Door operating mechanism for a business machine

Abstract: An opening (54) in a front panel (52) of an ATM normally permits a guide portion (60) of an internal mechanism (58) to protrude therethrough to receive customer cards. When the internal mechanism (58) of the ATM is withdrawn for servicing, the guide portion (60) is withdrawn from the opening (54). A vertically slidable door (2) is provided to close said opening (54) whenever said guide portion (60) is withdrawn, in order to prevent unauthorized access to the interior of the ATM. The door is operated by a mechanism including a pivotably mounted lever (4) one end of which is coupled to the door (2) and the other end of which has a follower roller (8) mounted thereon. Movement of the internal mechanism (58) between its servicing position and its normal operating position brings about a pivotal movement of the lever (4) by virtue of the roller (8) being engaged by an engaging member (62) secured to the internal mechanism (58).

Description: In a conventional automated teller machine (ATM) or the like, when paper supplies such as recording forms are to be placed within the machine for use, and when maintenance of the machine is required, such as the correction of jamming of bills or forms within the machine, a portion of the internal mechanism of the machine must be withdrawn rearwardly with respect to the external housing of the machine to enable such supply and repair (hereinafter referred to as rear maintenance) to take place. During normal operation of the machine, a part of the internal mechanism, e.g. a guide member, extends through an opening in the external housing of the machine and is accessible to a customer using the machine to enable card reading or passbook printing. As a result, when the mechanism is withdrawn, an opening is left in the external housing of the machine. It is known for an ATM to be disposed within a bank or other establishment in such a manner that the front part of the ATM faces into a room into which customers can freely enter, with the rear part of the ATM facing into another room within the bank where rear maintenance is performed. Accordingly, when an ATM is under rear maintenance, and the opening in the external housing is therefore exposed, it may happen that a customer will put his or her card, passbook or the like into the opening in the housing, not being aware that the ATM is under rear maintenance. After the card, passbook or the like has been put through the hole, it is difficult to retrieve, due to the restricted interior space of the machine, and there is danger of damaging the card or passbook in the course of removing it. In order to avoid the situation mentioned above, a shutter or door may be provided to close the opening in the housing when the mechanism is not extending therethrough. However the rear maintenance is usually performed with the machine in a power off state, so that the shutter or door cannot be electrically driven. From U.S. Patent No. 4612864 there is known an ATM having a door which is arranged to close automatically an opening in the fascia of the ATM when a chassis of the ATM is withdrawn for rear maintenance, and which is arranged to uncover automatically the opening when the chassis is reinserted into its normal operating position. The ATM includes a door operating mechanism incorporating a crank assembly for rotating the door inwardly about an axis for the purpose of moving the door from an open to a closed position; the crank assembly also serves to return the door to the open position. A disadvantage of this known door closing and opening mechanism is that constructional problems are encountered due to the need to ensure that the chassis does not interfere with the rotation of the door. The problems would be particularly acute in the case where a portion of the chassis projects through the opening when the chassis is in its normal operating position. It is an object of the invention to provide a business machine having a simple and compact means for closing automatically an aperture in a housing of the machine when an internal mechanism of the machine is moved from a normal operating machine to a position in which maintenance work can be carried out thereon. According to the invention there is provided a business machine comprising a mechanism mounted in a housing, said mechanism being movable between a first normal operating position in the housing, and a second position in which maintenance work can be carried out on said mechanism, wherein said mechanism has a projecting portion which extends through an aperture in said housing when said mechanism is in said first position and which is withdrawn from said aperture when said mechanism is moved from said first position to said second position, and in that said business machine includes a door which is associated with said aperture CHARACTERISED IN THAT said door is slidably movable in linear manner between a closed position in which said door closes said aperture, and an open position in which said door permits said projecting portion to extend through said aperture, and in that said business machine includes resilient means for urging said door to said closed position, operating means for moving said door from said closed position to said open position against the action of said resilient means, lever means pivotably mounted with respect to said housing and having a first portion coupled to said operating means, follower means mounted on a second portion of said lever means, and engaging means fixed relative to said mechanism and arranged to engage said follower means whereby when said mechanism is moved from said second position to said first position said engaging means brings about a pivotal movement of said lever means so as to cause said operating means to move said door from said closed position to said open position, said resilient means serving to move said door from said open position to said closed position when said mechanism is moved from said first position to said second position. One embodiment of the invention will now be described by way of example with reference to the accompanying drawings, in which: Fig. 1 is a partial perspective view, showing an exterior wall of an ATM, an internal mechanism having a projecting part which normally extends through an opening in the wall and a door in closed position covering said opening; Fig. 2 is a view similar to part of Fig. 1, showing a portion of the wall, with the door in open position and the projecting part of the internal mechanism depicted in chain outline extending through the opening; Figs. 3A, 3B, 3C and 3D are partial elevation views, showing the external wall, the door, the internal mechanism and the door operating mechanism in various positions; and Fig. 4 is a perspective view of two adjacent ATMS, in one of which the projecting part of the internal mechanism is extending through the opening in the external housing, and in the other of which the internal mechanism has been withdrawn so that the projecting part does not extend through the opening. Referring to the perspective view of Fig. 1, shown there is an ATM viewed from the interior thereof in a condition in which a module 58 of said machine is drawn backwards to the right as viewed in Fig. 1, out of its normal operating position, and a door or shutter 2 is in a completely closed position, thereby blocking access to an aperture 54 in a planar front panel 52 of a housing 50 (Fig. 4) of the ATM. The shutter 2 is adapted to close the aperture 54 in the front panel 52 during rear maintenance operations in which the module 58 is drawn out of the rear of the housing 50 as shown, for example, in the rightmost ATM of Fig. 4. In a similar perspective view of Fig. 2, the module 58 is omitted, and only a card insertion guide 60 of the module 58 is shown in chain outline, for convenience of description. When the ATM is in its normal operating position, the insertion guide 60 projects outwardly through the aperture 54, and a card or the like may be inserted therein by a customer. The shutter 2 is shown in a lower position in Fig. 2, so that the aperture 54 is completely open. Two vertical guides 14 and 16 are fixed to the front panel 52, and receive the shutter 2 to constrain its movement to linear sliding movement in a vertical direction in juxtaposition with the inner surface of the front panel 52. A projection 22 which extends from one side of the lower edge of the shutter 2 is connected to one end of a spring 18, the other end of which is connected to a stud 68 fixed to the front panel 52. Similarly, a second projection 24 which extends from the other side of the lower edge of the shutter 2 is connected to one end of a spring 20, the other end of which is connected to a stud 70 fixed to the front panel. When the springs 18 and 20 are in their normal unstretched condition, the shutter 2 is in its uppermost position so that the opening 54 is completely closed, as shown in Fig. 1. As shown in Figs. 1 and 2, a lever arm 4 is adapted to slide the shutter 2 downwards in order to expose the aperture 54. The arm 4 is pivotally supported on a pivot 11 which is provided adjacent one end of an arm supporting member 12 secured to the front panel 52. Movements of the arm are guided by an arm guide 42 which is provided on the supporting member 12. One end of a wire 6 is connected to an end 36 of the arm 4 via a spring 34. The wire extends over rollers 28, 30 and 32, and is connected at its other end to a projection 26 which is provided at approximately the centre of the lower edge of the shutter 2. Accordingly, when the arm 4 rotates in a clockwise direction as viewed in Figs. 1 and 2, the shutter 2 is pulled downwardly by the wire 6, against the force of the springs 18 and 20, and the aperture 54 is uncovered. At a lower end of the arm 4, there is mounted a roller 8 which is rotatable on a pivot 10 provided on the arm 4. The module 58 is fixed to a base 56 by an attaching device 64. The base 56 is slidably supported on a slider mechanism 67 (Fig. 4) together with the module 58 disposed thereon. An engagement member 62 is fixed to the base 56 and is adapted to come into engagement with the roller 8 when the base 56 is moved to the left as viewed in Fig. 1, so as to rotate the arm 4 in a clockwise direction. Opening and closing operations of the shutter 2 will next be described. As the base 56 moves to the left as viewed in Fig. 1 from the position shown therein, the engagement member 62 on the base 56 comes into engagement with the roller 8 of the arm 4. Then, as the base 56 moves further to the left, the roller 8 of the arm 4 is pushed to the left, and the arm 4 therefore is caused to rotate in a clockwise direction. As a result, the shutter 2 is pulled down by the wire 6 against the force of the springs 18 and 20. As the base 56 moves further to the left, the shutter is pulled completely down, and the insertion guide 60 is projected outwardly through the aperture 54, as shown in Fig. 2. The relationship among the engagement member 62, the arm 4 and the shutter 2, and the operation of these elements, will next be described with reference to Figs. 3A to 3D. These figures show side views illustrating relative positions of the various parts at various times, beginning with Fig. 3A, in which the insertion guide 60 projects outside of the front panel 52, and ending with Fig. 3D, in which the module 58 is drawn out to the rear and the shutter 2 completely closes the aperture 54. In the state shown in Fig. 3A, the shutter 2 is pulled down, the aperture 54 is completely open, and the insertion guide 60 projects to the outside through the aperture 54. When the module 58 is drawn out to the rear for maintenance, the module 58 gradually moves to the right, and the insertion guide 60 moves to the rear together with the the module 58. During the initial movement of the module 58 from the position shown in Fig. 3A to the position shown in Fig. 3B, the roller 8 of the arm 4 rolls on the upper surface 66 of the engagement member 62, so that rotation of the arm 4 is prevented and the shutter 2 is therefore maintained in the state in which it is completely pulled down, and is inoperative to cover the aperture 54. When the module 58 moves to the position shown in Fig. 3B, the roller 8 of the arm 4 reaches an end of the engagement member 62, the insertion guide 60 at this time being fully withdrawn from the aperture 54. As the module 58 is moved further to the right, the roller 8 of the arm 4 rolls down from the upper surface 66 of the engagement member 62 along a side 69 of the member 62, as shown in Fig. 3C, the side 69 being disposed transversely with respect to the surface 66. As the roller 8 rolls down the side 69, the arm 4 rotates in a counterclockwise direction and the shutter 2 is pulled up by the springs 18 and 20. As the module 58 moves still further to the right, the roller 8 moves out of engagement with the engagement member 62, rotation of the arm 4 being stopped by a stopper 44 which is provided on the arm guide 42. In this state, the shutter 2 is completely pulled up and the aperture 54 is completely closed. Even if the module 58 moves slightly to the left in this state, the arm 4 will not rotate and the shutter 2 will not move, as shown in Fig. 3D. When maintenance at the rear of the machine has been completed, the module 58 is pushed back to the left, as viewed in Figs. 3A to 3D inclusive, into operative position, in which it is shown in Fig. 3A. When the side 69 of the engagement member 62 comes into contact with the roller 8 of the arm 4, the arm 4 is rotated in a clockwise direction by the engagement member 62 in accordance with the movement of the module, and the shutter 2 is gradually pulled down, as shown in Fig. 3C, to the position shown in Fig. 3B, in which the aperture 54 is completely open. Movement of the module 58 to the left, from the position shown in Fig. 3B to the position shown in Fig. 3A, does not result in rotation of the arm 4 because the roller 8 moves along the horizontal surface 66 of the engagement member 62. Therefore the aperture 54 is kept open, the insertion guide 60 may project completely through the aperture 54 to the outside, and the module will halt its movement after it reaches the position shown in Fig. 3A.

Claims: A business machine comprising a mechanism (56,58) mounted in a housing (50), said mechanism being movable between a first normal operating position in the housing, and a second position in which maintenance work can be carried out on said mechanism, wherein said mechanism has a projecting portion (60) which extends through an aperture (54) in said housing when said mechanism is in said first position and which is withdrawn from said aperture when said mechanism is moved from said first position to said second position, and in that said business machine includes a door (2) which is associated with said aperture (54) CHARACTERISED IN THAT said door is slidably movable in linear manner between a closed position in which said door closes said aperture, and an open position in which said door permits said projecting portion (60) to extend through said aperture, and in that said business machine includes resilient means (18,20) for urging said door to said closed position, operating means (6) for moving said door from said closed position to said open position against the action of said resilient means, lever means (4) pivotably mounted with respect to said housing (50) and having a first portion (36) coupled to said operating means (6), follower means (8) mounted on a second portion (10) of said lever means, and engaging means (62) fixed relative to said mechanism (56,58) and arranged to engage said follower means (8) whereby when said mechanism is moved from said second position to said first position said engaging means (62) brings about a pivotal movement of said lever means (4) so as to cause said operating means (6) to move said door (2) from said closed position to said open position, said resilient means (18,20) serving to move said door from said open position to said closed position when said mechanism (56,58) is moved from said first position to said second position. A business machine according to claim 1, characterized in that said engaging means (62) has a planar surface (66) arranged to be in engagement with said follower means (8) during a final portion of a movement of said mechanism (56,58) from said second position to said first position during which said projecting portion (60) moves from a position in which it is fully withdrawn from said aperture (54) to a position in which it fully projects through said aperture, said planar surface (66) being parallel to the direction of said movement of said mechanism (56,58) whereby said door (2) is maintained in said open position during this time. A business machine according to claim 2, characterized in that said follower means comprises a roller (8) rotatably mounted on said second portion (10) of said lever means (4). A business machine according to either claim 2 or claim 3, characterized in that said engaging means (62) includes a transverse portion (69) which is disposed transversely with respect to said planar surface (66) and which is arranged to engage with said follower means (8) for the purpose of bringing about a pivotal movement of said lever means (4). A business machine according to claim 4, characterized in that said engaging means (62) is out of engagement with said follower means (8) when said mechanism (56,58) is in said second position, stop means (44) secured to said housing (50) serving to limit pivotal movement of said lever means (4) when said mechanism is in said second position. A business machine according to any one of the preceding claims, characterized by a pair of parallel tracks (14,16) located adjacent opposite edges of said aperture (54) for mounting said door (2) for linear sliding movement in juxtaposition with the inner surface of a planar portion (52) of said housing (50). A business machine according to any one of the preceding claims, characterized in that said operating means includes a wire (6) which extends from said first portion (36) of said lever means (4) to said door (2), and a plurality of pulleys (28,30,32) mounted on said housing (50) for determining the path of said wire.

Inventors: ISOZAKI HIROMI, ITO MASAKAZU, ISOZAKI, HIROMI, ITO, MASAKAZU
Applicants: NCR INT INC, NCR INTERNATIONAL INC.
Application year: 1989
Main classification: G07F7
IPC codes: G07F19, G07F7, G07D9