US2045765A - Door operator - Google Patents

Description

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DOOR OPERATR i Filed March 28, 1931 4 Sheets-Sheet l y Ju@ 30, 1936, J. EW FOGAL I 2mm@ DOOR OPERATOR v Filed March 28, 1951 4 sheets-sheet 2 J2 5o j 150145 BO, W3.' J. E. w. FGAL DOOR OPERATOR 4 .Sheets-Sheet 5 Filed March 28. 1951 .Fume 30, i936. J. E. W. FOGAL AJOOR OPERATOR Filed March 28, 1931 4 Smeets-Sheet 4 mm.. BN

mwN N EN Patented June 30, 1936 sres AENT orties DOOR OPERATOR Application March 28,

11 Claims.

The invention relates to doorconstructions of types too large to be manually opened and closed, and includes among its objects and advantages an increase in operating facility and a decrease in the cost and complexity of the operating mechanism for one or more doors.

In the accompanying drawings:

Figure 1 is a side elevation of a door operating mechanism; v v

Figure 2 is a longitudinal sectional View of a portion of the structure shown in Figure 1;

Figure 3 isa sectional viewtaken substantially along the line 3--3 of Figure 1;

Figure i is a sectional view taken along the line fi-fi of Figure 1;

Figure 5 is a sectional view taken along th line of Figure 1;

Figure 6 is a diagrammatic view showing a plurality of doors associated with la single source of power; and

Figure 'l is la view showing a wirthe electrical equipment.

In the embodiment selected to illustrate the invention use is made of doors i' (see Fig. 6) connected with drums i2 upon which the doors may be wound through the medium of door operating mechanisms le which are associated with a motor i6 and a speed reducer E3. A main drive shaft il@ extends from the speed reducer I8 to the mechanisms li. `Each of the mechanisms may pe operatively connected with the main drive shaft for opening and closing its respective door iti, which is of the rolling type.

Push buttons 22,2@ and 26 representing up, down nd stop functions, respectively, are associated with each of the doors for controlling the electrical circuit through the motorV lli and its associated electrical devices identined in the mechanisms le. When the lbutton 22, associated with a given door, is pressed, that door will be woundupon its respective roll I2. Pressure upon button 26 will result in a. reverse movement of the door, and pressure upon the button 2t will of course stop the movement of the door in either direction. Y

VThe mechanisms ifi are all identical in construction, and each mechanism comprises a hanger body 28 (see Fig. 1) having recesses 3i! and 32 for receiving a roller bearing 34 and a thrust bearing 36 respectively. A central opening 38 places the recesses 3B and 32 in communication with each other so that a sleeve lli) may be associated with the bearings 34 and 36. The sleeve it is loosely mounted upon the main drive shaft 2t.

1931, serial No. 525,955

A plate E52 is secured to one end of the hanger body 28 by means of screws ld for holding the bearing Sil in place. A sealing disk 4t, which ts snugly upon the sleeve 4d, is positioned between the plate 32 and the bearing. A similar plate lf is secured to the opposite end of the hanger bodyforholding the thrust bearing 36 in place. Screws 5E) secure the plate d8 to the hanger body.

One end of the sleeve il@ is Vprovided 'with a fixed gear 52 arrangedin mesh with a companion gear Ei! associated with one of the drums l2.

The sleeve EEB is provided with a shoulder 56 which bears against the thrust bearing 36 and upon which a gear 58 is positioned. The gear is iixed to a second shoulder SEB through the medium of screws 62. The shoulder 6) is formed integrally with a clutch element 64. This element is provided with a clutch facing G6 which may be engaged by a movable clutch element 63 slidably mounted upon the drive shaft 2i) by means of keys ll. The clutch element 68 rotates with the drive shaft 2G and causes a rotation of the sleeve di! when it is moved into friotional engagement with the clutch element B4.

Means for moving the clutch element @8 comprises a clutch lever 'i9 having a bifurcated end l2 pivotally secured between lugs 'lf3 associated with a fulcrum member it. The fulcrum memer (see Fig. 5), is provided with an oiset portion 'i3 having an opening 8) for loosely receiving the main drive shaft. The ends of the fulcrum member are provided with openings 82 for receiving supporting bolts l8l! (see Figs. 1, 3, and 4). One end of each of the bolts 84 is rigidly secured to the fulcrum member by nuts 86 (see Fig. 1). The opposite ends of the bolts pass through openings 88 in lugs 9i)Y formed integrally with the hanger body 2S (see Figs. 1 and 3). Nuts 92 rigidly secure the bolts 8d to the lugs 9U.

A clutch bearing 94 is mounted upon the drive shaft 20 between the clutch element 68 and the bifurcated end i2 of the lever 'ID (see Figs. 1 and 2). The bearing retainer 96 is provided with lugs 93 to which the bifurcated end 12 of the clutch lever is pivotally connected as at |00.

Movement of the lever 'l0 from the full line position shown in Figure 1 to the dotted line position causes the bearing 94 kto move the clutch member V68 into frictional engagement with the clutch element 64 for locking the sleeve fiuto the drive` shaft 20. The sleeve is freed from the drive shaft 20 as soon as the clutch lever moves back to its full line position.

. YIn Figure l is shown the upper end of the lever as being connected with a bolt, Vllizwhich in turn is connected with a movable bar |04 forming a part of a solenoid |06 mounted upon an extension |08 cast integrally with the hanger body. The bolt |02 passes through an opening l0 in the end of the lever and is provided with a nut ||2. A spring ||4 is mounted upon'the bolt |02 and bears against the nut ||2 and a Washer I |6 which is positioned adjacent a curved portion |8 on one side of the lever 10. YThe bolt is pivotally connected with the bar |04 by means of a pin |20 so that freedom of action is obtained between the bolt, the bar |04, and the lever 10, during the shifting Yof the lever from one position to the other. The lever is pulled in the direction of the solenoid whenever the latter is energized.

One end of the hanger body 28 is formed with an integral platform |22 for supporting a limit switch |24. The switch is secured to the platform through the medium of screws |26. A shaft |28 associated with the limit switch extends in the direction of the arm 10 and carries a fixed gear |30 arranged in mesh with the gear 58. The gear 58 rotates with thev sleeve 40 so that the limit switch |24 is operated whenever the sleeve is moved.

Movement of the lever 10 operates a brake |32 for braking or releasing the clutch element 64. The brake band comprises members |34 (see Fig. 4) provided with brake lining |36 arranged to engage the shoulder 60. One end of each of the members is provided with an opening for receiving a bolt |38 upon which a spring |40 is mounted. The spring bears against the ends of the members |34 for holding the parallel ends yieldingly yet rmly in contact with the head |42 of the` bolt and a nut |44 upon the latter. The opposite ends of the members |34 are bent to provide substantially parallel portions |46 having openings through which a bolt |48 passes. The bolt also passes through openings |50 in the end of a pair of arms |52 which are integrally formed with the hanger body 28.

Springs |54 are positioned upon the bolt |48 between the arms |52 and the portions |46. A cam |56 is loosely mounted upon the bolt |48 and is provided with cam surfaces |58 arranged n contact with similar cam surfaces |60 upon companion cam members |62 attached to the portions |46 of the brake band. Rotation of the cam |56 in a counterclockwise direction as when viewing Figure 1 causes the members |34 to be spread and release the sleeve 40. The springs |54 move the members 34 in the direction of each other for braking the sleeve 40.

In Figure 1 is shown the cam |56 as having an arm |64 connected with the lever 10 through the medium of a link |66. It will thus be seen that the clutch is released whenever the solenoid is energized. The spring |4 upon the bolt |02 forms a cushion between the bar |04 and the arm. Y

The hanger body 28 is provided with enlarged portions |68 upon its side (see Fig. 3) having openings |10 therethrough for receiving the lower ends of bolts |12 having their upper ends secured to a supporting structure |14. The ends of the bolts passing through the supporting structure may be threaded for receiving nuts |16 whereby the hanger body'may be raised or lowered and firmly secured in its adjustedr position. The enlarged portions |68 are slit as at |18 so that the ears which are a part of the enlarged portions may be moved together by means tive .coils |86 and |88 are energized. Conductors |90, |92, |94, |96, |88, and 200 are connected with the conductors, L1, L2, and La, and associated with the D element. A solenoid brake 202, associated with the motor I6, is connected with the conductors |98 and 200.

The wiring diagram illustrated in Figure '7 is suitable for a two-door installation. groups of push buttons 22, 24, and 26, are shown. 'Ihese groups are indicated at A and B, and the description at the present time will be conned to group A. When the operator desires to raise one of the doors, the push button 22 for that door is pressed. Movement of the switch 22 into engagement with contacts |-3 Two "f" completes a circuit from La through conductors- 204 and 206, 4-2 of the stop push button 26,

conductor 220, |-3 of push button 22, conducn* tor 224, 2--4 of push button 24, conductor 208, coil 2|0, contact of the limit switch |24, contact of an interlock switch 205, conductor 203 to L2. The coil 2|0 is associated with an element 2|2 having contacts 2, and 3, comprisn ing the up reversing relay. This relay is closed when the coil 2|0 is energized.

As soon as the up relay is closed, a circuit through the solenoid |06 is closed as follows: conductors La, 204, and 2|4, contact of the up relay, conductors 2| 6 and 2|8, solenoid |06, and conductors 203 and L2. The brake |32 for the individual door is released as soon as the solenoid is energized.

The push buttons 22 and 24 are of the momentary contact type, and for this reason a sealing circuit is employed which is closed as soon as either reversing switch 2 |2 or 238 is closed. The sealing circuit is closed as follows when the push button 22 is pressed: conductors L3, 204, 206, 4 2 of the stop push button 26, conductor 220, contact 2 of the up reversing relay, conductors 222 and 224, 2-4 of the down switch, conductors 208, 203, and L2. Thus it will be seen that the circuit established by pressing the push button 22 will remain closed even though the push button is released.

The circuit through the motor |6 is closed as follows: conductors L3, 204, and 2|4, contact 3 of the up reversing relay, conductor 226, coil |86 of the reversing magnetic switch |84, conductors 228, 203, and L2. The energized coil |86 moves the U element for closing the circuit through the motor. A coil 230 is associated with contact 2 of the interlock switch. The coil is connected with conductor 203 and conductor 232 connected with the conductor 226. The Contact 2 of the interlock switch is opened when the coil 230 is energized sc that all down circuits remain open while the motor I6 is rotating in an up direction. The coil 230 is energized simultaneously with the coil |86.

Contact of the limit switch |24 is openedl 'the solenoid #66. ''he brake 32 ('see Fig. l) frictionally engages the shoulder 60 for braking the sleeve 4U' as soon as the solenoid is deenergized.

The open door is closed by pressing the `push button 2li. When the button is pressed, the vfollowing circuit is closed-1 conductors L3, 264, and 226, 4-2 ofthe push button 26, l-3 of the push button 2A, conductor 234, 4--2 of the push button 22, conductor 236, coil 23'! of the down reversing relay, contact 2 oi the limit switch, contact 2 of the interlock switch, and conductors 203 and L2. The coil 23? is associated with the element 238 having contacts l, 2, and 3. The down reversing relay is closed when the coil 23'! is energized. The sealing circuit is closed as follows: conductors 204 and 266, 4-2 of the stop switch 26, conductor 226, contact 2 of the down reversing relay, conductors El and 234, 4 2 of the push button 22, and conductors 236, 263, and L2.

The circuit through the solenoid l 06 is closed as follows when the down reversing relay is closed: conductors La, 26B, and 2M, contact I of the down reversing relay, conductors ZEG and 2|8, solenoid i555, and conductors 293 and L2. The circuit through the moto-r is established in the following manner: conductors L3, 262, and 2M, contact 3 of the down reversing relay, a conductor 242, coil 86, conductor 2M which is connected with conductors 2ii3 and Lz. The element D is moved for closing the contacts for the motor I6 when the coil ISB is energized.

A coil 24S is associated with the contact l of the interlock switch. The coil is connected with the conductor 293 and a conductor 268, which, in turn, is connected with the conductor 242. 'I'he coil 256 is energized simultaneously with coil |88 so that all up circuits are broken during the operation of the motor i6 for closing the door.

It will be noted that the initial and the sealing circuits for button 22 pass through the contacts for buttons 2d and 26; Valso that the initial and sealing circuits for button 2d pass through the contacts for buttons 26 and 22. Therefore, operating the stop button 26 will incapacitate both the up and down buttons and always stop the door. Similarly, pressing either button 22 or 24 when the door is moving in the opposite direction will first open the circuits for the other button and stop the door, an-d then start it in the new direction.

The conductors 288, 25S, 226, 242, and 236, of the group B are respectively connected with the conductors 2&8, 2|8, 226, 242, and 236, of the group A. The operation of group B is identical with group A. vIt is obvious that the circuit may be extended to accommodate any number of doors within the capacity of the motor I6 by merely adding groups C, D, etc.

The doors l2 may be individually opened or closed. Any number of the doors may be simultaneously opened or 'closed by pressing upon their respective push button 22 or 24. All the doors may be simultaneously opened or closed through the medium of a master switch 250 which is associated with a conductor 252 connected with the conductor L3. A conductor 254 is connected with the conductors 263, While a conductor 256 is connected with the conductors 236. When the master switch is operated for electrically connecting the conductor L3 withthe conductor 254, the up circuits will be closed, so that all the doors are simultaneously opened. When the master switch is moved for electrically connecting the conductor L3 with the conductor 256, all down circuits will f motor will continue to operate.

be closed so Vthat all the doors are simultaneously moved to their closed positions.

As each individual door reaches the limit of its movement, its limit switch l 2B will open and open the reversing switch for that door, which disconnects the clutch solenoid |66 for that doo-r and mechanically disconnects the door from the line shaft 26. As long as any door remains short of the end of its movement, at least one individual' reversing switch will remain closed, and the When the last door reaches its nal position, the opening of the last limit switch will stop the mo-tor.

The solenoid brake 262 is connected with the conductors L2 and L1 in such a manner that the brake is released whenever the reversing magnetic switch 84 is energized.

The invention claimed is:

1. The combination with a plurality of warehouse doors of the roll-up type, of a single electric motor, mechanical transmission means in the nature of a drive shaft extending from said motor into proximity with each of said doors., individual mechanical connections associated with each of said doors ior connecting and disconnecting that particular doo-r with said transmission means, electrical control means for each individual door, each electrical control means including, rst, means for operating said motor to open the door and simultaneously connecting said door to said transmission, second, means for operating said motor to close the door and simultaneously connecting said door to said transmission, and third, means for stopping said motor and simultaneously disconnecting said door from 5 said transmission, said mechanicall connections including brake means for holding said door against movement when it is not connected with said transmission; interlocking connections between the electrical means for all said doors whereby when the motor is operating to open, any door not entirely open may be mechanically connected to said transmission, and whereby when the motor is operating to close, any vdoor not entirely closed may be mechanically connected to said transmission; and individual electrical limit means associated with each door and operative to disconnect said door mechanically at the end ofits movement in either direction and to stop said motor when not required for operating some other door.

2. The combination with a plurality of warehouse doors of the roll-up type, of a single electric motor, mechanical transmission means in the nature of a drive shaft extending from said motor into proximity with each of said doors, 1ndividual mechanical connections associated with each of said doors for connecting and disconnecting that particular door with said transmission means, electrical control means for each individual door, each electrical control means including, first, means for operating said motor to open the door and simultaneously connecting said door to said transmission, second, means for operating said motor to close the door and simultaneously connecting said door to said transmission, and third, meansl for stopping said motor and simultaneously disconnecting said door from said transmission, said mechanical connections including brake means for holding said door against movement whenit is not connected with said transmission; interlocking connections between the electrical means for all said doors whereby when the motor is operating to open, any door not entirely open may be mechanically connected to said transmission, and whereby when the motor is operating to close, any door not entirely closed may be mechanically connected to said transmission; individual electrical limit means associated with each door and operative to disconnect said doo-r mechanically at the end of its movement in either direction and to stop said motor when not required for operating some other door; and master switch means for operating said motor in either direction and simultaneously connecting to said trasmission all doors at that time capable of movement in the direction in which the motor is operating.

3. The combination with a plurality of Warehouse doors of the roll-up type, of a single electric motor, mechanical transmission means in the nature of a drive shaft extending from said motor into proximity with each of said doors, individual mechanical connections associated with each of said doors for connecting and disconnecting that particular door with said transmission means. electrical control means for each individual door, each electrical control means including, first, means for operating said motor to open the door and simultaneously connecting said door to said transmission, second, means for operating said motor to close the door and simultaneously connecting said door to said transmission, and third, means for stopping said motor and simultaneously disconnecting said door from said transmission, said mechanical connections including brake means for holding said door against movement when it is not connected with said transmission; interlocking connections between the electrical control means for all said doors whereby when the motor is operating to open, any door not entirely open may be mechanically connected to said transmission, and whereby when the motor is operating to close, any door not entirely closed may be mechanically connected to said transmission; individual electrical limit means associated with each door and operative to disconnect said door mechanically at the end of its movement in either direction and to stop said motor when not required for operating some other door; and master switch means for operating said motor in either direction and simultaneously connecting to said transmission all doors at that time capable of movement in the direction in which the motor is operating; each individual electrical control means including momentary push button switches for up and down, and holding circuits for maintaining the operation as the push button switch is released; said holding circuits being controlled by said second means for stopping, which second means is also a push button switch.

4. The combination with a plurality of doors arranged in a row and generally parallel to the plane of the row, of a line shaft parallel to said row and extending past all said doors, a motor for driving said line shaft, individual electrical control means adjacent each door for connecting said door to said shaft and for energizing said motor, whereby said motor is inactive except when at least one of said doors is being operated, said control means including electric wiring between said motor and all said control meansarranged upon actuation of any door in one direction to render inoperative the control means for operating any other door in the opposite direction, but leaving operative the control means for operating any other door in the same direction, and a master switch at one point for operating all the doors simultaneously in either direction.

5. The Vcombination with a plurality of doors arranged in a row and generally parallel to the plane of the row, of a line shaft parallel to said row and extending past all said doors, a motor for driving said line shaft, and individual electrical control means adjacent each door for connecting said door to said shaft and for energizing said motor, lwhereby 1 said motor is inactive except when at least one of said doors is being operated, said control means including electric wiring between said motor and all said control means arranged upon action of any door in one direction to render inoperative the control means for opera-ting any other door in the opposite direction.

6. The combination with a plurality of doors arranged in a row and generally parallel to the plane of the row, of a line shaft parallel to said row and extending past all said doors, a motor for driving said line shaft, individual electrical control means adjacent each door for connecting said door to said shaft and for energizing said motor, whereby said motor is inactive except when at least one of Vsaid doors is being operated, and a master switch at one point for operating all the doors simultaneously in either direction.

7. The combination with a plurality of doors arranged in a row, of a line shaft extending past all said doors, a motor for driving said line shaft, individual electrical control means adjacent each door for connecting said door to said shaft and for energizing said motor, whereby said motor is inactive except when at least one of said doors is being operated, and a master switch at one point for operating all the doors simultaneously in either direction, each said individual control means rendering inoperative all other control means for operating any door in the opposite direction, but leaving operative the control means for operating any other door in the same direction.

8. The combination with a plurality of doors; of a line shaft; a reversible motor for driving said line shaft; individual means for connecting each door to said line shaft to be opened or closed according Vto the direction of motion of said line shaft; and manual control devices for each door including a first device for connecting said door and energizing said m-otor to open the door, a second device for connecting said door and energizing sai-d motor to close the door, and a third device for disconnecting said door and motor; said energizing devices being interconnected so thatactuation of any energizing device renders inoperative only those of the energizing devices of the other doors that would operate the motor in the other direction.

9. rIhe combination with Ia source of current and a single motor adapted to be actuated thereby in either direction, of a plurality of sets of controls, each set comprising three push button controls, one for driving the motor in one direcwhen the controls areactive, each active circuit being wired in series through the inactive contacts of each of the other push buttons, a movable door associated with each set of controls, and unitary means actuated by either the up or the down button of the associated set, for

mechanically connecting said door to said motor to be actuated thereby.

10. The combination with a source of current and a single motor adapted to be actuate-d thereby in either direction, of a plurality of movable doors, a plurality of sets of controls, each set associated with one of said doors and comprising three push button controls, one for driving the motor in one direction, identied as up, another ior driving the motor in the opposite direction, identified as down, and a third for stopping the motor, all three push button controls having contacts operative to complete a circuit when the controls are inactive, and the up and down controls having contacts operative to complete a circuit when the controls are active, each active circuit being wired in series through the inactive contacts of each of the other push buttons, each active circuit closing a relay switch, each relay switch closing additional circuits as follows, a rst circuit for mechanically connecting said m-otor with the associated door, a second sealing circuit parallelling that portion of the original active circuit completed by the push button switch, a third circuit actuating the motor in the desired direction, an-d a fourth circuit partly in parallel with the third circuit for disconnecting and rendering inoperative those of the active circuits of all other control sets, which would operate to run the motor in the opposite direction.

11. The combination with a source of current and a single motor adapted to be actuated thereby in either direction, of a plurality of movable doors, a plurality of sets of controls, each set associated with one of sai-d doors and comprising three push button controls, one for driving the motor in one direction, identied as up, another for driving the motor in the opposite direction, identiiied as down, and a third for stopping the motor, all three push button controls having contacts operative to complete a circuit when the controls are inactive, and the up and down controls having contacts operative to complete a circuit when the controls are active, each active circuit being wired in series through the inactive contacts of each of the other push buttons, each active circuit closing a relay switch, each relay switch closing additional circuits as follows, a rst circuit for mechanically connecting said motor with the associated door, a second sealing circuit parallelling that portion of the original active circuit completed by the push button switch, a third circuit actuating the motor in the desired direction, and a fourth circuit for disconnecting and rendering inoperative those rof the active circuits of all other control sets,

which would operate to run the motor in the opposite direction.

ANNA E. FOGAL, Executrz'x of the Estate of John E. W. Fogal,

Deceased.

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