Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
  • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
  • B60T11/16—Master control, e.g. master cylinders
  • B60T11/236—Piston sealing arrangements
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
  • B60T17/08—Brake cylinders other than ultimate actuators
  • B60T17/083—Combination of service brake actuators with spring loaded brake actuators
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49826—Assembling or joining

Definitions

• the invention relates to a combined Cellbrenns- and spring brake cylinder for brake systems of vehicles according to the preamble of claim 1 and a method for its preparation according to claim 8.
• a generic combined service brake and spring brake cylinder is known for example from DE 40 1 1 739 A1, wherein the Bayonet closure between the spring brake cylinder and the intermediate wall comprises a separate bayonet ring, which engages over both locking elements of the Federspei- Brembretterzyl and locking segments of the intermediate wall with its radially inwardly facing bayonet segments.
• annular seal is arranged between the radially inner circumferential surface of the locking elements having the end edge of the Feder arrivedbremszylin- and a radially inner peripheral surface of the annular chamber, which seals the ventilated and ventable pressure chamber from the environment.
• the ring seal is held in a groove on the radially inner peripheral surface of the annular chamber.
• the object of the invention is in contrast to train a combined service brake and spring brake cylinder of the type mentioned in such a way that it ensures improved sealing of the pressure chamber of the spring brake cylinder.
• the independent claim 6 indicates a method for producing such a combined service brake and spring brake cylinder. Disclosure of the invention
• a recess in the bottom of the annular chamber for receiving at least one end portion of the ring seal, as well as on the locking segments of the spring brake cylinder front contact surfaces are provided to stop on the bottom stop surface in the annular chamber, wherein at least the end portion of the ring seal between the recess is clamped in the bottom of the annular chamber and the edge of the wall of the spring brake cylinder.
• the method for producing the combined service brake and spring brake cylinder then includes at least the following steps: a) positioning the ring seal on the radially inwardly facing peripheral surface of the annular chamber and the end portion of the annular seal in the recess in the bottom of the annular chamber,
• the recess in the bottom of the annular chamber allows centering of the ring seal before the assembly of spring brake cylinder and partition wall in a defined position. This centering contributes to the fact that the annular seal during the locking of the bayonet closure by translational insertion of the edge of the wall of the spring brake Cylinder is not moved from its defined position.
• the abutment of the frontal contact surfaces on the locking segments of the spring brake cylinder at the abutment surface at the bottom of the annular chamber contributes to the fact that the annular seal is not overly squeezed and thus damaged during the translatory insertion of the edge of the wall of the spring brake cylinder.
• a defined, available space for the end portion of the ring seal is specified.
• the contact surfaces of the locking segments of the spring brake cylinder extend over the entire segment arc and have, as axial recesses formed in an end face of the edge of the wall of the spring brake cylinder, from this a distance of 0.1 to 0.3 mm. These low-level in the axial direction recesses on which the contact surfaces are formed, prevent too deep penetration of the edge of the wall in the annular chamber and thus excessive clamping and damage to the ring seal.
• the contact surfaces of the Verriegelungsseg- elements of the spring brake cylinder extending at a distance of 2.1 mm to 2.3 mm from the radially inwardly facing peripheral surface of the edge of the wall of the spring brake cylinder measured to the radially outwardly facing peripheral surface of the locking segments.
• the bottom-side abutment surface in the annular chamber for the contact surfaces of the locking segments of the spring brake cylinder with respect to the recess in the bottom of the annular chamber for the annular seal is arranged radially on the outside.
• the annular chamber is integrally formed with the intermediate wall. Then, on the production of a bayonet ring as in DE 40 1 1 Be omitted 739 A1, which simplifies the production of the combined service brake and spring brake cylinder.
• the annular seal is formed in a bone-like manner in cross-section, with bead-shaped end sections and with a center section constricted in contrast thereto. Then, the other end portion of the ring seal is elastically clamped in the radial direction between a radially inwardly facing peripheral surface of the edge of the wall of the spring brake cylinder and a radially outwardly facing peripheral surface of the annular chamber of the intermediate wall. This provides a seal and a traction that hinders a release of the bayonet closure.
• 1 is a cross-sectional view of a combined service brake
• Fig. 2 is a perspective view of the combined service brake and spring brake cylinder of Fig. 1 during assembly of a bayonet lock;
• Fig. 1 of the drawing is an exemplary explanation of the invention, a combined service brake and spring brake cylinder, below Called combination cylinder 1, shown.
• the combination cylinder 1 consists of a service brake cylinder 3 and a structurally and functionally connected spring brake cylinder 5; the service brake cylinder and the spring brake cylinder are separated from one another by an intermediate wall 7.
• a piston 9 is slidably disposed, wherein on one side of the piston 9, a memory spring 1 1 is present.
• the memory spring 1 1 is supported on its opposite side on the bottom 13 of the spring brake cylinder 5 from.
• the pressure chamber 21 opens an inlet 24, via which compressed air is admitted for actuating the service brake cylinder.
• the compressed air acts on the diaphragm 25 inserted within the service brake cylinder 3, on whose opposite side a thrust piece in the form of a diaphragm plate 27 is provided.
• the diaphragm plate is connected to a pressure rod 29, which extends from the left with respect to the membrane 25 existing chamber 30 of the service brake cylinder and (not shown) cooperates with a brake actuation mechanism outside of the combination cylinder 1.
• This may be, for example, the operating parts of a disc brake of a motor vehicle.
• the wall 31 of the spring-loaded brake cylinder 5 is preferably made of steel or aluminum.
• a bayonet closure 33 illustrated in FIG. 2 and FIG. 3 is provided for releasable connection of the spring brake cylinder 5 with the intermediate wall 7.
• the bayonet lock 33 has radially outwardly projecting locking segments 37 and radially inwardly shaped recessed segments 39 at an end edge 35 of the wall 31 of the spring brake cylinder 5 and corresponding thereto formed on a at the end edge 41 of the intermediate wall 7 annular chamber 43 radially outwardly molded Aus smoothlyungssegmente 45 and in the annular chamber 43 radially inwardly projecting locking segments 47.
• locking segments 37, 47 and recess segments 39, 45 alternately alternate over the circumference and each have the same segment arc length.
• the locking segments 37 and the recess segments 39 of the spring brake cylinder 5 are preferably arranged directly at the end edge 35 of the wall 31 as well as the locking segments 47 and the Aus originallyungssegmente 45 of the intermediate wall 7 are arranged directly at the edge 41.
• a bottom-side stop surface 49 in the annular chamber 43 acts as an axial stop for contact surfaces 50 of the locking segments 37 at the end-side edge 35 of the wall 31 of the spring brake cylinder 5, when this edge 35 is translationally inserted into the annular chamber 35, as will be described in more detail later ,
• ring seal 55 is provided, as shown in particular in Figure 3 visible is.
• the ring seal 55 is designed in particular as a cylindrical ring section.
• the annular chamber 43 is integral with the edge 41 of the intermediate wall 7 and in the axial direction of the frontal and annular incision in the end, to the edge 35 of the wall 31 of the Feder acknowledged- brake cylinder 5 facing edge 41 of the intermediate wall 7 is formed.
• a radially inner, annular recess 61 is formed at the bottom 59 of the annular chamber 43.
• the bottom-side stop surface 49 in the annular chamber 43 with respect to the recess 61 in the bottom 59 of the annular chamber 43 for the annular seal 55 is disposed radially outward.
• the contact surfaces 50 of the locking segments 37 of the spring brake cylinder 5 each extend over the entire segment arc length and, as axial recesses in an end face 57 of the edge 35 of the wall 31 of the spring brake cylinder 5, extend from the latter Distance from 0.1 mm to 0.3 mm (in Figure 4, for example, 0.3 mm). Furthermore, the contact surfaces 50 of the locking segments 37 of the spring brake cylinder 5 extend at a distance of 2.1 mm to 2.3 mm (in Figure 4, for example 2.3 mm) from the radially inwardly facing peripheral surface 51 of the edge 35 of the wall 31st of the spring brake cylinder 5 measured up to a radially outwardly facing peripheral surface 63 of the locking segments 37.
• the length of the locking segments seen in the axial direction is approximately 9.8 mm.
• the end face 57 of the edge 35 of the wall 31 has no recess and then forms the contact surface 50 with a radially outer portion itself.
• the ring seal 55 is bone-like in cross-section, with bead-shaped end portions 65 and 71 and with a contrast constricted middle portion 69th
• the bayonet lock 33 is locked or closed as follows: First, the annular seal 55 is secured to the radially inwardly facing peripheral surface 53 of FIG Annular chamber 43 and in particular its end portion 65 in the recess 61 in the bottom 59 of the annular chamber 43 is positioned. The ring seal 55 and its end portion 65 is provided for this purpose with a corresponding inner diameter. Then the end edge 35 of the wall tion 31 of the spring brake cylinder 5 in the Ringkannnner 43 of the intermediate wall 7 translationally introduced, as symbolized by the arrow 1 in Fig. 2.
• the edge 37 of the spring brake cylinder cushions somewhat in the axial direction due to the elastic spring forces of the axially clamped and compressed end section 65 of the ring seal 55 Ring chamber 43, so that in the locked state of the bayonet lock 33, the contact surfaces 50 of the locking segments 37 of the spring brake cylinder 5 from the stop surface 49 on the bottom 59 of the annular chamber 43 are axially spaced a piece and the positive connection between the locking segments 37, 47 come about can or is maintained.
• the bayonet lock 33 remains under tension. Furthermore, unlocking the bayonet lock is prevented by two locking pins, not shown here. This condition is shown in FIG. Thus, the bayonet lock 33 is locked.

Landscapes

• Engineering & Computer Science (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Braking Arrangements (AREA)
• Transmission Of Braking Force In Braking Systems (AREA)
• Braking Systems And Boosters (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Related Child Applications (1)

Publications (1)

Family

ID=46968209

Family Applications (1)

Country Status (8)

Cited By (4)

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Citations (2)

Family Cites Families (9)

• 2011
  • 2011-10-07 DE DE102011115122A patent/DE102011115122A1/de not_active Ceased
• 2012
  • 2012-10-01 HU HUE12766972A patent/HUE030333T2/en unknown
  • 2012-10-01 IN IN875KON2014 patent/IN2014KN00875A/en unknown
  • 2012-10-01 PL PL12766972.9T patent/PL2763877T3/pl unknown
  • 2012-10-01 WO PCT/EP2012/069371 patent/WO2013050329A1/de not_active Ceased
  • 2012-10-01 CN CN201280057323.3A patent/CN103946088B/zh active Active
  • 2012-10-01 EP EP12766972.9A patent/EP2763877B1/de active Active
• 2014
  • 2014-04-04 US US14/245,395 patent/US9487200B2/en active Active

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