CA1263037A - Lock actuator assembly and card reader - Google Patents

Abstract

Abstract of the Disclosure A card reader arrangement in a housing for an actuator assembly including an outer casing, the card reader arrangement being integral with the housing, includes a covered slot extending downwardly from a top surface of the outer casing. An opened window is disposed below and in communication with the covered slot, Thus, when a card is inserted in the slot it will extend through the slot and into the open window.

Description

.f,~

This application is a divisional of Application Ser. No. 496,229, filed November 26, 1985.
The invention relates to an actuator assembly mechanism and a housing therefor.
In one aspect of the invention, the actuator assembly mechanism includes an input disc and an output disc, the output disc being rotatable only once, when the assembly is actuated, within a given time span, and wherein the output disc is not rotatable if the input disc is not rotated within the time span.
In another aspect of the invention, the actuator assembly mechanism housing has included integral therewith a card reader arrangement.
- Our co-pending application Ser. No. 456,106, filed .
June 7, 1984, describes an actuator assembly mechanism of the above general description. The present arrangement is an alternative to our earlier arrangement.
:
It is also known in the art to use card reader arrangements for actuating actuator assembly mechanisms.
One such card reader is shown in U. S. Patent 4,488,036, ;~ Butts, December 11, 19~4. Although Butts attacks the problem of coins entering slot 18, he does not even con-sider the problem of liquids, or other foreign objects, falling into the slot.
It is therefore an object of the invention to provide an actuator assembiy mechanism which meets the above general description but which does so with an arrangement alternative to the arrangement taught in our co-pending application.
It is a further object of the invention to provide a card reader arrangement which is integral with the actuator mechanism housing and which is designed to perm:it easy removal of foreign objects from the slot thereof.

~3~3~

In accordance with the invention there is provided an actuator assembly mechanism comprising a clutch mechanism having an input disc and an output aisc and means for rotat-ing the input disc. ~eans are provided for preventing rotation of the output disc with the input disc when the assembly is in a rest condition, and for permitting a rotation transmitting connection between the input disc and the output disc when the assembly is in an actuated condi-tion. Means for automatically returning the assembly from the actuated condition to the rest condition: ~1) if the first input disc is rotated within a given time delay, upon the rotation; or, (2) if the first disc is not rotated within the given time delay, upon e~spiration of the time delay. Thus, the second output disc can be rotated only once within the time delay, and the second disc is not rotatable if the first dlsc is not rotated within the time delay. The means for preventing rotation of the output disc with the input disc consists of an opening in the output disc and a solenoid means having a shaft member, the sole-noid means being positioned relative to the output discsuch that the shaft member is adapted to extend into the opening in the output disc, as well as a system for driving the solenoid. Thus, the output disc is fixed in position to thereby prevent rotation of the output disc with the .
nput disc.
The actuator assembly is housed in an outer casing, and the housing includes, integral therewith a card reader arrangement which includes a bottom open window.
A security arrangement for mounting a rear door handle consists of a floating collar having an e~ternal thread for mating with an internal thread on the hand]er the threads being tightenable and loosenable only by a special tool. Alternatively, the rear door handle can be fixed in place by a C-clip.
The invention will be better understood by an examina-tion of the following description together with the accompanying drawings in which:
FIGURE 1 is a side view of an actuator assembly mechanism, in accordance with the invention, shown in its rest condition with a card inserted in the slot of the card reader, portions thereof being shown in section;
FIGURE lA is a portion of Figure 1 showing the actuator assembly mechanism in its actuated condition;
FIGURE 2 is a rear view of Figure l;
FIGURE 3 is an exploded perspective view of the clutch mechanism;
: FIGURE 4 illustrates the facing surfaces of the input and output discs of the clutch mechanism;
FIGURE 5 lllustrates means for sensing that the handle has been turned;
FIGURE 6 is an operational flow chart for process control for the inventive actuator assembly mechanism;
FIGURE 6A is a purely schematic illustration of the physical process which takes place in the operational chart of Figure 6;
FIGURE 7 is a partial view of Figure 2 in section showing how the override mechanism operates;

~6~

FIGURE 8 is a perspective view of the housing;
FIGURE 9 is a horizontal cross section of a rear handle mounting assembly;
FIGURE 10 illustxates a special tool used with the Figure 9 handle assembly; and FIGURE 11 is a vertical cross section of an alter-nate rear handle mounting assernbly.
Referring now to Figures 1 and 2, the actuator assembly mechanism includes a clutch mechanism, illustrated generally at 1, and means, illustra-ted generally at 3, for preventing or permitting a rotation transmitting connection of the clutch ~echanism. The actuator assembly mechanism is housed in a housing 5, mounted onthe ~ront (outside) of a door and having an opening 7 therethrough at the front end of the assembly. A knob, or handle, hub 9, which is spring loaded, as will be shown below, to return to its initial position, extends through the opening and is in rotation :
transmitting communication with~a connecting member 11 at the input of the clutch.
A shaft receiving member 13 is disposed at the output side of theclutch mechanism. The clutch mechanlsm is housed in a clutch cover 15.
Referring to Figure 3, the clutch member includes an input disc 17, which is connected to the input connecting member 11, for rotation therewith, and an output disc 19, ; which is connected to the shaft receiving member 13 for rotation therewith. The shaft receiving member 13 receives a drive shaft 14. The connecting member 11 is connected to hub 9 for rotation therewith so that the input disc 17 rotates with the rotation of hub 9.

~3~3~

As the facing surfaces of both input and output discs are identical, only the facing surface of the output disc is shown in Figure ~ to illustrate the facing surfaces of both input and output discs.
The facing surfaces of both the input and output discs include diametrically opposed abutments 21 having bevelled surfaces 23 at their terminating edges. The abutments are disposed on, and rise above, a lower surface

2~ and are preferably formed integrally with the lower surface.
Returning to Figure 3, disposed in the clutch cover is a spring means 25 which urges the output disc against the input disc. Closing slot means comprising, for example, a slot 27 is disposed on the upper peripheral surface of the output disc 19 as can also be seen in Figures 1 and 2.
The clutch mechanism operates in a manner known in the art, namely, with the spring 25 urging the output disc against the input disc, and with the abutments of the input disc being arranged to be located on the lower surfaces ofthe output disc, and vice-versa, when the input disc is rotated, the output d]sc will also rotate. How-ever,~if the output disc is held against rotation, for example, by applying the fixed means in the closing slot 27 thereof, rotation ofthe output dlsc will not be possible even when the input disc is rotated, whereby to prevent a rotation transmitting connection of the clutch. Instead, the bevelled surfaces of the input disc will cam with the bevelled suxfaces of the output disc to push the OUtpllt disc rearwardly against the force of spring 25. Thusl the rotation of the input disc will still be possible, however, $~

the rotation of the input disc will, in this condition, not be transmitted to the outpuk disc.
Thus, means for permittiny a rotation transmitting connection of the clu-tch comprises a means for removing the fixed means from the closing slot 27.
As above-mentioned, the means for permitting a rotation transmitting connection of the clutch is illus-trated generally at 3 and comprises a solenoid 29 (see Figures 1, 2 and 7~ mounted on a solenoid mounting plate l~ 31. Extending downwardly from the solenoid is a solenoid shaft 33 which is attached to a limiting disc 35 at the bottom end thereof, and whose top end abuts spring member 30.
Extending downwardly and centrally of the limiting disc 35 is a blocking pin 37. As can be seen in Figures 1 and Z, the blocking pin 37 will extend into the slot 27 when the assembly is in its rest condition. With the bloc~ing pin in the slot 27, the output disc is held against rotation, so that rotation of the input disc will not be transmitted to the output disc.
The solenoid is contained in a solenoid housing 39, and the blocking pin 37 extends -through a wear-resistant reinforcement bushing al in the housing 39. The wear-resistant bushing accurately guides the travel of the pin 37 and prevents wear resulting from such travel, and pro-:
;~ vides protection against material deformation from lateral forces of the pin.
The clutch mechanism and means for effecting rotation transmitting connectlon are mounted on a mounting plate 43.
As in the above-mentioned co-pending application, it is desirable to detect rotation of the handle (connected ~63~3~7 to the hub 9) in order -to signal to the processor that the solenoid should be activated as will be seen below. ~eans for detecting handle rotation is illustrated generally at 45 in Figures 1 and 5 and includes a stop plate 47.
Referring to Figure 5, one end 60 of the stop plate 47 abuts against a switch arrangement 49. A retain-ing ring 51 is provided to prevent hub 9 from sliding out of the housing 5.
A spring means 53 has one end connected to a fixed point 55 on casing 5 and the other end connected to point 57 on the stop plate. Stop plate limiter 59, which is part of casing 5, limits the rotary motion of the stop plate and thereby the rotary motion of the hub 9.
In the illustrated embodiment, the hub 9 is rotated in a clockwise direction (Figure 5) and the stop plate 47 is rotated with it. When the hub 9 is released, the spring ; ~ means 53 will cause the stop plate 47 to rotate in a counter-clockwise direction (Figure 5) until the edge 60 of the stop plate abuts against the stop-plate limitèr 59 and thereby against switch arrangement 49.
In the illustrated embodiment, switch 49 is of that ]cind which is closed in its normal condition, i.e., t must be pressed to be opened. With stop plate 47 in its rest conditlon, as illustrated in Figure 5, end 60 of the stop~plate lS pressed up against the switch 49 so that the switch 49 is open. When the hub 9, and therefore stop plate 47, is rotated in the clockwise direction, as soon as edge 60 releases the switch 49 (which happens when handle is even slightly rotated, i.e., between 1 and 5), switch 49 will change state, i.e., it will assume its normal condition and will therefore be closed, i.e., the circuit oE which it ~J~

is a part will be complete. This circuit will then provide a signal that the handle has been rotated. When hub 9 is released, plate 47 will return to the position shown in Figure 5, that is, with the end 60 of plate 47 abutting -against the switch 49, and the switch 49 will again be open.
In operation, the mechanism works as follows:
In order to change the assembly from its rest condition to its actuated condition, the solenoid 29 must be actuated. The solenoid can be actuated by means well known in the art, for example, a keyed mechanism, or an electronic or mechanical numerical combination means, or other means well known in the art. In the present appli-cation, it is contemplated to use a card reader arrangement which will read a magnetically encoded card.
As will be seen below (with reference to Figure 6), if the card includes a valid activation code, then as soon as the handle (connected to hub 9) is rotated in a clockwise direction, power will be provided to the solenoid to actuate 20 ~ ~it.
When the solenoid is actuated, the solenoid shaft 33 is lifted upwardly, against the force of spring member 30, llfting with it both the limiting disc 35 and the block-ing pin 37 so that the blocking pin is moved out of the slot 27 as shown in Figure lA. With pin 37 out of slot 27, there is permitted a rotation transmitting connection between the hub 9 andthe output shaft 14. Accordingly, 14 will rotate ; ~ when 9 is rotated and when the actuating assembly is in its , ~
; actuated condition.

~ Power is applied to the solenoid and then removed a short time (1/3 sec.) later. However, by that time~ the $~3~37 rotation of the handle will have caused rotation of the out-put disc. Thus, when the blocking pin 37 drops because power is removed from the solenoid, it will fall onto the outer surface of the output disc, and it will loosely ride on this outer surface as long as the handle is out of its normal position. When the handle is returned to its rest position, returning the output disc to its rest position, the blocking pin 37 will fall into slot 27 of the output disc. Spring 30 is provided to provide a downward push on the shaft 33 should gravity not provide sufficient pull to pulI the shaft 33 downwardly.
The hub 9 is connected to, for example, a door knob lever handle or the like for rotation, and the shaft 14 can comprise the shaft of, for example, a latch mechanism or the like to retract the latch of a lock as is well known in the art. It will be seen that the assembly is automatic-ally returned to the rest condition from the actuated conditon either after a single opening or after a predeter-mlned tlme delay.
The mechanism is under the control of an electronic processor which receives data both from the card reader and from the swit h 49. Although the processor will have ;~ ~ severaI other functlons, we wiIl consider here only its operation in providing power to the solenoid at the approp-riate time.
Figure 6 illustrates an operational flow chart of the software which drives the processor. ~Each cycle of the processor starts, as is well known, with a BEGIN step. The BEGIN step in this case would be actuated by the insertion of a coded card into the card reader arrangement, which insertion is sensed by a card-in sensor means 90 (see g _ ~6~

Figure 1), i.e., a switch which is tripped hy the carcl as it is being inserted. The tripping of the switch activates both the microprocessor and the reader, which would be normally unactivated, for their respective ~unctions. The sensor means 19 also senses when the card is remo~ed from the slot whereby to ensure that the card is not accidentally left in the slot after the door is opened.
The processor would then read the code on the card and determine whether or not this is a valid code.
If it is not a valid code, then the program skips to the END, thus avoiding actuation of the assembly, and is ready for the beginning o~ a new cycle.
If the code is valid, then the processor initiates a security timing period.
In one embodiment, if it i9 desired to prohibit actuation of the assembly if the handle is turned before there is an indication that the handle should be turned, the switch 49 is checked to determine whether the handle is in the rest position. If it is not, then the program wlll skip to the END thus prohibiting the actuation of the assembly.
If the handle is in its rest position, then an indicatorj such as indicator 79 in Figure 8, is turned on indicating to the user that he can now rotate the handle.
The processor now senses alternately in cycles :: ~
two conditions, namely, whether the security timing period has elapsed and whether the handle has been rotated. If, in any one of the cycles, the security timing period has not elapsed, and the handle has been rotated, then the solenoid is activated for a predetermined periodr e.g., 1/3 sec. The cycle is then completed and the processor'is ready to begln a new cycle.
If, on the other hand, the security timing period elapses without the handle being rotated, then the program will once again skip to the END and the actuator mechanism will not be activated.
Figure 6A is a purely schematic illustration of the physical process whic~ takes place. As can be seen, the electronic processor receives input from s~itch 49, card-in sensor 90, and the card reader magnetic head 89 (see Figure 1). It provides an output to the power supply to provide power to activate the solenoid under the appropriate conditions.
In some instances, it may be necessary to override the rest condition of the ~ctùator assembly by purely mechanical means, for example, in the event of battery fallure. For this purpose, override mechanism, illustrated generally at 61 in Figures 2 and 7 is provided. As seen in these Figures, the override mechanism comprises a cylindrlcal core 63. In the illustrated embodiment, as the override mechanism has to extend for a distance greater than the distance o~ the cylindrlcal core itself, there is provlded a cylindrical core adapter 65 and a cylindrical core extension member 67 connected to the adapter 65 whereby the extension 67 will rotate with the cylindrical core 63. It is of course understood that the adapter 65 and the extension 67 are requlred only when the override m chanism must extend for a distance greater than the distance of the core 63 itself.
Disposed at the free end of the extension 67 is an override cam member 69. Extending into the solenoid housing at right angles to the extension member 67 is an $~3~

override plunger 71. The plunger 71 has a camming end 73 and a disc end 75. Spring means 77 has one end thereof abutting against the disc end 75 and the other end abutting against a stopping edge of the solenoid housin~.
In operation, the override mechanism works as follows:
When the core 63 is rotated, extension member 67 will rotate with it and cam 69 will abut against the plunger 71 and ~orce the plunger inwardly, that is, to the left in 1~ Figure 7. The camming end of the plunger will act against the limiting disc 35 to raise thelimiting disc and to there-by lift the blocking pin 37 out of the slot 27 against the action of spring 30. Thus, the actuator assembly will assume the position shown in Figure lA, that is, the actuated condition.
When the core 63 is again rotated to return the cam to the position shown in Figures 1 and 7, spring 75 will force plunger 71 rearwardly, that is, to the right in Figure 7 so that it will return to the position illustrated in Figure 7. It will of course be appreciated that the core 63 can rotate only by use of an appropriate key.
Referring now to Figures 1 and 8, the housing for the mechanism is shownto include the casing 5 and a handle 6 which is connected with the hub 9 as is well known.
The card reader assembly, illustrated generally at 81, includes a slot 83 for receiving a card 85. The card reader arrangement also includes a window 87 which is in communication with the slot 83. The inclusion of the window permits a user to see that the card has been inserted as far as it should go. It also makes it easy and conven-ient to clean the arrangement and especially to dislodge ~ 12 -~L263(~
any foreign objects which might get stuck in the slot.
The card reader assembly also includes a magnetic head 89 for reading the code on the card as is also well known in the art, and a card-in sensor means 90. The sensor means 90 is located so that the card activates the sensor 90 before or at the same time that it reaches the head 89. The magnetic head is mounted on a spring 91 which biases it in the direction of the card so that there will be good physical contact between the magnetic head and the coded portion of the card.
In operation, a coded card is inserted in the slot and the code on the card is read by the magnetic head and provided to the processor as illustrated schematically in ~; Figure 6A.
Considering now the rear door handle, attention is directed to Figure 9 which illustrates a security arrange-; ment for mounting such a handle. As can be seen, the rear door handle is mounted adjacent the rear tinside) surface 93 of the door. It includes a spring-loaded square shaft 95, a stop plate 97, a re~urn spring 98 and a rosette 99 The rosette, stop plate and return spring are provided so that handles of the type illustrated in Figure 8 will, upon release, move to their rest (horizontal) position.
Mounted on the sha~t 95 is a flange lO0 with a floating collar lOl which has external threads 103. The floating collar, rosette and shaft 95 arrangement are encased by casing 105.
The handle 107 has internal threads lO9 which mate with the external threads 103 whereby ~o ~ount the handle on the floating collar.

~ ~6 ;3~ ~ 7 A portion 111 of t~ç floating Gollar 101, which is formed integrally with the floating collar, has its outer periphery notched with equally spaced notches. By using a tool such as the tool 113 illustrated in FicJure 10, and having the protuberances 115 engage different ones of the notches, the floating collar can be rotated about the axle 95 as will be further discussed below. Plastic bearing 117 is provided between the flange 100 and the central opening of the rosette to ease movement of the flange 100 relative to the rosette.
The shaft 95 is square in cross-section, and the handle includes an opening 119 which has a cross-sectional shape similar to the cross-sectional shape of the floating shaft. Because both cross-sectional shapes are discontinuous, when the handle 107 is rotated, the shaft 95 wlll rotate with ito Pin 121 extends from opposlng sldes of the shaft 95 to prevent the shat 95 from falllng out of the flange 100. In order to permit the shaft 95 to move in the opening 119, slots 123 are formed on either side of the opening to accommodate both ends of the pin 121.
` ~ Spring 125, which abuts, at one end thereo~, against the flange 100, and, the other end thereofj against C-clip 126, maintains the shaft 95 in an extended position to extend into ahub in a lockset as known in the art.
As is seen, the casing 105 includes a cavity 127, which ismounted in recess 128 in the door, with a cover plate 129. An opening 131 is included in the cavity.
The plate 129 is mounted on the casing by inserting one end thereof into the slotted opening 133. At the other end, a post 135 is mounted on a surface of the indented :a~6;3~37 portion. A hook member 137 ~ngages the post 135 to lock the cover plate 129 onto the casing when the hook member is rotated by a key which is received in a key receptacle 139.
In operation, to mount the handle, the asisembly including the rosette, the floating collar, flange, stop plate, return spring, and the shaft is mounted on the door.
The casing 105 is placed on the door, and then the handle is placed over the Eloating collar so that teeth 109 are close to teeth 103. With cover 129 removed, tool 113 is inserted through opening 131 to engage the notches on portion 111 of floating collar 101. The tool is rotatecl to thereby rotate the floating collar so that the screw threads 103 will mesh with and engage screw threads 109.
This is continued until the floating collar can no longer be rotated, i.e., the handle is fully mounted on the float-ing collar. The shaft 95 will, of course, extend into the opening 119.
The cover plate 129 is then placed in position with one end in the slotted opening 133, and the key is inserted in receptacle 139 and rotated so that the hook 137 will engage the post 135. With the cover plate 129 in its mounted position, the handle can no longer be removed from the collar as access to opening 131 is blocked by the cover plate 129.

If it is desired to remove the handle from the :: :
collari cover plate 129 is removed by first rotating the key in receptacle 139 so that the hook 137 no longer engages the post 135. The other end is then removed ~rom the slotted opening 133 50 that there i5 once again access to the opening 131. The tool is inserted through the opening,

3~

and the floating collar is rotated to unscrew the collar from the handle.
C-clip 140 is provided to hold together the j assembly of the flange, floating collar, stop plate, the rekurn spring and the rosette.
The opening in the cavity 127 can be used to store batteries to provide power to the actuating assembly and the processor.
An alternate arrangement is illustrated in Figure 11. The embodiment illustrated in E'igure 11 also includes a casing 105. Although not shown in Figure 11, the casing 105 of the Figure 11 embodiment includes a cavity 127 having : an opening 131. Access to the opening can be prevented by also providing a cover plate 129.
.
The Figure 11 embodiment also includes a spring-loaded shaft 195 which is square in its cross-sectional shape, and the shaft is inserted in a square opening in the handle 207 so that the shaft will rotate with the handle.
Spring 225 maintains the shaft in its fully extended position as shown in Figure 11.

:
However, the member 201 in the Figure 11 embodiment is not a floating collar but is, rather, formed integrally with the handle 207. Collar 203, formed integrally with:
roaette 199 embraces the member 2Ql, and plastic bearings 209 and 211 ease the movement of the member 201 relative to the collar 2Q3. C-clip 205, which abuts against the bottom surface of the collar 203, maintains the handle fixed in position as shown in Figure 11. The C-clip can be mounted onto the member 201 by a special tool through the opening 131 in the caslng~ and an aligned opening in the rosette (not shown), and the C-clip can also be removed from its :~2~3~3~æ

position by use of a suitable, but different, tool through the same opening. Accordingly, once again, it would be necessary to remove the cover plate 129, using a k$y, before the handle 207 can be removed.
Posts 213 extend through an opening in the lock set and mate with screws 215 which are inserted through an outer surface of the front of the door.
A similar arrangement would be included in the Figure 9 embodiment.
The security arrangements illustrated in Figures 9 and 11 can be used in assoclation with the assembly as illustrated in Figures l et seq. of the present application.
Alternatively, these security arrangements could be used in association with other assemblies as appropriate.
Although a particular embodiment has been above-described, this was for the purpose of illustrating, but not limiting, the invention. Various modifications, which may come to the mind of one skilled in the art, are within the scope of the invention as defined in the appended claims.

~ ~ ,

Claims (2)

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:-

1. A housing for an actuator assembly mechanism com-prising an outer casing, said housing including, integral therewith, a card reader arrangement, said card reader arrangement comprising:
a covered slot extending downwardly from a top surface of said outer casing;
an opened window disposed below and in communi-cation with said covered slot;
whereby, when a card is inserted in said slot it will extend through said slot and into said open window.

2. A housing as defined in claim 1 wherein said card reader arrangement includes means for reading coded messages on an encoded card inserted into said slot;
said means for reading being located behind said slot.