Pump unit with electrical connection plug

Patent metadata

Field	Value
Publication number	US-9337556-B2
Application number	US-201314372134-A
Country	US
Kind code	B2
Filing date	Jan 11, 2013
Priority date	Feb 8, 2012
Publication date	May 10, 2016
Grant date	May 10, 2016

Abstract

A pump assembly is provided with an associated electrical connection plug, which is releasably connectable to an electrical plug coupling ( 10 ) of the pump assembly and includes a plug body ( 12 ) in which at least one electrical contact element ( 20 ), including a connection terminal ( 28 ) for receiving a connection wire ( 36 ), is arranged. The plug body ( 12 ) includes a receiver ( 40 ) for an opening element ( 42 ). The opening element ( 42 ) is insertable into the receiver in a removable manner, and the receiver ( 40 ) is arranged relative to the connection terminal ( 28 ) in a manner such that when the opening element ( 42 ) is inserted into the receiver ( 42 ), the opening element ( 42 ) acts on the connection terminal ( 28 ) and keeps this in an opened condition.

First claim

The invention claimed is:

1. A pump assembly and an associated electrical connection plug comprising:
an electrical plug coupling of the pump assembly, the electrical connection plug being releasably connectable to electrical plug coupling;
a plug body of the electrical connection plug;
at least one electrical contact element, of the electrical connection plug, arranged in the plug body, the at least one electrical contact element comprising a connection terminal for receiving a connection wire, wherein:
the plug body comprises a receiver for an opening element;
the opening element is held in the receiver with one or more of a non-positive fit and a positive fit;
the opening element is insertable into the receiver in a removable manner; and
the receiver is arranged relative to the connection terminal in a manner such that when the opening element is inserted into the receiver, the opening element acts on the connection terminal and keeps the connection terminal in an opened condition.

2. A pump assembly and connection plug according to claim 1 , wherein several electrical contact elements are arranged in the plug body and in each case comprise a connection terminal for a connection wire, and the opening element and the receiver are designed and arranged such that when the opening element is inserted into the receiver, the opening element acts simultaneously on the connection terminals of several contact elements and keeps the contact elements, in each case, in an opened condition.

3. A pump assembly according to claim 2 , wherein:
the opening element comprises several actuation sections which are arranged such that they act in each case on a connection terminal; and
the actuation sections comprise a predetermined breakage location at a connection to remaining parts of the opening element.

4. A pump assembly and connection plug according to claim 1 , wherein:
at least one said connection terminal comprises spring terminals which, by way of a spring bias, are held in a closed condition, in which a received connection wire is held in a clamping manner; and
the opening element, inserted into the receiver, holds the at least one said connection terminal in the opened condition against the spring bias.

5. A pump assembly and a connection plug according to claim 4 , wherein the at least one said connection comprises a spring clip which in the closed condition projects into the region of the receiver in the plug body.

6. A pump assembly and connection pug according to claim 5 , wherein the opening element comprises at least one wedge-like press-surface which on insertion of the opening element into the receiver presses the spring clip out of the region of the receiver.

7. A pump assembly and connection plug according to claim 1 , wherein the plug body, at a first axial end, forms a coupling section which is designed in a manner corresponding to the plug coupling of the pump assembly.

8. A pump assembly and connection plug according to claim 7 , wherein at least one said connection terminal and the receiver, for the opening element, are open to a second axial end of the plug body which is away from the first axial end.

9. A pump assembly according to claim 8 , wherein the insertion direction of the connection wire into the connection terminal is directed parallel to the insertion and removal direction for the opening element out of the receiver.

10. A pump assembly and connection plug according to claim 8 , wherein the connection plug comprises a cover cap which can be applied onto the second axial end of the plug body and thereby covers the openings of the connection terminals and of the receiver.

11. A pump assembly and connection plug according to claim 10 , wherein the cover cap and the plug body are provided with locking elements which correspond to one another and by way of which the cover cap and the plug body can come into engagement with one another in a locking manner.

12. A pump assembly and connection plug according to claim 10 , wherein the cover cap comprises a cable feed-through which is provided with a strain relief.

13. A pump assembly and connection plug according to claim 10 , wherein the opening element and the cover cap are designed in a manner such that an engagement of the cover cap and the plug body is prevented when the opening element is located in the receiver in the plug body.

14. A pump assembly and connection plug according to claim 1 , wherein the opening element comprises at least one actuation element which can be applied into the receiver, as well as a grip section which projects outwards out of the receiver.

15. A pump assembly and connection plug according to claim 14 , wherein the grip section is provided with a labelling for the connection terminals.

16. A pump assembly according to claim 1 , wherein the opening element is arranged on a cover cap of the connection plug or on a housing part of the pump assembly or is part of a packaging of the connection plug or of the pump assembly and is preferably connected to the remaining parts of the packaging via a predetermined breakage location.

17. A connection plug for a pump assembly, the connection plug comprising:
a plug body;
at least one electrical contact element arranged in the plug body, said contact element comprising a connection terminal for receiving a connection wire, wherein the plug body comprises a receiver for an opening element, wherein the opening element is insertable into the receiver in a removable manner and the receiver is arranged relative to the contact element in a manner such that when the opening element is inserted into the receiver, the opening element acts on the connection terminal and holds the connection terminal in an opened condition, wherein at least a portion of said opening element is arranged in an interior space of said receiver when the opening element is inserted into the receiver, said at least said portion of said opening element and said receiver being connected via one or more of a positive connection and a non-positive connection when the opening element is inserted into the receiver.

18. A connection plug according to claim 17 , wherein several electrical contact elements are arranged in the plug body and in each case comprise a connection terminal for a connection wire, and the opening element and the receiver are designed and arranged such that when the opening element is inserted into the receiver, the opening element acts simultaneously on the connection terminals of several contact elements and keeps the contact elements, in each case, in an opened condition.

19. A connection plug according to claim 18 , wherein:
the opening element comprises several actuation sections which are arranged such that they act in each case on at least one said connection terminal, wherein; and
the actuation sections comprise a predetermined breakage location at a connection to remaining parts of the opening element.

20. A connection plug according and connection plug according to claim 17 , wherein:
at least one said connection comprises spring terminals which, by way of a spring bias, are held in a closed condition, in which a received connection wire is held in a clamping manner; and
the opening element, inserted into the receiver, holds the connection terminals in the opened condition against the spring bias.

Assignees

• Grundfos Holding As

Inventors

• Rask Torben

Classifications

• F04D13/06 Primary

  the pump being electrically driven · CPC title

• F04D13/0686

  Mechanical details of the pump control unit (pump control F04D15/00) · CPC title

• H01R4/4845

  Electricity · mapped topic

• H01R4/4827 Primary

  Electricity · mapped topic

• H01R4/4833

  Sliding arrangements, e.g. sliding button · CPC title