein, as well as a braking system comprising such a brake and parameterized to implement this method. According to different features made possible by the characteristics of said brake, these features being combinable with each other at will, this method comprises: - a control of the second actuator so as to reduce the clearance between the rest and clamping positions of the segments in the case detection of an increase in the wear of the linings and / or in the case of receiving a prepositioning control of the segments in anticipation of a next brake command. A control of the second actuator so as to increase the clearance between the resting and clamping positions of the segments in the case of detection of insufficient resting play. It is thus possible to avoid over-adjustment, for example caused by a recovery of wear taking place under specific thermal conditions, which are no longer true after a change in temperature. a command of the second actuator so as to increase the clearance between the resting and clamping positions of the segments of a reception of a positive action control for loosening the segments, for example in case of gluing or during a releasing the parking brake. - A control of the second actuator so as to apply the segments against the drum to perform an automated braking function, including parking brake or emergency or automated braking within a driving assistance function. According to yet another aspect of the invention, there is provided a vehicle or a subassembly of a vehicle comprising a drum brake or a braking system as set forth herein.
    [0007] In yet another aspect, the invention further provides a method of industrializing and / or manufacturing a drum brake, comprising the following steps: - providing a drum brake mechanism (9) comprising a 10 drum coaxial with a wheel which it is integral, wearing a skirt capping two segments in arcs mounted face to face around its axis of rotation on a fixed plate (relative to the half-train which carries the wheel), of the type comprising: on the one hand a hydraulic actuator arranged to perform a service brake function, and on the other hand an automatic wear compensating mechanism connecting two bearing parts cooperating with the movable ends of the segments and operating purely mechanically to move away when the clearance between the resting and clamping positions of the segments exceeds a determined threshold; (Generally irreversibly, typically an RAI-type "Incremental Automatic Retrofit" link) - within said drum brake mechanism, integrating an electromechanical actuator as a second actuator to provide a brake device or a brake actuator. braking system as explained here. Examples of Advantages In the prior art, the rod of the prior art does not produce positive action and can only transmit reaction forces. It does not play any active role either in the parking brake. On the contrary, the actuator of the invention makes it possible to apply a positive action by providing an active force, potentially in two opposite directions. Such an actuator thus makes it possible to perform various other functions in addition to making up play and under more varied conditions. Such an actuator also makes it possible to control a clamping force electrically or even automatically, in many circumstances. It can be used for example in various driving assistance functions, for example traction control. In particular, it also makes it possible to assist or even fully realize the function of parking brake and / or emergency. It thus becomes possible to improve this function by optimizing the clamping force, or even completely canceling any other parking brake mechanism. Thus, the invention proposes to replace the play catch link with an actuator or electromechanical actuator, that is to say actuated by an electric motor. With a hydraulic service brake, it ensures the adjustment of the functional play of the service brake brake. This adjustment is achieved possibly in both directions: in retrofit of wear, or to reduce the residual braking by guaranteeing the release when releasing the parking brake. It also allows a prepositioning in anticipation of use as a service brake, allowing for example a greater speed of braking. This actuator applies to a simplex type FAT, so it has good compatibility with conventional drum brakes, which are of known design, robust and economical, without making substantial modification of the brake itself. The actuator is fixed to the plate and is supported on the segments by anti-rotation grooves. These grooves hold the segments and fight against their uplift. Optionally, in cooperation with the function of hydraulic service brake, such an actuator also performs the function of parking / emergency brake, making it possible to obtain an automated parking brake system, for example with an electric power. 3031151 - 9 - about 120W. It allows a simple and quiet parking brake. This results in economical electrification, with few modifications, and no changes in the service brake, while eliminating the conventional RAI rod.
    [0008] Various embodiments of the invention are provided, incorporating according to all of their possible combinations the various optional features set forth herein.
    [0009] List of Figures Other features and advantages of the invention will become apparent from the detailed description of a non-limiting embodiment, and the accompanying drawings in which: FIGURE 1 is a view along the axis of the wheel which illustrates a hydraulic service brake drum brake according to the state of the art with incremental automatic retraction rod and parking brake lever; FIGURE 2 is a view along the axis of the wheel which schematically illustrates a drum brake mechanism according to a first exemplary embodiment of the invention with electric actuator in play catch and parking brake; FIGURE 3 is a fragmentary perspective view in ladder-scale which illustrates in greater detail the transmission and drive of the brake electric actuator of FIGURE 2; FIGURE 4 is a kinematic diagram illustrating the operation of the electric actuator of FIGURE 2 and FIGURE 3; FIGURE 5 is a view along the axis of the wheel which schematically illustrates a drum brake mechanism according to a second exemplary embodiment of the invention with an electric actuator in play catch and parking brake. DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 of FIG. 2 is a drum brake mechanism 1 according to a first exemplary embodiment of the invention with electric actuator retrofitted with FIG. automated play and braking, in particular parking and emergency braking. This drum brake 1 uses the same operating base as the brake 9 of the prior art illustrated in FIG. 1, and the common elements are represented with the same references.
    [0010] The braking friction is obtained by spacing the segments 12, 13 outwards by a first service brake actuator 11, here a hydraulic cylinder also called "brake cylinder", which bears on the mobile end 121 , 131 of each of said segments, while their abutment ends 122, 132 can bear on the anchoring element 18 fixed to the plate. The two movable ends face each other, and the same for the ends of the stop. This mechanism thus performs a "simplex" type operation. As illustrated in the figures, this brake 1 comprises a second electric actuator 2 including a linear actuating assembly 21 comprising a nut 211 cooperating with a threaded rod 212 them to form a screw-nut mechanism. The threaded rod 212 is fixed in rotation and carries at its end a bearing portion 203 which cooperates with the movable end 131 of one of the 13 segments, in this example both in support and traction. The nut 211 carries an external toothing which enables it to rotate about the direction of linear actuation D2 by the transmission 3 coming from the motor M. This actuating direction D2 is tangential with respect to the axis wheel Al, and is parallel to the direction of separation of the service brake actuator 11.
    [0011] The nut is free in translation in this direction D2 and integral in translation with a thrust rod 214 fixed in rotation, which carries at its end a bearing portion 202 which cooperates with the movable end 121 of the other 12 segments, in this example both in support and traction. The cooperation of the nut 211 with the threaded rod 212, under the effect 3031151 - 11 - of the rotational drive, will thus move apart or closer segments of each other depending on the direction of rotation of the motor M. This actuator is controlled in position, for example by one of the computers of the vehicle or of the braking system, and thus realizes an active wear-compensating mechanism co-operating with the mobile end 121, 131 of the two segments for to compensate for the increase in clearance between the resting and clamping positions which results from wear of the packings 123, 133, 10 as seen in FIGURE 2 and FIGURE 3, and as illustrated in FIGURE 4, the transmission 3 is formed entirely by pinions of axes parallel to each other, and thus forms an invertible transmission by reversing the direction of rotation of the motor M. In FIGURE 1, the only visible part of the actuator 2 is the whole. linear actuator 21, which takes approximately same place and the same size as the rod of RAI 94 brake 9 of the prior art. In many cases, it is thus possible to install this actuator 2 instead of such a link on an existing drum brake model, at the cost of minimal changes in its initial architecture.
    [0012] The electric motor M is arranged outside the plate, directly or via a flexible connection forming a damper, for example a rubber "silent block". Only a small part of the transmission 3 through this plate, here its last intermediate pinion 342 of small diameter, through a window formed in this plate. The 25 changes are minimal and essentially bear only on the tray itself, which is an inexpensive piece. The transmission is made by gear trains with parallel axes, with straight or helical teeth, which allows a robust, economical and energy efficient mechanism.
    [0013] The electric motor is arranged parallel to the actuator, which advantageously combines with the architecture of the transmission and offers the motor good protection against shocks and gravel. This transmission forms a reduction mechanism of which a large part is achieved by two planetary gear trains parallel to each other. A first epicyclic gear train 31 is driven at the input by its central pinion 311 driven directly by the motor shaft M. Its 5 satellites 312 mesh with a fixed ring 313, and drive their planet carrier 314 at the exit. a small input gear 321 driving in parallel two small intermediate gears 322 within a first intermediate cascade 32. This cascade comprises at the output a large gear 323 secured to the input gear 331 of the second epicyclic gear train 33. Its satellites 332 meshing with a fixed ring gear 333, and drive their planet carrier 334 at the exit. This carries a small input pinion 341 driving in parallel two small intermediate pinions 342 within a second intermediate cascade 34.
    [0014] The output gear of this second cascade 34 is formed by the external toothing of the nut 211 of the linear actuating assembly 21. This nut 211 is rotatably abutting on one of the push rods 214 towards a segment 12, while the threaded rod constitutes the other push rod 213 towards the other segment 13.
    [0015] In the present example, and optionally, the bearing portions 202, 203 of the push rods each have a shape preventing their rotation relative to their respective segments. In addition, these bearing portions have a fork shape surrounding the edge of the segment. The stems remain well aligned with their segment. The forces are aligned, which decreases the tendency of the segments to lift relative to the plateau. In this exemplary embodiment, the linear actuator assembly 21 is disposed between the service brake actuator 11 and the axis of the wheel A1, i.e., below the actuator. service when it is located above the axis as in this case. Second Exemplary Embodiment As illustrated in FIGURE 5, in this second embodiment, the linear actuator assembly 21 of the brake 1 'is disposed beyond the service brake actuator 11 by relative to the axis of the wheel, that is to say above the actuator when it is located above the axis. This results in different advantages, for example in terms of logeability with respect to the rest of the vehicle components. Of course, the invention is not limited to the examples which have just been described and many modifications can be made to these examples without departing from the scope of the invention.
    [0016] 10 Nomenclature 1.1 'drum brake 10 plate 101 return springs 11 service actuator 15 12, 13 segments 121, 131 movable ends of segments 122, 132 abutment ends of segments 123, 133 friction pads 15 drum 20 16 track friction 18 anchor stop 2 electric play and parking actuator 202, 203 parts of support on the segments 21 linear actuator assembly 211 external toothing of the nut 212 nut 213 screw - threaded rod 214 push rod nut 3 transmission 30 31 first epicyclic gear train 311 motor gear 312 first gear satellites 313 first gear fixed gear 314 first gear carrier 3031151 - 14 - 32 first intermediate gear cascade 321 first gear input gear 322 intermediate gear of first cascade 323 output gear of first cascade 5 33 second epicyclic gear 331 second gear entry gear 332 second gear train 333 second gear fixed crown 334 second gear carrier 10 34 second intermediate gear cascade 341 second cascade input gear 342 second cascade intermediate gear 94 RAI link 942, 943 RAI link support parts 15 97 parking clamping lever 98 parking brake reaction rod 99 parking brake cable Al wheel axle D2 linear actuation direction 20 M electric motor
    权利要求:
    Claims (14)
    [0001]
    REVENDICATIONS1. Drum brake device (1, 1 ') for a road vehicle, in particular an automobile, of the type causing a braking torque between a drum (15) and a plate (10) in rotational movement with respect to the other, by absorption of energy under the effect of a friction between, on the one hand, a friction track (16) forming a cylinder of revolution and which is carried by an inner surface of said drum, and on the other hand friction pads (123, 133) carried by first and second segments (12, 13) disposed within said cylinder and transmitting the braking torque to said plate at least by said anchoring member (18) forming a stop for an abutment end (122, 132) of said segments, said friction being obtainable by spacing said segments outwardly, by at least one first service brake actuator (11) pressing on a so-called mobile end of each of said segments, said device comprising a wear-catching mechanism provided with two bearing parts each cooperating with the movable end (121, 131) of one of the two segments, so as to catch up with the increase of the clearance between the positions of resting and clamping resulting from the wear of the linings (123, 133), said device being characterized in that it comprises a second electric actuator (2) including a linear actuating assembly (21) formed by at least two threaded elements (211, 212) cooperating with each other to form an arranged screw-nut mechanism which displaces said bearing parts (202, 203) in a translation (D2) effecting a spacing or an approximation, under the effect of a rotation drive by a mechanical transmission (31, 32, 33, 34) driven by an electric motor (M). 30
    [0002]
    2. Device according to the preceding claim, characterized in that the electric motor (M) driving the linear actuating assembly (21) is fixed on the plate (10) of the opposite side relative to the segments (12, 13). 3031151 - 16 -
    [0003]
    3. Device according to the preceding claim, characterized in that the motor (M) is disposed with its axis parallel to the translation direction (D2) of the linear actuating assembly (21).
    [0004]
    4. Device according to any one of the preceding claims, characterized in that the mechanical transmission (31, 32, 33, 34) between the motor (M) and the linear actuating assembly (21) is of a type reversible providing linear actuation in both directions depending on the direction of rotation of the motor.
    [0005]
    5. Device according to any one of the preceding claims, characterized in that the transfer of forces within the mechanical transmission (31, 32, 33, 34) between the motor (M) and the linear actuating assembly (21) are made only by meshing gears with axes parallel to each other.
    [0006]
    6. Device according to the preceding claim, characterized in that the mechanical transmission between the motor (M) and the linear actuating assembly (21) comprises a plurality of epicyclic trains (31, 33) parallel to each other but not coaxial between them.
    [0007]
    7. Device according to any one of the preceding claims, characterized in that the second actuator (2) is arranged to move its support portions (202, 203) with a stroke and a sufficient support force to put in support the segments (12, 13) against the drum (15) with sufficient clamping force to perform a function of parking brake and / or emergency and / or automated braking.
    [0008]
    8. Braking system comprising a drum brake (1, 1 ') according to any one of the preceding claims, characterized in that it comprises electrical control means arranged to control the second actuator (2) so as to reduce the clearance between the resting and clamping positions of the segments (12, 13) in the case of detection of an increase in the wear of the linings (123, 133) and / or in the case of receiving a prepositioning command of the segments in anticipation of a next brake command. 5
    [0009]
    9. Braking system (1, 1 ') comprising a drum brake according to any one of claims 4 to 7, characterized in that it comprises electrical control means arranged to control the second actuator (2) so as to to increase the clearance between the resting and clamping positions of the segments (12, 13) in the case of detection of insufficient resting play and / or in the case of receiving a control of positive action of loosening the segments.
    [0010]
    A vehicle or subassembly comprising a drum brake (1, 1 ') according to any one of claims 1 to 7 or a braking system according to any one of claims 8 to 9.
    [0011]
    11. A method of industrializing and / or manufacturing a drum brake, comprising the following steps: - providing a drum brake mechanism comprising a drum (15) coaxial with a wheel which it is secured, bearing a skirt capping two segments (12, 13) in arcs mounted face to face about its axis of rotation (A1) on a fixed plate (10), of the type comprising: o on the one hand a hydraulic actuator (11) arranged to perform a service brake function, and o secondly an automatic wear compensating mechanism (94) connecting two bearing parts cooperating with the movable ends (121, 131) of the segments and operating purely mechanical to move away when the clearance between the resting and clamping positions of the segments exceeds a determined threshold; within said drum brake mechanism, integrating an electromechanical actuator as a second actuator (2) to provide a brake device (1, 1 ') according to any one of claims 1 to 7; or a braking system according to any of claims 8 to 9.
    [0012]
    12. A method of controlling a drum brake (1, 1 ') according to any one of claims 1 to 7, characterized in that it comprises a control of the second actuator (2) so as to reduce the play. between the resting and clamping positions of the segments (12,
    [0013]
    13), in the case of detection of an increase in the wear of the linings and / or in the case of a reception of a prepositioning control of the segments in view of a next braking. 13. The method of controlling a drum brake (1, 1 ') according to any one of claims 4 to 7, characterized in that it comprises a control of the second actuator (2) so as to increase the clearance between The positions of rest and clamping of the segments (12, 13) in the case of a detection of insufficient play at rest and / or in the case of a reception of a positive action of loosening action; segments.
    [0014]
    14. A method of controlling a drum brake (1, 1 ') according to any one of claims 4 to 7, characterized in that it comprises a control of the second actuator (2) so as to apply the segments (12, 13) against the drum (15) to perform an automated braking function, including parking brake or emergency brake or driving assistance braking. 25
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    同族专利:
    公开号 | 公开日
    FR3031151B1|2018-04-06|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20100096224A1|2008-10-21|2010-04-22|Mando Corporation|Electronic mechanical drum brake|
    DE102012201579A1|2011-02-02|2012-08-02|Continental Teves Ag & Co. Ohg|Electromotive operable drum brake module|
    DE102012205110A1|2011-03-31|2012-10-04|Advics Co., Ltd.|Electric parking brake device|
    WO2014195329A1|2013-06-06|2014-12-11|Continental Teves Ag & Co. Ohg|Drum brake which can be operated by an electric motor|WO2020136329A1|2018-12-28|2020-07-02|Foundation Brakes France|Reduction gearbox for drum brake, offering significant conformability|
    FR3095790A1|2019-05-10|2020-11-13|Foundation Brakes France|CONTROL SYSTEM FOR AN ELECTRIC BRAKE WITH HYDRAULIC ASSISTANCE|
    FR3096634A1|2019-06-03|2020-12-04|Foundation Brakes France|Drum brake actuator gear motor, including a reduction rate of 30 A 210|
    WO2021204833A1|2020-04-09|2021-10-14|Foundation Brakes France|Method and device for controlling a motor vehicle brake|
    法律状态:
    2015-11-23| PLFP| Fee payment|Year of fee payment: 2 |
    2016-07-01| PLSC| Publication of the preliminary search report|Effective date: 20160701 |
    2016-11-21| PLFP| Fee payment|Year of fee payment: 3 |
    2017-11-21| PLFP| Fee payment|Year of fee payment: 4 |
    2019-11-20| PLFP| Fee payment|Year of fee payment: 6 |
    2020-11-20| PLFP| Fee payment|Year of fee payment: 7 |
    2021-11-18| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1463441|2014-12-30|
    FR1463441A|FR3031151B1|2014-12-30|2014-12-30|DRUM BRAKE ADJUSTING DEVICE, CONTROL METHOD, AND METHOD FOR INDUSTRIALIZING SUCH BRAKE|FR1463441A| FR3031151B1|2014-12-30|2014-12-30|DRUM BRAKE ADJUSTING DEVICE, CONTROL METHOD, AND METHOD FOR INDUSTRIALIZING SUCH BRAKE|
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