Abstract:
A device for further processing a fluid material, particularly a care device for medical or dental tool holders, the material being stored in a tank under pressure, the device having a coupling fixture having an adapter forming a screw connection to the tank under pressure, the adapter of the coupling fixture being pivotally supported.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a device according to the preamble of claim  1  intended for further processing a fluid agent, wherein the agent is stored in a pressurized container. In particular, the present invention relates to a device for maintaining medical or dental handpieces. 
     2. Related Technology 
     A maintenance device such as this is known, for example, from DE 199 13 945 A1, which belongs to the applicant. It is used, in particular, to clean and to maintain the drive channels, and also the drive elements rotatably mounted therein, of dental handpieces. Here the handpieces are coupled to corresponding connections, via which cleaning and care agents are fed through the various channels of the tubular handpieces. In particular, the care agent supplied last in this case is used to protect the individual components against excessive wear during use. 
     The manufacturer generally provides the care agent used for maintaining such medical or dental handpieces in the form of spray cans. These cans contain the care agent in pressurized form and make it available when required, wherein the device provides a corresponding coupling apparatus with an adapter for connection to the spray can or generally the pressurized storage container. 
     The care agents used for carrying out such maintenance measures are usually highly flammable. Since the containers are also pressurized, care must be taken to ensure that there is a reliable connection between the storage container for the care agent and the maintenance device. Despite various types of solutions, the optimum connection to date has still proved to be a screw connection. However, this has the associated disadvantage that the removal and reinsertion of a storage container is complicated, or at least means that it is necessary to make it easier to access the coupling apparatus, for example by making the housing larger. 
     SUMMARY OF THE INVENTION 
     The invention makes it possible to produce a reliable coupling between a storage container for a care agent and a corresponding device, while at the same time making handling easier as compared with solutions known to date. 
     Accordingly, the invention provides a device for further processing a fluid agent, in particular a maintenance device for medical or dental handpieces, which agent is stored in a pressurized container, wherein the device has a coupling apparatus with an adapter for forming a screw connection to the pressurized container, wherein the adapter of the coupling apparatus is pivotably mounted. 
     The solution according to the invention is, in turn, initially based on the concept of designing the coupling apparatus in such a way that it is possible to form a screw connection to the pressurized container via a corresponding adapter. According to the invention, however, the coupling apparatus is designed in such a way that the adapter is pivotably mounted. 
     Accordingly, the invention proposes a device for further processing a fluid agent, in particular a maintenance device for medical or dental handpieces, wherein the agent is stored in a pressurized container, the device has a coupling apparatus with an adapter for forming a screw connection to the pressurized container and wherein, according to the invention, the adapter of the coupling apparatus is pivotably mounted. 
     The pivotable mounting of the adapter for forming the screw connection to the pressurized container makes it easier to change a storage container for a corresponding care agent since, for the screwing-in and unscrewing operations, the adapter and therefore the container to be fastened to it can be positioned in such a way that it is easier to access the container. In particular, it may be provided that the adapter of the coupling apparatus is pivotable between an operating position, in which the container is arranged completely inside a housing of the device, and a maintenance position, wherein at least part of the storage container protrudes out of the device housing in the maintenance position. In this case, it may be provided, in particular, that the coupling apparatus is provided with latching means which firstly define the operating position and secondly define the maintenance position. 
     The solution according to the invention is therefore distinguished in that firstly it is possible to produce an extremely reliable connection between the storage container and the device, and secondly it is easier to insert and remove the storage container. Overall, this improves the handling of the device. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention will be explained in more detail below with reference to the appended drawings, in which: 
         FIG. 1  shows a perspective view of a device according to the invention for maintaining medical or dental handpieces; 
         FIG. 2  shows a side view of the device shown in  FIG. 1 ; 
         FIGS. 3 to 6  show different views of the coupling apparatus with the pivotably mounted adapter; 
         FIG. 7  shows the adapter pivoted into the maintenance position; and 
         FIGS. 8 and 9  show arrangements of a care agent can, connected to the adapter, in the two different pivoted positions. 
     
    
    
     DETAILED DESCRIPTION 
       FIG. 1  shows a maintenance device which is designated generally by the reference symbol  1 , the individual parts and assemblies of which are integrated in a housing  2 . This housing has a substantially cuboidal form, the front side being provided with a first swing door  3  via which access can be gained to a maintenance space  4 .  FIG. 1  shows the maintenance device  1  with the door  3  open. 
     The maintenance space  4  is used to accommodate medical or dental handpieces which are to be cleaned and maintained, this being done by forming a plurality of insert connection parts  5  within the maintenance space  4 , it being possible to attach the handpieces onto these connection parts. The insert connection parts  5  are formed with corresponding supply lines via which cleaning and/or care agents can be introduced into the handpieces in order to maintain them. With respect to the special procedure for cleaning and maintaining the handpieces, reference is made to DE 199 13 945 A1, which has already been mentioned above. The device  1  is operated using a control panel  6  formed on the upper side of the housing  2 . 
     The care agent fed through the handpieces in order to complete the cleaning and maintenance process, in particular, is provided by an exchangeable storage container in the form of a pressurized can  50 . As shown in the illustration in  FIG. 1 , a further accommodating space  7 , which is accessible via a further door  8  on the side, is formed in the housing  2  in order to accommodate the can  50 . A special coupling apparatus, which is explained in more detail below, is used to connect the can  50  to the device  1 , so that the care agent can be removed during operation of the device  1 . 
     The care agent normally used for cleaning and maintaining medical or dental handpieces is flammable, and therefore a reliable connection should be produced when coupling the pressurized can  50  to the device  1 . The coupling apparatus provided for this purpose, which is shown, for example, in the side view in  FIG. 2  and is designated by the reference symbol  10 , accordingly has an adapter  11  which is designed to form a screw connection to the pressurized can  50 . The problem arises here that the can  50  must be fitted to the adapter  11  in a suitable manner; in the case of embodiments known to date, this has led to relatively complicated handling. In particular, in the position shown in  FIG. 1 , it is only possible with difficulty to grip the can  50  and screw it in and unscrew it, since the space in the accommodating space  7  is very restricted. In order accordingly to make handling easier, the coupling apparatus  10  has a special design, which is explained below. 
     The special feature of the coupling apparatus  10  shown in more detail in  FIGS. 3 to 7  is that it has a pivotably mounted adapter  11 . In accordance with the illustrations, the underside of the adapter  11  is provided with an insertion opening  12  for the valve connection of the pressurized can  50 , this opening being provided with an internal thread  13  in order to form a screw connection to the can  50 . An O-ring  14 , which provides an additional seal, is arranged on the bottom of the insertion opening  12  in order ultimately to reliably produce a pressure-tight connection to the can  50 . A passage line or bore  15  extends through the adapter  11  and, at its upper end, ends at a connection piece  16  for a media line via which the corresponding care agent can then ultimately be supplied to the maintenance device  1 . This passage line  15  may optionally be opened or closed via a shut-off valve  17  which can be activated using a stop-cock or lever  18  formed on the front side of the adapter  11 ; this further increases the operational reliability. 
     In accordance with the sectional illustration in  FIG. 4 , the adapter  11  is mounted on a clasp-shaped holder  20 , two lateral pins  21   a  engaging in corresponding openings or recesses  21   b  in the adapter  11 . These pins  21   a , which are fastened to lateral arms  22  of the holder  20 , define a pivot axis which makes it possible to pivot the adapter  11  between two different positions. Latching devices which define two different pivoted positions of the adapter  11  are formed by grooves  19  formed on the outside of the adapter  11  and by pins  23  which interact with these grooves  19  and are fastened to the undersides of the clasp-like holding element  20 . In a first position, the adapter  11  is oriented vertically. This position corresponds to an operating position in which the spray can  50  is arranged completely inside the accommodating space  7 , as shown in  FIG. 1 . By contrast, the maintenance position shown in  FIG. 7  is distinguished by the fact that the adapter  11  is pivoted by an angle of about 30° to 45° with respect to the holding element  20 . In this case, a guide  25 , which protrudes from the adapter toward the underside, is pivoted out of the housing. 
     In accordance with the illustrations in  FIGS. 8 and 9 , where  FIG. 8  shows the maintenance position and  FIG. 9  shows the operating position, at least the lower end of the can  50  is also guided out of the housing  2  of the maintenance device  1  in the maintenance position. The can  50  may therefore be placed obliquely from the underside on the adapter  11  latched in the maintenance position and be screwed thereto. It is easy to carry out this process since it is easy to grip the can  50  when the adapter  11  is pivoted laterally and therefore the can protrudes. Once the screw connection has been produced between the can  50  and the adapter  11 , the latter is pivoted into the operating position and the can is therefore inserted completely into the accommodating space  7 , in accordance with the illustration in  FIG. 1 . 
     The advantage of this special refinement is that it is very simple to exchange the can while simultaneously being able to produce a reliable and, in particular, pressure-tight connection between the adapter and the can by way of a screw connection. As a result, the device is easy to handle and operation is highly reliable.