• 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:
    Transmission device for controlling the translational movement of a member (1) comprising a fixed housing (110) housing an outer sun gear (120) internally provided with a toothing (122), an inner sun gear (140) connected to the controlled member (1) and carrying a rack (141) in the translation direction (xx). A planet carrier (130) with inclined toothed satellites (131) engaged with the internal toothing (122) and the rack (141) controls the translational movement of the inner sun gear (140). The transmission device is driven by a motor (2) with a transmission (3) acting either on the outer sun gear (120) or the planet carrier (s) (130).
    公开号:FR3017174A1
    申请号:FR1550621
    申请日:2015-01-27
    公开日:2015-08-07
    发明作者:Francois Gaffe
    申请人:Robert Bosch GmbH；
    IPC主号:
    专利说明:

    [0001] Field of the Invention The present invention relates to a transmission device for controlling the translational movement of a member and brake system equipped with such a transmission device forming a brake booster. STATE OF THE ART There are multiple actuating devices or actuators and in particular in the field of braking systems. These actuators, also called brake boosters, amplify the force exerted on the primary piston of the master cylinder as a function of the actuation on the brake pedal. These boosters are either vacuum or electric or hydraulic assistance. These air brakes are not suitable for vehicles with electric or hybrid drive. Electric brake boosters are bulky. OBJECT OF THE INVENTION The object of the present invention is to develop generally a transmission device making it possible to transform a rotational movement into a translational movement of a controlled object and in particular of an applicable transmission device such as brake booster to a braking system. DESCRIPTION AND ADVANTAGES OF THE INVENTION For this purpose, the subject of the present invention is a transmission device for controlling the translational movement of an element comprising: a stationary housing housing: an outer sun gear in the form of a sleeve provided internally with a helical internal toothing, * an inner sun gear fixed in rotation and free in translation, connected to the member and carrying a rack in the translation direction (xx) of the member, * a carrier (s), * the an outer sun gear or the planet carrier (s) being rotated while the planet carrier (s) or the outer sun gear is stationary relative to the housing, characterized in that the planet carrier is provided with at least one satellite with slanted teeth, engaged with the helical internal toothing and with the rack. This transmission device has the advantage of being of a particularly small size, of being composed of a very small number of components and of effectively transforming a rotational movement into a translational movement, either of thrust or traction or opposing the reaction exerted by a spring on the controlled member.
    [0002] According to another advantageous characteristic, the satellite has a curved barrel shape and the rack has a curved toothing. The convex shape of the planet or satellites and of the rack or racks allows linear contact at the point of tangency of the teeth, which improves the efficiency of the transmission and makes it possible to transmit much greater forces than straight contact gears. punctual so that one can, according to the conditions of use, realize the transmission with satellites in plastic material, which facilitates the manufacture and reduces considerably the cost. According to another advantageous characteristic the satellite carrier is provided with groups of three satellites regularly distributed at the periphery and the inner sun gear is provided with at least three racks oriented along the translation axis (xx) to cooperate with the satellites. The multiplication of the groups of satellites and in particular of three satellites per group makes it possible to reduce the stresses exerted on each satellite and thus to simplify the manufacture by the use of plastic materials for the realization of the satellites and if necessary of the carrier. satellite. In the simplest case, the satellite carrier (s) has only one satellite or twin satellite. But in general for reasons of symmetry, it is advantageous to have a carrier (s) provided with at least three satellites or three pairs of satellites cooperating with a rack in one or more parts made on the inner sun gear.
    [0003] According to another advantageous characteristic, the porteatellite (s) is provided with twin satellites. According to another feature, the ring gear of the outer planet is provided with a drive gear, which makes it possible to have a pinion of large diameter which is attacked by the output of the motor driving the transmission device and constituting that makes a reducer directly at the level of the transmission device. According to another characteristic, the inner sun gear comprises at least one rack on a flat longitudinal strip.
    [0004] The section of the inner sun wheel, preferably of tubular shape, is externally a polygonal section, some segments of which correspond to a flattened longitudinal strip in which a rack is formed. The number of longitudinal bands flattened with a rack corresponds advantageously to the number of satellites of the satellite carrier (s). However, the rack can also be made on the entire peripheral surface of the inner sun gear and in this case, this peripheral surface is cylindrical with a circular section, so that the satellites can turn around the inner sun gear, the movement input being then by the carrier (s), the outer planet remaining in these fixed conditions. The invention also relates to a braking system comprising a master cylinder and a booster, the brake booster is a transmission device for controlling the translational movement of an element comprising: - a fixed housing housing: * a sun gear outer sleeve-shaped internally provided with a helical internal toothing, * an inner sun gear fixed in rotation and free in translation, connected to the member and carrying a rack in the direction of translation (xx) of the member, * a carrier (s) provided with at least one inclined toothed satellite, engaged with the helical internal toothing and with the rack, * the outer sun gear or the carrier (s) being rotated while the carrier (s) or the outer sun gear is fixed relative to the housing, a control rod connected to the brake pedal and a piston acting on a reaction disc in parallel with a piston in - Intermediate subjected to the thrust of the inner sun gear, and transmitting the thrust movement to the primary piston of the master cylinder, a motor being engaged by a transmission with the outer teeth of the ring gear of the outer sun gear. This braking system has the advantage of being compact at the brake booster combined with the master cylinder. Drawings The present invention will be described in more detail below with the aid of examples of the transmission device shown in the accompanying drawings, in which: FIG. 1 is a cutaway isometric view of a first embodiment. 2 is a simplified isometric view of the transmission device of FIG. 1, FIG. 3 is a cut isometric view of another embodiment of a transmission device, FIG. is a simplified isometric view of the transmission device of FIG. 3, FIG. 5 is a simplified cross-sectional view perpendicular to the axis (xx) of a variant transmission device, FIG. 6 is a front view of FIG. FIG. 7 is a side view of a satellite of the transmitting device according to FIG. 5, FIG. 8 is an isometric view in section of a servo. kidney equipped with a transmission device according to the invention. DESCRIPTION OF EMBODIMENTS OF THE INVENTION According to FIG. 1, the subject of the invention is a transmission device 100 intended to control the translational movement of a member 1 in the direction (xx) in a direction (D). or in the opposite direction (R). The device 100 consists of a fixed housing 110 which houses the transmission mechanism formed of an outer sun gear 120, an inner sun gear 140 and a planet carrier (s) 130. The outer sun gear 120 is in the form of sleeve 121 provided with an outer ring 123. The sun gear 120 is fixed in translation (direction xx) and free in rotation. It has a helical internal toothing 122. The inner sun gear 140 fixed in rotation, is free in translation (direction xx). This inner sun gear 140 in the form of a tube is connected to the controlled member (1); it carries a rack 141 in the direction of translation (xx) of the controlled member 1. The carrier (s) 130 is provided with at least one satellite 131 inclined gear. This satellite 131 interposed between the outer sun gear 120 and the inner sun gear 140 is engaged with the helical internal toothing 122 and with the rack 141. The external sun gear 120 [or the planet carrier (s) 130] is driven into position. while the other element, namely the satellite array (s) 130 [or the outer sun gear 120] is stationary relative to the housing 110. This rotational movement generates the translational movement of the inner sun gear 140 which pushes or pulls the controlled member 1 as a function of the direction of rotation, applied to the outer sun gear 120 or to the carrier (s) 130. The outer sun gear 120 or the carrier (s) 130 is rotated by a motor 2. In the case where the outer sun gear 120 is rotated, the ring gear 123 is toothed, engaged with the output of the motor 2, either directly or via a transmission (3), for example a gearbox. In this case, the carrier (s) 130 is locked in rotation so that the satellite (s) 131 moves (s) by meshing with the rack 141 of the inner sun gear 140 along a line parallel to the direction of translation. (xx). The rack 141 may be constituted by a band occupying a fraction of the periphery of the inner sun gear 140. The inner sun gear 140 comprises as many such rack-shaped strips 141 as there are satellites 131 on the planet carrier (s) 130. In the case where the outer sun gear 120 is fixed and the planet carrier (s) 130 is rotated, the latter (130) comprises a ring gear 123 whose gearing (not shown) driven by the motor 2. this embodiment, the rack 141 of the inner sun gear 140 occupies the entire periphery of the inner sun gear 140. FIG. 2 is a simplified isometric view of the transmission device 100 of FIG. 1 showing the outer sun gear 120 in the form of a sleeve 121 with at its end, the crown 123 which can be toothed. This toothing is not shown. The figure shows the helical internal toothing 122 of the sleeve 121 of the outer sun gear 120. The inner sun gear 140 is provided with a right rack 141 oriented in the translation direction (xx). In this embodiment, the carrier (s) 130 is fixed in rotation and the outer sun gear 120 is rotated. The inner sun gear 140 has only one rack 141 extending on a longitudinal strip of its outer surface flattened for this purpose. The carrier (s) 130 is not shown. Only appears a satellite 131 with inclined teeth whose inclination corresponds to the relative inclination of the helical gear 122 of the outer sun gear 120 and the right toothing of the rack 141 of the inner sun gear 140. The teeth of the epicyclic mechanism formed by the outer sun gear 120, the planet carrier (s) 130 with its satellite (s) 131 and the inner sun gear 140 with its rack 141 is a self-locking mechanism so that only the relative rotation of the outer sun gear 120 or the planet carrier (s) 130 relative to the inner sun wheel 140 (the other of the two elements being fixed) generates a translation movement of the inner sun gear 140 in a direction (D) or in the other (R) in the direction (xx). In the transmission device 100 according to the invention, as described above, as well as in the other embodiments described below, the inclined toothing of the satellite 130 (or satellites) is a helical axis toothing. (yy) which is that of the satellite.
    [0005] This axis is inclined relative to the axis (xx) of the rack 141 so that contact each tooth of the satellite 131 in engagement and the tooth of the rack 141 are tangent. In the case of a rack with straight teeth oriented perpendicular to the direction (xx) or axis of the rack 141 as is the case in general, and a satellite whose teeth have a slope (a) relative to the the axis (yy) of the satellite 131, this axis of the satellite will be inclined relative to the axis (xx) of the rack 141 of the complement of angle (90 ° -a) with respect to the axis (xx).
    [0006] Figures 3 and 4 show a second embodiment of the transmission device 200 according to the invention. For the description of this embodiment, use will be made of the same references as those of the first embodiment, however increased by 100. This device 200 differs from the previous one in that the satellite carrier (s) 230 is provided with twin satellites 23 1 a, b. In addition, three pairs of satellites 23 1 a, b distributed in an equiangular manner are provided by way of example. The satellites 23 1 a, b mesh with the rack 241 of the inner sun gear 240 and with the helical internal toothing 222 of the external sun gear 220.
    [0007] The rack 241 is in fact in this case constituted by three racks in the form of flattened strips aligned in the direction of displacement (D) of the inner sun gear 240. This embodiment is not necessary. The rack 241 may also extend over the entire periphery of the inner sun gear.
    [0008] This embodiment 200 allows as the previous, the drive by the outer sun gear 220, the carrier (s) 230 being fixed. In this case, the outer sun gear 220 is provided with a ring gear 223 engaged with the output of the motor 2 by a direct connection or via a transmission 3, in particular a gearbox. According to another embodiment and operation, this transmission device comprises an external fixed sun gear 220 and a satellite carrier (s) 230 mobile in rotation and fixed in translation. The rack 241 of the inner sun gear 240 extends over the entire periphery thereof.
    [0009] FIG. 4, which is a simplified isometric view, shows in a similar manner to FIG. 2, the outer sun gear 220 with its helical internal toothing 222 and its drive ring 223. The toothing of the drive ring 223 is not represented.
    [0010] This figure shows the three pairs of satellites 231a, b without the carrier (s). These pairs of satellites are distributed equiangularly and the satellites 23a, b are oriented in the same direction. In the various embodiments shown in FIGS. 2, 4 and 5, the inner sun wheel 140, 240 is shown with strip-like racks occupying flattened strips of the inner sun gear 140, 240 which thus has a polygonal outer section, its inner section being circular as shown in the figures.
    [0011] Figures 5 to 7 show a variant of the transmission device 300 according to the invention. The sectional view of FIG. 5 shows the device 300 with axis (xx) perpendicular to the plane of the figure; it consists of an outer sun gear 320 similar to the previous, formed of a sleeve 321 with internal teeth 322 and an inner sun gear 340 provided with one or more racks 341 a, b, c. The planes 320, 340 receive a planet carrier 330 provided with satellites 332 engaged with both the toothing 321 of the outer sun gear 320 and the rack 341 of the inner sun gear 340. The inner sun gear 340 has a generally hexagonal section with three racks 341a, b, c in the form of longitudinal strips of axis (xx) and regularly distributed peripherally at an angle of 120 ° leaving between them strips 342a, b, c which can also be racks . The teeth of the racks 341 a, b, c are oriented transversely and have a curved shape (globular shape) as pointed out by the circular arc extending on the drawing the bottom of each tooth in Figure 6. The satellites 331 which cooperate with these racks 341 a, b, c have a convex, barrel-shaped shape homologous to that of the teeth of the racks 341 a, b, c so as to increase the contact and replace the quasi-point contact of a strictly helical toothing of the satellite by a linear contact thanks to this convex shape. Figure 7 shows a satellite 331 in side view. It comprises an axis 332 of geometric axis (yy) and a pinion provided with teeth 333, helical curved. These teeth have a slope (a) so that the satellite 331 is installed in the planet carrier 330 with an orientation relative to the axis (xx) of the rack 341 (341 a, b, c) corresponding to the complement of the angle of inclination (a) to have a tangential contact between each tooth 333 of the planet carrier 331 and the teeth of the crest 341 a, b, c. This inclination of the axes (yy) of the satellites 331 relative to the direction (xx) of the racks 341 a, b, c appears in FIG. 6 but is not visible in the sectional view of FIG. previously, the number of satellites can be increased, for example having two groups of three satellites in the transverse plane as in figure 6 to reduce the effort applied to each satellite and make it possible to make them out of plastic to reduce the costs . The satellite groups can also be coupled in series to increase the axial force exerted.
    [0012] Figure 8 shows an application of the transmission device described above in its different versions. The transmission device 200 shown by way of example, but not rewritten in detail, is combined with a braking system of which only the tandem master cylinder 4 is shown. The transmission device according to the invention then constitutes an electromechanical servo-brake driven by the engine 2, the output of which drives a gearbox formed by the pinions 31 and a small pinion 32, the toothing 224 of the ring gear 223 of the external sun gear 220 This mechanism receives by the inner sun gear 240, the control rod 160 coming from the brake pedal and the transmission and thrust detection member on the brake pedal and the control rod 160. The connection continues with a plunger 161 for the detection of the movement of the control rod 160 and thus the detection of the braking demand of the driver for actuating the brake booster, that is to say the motor 2 and the transmission device 200. plunger 161 acts on the reaction disc 162 which itself solicits the push rod 163. The latter pushes the primary piston 41 of the tandem master cylinder 4. The push rod 163 is moved in the s ens of the compression of the master cylinder 4 by an intermediate piston 164 connected to the outer sun gear 220. The intermediate piston 164 is traversed by the plunger 161 which can thus directly push the reaction device 162 to actuate the master cylinder 4 in case brake booster failure (200, 2).
    [0013] A return spring 165 pushes the intermediate piston 165 against the ring gear 223 of the external sun gear 220.15 NOMENCLATURE 1 2 3 4 31, 32 100 110 120 121 122 123 130 131 140 141 160 200, 300 210, 310 220, 320 221, 321 222 , 322 223, 323 224, 324 230, 330 231a, b, 331 332 333 240, 340 241, 341 xx YY Actuator Engine Heat Transmission Master Cylinder Sprockets Drive Gear Fixed Housing Outer Gear Sleeve Inner Tooth Crown Carrier ( s) Satellite Inner planet Rack Control rod Transmission Gearbox Fixed housing Outer gear Sleeve Internal toothing Crown Toothing of the crown 223 Satellite carrier (s) a, b, c Satellite / satellite pairs Satellite shaft Tooth of the planet Inner planet Gear rack Axis of rack and pinion Genetic axis of the satellite35
    权利要求:
    Claims (7)
    [0001]
    CLAIMS 1 °) Transmission device for controlling the translational movement of a member (1) comprising: a fixed housing (110) housing: * an outer ring gear (120, 220, 320) in the form of a sleeve (121, 221 , 321) internally provided with a helical internal toothing (122, 222, 322), * an inner sun gear (140, 240, 340) fixed in rotation and free in translation, connected to the member (1) and carrying a - maille (141, 241, 341) in the translation direction (xx) of the member (1), * a carrier (s) (130, 230, 330), * the outer sun gear (120, 220, 320) or the carrier (s) (130, 230, 330) being rotated while the planet carrier (s) (130, 230, 330) or the outer sun gear (120, 220, 320) is stationary. relative to the housing (110), characterized in that the satellite carrier (s) (130, 230, 330) is provided with at least one satellite (131, 231, 331) with an inclined gear, in engagement with the toothing internal helico dale (122, 222, 322) and the rack (141, 241, 341).
    [0002]
    2) A transmission device according to claim 1, characterized in that the satellite (331) has a barrel-shaped barrel and the rack (341) has a curved toothing.
    [0003]
    Transmission device according to Claim 1, characterized in that the planet carrier (230, 330) is provided with groups of three satellites regularly distributed at the periphery and the inner sun gear (240, 340) is provided with at least three racks (241, 341) oriented along the translation axis (xx) to cooperate with the satellites (231, 331).
    [0004]
    4) A transmission device according to claim 1, characterized in thatthe carrier (s) (230) is provided with twin satellites (231a, b).
    [0005]
    5 °) transmission device according to claim 1, characterized in that the ring (123) of the outer sun gear (120) is provided with a drive toothing (124).
    [0006]
    6 °) transmission device according to claim 1, characterized in that the inner sun gear (140) comprises at least one rack (141) on a longitudinal strip flattened.
    [0007]
    7 °) braking system comprising a master cylinder and a booster, characterized in that the booster is a transmission device (100, 200) according to any one of claims 1 to 6, for controlling the translation movement of a member (1) comprising: a fixed housing (110, 210) housing: * an outer ring gear (120, 220) in the form of a sleeve (121, 221) internally provided with a helical internal toothing (122, 222), * an inner sun gear (140, 240) fixed in rotation and free in translation, connected to the member (1) and carrying a rack (141, 241) in the translation direction (xx) of the member (1), * a carrier (s) (130, 230) provided with at least one inclined toothed satellite (131, 231) engaged with the internal helical toothing (122, 222) and with the rack (141, 241). ), the outer sun gear (120, 220) or the planet carrier (130, 230) being rotated while the planet carrier (130, 230) or the outer sun gear (120, 220) is fixed relative to the housing (110, 210), a control rod (160) connected to the brake pedal and a piston (161) acting on a reaction disk (162). ) in parallel with an intermediate piston (164) subjected to the thrust of the inner sun gear (140, 240), and transmitting the thrust movement to the primary piston (41) of the master cylinder (4), a motor (2) being engaged by a transmission (3, 31, 32) with the external toothing (224) of the ring gear (223) of the outer sun gear (230).
    类似技术:
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    同族专利:
    公开号 | 公开日
    US20150219191A1|2015-08-06|
    JP6576642B2|2019-09-18|
    FR3017173A1|2015-08-07|
    US9726265B2|2017-08-08|
    FR3017174B1|2016-09-30|
    JP2015145726A|2015-08-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE19600518C1|1996-01-09|1997-06-19|Centra Feinwerktechnik Gmbh|Lifting gear for transforming rotational to reciprocating motion|
    DE202010017605U1|2010-02-15|2012-10-08|Robert Bosch Gmbh|Brake booster and method and apparatus for its operation|
    US4964314A|1989-03-13|1990-10-23|Wilkes Donald F|Device for converting rotary motion to linear motion|
    DE19611910A1|1996-03-26|1997-10-02|Bosch Gmbh Robert|Electromechanical braking device|
    DE102007018469A1|2007-04-19|2008-10-23|Robert Bosch Gmbh|Electromechanical brake booster|
    DE102009001142A1|2009-02-25|2010-08-26|Robert Bosch Gmbh|Electromechanical brake booster|
    DE102009028034A1|2009-07-27|2011-02-03|Robert Bosch Gmbh|Hydraulic master cylinder|
    JP2011093472A|2009-10-30|2011-05-12|Hitachi Automotive Systems Ltd|Electric booster|
    FR2990913B1|2012-05-23|2014-07-04|Bosch Gmbh Robert|VEHICLE BRAKE SYSTEM WITH ELECTRICAL SERVOMOTOR AND HYDRAULIC REACTION PISTON|EP3350046B1|2015-09-17|2019-10-23|Lucas Automotive GmbH|Electromechanical brake force booster|
    DE102016222859A1|2016-11-21|2018-05-24|Audi Ag|Brake system for a motor vehicle|
    CN107284431B|2017-07-05|2020-07-07|重庆大学|Active three-safety-redundancy high-thrust electronic power-assisted brake actuator|
    WO2019065318A1|2017-09-27|2019-04-04|日立オートモティブシステムズ株式会社|Electric booster|
    CN107618487B|2017-09-29|2019-02-12|东莞市松研智达工业设计有限公司|A kind of braking mechanism based on flight|
    法律状态:
    2015-11-06| PLSC| Search report ready|Effective date: 20151106 |
    2016-01-21| PLFP| Fee payment|Year of fee payment: 2 |
    2017-01-24| PLFP| Fee payment|Year of fee payment: 3 |
    2018-01-24| PLFP| Fee payment|Year of fee payment: 4 |
    2020-01-23| PLFP| Fee payment|Year of fee payment: 6 |
    2021-01-21| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1450768A|FR3017173A1|2014-01-31|2014-01-31|TRANSMISSION DEVICE FOR CONTROLLING THE ORGANIZATION TRANSLATION MOTION AND BRAKE SYSTEM EQUIPPED WITH SUCH A TRANSMISSION DEVICE FORMING A SERVOFREIN|
    FR1550621A|FR3017174B1|2014-01-31|2015-01-27|TRANSMISSION DEVICE FOR CONTROLLING THE ORGANIZATION TRANSLATION MOTION AND BRAKE SYSTEM EQUIPPED WITH SUCH A TRANSMISSION DEVICE FORMING A SERVOFREIN|FR1550621A| FR3017174B1|2014-01-31|2015-01-27|TRANSMISSION DEVICE FOR CONTROLLING THE ORGANIZATION TRANSLATION MOTION AND BRAKE SYSTEM EQUIPPED WITH SUCH A TRANSMISSION DEVICE FORMING A SERVOFREIN|
    US14/609,393| US9726265B2|2014-01-31|2015-01-29|Transmission device for controlling the translational movement of an organ and brake system equipped with such a transmission device forming a brake booster|
    JP2015017704A| JP6576642B2|2014-01-31|2015-01-30|Transmission device for controlling the translational motion of a member and brake system comprising such a transmission device to form a brake booster|
    DE102015201695.1A| DE102015201695A1|2014-01-31|2015-01-30|Transmission device for controlling the displacement movement of an organ and brake system, which is equipped with such a transmission device which forms a brake booster|
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