• 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 present invention relates to a hydraulic cylinder comprising, on the one hand, a body (1) which encloses a piston (2) provided with a rod (T) and, on the other hand, a guide sleeve (2). the piston engaged, at least partially, in the rear part (1a) of said body, characterized in that it comprises bayonet connection means providing the removable connection between the body (1) and the sleeve (2), interlayer sealing means and reversible locking means of this connection.
    公开号:FR3022306A1
    申请号:FR1455454
    申请日:2014-06-13
    公开日:2015-12-18
    发明作者:Christophe Mollier；Valery Henault
    申请人:Valeo Embrayages SAS；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a hydraulic cylinder. More specifically, the invention relates to a novel hydraulic cylinder structure which finds specific application in the field of hydraulic controls of clutch systems or brake systems of motor vehicles. These hydraulic control devices generally comprise a master cylinder said transmitter cylinder containing a piston whose rod is connected to a pedal (clutch or brake) which is actuated by the driver of the vehicle. In the clutch systems, this master cylinder is connected via a hydraulic fluid line to a downstream cylinder, said receiving cylinder, which acts directly on the means making it possible to couple (clutch phase) or decouple (disengage phase) on flywheel of the gearbox. The emitter cylinder generally has small dimensions and is made, at least partially, by molding thermoplastic or thermosetting materials. Both for economic and environmental reasons and, mainly, to facilitate the initial assembly of the cylinder and subsequent recycling of its various constituent materials, this cylinder consists of the assembly of several parts. There are already hydraulic cylinders made in several parts. These cylinders comprise a body closed at its rear part by a socket insert and which contain a piston integral with a rod projecting outwardly through the sleeve. The bushing also forms a plunger guide liner, which comes to the rear end abutting against a fork attached to the bushing. However, in these embodiments, the connection between the body and the socket is provided by complex means that are difficult to implement without elaborate tools. Thus in EP 0345451, it is intended to assemble the sleeve by screwing into the body. In this case, it is necessary to make a tapping on the inner wall of the body and a corresponding thread on the outer wall of the sleeve. However the threading is difficult to achieve by molding and this method of assembly presents risks of both jamming and sealing rupture, in particular, given the small dimensions of the cylinder and possibly different materials that are in contact. In FR 2794508, the sleeve is welded into the body. This connection mode requires a welding station and has, moreover, the disadvantage of not being removable. In AU 198665731, the sleeve is irreversibly snapped into the body which does not allow its subsequent disassembly to perform maintenance or recycling of the cylinder material after use.
    [0002] The present invention aims to solve these technical problems satisfactorily and reliably by proposing a simple solution to implement industrially and economically advantageous.
    [0003] This object is achieved according to the invention by means of a hydraulic cylinder, characterized in that it comprises bayonet assembly means providing the removable connection between the body and the socket, spacer sealing means and means reversible locking of this link.
    [0004] According to a first advantageous characteristic of the invention, the locking means comprise a detachable fork slidably receiving the rod and at least one of the ends protruding through a slot in the wall of the bushing to come hang in a niche of the back part of the body.
    [0005] According to a specific variant, the fork has a central receiving orifice of the rod delimited on its inner edge by an annular chamfer forming end stop for a flange carried by the inner end of the rod.
    [0006] According to a second advantageous characteristic, the sealing means comprise at least one annular seal compressed by the inner end of the sleeve against the inner wall of the body during its assembly with the sleeve.
    [0007] According to a third advantageous characteristic, the assembly means comprise at least two peripheral lugs carried by the outer wall of the sleeve cooperating, firstly by axial translation and then by rotation of the sleeve, with at least two corresponding grooves formed on the wall. interior of said body.
    [0008] According to a variant, the inner wall of the rear portion of the body comprises at least two longitudinal cavities forming slides for the ears during the translation of the sleeve in the body.
    [0009] Preferably, the inner ends of the cavities are closed by a radial wall forming a stop for the ears during the translation of the sleeve. According to other variants of the invention, the grooves open out of the body via at least one hearing while the ears consist of cylinder portions with beveled longitudinal edges.
    [0010] According to an advantageous variant, said grooves open out at one of their ends via an opening and are closed at their other end by a lug forming a stop for the rotation of said lugs.
    [0011] Another object of the invention is a method of manufacturing a cylinder as defined above, characterized in that the sleeve is inserted in axial translation in the rear part of the body by engaging the ears in the cavities forming slides and, once the ears are in abutment, the sleeve is rotated a fraction of a turn so as to engage the ears in the grooves, the piston and its rod are then inserted into the socket and the assembly is locked in position. mounting the fork through the bushing and around the stem and locking its rotating end in the crenel of the back part of the body.
    [0012] Yet another object of the invention is a clutch or brake control system for a motor vehicle comprising an operating member that can be actuated by the driver, a slave cylinder connected kinematically to coupling and uncoupling means. of the clutch or brake and a transmitter cylinder according to the first object of the invention, characterized in that the piston is kinematically connected to the actuating member while the emitter cylinder is hydraulically connected to the receiving cylinder. Thanks to the invention, it is possible to reduce the cost of the hydraulic control device, in particular by simplifying the assembly of the constituent elements of the emitter cylinder. Together with the easily removable nature of the cylinder, the device becomes easily recyclable.
    [0013] The invention will be better understood on reading the description and drawings explained below.
    [0014] FIGS. 1A, 1B and 1C show, respectively, a perspective view, in axial section and from above, of a first embodiment of the hydraulic cylinder according to the invention.
    [0015] FIGS. 2A, 2B, 2C and 2D show views, respectively, in perspective, in axial section and in section along planes CC and DD from the left side (FIG. 2B), of the body of the cylinder according to FIG. 1A. Figure 2E shows a sectional view of a variant of the body of Figure 2C.
    [0016] Figure 2F shows a sectional view of a variant of the body of Figure 2C but here from the right side. 3A, 3B, 3C and 3D show views, respectively, in perspective, rear profile, in axial section along the plane CC (Figure 3B) and side, the sleeve of the cylinder according to Figure 1A. The hydraulic cylinder shown in the figures is intended to be used as master cylinder or transmitter cylinder in a hydraulic clutch control of motor vehicles.
    [0017] Such a cylinder could, however, also be used in other hydraulic applications without departing from the scope of the invention. This cylinder comprises a body 1 which encloses a piston P provided with a rod T. A sleeve 2 for guiding the piston P is engaged, at least partially, in the rear part of the body 1, as illustrated in FIG. 1A. In a complementary manner and according to the invention, this cylinder also comprises bayonet assembly means providing the detachable connection between the body 1 and the sleeve 2 as well as interposed sealing means and reversible locking means of this connection which will be described in detail later.
    [0018] The sealing means are said to be interposed because they seal the connection between the inner wall of the body and the outer wall of the sleeve which is engaged in the rear part of the body.
    [0019] In the embodiment shown in FIG. 1B, the primary seal is ensured by the use of at least one annular or O-ring seal, said primary seal 4 which is locked by bearing against an internal shoulder 14 of the body 1. The shoulder 14 is adjusted according to the respective thicknesses of the walls of the body 1 and the sleeve 2 and ensures their nesting coaxial and flush.
    [0020] The dynamic sealing means here comprise, in addition, another annular seal 4 'said secondary seal which is compressed, in an intermediate manner, by the inner end of the sleeve 2 against the outer wall of the piston P during its assembly with the sleeve and which is disposed behind said primary seal.
    [0021] The static seal is completed by an annular or ring seal 4 "which is compressed radially in a peripheral groove 23 of the sleeve 2 against the inner wall of the body 1.
    [0022] Still according to the invention, the assembly means of the body with the sleeve are of the bayonet type. These means comprise at least two peripheral lugs 21 which protrude from the outer wall of the sleeve 2 and which cooperate with at least two corresponding grooves 10 formed on the inner wall of the body 1. The lugs 21 consist of cylinder portions with longitudinal bevelled edges, as shown in FIG. 3A, while the grooves 10 have an at least partially cylindrical profile and dimensions adapted to those of the ears 21.
    [0023] The ears are reinforced by transverse ribs 21a.
    [0024] Each of the grooves 10 opens out of the body 1 via at least one hearing and, in the embodiment illustrated by Figures 1A, 2A and 2C, via two louvers 10a.
    [0025] However, in the variant illustrated in Figures 2E and 2F, the grooves 10 are open at one of their ends via gills 10b while their other end is closed by an inner lug 30. This lug serves as a stop in Rotation for the ears 21. This is a very useful stop when the rotation of the sleeve 2 inside the body 1 because the angular position of these lugs 30 being determined, the risk of error of editing becomes non-existent. The lugs 30 also make it possible to stiffen the body 1 in this part which is relatively fragile.
    [0026] The bushing 2 is provided on its inner wall with a longitudinal groove 22 (FIGS. 3A, 3B and 3C) ensuring the rotation locking of the piston P and, on its outer wall, a flange 24 (FIGS. 1B, 3A). , 3C and 3D). The assembly of the body 1 and the sleeve 2 is carried out as follows.
    [0027] In a first phase, the sleeve 2 is introduced by axial translation forward in the rear part of the body 1. During this phase, each of the lugs 21 slides in a longitudinal cavity 11 forming a slide which is formed in the wall inside the rear part of the body 1 (see Figure 2A). This translation continues until the stroke of the sleeve is stopped by abutting the ears against walls 12 of the body 1 which extend radially inwardly (Figure 2F). Each of these walls 12 delimits one of the grooves 10 so that the rotation of the sleeve 2 by a fraction of a turn (in one direction or the other if the lugs are diametrically opposed and identical) then leads to engage and then to slidably move the ears 21 in the curvilinear grooves 10.
    [0028] The angular travel of the ears 21 is guided in the grooves 10 and continues until their beveled ends are opposite lugs 10a, as shown in Figure 1A and finally arrive in abutment. The bayonet assembly of the sleeve 2 in the body 1 is then completed and the joints 4, 4 ', 4 "are in the sealing position.The following phase consists of inserting the piston P and its rod T into the socket 2 from behind until the piston enters the body 1.
    [0029] In the embodiment illustrated in FIG. 1B, the piston Pet rod T are separably connected by a rod F assembled by interference and a ball joint R. Furthermore, the inner part of the rod T carries a collar C arranged to near the rotule R.
    [0030] The last phase is to lock the assembly and then close the socket by a shutter B (see Figure 1B) snapped here on the rear edge of the sleeve 2 and cooperating with its flange 24, so as to prevent the entry of foreign bodies (dust, ...).
    [0031] For this purpose, the locking means of the sleeve 2 in the body 1 comprise a removable fork 3 receiving the rod T of the piston P slidably, as shown in Figures lA and 1B.
    [0032] The fork 3 has a central orifice 30 (FIG. 1B) for receiving the rod T. This orifice is delimited, on its inner edge, by a chamfer or annular radius 30a forming a limit stop for the flange C of the rod T. .
    [0033] At least one of the ends of this fork protrudes through a slot 20 formed in the wall of the sleeve 2.
    [0034] In the embodiment shown, the sleeve 2 is provided with two diametrically opposed slots 20 in which the two ends of the fork 3 are wedged by locking, externally, in a slot 13 of the rear portion 1a of the body 1 .
    [0035] In this position, no relative movement of the sleeve relative to the body is no longer possible and the sealed assembly is locked.
    权利要求:
    Claims (12)
    [0001]
    REVENDICATIONS1. Hydraulic cylinder comprising, on the one hand, a body (1) which encloses a piston (P) provided with a rod (T) and, on the other hand, a sleeve (2) for guiding the piston engaged, at least partially , in the rear part (1a) of said body, characterized in that it comprises bayonet assembly means providing the removable connection between the body (1) and the sleeve (2), interposed sealing means and reversible locking means of this connection.
    [0002]
    Hydraulic cylinder according to Claim 1, characterized in that the said locking means comprise a detachable fork (3) slidably receiving the rod (T) and at least one of the ends protruding through a slot. (20) formed in the wall of the sleeve (2) to be locked in a slot (13) of the rear part (1a) of the body (1).
    [0003]
    3. Hydraulic cylinder according to the preceding claim, characterized in that said fork (3) has a central orifice (30) for receiving the rod (T) delimited on its inner edge by an annular chamfer (30a) forming end stop of stroke for a collar (C) carried by the inner end of the rod.
    [0004]
    4. Hydraulic cylinder according to one of the preceding claims, characterized in that said sealing means comprise at least one annular seal (4, 4 ') compressed by the inner end of the sleeve (2) against the inner wall of the body (1) when assembled with the socket.
    [0005]
    5. Hydraulic cylinder according to one of the preceding claims, characterized in that said connecting means comprise at least two peripheral lugs (21) carried by the outer wall of the sleeve (2) and cooperating, firstly by axial translation. , then by rotation of the sleeve, with at least two corresponding grooves (10) formed on the inner wall of said body.
    [0006]
    6. Hydraulic cylinder according to the preceding claim, characterized in that the inner wall of the rear portion (1a) of the body (1) comprises at least two longitudinal cavities (11) forming slides for the ears (21) during the translation of the socket (2) in the body.
    [0007]
    7. Hydraulic cylinder according to the preceding claim, characterized in that the inner ends of said cavities (11) are closed by a radial wall (12) forming a stop for the ears (21) during the translation of the sleeve (2). ).
    [0008]
    8. Hydraulic cylinder according to one of claims 5 to 7, characterized in that said grooves (10) open out of the body via at least one hearing (10a, 10b).
    [0009]
    9. Hydraulic cylinder according to the preceding claim, characterized in that said grooves open out at one of their ends via an opening (10b) and are closed at their other end by a lug (30). forming a stop for the rotation of said ears (21).
    [0010]
    10. Hydraulic cylinder according to one of claims 5 to 9, characterized in that said lugs (21) consist of cylinder portions with beveled longitudinal edges (21a).
    [0011]
    11. A method of manufacturing a removable cylinder according to at least one of claims 5 to 10, characterized in that the sleeve (2) is introduced in axial translation in the rear part (1a) of the body (1). engaging the ears (21) in the cavities (11) forming slides and, once the ears abut, is rotated the sleeve a fraction of a turn to engage the ears in the grooves (10), then inserts the piston (P) and its rod (T) in the sleeve (2) and then locks the assembly by mounting a fork (3) through the sleeve (2) and around the rod (T) and blocking its end in rotation in a slot (13) of the rear part (1a) of the body (1).
    [0012]
    12. A clutch or brake control system for a motor vehicle comprising an actuator that can be actuated by the driver, a slave cylinder connected kinematically to means for coupling and disengaging the clutch or the brake. Emitter cylinder according to one of claims 1 to 9, characterized in that the piston (P) is kinematically connected to the operating member while the emitter cylinder is hydraulically connected to the receiver cylinder.
    类似技术:
    公开号 | 公开日 | 专利标题
    FR3022306A1|2015-12-18|HYDRAULIC CYLINDER, METHOD FOR MANUFACTURING THE SAME, AND CLUTCH OR BRAKE CONTROL SYSTEM COMPRISING SAID CYLINDER
    EP0890054B1|2002-07-24|Improved tight rapid action pipe coupling
    EP2735781A1|2014-05-28|Female quick coupling element and quick acting coupling with such an element.
    FR2569247A1|1986-02-21|PRESSURIZED FLUID CONTROL CLUTCH DEVICE FOR CLUTCHES AND IN PARTICULAR FOR CLUTCHES OF A MOTOR VEHICLE
    EP0877891B1|2002-12-18|Tight rapid action pipe coupling
    EP1862720B1|2010-06-30|Female connection element and quick connection including such an element
    EP1146244A1|2001-10-17|Clutch release bearing
    FR2924185A1|2009-05-29|Clutch master cylinder for clutch of motor vehicle, has collar with front side cooperating with rear edge of piston, where rod is separated angularly above determined angle, where collar applies axial compression force on piston
    FR2651846A1|1991-03-15|Clutch release mechanism
    FR2779489A1|1999-12-10|DEVICE FOR HYDRAULICALLY CONTROLLING A BRAKE OR CLUTCH, PARTICULARLY FOR A MOTOR VEHICLE
    FR2816900A1|2002-05-24|Hydraulic system for car, e.g. clutch control system, has de-aeration valve comprising de-aeration plug which fits into casing in fluid-tight manner when valve is closed
    EP1075406B1|2003-09-03|Improved hydraulic control device for clutch in particular for motor vehicles
    EP1102694B1|2006-06-14|Simplified hydraulic control device for a clutch, especially for an automobile
    EP3301341B1|2019-07-24|Coupling and hydraulic braking circuit for cycle incorporating such a coupling
    WO2002014705A1|2002-02-21|Device for coupling a lever to a shift cylinder piston
    FR2733571A1|1996-10-31|WATERPROOF HYDRAULIC CONNECTION
    FR2794499A1|2000-12-08|Clutch master cylinder for motor vehicle has retainer circlip fixed to piston rod extension and mounted on cylinder housing
    FR2779496A1|1999-12-10|Hydraulic clutch control for motor vehicle
    EP3798490B1|2022-02-23|Fluid connector
    EP1349760B1|2008-03-05|Master cylinder piston and device for mounting a check valve therein
    FR2779499A1|1999-12-10|Hydraulic clutch control for motor vehicle
    CN113825922A|2021-12-21|Hydraulic cylinder, in particular for controlling a friction clutch in a motor vehicle
    FR2779498A1|1999-12-10|Hydraulic clutch control for motor vehicle
    FR2790294A1|2000-09-01|Break and clutch hydraulic control unit for cars includes inner bore with front and rear parts formed in front and rear parts of cylinder body and seal housed in central component of cylinder body
    FR2779497A1|1999-12-10|Hydraulic clutch control for motor vehicle
    同族专利:
    公开号 | 公开日
    KR20170020772A|2017-02-24|
    WO2015189061A1|2015-12-17|
    DE112015002795T5|2017-03-02|
    FR3022306B1|2017-01-27|
    CN106460876A|2017-02-22|
    CN106460876B|2019-04-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0778425A1|1995-12-05|1997-06-11|Valeo|Improved hydraulic clutch actuator for a motor vehicle|
    FR2954421A1|2009-12-17|2011-06-24|Schaeffler Technologies Gmbh & Co Kg|Housing for component within hydraulic controlled system, particularly master cylinder of clutch- or brake system of vehicle, has housing part and another housing part, in which axially movable piston is supported by actuation of piston rod|
    DE102011086815A1|2010-12-20|2012-06-21|Schaeffler Technologies Gmbh & Co. Kg|Housing for e.g. master cylinder of clutch or brake system of vehicle within hydraulic track, has additional securing component e.g. locking ring, arranged in region of plug connector for securing plug connector|
    DE3436312A1|1984-10-04|1986-04-10|Volkswagen AG, 3180 Wolfsburg|Pressure transducer for a hydraulic system|
    DE19537423A1|1995-10-07|1997-04-17|Schaeffler Waelzlager Kg|Master cylinder|
    CN201944146U|2011-01-04|2011-08-24|浙江吉利汽车研究院有限公司|Clutch master pump with low noise|
    CN203161897U|2013-01-29|2013-08-28|安徽江淮汽车股份有限公司|Clutch master cylinder used for start stop system|
    CN203441869U|2013-09-09|2014-02-19|莱芜钢铁集团有限公司|AGC hydraulic cylinder|DE112017000878A5|2016-02-18|2018-10-25|Schaeffler Technologies AG & Co. KG|Clutch Master Cylinder|
    DE102016218421A1|2016-09-26|2018-03-29|Continental Teves Ag & Co. Ohg|Brake device for a hydraulic motor vehicle brake system|
    FR3069594B1|2017-07-31|2019-08-23|Valeo Embrayages|CLUTCH ACTUATOR|
    CN108216176B|2018-01-24|2020-12-22|浙江黎盛新材料科技有限公司|Special braking method for new energy automobile|
    CN108082167B|2018-01-24|2020-10-27|威马汽车科技集团有限公司|Special brake valve of new energy automobile|
    IT201900006706A1|2019-05-10|2020-11-10|Raicam Driveline S R L|Hydraulic cylinder, particularly for controlling a friction clutch in a motor vehicle|
    法律状态:
    2015-06-30| PLFP| Fee payment|Year of fee payment: 2 |
    2015-12-18| PLSC| Search report ready|Effective date: 20151218 |
    2016-07-08| PLFP| Fee payment|Year of fee payment: 3 |
    2017-06-30| PLFP| Fee payment|Year of fee payment: 4 |
    2018-06-29| PLFP| Fee payment|Year of fee payment: 5 |
    2020-06-30| PLFP| Fee payment|Year of fee payment: 7 |
    2021-06-30| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1455454A|FR3022306B1|2014-06-13|2014-06-13|HYDRAULIC CYLINDER, METHOD FOR MANUFACTURING THE SAME, AND CLUTCH OR BRAKE CONTROL SYSTEM COMPRISING SAID CYLINDER|FR1455454A| FR3022306B1|2014-06-13|2014-06-13|HYDRAULIC CYLINDER, METHOD FOR MANUFACTURING THE SAME, AND CLUTCH OR BRAKE CONTROL SYSTEM COMPRISING SAID CYLINDER|
    PCT/EP2015/062099| WO2015189061A1|2014-06-13|2015-06-01|Hydraulic cylinder, production method thereof and clutch or brake control system comprising said cylinder|
    KR1020167034796A| KR20170020772A|2014-06-13|2015-06-01|Hydraulic cylinder, production method thereof and clutch or brake control system comprising said cylinder|
    DE112015002795.5T| DE112015002795T5|2014-06-13|2015-06-01|Hydraulic cylinder, its manufacturing process and clutch or brake control system with this cylinder|
    CN201580031752.7A| CN106460876B|2014-06-13|2015-06-01|Hydraulic cylinder, its manufacturing method and clutch or brake control system including the cylinder|
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