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US 8,188,395 B2Granted
Electric switch
AssigneeMarquardt GmbH
InventorsAlfons Steidle, Klaus Fiederer
Life of this patent
Estimating the term…
Abstract
The invention relates to an electrical switch for an electrical appliance, in particular for an electrical tool, such as a drill, a grinder, a saw, a plane, an angle grinder or the like, and having a housing. The switch has a contact system which is located in the housing, and electrical connections, which lead into the housing and/or are located in the housing, for electrical supply lines to the contact system. Furthermore, the switch may have an operating member for switching action on the contact system, with the contact system being operatively connected to the operating member by means of an elastic element. The electrical connections have seals.
Claims17
An electrical switch for an electrical appliance, the electrical switch comprising:
- a housing;
- a contact system located in the housing and having at least one electrical connection electrically connecting the contact system to an electrical supply line;
- and
- an operating member for switching action on the contact system,
- wherein the at least one electrical connection has a seal surrounding and encapsulating the electrical supply line at the at least one electrical connection,
- wherein the seal rests on the electrical supply line connected to the at least one electrical connection and seals the electrical supply line in the at least one electrical connection,
- wherein the at least one electrical connection is located at least at one of an exterior surface of the housing and leads into the housing and in the housing,
- wherein the seal is in the form of a sleeve with an essentially round cross section and is composed of a flexible elastic material selected from the group consisting of a thermoplastic elastomer and a foam,
- wherein the seal is separate from the electrical supply line, and
- wherein the at least one electrical connection is a push-in connection for insertion of the electrical supply line, and the at least one electrical connection further comprises at least one of a stationary contact spring and a stationary contact web as well as an elastic moving contact spring, such that the electrical supply line is plugged in and held by means of contact pressure between at least one of the stationary contact spring and the moving contact spring and the stationary contact web and the moving contact spring.
7 more elements
An electrical switch for an electrical appliance, the electrical switch comprising:
- a housing;
- a contact system located in the housing and having at least one electrical connection electrically connecting the contact system to an electrical supply line;
- and
- an operating member for switching action on the contact system,
- wherein the housing comprises a separate connecting area for the at least one electrical connection,
- wherein the at least one electrical connection has a seal surrounding and encapsulating the electrical supply line, the seal being separate from the electrical supply line and sealing the electrical supply line in the at least one electrical connection located in the connecting area of the housing,
- wherein the connecting area further comprises a first movable cover that is attached to the housing by at least one of a film hinge, a pivoting hinge, latching hooks, snap-action hooks, locking hooks and latching studs, and the first cover forms a seal by one of a tongue and groove geometry and an elastomer insert, and
- wherein the connecting area is in the form of a chamber, and an interior of the chamber is accessible from outside after the housing is mounted via the first moveable cover.
5 more elements
An electrical switch for an electrical appliance, the electrical switch comprising:
- a housing;
- a contact system located in the housing and having at least one electrical connection electrically connecting the contact system to an electrical supply line;
- and
- an operating member for switching action on the contact system,
- wherein the at least one electrical connection has a seal surrounding and encapsulating the electrical supply line at the at least one electrical connection,
- wherein the seal rests on the electrical supply line connected to the at least one electrical connection and seals the electrical supply line in the at least one electrical connection,
- wherein the at least one electrical connection is located at least at one of an exterior surface of the housing and leads into the housing and in the housing,
- wherein the seal is in the form of a sleeve with an essentially round cross section and is composed of a flexible elastic material selected from the group consisting of a thermoplastic elastomer and a foam,
- wherein the seal is separate from the electrical supply line, and
- wherein the electrical supply line is detachable from at least one electrical connection by means of a control cam;
- the control cam comprising
- a wheel that is positioned on a first cover, and
- an eccentric moving against a spring force of the moving contact spring when the wheel is operated;
- wherein the wheel is accessible on the first cover when the housing has been closed by means of the first cover.
11 more elements
Dependencies are inferred from the claim text.