• 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:

    公开号:FR3017672A1
    申请号:FR1551172
    申请日:2015-02-13
    公开日:2015-08-21
    发明作者:Carl Gaufin
    申请人:TSE Brakes Inc；
    IPC主号:
    专利说明:

    [0001] PIVOT AIR CHAMBER FOR BRAKING SYSTEM. FIELD OF THE INVENTION The present invention generally relates to pneumatic brake systems for vehicles and, in particular, to a pivoting air chamber for such a system. BACKGROUND Heavy trucks, trailers and other commercial vehicles typically use a pneumatic brake system to produce the braking forces necessary to stop the vehicle. Such a system usually includes a brake pedal positioned on the floor of the cab or driver's compartment of the vehicle which, when actuated, supplies air from an air reservoir to an air chamber. The air chamber acts as a pneumatic actuator in that it has an actuator rod 22 that extends out of the air chamber or retracts into the air chamber. this to activate the mechanism that pushes the brake lining material of the brake shoes against the brake drum 23 of the vehicle at each wheel end of the vehicle. The mechanism usually includes a slack adjuster 24 which rotates a cam follower through a camshaft 26 to force the brake shoes to engage the brake drum to stop the vehicle. With reference to FIG. 1, air chambers 20 are usually bolted to a support 30 which has been welded to the axle 32 of a vehicle. While such an approach seems simple, there are a number of disadvantages. There are 25 different torque requirements for the bolts that hold the air chambers on the brackets, and pneumatic tools are required for installation. Lock washers are usually required, as are special bolt head designs to minimize failures. In addition, there are various threads and housing gauges to be dealt with, and it is often difficult to remove the air chamber due to corrosion. In addition, as explained in more detail below, there is an additional bending moment that occurs at the seam where the air chamber is attached to the support. It is necessary to have an air chamber mounting arrangement that addresses at least some of the above problems.
    [0002] SUMMARY OF THE INVENTION According to a first aspect of the present invention, there is provided a pivoting air chamber for a vehicle braking system comprising: a. a mounting bracket adapted to be attached to the vehicle; b. an air chamber housing pivotally mounted on the mounting bracket; c an actuator rod adapted to be connected to the vehicle braking system and extending from the air chamber housing and retracting therein when the actuator rod is actuated; and D. said air chamber housing is pivotable relative to the mounting bracket when the actuator rod is actuated. In one embodiment, the mounting bracket has a pair of pivoting mounting lugs and the air chamber has a pair of mounting lugs that are pivotally connected to the pair of pivotable mounting lugs. The air chamber may include an emergency spring biasing the actuator stem toward the extension from the air chamber and a service spring that biases the actuator rod toward the recess in the chamber. air. In one embodiment, the air chamber has a housing and the emergency spring is positioned within the housing. In a variant, the air chamber comprises a housing and the emergency spring is positioned outside the housing. The actuator rod of the present invention may be constructed of aluminum. In such an embodiment, the actuator rod may include an anodized stroke indicator. The anodized stroke indicator may be a colored strip. The mounting bracket of the present invention may include an adapter support adapted to be attached to a vehicle mount. The actuator rod can be adapted to be attached to a play adjuster of the vehicle brake system. The mounted support can be adapted to be mounted on the axle of the vehicle. In a second aspect of the invention there is provided an air chamber for a vehicle braking system comprising: a. a housing ; b. an actuator rod adapted to be connected to the braking system and extending from the air chamber housing and retracting therein when actuated; c said housing being adapted to be mounted on a support so that the air chamber pivots relative to the support. The air chamber may further include a pair of mounting lugs attached to the housing, the mounting lugs being adapted to be pivotally mounted to the carrier. Each pair of mounting tabs may have a mounting hole. Alternatively, the air chamber may further include a mounting cylinder attached to the housing, the mounting cylinder being adapted to be pivotally mounted on the support. The air chamber of the invention may include an emergency spring biasing the actuator rod toward the extension from the air chamber and a service spring that biases the actuator rod toward the recess. in the air chamber. The air chamber may comprise a housing, the emergency spring being positioned inside the housing. Alternatively, the air chamber may comprise a housing, the emergency spring being positioned outside the housing. The actuator rod can be constructed of aluminum. In such an embodiment, the actuator rod may include an anodized stroke indicator. The anodized stroke indicator may be a colored strip. In a third aspect of the invention, there is provided a method of mounting an air chamber for a braking mechanism on a vehicle, the air chamber having an actuator rod which is actuated to extend from the air chamber and retract therein, comprising the steps of a. mounting a support on a vehicle; b. pivotally mounting the air chamber on the mounting bracket; and c. attaching the actuator rod of the air chamber to the vehicle braking mechanism. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an interior brake system air chamber mounted on a vehicle axle. FIG. 2 is a schematic side elevational view of the prior art braking system air chamber of FIG. 1. FIG. 3 is a schematic side elevational view of an embodiment of the FIG. pivoting air of the present invention. Figure 4 is a front elevational view of an air chamber mounting bracket of the prior art.
    [0003] Fig. 5 is a front elevational view of one embodiment of the air chamber mounting bracket of the present invention. Fig. 6 is a perspective view of an embodiment of the pivoting air chamber and an adapter support of the present invention. FIG. 7 is a front elevational view of the adapter support of FIG. 6. FIGS. 8A and 8B are side elevational views of the pivoting air chamber of FIG. 6 with the actuator shaft retracted and extended, respectively. Figs. 9A and 9B are cutaway views of a quarter of an embodiment of the pivoting air chamber of the invention with the actuator rod in the retracted and extended positions, respectively. Figure 10 is a cutaway view of a quarter of an alternative embodiment of the pivoting air chamber of the present invention having an external emergency spring.
    [0004] Fig. 11 illustrates a stroke indicator in an embodiment of the pivoting air chamber of the present invention.
    [0005] DETAILED DESCRIPTION OF EMBODIMENTS An air chamber of the prior art for a braking system is indicated by 20 in FIG. 2. As previously described, the air chamber 20 is mounted on a vehicle axle 32 by means of of a support 30. The force at the center of gravity of the air chamber 20 is indicated by the arrow 33. When the brakes of the vehicle are actuated, as when the driver presses the brake pedal in the cab of the vehicle, the actuator rod 22 extends from the air chamber 20 so that the play adjuster lever 34 pivots counterclockwise around the shaft 36 and actuates the adjuster game (24 in Figure 1). When the vehicle brake pedal is released, the actuator rod 22 is retracted into the air chamber 20 and the lever 34 is rotated clockwise. Since the air cylinder 20 is fixedly attached to the mounting bracket 30 during the extension of the actuator rod 22 from the air chamber, the bolts or studs 40 securing the air chamber to the air chamber Mounting bracket is subjected to the moment indicated by the arrow 42 while horizontal and vertical forces 44 and 46 act on the clevis pin 48 connecting the actuator rod 22 and the play adjuster lever 34. Referring to FIG. Figure 3, and according to the present invention, an air chamber or cylinder 52 is attached to a mounting bracket 56 by means of a pivotal connection 54. The mounting bracket 56 is welded or otherwise attached to A vehicle axle 58. The force at the center of gravity of the air chamber 52 is indicated by the arrow 59. The mounting bracket may alternatively be connected to the vehicle other than the axle, including, but not in a limiting manner, by the vehicle chassis or suspension components. In addition, the support may alternatively be a trunnion, a pivoting support or a support clevis. Due to the pivotal connection 54, the air chamber 52 is free to pivot in response to the horizontal and vertical forces 60 and 62 acting on the distal end of the actuator rod 64 through the axis of rotation. clevis 66 when the actuator rod is extended out of the air chamber 52 or retracted therein and the game adjuster lever 68 is pivoted about the shaft 72. Accordingly, any time at (x ) mounting point (s) of the air chamber 30 on the mounting bracket is eliminated or minimized. This results in fewer stresses at the joint between the air chamber and the mounting bracket. A comparison of the prior art "fixed mounting" bracket 30 and the mounting bracket 56 in one embodiment of the invention is shown in FIGS. 4 and 5. As illustrated in FIG. 4, the mounting bracket of the prior art, indicated generally by 30, has a support core 74 which is fixed to the axle 32 and on which is provided a mounting plate having tabs 76a and 76b which have attachment apertures 78a and 78b . The fastening openings receive the bolts or studs to secure the air chamber to the mounting bracket. On the other hand, as illustrated in FIG. 5, the mounting support 56 comprises a support core 82 which is fixed to the axle 58 (or alternatively elsewhere on the vehicle). A pair of spaced lugs 84a and 84b having fastener openings are provided on the mounting bracket and, as explained in more detail below, are pivotally attached to the air chamber. With reference to FIGS. 6 and 7, a mounting bracket 90 of the prior art may be modified by means of an adapter support, indicated generally by 92, to enable an air chamber 52 to be mounted at pivoting on a vehicle. More particularly, the adapter support 92 has a pair of studs or bolts 94a and 94b which are mounted on a central plate 93 and received and secured within the mounting slots 96a and 96b of the prior art mounting bracket 90 , as by nuts or welding. In addition, the adapter holder 92 has a pair of pivotable mounting lugs 104a and 104b positioned on opposite sides of the central plate 93.
    [0006] The air chamber 52 includes a pair of mounting tabs 98a and 98b that have apertures 102a and 102b (shown in Figures 9A and 9B). The mounting tabs 98a and 98b of the air chamber are positioned within the pivotable mounting lugs 104a and 104b of the adapter holder 92, as shown in FIG. 6A, or adjacent the ears 84a and 84b of the 5, and pivotably secured in place with cotter pins and cotter pins 106a and 106b (FIGS. 8A and 8B) which pass through the openings 102a and 102b (FIG. 9, V) of the mounting tabs 98a and 98b of FIG. air chamber and the corresponding openings of the ears 84a and 84b (indicated in dotted lines 85a and 85b in Figure 5) or 104a and 104b (indicated by 105a for the ear 104a in Figure 6).
    [0007] The articulation of the pivoting air chamber and the game adjuster lever of Fig. 6 is illustrated in Figs. 8A and 8B. The position of the air chamber 52 adjusts to align with the actuator rod 64 as it is extended out of the air chamber 52 and retracted therein. More particularly, the actuator rod 64 is shown in FIG. 8A in a position where it is fully retracted within the air chamber 52. This corresponds to the non-actuated vehicle brakes. When in such a position, the actuator rod is at an angle to the horizontal. As a result, the air chamber 52 has been slightly inclined. When the vehicle brakes are actuated, the actuator rod 64 extends out of the air chamber 52 in the position shown in Figure 8B where it is generally horizontal. As a result, the air chamber pivots counter clockwise around the pins 106a and 106b (not shown), as indicated by the arrow 107 in FIG. 8A, so that it is aligned. on the extended actuator rod. When the vehicle brakes are released, and the actuator rod 64 retracts back into the air chamber 52, the air chamber 52 rotates clockwise around the pins 106a and 106b as indicated by arrow 109 in Fig. 8B, to return to the inclined position 15 shown in Fig. 8A. An embodiment of the air chamber of the invention is indicated generally by 108 in Figs. 9A and 9B. A large main compression spring 110 (also referred to as an emergency spring, parking spring, or mainspring) is positioned within an upper housing 111 and serves as a mechanical means to prevent the vehicle from rolling when not in use. There is no air in the braking system, and therefore no air in the upper cavity 112, and when the vehicle is stationary or stationary. This situation is illustrated in Fig. 8B, where the emergency spring 110 is shown to provide the parking force required to hold the vehicle stationary through the piston 113 pushing the actuator rod 114 so that the actuator rod extends out of the air chamber. A service compression spring 116 is positioned within a lower housing 118 of the air chamber and biases a piston 119 and the actuator rod 114 in a direction such that it retracts into the lower casing of the air chamber 108, as shown in Figure 9A. In other words, FIG. 9A illustrates the situation in which air is supplied to the pneumatic braking system, and thus to the air chamber 108, but the brakes of the vehicle have not been actuated by the air brake system. operator of the vehicle. When the vehicle operator operates the brakes, such as by depressing the brake pedal in the vehicle cab, the lower cavity 120 (Fig. 9B) fills with air and forces the piston 119 downwardly so that the rod actuator 114 extends from the air chamber to actuate the game adjuster and operate the vehicle brakes. The upper cavity 112 of the air chamber 108 is separated from the lower cavity by a separator plate 121 having a central opening through which the actuator rod 114. The central opening of the separator plate 121 is provided with a seal Accordingly, the air chamber 108 of Figures 9A and 9B does not require a diaphragm, and therefore the air chamber housing does not require the associated circumferential bead. This allows the air chambers in embodiments of the invention to have a smaller outer diameter than the air chambers of the prior art, as illustrated by a comparison of the air chamber 20 of the present invention. Figure 4 with the air chamber 52 of Figure 5. In an alternative embodiment of the air chamber, illustrated in Figure 10, the smaller outer diameter of the air chamber housing allows positioning. emergency spring 110 outside the upper housing 111 of the air chamber. Further, FIG. 10 illustrates that the top of the housing or upper body 111 of the air chamber can be adapted for the pivotal connection through the upper mounting cylinder 113 (instead of the mounting tabs 98a and 98b of the air chamber of FIGS. 9A and 9B). Other locations on the body of the air chamber may alternatively be used for the pivotal connection to a mounting bracket. By eliminating (or substantially reducing) the bending moment acting on the actuator rod, embodiments of the present invention allow the use of aluminum actuator rods. Steel is usually used in the actuator rods of the prior art because the steel has a much greater rigidity than aluminum. By pivoting the air chamber so as to align the actuating forces of the rod in accordance with embodiments of the present invention, less bending resistance is required for the actuator rod, so that aluminum can be used. Referring to FIG. 11, this provides an anodized colored strip 124 as a running indicator on the actuator rod 114. This is more durable and cleaner than the painted or type of stroke indicators. "Sticker" of the prior art and eliminates the soiling associated with the application of painted or adhesive markers. In addition, embodiments of the present invention keep the actuator rod clean, which makes it easy to see the anodized band of the stroke indicator. The aluminum material also saves weight. The embodiments of the pivoting air chamber described above have many advantages over the prior art. These include no moment (or minimal moment) around the mounting studs to reduce vibration damage, efficient and quick installation and removal, less weight, and a smaller footprint. air chamber, a more reliable force output (particularly useful for computerized braking systems), greater strength in a smaller air chamber envelope and the possibility of placing the emergency spring inside or outside. While the preferred embodiments of the invention have been shown and described, it will be apparent to those skilled in the art that changes and modifications can be made thereto without departing from the scope of this invention. invention, which is defined by the following claims.
    权利要求:
    Claims (20)
    [0001]
    REVENDICATIONS1. Pivoting air chamber for a vehicle braking system comprising: a. a mounting bracket adapted to be attached to the vehicle b. an air chamber housing pivotally mounted on the mounting bracket; vs. an actuator rod adapted to be connected to the vehicle braking system and extending from the air chamber housing and retracting therein when the actuator rod is actuated; and D. said air chamber housing is pivotable relative to the mounting bracket when the actuator rod is actuated.
    [0002]
    The pivoting air chamber according to claim 1, wherein the mounting bracket comprises a pair of pivoting mounting lugs and the air chamber has a pair of mounting lugs that are pivotally connected to the pair. pivoting mounting ears.
    [0003]
    The pivoting air chamber according to claim 1 or 2, wherein the air chamber comprises an emergency spring urging the actuator rod toward the extension from the air chamber and a spring of service that urges the actuator rod toward the shrinkage in the air chamber.
    [0004]
    The pivoting air chamber of claim 3, wherein the air chamber has a housing and the emergency spring is positioned within the housing.
    [0005]
    The pivoting air chamber according to claim 3, wherein the air chamber comprises a housing and the emergency spring is positioned outside the housing.
    [0006]
    The pivoting air chamber according to any of the preceding claims, wherein the actuator rod is constructed of aluminum.
    [0007]
    The pivoting air chamber of claim 6, wherein the actuator rod includes an anodized stroke indicator.
    [0008]
    The pivoting air chamber of claim 7, wherein the anodized stroke indicator is a colored strip.
    [0009]
    The pivoting air chamber according to any one of the preceding claims, wherein the mounting bracket includes an adapter support adapted to be attached to a vehicle-mounted support. 10
    [0010]
    The pivoting air chamber according to any one of claims 1 to 8, wherein the mounting bracket is adapted to be mounted on the axle of the vehicle. 15
    [0011]
    A pivoting air chamber as claimed in any one of the preceding claims, wherein the actuator rod is adapted to be attached to a game adjuster of the vehicle braking system.
    [0012]
    12. Air chamber for a vehicle braking system comprising: 20 a. a housing ; b. an actuator rod adapted to be connected to the braking system and extending from the air chamber housing and retracting therein when actuated; vs. said housing being adapted to be mounted on a support so that the air chamber pivots relative to the support.
    [0013]
    The air chamber of claim 12, further comprising a pair of mounting lugs attached to the housing, said mounting lugs being adapted to be pivotally mounted on the carrier.
    [0014]
    The air chamber of claim 13, wherein each of the pair of mounting tabs has a mounting hole. 25 30
    [0015]
    15. Air chamber according to claim 12, further comprising a mounting cylinder attached to the housing, said mounting cylinder being adapted to be pivotally mounted on the support.
    [0016]
    An air chamber according to any one of claims 12 to 15, wherein the air chamber comprises an emergency spring urging the actuator rod toward the extension from the air chamber and a service spring that urges the actuator rod toward the recess in the air chamber.
    [0017]
    17. Air chamber according to claim 16, wherein the air chamber comprises a housing, and the emergency spring is positioned inside the housing.
    [0018]
    18. Air chamber according to claim 16, wherein the air chamber comprises a housing and the emergency spring is positioned outside the housing.
    [0019]
    The pivoting air chamber of any one of claims 12 to 18, wherein the actuator rod is constructed of aluminum and has an anodized stroke indicator which is a colored strip.
    [0020]
    20. A method of mounting an air chamber for a braking mechanism on a vehicle, the air chamber having an actuator rod that is actuated to extend from the air chamber and retract in it, including the steps of: a. mounting a support on a vehicle; b. pivotally mounting the air chamber on the mounting bracket; and c. attachment of the actuator rod of the air chamber to the vehicle braking mechanism.
    类似技术:
    公开号 | 公开日 | 专利标题
    FR3017672A1|2015-08-21|
    EP1565666B1|2009-05-20|Drum brake and brake shoe for one such brake
    FR2633877A1|1990-01-12|WHEEL FOR MOTORIZED OR TRACED VEHICLE AND VEHICLE EQUIPPED WITH SUCH WHEEL
    FR2633227A1|1989-12-29|PIVOTING CENTRAL ARMREST FOR MOTOR VEHICLE SEAT
    CA2724879A1|2009-12-10|Purging device for assembled unit and method of deflating an assembled unit
    WO2013178896A1|2013-12-05|Hinging bearing assembly for an anti-roll bar
    FR2933920A1|2010-01-22|CABLE MOVABLE ALONG A PROFILE AND PAVILABLE BY PIVOTING AGAINST IT FOR EACH TIRE OF A ROAD VEHICLE CARRIED BY A TRANSPORT UNIT
    EP3089897B1|2018-02-07|Drum brake device suitable for including a parking brake that is conventional or that operates in duo servo mode
    WO2002068223A1|2002-09-06|Tyre, hoop and rim assembly
    FR3070370B1|2019-09-06|AIR TERMINAL AIR TERMINAL WITH REPORTED AXLE, AND ASSOCIATED ASSEMBLY METHODS
    FR2974326A1|2012-10-26|CONNECTION SYSTEM FOR FASTENING A CARRYING DEVICE
    EP0437413A1|1991-07-17|Removable unitary structure for securing and supporting a road vehicle by its wheels
    FR3067426A1|2018-12-14|DRUM BRAKE COMPRISING AN ELECTRIC DRIVE DEVICE OF AN IMPROVED MOUNTING PARKING BRAKE ACTUATOR
    EP0399882B1|1993-04-07|Method for mounting a hand brake on an automobile and system for use of this method
    FR3029162A1|2016-06-03|ARRANGEMENT FOR A MOTOR VEHICLE WITH AN ADJUSTABLE SPACER ARRANGED BETWEEN TWO STRUCTURAL ELEMENTS
    EP3307608B1|2019-08-07|Trailer comprising an immobilisation means, vehicle controlling the reversible immobilisation and coupling of the trailer, and assembly formed by the coupling of such a trailer and such a vehicle
    EP1657465B1|2014-01-15|Decoupling element to be interposed between a piston and a friction element of a disc brake
    FR2464861A1|1981-03-20|DEVICE FOR SELECTIVELY APPLYING SERVICE PRESSURE TO A BRAKE FOR SLOWING A VEHICLE WHEEL
    EP3962760A1|2022-03-09|Vehicle wheel wishbone, with articulation push-fitted onto a fixing rod via a bushing
    FR2990911A3|2013-11-29|Brake pedal for car, has support shoe, pivot element that is adapted to be mounted on complementary pivot element of car so as to allow shoe to rock around rotation axis, and end of arm fixed to pivot element or at end of another arm
    FR3096013A1|2020-11-20|MOTOR VEHICLE BRAKE ASSEMBLY INCLUDING BRAKE BRACKET, GEAR MOTOR AND GEAR MOTOR HOUSING ASSEMBLED WITH BRAKE BRACKET
    FR3110653A1|2021-11-26|Holding device for a drum brake for a road vehicle, in particular a motor vehicle
    JP2001260831A|2001-09-26|Braking device of trailer
    FR3067427A1|2018-12-14|MOUNTING ELEMENT ON A DRUM BRAKE PLATE OF A DRIVING DEVICE, PREFERABLY ELECTRICAL, AND A DRUM BRAKE COMPRISING AT LEAST ONE MOUNTING ELEMENT
    FR2867136A1|2005-09-09|EFFORT TRANSMISSION BY BALL
    同族专利:
    公开号 | 公开日
    GB201502359D0|2015-04-01|
    US20150232077A1|2015-08-20|
    DE102015202659A1|2015-08-20|
    GB2524876A|2015-10-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR1210320A|1958-09-18|1960-03-08|Trailer axle|
    US3882609A|1973-07-23|1975-05-13|James D Troutman|Telescopic sight mounting means|
    US4945818A|1989-01-12|1990-08-07|Lear Siegler Truck Products Corporation|Stroke indicator for air operated diaphragm spring brakes|
    US6238132B1|1999-08-24|2001-05-29|Indian Head Industries, Inc.|Push rod and plate assembly for brake actuators and method of forming same|
    US6606984B2|2001-05-01|2003-08-19|David Ross Mugg|Pneumatic time delayed bowstring release|
    US6776266B2|2002-12-12|2004-08-17|Veridian Engineering, Inc.|Smart digital brake stroke sensor|
    US7665750B2|2005-02-04|2010-02-23|Watson & Chalin Maufacturing, Inc.|Trunnion air ride suspension system|
    US9710978B1|2016-03-15|2017-07-18|Tyco Fire & Security Gmbh|Access control system using optical communication protocol|DE102014209502B4|2014-05-20|2020-12-10|Saf-Holland Gmbh|Carrier unit|
    WO2017156097A1|2016-03-09|2017-09-14|Hendrickson Usa, L.L.C.|Apparatus for mounting an air disc brake actuator|
    US10913439B2|2017-03-28|2021-02-09|Tse Brakes, Inc.|Vehicles and braking systems for vehicles having a spring brake actuator with replaceable push rod assembly|
    CN110843754B|2019-09-30|2020-10-09|安徽兰翔重工股份有限公司|Split type adjustable air chamber support|
    法律状态:
    2016-01-25| PLFP| Fee payment|Year of fee payment: 2 |
    2017-12-01| ST| Notification of lapse|Effective date: 20171031 |
    优先权:
    申请号 | 申请日 | 专利标题
    US201461939983P| true| 2014-02-14|2014-02-14|
    [返回顶部]