The invention relates to a switch for an electrical device, in particular for an electrical tool, comprising a slide control for setting a rotational speed of the electrical device, a switch housing, and at least one circuit board arranged in the switch housing for holding electrical components of the slide control. According to the invention, a movably supported operating element of the slide control is inserted into a contact chamber of the switch housing in a sealed manner through a first feed-through and is led out of the contact chamber in a sealed manner through a second feed-through in all adjustment positions of the operating element. Thus, a switch that ensures reliable function even under ambient conditions of high contamination is provided.

The invention relates to a switch for an electrical device, in particular for an electrical tool, comprising a slide control for setting a rotational speed of the electrical device, a switch housing, and at least one circuit board arranged in the switch housing for holding electrical components of the slide control. According to the invention, a movably supported operating element of the slide control is inserted into a contact chamber of the switch housing in a sealed manner through a first feed-through and is led out of the contact chamber in a sealed manner through a second feed-through in all adjustment positions of the operating element. Thus, a switch that ensures reliable function even under ambient conditions of high contamination is provided.

A drip-proof structure of an electronic component includes a rotary body that includes a main body as an operating portion, a first case rotatably supporting the rotary body, a second case that supports the other side surface of the main body of the rotary body and houses, together with the first case, the rotary body, a sliding piece that changes its position to follow rotation of the rotary body, a circuit board that outputs an output signal corresponding to the rotational position of the rotary body, a cover that covers the first and second cases and the circuit board, and first and second drip-proof members arranged between the first case and the cover and between the second case and the cover, respectively.

A drip-proof structure of an electronic component includes a rotary body that includes a main body as an operating portion, a first case rotatably supporting the rotary body, a second case that supports the other side surface of the main body of the rotary body and houses, together with the first case, the rotary body, a sliding piece that changes its position to follow rotation of the rotary body, a circuit board that outputs an output signal corresponding to the rotational position of the rotary body, a cover that covers the first and second cases and the circuit board, and first and second drip-proof members arranged between the first case and the cover and between the second case and the cover, respectively.

The household appliance of the present invention relates to a control panel by which the user can control the functions of the household appliance; at least one opening disposed on the control panel; a shaft that is disposed behind the control panel so as to extend towards the opening and that enables the related function to be realized; a knob that is disposed on the shaft and that enables the user to move the shaft; a sealing element that is disposed on the opening so as to almost completely surround the shaft.

A waterproof switch device includes: a switch member including a body portion and a movable portion; an operated portion that is a shaft member having a distal end exposed from an opening provided in an exterior member of an electronic apparatus and a proximal end connected to the movable portion, the operated portion including a flange portion extending in a radial direction; a waterproof cover made of elastomer material; and a retaining member including an opening portion through which a part of the operated portion closer to the distal end than the flange portion can pass but the flange portion cannot pass, the retaining member being disposed farther inward from the exterior member than the waterproof cover.

A waterproof switch device includes: a switch member including a body portion and a movable portion; an operated portion that is a shaft member having a distal end exposed from an opening provided in an exterior member of an electronic apparatus and a proximal end connected to the movable portion, the operated portion including a flange portion extending in a radial direction; a waterproof cover made of elastomer material; and a retaining member including an opening portion through which a part of the operated portion closer to the distal end than the flange portion can pass but the flange portion cannot pass, the retaining member being disposed farther inward from the exterior member than the waterproof cover.

A rotary switch fitted with signalling means to provide a visual indication of the operating condition of an actuator device, comprising a switch body made of metal or coated externally in metal and a cover is provided. The cover may be joined to close the switch body by means of a plurality of attachment screws in metal or externally coated in metal, each housed in seats arranged in the cover and in the switch body. In particular, inside the seat of the switch body there may be an insert made of a material suitable to prevent the circulation of galvanic currents between the seat of the switch body and the attachment screw.

A rotary switch fitted with signalling means to provide a visual indication of the operating condition of an actuator device, comprising a switch body made of metal or coated externally in metal and a cover is provided. The cover may be joined to close the switch body by means of a plurality of attachment screws in metal or externally coated in metal, each housed in seats arranged in the cover and in the switch body. In particular, inside the seat of the switch body there may be an insert made of a material suitable to prevent the circulation of galvanic currents between the seat of the switch body and the attachment screw.

A switching unit (200) including a membrane (202), a housing (210), at least one rotary switch (204), at least one knob (216), and a sealing member (214). The membrane (202) defines a first opening (230) adapted to receive a portion of at least one rotary switch (204). The housing (210) defines a second opening adapted to be aligned with the first opening (230) to receive the portion of the at least one rotary switch (204). The at least one rotary switch (204) is disposed in the housing (210). The at least one knob (216) mounted on the at least one rotary switch (204). The sealing member (214) is positioned on the housing (210) in the second opening (231), around the at least one rotary switch (204), between the at least one knob (216) and the housing (210).