Temperature-dependent switch
View Patent ↗A temperature-dependent switch, including a switching mechanism unit, and a switching mechanism housing including a first base body composed of electrically conductive material. The temperature-dependent switch further includes a switch housing having a second base body composed of electrically insulating material, in which the switching mechanism housing is arranged, wherein the switch housing includes a stationary contact part. The first base body of the switching mechanism housing surrounds the switching mechanism unit from a first housing side, a second housing side opposite to the first housing side, and a housing circumferential side extending between and transversely to the first and the second housing sides. The first housing side includes an opening through which a movable contact part of the switching mechanism unit interacts with the stationary contact part. The second base body surrounds the first housing side and the circumferential housing side of the switching mechanism housing.
1 . A temperature-dependent switch, comprising:
a temperature-dependent switching mechanism having:
a switching mechanism unit comprising a movable contact part coupled to a bimetallic snap-action disc; and
a switching mechanism housing, in which the switching mechanism unit is arranged and held captively, wherein the switching mechanism housing comprises an electrically conductive first base body;
a switch housing having an electrically insulating second base body, in which the switching mechanism housing is arranged and held captively, wherein the switch housing further comprises a stationary contact part acting as a mating contact to the movable contact part;
a first connection contact part electrically connected to the electrically conductive first base body; and
a second connection contact part electrically connected to the stationary contact part;
wherein the electrically conductive first base body at least partially surrounds the switching mechanism unit from a first housing side, a second housing side opposite to the first housing side, and a housing circumferential side extending between and transversely to the first and the second housing sides,
wherein the electrically conductive first base body comprises, on the first housing side, an opening through which the movable contact part interacts with the stationary contact part,
wherein the electrically insulating second base body surrounds the first housing side and the housing circumferential side of the switching mechanism housing, and
wherein the switch housing, on an inner side facing the switching mechanism housing, comprises:
a first connection contact part receptacle, in which the first connection contact part is arranged; and
a second connection contact part receptacle, in which the second connection contact part is arranged.
2 . The temperature-dependent switch according to claim 1 , wherein a part of the electrically conductive first base body that forms the second housing side of the switching mechanism housing forms a freely accessible outside of the switch.
3 . The temperature-dependent switch according to claim 1 , wherein the first connection contact part is electrically connected in an interior of the switch housing to the electrically conductive first base body and is guided outwards out of the switch housing through the electrically insulating second base body.
4 . The temperature-dependent switch according to claim 1 , wherein the second connection contact part is electrically connected in an interior of the switch housing to the stationary contact part and is guided outwards out of the switch housing through the electrically insulating second base body.
5 . The temperature-dependent switch according to claim 1 , wherein the first connection contact part receptacle comprises a first recess, in which the first connection contact part is embedded, and wherein the second connection contact part receptacle comprises a second recess, in which the second connection contact part is embedded.
6 . The temperature-dependent switch according to claim 5 , wherein the first recess and the second recess lie in a common plane.
7 . The temperature-dependent switch according to claim 1 , wherein the first connection contact part at least partially surrounds the second connection contact part.
8 . The temperature-dependent switch according to claim 1 , wherein an electrically insulating intermediate layer part is arranged between the second connection contact part and the switching mechanism housing.
9 . The temperature-dependent switch according to claim 8 , wherein the switching mechanism housing rests with a first housing portion, which is arranged on the first housing side, on the electrically insulating intermediate layer part and with a second housing portion, which is arranged on the first housing side, on the first connection contact part.
10 . The temperature-dependent switch according to claim 8 , wherein the switching mechanism housing rests with a first housing portion, which is arranged on the first housing side, on the electrically insulating intermediate layer part and with a second housing portion, which is arranged on the first housing side, on an electrically conductive connecting part that is interposed between the second housing portion and the first connection contact part.
11 . The temperature-dependent switch according to claim 10 , wherein the electrically conductive connecting part is L-shaped in cross section and abuts the first housing side and the housing circumferential side of the switching mechanism housing.
12 . The temperature-dependent switch according to claim 10 , wherein the first connection contact part is electrically connected to the electrically conductive first base body via the electrically conductive connecting part.
13 . The temperature-dependent switch according to claim 1 , wherein an outer circumferential surface of the switching mechanism housing that is arranged on the housing circumferential side abuts an inner circumferential surface of the switch housing that is arranged in an interior of the switch housing.
14 . The temperature-dependent switch according to claim 1 , wherein the temperature-dependent switching mechanism is configured so as,
below a response temperature of the bimetallic snap-action disc, to keep the switch in a low-temperature position in which the temperature-dependent switching mechanism establishes via the movable contact part an electrical connection between the first connection contact part and the second connection contact part, and
upon exceeding the response temperature, to move the switch into a high-temperature position in which the temperature-dependent switching mechanism interrupts the electrical connection.
15 . The temperature-dependent switch according to claim 14 , wherein the bimetallic snap-action disc is configured to snap over from a geometrically stable low-temperature configuration into a geometrically stable high-temperature configuration upon exceeding the response temperature, and
wherein the bimetallic snap-action disc is supported in the geometrically stable high-temperature configuration on a supporting surface, which is arranged on the first housing side of the switching mechanism housing and is formed on the electrically conductive first base body, and thereby keeps the movable contact part at a distance from the stationary contact part.
16 . A temperature-dependent switch, comprising:
a temperature-dependent switching mechanism having:
a switching mechanism unit comprising a movable contact part coupled to a bimetallic snap-action disc; and
a switching mechanism housing, in which the switching mechanism unit is arranged and held captively, wherein the switching mechanism housing comprises an electrically conductive first base body;
a switch housing having an electrically insulating second base body, in which the switching mechanism housing is arranged and held captively, wherein the switch housing further comprises a stationary contact part acting as a mating contact to the movable contact part;
a first connection contact part electrically connected to the electrically conductive first base body; and
a second connection contact part electrically connected to the stationary contact part;
wherein the electrically conductive first base body at least partially surrounds the switching mechanism unit from a first housing side, a second housing side opposite to the first housing side, and a housing circumferential side extending between and transversely to the first and the second housing sides,
wherein the electrically conductive first base body comprises, on the first housing side, an opening through which the movable contact part interacts with the stationary contact part,
wherein the electrically insulating second base body surrounds the first housing side and the housing circumferential side of the switching mechanism housing,
wherein an electrically insulating intermediate layer part is arranged between the second connection contact part and the switching mechanism housing,
wherein the switching mechanism housing rests with a first housing portion, which is arranged on the first housing side, on the electrically insulating intermediate layer part and with a second housing portion, which is arranged on the first housing side, on an electrically conductive connecting part that is interposed between the second housing portion and the first connection contact part, and
wherein the electrically conductive connecting part is L-shaped in cross section and abuts the first housing side and the housing circumferential side of the switching mechanism housing.
17 . A temperature-dependent switch, comprising:
a temperature-dependent switching mechanism having:
a switching mechanism unit comprising a movable contact part coupled to a bimetallic snap-action disc; and
a switching mechanism housing, in which the switching mechanism unit is arranged and held captively, wherein the switching mechanism housing comprises an electrically conductive first base body;
a switch housing having an electrically insulating second base body, in which the switching mechanism housing is arranged and held captively, wherein the switch housing further comprises a stationary contact part acting as a mating contact to the movable contact part;
a first connection contact part electrically connected to the electrically conductive first base body; and
a second connection contact part electrically connected to the stationary contact part;
wherein the electrically conductive first base body at least partially surrounds the switching mechanism unit from a first housing side, a second housing side opposite to the first housing side, and a housing circumferential side extending between and transversely to the first and the second housing sides,
wherein the electrically conductive first base body comprises, on the first housing side, an opening through which the movable contact part interacts with the stationary contact part,
wherein the electrically insulating second base body surrounds the first housing side and the housing circumferential side of the switching mechanism housing,
wherein the temperature-dependent switching mechanism is configured so as, below a response temperature of the bimetallic snap-action disc, to keep the switch in a low-temperature position in which the temperature-dependent switching mechanism establishes via the movable contact part an electrical connection between the first connection contact part and the second connection contact part, and, upon exceeding the response temperature, to move the switch into a high-temperature position in which the temperature-dependent switching mechanism interrupts the electrical connection,
wherein the bimetallic snap-action disc is configured to snap over from a low-temperature configuration into a high-temperature configuration upon exceeding the response temperature, and
wherein the bimetallic snap-action disc in its high-temperature configuration contacts a supporting surface and is supported thereon, and keeps the movable contact part at a distance from the stationary contact part, the supporting surface being arranged on the first housing side of the switching mechanism housing and is formed on the electrically conductive first base body.