Abstract:
A device ( 10 ) for the dosed discharge of a powder-form medium, in particular ceramic powder for dental purposes, including a storage container ( 12 ) with a first outlet ( 40 ), as well as a slider ( 20 ) with a receptacle ( 18 ) for a quantity of medium to be dosed, which can be selectively aligned with a first outlet or a second outlet ( 50 ), through which the medium can be discharged. In order to achieve reproducible discharge of a defined quantity of free-flowing medium in an uncomplicated design, and since there is no requirement for re-usability after emptying the storage container, the invention proposes that the slider ( 20 ) be connected to at least one spring element ( 26, 28 ), which admits a force upon the slider to align the receptacle ( 80 ) with the first receptacle ( 40 ), and that the receptacle can be secured by a lock element ( 34 ) in a position aligned with the second outlet ( 50 ).

Description:
BACKGROUND OF THE INVENTION 
       [0001]    The invention relates to a device for dosed discharge of a powder-form medium, in particular ceramic powder for dental purposes, comprising a housing—providing a storage container—with a first outlet, a cover—extending from or connected to the housing—with a second outlet for delivering the medium, as well as a slider, which can be shifted within the cover to selectively align with either the first or the second outlet, with a receptacle for a quantity of medium to be dosed, whereby the slider interacts with at least one spring element, via which a continuous force is applied to the slider to align the receptacle with the first outlet. 
         [0002]    Dosing devices of a corresponding type are employed in various branches of industry to deliver a predetermined quantity of a medium, e.g. to a subsequent manufacturing process. 
         [0003]    DE-C-33 36 274 describes a container lid that can be screwed onto a glass vessel or tin can to be able to discharge in a dosed manner consumable goods such as coffee or tee. The lid comprises a slider that features a receptacle for the dosed discharge of the consumable goods. Via arms issuing from the slider, the slider is hinged to pins issuing from the lid. The arms, which exhibit the effect of spring elements, cause the slider to be positioned selectively in a first or a second position, as long as no external forces are applied. 
         [0004]    A dosing apparatus for e.g. sugar is described in DE-A-34 22 486. A dosed quantity can be accommodated by a receptacle of a slider, which is acted upon by a force of a spring in such a manner that the receptacle is aligned with a discharge opening, which opens into the dosing device&#39;s reservoir holding the sugar. 
         [0005]    In a device for portioned discharge of for example coffee or tea, a cover comprises a slider, which by means of integrally moulded spring leafs—together with a dosing chamber receiving the medium to be dosed—is always aligned with an opening that is connected to the reservoir for the medium (DE-A-100 23 971). 
         [0006]    A box for powder-form goods such as snuff tobacco is described in DE-U-79 02 889. In this, snuff tobacco is retrieved from a reservoir by means of a slider comprising a dosing chamber. In this, the slider can interact with a spring, so that a force acts upon the dosing chamber in the direction towards the opening of the box. 
         [0007]    Subject matter of DE-C-137 635 is a container for automatic discharge of a powder-form or granular medium. For this, a slider is connected to a spring for the purpose of moving the slider together with a dosing chamber towards an opening of a reservoir, from which the medium is to be charged. 
         [0008]    EP-A-0 079 239 relates to a dosing apparatus, onto which a container can be screwed. The dosing device comprises a slider that by means of spring elements is held in a position, in which a dosing chamber of the slider is aligned with an opening leading to the container. 
         [0009]    Described in DE-A-40 38 274 is a mechanized or automated dosing device, which according to one embodiment comprises a funnel as reservoir with an outlet that is connected to a cylinder, in which a piston that borders an annular space is movable by means of a toothed rack. In this, the space bordered by the piston can be connected either to the outlet extending from the funnel or to a further outlet, to be able to discharge the quantity charged into the space. 
         [0010]    In a dosing device according to DE-B-22 28 548, a reservoir is associated with a metering shaft, which comprises a dosing chamber that can selectively be aligned with the reservoir or—after turning the metering shaft—with a delivery opening. 
         [0011]    Another option of discharging a dosed quantity of a powder-form material is offered by DE-A-197 27 340. In this, the material is pressed in a cartridge, so that when the cartridge is rotated material can be taken off by means of a stationary knife. 
       SUMMARY OF THE INVENTION 
       [0012]    The present invention is based on the objective to further develop a device of the type mentioned above so that with a simple design a defined quantity of the free-flowing medium can be discharged in a reproducible manner. In this it must be ensured that material can not accumulate and consequently adhere in the receptacle forming a dosing chamber, to rule out the possibility that the quantity to be discharged is inadvertently reduced after several uses. Also, the formation of bridges of material in the housing itself should be prevented. Further, it should be possible to completely empty the housing. At the same time, the device should be cheap to produce, so that re-usability after emptying of the reservoir is not absolutely necessary. 
         [0013]    As a solution to this objective, the invention firstly intends that essentially the slider be securable by means of a lock element in a position aligned with the second outlet. 
         [0014]    In accordance with the invention, when the device is not being used, the slider will be locked in a position in which the interconnection to the interior of the reservoir is blocked, so that consequently no residuals of the powder-form material to be dosed can accumulate and possibly adhere during further use, which would inadvertently reduce the quantity to be discharged. 
         [0015]    To discharge the medium, the lock element is removed and the device is turned by hand to fill the receptacle, i.e. the dosing chamber present in the slider, to feed the powder-form material into the receptacle. Subsequently the slider is moved to the second outlet, which on the one hand interrupts the interconnection to the reservoir, and on the other allows discharge of the quantity of powder-form medium present in the receptacle. 
         [0016]    In a solution with its own inventive merit it is intended that the housing contain or be connected to an oscillating device, which can be activated in dependence on the orientation of the housing. The oscillating device can in particular be an unbalanced motor, which ensures that the required amount of medium to be discharged is charged to the receptacle via the first outlet, i.e. in particular when the device is turned in such a manner that its cover is positioned below. The oscillating device is activated only in this position. For this it is particularly intended that an electric circuit containing the oscillating device is closed when the device has been turned for discharging the medium, whereby a switch, e.g. in form of a reed contact that can be actuated via a magnet, is provided to close the electric circuit. The magnet can be supported moveable along the longitudinal direction of the housing and approaches the reed contact to switch the latter, i.e. to close the circuit, when the housing is turned into the discharge position. 
         [0017]    In particular, a preferably cylindrical magnet can be arranged moveable in a hollow cylindrical receptacle extending along the longitudinal direction of the housing, whereby the length of the receptacle is greater than the extent of the magnet along the longitudinal direction of the housing. Relative to the switch such as reed contact, the magnet is arranged in such a manner that when the device is not in use, i.e. has been put down, the magnet will be positioned below the switch and in this position will be at a greater distance from the switch than when the housing has been turned by 180° into the position, in which the powder-form or free-flowing medium is being discharged. 
         [0018]    In order to secure the magnet e.g. during transport in a position that precludes actuating the reed contact and thus closing the electric circuit, a further development of the invention intends that the receptacle accommodating the magnet, which can also be referred to as a pipe, extends from the bottom wall of the housing component that accepts the reed contact, the unbalanced motor, and the electrical circuitry including battery. In the bottom wall—in extension of the receptacle—is located a position lock such as a cavity, into which a metal part such as a small steel plate, e.g. in form of a plain washer, can be placed, which will keep the magnet in a position along the bottom wall. As a result of this, the distance between the reed contact and the magnet will be too great for the reed contact to be actuated and the electric circuit for the unbalanced motor to be closed. These measures in a simple way provide a shipping brace. Using the dosing device only requires removing the metal part, so that the magnet becomes moveable by gravity to the desired degree within the receptacle, i.e. in particular within the plastic pipe, with the result being that when the top component of the housing, i.e. the second outlet, points downward, the magnet slides in the direction towards the reed contact, actuates the latter, and the unbalanced motor will be activated as a result. 
         [0019]    In particular, the device features a cylindrical housing as storage container, which can be closed by a cap-like cover such as a hood, in which the slider is movably supported under the effect of a spring force. Along the circumferential wall side, the cover should at least in some sections be flush aligned with the outer surface of the housing. The cover features an opening as first opening, into which the slider is moveable into the cover against a force generated by the spring element to shift alignment from the first outlet to the second outlet. Further, the cover should be flat-topped on the top side and should feature a surface, which extends perpendicular to the longitudinal axis of the housing and through which passes the second outlet, which preferably is encompassed by a hollow cylindrical projecting part projecting from the surface. Inserted into the hollow cylindrical projecting part can be a cylindrical body forming the lock element, which secures the slider when the receptacle is aligned with the second outlet. In this position the slider blocks the first outlet. 
         [0020]    To ensure a controlled adjustment of the slider, the slider is accommodated in a guide way extending in the cover perpendicular to the longitudinal axis of the housing. 
         [0021]    The housing itself, which is closed by the cover, should on the cover side feature a cap-like, e.g. cone- or truncated-cone-shaped, extension that borders the first outlet, whereby the guide way for the slider extends from this extension itself. In this, the guide way can consist of a plate-shaped base element with a flat geometry on the slider side and, extending from this base element, a curved element with an inside geometry that is matched to the outside geometry of the slider. 
         [0022]    The base element features an opening as second opening, which connects to the first outlet, whereby along the longitudinal direction of the base element, offset relative to the second opening, the curved element is intersected by an opening as third opening, which connects to the second outlet. 
         [0023]    The slider is moveable within the guide way and is acted upon by means of a spring element in such a way that the receptacle has the tendency to be aligned with the first outlet. For the purpose of fixing the spring element with simple means and to let the required force become effective, it is intended that from a first end region of the guide way, in particular from the curved element, which features the cross section of a segment of a circle such as semi-circle, extend a first mounting element, which in particular is formed by pin-shaped projections projecting from the respective longitudinal edge region of the guide way. As opposite mounting element for the spring element, a pin-shaped element should issue from the slider, extend on both sides of the guide way, and pass through corresponding longitudinal slits in the guide way. This creates the possibility of positioning a spring element such as a tension spring on each longitudinal edge of the guide way, to exert a force upon the slider. 
         [0024]    Along its circumferential side, the slider should exhibit a semi-cylindrical geometry, the flat side of which, forming the bottom wall, rests upon the base element and is movable along the latter. 
         [0025]    Extending from the bottom wall of the slider are preferably ridge-shaped walls, which extend perpendicular to the longitudinal axis of the slider and border the receptacle, i.e. the dosing chamber. Correspondingly, the bottom wall features an opening as fourth opening, which can be aligned with the first outlet. On the circumferential side, the border walls are matched to the interior circumferential geometry of the curved element, forming a receptacle closed along the circumferential side into which the quantity to be dosed can be fed in the form of a powder-form medium. Relative to the fourth opening, the receptacle is not covered by the slider and, in dependence on the position of the slider, the receptacle will be blocked by the guide way or will be connected via the third opening to the second outlet. 
         [0026]    To facilitate its operation, the slider exhibits in its region facing the first opening a preferably textured boundary wall to be used as handle. When the slider is not engaged to the lock element, the boundary wall for shifting the slider extends outside the cover. 
         [0027]    Further, the slider can comprise several stiffening ribs, which extend from the bottom wall and on the circumferential side are in at least sections matched to the inner circumference geometry of the curved element of the guide way. 
         [0028]    As mentioned above, the lock element should have a cylindrical shape, whereby a stepped geometry is preferred that matches the inner geometry of the regions of the cover or guide way, into which the lock element engages. Independent thereof, the lock element should feature on its end a cover element that is embodied flange-like and along its circumference side is aligned flush with the circumferential surface of the hollow cylindrical projection of the cover or possible protrudes laterally, when the lock element has been engaged, to facilitate an easy hand-hold for removal from the hollow cylindrical projecting part. 
         [0029]    The cover can be material-bonded to the housing in particular by ultrasonic welding. The bottom wall of the housing as well should be welded by ultrasound to the circumferential wall. Other material-bonding processes such as gluing are also feasible. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0030]    Further details, advantages and features of the invention are not only found in the claims, the characteristic features described therein—on their own and/or in combination—but also in the following description of a preferred embodiment example illustrated in the drawings. 
           [0031]      FIG. 1  shows a perspective view of a dosing device. 
           [0032]      FIG. 2  shows a front view of the dosing device of  FIG. 1 . 
           [0033]      FIG. 3  shows a section along the line A-A in  FIG. 2 . 
           [0034]      FIG. 4  shows a section along the line B-B. 
           [0035]      FIG. 5  shows a perspective view of a hood covering the device of  FIG. 1 . 
           [0036]      FIG. 6  shows a magnified top view of the hood of  FIG. 5 . 
           [0037]      FIG. 7  shows a front view of the hood of  FIG. 5 . 
           [0038]      FIG. 8  shows a section along the line A-A in  FIG. 7 . 
           [0039]      FIG. 9  illustrates the housing of the device of  FIG. 1 . 
           [0040]      FIG. 10  shows a sectional view of the housing of  FIG. 9 . 
           [0041]      FIG. 11  shows a section along the line A-A in  FIG. 10 . 
           [0042]      FIG. 12  shows a view along the direction B of  FIG. 10 . 
           [0043]      FIG. 13  shows a perspective view of a slider of the device of  FIG. 1 . 
           [0044]      FIG. 14  shows a top view of the slider of  FIG. 13 . 
           [0045]      FIG. 15  shows a section along the line A-A in  FIG. 14 , 
           [0046]      FIG. 16  shows a section along the line B-B in  FIG. 14 , 
           [0047]      FIG. 17  shows a rear view of the slider of  FIG. 13 . 
           [0048]      FIG. 18  shows an exploded view of a further embodiment of a dosing device. 
           [0049]      FIG. 19  shows a first perspective view of a part connectable to the device of  FIG. 18 . 
           [0050]      FIG. 20  shows a different perspective view of the part of  FIG. 19 . 
       
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0051]      FIGS. 1 to 17  illustrate elements and details of a dosing device  10 , which can be used to discharge a defined quantity of free-flowing media, in particular powder-form material such as ceramic powder for the dental field. However, the cases of application given as examples in this regard should not be understood as limiting the scope of protection, even though they are preferred. 
         [0052]    The device  10  comprises a housing  12 , which is closed on its topside by a cover that will be referred to as hood  14  hereinafter. The hood  14  can be material-bonded to the housing  12  by means of ultrasonic welding. The housing  12  comprises a cylindrical-shape main body  16 , which is closed on the bottom by a bottom wall  18 , which also can be material-bonded to the housing body  16  by means of ultrasonic welding. The free-flowing medium to be discharged in a dosed manner is charged into the housing  12  with its bottom wall  18  removed. Subsequently, the housing  12  is closed by the bottom wall  18 . Thus the housing  12  constitutes a storage container. 
         [0053]    To be able to reproducibly discharge a dosed quantity of the medium, a dosing device in form of a slider  20  is provided, which will be explained in more detail on the basis of  FIGS. 13 to 17  in connection with  FIGS. 9 to 12 . The slider  20  is movable in the hood  14  perpendicularly to the longitudinal axis of the housing  12 . For this purpose, the hood  14  features a cut-out as an opening  22 , which can engage a front wall  24  of the slider  20 , to be pushed into the hood  14  against the force of tension springs  26 ,  28 . 
         [0054]    On its top, the hood  14  features a flattened region  30 , from which protrudes a projecting part  32  with a hollow cylinder geometry, into which a cylindrical-shape lock element  34  can be inserted, to position the slider  20  in the position illustrated in  FIGS. 1 and 3 . The lock element  34  can feature a lid element  35  of a flange-like embodiment to facilitate problem-free handling. 
         [0055]    The hood  14  has a cylindrical geometry with two opposite outside surfaces  36 ,  37  extending at an angle. The surfaces  36 ,  37  extend alongside the slider  24 . In the remaining surfaces, the circumferential surface of the hood  30  approximates sections of a cylinder circumferential wall surface. Furthermore, the outer side of the hood  14  continues with a flush alignment into the outer surface of the main or base body  16  of the housing  12 . 
         [0056]    The housing  12 , i.e. the cylinder-shaped base body  16 , at its upper side changes into a head section  38  or extension, which has a truncated-cone geometry and features a funnel shape on the inside. The head section  38  surrounds a first outlet  40 . The head section  38  can be a component manufactured separately by e.g. injection moulding and can be material-bonded to the base body  16 , e.g. using ultrasonic welding. From the head section  38  extends a guide way  42  for the slider  20 . The guide way  42  comprises a plate-shaped base section  44 , —also referred to as base element—, which is covered by a pipe-section-shaped element  46  with an arc-shaped cross-section and an inside geometry that matches the effective circumferential geometry of the slider  20 . This provides an accurate guide way for the slider  20 . The guide way  42  extends perpendicular to the longitudinal axis of the housing  12 . 
         [0057]    The base section  44  features a cutout, which is to be referred to as second opening and which opens into the first outlet  40 . 
         [0058]    The curved element  46  features an opening  48  as third opening, which extends flush with the hollow-cylinder-shaped projecting part  32  that surrounds a second outlet  50 . A pin element, which can be referred to as axle  56  and which is fixed in the region at the rear side of the slider  20  and extends at a right angle to the latter&#39;s two longitudinal sides, passes through longitudinal slits  52 ,  54 , which extend along the base element  44  in the region of the third opening  48 . 
         [0059]    Pin-shaped projections  58 ,  60  protrude from the forward region of the curved element  46 , in particular in a direction that corresponds to that of the axle  56 . The tension springs  26 ,  28  are mounted in between the laterally protruding sections of the axle  56  and the projections  58 ,  60 , as a result of which the slider  20  is acted upon by a force in the direction toward the front end of the guide way  42  and thus the opening  22  in the hood  14 . 
         [0060]    The slider  20  has a base body  62 , which comprises a base plate  64  and—extending from the latter—ridge-shaped longitudinal-side-wall sections  66 ,  68 . In between the latter extend boundary walls  70 ,  72 ,  74 . The front boundary walls  72 ,  74  represent rib-like reinforcements. In contrast, a rear partition wall  70  together with a rear boundary wall  76  of the slider surround a receptacle  80 , into which can flow the medium to be transferred from the housing  12 . The receptacle  80  is open at its lower side, and consequently has an opening (fourth opening)  82 . This opening  82  can be aligned with the second opening (not illustrated) of the plate-shaped base section  44  of the guide way  42 , which in turn connects to the first outlet  40 . The receptacle  80  and thus its opening  82  is aligned with the first outlet  40  when the slider  20  is exclusively acted upon by the forces exerted by the tension springs  26 ,  28 . In this case, the forward textured front or boundary wall  24  of the slider  20  is located outside the hood  14 . In this position, the receptacle  80  is accessible via the opening  82 , whereas the remaining region is covered by the guide way  42 , i.e. the curved element  46 . For filling the receptacle  80  in this position of the slider  20 , the dosing device  10  must be rotated by approximately 180°. Subsequently the slider  20  is pushed into the hood  14  against the force of the springs  26 ,  28 . This closes the opening  82  of the receptacle  80 . When the slider  20  has been pushed into the hood  14 —this movement is restricted by the interaction between the axle  56  and the limits of the slits  52 ,  54 —the receptacle  80  with its upper opening  84  located opposite its bottom wall opening reaches true alignment with the third opening  48  and thus the second outlet  50 , so that the medium contained in the receptacle  80  can be discharged. 
         [0061]    Subsequently, the lock element  34  can be inserted via the second opening  50  so that it penetrates all the way to the slider  20 , i.e. the receptacle  80 , in order to arrest the slider  20 . In this position the front wall  24  of the slider  20  is approximately aligned with the exterior surface of the hood  14 , as is shown schematically in the illustrations of  FIGS. 1 to 4 . 
         [0062]    The invention provides with uncomplicated mechanical measures a dosing device for the dosed discharge of a free-flowing medium, in particular ceramic powder, which can be used as a single-use dosing device. Of course the design is also suitable for repeated use. In this case, the bottom wall  18  would have to close the base body  20  in a detachable manner. 
         [0063]    The individual component parts of the device  10  consist of plastic and can be injection-moulded parts. The guide way  42  can as a separate part be joined by ultrasonic welding to the cap-shaped head section  38  of the housing  12 . Other fastening methods are also feasible. 
         [0064]      FIGS. 18 to 20  illustrate a further embodiment of the invention&#39;s dosing device  100 , which in regard to the arrangement of the slider, the housing containing the fluid medium to be discharged, and the cover corresponds to the device of  FIGS. 1 to 17 , so that identical reference symbols can be used for equivalent elements. In this respect we also refer to the explanations in connection with  FIGS. 1 to 17 . 
         [0065]    Divergent from the embodiment example explained above and supplementary to it, the device  100  comprises an oscillating device  102 , which preferably is embodied as an unbalanced motor. The oscillating device  102 , which in the following will be referred to as unbalanced motor for simplicity, is activated when medium is to be discharged. In this, the unbalanced motor serves to ensure that the required amount of free-flowing material can flow via the first outlet  40  into the receptacle  80 , i.e. the dosing chamber in the slider  20 , so that it can be discharged after aligning the receptacle  20  with the second outlet. Thus the unbalanced motor  102  ensures the consistent discharge of medium from the housing  12 . At the same time it is ensured that no material or powder residue remains in the housing  12 , which allows optimal utilization. 
         [0066]    In accordance with the embodiment example of  FIGS. 19 to 20 , the unbalanced motor  102  is located in a housing section  104 , which preferably can be screw-mounted to the housing  12  and which together with the bottom  18  of the housing  12  forms a quasi double bottom. The housing section  104  houses a circuit board  108  for the electrical wiring of the unbalanced motor  112 . The drawing illustrates a battery such as a button cell  106 , which is connected to the unbalanced motor  102 , in particular via the circuit board  108 . For opening and closing the electric circuit, a reed contact  110  is provided, which is actuated via a magnet  112 , which is arranged moveable along the longitudinal direction of the housing  12  in a receptacle  114 . 
         [0067]    The receptacle  114  extends from the bottom wall  116  of the housing section  104 , so that when the device  100  has been put down or is held in a position in which the cover  14  is facing upward, the magnet  112  will be sufficiently distant from the reed contact  110  for the latter not to close, with the result that the electric circuit for the unbalanced motor  102  is interrupted. When the device  110  is rotated, i.e. to discharge free-flowing medium, the magnet  112  moves in the receptacle  114  forming a guide way in the direction towards the reed contact  110 , so that the latter is closed and the unbalanced motor  102  is activated. The vibration generated by the unbalanced motor  102  causes the free-flowing or powder-form material present in the housing  12  to be conveyed in the direction towards the first outlet  40 , to reproducibly fill the receptacle  80  in the slider  20 . 
         [0068]    In its boundary wall  118  that is located opposite its bottom wall  116 , the housing section  104  features a metal insert part  120 , which has a screw thread and can be screwed into a threaded bush  123 , which extends from or passes through the bottom wall  18  of the housing  12 . 
         [0069]      FIG. 18  further illustrates that the base element  44  of the guide way  42  for the slider  20  can be covered by foil  122 , which is to be removed prior to the first use of the device  10 / 100 . This ensures that the interior of the housing  12 , i.e. the storage reservoir, is sealed airtight during transport and storage, providing protection against ingress of humidity. 
         [0070]    As illustrated in  FIG. 20 , the receptacle  114 —which consists of plastic—has the shape of a pipe that extends from the interior side of the bottom wall  116  of the second housing  104 . On the outside and in extension of the receptacle  114 , the bottom wall  116  features a receiver such as a cavity  124 , into which a metal part such as a small steel plate or plain washer  126  can be inserted and wedged, which holds the magnet  112  in a position in the region of the bottom wall  116 , i.e. in the part of the pipe or receptacle  114  that extends from the interior side of the bottom wall  116 . As a result, the magnet  112  will be at a sufficiently large distance from the reed contact  110 , so that the latter will not be actuated, and the circuit that includes the unbalanced motor  112  will not be closed. This provides a simple shipping brace. When the dosing device  10  is to be operated it is only necessary to remove the metal part  126  from the receiver  124  located in the bottom wall  116 , so that the magnet  112  can be moved by gravity within the receptacle  114 . Consequently, the reed contact  110  is actuated and thus the circuit that contains the unbalanced motor  102  is closed, if the dosing device  10  is rotated in such a manner that its head, i.e. the second outlet  50 , points downward. Consequently, activation of the unbalanced motor  102  causes the powder-form medium present in the housing  12  to vibrate, giving rise to flowability, so that the required volume of powder material can flow into the receptacle  80  of the slider  20  that constitutes a dosing chamber. 
       REFERENCE LIST 
       [0000]    
       
           10  Dosing device 
           12  Housing 
           14  Cover/Hood 
           16  Main body 
           18  Bottom wall 
           20  Slider 
           22  First opening 
           24  Front wall 
           26  Tension springs 
           28  Tension springs 
           30  Flattened region 
           32  Projecting part 
           34  Lock element 
           35  Cover element 
           36  Side surface 
           37  Side surface 
           38  Head section 
           40  First outlet 
           42  Guide way 
           44  Base section 
           46  Element 
           48  Third outlet 
           50  Second outlet 
           52  Longitudinal slit 
           54  Longitudinal slit 
           56  Axle 
           58  Projecting part 
           60  Projecting part 
           62  Base body 
           64  Base plate 
           66  Longitudinal side wall section 
           68  Longitudinal side wall section 
           70  Boundary wall 
           72  Boundary wall 
           74  Boundary wall 
           76  Boundary wall 
           80  Receptacle 
           82  Opening 
           84  Opening 
           100  Device 
           102  Oscillating device 
           104  Housing section 
           106  Button cell 
           108  Circuit board 
           110  Reed contact 
           112  Magnet 
           114  Receptacle 
           116  Bottom wall 
           118  Boundary wall 
           120  Metal insert 
           122  Foil 
           123  Bush 
           124  Receiver 
           126  Small metal plate