MXPA99009359A - Door system for trans vehicles - Google Patents

Abstract

The present invention relates to an operator for a door system for a mass transit vehicle having a pair of doors separated in two, said operator comprising: (a) a base for attachment to such a mass transit vehicle; (b) a source of motive power, (c) a transmission connected to said source of motive energy to receive the energy coming from it, said transmission having a transmission shaft of output of the transmission, (d) joining at least one of said source of driving energy and said transmission to said base; (e) a balancing plate, including said rolling plate; (i) a portion engaging the shaft to engage said output shaft of the transmission and (ii) a terminal portion; (f) a thrust bearing in mechanical contact with said terminal portion of said balancing plate; (g) a spring in mechanical contact with said thrust bearing for exerting a first axial thrust therein, as shown in FIG. said thrust bearing naming said first axial thrust to said swing plate so that said portion engaging the shaft of said swing plate clutch said output shaft of the transmission; (h) a disengage member having mechanical contact with said terminal portion of said swinging plate for exerting a second axial thrust on said swinging plate, said second axial thrust being opposed to said first axial thrust so that said swinging plate can be disengaged from said transmission output shaft of the transmission by said disengagement member, and (i) a pair of driving rod pivots attached to said swinging plate and connected to a pair of driving bars for opening and closing such a pair of doors spaced apart from each other.

Description

VEHICLE TRANSFER DOOR SYSTEM FIELD OF THE INVENTION The present invention relates in general to an operator for a passenger vehicle type passenger door system and more particularly, the present invention relates to an operator for door systems of rotating type and of sliding sliding separated in two for vehicles of transit of passengers. BACKGROUND OF THE INVENTION The design of the doors of the passenger transit vehicle is crucial for the safety of the traveling public. As is well known in the transit industry, these doors must operate in a relatively hostile environment, which includes at least intense use, extreme temperatures, acceleration and vibration loads. They must be closed and opened quickly and must meet conflicting requirements such as closing securely when they are in closed position and still must be able to open manually to provide emergency exit for passengers. A system known from the prior art is described in U.S. Patent No. 5,332,279, which is entitled "MECHANICAL DOOR OPERATOR FOR MULTI-PASSENGER MASS TRANSIT VEHICLES" (POWER DOOR OPERATOR FOR MULTI-PASSENGER MASS TRANSIT VEHICLES). The teachings of the reference patent are incorporated herein by reference thereto. The operator described in the reference patent has an electric motor linked to a transmission. The transmission has an output drive shaft that engages the actuator arms connected to the bars, which open and close the doors. A spring-loaded clutch plate includes a pair of pins that engage a collar attached to the actuator arms to hold the actuator arms in clutch with the output shaft of the transmission. To provide the emergency exit when the doors are closed, a piston pushes the clutch plate to disengage the drive arms of the transmission output shaft of the transmission so that the doors can be opened. Difficulties have been experienced with this prior art design because the combination of the pin and collar tends to lock if it is not perfectly aligned. In addition, when the doors are open and closed, the pins slide in a slot in the collar and experience excessive deterioration. This is because the pins continuously exert a force on the collar to deflect the actuator arms toward the clutch with the transmission output shaft of the transmission.

SUMMARY OF THE INVENTION In a first embodiment, the present invention provides an operator for a mass transit vehicle door system having a pair of doors separated in two. It includes a base for joining the mass transit vehicle and a source of motive power. It also includes a connected transmission to receive the motive energy coming from the source of motive energy. Such a transmission includes a transmission shaft of the transmission output. Either, the source of motive energy or transmission is attached to the base. The operator further includes a swing plate having a portion that engages the shaft to engage the shaft. The shaft has a portion that engages the swing plate to engage the operator's swing plate. A thrust bearing is in mechanical contact with a terminal portion of the balancing plate and a spring is in mechanical contact with the thrust bearing to exert a first axial thrust therein. Such a thrust bearing communicates the first axial thrust to the swing plate so that the portion that engages the shaft of the swing plate clutches the portion that engages the swing plate of the shaft. The operator further includes a disengagement member that has mechanical contact with the end portion of the swing plate to exert a second axial thrust on the swing plate. This second axial thrust is opposite to the first axial thrust so that the swinging plate can be disengaged from the shaft by the disengagement member. A pair of pivots of the driving rod are attached to the swing plate. The pair of pivots of the driving rod is connected to the pair of driving bars to open and close the pair of doors separated in two. In a second modality, the present invention provides a system of revolving doors separated in two for a mass transit vehicle. Such a system of revolving doors separated in two includes an operator having a base for attachment to the mass transit vehicle and a source of motive power. Also, the system of revolving doors separated in two, includes a transmission that is connected to receive the motive energy coming from the source of motive energy. Such transmission having a transmission output transmission shaft. Either, the source of motive energy or transmission is attached to the base. The operator has a balancing plate that has a portion that engages the shaft to engage the shaft and the shaft has a portion that engages the swing plate to engage the swing plate. A thrust bearing is in mechanical contact with a terminal portion of the balancing plate and a spring is in mechanical contact with the thrust bearing to exert a first axial thrust therein. Such a thrust bearing that communicates the first axial thrust to the swing plate so that the portion that engages the shaft of the swing plate clutches the portion that engages the swing plate of the shaft. In addition, the operator has a disengagement member that has mechanical contact with the terminal portion of the swing plate to exert a second axial thrust on the swing plate. The second axial thrust is opposite to the first axial thrust so that the swing plate can be disengaged from the shaft by the disengagement member. A pair of driving rod pivots are attached to the swing plate and a pair of driving bars are attached to the driving rod pivots. The system includes a pair of sliding doors separated in two and the driving bars are attached to the door pivots connected to the sliding sliding doors in two to move the doors between the positions, open and closed. In a third embodiment, the present invention provides a system of sliding doors separated in two for a mass transit vehicle. This system includes an operator that has a base for joining the mass transit vehicle and a source of motive power. It also has a transmission connected to receive the motive energy coming from the source of motive energy. The transmission includes a transmission output drive shaft. Either, the source of motive energy or transmission is attached to the base. The operator further includes a swing plate having a portion that engages the shaft to engage the shaft. The shaft has a portion that engages the swing plate to engage the swing plate. A thrust bearing is in mechanical contact with a terminal portion of the balancing plate and a spring is in mechanical contact with the thrust bearing to exert a first axial thrust therein. Such a thrust bearing communicates the first axial thrust to the swing plate so that the portion that engages the shaft of the swing plate clutches the portion that engages the swing plate of the shaft. The operator further includes a disengagement member that has mechanical contact with the end portion of the swing plate to exert a second axial thrust on the swing plate. This second axial thrust is opposite to the first axial thrust so that the swinging plate can be disengaged from the shaft by the disengagement member. A pair of driving rod pivots are attached to the swing plate and a pair of driving bars are attached to the driving rod pivots. The system has a pair of sliding sliding door panels separated in two and the driving bars are attached to the door pivots connected to the sliding sliding doors separated in two to move the doors between the open and closed positions. OBJECTS OF THE INVENTION It is, therefore, one of the main objects of the present invention to provide an operator for doors for passenger transit vehicles separated in two, which can be disengaged so that the doors can be opened. Another object of the present invention is to provide a door operator of the transit vehicle having a swing plate that suffers less deterioration than the prior art designs. Still another object of the present invention is to provide a bypass means for a swing plate in a transit vehicle door system that uses a thrust bearing to reduce deterioration. Still another object of the present invention is to provide a bypass means for a roll plate in a transit vehicle door system, which reduces the lock. A further object of the present invention is to provide a bypass means for a swing plate in a transit vehicle door system, which is highly reliable. It is a further object of the present invention to provide a bypass force for a roll plate in a transit vehicle door system, which can be operated manually to provide the emergency exit of passengers. Still yet another object of the present invention is to provide a shunt means for a swing plate in a transit vehicle door system, which can easily modify the prior art system. A further object of the present invention is to provide a system of two-way transit vehicle doors having a stop for controlling the compression of the door seals when the doors are closed. Another object of the present invention is to provide a system of two-way transit vehicle doors having an adjustable stop to control the compression of the door seals when the doors are closed. Also, an object of the present invention is to provide a stop to precisely limit the closing of the doors to prevent the block of the drive mechanism. In addition to the various objects and advantages of the present invention that have been generally described above, there will be several other objects and advantages of the invention that will become more readily apparent to those skilled in the relevant art, from the following description more Detailed description of the invention, particularly when the detailed description is taken in conjunction with the figures of the accompanying drawings and with the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a front elevational view of a system of revolving doors separated in two for a passenger transit vehicle according to the present invention. Figure 2 is a top view of a system of revolving doors separated in two for a passenger transit vehicle according to the present invention. Figure 3 is a front elevational view of a transit vehicle door actuator according to the present invention. Figure 4A is a top view of the door operator of the transit vehicle illustrated in Figure 3, with the release member in the normal and disengaging positions. Figure 4B is a sectional detail of a thrust bearing used to derive the swing plate towards the clutch with the output drive shaft. Figure 5A is a side elevational view of the swing plate. Figure 5B is a sectional detail of the swing plate terminal showing a circumferential groove and a cavity for the thrust bearing. Figure 6 is a front elevational view of the disengagement member. Figure 7A is a front elevation view of the swing plate. Figure 7B is a front elevational view of the end of the transmission output shaft of the transmission, which shows the portion that engages the swing plate. Figure 8 is a front elevational view of a system of sliding passenger vehicle doors separated in two, in accordance with this invention. Figure 9 is a top view of the system of sliding passenger vehicle doors separated in two, according to this invention.

BRIEF DESCRIPTION OF THE CURRENTLY PREFERRED MODALITY AND VARIOUS ALTERNATIVE MODALITIES OF THE INVENTION Before proceeding with the much more detailed description of the present invention, it should be noted that the identical components having identical functions have been identified with identical numerical references throughout all the Various views illustrated the figures of the drawings for reasons of clarity and understanding of the invention. Reference is now made, more particularly, to Figures 1 and 2. Illustrated therein is a system of revolving doors of passenger transit vehicle separated in two, generally designated as 10, according to a currently preferred embodiment of the vehicle. invention. The revolving door system 10 includes an operator, generally designated 50. The operator 50 includes a base 52 and a power source 54, which drives a transmission 56. Additional detail is provided with respect to the operator 50 in Figures 3 , 4A, 4B, 5A, 5B, 6, 7A and 7B. It is currently preferred that the transmission 56 be attached to the base 52. The transmission 56 has an output drive shaft 58, which engages a swing plate 60. A pair of driving bars 24 are attached to the driving rod pivots 74. placed on such a swing plate 60. Such driving bars 24 are attached to the driving pins of the doors 14 to open and close the doors 12. The doors 12 are shown closed in Figures 1 and 2 and their open positions are shown in translucent . The contact rods 18 are provided, which can be used by a passenger to open the doors 12 when the vehicle (not shown) stops. The doors 12 are pivoted about the pivots of the doors 16 and, preferably, such doors 12 are provided with hermetic latches for doors 20 and 22. Illustrated in Figures 8 and 9 is a system of sliding doors separated in two. currently preferred, generally designated 30, according to an alternative embodiment of the invention. The presently preferred operator 50 may be used for several two-part door systems, including the revolving door system 10 having two-part rotary doors 12 or such sliding sliding door system 30 having sliding doors separated in two by two. The operator 50 has the base 52 for attachment to the passenger transit vehicle (not shown) and a source of motive power 54. In the currently preferred embodiment, the power source 54 is an electric motor. In this embodiment of the invention, the operator 50 also includes a transmission 56 connected to the source of motive power 54 in order to receive the motive energy coming from it. The transmission 56 has a transmission output shaft of the transmission 58. It is currently preferred that the transmission 56 is not reactable in order that the transmission 56 acts as a safety device to prevent the inadvertent opening of the doors 12 or doors 32 when They are closed. Either, the power source 54 or the transmission 56 is attached to the base 52. The operator 50 includes a roll plate 60 having a portion that engages the shaft 100 to engage the shaft 58 and the shaft 58 includes a portion which engages the swing plate 110 to engage the swing plate 60. In the presently preferred embodiment shown, the engaging portion of the swing plate 110 of the shaft 58 includes at least one substantially radially oriented member 82, preferably a shaft. Also, it is currently preferred that the portion that engages the shaft 100 of the swing plate 60 includes a central opening 78 and two slots 80, which are oriented substantially radially. The slots 80 are for receiving the radially oriented member (s) 82 to provide a connection rotatable between the swing plate 60 and the shaft 58. The swing plate 60 slides on the shaft 58 to engage and disengage the radially oriented member (s) 82 with the slot 80. A thrust bearing 66 is in mechanical contact with an end portion 68 of the balancing plate 60 and a spring 70 is in mechanical contact with the thrust bearing 66 to exert a first axial thrust on the thrust bearing 66. The thrust bearing 66 communicates the first axial thrust towards the roll plate 60, such that the portion that engages the shaft 100 of the swing plate 60 clutches the portion that engages the swing plate 110 of the shaft 58. It is currently preferred that the terminal portion 68 of such a swing plate 60 have an annular cavity. 67 for receiving such thrust bearing 66. Preferably, the spring 70 is a spiral spring positioned concentric with the shaft 58 and with the shaft 58 positioned within the spring 70. The operator 50 includes a disengagement member. 72 placed in mechanical contact with the terminal portion 68 of the roll plate 60 to exert a second axial thrust on the roll plate 60. Such a second axial thrust is opposite the first axial thrust, such that the roll plate 60 can disengaging from the shaft 58 by such disengagement member 72. In the presently preferred embodiment, such disengagement member 72 is a lever pivoted on the disengagement lever pivot 84 and includes a portion that engages the sway plate 85. The end portion 68 it has a portion engaging the release lever 86, which preferably is a circumferential groove formed in the terminal portion 68. It is also preferred that such release member 72 has a pair of pins 88 for engaging with the circumferential groove 86. In addition, the disengage member 72 preferably has a moving receiving portion 90, which preferably is attached to a piston 92 having a knob 94 to be activated manually. When the doors 12 or the doors 32 are closed and held in the closed position by the transmission 56, a person can open these doors by pressing the knob 94 to move the piston 92 to rotate such disengage member 72, which moves the end portion 68 and consequently such swing plate 60 in order to disengage such swing plate 60 from shaft 58. When this is done, swing plate 60 is free to rotate about shaft 58 and doors 12 or 32 can open up There is a pair of driving rod pivots 74 attached to the balancing plate 60. Such a pair of driving rod pivots 74 are connected to a pair of driving bars 24 or 48 to open and close the pair of doors separated in two 12 or 32 It has been found that it is desirable to join tensioners 75 to the driving rod pivots 74, as shown in Figures 3 and 5A. It is currently preferred that the swing plate 60 has a stop of the swing plate 96, which provides precise control of the closed positions of the doors 12 or 32 and, also, the compression of the door seals 20 and 22 or 44 and 46. If a failure in the control system allows the doors to close beyond the normal position, due to excessive compression of the seals, the door pivots 14 or 34 would move to a locked position in which the doors could not open. In the preferred embodiment shown, the top of the balancing plate 96 is a passage on the perimeter 97 of the balancing plate 60. The stop of the balancing plate 96 is for engagement with the base stop 98. Preferably, the base stop 98 has a position that is adjustable so that the compression of the door seals 20 and 22 or 44 and 46 can be adjusted to a desired level. In the presently preferred embodiment, the driving rod pivots 74 are located approximately in diametrically opposed positions as shown, for example, in Figure 3. Figures 8 and 9 show a sliding sliding door system 30 according to the invention . The operator 50 has a balancing plate 60, which moves the driving bars 48 which are connected to the driving pins of doors 34. The movement of such driving bars 48 causes the rotation of the door pivots 34, which rotate the exterior suspensions for doors 42 that are attached to the doors 32. The doors 32 are also suspended by interior suspensions for doors 38 which roll on the rails 40. Figure 9 shows the doors 32 in a closed position, in which the closure hermetic for doors 44 clutch the hermetic seal for doors 46. This figure also shows, in translucent, the doors 32 in the open position. The J-shaped arms are also attached to the doors 32 to support the doors 32. Such J-shaped arms 31 are attached to the door pivots 36 and follow the conventional practice in the matter of sliding sliding doors. Although a currently preferred embodiment and several alternative embodiments of the present invention have been described in detail above according to the patent statutes, it should be recognized that various other modifications and adaptations of the invention may be made by those skilled in the relevant art without departing from either the spirit of the invention or the scope of the appended claims.

Claims (19)

1. NOVELTY OF THE INVENTION Having described the present invention, it is considered as a novelty and therefore the property described in the following claims is claimed as property. 1. An operator for a door system for a mass transit vehicle having a pair of doors separated in two, said operator comprising: (a) a base for attachment to such a mass transit vehicle; (b) a source of motive energy; (c) a transmission connected to said source of motive energy to receive the energy coming from it, said transmission having a transmission shaft of the transmission output; (d) joining at least one of said source of driving energy and said transmission to said base; (e) a rolling plate, including said rolling plate; (i) a portion that engages the shaft to engage said output shaft of the transmission and (ii) a terminal portion; (f) a thrust bearing in mechanical contact with said terminal portion of said sway plate; (g) a spring in mechanical contact with said thrust bearing for exerting a first axial thrust therein, said thrust bearing communicating said first axial thrust to said swash plate so that said portion engaging the shaft of said plate swinging clutch said transmission shaft output of the transmission; (h) a disengagement member having mechanical contact with said terminal portion of said balancing plate for exerting a second axial thrust on said balancing plate, said second axial thrust being opposed to said first axial thrust so that said plate rolling may be disengaged from said output shaft of the transmission by said disengagement member; and (i) a pair of driving rod pivots attached to said swinging plate and connected to a pair of driving bars for opening and closing such a pair of doors separated in two. An operator according to claim 1, characterized in that said portion that engages the shaft of the swing plate of said swing plate includes a central opening to fit on said transmission output shaft of the transmission. An operator according to claim 2, characterized in that said portion that engages the shaft of the balancing plate further includes at least one radial groove communicating with said central opening. An operator according to claim 3, characterized in that a portion that engages the balancing plate of said transmission output shaft of the transmission includes at least one member radially attached to said output shaft of the transmission. 5. An operator according to claim 3, characterized in that said at least one radial groove are two diametrically opposed radial grooves and a portion that engages the rocking plate of said transmission output shaft of the transmission includes two radially diametrically opposed members attached to said shaft. Transmission output drive shaft. An operator according to claim 4, characterized in that said at least one radially placed member is a bar having an axis placed substantially parallel to a radius of said transmission output shaft of the transmission. An operator according to claim 1, characterized in that said release member is a disengagement lever each having a pivot of the disengagement lever attached to said transmission and a portion that engages the balancing plate to engage said end portion of said rolling plate. An operator according to claim 7, characterized in that said balancing plate has a circumferential groove in said terminal portion of said balancing plate for engaging said portion that engages the swing plate of said disengagement lever. An operator according to claim 8, characterized in that said portion engaging the swing plate of said clutch lever includes a pair of pins for engaging said circumferential groove. 10. An operator according to claim 7, characterized in that said disengagement lever further includes a moving receiving portion for moving said disengagement lever. An operator according to claim 10, characterized in that said portion engaging the swing plate of said disengagement lever is placed between said pivot of the disengagement lever and said moving receiving portion of said disengagement lever. An operator according to claim 11, characterized in that said operator further includes a piston for engaging said moving reception portion of said disengagement lever, said piston being operative to disengage said balancing plate from said output drive shaft of the transmission. An operator according to claim 12, characterized in that said piston further includes a knob, said piston being capable of being activated manually by said knob. An operator according to claim 1, characterized in that said roll plate includes a stop of the roll plate to limit the rotation of said roll plate when said doors are closed, said stop of the roll plate contacting a base stop attached to said base when such doors are closed. 15. An operator according to claim 14, characterized in that said base stop includes a means for making a position of said adjustable base stop. 16. An operator according to claim 14, characterized in that said stop of the roll plate is at least one step placed on a perimeter of said roll plate. 17. An operator according to claim 1, characterized in that said pair of driving rod pivots are located approximately in diametrically opposite positions. 18. A system of revolving doors separated in two for a mass transit vehicle, said revolving door system separated in two: (a) an operator that includes a base for attachment to such a mass transit vehicle, a source of driving energy, a transmission connected to said source of motive energy to receive the motive power coming from it, said transmission having a transmission shaft of transmission output, joining at least one of said source of motive energy and said transmission to said base, a swing plate having a portion that engages the shaft to engage said output shaft of the transmission, a thrust bearing in mechanical contact with said swing plate, a spring in mechanical contact with said thrust bearing to exert a first axial thrust therein, said thrust bearing communicating said first axial thrust to said swing plate in order to that said portion engaging the shaft of said balancing plate clutch a portion that engages the swing plate of said transmission output shaft of the transmission and a disengagement member having mechanical contact with said balancing plate to exert a second thrust axial in said swing plate, said second axial thrust opposite said first axial thrust so that said swing plate can be disengaged from said output shaft of the transmission by said disengage member; (b) two door driving bars connected to a pair of driving rod pivots in said swinging plate; and (c) a pair of revolving doors separated in two, said door-driving bars connecting to said door-driving pivots and having mechanical connection to said two-way revolving doors to move said revolving doors separated in two between the open and closed positions. closed . 19. A system of sliding sliding doors separated in two for a mass transit vehicle, said sliding sliding door system separated into two: (a) an operator that includes a base for attachment to such a transit vehicle in mass, a source of motive energy, a transmission connected to said source of motive energy to receive the motive energy coming from it, said transmission having a transmission shaft of output of the transmission, joining at least one of said source of motive power and said transmission to said base, a swing plate having a portion that engages the shaft to engage said transmission output drive shaft, a thrust bearing in mechanical contact with said swing plate, a spring in mechanical contact with said thrust bearing for exerting a first axial thrust therein, said thrust bearing communicating said first axial thrust to dich a swing plate so that said portion that engages the shaft of said swing plate clutch a portion that engages the swing plate of said transmission output shaft of the transmission and a disengagement member having mechanical contact with said plate of swinging to exert a second axial thrust on said swinging plate, said second axial thrust being opposite said first axial thrust so that said swinging plate can be disengaged from said output shaft of the transmission by said disengagement member; (b) two door driving bars connected to a pair of driving rod pivots in said swinging plate; and (c) a pair of sliding sliding doors, said door driving bars being connected to said pair of said door driving pivots and having mechanical connection to said sliding sliding doors separated in two to move said sliding doors separated in two. between the positions, open and closed. SUMMARY An operator of the door system for a transit vehicle separated in two. The operator includes a base for joining the mass transit vehicle and a power source connected to a transmission having an output drive shaft. Such an operator further includes a swing plate having a portion that engages the shaft to engage the shaft. The shaft has a portion that engages the swing plate to engage the operator's swing plate. A thrust bearing is in mechanical contact with a terminal portion of the balancing plate and a spring is in mechanical contact with the thrust bearing to exert a first axial thrust therein. The thrust bearing communicates the first axial thrust to the swing plate so that the portion that engages the shaft of the swing plate clutches the portion that engages the swing plate of the shaft. The operator includes a disengagement member that has mechanical contact with the terminal portion of the swing plate to exert a second axial thrust on the swing plate. The second axial thrust is opposite to the first axial thrust so that the swing plate can be disengaged from the shaft by the disengagement member. A pair of driving rod pivots is attached to the swing plate. Such a pair of driving rod pivots are connected to a pair of driving bars to open and close the pair of doors separated in two.