• 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:
    Master cylinder (100) having a housing (101) having a bore (102) housing a primary piston (110). The housing equipped with a brake light control (160) has on the one hand a bore (104) with an axis parallel to that of the bore receiving the piston (110) and receiving a magnet (147) whose movement is coupled to that of the piston (110) and on the other hand, a Hall sensor (160) detecting the movement of the magnet to control the brake lights (161, 162). The brake light control comprises a movable element (140) that is integral in translation with the primary piston (110) at the end thereof and has a fastener removably attached to the end of the piston (110) coming out of the housing. (101) and a rod (141) of axis parallel to the axis (X1X1) of the bore (104), connected to a tab (142) of the fastener and whose end engaged in the bore (104) carries a magnet (147) for cooperating with the Hall sensor (160).
    公开号:FR3037547A1
    申请号:FR1555715
    申请日:2015-06-22
    公开日:2016-12-23
    发明作者:Masaki Shiwa
    申请人:Robert Bosch GmbH；
    IPC主号:
    专利说明:

    [0001] FIELD OF THE INVENTION The present invention relates to a master cylinder comprising a housing provided with a bore housing a primary piston protruding from the bore, the housing, equipped with a brake light control comprising a drilling of axis parallel to that of the bore receiving the piston and the bore receiving a magnet whose movement is coupled to that of the piston and a Hall sensor outside the housing, detecting the movement of the magnet to control the brake lights. STATE OF THE ART There is a tandem master cylinder equipped with a brake light switch consisting of a magnet slidably mounted in a bore of the master cylinder housing and whose axis is parallel to the bore of the master. -cylinder in which slides the primary piston and the secondary piston. The magnet is pushed by a compression spring housed at the bottom of the bore and acting in the opposite direction to that of the actuation of the master cylinder for braking. The magnet housed in a support attached to the end of a rod out of the bore and meets a stop secured to the end of the primary piston projecting from the bore of the master cylinder. The rod is guided in a sliding bearing sleeve attached to the end of the bore. A Hall sensor outside the master cylinder housing detects the position of the magnet at rest and controls the triggering of the stop lights when the rod, pushed by the stop of the activated piston, leaves its rest position by compressing the spring. This spring pushes the magnet into the rest position when disappears the thrust exerted by the primary piston of the master cylinder on the rod. This master cylinder has the disadvantage of being relatively complicated both by its structure and by its operation. It is sen- Bible to the fouling of the hole in which slides the magnet. In case of seizure of the magnet the situation will be interpreted as an output of the brake so that the brake lights remain fully lit permanently and no longer allow to signal a braking action to the driver follower.
    [0002] 3037547 2 This master cylinder also has the disadvantage of being of a structure not only fragile for the brake light switch but also to have a complex structure because of this switch and to be slow to display the stopping the activation of the stop lights. OBJECT OF THE INVENTION The object of the present invention is to develop a master cylinder equipped with a brake light switch for braking which is of simple construction and allows efficient and safe switching both for firing stop only for their extinction as soon as the braking system returns to rest. DESCRIPTION AND ADVANTAGES OF THE INVENTION To this end, the subject of the present invention is a master cylinder of the type defined above, characterized in that the control of brake lights comprises a mobile unit integral in translation from the primary piston to the engine. end thereof and having a fastener removably attached to the end of the primary piston exiting the master cylinder housing and a rod axis parallel to the axis of the bore, connected to a tab of the fastener and whose end engaged in the bore carries a magnet to cooperate with the Hall sensor. The master cylinder according to the invention has the advantage of being a particularly simple embodiment by assembling a small number of components, ensuring the reliability of the detection of the actuation of the brakes and reducing the time of response to both activation and shutdown. In the event of a fault it is easily replaceable since it is simply clipped into the primary piston so that the whole crew with the magnet can easily be removed from the master cylinder to be replaced without having to make any particular adjustment.
    [0003] According to another feature, the fastener is attached to the rear end of the primary piston exiting the master cylinder housing by a freely rotatable connection about the axis of the piston and the bore.
    [0004] 3037547 3 This free connection in rotation about the axis of the piston simplifies the achievement of the attachment of its attachment and the guide of the rod carrying the magnet in the bore. According to another feature, the fastener is formed of a ring provided with tabs terminated by outer hooks forming a ring of retaining hooks and the inner rear end of the skirt of the primary piston comprises an inner groove of complementary section of that of the hooks carried by the tongues to exert at least one tensile force on the rod by the active movement of the piston in the direction of braking. According to another feature, the hooks have a trapezoidal section with a right rear side, a front stop surface and a ramp directed towards the front and towards the axis and the groove of the rear end of the sleeve forming the skirt of the primary piston. a section homologous to that of the hooks with a rear abutment surface, a front abutment surface and a ramp oriented towards the axis as well as a groove bottom. The trapezoidal shape of the section of the hooks and the groove has the advantage of making a connection with very little play both in the direction of traction and in the direction of the thrust thus allowing precise control of the brake lights. According to another feature, the tab to which is attached the head of the rod aligned with the axis of the bore and which is also parallel to the axis of the bore, this side tab being secured to the ring. According to another characteristic, the components of the mobile equipment are made of plastic. Thus, in summary, the master cylinder equipped with a brake light switch according to the invention is a particularly simple and reliable and compact. Drawings The present invention will be described in more detail below with reference to an embodiment of a tandem master cylinder shown in the accompanying drawings in which: FIG. 1 is a section of a master tandem cylinder at the primary piston and part of the secondary piston, Figure 2 is an axial sectional view of the rear end of the primary piston and the attachment of the movable member. FIG. 3 is a sectional view showing the shapes and dimensional relationships of the section of FIG. 2. DESCRIPTION OF AN EMBODIMENT OF THE INVENTION By convention, reference will be made to the front AV and FIG. the rear rear of the master cylinder, the rear AR corresponding to the position 10 of the primary piston and the actuator which controls it according to the usual not shown, the elements of a master cylinder. The description below applies to a tandem master cylinder, and under the same conditions to a single master cylinder. FIG. 1 is a partial sectional view of a tandem master cylinder 100 showing in its housing 101 the bore 102 receiving the primary piston 110 and the secondary piston 120 with their cups 131-134. The primary piston 110 pushes on the secondary piston 120. The primary piston 110 delimits the primary chamber 111 relative to the secondary piston 120. The secondary piston 120 delimits the secondary chamber 121 at the end of the bore 102. The secondary piston 120 rests against the bottom of the secondary chamber 121 via a secondary spring 122 and the primary piston 110 bears against the secondary piston 120 by a primary spring 112.
    [0005] A retaining rod 125 which only partially appears, restricts the displacement of the secondary piston 120 against the thrust of the secondary spring 122 and a retaining rod 115 limits the extension movement of the primary piston 110 relative to the secondary piston 120 to the precise return of the pistons in the rest position with respect to the brake fluid supply ports. The portion of the primary piston 110 projecting from the bore 102 of the housing 101 is integral in translation with a movable element 140 formed of a rod connected by its rear end 14b to the tab 142 of a ring 143 integral with the rear end of the primary piston 110.
    [0006] The front end 141a of the rod 141 carries a magnet 147. The housing 101 has a bore 104 of axis X1X1 parallel to the axis XX of the bore 102 of the master cylinder 100 and receives the end of the rod. 141 with the magnet 147.
    [0007] A Hall sensor 160 is attached to the housing 101 facing the rest position of the front end 141b of the rod 101 with its magnet 147 to detect the movement of the rod associated with the primary piston 110 to detect a braking action. The Hall sensor 160 is connected to a circuit 161 which controls the stop lights 162.
    [0008] The primary piston 110 consists of a cylindrical sleeve 116 subdivided by a partition 117 into a front portion 110b and a rear portion 110a, open. Rear side, the partition 117 has a centering cavity 118 for the pusher head actuated by the brake amplifier.
    [0009] The rear end 112a of the return spring 112 surrounding a guide sleeve 135 rests against the partition wall 127. The guide sleeve 135 has a bottom through which the rod 115 retained by its enlarged head 115b; its front end 115a is fixed in a washer 118 serving as a support for the spring 112 and against which also the partition 127 of the secondary piston 120 rests. The secondary piston 120 is a cylindrical sleeve 126 subdivided by its partition 127 leaving the front portion 120b and the rear portion 120a open each housing one end of a return spring (primary spring 112 secondary spring 122).
    [0010] The primary piston 110 and the secondary piston 120 each have a ring of bores 119, 129 for supplying brake fluid from the brake fluid reservoir and by distributing grooves 105, 106 of the master cylinder housing. . The grooves 105, 106 are isolated by the sealing cups 131-134 resting on the sleeve 116 of the primary piston 11 and that 126 of the secondary piston 120 for feeding the chambers 111, 121 in the rest position. of the tandem master cylinder and then isolate the two chambers 111, 121 as soon as the primary piston 110 begins to be pushed. The moving assembly 140 generally presented above consists of a ring 143 carrying tabs 144 terminated by external hooks 145 engaged in the open rear end of the primary piston 110. Its cylindrical sleeve 116 is provided internally with a groove 150 of trapezoidal section, truncated forming a hooking edge.
    [0011] The ring 143 carries the tab 142 to which is fixed the rear end 141b of the rod 141 whose front end 141a has a guide piece 146 holding the magnet 147 in the form of a sleeve. The rod 141 engaged in the bore 104 is guided by the piece 146. The rod 141 has a length such that at rest (absence of actuation of the brake) the magnet 147 is in front of the sensor 160 which thus detects its position rest through the housing. As soon as the magnet 147, moved by the piston 110 leaves its position facing the sensor 160, the operating circuit detects this movement as a start of braking triggering the brake lights.
    [0012] The link secured in translation in both directions between the ring 143 and the primary piston 110 is a snap fastener for transmitting the translational movement of the piston. This connection is free in rotation so that the rod 141 remains aligned on the axis X1X1 of the bore 104. Thus, the primary piston 110 can exert no torque on the rod 141 which remains on its axis X1X1. The hooking / clipping of the ring 143 by its hooks 145 in the groove 150 is achieved by the trapezoidal section hooks 145 resting by their right side against the right edge 151 of the groove, this straight edge oriented perpendicular to the XX axis. Thus, the primary piston 110 precisely pulls the rod 141 and its magnet 147 when the brake is actuated. FIG. 2 shows more precisely the embodiment of the moving element 140 associated with the piston (primary) 110, the drawing being limited to the half-section of the ring 143 and the rear end 116b of the sleeve 116 of the piston 110. The hook section 145 is in the form of a rectangular trapezium and the groove 150 of the sleeve 16 also has a corresponding rectangular trapezoidal section. The tabs 144 of the ring 143 are terminated by hooks 145 having a rear side 145a, straight, perpendicular to the axis XX and in front, an abutment surface 145b extending through the trapezoidal ramp 145c. with a small side 145d. The throat 150 of homologous trapezoidal section has a right rear side 150a perpendicular to the axis XX and a stop surface 5 before 150b. The rear surface 150a forms an abutment joining the inner contour 116a of the sleeve 116 by a short ramp 150a preceding the abutment surface 151 to promote the clipping of the hooks 145 in the groove 150. The front abutment surface 150b continues with a ramp 150c and a 150d throat bottom.
    [0013] The inlet 116b of the sleeve 116 has a ramp shape at the rear to facilitate engagement of the hook crown 145 in the sleeve 116. FIG. 3 shows the dimensional relationships between the characteristic radii of the ring 143: The outer radius R1 of the tongues ring 144, the outer radius R2 of the rear abutment surface 145a of the hooks 145, the outer radius R3 of the forward abutment surface 145b and those of the rear of the sleeve 116: 20 the radius R10 of the inner surface 116a of the sleeve 116, the radius R 1 of the bottom of the groove 150 and the rear abutment surface 150a, the outer radius R 12 of the abutment surface 150b. Thus: the radius R 1 of the tongue ring 144 is slightly smaller than the radius R 0, the radius R 2 of the abutment rear surface 145 a is slightly smaller than the radius R 1, the radius R 3 is greater than the radius R 0 but less than the radius R12. The moving element 140 formed of the rod 141, the tab 142 and the ring 143 with its tabs 144 and the hooks 145 is an assembly preferably made of injected plastic material.
    [0014] 3037547 8 NOMENCLATURE 100 Master cylinder 101 Housing 102 Bore 5 104 Drilling 105-106 Distribution groove 110 Primary piston 110a Front 110b Rear 10 111 Primary chamber 112 Primary spring 112a Front section of the primary spring 112b Rear section of the primary spring 115 retainer 15 116 Cylindrical sleeve 116a Inner sleeve tape 116b Ramp-shaped sleeve inlet 117 Cylinder sleeve partition 118 Support washer 20 119 Hole crown 120 Secondary piston 120a Front section 120b Back section 121 Secondary chamber 25 122 Secondary spring 122a Rear portion of secondary spring 125 Retaining pin 126 Cylindrical sleeve 127 Partition 30 129 Hole crown 131-134 Cups 135 Guide sleeve 140 Crew 141 Ramp 35 141a Front end
    权利要求:
    Claims (3)
    [0001]
    CLAIMS 1 °) Master cylinder comprising a housing (101) provided with a bore (102) housing a primary piston (110) protruding from the bore, the housing (101) equipped with a control (161) brake lights (162) having a bore (104) of axis (X1X1) parallel to that (XX) of the bore (102) receiving the piston (110) and, the bore (104) receiving a magnet (147) whose movement is coupled to that of the piston (110) and a Hall sensor (160) external to the housing, detecting the displacement of the magnet (147) for controlling the brake lights (162), the master cylinder characterized in that the control of brake lights includes a movable member (140) movably integral with the primary piston (144, 145) connected to the end thereof and having a fastener (142, 145) removably attached to the end (110b) of the primary piston (110) coming out of the housing (101) of the master cylinder and a rod (141) of axis parallel to the axis (X1X1) of the bore (104), connected a tab (142) of the fastener and whose end (141a) engaged in the bore (104) carries a magnet (147) to cooperate with the Hall sensor (160).
    [0002]
    2) master cylinder according to claim 1, characterized in that the fastener (142, 143, 144, 145) is attached to the rear end (110b) of the primary piston (110) exiting the housing (102) of the master cylinder by a freely rotatable connection about the axis XX of the piston (110) and the bore (102).
    [0003]
    3) master cylinder according to claim 1, characterized in that the fastener (142, 143, 144, 145) is formed of a ring (143) connected to the tab 142 and provided with tabs (144) terminated by outer hooks of trapezoidal section (145) forming a ring of retaining hooks and the inner rear end (116a) of the skirt (116) of the primary piston (110) has an inner groove (150) of trapezoidal cross-section 3037547 11 of the hooks (145) carried by the tabs (144) to exert a tensile force on the rod (141) by the active movement of the piston (110) in the direction of braking. 4 °) master cylinder according to claim 3, characterized in that the hooks (145) have a trapezoidal section with a right rear side (145a), a front stop surface (145b) and a ramp (145c) directed towards forward, towards the axis (XX) and the groove (150) of the rear end (116b) of the sleeve (116) of the primary piston (110) has a section homologous to that of the hooks (145) with a a rear stop surface (150a), a forward stop surface (150b) and a ramp (150c) facing forward, to the axis (XX) and a groove base (150d). The master cylinder according to claim 3, characterized in that the ring (143) has a side tab (142) to which is attached the head (14b) of the axially aligned rod (141). X1X1. 6. Master cylinder according to claim 1, characterized in that the moving element (140) is made of plastic components (141, 142, 143, 144, 145). 25
    类似技术:
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    同族专利:
    公开号 | 公开日
    DE102016206496A1|2016-12-22|
    FR3037547B1|2019-07-05|
    US20160368415A1|2016-12-22|
    CN106257061A|2016-12-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2651838A1|1989-09-13|1991-03-15|Automotive Prod France|Piston assembly intended to be used with a hydraulic cylinder|
    FR2788095A1|1998-12-30|2000-07-07|Valeo|CLUTCH TRANSMITTER HYDRAULIC CYLINDER COMPRISING IMPROVED MEANS FOR AXIAL RETENTION OF THE PISTON ROD|
    FR2885108A1|2005-04-28|2006-11-03|Bosch Gmbh Robert|Master cylinder device for motor vehicle, has ferromagnetic ring placed at push rod displacing with primary piston inside master cylinder which has permanent magnet and magnetic field detector, where detector controls ignition of stoplight|
    EP2072969A1|2007-12-21|2009-06-24|Robert Bosch GmbH|Linear sensor with angle transmission and movement by cable|
    DE102008020934A1|2008-04-25|2009-10-29|Lucas Automotive Gmbh|Master brake cylinder arrangement with actuation detection for a motor vehicle brake system and motor vehicle brake system|
    EP2407361A1|2010-07-12|2012-01-18|Robert Bosch GmbH|Master cylinder device for a car|
    DE102012022519A1|2012-11-16|2014-05-22|Lucas Automotive Gmbh|Master brake cylinder arrangement with actuation detection for a motor vehicle brake system|
    DE3020390C2|1980-05-29|1983-03-24|Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen|Working cylinder|
    FR2913937B1|2007-03-22|2009-05-01|Bosch Gmbh Robert|METHOD AND SERVOMOTOR FOR DETECTING THE BRAKE OF A VEHICLE AND METHOD OF MANUFACTURING SUCH A SERVOMOTOR|
    DE102010027308A1|2010-07-16|2012-01-19|Lucas Automotive Gmbh|Sensor assembly for a master cylinder|
    DE102012200649A1|2011-02-04|2012-08-09|Continental Teves Ag & Co. Ohg|Device for monitoring position and movement of brake pedal for braking system of motor vehicle, has position indicator to monitor position of brake pedal, which is guided in guide tube and secured parallel to housing of master cylinder|
    DE102011085740A1|2011-11-03|2013-05-08|Continental Teves Ag & Co. Ohg|Inductive displacement sensor|
    CN104245448B|2012-02-14|2017-03-08|大陆-特韦斯贸易合伙股份公司及两合公司|There is the position of the piston that can move along a straight line for non-contact type monitoring and the master cylinder of the device of motion|
    KR101594318B1|2014-10-13|2016-02-16|주식회사 만도|Brake master cylinder|
    KR102345500B1|2015-05-06|2022-01-03|주식회사 만도|Brake master cylinder|KR101594318B1|2014-10-13|2016-02-16|주식회사 만도|Brake master cylinder|
    KR102345500B1|2015-05-06|2022-01-03|주식회사 만도|Brake master cylinder|
    DE102016005377A1|2016-05-04|2017-11-09|Fte Automotive Gmbh|Hydraulic cylinders, in particular master brake cylinders for hydraulic brake systems|
    JP6437029B2|2017-03-17|2018-12-12|本田技研工業株式会社|Actuator and fluid pressure control circuit having the same|
    法律状态:
    2016-06-21| PLFP| Fee payment|Year of fee payment: 2 |
    2016-12-23| PLSC| Search report ready|Effective date: 20161223 |
    2017-06-21| PLFP| Fee payment|Year of fee payment: 3 |
    2018-06-25| PLFP| Fee payment|Year of fee payment: 4 |
    2020-06-23| PLFP| Fee payment|Year of fee payment: 6 |
    2021-06-22| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1555715A|FR3037547B1|2015-06-22|2015-06-22|MASTER CYLINDER TANDEM EQUIPPED WITH A STOP LIGHT SWITCH|
    FR1555715|2015-06-22|FR1555715A| FR3037547B1|2015-06-22|2015-06-22|MASTER CYLINDER TANDEM EQUIPPED WITH A STOP LIGHT SWITCH|
    DE102016206496.7A| DE102016206496A1|2015-06-22|2016-04-18|Tandem master cylinder equipped with a brake light switch|
    US15/187,313| US20160368415A1|2015-06-22|2016-06-20|Tandem master cylinder equipped with a stoplight switch|
    CN201610448070.2A| CN106257061A|2015-06-22|2016-06-21|It is equipped with the tandem master cylinder of stop light switch|
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