Manual metering device
For simplified dismantling of manual metering devices ( 1 ), the manual metering device ( 1 ) proposed is one which comprises the component carrier ( 5 ). This component carrier ( 5 ) can be pushed into its use position in the housing ( 4 ) through the insertion opening ( 10 ) present in the housing ( 4 ). The releasable connection ( 11 ), which can be released in particular from the outside, is provided for the releasable fastening of the component carrier ( 5 ) in its use position within the housing ( 4 ).
1. A manual metering device ( 1 ), comprising: a main body ( 3 ), which has a housing ( 4 ) configured to contain components of one or more of a pipetting mechanism ( 6 ), of an ejecting mechanism ( 7 ) and of a volume-adjustment mechanism ( 8 ), of the manual metering device ( 1 ); and a component carrier ( 5 ), which, in its use position is positioned in the housing ( 4 ), the components being arranged on the component carrier ( 5 ), wherein the housing ( 4 ) has an insertion opening ( 10 ), through which the component carrier ( 5 ) is pushed into its use position in the housing ( 4 ), wherein the component carrier ( 5 ) is fastened within the housing ( 4 ) by means of a releasable connection ( 11 ), wherein the manual metering device ( 1 ) has a holder ( 16 ) forming a connecting element of the releasable connection ( 11 ), wherein the holder ( 16 ) secures the component carrier ( 5 ) in its use position, and wherein the housing ( 4 ) has a holder stop ( 18 ), which delimits a depth to which the holder ( 16 ) is inserted into the housing ( 4 ), and a component-carrier stop ( 19 ), which delimits a depth to which the component carrier ( 5 ) is inserted into the housing ( 4 ).
2. The manual metering device ( 1 ) as claimed in claim 1 , wherein the component carrier ( 5 ) has a fastening means ( 35 ) for fastening to a fluid-dispensing unit ( 14 ).
3. The manual metering device ( 1 ) as claimed in claim 1 , wherein the releasable connection ( 11 ) is established by the component carrier ( 5 ) being sufficiently pushed into the housing ( 4 ).
4. The manual metering device ( 1 ) as claimed in claim 1 , wherein the releasable connection ( 11 ) is established in a form-fitting manner.
5. The manual metering device ( 1 ) as claimed in claim 4 , wherein the releasable connection ( 11 ) is a snap-fit connection which is releasable in a non-destructive manner and comprises at least one snap-fit element ( 20 ) and at least one mating snap-fit element ( 22 ).
6. The manual metering device ( 1 ) as claimed in claim 5 , wherein the component carrier ( 5 ) has a component-carrier base ( 28 ), which in the use position of the component carrier ( 5 ), is arranged adjacent to the insertion opening ( 10 ) of the housing ( 4 ) and from which at least one component-carrier arm ( 29 ) extends in the axial direction, wherein one of the at least one snap-fit element ( 20 ) and the at least one mating snap-fit element ( 22 ) is formed on the component-carrier arm ( 29 ).
7. The manual metering device ( 1 ) as claimed in claim 5 , wherein the holder ( 16 ) includes at least one holder arm ( 31 ) which extends in the axial direction, wherein one of the at least one snap-fit element ( 20 ) and the at least one mating snap-fit element ( 22 ) is formed on the holder arm ( 31 ).
8. The manual metering device ( 1 ) as claimed in claim 5 , wherein the at least one snap-fit element is a snap-fit hook ( 21 ) or a latching element.
9. The manual metering device ( 1 ) as claimed in claim 8 , wherein the at least one mating snap-fit element ( 22 ) is a mating snap-fit hook ( 23 ) or a latching hollow.
10. The manual metering device ( 1 ) as claimed in claim 5 , wherein the at least one snap-fit element ( 20 ) is arranged on the component carrier ( 5 ).
11. The manual metering device ( 1 ) as claimed in claim 10 , wherein the at least one mating snap-fit element ( 22 ) is arranged on the housing ( 4 ).
12. The manual metering device ( 1 ) as claimed in claim 5 , wherein the at least one snap-fit mating element ( 22 ) is arranged on the component carrier ( 5 ).
13. The manual metering device ( 1 ) as claimed in claim 12 , wherein the at least one snap-fit element ( 20 ) is arranged on the housing ( 4 ).
14. A manual metering device ( 1 ) comprising: a main body ( 3 ), which has a housing ( 4 ) configured to contain components of one or more of a pipetting mechanism ( 6 ), of an ejecting mechanism ( 7 ) and of a volume-adjustment mechanism ( 8 ), of the manual metering device ( 1 ); and a component carrier ( 5 ), which, in its use position is positioned in the housing ( 4 ), the components being arranged on the component carrier ( 5 ), wherein the housing ( 4 ) has an insertion opening ( 10 ), through which the component carrier ( 5 ) is pushed into its use position in the housing ( 4 ), wherein the component carrier ( 5 ) is fastened within the housing ( 4 ) by means of a releasable connection ( 11 ), and wherein the manual metering device ( 1 ) has a restoring element ( 24 ) generating a restoring force counter to which the component carrier ( 5 ) is pushed into its use position within the housing ( 4 ), thereby prestressing the releasable connection ( 11 ).
15. A manual metering device ( 1 ) comprising: a main body ( 3 ), which has a housing ( 4 ) configured to contain components of one or more of a pipetting mechanism ( 6 ), of an ejecting mechanism ( 7 ) and of a volume-adjustment mechanism ( 8 ), of the manual metering device ( 1 ); and a component carrier ( 5 ), which, in its use position is positioned in the housing ( 4 ), the components being arranged on the component carrier ( 5 ), wherein the housing ( 4 ) has an insertion opening ( 10 ), through which the component carrier ( 5 ) is pushed into its use position in the housing ( 4 ), wherein the component carrier ( 5 ) is fastened within the housing ( 4 ) by means of a releasable connection ( 11 ), and wherein at least one of the housing ( 4 ) and the component carrier ( 5 ) has at least one introduction slot ( 25 ), through which a tool ( 26 ) is introducible into the housing ( 4 ), up to a connecting location ( 27 ), in order to release the releasable connection ( 11 ).
16. A manual metering device ( 1 ) comprising: a main body ( 3 ), which has a housing ( 4 ) configured to contain components of one or more of a pipetting mechanism ( 6 ), of an ejecting mechanism ( 7 ) and of a volume-adjustment mechanism ( 8 ), of the manual metering device ( 1 ); and a component carrier ( 5 ), which, in its use position is positioned in the housing ( 4 ), the components being arranged on the component carrier ( 5 ), wherein the housing ( 4 ) has an insertion opening ( 10 ), through which the component carrier ( 5 ) is pushed into its use position in the housing ( 4 ), wherein the component carrier ( 5 ) is fastened within the housing ( 4 ) by means of a releasable connection ( 11 ), wherein the manual metering device ( 1 ) has a holder ( 16 ) forming a connecting element of the releasable connection ( 11 ), wherein the holder secures the component carrier ( 5 ) in its use position, and wherein the holder ( 16 ) is introduced into the housing ( 4 ) through a head opening ( 17 ), which is formed in the housing ( 4 ) and is located opposite the insertion opening ( 10 ).
17. A manual metering device ( 1 ) comprising: a main body ( 3 ), which has a housing ( 4 ) configured to contain components of one or more of a pipetting mechanism ( 6 ), of an ejecting mechanism ( 7 ) and of a volume-adjustment mechanism ( 8 ), of the manual metering device ( 1 ); and a component carrier ( 5 ), which, in its use position is positioned in the housing ( 4 ), the components being arranged on the component carrier ( 5 ), wherein the housing ( 4 ) has an insertion opening ( 10 ), through which the component carrier ( 5 ) is pushed into its use position in the housing ( 4 ), wherein the component carrier ( 5 ) is fastened within the housing ( 4 ) by means of a releasable connection ( 11 ), wherein the releasable connection ( 11 ) is established in a form-fitting manner, wherein the releasable connection ( 11 ) is a snap-fit connection which is releasable in a non-destructive manner and comprises at least one snap-fit element ( 20 ) and at least one mating snap-fit element ( 22 ), wherein the at least one snap-fit element ( 20 ) is arranged on the component carrier ( 5 ), and wherein the at least one mating snap-fit element ( 22 ) is arranged on a holder ( 16 ) formed to be pushed into the housing ( 4 ).
18. A manual metering device ( 1 ) comprising: a main body ( 3 ), which has a housing ( 4 ) configured to contain components of one or more of a pipetting mechanism ( 6 ), of an ejecting mechanism ( 7 ) and of a volume-adjustment mechanism ( 8 ), of the manual metering device ( 1 ); and a component carrier ( 5 ), which, in its use position is positioned in the housing ( 4 ), the components being arranged on the component carrier ( 5 ), wherein the housing ( 4 ) has an insertion opening ( 10 ), through which the component carrier ( 5 ) is pushed into its use position in the housing ( 4 ), wherein the component carrier ( 5 ) is fastened within the housing ( 4 ) by means of a releasable connection ( 11 ), wherein the releasable connection ( 11 ) is established in a form-fitting manner, wherein the releasable connection ( 11 ) is a snap-fit connection which is releasable in a non-destructive manner and comprises at least one snap-fit element ( 20 ) and at least one mating snap-fit element ( 22 ), wherein the at least one snap-fit mating element ( 22 ) is arranged on the component carrier ( 5 ), and wherein the at least one snap-fit element ( 20 ) is arranged on a holder ( 16 ) formed to be pushed into the housing ( 4 ).