Патент USA US2411266код для вставки
NOV’ 19, 1946. w. HAMILTON 2,411,266 SOLENOID LOCKED PUSH DOOR Filed Oct. 19, 1945 2 Sheets-Sheet l N“.“N.*W. :l z i l O\ A . Q“.\ k\\“N“. \.N\ /% INVENTOR WALLACE HAMlLTON BY % t V ‘ IATTOiNEYS Nov. 19, 1946. w. HAMILTON 2,411,266 . SOLENOID LOCKED PUSH DOOR Filed Oct. 19, 1945 2 Sheets-Sheet 2 a“. INVENTOR WALLACE HAMILTON BY ATTO EYS - Patented Nov. 19, 1946 V 2,4ll,266 UNITED ; STATES _ PATENT OFFICE .11 SOLENOID, LOCKED PUSH noon Wallace Hamilton, Albany, N. Y., assignor to . 1 Consolidated Car-Heating Company, Albany, N. Y., a corporation of New York , Application October 19, 1945, Serial No. 623,196 9 Claims. (Cl. 292-1) 1 2 This invention relates to improvements in door operating mechanisms and locking devices Figure 5 is a diagrammatic and schematic cir cuit arrangement for controlling the solenoid lock therefor. The general object of this invention is to pro vide an improved and simpli?ed mechanism for e?ecting the opening and closing of doors par ticularly of the push type as frequently employed so as to lock the door in closed position only. » on vehicles of various types as, for example, buses. An object of this invention is to provide a sim , . The description of the mechanism and its oper ation will be given vunder the assumption that the invention has been applied to a vehicle such as a modern motor coach, although it will be apparent from the disclosure that the invention is not limited to such use and indeed is not lim ple locking mechanism for this type of door in 10 ited to use on vehicles. In. accordance with this, the form‘ of a solenoid. assumption and as is quite ‘frequent practice, a ‘ A more speci?c object of the invention is to provide a combination in which the solenoid lock acts to lock the door in the closed position, and also, if "desired, in the open position. pair. of door shafts H3 and‘ II are‘ iournaled in suitable bearing ‘members on vertical‘ parallel axes at the side edges of ‘the door opening. 1 In 15 the form o-fmechanism illustrated, the door com; ' Another object is to provide a control in the combination of the foregoing object whereby the unlocking of the door for opening or closing is under the control of an attendant as, for exam prises a pairof leaves 12- and I3‘ attached‘ to the shafts m and I l, respectively, for‘ rotation there with and meeting on a vertical central line with respect to the door opening; ‘As will appear later, 20 these door leaves swing‘ from‘a common plane ple, the bus driver. when in closed position outwardly and away from A broader object of the invention is to provide each other to a position at right angles to the a push door operating and locking mechanism door closed plane so as to project exteriorly of which may be applied to the rear or remote door or doors of a vehicle without causing undue acci the vehicle. The shafts I0 and H are shown 25 journaled on their upper‘ ends in any suitable dent hazards. form of bearing members l4 and I5 mounted on Still another object of the invention is to pro vide a push door construction. which permits of some suitable portion of the bus structure. opening the door by pushing thereon and wherein there is employed a spring operated motor, such tending across the top of the door opening and as a door check, for closing the door. ’ ‘ , Other and‘more detailed objects of the inven tion will be apparent'from the following descrip tion of the single embodiment thereof illustrated in the attached drawings. ‘ This invention resides substantially in the com bination, construction arrangement and relative location of parts as will be described in detail below. , In the accompanying drawings Figure l is an elevational View of the mecha nism of this invention and a portion of the doors over which it is mounted ‘when viewed, in the‘ case of application‘ to a vehicle, from the inside thereof; Figure. 2‘ is a top plan view of the mechanism of Figure 1v showing some parts in cross-section and some parts broken away ‘to improve the illus tration, the parts being shown in door closed position; - . . Figure 3 is a view similar to Figure 2 showing the doors in full open position; Figure 4‘is ‘a, diagrammatic and schematic cir Ex_ lying in a horizontal plane is a lintel or other suitable form of supporting plate I6 on which the overhead mechanism‘ is mounted. In this case‘this‘ mechanism includes a suitable form of supporting L-shaped bracket 2! on which the mechanism parts ‘are, mounted. . Attached to the door shafts l0 and II for rota tion therewith are the levers‘ l1 and I8 which are respectively connected'by means of rigid links or rods l9 and 20 to the arms 21 and 29 of a three armed lever which includes the arm 28. The arm 28 is pivotally connected by the link 26 to a bell crank lever ‘having the arms 24 and 25 pivotally mounted on the pin 23 forming part of‘a stand ard 22 mounted on the bracket 2|. The three-pronged lever is secured to the ro tat'alble ‘shaft 30 of any ‘suitable form of com monly used‘ spring biased type of door check 3| - which is shown secured to the vertical wall of the bracket 2 !. Mounted upon or formed on the door check' shaft 30 is a cam 32 positioned to engage the roller on‘the operating arm 34 of a single-pole double-throw switch 33 supported in any suitable manner, not shown. ‘ The free ‘end of the arm 25 of the bell crank cuit arrangement for controlling the solenoid of which it’ is a part is bifurcated and engages look so as to lock the door in both open and closed 55 a pin mou‘nted‘in the ‘bifurcated end‘of a plunger position; and 2,411,266 4 36 for the solenoid 31. The solenoid 31 has an inwardly projecting core piece 38 which may be longitudinally adjusted within the passage in the solenoid and locked therein in any suitable man ner as, for example, by means of a lock nut as shown. Thecircuit arrangement is illustrated in Fig ure 4. One terminal of the solenoid 3'! is con a point of maximum stress when the door is fully open. It, of course, tends to close the door but the solenoid prevents this. After all the pas sengers have moved through the doorway the ve hicle operator moves switch 40 back to its orig inal position de-energizing the solenoid 31 in an obvious manner. This releases the door so that the stress spring in the door check; can return nected to one terminal of any suitable form of all of the parts including the door leaves to closed current source 39. The other terminal of the 10 position. The operation of switch 33 is reversed solenoid is connected to the movable contact of so that just as the door is fully closed solenoid a single pole double throw switch 40 adapted to 31- is again energized to lock the door in closed be placed under the control of an attendant as, position. It will, of course, be understood by for example, the bus operator. In this ?gure the ' those skilled in the art that switch 40 can be single-pole double-throw switch 33 is diagram; 15 tied in in many ways with the operation of the matically illustrated and is shown with its mov vehicle so that its operation is automatic. able‘ contact connected to the other terminal of In conditions of use where it is not necessary the current source 391. The ?xed contacts of the to lock the door open a very simpli?ed circuit switches 33 and 40 are connected together in pairs . arrangement as shown in Figure 5 can be em as shown. 20 ployed, in which case the manual switch 40 is The following comprises a description of the merely opened when it is desired to free the doors operation of this mechanism. The circuit of Fig for opening, and remains open until the door is ure 4 shows the position of the switches when closed, whereupon it is closed to re-energize the the door is closed and locked at which time the locking magnet. Of course, in this case the solenoid 37 is energized as follows: Current ?ows 25 switch 33 and the cam operator 32 are not em from the source 39'through the winding of the ployed. solenoid 31 to the movable contact of switch 4|], A study of the linkage system will show that from there to the movable contact of switch 33 when the door is closed and although the toggle and back to the current source 39. Thus the arrangement formed by the links i9 and 20 and solenoid 31 is energized. _ 30 the three-armed lever is not in straight line ar V Figure 2 shows the linkage system of the doors rangement it is nearly so, ‘with the result that a in the position they assume when the door is relatively small force exerted by the solenoid, 31 closed at which time the'inner end of the plunger when its effect is multiplied through the bell 36 is ‘closely adjacent to the ?xed core 38 of the crank connection, in effect exerts a much greater solenoid. I In'order to condition the door so that 35 f force to prevent the opening of the doors.‘ .It it may be pushed open the vehicle operator at will be noted that the plunger 36 is closely Jad the proper time ‘operates switch 40 from the posi tion shown in Figure 4 to its other position break ing the circuit to the solenoid 31 in an obvious jacent to the core during door open and door closed position so that the maximum eiiect of the magnetic ?eld is secured. Similarly, when mannen ' A person wishing to alight through the 40 the door is locked in open position the bell crank‘ doors pushes on one or both leaves thereof caus and connecting links with the three-armed lever ing a reaction through the linkage system to elfect clockwise rotation (Figure 2) of the three-armed lever 21—2B—29 from the position shown in Fig ure 2 to the ultimate position shown in Figure 3. The ?rst movement of the three-armed lever causes clockwise rotation of the bell crank 25-24 which it will be seen causes the plunger 36 to move to the right, that is away from the core 38. From the kinematics of the linkage system it will be apparent that as rotation of the three-armed lever continues, the bell crank will reach a posi tion of rest at the end of its clockwise rotation and then as the three-armed lever continues to rotate in a‘ clockwise'rotation, as the doors ‘ap proach full ‘open vposition, the bell crank'lever will begin'to rotate-in a counterclockwise direc tiOIlr'fThiS movementof the bell crank will con magnify the force exerted by the magnet so that a large force would have to be applied to the doors to close them. A very important and practical feature of this invention resides in the fact that the toggle link age system is so arranged and therplunger 3t'is so positioned with respect to the core 38 that a maximum closing eiiortis applied to the door just before it reaches fully closed position. It will be understood, upon consideration, that at that time the door check spring is exerting its minimum closing eiiect-since it is most nearly relaxed. Thus the locking magnet and linkage system are contributing their maximum closing elTect at the time when most needed, namely when the door check is least active for that-pur pose. ~ A further feature of this arrangement resides tinue with the parts properly proportioned so that when the door is fully opened plunger 36'will 60 in the fact that again the maximum magnet and linkage actions are exerted when the door is move back to its initial position most closely ad closed, thereby resisting!‘ any tendency of the’ jacent, with respect to its end,,tovthe ?xed core 38. doors under the centrifugal‘ forcesv incident to When the door'begins to open the lower por operation of the vehicle from tending to open tion cam 32 will operate the switch 33' to dis connect the current source from the upper con even slightly. tact ‘(Figure 4) and hold that position until the door‘ reaches fully open position, at which time that the spring of the door check is exerting its the higher portion of’ cam 32 will move the switch arm stilljfurther (see Figure 3), at which time the switch will close on the lower contact com pleting a circuit from the left hand contact of switch 40 through switch 33 for the solenoid 31 which becomes energized and locks the door in open position. During the'opening movement the spring of the door check 3| is 1being‘stIfeEiSed 1K? Of course, it is at this very time Thus, by the interacting are rangement of the locking magnet parts and link age system as disclosed, any tendency of the door to open at an undesired time is completely pre ‘ minimum force. vented. - > ' i - From the above description it will be‘ apparent to those skilled in the art that the structural. details of this invention are capable of consider; able valiation Without departure from the ‘novel ’ 2,411,266 5 6 subject matter herein disclosed. I do not, there fore, desire to be limited by the disclosure which ated upon movement of said door shafts to ?rst de-energize said solenoid at the beginning of opening movement and to energize it again at the end of the opening movement. has been given in an illustrative sense but rather by the terms of the appended claims. What is claimed is: 1. In a door operating system, the combina tion including a pair of door shafts, a spring biased door check having a multiple armed lever 5. In the combination of claim 1, circuit means for energizing said solenoid including a switch operated by said door check for controlling the energization of said solenoid. connected thereto, linkage systems for connect 6. In the combination of claim. 1, circuit means ing said shafts to a pair of the arms of said lever, 10 for energizing said solenoid including a manual a solenoid having a reciprocable plunger, and a switch and a switch operated by said door check linkage system interconnecting said plunger with whereby when the manual switch is positioned for door opening operation the other switch re another arm of said lever, said plunger lying in the same position with respect to said solenoid energizes the solenoid at the end of the‘ opening for door open and door closed positions. 15 and closing movements. 2. In a door operating system, the combina 7. In the combination of claim 1, circuit means for energizing said solenoid including a switch tion including a pair of door shafts, a spring biased door check having a multiple armed lever for energizing the solenoid to lock the door in connected thereto, linkage systems for connect closed position. ' ing said shafts to a pair of the arms of said lever, 20 8. In a door operating system, the combination a solenoid having a reciprocable plunger, and a including a door shaft, a spring biased door check, a toggle linkage system for connecting said shaft linkage system interconnecting said plunger with an arm of said lever and adapted to cause the and door check, a solenoid having a reciprocable plunger connected to said linkage system, and plunger to move from an initial position and back to that initial‘ position during the opening or means for controlling the energization of said closing movement of the door shafts. 3. In the combination of claim 1, means for energizing said magnet including a switch oper ated upon movement of said door shafts to in solenoid, said magnet and toggle linkage system exerting a maximum closing effort on. said shaft When it is in door closed position. 9. In the combination of claim 8, the spring terrupt the circuit of said solenoid at the begin 30 of said door check being most relaxed in door ning of opening movement and to complete it at closed position of said shaft and said solenoid the end of the opening movement. and magnet system at that time exerting a max imum closing effort. 4. In the combination of claim 2, means for energizing said magnet including a switch oper WALLACE HAMILTON.