• 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 mechanical engineering, in particular to transport engineering, and can be used in braking systems of self-propelled machines. The aim of the invention is to increase the service life of the master brake cylinder by eliminating the additional deformation of the elastomer cuff (EM). The main brake cylinder includes a housing 1 with a cavity 2 and a piston 3 installed in it. The piston 3 has a head part 4 which interacts with an EM 10. The EM 10 is installed in a cavity 2. It contacts during the working stroke with the shoulder (B) 7 of the head part 4 and hermetically separates the working chamber 1 from the feed chamber 12. The retaining ring 17 is installed in the cavity 2. It is intended to displace the EM 10 from the B 7 of the head part 4 in the final position of the piston 3, determined by placing the stop 14 in the housing 1. piston 3 B 7 and retaining ring 17 pin Editin with EM 10 along the plane annular zazo- zero rum therebetween. This eliminates the additional deformation of the EM 10 and increases its service life, 5 Il. I SU) оо 4 Ол; о со s Рig1
    公开号:SU1340599A3
    申请号:SU813230708
    申请日:1981-01-16
    公开日:1987-09-23
    发明作者:КАДЕДДУ Леонардо
    申请人:Бендиталия С.П.А. (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to mechanical engineering, in particular to transport engineering, and can be used in brake systems of self-propelled machines.
    The aim of the invention is to increase the service life of the master brake cylinder by eliminating the additional deformation of the elastomer-cuff due to the elimination of the annular gap between the retaining ring and the piston collar.
    Figure 1 shows the main brake cylinder, longitudinal section; Fig. 2 is a part of the design of the master brake cylinder, highlighted in Fig. 1 by a dash-dotted line; fig.Z - the same at the time of the stroke of the piston; figure 4 - the same, with the return stroke of the piston; fig. 3 - the same, the moment of the position of the protrusion of the cuff with a pressure in the working chamber below atmospheric.
     The master brake cylinder (FIG. 1) includes a housing 1 with a cavity 2, in which a piston 3 is mounted with axial displacement, it has a yush; its head part 4, for the bottom part 5 of larger diameter, sealed in cavity 2, and the central part 6 connecting head 4 and rear 5 parts.
    The head part 4 is made with a shoulder 7 and is installed with the ability of the front end part 8 to interact with the end surface 9 of the cuff cuff 10 made of elastic material, hermetically dividing the cavity 2 into the pressure chamber 11 connected to the car braking system (not shown), and a feed chamber 12 connected to a fluid container (not shown), and a rear end portion 13 that can cooperate with the stop 14. The stop 14 defines the final position of the piston 3 (Fig. 1). I
    A spring 15 is installed between the housing 1 and the cup 16 and the piston 3 spring-loaded to the stop 14. The head part 4 with the collar 7 is placed concentrically relative to the retaining ring 17c with the possibility of joint movement with it towards the cuff 10 and forming a gap relative to the retaining ring 17 in the direction of movement in the opposite direction from the cuff 10. The retaining ring 17 with the end surface 18 is in contact with the elastomer cuff 10, and the other end
    surface 19 is installed with
    interaction with stop 14
    to prevent the cuff 10 from flowing over the surface of the collar 7.
    The width of the locking ring 17 is larger than the width of the collar 7 of the head part 4 of the piston 3. The return device 20 consists of a spring 21 resting at one end on the cup 16, and the other end of the spring-loaded washer 22 to the cuff 10, and the last end to the locking ring 17.
    On the head part 4 is made of the second flange 23, the thickness of which is greater than the thickness of the cuff 10. Burtik
    23 is arranged so as to limit movement of the washer 22 to the side of the collar 7. The spring 21 is selected with an axial force less than the axial force of the spring 15.
    The flange 7 of the head part 4 has a contact surface 24 placed with the possibility of interaction with the counter contact surface 25 of the locking ring 17 in such a way that at any axial displacement of one of them relative to the other, a radial annular gap is formed between them.
    In the proposed, preferred
    In the embodiment of the device design, the interfaced surfaces of the piston 3 and the retaining ring M are formed by a truncated cone, the top of which is located on the axis of the cavity
    2 housing 1 from the side of the cuff 10. The smaller diameter of the truncated surface of the piston 3 is made equal to the corresponding diameter of the locking ring 17. The angle I;
    of the truncated cone and the axis of the cavity 2 is chosen so as to prevent jamming of the locking ring 17 on the head part 4 of the piston to make an angle of about
    this, in this design, the retaining ring 17 is made of steel or bronze, and the piston 3 is made of steel. The sealing cuff 10 is installed with the possibility of simultaneous interaction with the end surfaces 18 and 19, respectively, of the piston 3 and the locking ring 17.
    The role of the stop 14 is performed by the fitting 26, mounted in the housing 1 and having 3, and 18. Besides
    a channel 27 connecting the supply chamber 12 with a container (not shown). In addition, the elastomeric cuff 10 is provided with a protrusion 28 that functions as a check valve.
    The main brake cylinder operates as follows.
    Figure 2 shows the previously described elements in their final position, i.e. when the spring 15 displaces the cup. 1b, the head part 4 abuts against the stop 14, and the retaining ring 17 abuts against the same yndp 14 for
    axial displacement of the elastomer cuff 10 away from the radial collar 7 against the action of the spring 21.
    It should be noted that in this position, the contact surfaces 24 and 25 of the head part 4 and the locking ring 17 are located and distance from each other in the radial direction, resulting in a free passage of fluid between the two chambers 11 and 12. In FIG. elements of the master cylinder are shown in the course of the compression stroke of the piston 3, which moves in the direction indicated by the arrow. The piston 3 moves the retaining ring 17 as a result of the contact surfaces 24 and 25 interacting, and the elastomeric cuff 10 seals two chambers 11 and 12 apart due to its interaction with the cavity 2, and the end surface 9 seals the end surface 8 of the piston 7 of the piston 3 and the end surface 18 of the retaining ring 17.
    In this position, the radial clearance, which takes place in the final position between the contact surfaces 24 and 25, is reduced to almost zero, the end surface 9 of the elastomer cuff 10 is located practically on a flat surface formed by the radial shoulder 7 of the piston 3 and the end surface 18 of the retaining ring 17 taking into account processing tolerances. Such a design significantly reduces the deformation of the elastomer cuff 10.
    During the return stroke of the piston 3, it returns to the stop 14 under the action of the spring 15. As a result, the elastomeric cuff 10 and the retaining ring 17 are displaced against the wall of the cavity 2 until they stop against the washer 22,
    This protrusion 28 of the cuff 10 remains in contact with the end surface 8 of the flange.7 of the piston 3 in order to prevent the return of fluid from the working chamber 11 to the feed chamber 12 through the axial and radial gaps, which at this moment separate the end surface 9
    from the end surface 8 of the flange 10 and the contact surface 24 from the contact surface 25 (figure 4).
    Figure 5 shows the operation of the protrusion 28 of the elastomer cuff 10 during
    3 piston stroke.
    It may happen that under the action. By the action of the spring 15, the piston 3 returns to its final position with such a speed that the pressure in the working chamber 11 immediately falls below atmospheric. Then the protrusion 28 of the elastomer cuff 10 deforms away from the end surface 8 of the shoulder 7 and allows liquids flow from the supply chamber 12 into the working chamber 1 1.
    When the piston 3 completes its rev -: - combat stroke, all the elements of the main cylinder return to the position shown in Fig. 2.
    It should be noted that the movement of the retaining ring 17 as a result of the interaction of the contact-.
    the surfaces 24 and 25, having the shape of a truncated cone, significantly simplify the shape of the piston 3.
    In the proposed construction, the direction of movement of the piston 3 in the cavity 2 is provided, on the one hand, by means of the rear part 5, and on the other hand, by means of a locking ring 17, which during the compression of the piston 3 is the guide for the latter. The machining tolerances selected by the minimum allow automatic centering of the locking ring 17 relative to the piston 3. Due to this, the axial size of the rear part 5 can be significant. reduced
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    The main brake nozzle, comprising a housing with a cavity, a spring-loaded piston with a rod, an annular sealing cuff of elastomer
    pa and a retaining ring installed in the cavity and dividing it into a pressure chamber and a feeding chamber, an abutment for a retaining ring and a piston, the piston being designed as a head part with a collar, placed concentrically relative to the retaining ring with the possibility of joint movement towards the sealing cuff and the possibility of forming a gap relative to the locking ring in the direction of movement to the side opposite to the cuff, and the mating surfaces of the piston and locking ring are formed by a truncated end mustache, the top of which is located on the axis of the cavity of the housing on the side of the sealing cuff, characterized in that, in order to increase
    / Z 15
    21 22
    0
    five
    service life, the piston is made in the form of rigidly interconnected head and rear parts of different diameters, with the rear part made with a larger diameter and placed in the cavity, and the head part is mounted concentric with the retaining ring, the smaller diameter of the truncated surface of the piston is equal to the corresponding diameter of the retainer ring, the width of the locking ring exceeds the width of the piston concentrically mounted in it, the sealing cuff is installed with the possibility of simultaneous interaction with the end faces Piston and retaining ring, and the stop under the retaining ring is installed with the possibility of limiting the stroke of the piston installed in the retaining ring. one. .
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    Editor N.Lazarenko
    Compiled by I.Lukina
    Tehred M. Khodanych Proofreader E. Roshko
    Order 4357/59 Circulation 811 Subscription
    VNIIPI USSR State Committee
    for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d.A / 5
    Production and printing company, Uzhgorod, Projecto st., 4
    Phi2.5
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    同族专利:
    公开号 | 公开日
    BR8100158A|1981-07-28|
    YU41958B|1988-02-29|
    YU5581A|1983-10-31|
    IT1129546B|1986-06-04|
    ES498574A0|1982-04-01|
    AR223909A1|1981-09-30|
    EP0032857B1|1984-01-04|
    US4514985A|1985-05-07|
    ES8203742A1|1982-04-01|
    EP0032857A1|1981-07-29|
    IT8019270D0|1980-01-17|
    DE3161806D1|1984-02-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR872682A|1941-01-21|1942-06-16|Control cylinder for hydraulic brakes|
    US2561009A|1947-10-29|1951-07-17|Wingfoot Corp|Hydraulic brake master cylinder|
    DE809032C|1950-01-31|1951-07-23|Albert Dillenburger|Pressure pump for hydraulic brake systems, in particular for motor vehicles, with a sleeve resting in the housing and serving to seal the interior of the housing from the refill chamber through which the working piston slides|
    GB1001990A|1962-05-25|1965-08-18|Heinz Teves|Improvements in or relating to master cylinders|
    US3165896A|1962-12-15|1965-01-19|Fiat Spa|Hydraulic brake|
    US3264006A|1965-04-23|1966-08-02|Fmc Corp|Anti-dust ring|
    IT1043613B|1975-10-23|1980-02-29|Benditalia Spa|PRESSURE GENERATOR DEVICE ESPECIALLY FOR HYDRAULIC CONTROLS OF MOTOR VEHICLE LOCKS AND CLUTCHES|
    BR7706799A|1976-10-15|1978-07-11|Benditalia Spa|HYDRAULIC MASTER CYLINDER FOR BRAKING SYSTEM, VEHICLE|DE3405967A1|1984-02-18|1985-08-22|Alfred Teves Gmbh, 6000 Frankfurt|HYDRAULIC BRAKE SYSTEM WITH SLIP CONTROL|
    DE3533731A1|1985-09-21|1987-03-26|Teves Gmbh Alfred|Sealing arrangement for a piston/cylinder unit|
    DE3542825C2|1985-12-04|1993-04-22|Alfred Teves Gmbh, 6000 Frankfurt, De|
    US4745751A|1987-02-03|1988-05-24|Allied Corporation|Master cylinder with fast fill valving mechanism|
    DE4233168A1|1992-10-02|1994-04-07|Teves Gmbh Alfred|Master cylinder for vehicle anti-lock brakes - uses control aperture in central valve to avoid seal damage|
    IT1281309B1|1995-04-05|1998-02-17|Alliedsignal Freni Spa|MASTER CYLINDER IN TANDEM, WITH PERFECT SEAL|
    US5535590A|1995-04-06|1996-07-16|General Motors Corporation|Master cylinder with applied brake compensation capability|
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    BR0200348A|2001-02-12|2002-10-08|Luk Lamellen & Kupplungsbau|Hydraulic system|
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    US20090313743A1|2008-06-20|2009-12-24|Craig Jason Hofmeyer|Pants with saggy pants control system|
    DE102011055645A1|2011-11-23|2013-05-23|Gustav Magenwirth Gmbh & Co. Kg|master cylinder|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT19270/80A|IT1129546B|1980-01-17|1980-01-17|MASTER CYLINDER, PARTICULARLY FOR BRAKING SYSTEMS FOR VEHICLES|
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