Patent Publication Number: US-2009218361-A1

Title: Mechanism For Opening A Cover From Two Opposite Sides

Description:
The invention relates to an opening mechanism for opening a cover from two opposite sides, which is particularly suitable for use for a centre console of a motor vehicle. 
     A detachable double-hinge device for a console box is known from EP 0 494 496 B1. 
     A lid opening and closing device is known from EP 0 562 244 B1, which is configured in such a manner that a lid body of a box body can be opened and closed from either the right or the left side. 
     An opening mechanism is known from JP 03189249 with which a lid can be opened towards two sides. In this case, the pivot axes are each divided into two. For opening the lid on one side the pivot axis parts of the respectively other side are pressed away from one another in a wedge shape to insert the ends of the pivot axis parts in corresponding recesses of the container and form an effective pivot axis. 
     Known from DE 101 51 704 C2 is an opening mechanism for opening a lid towards two sides, in which the pivot axles are each divided into two. The pivot axles are driven apart from one another or towards one another, whereby a likewise two-part actuating element running transversely thereto has guide tracks at its ends in which projections from respective ends of the pivot axle parts facing one another are guided in such a manner that the pivot axle parts of one side are driven apart from one another whilst the pivot axle parts of the other side are driven towards one another. The two parts of the actuating element are pre-stressed in a driven-apart position by means of a spring. 
     A similarly acting mechanism is disclosed in U.S. Pat. No. 5,931,336. 
     The object of the invention is to provide an opening mechanism for opening a cover from two opposite sides which has a simple structure and ensures a reliable operating mode. 
     This object is achieved with the features of claim  1 . Further embodiments are specified in the dependent claims. 
     According to the invention, an opening mechanism is provided for opening a cover element located on a console alternatively (optionally) about a first cover swivel pin or about a second cover swivel pin, each of which is formed by a front and a rear swivel pin element that can be moved relative to one another between a retracted and a deployed position, comprising a first actuating device with a first actuating element and a second actuating device with a second actuating element, each of said actuating devices being mechanically coupled to the front and the rear swivel pin element of the associated first swivel pin or the second swivel pin via a first or second displacing member in such a manner that the front and the rear swivel pin element of the associated swivel pin can be moved, by actuating one of the actuating elements, from a closed position in which pin elements of the swivel pin elements are connected to a locking device of the console, into an open position in which the pin elements of the same locking device of the console are deployed such that the first swivel pin or the second swivel pin can act as a swivel pin so as to open the cover, 
     wherein the first actuating element is connected to a displaceable first transmitting element having a transmitting section and the second actuating element is connected to a second transmitting element having a transmitting section, wherein the transmitting section of the first transmitting element cooperates positively with a corresponding transmitting section of the first displacing member associated therewith and the transmitting section of the second transmitting element cooperates positively with a corresponding transmitting section of the second displacing member associated therewith in order to move the swivel pin elements between their closed and open positions; 
     wherein the first and the second transmitting element of the actuating device can be moved towards one another and each of the transmitting elements is provided with at least two catch recesses or engagement devices that are placed one behind the other in the direction of displacement, wherein the transmitting elements can be locked in a closed position and an open position of each transmitting element by inserting the blocking element into one respective catch recess of the first and the second transmitting element. 
     In a preferred embodiment, the first and the second transmitting element of the actuating device can be displaced into one another in sections. At the same time the catch recesses can be formed as openings or grooves so that in two different positions of the transmitting element, the blocking element can be inserted into one catch recess of one transmitting element and one catch recess of the other transmitting element so that the closed position and the open position of each transmitting element can be locked. 
     The transmitting sections can be toothed segments. 
     In each of the embodiments, each of the displacing members can comprise a transmitting element which is rotatably mounted and/or which is configured as a rotating ring for converting the movement of the transmitting elements of the actuating device into a rotary movement. In this case, in particular the circumferential movement of one section of each of the transmitting elements can be coupled mechanically or electrically to the displacement movement of the swivel pin elements. In particular the transmitting elements can be rotatably mounted on a mounting device located on the plane of symmetry of the opening mechanism. 
     The cover opening mechanism can be configured in such a manner 
     that an arm is rigidly arranged on each transmitting element, said arm being connected via a joint to the respective second swivel pin element, 
     that a coupling lever is coupled at a first bearing point on the second swivel pin element via a first joint, 
     that the coupling lever is pivotally mounted on a mounting device located on the cover D, 
     that the coupling lever is connected to the respective first swivel pin element via a second joint at a second bearing position located opposite to the first bearing position. 
     The displacing members can be formed identically. 
     The joints of the displacing member are formed as non-destructively non-detachable connections. 
     According to the invention, an opening mechanism is also provided for opening a cover element located on a console alternatively about a first cover swivel pin or about a second cover swivel pin, each of which is formed by a front and a rear swivel pin element that can be moved relative to one another between a retracted and a deployed position, comprising a first actuating device with a first actuating element and a second actuating device with a second actuating element, each of said actuating devices being mechanically coupled to the front and the rear swivel pin element of the associated first swivel pin or the second swivel pin via a first or second displacing member in such a manner that the front and the rear swivel pin element of the associated swivel pin can be moved, by actuating one of the actuating elements, from a closed position in which pin elements of the swivel pin elements are connected to a locking device of the console, into an open position in which the pin elements of the same locking device of the console are deployed such that the first swivel pin or the second swivel pin can act as a swivel pin so as to open the cover, wherein each of the displacing members comprises a transmitting element which is rotatably mounted and/or which is configured as a rotating ring for converting the movement of the transmitting elements of the actuating device into a rotary movement. 
     In this case, the transmitting element configured as a rotating ring can be rotatably mounted on the same one mounting device located on the plane of symmetry of the opening mechanism. In particular, 
     an arm is rigidly arranged on each transmitting element, said arm being connected via a joint to the respective second swivel pin element, 
     a coupling lever is coupled at a first bearing point on the second swivel pin element via a first joint, 
     the coupling lever is pivotally mounted on a mounting device located on the cover, 
     the coupling lever is connected to the respective first swivel pin element via a second joint at a second bearing position located opposite to the first bearing position. 
     The displacing members can be formed identically. 
     The joints of the displacing member can be formed as non-destructively non-detachable connections. 
    
    
     
       The invention is described in detail hereinafter with reference to the appended figures, which show: 
         FIG. 1  is a perspective view of the cover opening mechanism according to a preferred embodiment of the invention, viewed obliquely from the front and above, with a coordinate system wherein the cover opening mechanism is inserted in a cover element whose cover has been removed from the cover element; 
         FIG. 2  shows a top view of the cover opening mechanism according to  FIG. 1 ; 
         FIG. 3  shows a perspective view of the cover opening mechanism according to  FIG. 1  viewed obliquely from behind and above; 
         FIG. 4  shows an exploded view of two parts for forming the double-hinge device as a component of the cover opening mechanism according to the embodiment shown in  FIG. 1 ; 
         FIG. 5  shows the two parts for forming the double-hinge device according to  FIG. 1  placed one above the other; 
         FIG. 6  shows a view of the embodiment of the cover opening mechanism according to the invention from  FIG. 1  viewed obliquely from behind and above, wherein one of the two parts of the double-hinge device is shown raised in an exploded view; 
         FIG. 7  shows a perspective view of the two parts for forming the double-hinge device according to  FIG. 5  placed one another the other together with an embodiment of the actuating device for actuating the double-hinge device viewed obliquely from above and from the front, wherein the cover element is not shown; 
         FIG. 8  shows a perspective view of the two parts for forming the double-hinge device and the actuating device according to  FIG. 7  viewed obliquely from below and from behind; 
         FIG. 9  shows a perspective view of the actuating device according to  FIG. 7  viewed obliquely from behind and below; 
         FIG. 10  shows the cover element with the opening mechanism viewed from below. 
     
    
    
     For the description of the invention, reference is made to a reference coordinate system having an X, Y and Z axis. The cover opening mechanism  1  according to the invention is provided for opening a cover element or a cover D which is also in general a receiving part which can be used for a cover and is designated hereinafter as cover D. The cover D is located on a console (not shown) such as, for example, a centre console in the interior of a motor vehicle. With the cover opening mechanism  1  according to the invention, the cover D can be opened as desired on two opposite sides, and swiveled on the respective side, and specifically on a first side Y 1  or a second side Y 2 . The coordinate system is defined such that the X axis runs in the longitudinal direction of the cover opening mechanism from a front side A to a rear side B of the cover D between which run the cover longitudinal sides or cover opening sides  11 ,  12  of the cover D. The direction is obtained from the respective embodiment and the Z axis to be defined therein, as will be described hereinafter. The XY plane is hereinafter designated as the actuating plane. 
     Hereinafter the upper side or “above” is understood to be that side of the cover D or the cover opening mechanism in which the respective opening edge of the cover D is moved in order to open a compartment located approximately under said cover. In the arrangement of the cover opening mechanism according to the invention on a storage box of a centre console in a motor vehicle, the X axis preferably runs towards the assumed direction of travel of the vehicle. For this case, for example, Y 1  can designate the driver side and Y 2  the passenger side. 
     In the embodiment shown, the cover D preferably has a covering (not shown) which is placed on the cover base member G. The embodiment of the opening mechanism shown in  FIGS. 1 to 10  is inserted in a cover base member G. However, it is alternatively also possible to insert the opening mechanism according to the invention in a covering of the cover base member G. It is also possible to insert parts of the opening mechanism in the cover base member G and parts of the opening mechanism in the covering of the cover base member G. 
     The opening of the cover element D by means of the opening mechanism  1  on the first side Y 1  is effected by turning the cover D about a second cover rotation pin (axis)  22  running on a second cover longitudinal side or cover opening side  12  located opposite to this side Y 1 . Similarly, the opening of the cover D on the second side Y 2  located opposite to the first side Y 1  ( FIG. 1 ) is effected by turning the cover about a first cover rotation pin (axis)  21  located opposite to the second cover longitudinal side or cover opening side  12 . 
     The first swivel pin  21  and the second swivel pin  22  are each formed by a front  21   a  or  22   a  and a rear  21   b  or  22   b  swivel pin element or swivel pin part pieces which, when viewed in their longitudinal direction, are arranged substantially axially one behind the other and can be moved relative to one another by means of an actuating device B. For this purpose, a front and a rear pin element  23   a  or  23   b  is arranged on the front and rear swivel pin element  21   a  or  21   b  of the first swivel pin  21 . These are mounted so that they can be moved to and fro by means of the actuating device B preferably in corresponding guide devices  25   a  or  25   b , wherein all or individual guide devices can be arranged on the cover base member, on the cover covering or also on the console. Similarly, a front and a rear pin element  25   a  or  25   b  are arranged on the front and rear swivel pin element  22   a  or  22   b  of the second swivel pin  22 , which pin elements are mounted so that they can be moved to and fro by means of the actuating device B preferably in the corresponding guide devices  26   a  or  26   b.    
     The cover actuating device B of the cover opening mechanism comprises a first actuating device B 1  with a first actuating element  110  and a second actuating device B 2  with a second actuating element  120 . In this case, in a preferred embodiment and in that shown, the first actuating device B 1  and the first actuating element  110  connected mechanically or generally functionally thereto are located on the first swivel pin  21  as well as on the first side Y 1  in order to be able to open or close the cover element D on this side Y 1 . Similarly, the second actuating device B 2  and the mechanically or generally functionally connected second actuating element  120  are located on the second swivel pin  22  as well as on the second side Y 2 . 
     The positions of the actuating elements  110 ,  120  are dependent on the respective application and can be made in particular from ergonomic aspects. For example, the actuating elements  110 ,  120  can be arranged centrally on the upper side of a covering of the cover D. 
     In a base position or starting position, i.e. when the first or second actuating device B 1  or B 2  are not actuated, the respectively associated first and second swivel pin element  21   a ,  21   b  or  22   a ,  22   b  are located in a deployed position, i.e., in a position in which the pin elements  23   a ,  23   b  or  24   a ,  24   b  guided in the guide devices  25   a ,  25   b  or  26   a ,  26   b  are inserted in corresponding guide devices (not shown) connected to the console and are thus mounted therein so that the cover element D locks the longitudinal sides  11  or  12  on the console and thereby prevents opening of the cover  1  on one of the sides Y 1  or Y 2 . 
     The first actuating device B 1  is mechanically coupled to the front  21   a  and the rear  21   b  swivel pin element of the first swivel pin  21  in such a manner that by actuating the first actuating device B 1 , the front  21   a  and the rear  21   b  swivel pin element are driven together towards one another into an open position, i.e. from a closed into an open position and their pin elements  23   a  or  23   b  guided in their guide devices  25   a  or  25   b  are driven out from corresponding guide devices (not shown) connected to the console so that the cover element D on its first longitudinal side  11  is released with respect to the console and the second swivel pin  22  can act as a swivel pin for opening the cover  1  on the oppositely located first side Y 1 . Similarly, the second actuating device B 2  is mechanically coupled to the front  22   a  and the rear  22   b  swivel pin element of the second swivel pin  22  in such a manner that by actuating the second actuating device B 2 , the front  22   a  and the rear  22   b  swivel pin element are driven together from a closed into an open position and are optionally driven out from corresponding guide devices (not shown) connected to the storage box so that the cover element D on its second longitudinal side  12  is released with respect to the console and the first swivel pin  21  can act as a swivel pin for opening the cover  1  on the oppositely located second side Y 2 . 
     The cover actuating device B acts with a false actuation and blocking device M comprising a locking slider  200  having the function of blocking and switching operating states of the actuating device. The locking slider  200  preferably has the form of a tongue running in the axis of symmetry S of the cover opening device. The false actuation and blocking device M is provided for the event that if one of the actuating elements  110  or  120  is actuated for activating the first or second swivel pin  21  or  22 , the respectively other non-actuated element  120  or  110  or actuating device B 1  or B 2  is blocked so that after opening the cover B on one side Y 1  or Y 2 , opening of the cover D on the opposite side Y 2  or Y 1  at the same time can be prevented. For this purpose the actuating devices B 1 , B 2  are mechanically connected to the first and second actuating device B 1 , B 2 . In a further development of the invention it is possible to actuate both actuating devices simultaneously in order to be able to remove the cover D simply from the console. 
     Each actuating device B 1 , B 2  has a transmitting element  51  or  52  which is connected to the associated actuating element  110  or  120  in such a manner that when an actuating element  110 ,  120  is actuated, the associated transmitting element  51  or  52  is moved from a closed position into an open position. The actuating elements  110  or  120  can be positively connected to the respectively associated transmitting element  51  or  52  and, for example, placed on the latter or clipped thereon. Alternatively, the actuating elements  110  or  120  can also be connected seamlessly to the respectively associated transmitting element  51  or  52 . 
     The first and the second transmitting element  51 ,  52  of the false actuation and blocking device M is connected to a first displacing member  71  of a first displacing device V 1  or a second displacing member  72  of a second displacing device V 2  which generally belong to a displacing mechanism V. The displacing members  71 ,  72  of the displacing mechanism V are moved by the transmitting elements  51 ,  52 . In addition, the displacing elements  71 ,  72  act on the first or second swivel pin element of the associated displacing mechanism V 1  or V 2 . An embodiment according to the invention is described hereinafter in which the displacing members  71 ,  72  act on the second (rear) swivel pin element  21   b  or  22   b  of the associated displacing mechanism V 1  or V 2 . 
     The displacing members  71 ,  72  can be embodied differently. In one embodiment these can be configured as cable or Bowden cables which transmit the movement of the transmitting elements  51 ,  52  to the respective swivel pin. Depending on the application and depending on the positioning of the guide rollers or bearing points, a spring pre-tensioning can be provided in order to achieve a return of a deflected state into the initial state or the closed position. 
     In an alternative embodiment of the displacing mechanism V which is shown the displacing members  71 ,  72  are configured as elements having an annular bearing structure for mounting the displacing members on a preferably common mounting device  80  so that the displacing devices  71 ,  72  can be moved to and fro between a first or closed and a second or open position. Each displacing member  71 ,  72  is connected to the associated first,  21   a  or  22   a , and also to the second swivel pin element  21   b  or  22   b  in such a manner that in a first or closed position of the displacing devices V 1 , V 2 , these are located in a closed position and in an open position of the displacing devices V 1 , V 2 , these are located in an open position. Each displacing device V 1 , V 2  is pre-stressed in the closed position by means of a pre-stressing device  400 . 
     Each displacing member  71 ,  72  has a transmitting portion  73  or  74  which cooperates mechanically with a transmitting portion  51   a  or  52   a  of the associated transmitting element  71  or  72  in such a manner that when an actuating element  110 ,  120  is actuated, the transmitting portion  51   a  or  52   a  associated therewith and therefore also via the displacing members  71  or  72 , the displacing device V 1  or V 2  is moved into the open position in order to move the swivel pin elements  21   a ,  21   b  into an open position. 
     At the same time, the first displacing member  73  of the first displacing device  71  and the first transmitting element  51  of the false actuation and blocking device M has a transmitting section  73  or  51 . Likewise, the second displacing member  74  of the second displacing device  72  and the second transmitting element  52  of the false actuation and blocking device M has a transmitting section  74  or  54 . The transmitting sections  73  and  51   a  or  74  and  52   a  each form a mechanism of action for transmitting the movement of the transmitting elements  51  or  52  to the displacing members  73  or  74 . This mechanism of action can be executed in various ways. In a preferred embodiment of the invention, the mechanism of action is provided with a configuration of the transmitting sections in which these intermesh positively. In this case, the transmitting portions  73 ,  51   a  or  74 ,  52   a  can in particular be configured as toothed segments. Alternatively, in this embodiment one of the cooperating transmitting sections can be configured as a groove or recess and the other one of the cooperating transmitting sections can be configured as a driver. 
     In a preferred embodiment shown in the figures, the mounting device  80  is a rotary mounting on which the displacing members  71 ,  72  are mounted rotatably and one above the other. Furthermore, the transmitting elements  51 ,  52  are guided longitudinally displaceably in a direction transverse to the direction of movement of the swivel pin elements by a corresponding guide device on the cover D (not shown). 
     The locking slider  200  is mounted displaceably on the base member G or displaceably on the cover covering between an open or actuating position and a blocking position and is pre-stressed in the actuating position by means of a spring device in which the actuating elements  51 ,  52  can be moved by means of the actuating elements  110  or  120  from a closed position into a locking position. The blocking position of the locking slider  200  is achieved by the cooperation of an active element arranged on the locking slider  200  such as, for example, a ramp or a lug, with a corresponding counter-bearing such as, for example, a lug or a ramp (not shown) on the console. When closing the cover, the active elements of the locking slider  200  and the console come to abut against one another shortly before the cover D rests on the console. During further closure of the cover D as far as its end position, the locking slider  200  is pressed into its actuating position. In the embodiment shown, this is a position driven towards the back or towards the displacing device  70 . The locking slider  200  has a locking element  210  which, in the blocking position of the locking slider  200 , is inserted into corresponding catch recesses on the transmitting elements in order to block the actuation of said elements (e.g.  FIG. 1 ). 
       FIGS. 1 and 2  show a blocking position of the locking slider  200  in which a locking element engages simultaneously in corresponding openings of both actuating elements  51 ,  52  to block a movement or actuation of said elements. This is the case when the cover is opened since in the open state the locking slider does not cooperate with the console and is thus situated in the blocking position. 
     Each transmitting element  51 ,  52  has at least two catch recesses (engagement recesses) located adjacently to one another in the actuating direction of said elements, in particular in the form of catch grooves or openings (engagement grooves or openings)  55 ,  57  or  56 ,  58  (in  FIG. 7  three catch openings  53 ,  55 ,  57  are shown on the transmitting element  51  and in  FIG. 8  three catch openings  54 ,  56 ,  58  are shown on the transmitting element  52 ), into which the blocking element  210  can be inserted. The openings have substantially the same opening shape and size. In addition, the openings  55 ,  57  of the first transmitting element  51  are arranged at the same distance from one another as the openings  56 ,  58  of the second transmitting element  52 . The respective first opening  55 ,  56  is provided for the closed position and the respective second opening  57 ,  58  for the open position. That is, the openings are arranged in particular on the transmitting elements in such a manner that 
     the first transmitting element  51  is located in the closed position and the second transmitting element  52  is located in the open position when a first opening of a plurality of openings of the first transmitting element  51  and a first opening of a plurality of openings of the second transmitting element  52  lie one above the other so that the blocking element  210  can be inserted simultaneously into these openings as a result of the spring pre-tensioning; 
     the second transmitting element  52  is located in the closed position and the first transmitting element  51  is located in the open position when the second opening of the second transmitting element  52  and the first opening of the first transmitting element  51  lie one above the other so that the blocking element  210  can be inserted simultaneously into these openings as a result of the spring pre-tensioning. 
     According to one embodiment, therefore the first and the second transmitting elements  51 ,  52  of the actuating device can be moved relative to one another and each of the transmitting elements has at least two catch recesses  53 ,  55 ,  57  or  54 ,  56 ,  58  located one behind the other, wherein the transmitting elements  51 ,  52  can be locked in a closed position and an open position of each transmitting element by means of a blocking or locking element  210 , whereby the blocking element can be inserted into respectively one catch recess of the first and the second transmitting element. 
     The pre-tensioning of the locking slider  200  effected by the spring device can be produced in various ways: in the embodiment shown, the spring device is implemented by two spring elements  201 ,  202  or elastic struts which on the one hand are connected to the locking slider  200  and on the other hand are connected to the transmitting elements  51  or  52 . Alternatively, the spring elements can also be coupled on the cover D. The advantage of this embodiment is that the transmitting elements  51 ,  52  of the actuating device, the locking slider  200  with the blocking element and the spring elements  210 ,  202  can be manufactured in one piece and in particular can be fabricated as one piece such as, for example, a plastic component. In particular, these parts can be produced as a single plastic component by injection moulding. 
     The cooperation of the longitudinally displaceable blocking slider  200  and the openings is as follows: 
     When the cover D is closed, the blocking slider  200  is located in a position moved back against the pre-tension of the spring elements  201 ,  202 , or unlocking position (not shown). In this unlocking position of the locking slider  200 , the second locking element V 2  is driven out from the openings and both the first and the second transmitting element can be displaced transversely to the second locking element V 2  by means of the respectively assigned actuating element  110  or  120 , in particular to move one of the transmitting elements  51 ,  52  into an open position. A stop element (not shown) can be located on the first and on the second transmitting element in order to restrict the freedom of movement of the transmitting elements relative to one another in the direction of actuation. 
     When a transmitting element is moved into an open position by means of an actuating element and the cover D has been opened, the locking slider  200  is moved into its blocking position, and in the embodiment shown towards the front, and therefore the blocking element  210  is moved into the openings of the transmitting elements. This is possible since the second opening of the actuated transmitting element has come into a position with the first opening of the non-actuated transmitting element in the direction of movement of the transmitting element where these are one above the other. As a result of the spring pre-tensioning in this position of the transmitting element, the second locking element is driven into the superposed openings and thus the first and the second transmitting element are mutually locked. 
     When using two openings on each of the transmitting elements, it is merely possible for both transmitting elements to be locked in their deployed position in which both swivel pin elements are in the locked position or one transmitting element is locked in the deployed position and another transmitting element is locked in the retracted position. Three openings can also be arranged on the transmitting elements. In this case, both transmitting elements can be additionally locked simultaneously in their retracted position or open position so that both swivel pin elements are located in an unlocking position. 
     The displacing mechanism V is described hereinafter according to the embodiment shown in the figures: 
     Each of the displacing members  71 ,  72  has a rotating ring for mounting the displacing devices on the mounting device  300  and respectively one transmitting section  73  or  74  so that the movement of the transmitting elements  51  or  52  of the actuating device B 1  or B 2  is converted into a rotary movement. An arm  75  or  76  is arranged rigidly on each transmitting element  73 ,  74 , said arm being connected to the respective swivel pin element  21   b  or  22   b  via a joint  77  or  78 . 
     A coupling lever  83  or  84  is coupled to the second swivel pin element  21   b ,  22   b  via a joint  81 ,  82 , said coupling lever being located on the first arm or first articulation point thereof. The coupling lever  83 ,  84  is pivotally mounted at a bearing point  85 ,  86  on mounting devices d 1  or d 2  arranged on the cover D so that the coupling lever  83  or  84  can be rotated about the mounting devices d 1  or d 2  in the plane of actuation. At its second end located opposite the first end or its second bearing point, the coupling lever  83 ,  84  is connected to the first swivel pin element  21   a  or  22   a  via a second joint  87  or  88 . The first swivel pin element  21   a  or  22   a  is formed suitably curved in the plane of actuation in order to connect the second joint on the coupling lever and the pin element  23   a ,  24   a  of the first swivel pin element  21   a  or  22   a.    
     The mounting devices d 1 , d 2  of the coupling lever can also be arranged on the cover covering. 
     Instead of a coupling lever, it is also possible to use a wheel or a functionally equivalent part which is mounted rotatably on the mounting devices d 1 , d 2  and has friction faces which cooperate with corresponding friction faces on the first and second swivel pin elements in order to actuate these. In this embodiment the joints  81 ,  87  or  82 ,  88  can be omitted. 
     The coupling lever  83 ,  84  mounted on the associated mounting device  85 ,  86  effects a coupling of the swivel pin elements  21   a  and  21   b  or  22   a  and  22   b  of the displacing element  71  or  72  in such a manner that the movement of the swivel pin elements  21   a  and  21   b  or  22   a  and  22   b  runs in opposite directions. That is, during the rotation of a displacing member, only the two swivel pin elements belonging together  21   a  and  21   b  or  22   a  and  22   b  move relative to one another from an open position into a closed position or can execute the opposite movement thereto. The actuation of the swivel pin elements  21   a  and  21   b  or  22   a  and  22   b  is effected on the basis of the movement of the transmitting element of the actuating device B 1 , B 2  which is converted into a rotary movement of the displacing member by means of the respective transmitting part and is transmitted to the swivel pin elements  21   a  and  21   b  or  22   a  and  22   b  via the coupling lever. 
     In general, individual one or all the joints  81 ,  87 ,  77  or  82 ,  88 ,  78  can be embodied as flush, frictional or positive. In a flush embodiment these joints are preferably embodied as film hinges (see  FIGS. 1 to 9 ). In an embodiment as frictional joints, a friction wheel is used in each case instead of the levers  83 ,  84 . In the positive embodiment of the joints, a toothed wheel is used in each case instead of the levers  83 ,  84 . Instead of a film hinge, it is also possible to use a positive hinge joint. In this case, in particular, the hinge joint can be embodied as an in-mould assembly. 
     With these joint embodiments as a film hinge or as an in-mould assembly it is possible to produce the displacing devices as one piece, i.e. composed of parts which cannot be detached non-destructively. 
     The displacing members  71 ,  72  of the displacing device  70  are pre-tensioned by means of pre-tensioning device  400  in a closed position in which the position of the displacing arms  75  or  76  connected thereto effects a closed position of the associated swivel pin elements  21   a ,  21   b  or  22   a ,  22   b . During an actuation of the actuating elements  110 ,  120  and the transmitting elements  51  or  52  connected to said elements, a rotation of the associated displacing members  71 ,  72  accordingly takes place against the spring force of the pre-tensioning device  400 . This restores the displacing members  71 ,  72  back into their initial or closed position after releasing the actuating elements  110 ,  120 . 
     In the embodiment of the invention shown, the pre-tensioning device can be implemented as a bending element  401 ,  402  which for its part is affixed on the one hand to the respective displacing device  71 ,  72  and on the other hand, is mounted at a distance therefrom by means of the mounting device  403  or  404  towards the direction of movement of the respective displacing members  71  or  72 . 
     Alternatively, the pre-tensioning device  400  can also be implemented with a correspondingly shaped spring (not shown) which is located on the two displacing members  71 ,  72  and mutually pre-tensions the two displacing members  71 ,  72  in their closed position. 
     In a preferred embodiment of the invention, the first swivel pin element  21   a ,  22   a  is curved towards the interior or towards the axis of symmetry S of the displacing device  70 . Since the end of the first swivel pin elements  21   a ,  22   a  connected to the second end of the coupling lever is likewise directed towards the axis of symmetry S and the second swivel pin element  21   b  or  22   b  is located outside the same, the profiles of the displacing arm  75  or  76  and of the first swivel pin elements  21   a ,  22   a  intersect. At this point bearing surfaces can be provided on the first swivel pin element  21   a ,  22   a  for the relative movement of the displacing arm  75  or  76  in order to restrict the movement of the swivel pin elements  21   a  and  21   b  or  22   a  and  22   b  relative to one another both at the maximum distance and at the minimum distance. 
     In the preferred embodiment of the invention shown, the displacing elements  71 ,  72  of the associated devices B 1  or B 2  are arranged one above the other when viewed in the Z direction or transversely to the plane of actuation. 
     As a result, the displacing elements can be manufactured as identical components. 
     The components of the displacing elements are preferably made of plastic and in particular manufactured by injection moulding. When the displacing members are manufactured as identical components, this has the advantage that only one mould is required to produce both displacing members which significantly reduces the manufacturing costs compared with the prior art. 
     The transmitting elements  51 ,  52  can be pre-tensioned in the opening position. 
     The embodiment of the displacing mechanism V shown with the displacing members  71 ,  72  mounted on the mounting devices  400  can also be arranged and cooperate with different types of false actuation and blocking devices. The displacing members  71 ,  72  generally require a longitudinal movement of transmitting sections which act on the transmitting sections of the displacing elements.