• 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:
    Docket No. D6757Cl8 of 18 ABSTRACT An automatically adjustable f1fth Wheel assembly for a vehicle and trailer combination that adjusts the position of the trailer relatiVe to the vehicle is disclosed. Page 18 of 18q:grothgthdocsdo ctempsbe~patent application text. 201 10 82212422 820 8 72 .doc
    公开号:SE1150830A1
    申请号:SE1150830
    申请日:2011-09-14
    公开日:2012-03-17
    发明作者:Rudolf Gruber；Mike Lehti
    申请人:Int Truck Intellectual Prop Co；
    IPC主号:
    专利说明:

    [2] [0002] The present disclosure relates to a moveable fifth wheel assembly for a vehicleand a control system for the same. More particularly, the disclosure relates to a f1fth wheelassembly for a vehicle that automatically adjusts the distance between a trailer and the vehicle under certain appropriate operating conditions.
    [3] [0003] Over the last several years vehicle manufacturers and vehicle operators haveworked to improve fuel efficiency of vehicles, so that vehicles may be less expensive tooperate and meet more stringent fuel economy regulations. In some heavy-duty vehicles,such as semi trucks, or tractor-trailers, a vehicle is used to pull a trailer that contains cargo,and the location where the trailer connects to the vehicle is often referred to as a f1fth wheel.One approach to improving fuel economy involves decreasing the distance between thevehicle and the trailer during certain operating conditions by moving the f1fth wheel.Positioning the trailer in closer proximity to the vehicle improves aerodynamics of thevehicle and trailer combination, thus increasing fuel economy of the vehicle. However, inother operating conditions, it may be a disadvantage to position the trailer close to thevehicle, such as during a tum, during rapid deceleration, during low speed operations, or ifthe trailer is loaded in a manner that positioning the trailer closer to the vehicle would violateaxle weight restrictions set by govemment regulations.
    [4] [0004] Therefore, a need exists for a system and method that is capable of automaticallypositioning a trailer relative to a vehicle by moving a fifth wheel assembly based upon operating conditions of the vehicle and trailer.
    [5] [0005] According to one embodiment, a latch mechanism assembly for a slidablyadjustable system comprises a latch body, a roller actuator assembly, an over-center piVot,and a rack. The latch body has a latching tooth portion is disposed at a first end of the latchbody and a crank opening formed in a second end of the latch body. The roller actuatorassembly is disposed at the first end of the latch body. The roller actuator assembly has anextended position and a retracted position. The over-center pivot is disposed within the crankopening. The over-center piVot has a crank portion and ground portion. The latch bodypiVots about the crank portion between a first latch position and second latch position. Thecrank portion rotates about the ground portion between a first crank position and a secondcrank position. The rotation of the crank portion about the ground portion to the secondcrank portion position allows the latch body to pivot about the crank portion to the secondlatch position. The rack has a plurality of rack teeth spaced a distance apart. The distancebetween each of the plurality of rack teeth is sized to receive the latching tooth. Positioningthe roller actuator to the extended position rotates the crank portion from the first crankposition to the second crank position.
    [6] [0006] According to another embodiment, a latch pair assembly for a slidably adjustablesystem comprises a first latch mechanism, a second latch mechanism, and a rack. The firstlatch mechanism comprises a first latch body, a first roller actuator, and a first over-centerpiVot. The first latch body has a first latching tooth portion disposed at a first end of the firstlatch body and a first crank opening formed in a second end of the first latch body. The firstroller actuator assembly is disposed at the first end of the first latch body. The first rolleractuator assembly has an extended position and a retracted position. The first over-centerpiVot is disposed within the first crank opening. The first over-center piVot has a first crankportion and a first ground portion. The first latch body piVots about the first crank portionbetween a first latch position and second latch position. The first crank portion rotates aboutthe first ground portion between a first crank position and a second crank position. Therotation of the first crank portion about the first ground portion to the second crank positionallows the first latch body to piVot about the first crank portion to the second latch position.The second latch mechanism comprises a second latch body, a second roller actuator, and asecond over-center pivot. The second latch body has a second latching tooth portiondisposed at a first end of the second latch body and a second crank opening formed in a second end of the second latch body. The second roller actuator assembly is disposed at the Page 2 of 18q:grothgthdocsdo ctempsbe~patent applíc ation text. 201 10 82212422 820 8 72 .doc Docket No. D6757C3 of l8 first end of the second latch body. The second roller actuator assembly has an extendedposition and a retracted position. The second over-center pivot is disposed within the firstcrank opening. The second over-center pivot has a second crank portion and a second groundportion. The second latch body pivots about the second crank portion between a first latchposition and a second latch position. The second crank portion rotates about the secondground portion between a first crank position and a second crank position. The rotation ofthe second crank portion about the second ground portion to the second crank position allowsthe second latch body to pivot about the second crank portion to the second latch position.The rack has a plurality of rack teeth spaced a distance apart. The distance between each ofthe plurality of rack teeth is sized to receive the first latching tooth portion of the first latchmechanism and the second latching tooth portion of the second latch mechanism. Positioningthe first roller actuator assembly in the extended position allows slidable movement in a firstlongitudinal direction. Positioning the second roller actuator assembly in the extendedposition allows slidable movement in a second longitudinal direction.
    [7] [0007] According to a further embodiment, a slidably adjustable fifth wheel hitchassembly comprises a fifth wheel hitch, a first rack, a second rack, a first latch mechanism, asecond latch mechanism, a third latch mechanism, and a fourth latch mechanism. The fifthwheel hitch has a first position and a second position along a longitudinal axis. The first rackhas a first plurality of rack teeth. The first rack is disposed on a first lateral side of the fifthwheel hitch. The second rack has a second plurality of rack teeth. The second rack isdisposed on a second lateral side of the fifth wheel hitch. The first latch mechanism isdisposed on the first lateral side of the fifth wheel hitch. The first latch mechanism has alatched position and an unlatched position. The second latch mechanism is disposed on thefirst lateral side of the fifth wheel hitch. The second latch mechanism being disposedrearward of the first latch mechanism. The second latch mechanism has a latched positionand an unlatched position. The third latch mechanism is disposed on the second lateral sideof the fifth wheel hitch. The third latch mechanism has a latched position and an unlatchedposition. The fourth latch mechanism is disposed on the second lateral side of the fifth wheelhitch. The fourth latch mechanism is disposed rearward of the third latch mechanism. Thefourth latch mechanism has a latched position and an unlatched position. The first latchmechanism and the third latch mechanism are positioned in the unlatched position as the fifth wheel hitch moves from the first position to the second position.
    [8] [0008] FIG. 1 is a perspective view of a vehicle having a slidably adjustable f1fth wheelhitch assembly in a first position with an attached trailer;
    [9] [0009] FIG. 2 is a perspective view of a vehicle having a movable fifth wheel assemblyof FIG. 1 in a second position with an attached trailer;
    [10] [0010] FIG. 3 is a detailed perspective view of the f1fth wheel assembly of FIG. 1;[0011] FIG. 4 is side view of a latch mechanism of an adjustable f1fth wheel assemblyaccording to one embodiment; and
    [12] [0012] FIGs. 5a and 5b are detailed views of an over-center pivot for a latch mechanism;[0013] FIG. 6 is side view of a latch pair assembly in a latched position according to oneembodiment;
    [14] [0014] FIG. 7 is a side view of a latch pair assembly in an unlatched position according toone embodiment;
    [15] [0015] FIG. 8 is a side view of a latch pair assembly in an unlatched position according toanother embodiment;
    [16] [0016] FIG. 9 is a sectional view of a latch mechanism according to one embodiment;[0017] FIG. 10 is a perspective view of a cylinder mount assembly for a slidablyadjustable f1fth wheel hitch assembly according to one embodiment;
    [18] [0018] FIG. 11 is a block diagram showing a method moving a slidably adjustable f1fthwheel hitch assembly;
    [19] [0019] FIG. 12 is a block diagram showing a first sub-method of the method of FIG. 11;[0020] FIG. 13 is a block diagram showing a second sub-method of the method of FIG.11; and
    [21] [0021] FIG. 14 is a perspective view of an electrical and control system of a vehicle having a slidably adjustable f1fth wheel hitch assembly according to one embodiment.
    [22] [0022] FIG. 1 shows a vehicle and trailer combination 10 having a vehicle 12 and a trailer14. The vehicle has a slidably adjustable f1fth wheel hitch assembly 16. As shown in FIG. 1,the slidably adjustable f1fth wheel hitch assembly 16 is disposed in a first position. In thefirst position, the trailer 14 is separated from the vehicle 12 a distance A. The distance A is suff1cient to allow the vehicle 12 to tum without contacting the trailer 14.
    [23] [0023] FIG. 2 shows the vehicle and trailer combination 10 of FIG. 1, with the slidablyadjustable fifth wheel hitch assembly 16 disposed in a second position. In the secondposition, the trailer 14 is separated from the vehicle 12 by a distance B. The distance B isless than the distance A of FIG. 1. In the second position with the trailer 14 closer to thevehicle 12, the aerodynamics of the vehicle and trailer combination 10 is improved. Theimproved aerodynamics of the vehicle and trailer combination 10 reduce the fuelconsumption of the vehicle and trailer combination 10. The distance B between the vehicle12 and the trailer 14 limit the allowable movement between the vehicle 12 and the trailer 14,such that some tums require that the trailer 14 be moved away from the vehicle 12 to preventcontact between the vehicle 12 and the trailer 14.
    [24] [0024] FIG. 3 depicts a detailed perspective view of the slidably adjustable fifth wheelhitch assembly 16. The slidably adjustable fifth wheel hitch assembly 16 has a fifth wheelhitch member 18 adapted to receive a pin from the trailer 14 in order to attach the trailer 14 tothe vehicle 12. The fifth wheel hitch member 18 has a plurality of latch mechanismassemblies 20a-20d that releasably attach the fifth wheel hitch member 18 to a first rack 22aand a second rack 22b. As shown in FIG. 3, a first latch mechanism assembly 20a and asecond latch mechanism assembly 20b releasably attach the fifth wheel hitch member 18 tothe first rack 22a, while a third latch mechanism assembly 20c and fourth latch mechanismassembly 20d releasably attach the fifth wheel hitch member 18 to the second rack 22b.[0025] A fifth wheel actuator, such as a hydraulic cylinder 24, is provided to adjust theslidably adjustable fifth wheel hitch assembly 16 in a direction generally parallel to alongitudinal axis of the vehicle 12. It is additionally contemplated that the fifth wheelactuator may be a pneumatic actuator, an electric motor, an electromagnetic device, a chaindriven actuator, a pulley system, or other known actuator types, not just a hydraulic cylinder24. The hydraulic cylinder 24 moves the slidably adjustable fifth wheel hitch assembly 16when at least some of the plurality of latch mechanisms 20a-20d are released from the firstand second racks 22a, 22b.
    [26] [0026] The hydraulic cylinder 24 attaches via a cylinder mount assembly 28 to a firstframe cross member 30 that connects to a first frame rail 34a and a second frame rail 34b, asis additionally shown in FIG. 10. The cylinder mount assembly 28 is adapted to movelaterally along the first frame cross member 30, such that additional torsional stress is notdelivered to a first frame rail 34a and a second frame rail 34b of the vehicle 12 by the slidablyadjustable fifth wheel hitch assembly 16.
    [27] [0027] The cylinder mount assembly 28 is constrained from movement in a longitudinaldirection relative to the first frame cross member 30 by a first longitudinal support 26a and asecond longitudinal support 26b. The first longitudinal support 26a and the secondlongitudinal support 26b connect the cylinder mount assembly 28 to a second frame crossmember 32. The first frame cross member 30 connects to the first frame rail 34a and thesecond frame rail 34b. The second frame cross member 32 additionally connects to the firstframe rail 34a and the second frame rail 34b. The first longitudinal support 26a and thesecond longitudinal support 26b distribute a longitudinal load placed on the cylinder mountassembly 28 to the second frame cross member 32. The first longitudinal support 26aconnects to the second frame cross member 32 near the first frame rail 34a. The secondlongitudinal support 26b connects to the second frame cross member 32 near the secondframe rail 34b. Therefore, the first and second longitudinal supports 26a, 26b distributelongitudinal loads from the hydraulic cylinder 24 to frame rails 34a, 34b of the vehicle 12,avoiding a concentration of stress along the first frame cross member 30.
    [28] [0028] Tuming now to FIG. 4, the first latch mechanism assembly 20a is shown ingreater detail. The second, third and fourth latch mechanism assemblies 20b-20d functionsimilarly to the first latch mechanism 20a. While the first latch mechanism assembly 20a isdescribed in use with the slidably adjustable fifth wheel hitch assembly 16, it is additionallycontemplated that the first latch mechanism assembly 20a may be utilized with other systemsfor moving equipment along an axis.
    [29] [0029] The first latch mechanism assembly 20a has a latch body 42 and is removablyconnected to the first rack 22a by a latching tooth portion 43 that interacts with a plurality ofrack teeth 48. A locking space 50 is formed between each of the rack teeth 48, such that thelatching tooth portion 43 is disposed within the locking space 50 when the latch mechanism20a is engaged. The latching tooth portion 43 of the latch body 42 is disposed at a first endof the latch body 42.
    [30] [0030] The latch body 42 additionally has a crank opening 45 formed within the latchbody 42. The crank opening 45 is disposed at a second end of the latch body 42. An over-center pivot 36 is disposed within the crank opening 45 of the of latch body 42. The latchbody 42 is adapted to pivot about the over-center pivot 36. The over-center pivot 36comprises a crank portion 36a and a ground portion 36b. The crank portion 36a pivots aboutthe ground portion 36b to allow the latch body 42 to pivot about the over-center pivot 36.
    [31] [0031] As shown in FIG. 5a and FIG. 5b, the crank portion 36a rotates in the direction ofarrow A about the ground portion 36b in order to lock the over-center pivot 36 and preventthe latch body 42 from pivoting about the over-center pivot 36. However, when the crankportion 36a has pivoted about the ground portion 36b as shown in FIG. 5b, the latch body 42may rotate about the over-center pivot 36.
    [32] [0032] Turning to FIG. 4 and FIGs.6-8, a roller actuator assembly 44 is disposed the firstend of the latch body 42. The roller actuator assembly 44 has a wheel 47. The wheel 47 issized to be partially disposed within the locking space 50. The roller actuator assembly 44 ishydraulically operated to position the roller actuator assembly 44 between an extendedposition, as shown in FIG. 7, and a retracted position, as shown in FIG. 6. The movement ofthe roller actuator assembly 44 to the extended position causes the crank portion 36a to rotateabout the ground portion 36b of the over-center pivot 36 to allow the latch body 42 to rotateabout the over-center pivot 36. Once the roller actuator assembly 44 is in the extendedposition, the latching tooth portion 43 of the latch mechanism 20a-20d is removed from thelocking space 50, and the slidably adjustable fifth wheel hitch assembly l6 may be movedlongitudinally.
    [33] [0033] As the roller actuator assembly 44 is extended, the latching tooth portion 43moves up and out of the locking space 50 as the latch body 42 pivots about the over-centerpivot 36. The roller actuator assembly 44 is disposed in the locking space 50 adjacent thelocking space 50 containing latching tooth portion 43. The latching tooth portion 43 maycontact one of the rack teeth 48 as the latching tooth portion 43 moves out of the lockingspace 50. The latching tooth portion 43 and the roller actuator assembly 44 are designed toprevent contact between a tip of the latching tooth portion 43 and tips of the rack teeth 48 tolimit stress between the latching tooth portion 43 and the rack teeth 48. Once the rolleractuator assembly 44 has moved to an adj acent locking space 50, the roller actuator assembly44 may retract, and the latching tooth portion 43 reengages with an adjacent locking space50.
    [34] [0034] As shown in FIGs. 6-8, the third latch mechanism assembly 20c and the fourthlatch mechanism assembly 20d are shown forrning a latch pair assembly l20. As shown inFIG. 6, the roller actuator assembly 44d of the fourth latch mechanism assembly 20d and theroller actuator assembly 44c of the third latch mechanism assembly 20c are in the retracted position.
    [35] [0035] As shown in FIG. 7, the roller actuator assembly 44d of the fourth latchmechanism assembly 20d and the roller actuator assembly 44c of the third latch mechanismassembly 20c are in the extended position. Once the roller actuator 44d of the fourth latchmechanism assembly 20d is in the extended position, the latch pair assembly 120 may bemoved in the direction of arrow B.
    [36] [0036] As shown in FIG. 8, the roller actuator assembly 44d of the fourth latchmechanism assembly 20d is in the extended position, while the roller actuator assembly 44cof the third latch mechanism assembly 20c is in the retracted position. Similarly, once theroller actuator 44d of the fourth latch mechanism assembly 20d is in the extended position,the latch pair assembly 120 may be moved in the direction of arrow B.
    [37] [0037] As shown in FIGs. 7 and 8, only the roller actuator assembly 44d of the fourthlatch mechanism assembly 20d is required to be placed into the extended position to allowthe latch pair assembly 120 to move in the direction of arrow B. Conversely, only the rolleractuator assembly 44c of the third latch mechanism assembly 20c is required to be placedinto the extended position to allow the latch pair assembly 120 to move in an oppositedirection of arrow B. This is because the shape of the rack teeth 48 form a generally concavesurface, such that latching tooth portion 43 of the latch mechanism assemblies 20a-20d maycam out of the locking space 50 in one longitudinal direction, but will remain within thelocking space in the other longitudinal direction. Therefore, the use of a latch pair assembly120 prevents movement of the slidably adjustable f1fth wheel hitch assembly 16 in alongitudinal direction unless at least one of the roller actuator assemblies 44c, 44d is in theextended position.
    [38] [0038] Tuming back to FIG. 4, the first latch mechanism assembly 20a additionallycomprises a latch valve assembly that comprises a hydraulic valve 37a disposed at the secondend of the latch body 42 that is connected to a cam follower 40 that follows a cam surface 38.The hydraulic valve 37a has an open position and a closed position. The hydraulic valve 37acontrols flow of hydraulic fluid to the roller actuator assembly 44. As the cam follower 40moves along the cam surface 38, the hydraulic valve 37a closes, cutting off the flow ofhydraulic fluid to the roller actuator assembly 44. As the roller actuator assembly 44areaches the next locking space 50, the latching tooth portion 43 of the latch body 42 isretumed to an adj acent locking space 50 to prevent additional movement of the slidablyadjustable f1fth wheel hitch assembly 16, unless the roller actuator assembly 44 is reactivated.
    [39] [0039] A biasing member 46 is provided to bias the latch mechanism assembly 20atowards a latched position. As shown, the biasing member 46 is a spring, however, it iscontemplated that an elastomeric biasing member may be utilized. Should a hydraulic failureoccur with the roller 44 extended, the biasing member 46 will bias the latching tooth portion43 of the latch mechanism assembly 20a towards an engaged position, such that the latchingtooth portion 43 will reenter a locking space 50, securing the latch mechanism 20a.
    [40] [0040] FIG. 14 shows an electrical and control system 300 for a vehicle having a slidablyadjustable fifth wheel hitch assembly 16 according to one embodiment. The electrical andcontrol system comprises a controller 302 that is in communication with a plurality of sensorsto monitor and control operation of the slidably adjustable fifth wheel hitch assembly 16.
    [41] [0041] A first rear cab sensor 312 and a second rear cab sensor 314 are additionallyprovided. The first rear cab sensor 312 and the second rear cab sensor 314 determine adistance between a vehicle and a trailer, such as the distance between the rear of a vehicle caband a front surface of the trailer. The controller 302 may additionally utilize a difference inthe distance between the vehicle and the trailer indicated by the first rear cab sensor 312 andthe second rear cab sensor 314 to determine an articulation angle of the trailer relative to thetruck as well as a yaw rate of the trailer.
    [42] [0042] A plurality of sensors are provided near the slidably adjustable fifth wheel hitchassembly 16 including a first slidably adjustable fifth wheel hitch assembly position andstatus sensor 316 and a second slidably adjustable fifth wheel hitch assembly position andstatus sensor 318. The first fifth wheel hitch assembly position and status sensor 316monitors whether a first pair of latch mechanisms are in a latched or released state andmonitors the longitudinal position of the fifth wheel hitch assembly 16. Similarly, the second fifth wheel hitch assembly position and status sensor 318 monitors whether a second pair of Page 9 of 18q:grothgthdocsdo ctempsbe~patent applíc ation text. 201 10 82212422 820 8 72 .doc Docket No. D6757C10 of 18 latch mechanisms are in a latched or released state and monitors the longitudinal position ofthe fifth wheel hitch assembly. The controller 302 thus may control an actuator, such as ahydraulic cylinder, to move the slidably adjustable fifth wheel hitch assembly 16.
    [43] [0043] A first axle load sensor 324 and a second axle load sensor 326 are additionallyprovided. The first axle load sensor 324 monitors a load on a first rear axle of the vehicle,while the second axle load sensor 326 monitors a load on a second rear axle of the vehicle.The controller 302 monitors the load on the first rear axle and the second rear axle to ensurethat the vehicle does not exceed an axle weight limit in place where the vehicle is operating.[0044] A first rear vehicle sensor 320 and a second rear vehicle sensor 322 areadditionally provided. The first rear vehicle sensor 320 and the second rear vehicle sensor322 additionally determine a distance between the vehicle and the trailer, such as the distancebetween the rear of the vehicle and an undercarriage of the trailer. The controller 302 mayadditionally utilize a difference in the distance between the vehicle and the trailer indicatedby the first rear vehicle sensor 320 and the second rear vehicle sensor 322 to determine anarticulation angle of the trailer relative to the truck as well as a yaw rate of the trailer. Thearticulation angle and yaw rate based upon the rear vehicle sensors 320, 322 may becompared by the controller 302 to the articulation angle and the yaw rate based upon the rearcab sensors 312, 314 to serve as a additionally parameter the controller utilizes to control theactuator to move the slidably adjustable fifth wheel hitch assembly 16.
    [45] [0045] While sensors deterrnining the distance between the vehicle and the trailer havebeen described as being disposed on the vehicle, it is additionally contemplated that sensorsmay be located on the trailer to determine the distance between the vehicle and the trailer andthe articulation angle and yaw rates of the trailer. It is further contemplated that sensors maybe found on both the vehicle and the trailer to determine the distance between the vehicle andthe trailer and the articulation angle and yaw rates of the trailer.
    [46] [0046] Tuming now to FIG. 11, a method 200 of controlling a slidably adjustable fifthwheel hitch assembly 16 is depicted. As shown at block 202, the method deterrnines if allsensors are functioning. A decision block 204 directs the slidably adjustable fifth wheel hitchassembly 16 to a push back position block 206, i. e., away from a vehicle front, if not all ofthe sensors are functioning. However, if all sensors are functioning, the method progresses toblock 208 to determine if the vehicle speed is more than a first predeterrnined speed and hasbeen for a first preset time period, such as 45 miles per hour for a 5 minute time period. A decision block 210 directs the slidably adjustable fifth wheel hitch assembly to a pull forward Page 10 of 18q:grothgthdocsdo ctempsbe~patent applíc ation text. 201 10 82212422 820 8 72 .doc Docket No. D6757C11 of 18 position block 212, i. e., towards a vehicle front, if the vehicle is traveling at a speed above thefirst predeterrnined speed for the first preset time period. If the vehicle speed does not satisfythe first predeterrnined conditions, the decision block 210 moves the method to block 214,where it is deterrnined if the vehicle speed is below a second predeterrnined speed for asecond preset time period, or if the brakes are being applied. A decision block 216deterrnines if the conditions of the second predeterrnined speed and preset time period aremet, or if the vehicle°s brakes are being applied, the method again enters the push backposition block 206. However, if the decision block 216 does not meet the conditions of block214, the method deterrnines if trailer movement exceeds preset ranges 218. At decision block220, push back block 206 is selected if the trailer movement exceeds preset ranges, while themethod retums to block 202 if the trailer movement does not exceed preset ranges.
    [47] [0047] Tuming now to FIG. 12, push back position block 206 is shown. The method 206confirrns that the slidably adjustable f1fth wheel hitch assembly 16 is in at least a partiallyretracted position at block 222. The method unlatches the latch mechanisms 20a-20d at block224. The method moves the slidably adjustable f1fth wheel hitch assembly forward for ashort predeterrnined period of time at block 226. The method then moves the slidablyadjustable f1fth wheel hitch assembly 16 backward at block 228. At block 230, the methoddeterrnines if the slidably adjustable f1fth wheel hitch assembly 16 is at a fully extendedposition. A decision block 232 reengages the latch mechanisms 20a-20d if the slidablyadjustable f1fth wheel hitch assembly 16 is fully extended. If the slidably adjustable f1fthwheel hitch assembly 16 is not fully extended, the method deterrnines if a predeterrninedperiod of time has been exceeded during the movement of slidably adjustable f1fth wheelhitch assembly 16. A decision block 240 generates an error condition at block 238 if thepredeterrnined period of time has been exceeded, or retums to block 228 to continue to movethe slidably adjustable f1fth wheel hitch assembly backward.
    [48] [0048] Tuming to FIG. 13, pull forward position block 212 is depicted. The method 212confirrns that the slidably adjustable f1fth wheel hitch assembly 16 is in an extended positionat block 242. The method unlatches the latch mechanisms 20a-20d at block 244. Themethod moves the slidably adjustable f1fth wheel hitch assembly 16 backward for a shortpredeterrnined time at block 246. The method then moves the slidably adjustable f1fth wheelhitch assembly 16 forward at block 248. The method deterrnines if the trailer is within apredeterrnined distance of the cab at block 250. A decision block 252 reengages the latch mechanisms 20a-20d if the trailer is within the predeterrnined distance of the cab. If the Page 1 1 of 18q:grothgthdocsdo ctempsbe~patent applíc ation text. 201 10 82212422 820 8 72 .doc Docket No. D6757C12 of 18 trailer is not within the predeterrnined distance of the cab, the method deterrnines if an axialload of the vehicle exceeds a predeterrnined threshold at block 256. A decision block 258reengages the latch mechanisms 20a-20d if the axial load of the vehicle exceeds thepredeterrnined threshold. If the axial load of the vehicle does not exceed the predeterrninedthreshold, the method deterrnines if a predeterrnined period of time has been exceeded atblock 262. A decision block 264 generates an error condition at block 266 if thepredeterrnined time has been exceeded, or returns to block 248.
    [49] [0049] It will be understood that a control system may be implemented in hardware toeffectuate the method. The control system can be implemented with any or a combination ofthe following technologies, which are each well known in the art: a discrete logic circuit(s)having logic gates for implementing logic functions upon data signals, an application specificintegrated circuit (ASIC) having appropriate combinational logic gates, a programmable gatearray(s) (PGA), a field programmable gate array (FPGA), etc.
    [50] [0050] When the control system is implemented in software, it should be noted that thecontrol system can be stored on any computer readable medium for use by or in connectionwith any computer related system or method. In the context of this document, a “computer-readable medium” can be any medium that can store, communicate, propagate, or transportthe program for use by or in connection with the instruction execution system, apparatus, ordevice. The computer readable medium can be, for example, but is not limited to, anelectronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus,device, or propagation medium. More specific examples (a non-exhaustive list) of thecomputer-readable medium would include the following: an electrical connection (electronic)having one or more wires, a portable computer diskette (magnetic), a random access memory(RAM) (electronic), a read-only memory (ROM) (electronic), an erasable programmableread-only memory (EPROM, EEPROM, or Flash memory) (electronic), an optical fiber(optical), and a portable compact disc read-only memory (CDROM) (optical). The controlsystem can be embodied in any computer-readable medium for use by or in connection withan instruction execution system, apparatus, or device, such as a computer-based system,processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions.
    Page 12 of 18q:grothgthdocsdo ctempsbe~patent applíc ation text. 201 10 82212422 820 8 72 .doc
    权利要求:
    Claims (20)
    [1] 1. What is claimed is:l. A latch mechanism assembly for a slidably adjustable system comprising: a latch body having a latching tooth portion disposed at a first end of the latch bodyand a crank opening formed in a second end of the latch body; an over-center pivot disposed in the crank opening, the over-center pivot having acrank portion and ground portion, wherein the latch body pivots about the crank portionbetween a first latch position and second latch position, and wherein the crank portion rotatesabout the ground portion between a first crank position and a second crank position, therotation of the crank portion about the ground portion to the second crank portion positionallows the latch body to pivot about the crank portion to the second latch position; a rack having a plurality of rack teeth spaced a distance apart, the distance betweeneach of the plurality of rack teeth being sized to receive the latching tooth; and a roller actuator assembly disposed at the first end of the latch body; the rolleractuator assembly having an extended position and a retracted position, wherein when theroller actuator is in the extended position the crank portion rotates from the first crank position to the second crank position.
    [2] 2. The latch mechanism of claim 1, further comprising a wheel disposed at a distal end of the roller actuator assembly and in contact with the rack.
    [3] 3. The latch mechanism of claim 1, wherein the wheel is sized to be at least partially disposed within the distance formed between the plurality of rack teeth.
    [4] 4. The latch mechanism claim 1, wherein the latching tooth portion has a complimentary shape to an opening formed in between the plurality of rack teeth.
    [5] 5. The latch mechanism of claim 1, wherein the roller actuator assembly is hydraulically operated. Page 13 of 18q:grothgthdocsdo ctempsbe~patent applíc atíon text. 201 10 82212422 820 8 72 .doc Docket No. D6757C 14 of 18
    [6] 6. The latch mechanism of claim 5, further comprising a latch valve assemblycomprising: a hydraulic valve disposed on the second end of the latch body, the hydraulic valvehaving an open position and a closed position, the hydraulic valve being coupled to a camfollower, and the hydraulic valve being disposed in fluid communication with the rolleractuator assembly, wherein the hydraulic valve controls a flow of hydraulic fluid to the rolleractuator assembly to position the roller actuator assembly between the extended position andthe retracted position.; and a cam surface in contact with the cam follower of the hydraulic valve.
    [7] 7. The latch mechanism of claim 1, further comprising a biasing member coupled to the latch body to rotate the latch body towards the first latch position.
    [8] 8. The latch mechanism of claim 1, wherein the rack teeth form a generally concavesurface.
    [9] 9. A latch pair assembly for a slidably adjustable system comprising: a first latch mechanism comprising: a first latch body having a first latching tooth portion disposed at a first end ofthe first latch body and a first crank opening formed in a second end of the first latch body; a first roller actuator assembly disposed at the first end of the first latch body,the first roller actuator assembly having an extended position and a retracted position; and a first over-center pivot disposed in the first crank opening, the first over-center pivot having a first crank portion and a first ground portion, wherein the first latchbody pivots about the first crank portion between a first latch position and second latchposition, and wherein the first crank portion rotates about the first ground portion between afirst crank position and a second crank position, the rotation of the first crank portion aboutthe first ground portion to the second crank portion position allowing the first latch body topivot about the first crank portion to the second latch position; a second latch mechanism comprising: a second latch body having a second latching tooth portion disposed at a first end of the second latch body and a second crank opening formed in a second end of the second latch body; Page 14 of 18q:grothgthdocsdo ctempsbe~patent applíc ation text. 201 10 82212422 820 8 72 .doc Docket No. D6757C15 of l8a second roller actuator assembly disposed at the first end of the second latchbody, the second roller actuator assembly having an extended position and a retractedposition; anda second over-center pivot disposed in the second crank opening, the secondover-center pivot having a second crank portion and a second ground portion, wherein thesecond latch body pivots about the second crank portion between a first latch position and asecond latch position, and wherein the second crank portion rotates about the second groundportion between a first crank position and a second crank position, the rotation of the secondcrank portion about the second ground portion to the second crank portion position allowingthe second latch body to pivot about the second crank portion to the second latch position;anda rack having a plurality of rack teeth spaced a distance apart, the distance betweeneach of the plurality of rack teeth forrning an opening sized to receive the first latching toothportion of the first latch mechanism and the second latching tooth portion of the second latchmechanism;wherein the first roller actuator assembly in the extended position allows slidablemovement in a first longitudinal direction; andwherein the second roller actuator assembly in the extended position allows slidable movement in a second longitudinal direction.
    [10] l0. The latch pair assembly of claim 9, further comprising a first wheel disposed at a distal end of the first roller actuator assembly and in contact with the rack.
    [11] ll. The latch pair assembly for a slidably adjustable system of claim l0, furthercomprising a second wheel disposed at a distal end of the second roller actuator assembly and in contact with the rack.
    [12] l2. The latch pair assembly of claim 9, further comprising a first latch valve assemblycomprising: a first hydraulic valve disposed on the second end of the first latch body, the firsthydraulic valve having an open position and a closed position, the first hydraulic valve beingcoupled to a first cam follower, and the first hydraulic valve being disposed in fluid communication with the first roller actuator assembly, wherein the first hydraulic valve Page 15 of 18q:grothgthdocsdo ctempsbe~patent application text. 20l l0 822 l 2422 820 8 72 .doc Docket No. D6757C 16 of 18controls a flow of hydraulic fluid to the first roller actuator assembly to position the firstroller actuator assembly between the extended position and the retracted position; and a first cam surface in contact with the first cam follower of the first hydraulic Valve.
    [13] 13. The latch pair assembly for a slidably adjustable system of claim 12, furthercomprising a second latch Valve assembly comprising: a second hydraulic Valve disposed on the second end of the second latch body, thesecond hydraulic Valve having an open position and a closed position, the second hydraulicValve being coupled to a second cam follower, and the second hydraulic Valve being disposedin fluid communication with the second roller actuator assembly, wherein the secondhydraulic Valve controls a flow of hydraulic fluid to the second roller actuator assembly toposition the second roller actuator assembly between the extended position and the retractedposition; and a second cam surface in contact with the second cam follower of the second hydraulic Valve.
    [14] 14. The latch pair assembly for a slidably adjustable system of claim 9, wherein the firstlatching tooth portion has a complimentary shape to the opening formed between the plurality of rack teeth.
    [15] 15. The latch pair assembly for a slidably adjustable system of claim 14, wherein thesecond latching tooth portion has a complimentary shape to the opening formed between the plurality of rack teeth.
    [16] 16. The latch pair assembly for a slidably adjustable system of claim 9, wherein the rack teeth form a generally concave surface.
    [17] 17. The latch pair assembly for a slidably adjustable system of claim 9, whereinpositioning the second roller actuator assembly in the retracted position allows slidable movement in the first longitudinal direction. Page 16 of 18q:grothgthdocsdo ctempsbe~patent applíc ation text. 201 10 82212422 820 8 72 .doc Docket No. D6757C 17 of 18
    [18] 18. The latch pair assembly for a slidably adjustable system of claim 9, Whereinpositioning the first roller actuator assembly in the retracted position allows slidable movement in the second longitudinal direction.
    [19] 19. A slidably adjustable fifth Wheel hitch assembly comprising: a fifth Wheel hitch having a first position and a second position along a longitudinalaxis; a first rack having a first plurality of rack teeth disposed on a first lateral side of thefifth Wheel hitch; a second rack having a second plurality of rack teeth disposed on a second lateral sideof the fifth Wheel hitch; a first latch mechanism being disposed on the first lateral side of the fifth Wheel hitch,the first latch mechanism having a latched position and an unlatched position; a second latch mechanism being disposed on the first lateral side of the fifth Wheelhitch, the second latch mechanism being disposed rearWard of the first latch mechanism, thesecond latch mechanism having a latched position and an unlatched position; a third latch mechanism being disposed on the second lateral side of the fifth Wheelhitch, the third latch mechanism having a latched position and an unlatched position; and a fourth latch mechanism being disposed on the second lateral side of the fifth Wheelhitch, the fourth latch mechanism being disposed rearWard of the third latch mechanism, thefourth latch mechanism having a latched position and an unlatched position; Wherein the first latch mechanism and the third latch mechanism being positioned inthe unlatched position as the fifth Wheel hitch moves from the first position to the second position.
    [20] 20. The slidably adjustable fifth Wheel hitch assembly of claim 19, Wherein the secondlatch mechanism and the fourth latch mechanism being positioned in the unlatched position as the fifth Wheel hitch moves from the second position to the first position. Page 17 of 18q:grothgthdocsdo ctempsbe~patent applíc atíon text. 201 10 82212422 820 8 72 .doc
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    同族专利:
    公开号 | 公开日
    ZA201105790B|2012-04-25|
    US20110068557A1|2011-03-24|
    DE102011053160A1|2012-03-22|
    DE102011053160B4|2013-01-31|
    BRPI1104924A2|2013-03-26|
    DE102011053305A1|2012-03-22|
    US8333399B2|2012-12-18|
    US20110156368A1|2011-06-30|
    CN102407888A|2012-04-11|
    US20110071736A1|2011-03-24|
    US8348297B2|2013-01-08|
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    法律状态:
    2013-03-19| NAV| Patent application has lapsed|
    优先权:
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    US24447209P| true| 2009-09-22|2009-09-22|
    US12/883,663|US8348297B2|2009-09-22|2010-09-16|Slidably adjustable fifth wheel hitch assembly for a vehicle and control system for the same|
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